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Review

Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides

by
Xiaohan Wang
,
Minyi Lin
,
Dan Xu
,
Daowan Lai
and
Ligang Zhou
*
Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China
*
Author to whom correspondence should be addressed.
Molecules 2017, 22(12), 2069; https://doi.org/10.3390/molecules22122069
Submission received: 22 October 2017 / Revised: 20 November 2017 / Accepted: 23 November 2017 / Published: 27 November 2017
(This article belongs to the Section Natural Products Chemistry)
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Abstract

:
Cyclic peptides are cyclic compounds formed mainly by the amide bonds between either proteinogenic or non-proteinogenic amino acids. This review highlights the occurrence, structures and biological activities of fungal cyclic peptides (excluding cyclodipeptides, and peptides containing ester bonds in the core ring) reported until August 2017. About 293 cyclic peptides belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, undeca-, dodeca-, tetradeca-, and octadecapeptides as well as cyclic peptides containing ether bonds in the core ring have been isolated from fungi. They were mainly isolated from the genera Aspergillus, Penicillium, Fusarium, Acremonium and Amanita. Some of them were screened to have antimicrobial, antiviral, cytotoxic, phytotoxic, insecticidal, nematicidal, immunosuppressive and enzyme-inhibitory activities to show their potential applications. Some fungal cyclic peptides such as the echinocandins, pneumocandins and cyclosporin A have been developed as pharmaceuticals.

1. Introduction

Cyclic peptides (also called cyclopeptides) are cyclic compounds formed mainly by proteinogenic or non-proteinogenic amino acids joined together by amide bonds (or peptide bonds). Cyclic peptides have been isolated from plants [1], fungi [2], bacteria (including actinomycetes) [3], sponges [4], algae [5,6], and mammals [7]. Among these organisms, fungi are well-known producers of a diversity of cyclic peptides with interesting structures and biological activities [8]. Here, we focus on the cyclic peptides derived from fungi, including insect pathogenic fungi, plant pathogenic fungi, soil-derived fungi, marine-derived fungi, plant or insect endophytic fungi, and the macroscopic fungi which we usually call mushrooms. Some of the fungal cyclic peptides are mycotoxins which pose a hazard to animals and plants [2]. Interest in cyclic peptides is due to their significant biological activities, such as antimicrobial, insecticidal, cytotoxic, and anticancer activities, in addition to their important physiological and ecological functions. Therefore, they have the potential to be developed as pharmaceuticals and agrochemicals [9].
Fungal cyclic peptides mainly include cyclic di-, tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, and decapeptides. Recent special reviews covering the chemical synthesis [10], biosynthesis [11,12], as well as developments and applications (i.e., echinocandins, pneumocandins and cyclosporin A) [13,14] of fungal cyclic peptides are available. In this review, we describe the occurrence, biological activities, structures, and potential applications of the fungal cyclic peptides and their analogs, with the exception of cyclodipeptides (called 2,5-diketopiperazines), which were previously reviewed [15]. Cyclic depsipeptides from organisms including fungi, which are a big group of cyclic peptides in which one or more amino acid is replaced by a hydroxy acid, resulting in the formation of at least one ester bond in the core ring structure, have also been reviewed [16]. The cyclic peptides containing at least one ether bond in the core ring were considered as a special group and included in this review.

2. Cyclic Tripeptides

Cyclic tripeptides are composed of three amino acid residues in the core ring. They are described in the genera Aspergillus, Penicillium and Xylaria. Cyclic tripeptides exhibit insecticidal [17], cytotoxic [18] and antifungal activities [19]. Their origins, and biological activities are listed in Table 1, and the structures are provided in Figure 1.
Aspochracin (1) was the first cyclic tripeptide isolated from fungi in 1969. It was obtained from the culture broth of Aspergillus ochraceus, a pathogenic fungus causing muscardine on insects. This compound shows contact toxicity on the first instar larvae as well as the eggs of silkworm [17].
Aspochracin (1), JBIR-15 (2) and sclerotiotides A–K (12–22) were obtained from the halotolerant fungus Aspergillus sclerotiorum PT06-1. Only sclerotiotides A (12), B (13), F (17) and I (20), and JBIR-15 (2) show selective antifungal activity against Candida albicans, with minimum inhibitory concentration (MIC) values of 7.5, 3.8, 30, 6.7, and 30 μM, respectively [19].
Psychrophilins A–H (compounds 4–11) were isolated from Aspergillus and Penicillium species [18,20,21,22,23]. Among them, psychrophilin D (7) from Penicillium algidum show cytotoxic activity [18], psychrophilin E (8) from Aspergillus sp. shows antiproliferative activity [22], and psychrophilin G (10) from Aspergillus versicolor ZLN-60 shows lipid-lowering effects [23].

3. Cyclic Tetrapeptides

Cyclic tetrapeptides have been found in many genera such as Acremonium, Alternaria, Cylindrocladium, Fusarium, Helicoma, Penicillium, Peniophora, Phoma, Phomopsis, Pseudoxylaria, Stachylideium, and Verticillium. Their origins and biological activities are listed in Table 2, and the corresponding structures are shown in Figure 2.
Histone deacetylases (HDACs) are important regulators of gene expression and have been implicated as key participants in a variety of diseases. HC-toxins are host-selective toxins and act as inhibitors of HDAC [28]. JM47 (65) from a marine Fusarium species belongs to the HC-toxin family, and contains a 2-amino-8-oxo-9,10-epoxydecanoic acid residue [29]. Other cyclic tetrapeptides such as 1-alaninechlamydocin (24), apicidin (25), chlamydocin (41), FR235222 (60), microsporins A (66) and B (67), and trapoxins A (83) and B (84) also show inhibitory activity on HDAC [30,31]. Apicidin analogs (25–35) from Fusarium species show antiprotozoal activity by inhibiting parasite HDAC [32,33,34,35]. These HDAC inhibitors were considered as the potential therapeutics for spinal muscular atrophy [36].
AS1387392 (36) from Acremonium sp. No. 27082 showed a strong inhibitory effect against mammalian HDAC and T-cell proliferation which suggested its potential as immunosuppressant [37].
Asperterrestide A (38) from the fermentation broth of the marine-derived fungus Aspergillus terreus SCSGAF0162 showed cytotoxicity against U937 and MOLT4 hunman carcinoma cell lines and inhibitory effects on influenza virus strains H1N1 and H3N2 [38].
Chlamydocin (41) was isolated from Diheterospora chlantydosporia [39] and Penicillium sp. BCC18034 [40], respectively. This compound showed antimalarial and cytotoxic activities. Three chlamydocin analogs cyclo[(2S,9R)-9-(acetyloxy)-2-amino-8-oxodecanoyl-2-methylalanyl-l-phenylvalanyl-d-prolyl] (42), cyclo[2-methylalanyl-l-phenylalanyl-d-prolyl-(2S)-2-amino-8-oxo-decanoyl] (43), and cyclo[2-methylalanyl-l-phenylalanyl-d-prolyl-(2S,9R)-2-amino-9-hydroxy-8-oxodecanoyl] (44) were isolated from the culture filtrate of the soil fungus Peniophora sp. They all showed plant growth-retarding activity by reducing the height of rice seedlings without blotch and wilting [41].
Three cyclic tetrapeptides cyclo(Gly-l-Phe-l-Pro-l-Tyr) (45), cyclo(l-Leu-trans-4-hydroxy-l-Pro-l-Leu-trans-4-hydroxy-l-Pro) (46) and cyclo(d-Pro-l-Tyr-l- Pro- l -Tyr) (47) were isolated from the co-culture broth of two mangrove fungi, Phomopsis sp. K38 and Alternaria sp. E33. These compounds all had moderate antifungal activity against Candida albicans, Gaeumannomyces graminis, Rhzioctonia cerealis, Helminthosporium sativum and Fusarium graminearum [42,43].
Three cyclic tetrapeptides cyclo(N-methyl-l-Phe-l-Val-N-methyl-Phe-l-Val) (48), cyclo (N-methyl-l-Phe-l-Val-N-methyl-l-Phe-l-Ile) (49), and cyclo(N-methyl-l-Phe-l-Ile-N-methyl-l-Phe-l-Ile) (50) were isolated from the crude fermentation extract of Onychocola sclerotica. They all display inhibitory activity as cardiac calcium channel blockers on wild-type HEK or C1-6-37-3 cells with IC50 values of 5.0–7.1 μM [44].
Cyl-1 (51) and Cyl-2 (52) from the plant fungal pathogen Cylindrocladium scoparium exhibited marked inhibition on the growth of rice and lettuce seedlings, especially on their root growth, which suggested that they could be used to inhibit plant growth [45,46].
Microsporins A (66) and B (67) from the marine-derived fungus Microsporum cf. gypseum CNL-692 obtained from a sample of the bryozoan Bugula sp. collected in the U.S. Virgin Islands. Both compounds showed inhibitory activity on HDAC and demonstrated cytotoxic activity against human colon adenocarcinoma (HCT-116) cells [47].
Penicopeptide A (69) was isolated from the endophytic fungus Penicillium commune from Vitis vinifera. It exhibited significant inhibitory activity against 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) in vitro and showed strong binding affinity to recombinant human 11β-HSD1 by microscale thermophoresis assay. Moreover, penicopeptide A (69) decreased the lipid droplet accumulation associate with the inhibiton of 11β-HSD1 activity of 3T3-L1 cells in vivo [48].
Pseudoxylallemycins A–F (73–78) were isolated from the termite-associated fungus Pseudoxylaria sp. X802. Pseudoxylallemycins A–D (73–76) showed antibacterial activity against Gram-negative human-pathogenic Pseudomonas aeruginosa and antiproliferative activity against human umbilical vein endothelial cells and K-562 cell lines [49].
Tentoxin (81) and its derivatives dihydrotentoxin (54) and isotentoxin (64) were important mycotoxins from Alternaria spp. [50]. Tentoxin B (82) was isolated from the marine-derived fungus Phoma sp. from the giant jellyfish Nemopilema nomurai. This compound showed weak suppressive effect on the production of nitric oxide in murine macrophage cells [51].
Trapoxins A (83) and B (84) from Helicoma ambiens RF-1023 exhibited detransformation activity against v-sis oncogene-transformed NIH3T3 cells (sis/NIH3T3) [52]. In addition, trapoxin A (83) showed HDAC inhibitory activity [31]. Both compounds displayed their potential as antitumor agents.

4. Cyclic Pentapeptides

Cyclic pentapeptides have been mainly isolated from the genera of Aspergillus, Fusarium, Hamigera, Penicillum, Pseudallescheria and Xylaria. Their distributions in fungi, and biological activities are listed in Table 3, and the structures are provided in Figure 3.
Argadin (86) and argifin (87) produced by Clonostachys sp. FO-7314 and Gliocladium sp. FTD-0668, respectively, were identified in screening as chitinase inhibitors [81,82]. Chitinases play key roles in organisms, ranging from bacteria to humans. There is a need for specific, potent inhibitors to probe the function of these chitinases in different organisms. Such molecules could also provide leads for the development of chemotherapeuticals with fungicidal, insecticidal, or anti-inflammatory potential. Argadin (86) and argifin (87) could be used as the leads for the development of novel chitinase inhibitors [83].
Aspergillipeptide D (88) was isolated from the marine gorgonian-derived fungus Aspergillus sp. SCSIO 41501. It showed evident antiviral activity against herpes simplex virus type 1 (HSV-1) with a median inhibitory concentration (IC50) value of 9.5 μM under their non-cytotoxic concentration against a Vero cell line, and also had antiviral activity against acyclovir-resistant clinical isolates of HSV-1 [84].
Cycloaspeptides A–F (103–108) are anthranilic acid (ABA)-containing cyclic pentapeptides. Among them, cycloaspeptides A–C (103–105) were isolated from Aspergillus sp. NE-45 [85], cycloaspeptide D (106) with antiplasmodial activity from Penicillium algidum [18] and the psychrotolerant fungus Penicillium ribeum [20], cycloaspeptide E (107) with insecticidal activity from several Penicillia species and a Tricothecium strain [86], and cycloaspeptides F (108) and G (109) from Isaria farinosa [87]. The presence of a glucose unit in cycloaspeptide F (108) was very rare in the isolated cyclic peptides.
Seven malformins (114–120) were isolated from a few Aspergillus species [88,89,90,91]. Malformin A1 (114) from Aspergillus niger and Aspergillus tubingensis showed malformation activity in the corn root, and cytotoxic activity, and anti-TMV activity [89,90,92,93]. Malformin C (119) from Aspergillus niger had potent cell growth inhibition activity [94], but its therapeutic index was too low to be an anti-cancer drug [95].
Pseudacyclins A–E (125–129) were isolated from Pseudallescheria boydii which is an emerging fungal pathogen causing fatal infections in both immunocompromised and immunocompetent hosts. Among them, pseudacyclin A (125) exhibited immunosuppressive activity [96].

5. Cyclic Hexapeptides

About 40 cyclic hexapeptides have been isolated from fungi. Their distributions in fungi, and biological activities are shown in Table 4, and the structures are provided in Figure 4.
Aculeacin A (137) was isolated from Aspergillus aculeatus M-4214. This compound showed marked antifungal activity by inhibiting synthesis of β-1,3-glucan [117,118].
The echinocandins have emerged as first-line antifungal agents for many Candida and Aspergillus infections. They have a unique mechanism of action by inhibiting the synthesis of β-1,3-d-glucan, a key component of the fungal cell wall. Caspofungin was the first echinocandin antifungal agent to become licensed for treatment of invasive fungal infecitons [119]. Caspofungin has been used in immunocompromised children and neonates with invasive fungal infections [120]. The second commercial antifungal agent in the echinocandin series was micafungin which has been used worldwide in chemotherapy for life-threatening fungal infections [121].
Mulundocandin (159) and deoxymulundocandin (143) were isolated from Aspergillus sydowii [122] and Aspergillus mulundensis [123], respectively. Both compounds showed antifungal activity against yeasts and filamentous fungi.
PF1171A (161) and PF1171C (162) were isolated from an unidentified ascomycete OK-128. Both compounds showed paralytic activity against silkworms [124]. PF1171C (162) was reisolated as similanamide (162) from the marine sponge-associated fungus Aspergillus similanensis KUFA 0013. It showed weak cytotoxic activity against the cancer cell lines [125,126].
Pneumocandin anlogues (165–172) were isolated from Zalerion arboricola. They all showed anticandial activity by inhibiting 1,3-β-d-glucan synthesis [127,128].
Sclerotides A (173) and B (174) were isolated from Aspergillus sclerotiorum PT06-1. They all showed moderate antifungal activity against Candida albicans. In addition, sclerotide B (174) exhibited antibacterial and cytotoxic activities [129].

6. Cyclic Heptapeptides

There are 37 cyclic heptapeptides isolated from fungi. Their distributions in fungi, and biological activities are listed in Table 5, and the structures are shown in Figure 5.
Cordyheptapeptides A (179) and B (180) were isolated from Cordyceps sp. which is an insect fungal pathogen [147,148]. Cordyheptapeptides C (181), D (182) and E (183) were isolated from the marine-derived fungus Acremonium persicinum SCSIO 115 [149]. Cordyheptapeptides A (179), B (180), C (181) and E (183) all showed cytotoxic activity [148,149].
Phallotoxins (191–197) were bicyclic heptapeptides cross-linked by the 2’-bound sulfur group from the poisonous mushroom Amanita phalloides. Seven phallotoxins: phallacidin (191), phallacin (192), phallisacin (193), phallisin (194), phalloidin (195), phalloin (196), and prophallin (197), have been identified so far [150]. Phallotoxins were shown to be ribosomally synthesized and posttranslationally modified peptides (RiPPs) [151].
Scytalidamides A (198) and B (199) were isolated from Acremonium sp. [152] and Scytalidiu sp. [153], respectively. Both compounds showed cytotoxic activity toward HCT-116 human colon adenocarcinoma with IC50 values of 2.7 and 11.0 μM, respectively [153].
Unguisins A–D (206–209) were isolated from Emericella unguis [154,155], unguisin E (210) from Aspergillus sp. AF119 [156] and Mucor irregularis [157], and unguisin F (211) from Mucor irregularis [157]. Only unguisins A (206) and B (207) were screened to display moderate antibacterial activity [154,155]. Further investigation showed that unguisin A (206) was an anion receptor with high affinity for phosphate and pyrophosphate [158].
Virotoxins (177,178,184,185,212,213) are mono-cyclic heptapeptides containg a tryptophan residue substituted at position 2 of the indol ring by a sulfur atom. A series of virotoxins such as aladesoxiviroidin (177), alaviroidin (178), deoxoviroidin (184), deoxoviroisin (185), viroidin (212), and viroisin (213) have been identified from the mushrooms Amanita phalloides and Amanita virosa so far. They were toxic to animals [150,159].

7. Cyclic Octapeptides

The distributions and biological activities of fungal cyclic octapeptides are listed in Table 6, and the structures are shown in Figure 6.
Fungal cyclic octapeptides mainly include the amatoxins, which are bicyclic octapeptides distributed in the poisonous mushroom Amanita phalloides. Nine amatoxin analogs amanin (214), amanin amide (215), amanullin (216), amanullinic acid (217), α-amanitin (218), β-amanitin (219), γ-amanitin (220), ε-amanitin (221), and proamanullin (225) have been identified [150]. The most important biochemical effect of amatoxins is the inhibition of RNA polymerases (especially polymerase II). This interaction leads to a tight complex, and the inhibition is of a non-competitive type. Non-mammalian polymerases show little sensitivity to amanitins. The amatoxins cause necrosis of the liver, also partly in the kidney, with the cellular changes causing the fragmentation and segregation of all nuclear components. Various groups of somatic cells of emanation resistance have been isolated, including from a mutant of Drosophila melanogaster [150].
Amatoxins are synthesized as proproteins on ribosomes, and are considered as ribosomally synthesized and post-translationally modified peptides (RiPPs). The proproteins are 34–35 amino acids in length and do not have predicted signal peptides [151].
Epichlicin (222) was isolated from the endophytic fungus Epichloe typhina from the timothy plant (Pheum pretense). This compound exhibited inhibitory activity toward the spore germination of Cladosporium phlei, a fungal pathogen of the timothy plant at an IC50 value of 22 nM [166].
Both epichloeamide (223) and epichloenin A (224) were identified from the endophytic fungus Epichloe festucae and endophyte-infected Lolium perenne [160].
Shearamide A (226) was isolated from the ascostromata of Eupenicillium shearii. This compound showed insecticidal effect against Helicoverpa zea larvae [167].

8. Cyclic Nonapeptides

Only four cyclic nonapeptides have been identified in fungi, with their occurrence, biological activities and structures shown in Table 7 and Figure 7, respectively. Amanexitide (227) was isolated from the fruiting bodies of Amanita exitialis, a poisonous mushroom endemic in China [168]. Both clonostachysins A (228) and B (229) were obtained from a marine sponge-derived fungus Clonostachys rogersoniana strain HJK9. They exhibited a selectively inhibitory activity on the dinoflagellate Prorocentrum micans at 30 μM [170]. Cylindrocyclin A (230) from Cylindrocarpon sp. exhibited cytotoxic activity against six cell lines with IC50 values ranging from 11 to 53 μM [171].

9. Cyclic Decapeptides

A total of seven cyclic decapeptides were identified in fungi. Their distributions, biological activities and structures are shown in Table 8 and Figure 8.
Antamanide (231) derived from the fungus Amanita phalloides inhibited the mitochondrial permeability transition pore, a central effector of apoptosis induction, by targeting the pore regulator cyclophillin D [172].
Arborcandins A–F (232–237) were isolated from the culture broth of an unidentified filamentous fungus SANK 17397. They possessed potent 1,3-β-glucan synthase inhibitory activity [173,174].

10. Cyclic Undecapeptides

Twenty-six cyclosporin analogs were identified in fungi. They belong to the cyclic undecapeptide group, and their distributions, biological activities and structures are shown in Table 9 and Figure 9, respectively.
Among them, cyclosporin A (238) has received the most meticulous attention owing to its immunosuppressive and antifungal activity [176]. Cyclosporin A (238) can be produced by a series of fungi such as Aspergillus fumigatus [177], Aspergillus terreus [178], Beauveria nivea [179], Fusarium oxysporum [180], Trichoderma polysporum [181], Tolypocladium inflatum [182], and Tolypocladium sp. [183]. It was mainly produced by various types of fermentation techniques using Tolypocladium inflatum. It has a variety of biological activities including immunosuppressive, anti-inflammatory, antifungal and antiparasitic properties. The mechanism of action has been considered as the phosphatase activity inhibition of calcineurin, and production of IL-2 and other cytokines [176].
FR901459 (263), a derivative of cyclosporin A (238), was discovered in the fermentation broth of Stachybotrys chartarum No. 19392 (isolated from soil collected in Tokyo Prefecture, Japan). This compound showed antifungal activity, and was capable of prolonging the survival time of skin allografts in rats with one-third the potency of cyclosporin A [184]. It also prevented mitochondrial swelling and protected against delayed neuronal cell death [185].

11. Cyclic Dodecapeptides

Omphalotin analogs are the only cyclic dodecapeptides idolated from fungi so far. Omphalotins (264–272) were isolated from the basidiomycetes mushroom Omphalotus olearius. These compounds are toxic to humans and animals. Their distributions, biological activities and structures are shown in Table 10 and Figure 10, respectively. Nine cyclic dodecapeptides omphalotins A–I (264–272) with nematicidal activity were identified in the mushroom O. olearius [191,192]. They have been considered as the potent nematicidal agents that seemed to be highly selective for Meloidogyne incognita [193]. Omphalotins were recently identified as the ribosomally synthesized and posttranslationally modified peptides (RiPPs). A self-sacrificing N-methyltransferase was shown to be the precursor of omphalotin A (264) [194,195,196].

12. Cyclic Tetradecapeptides

Only four cyclic tetradecapeptides, verrucamides A–D (273–276), were identified from the plant pathogenic fungus Myrothecium verrucaria that attacked important crop plants and weeds. Their distributions, biological activities and structures are shown in Table 11 and Figure 11, respectively. They were screened to show antibacterial activity against Staphylococcus aureus [200].

13. Cyclic Octadecapeptides

Only two highly N-methylated cyclic octadecapeptides namely gymnopeptides A (277) and B (278) were isolated from the mushroom Gymnopus fusipes (Table 12 and Figure 12). They exhibited striking antiproliferative activity on several human cancer cell lines [201]. So far, gymnopeptides A (277) and B (278), constituted by 18 monomers, are the largest cyclic peptides to be isolated from fungi. Fortunately, the total synthesis of gymnopeptides A (277) and B (278) has been achieved [202]. Further biological studies are needed to clarify the aspects of absorption and metabolism of gymnopeptides A (277) and B (278) after consumption of the fruiting bodies by humans, as well as to explore the potential role of these metabolites in the parasitic lifestyle of the mushroom G. fusipes.

14. Cyclic Peptides Containing Ether Bonds in the Core Ring

This group of cyclic peptides contained at least one ether linkage except the normal amide and carbon-carbon bonds in the core ring of each molecule. Their distributions, biological activities and structures are shown in Table 13 and Figure 13, respectively.
Asperipin-2a (279) containing five amino acids was isolated from Aspergillus flavus. It was a bicycle peptide containing two ether linkages that was converted from the repeated sequence containing aromatic residues [203].
HV-toxin M (282), with phytotoxic activity, was isolated from the plant pathogenic fungus Cochliobus victoriae (previously as Helminthosporium victoria) from oat (Avena sativa). This compound had three amino acids in the core rings, and two amino acids linked and attached as the side chains [204].
Phomopsins A (283), B (284) and F (285) were isolated from Phomopsis leptostromiformis [205,206] and Diaporthe toxica [207]. They have a structure similar to HV-toxin M (282). Phomopsins are mycotoxins known to be responsible for fatal liver disease of lupin-fed sheep, and displayed phytotoxic and cytotoxic activities [206,207].
Ustiloxins (286–291) have a 13-membered ring including a phenol ether linkage. They were isolated from the water extract of the false smut balls caused by Ustilaginoidea virens on the panicles of rice plants [208,209,210,211,212]. There are three amino acids in the core ring for each ustiloxin. For ustiloxins C (288), D (289), F (290) and G (291), there is a glycine in the side chain. For ustiloxins A (286) and B (287), there are two amino acids in the side chains, whose tyrosine was modified with norvaline, a non-proteinogenic amino acid. They are biosynthesized by the ribosome, and are ribosomally synthesized and post-translationally modified peptides (RiPPs). The cluster possessed a gene, termed ustA, whose translated product, UstA, contained a 16-fold repeated peptide embedding a tetrapeptide, Tyr-Ala-Ile-Gly, that was converted into the cyclic moiety of ustiloxin B (287) [213]. Through gene inactivation, heterologous expression, and in vitro functional analyses the entire biosynthetic pathway of the ustiloxins was unveiled to involve at least nine enzymes. The oxidative cyclization of the core peptide is not clear yet though [214].

15. Conclusions and Future Perspectives

In this review, we describe the progress on the chemistry and biological activities of the cyclic peptides (excluding cyclic dipeptides and peptides containing ester bonds in the core ring) discovered from fungi during the past 50 years, especially the recent 20 years.
It seems that the fungi in genus Aspergillus can produce various types of cyclic peptides, especially cyclic tripeptides to pentapeptides, while the mushrooms, which we call macroscopic fungi, produce relatively big cyclic peptides such as amanin (an octapeptide), amanexitide (a nonapeptide), antamanide (decapeptide), omphalotins (dodecapeptide), and gymnopeptides (octadecapeptides). Most of cyclosporins, which belong to the cyclic undecapeptides, show immunosuppressive and antifungal activities. The isolated cyclic dodecapeptides have nematicidal activity, tetradecapeptides possess antibacterial activity, and octadecapeptides show antiproliferative activity on several human cancer cell lines. The cyclic peptides with a big ring seem to display more biological activities than the small-ring peptides.
Based on the biosynthetic machineries of fungal cyclic peptides, most of them belong are nonribosomal peptides (NRPs) which are synthesized by multimodular nonribosomal peptide synthetases (NRPSs). Just a few of them belong to the ribosomally synthesized and post-translationally modified peptides (RiPPs) such as α-amanitin (218) from Amanita exitialis [150], asperipin-2a (279) from Aspergillus flavus [203], phallacidin (191) from Amanita bisporigera [216], phomopsin A (283) from Phomopsis leptostromiformis [206], and ustiloxins (286-291) from Ustilaginoidea virens (teleomorph: Villosiclva virens) [208,209,212] and Apsergillus flavus [214], omphalotins (260–268) from Omphalotus olearius [194,195,196].
Some fungal cyclic peptides have potential to be developed into pharmaceuticals and agrochemicals. Some cyclic tetrapeptides such as 1-alaninechlamydocin (24) [30], apicidin (25) [35], AS1387392 (36) [37] and trapoxin A (83) [31] show inhibitory activity on histone deacetylase (HDAC) and have potential applications as therapeutics for spinal muscular atrophy [36], anti-cancer agents [30], antiprotozoal agents [35], and immunosuppressants [37]. Some cyclic peptides with phytotoxic activity show potential applications such as herbicides against weeds [217]. Biological analysis revealed a pro-apoptotic effect for most of the cyclic peptides that indicated that the cyclic peptides could be developed as the pro-apoptotic agents [218].
Some cyclic peptides have been developed as drugs, which are listed in Table 13. One noteworthy example is caspofungin which has strong antifungal activity. Caspofungin is a semisynthetic derivative of pneumocandin B0 (170), a lipophilic cyclic hexapeptide from the fungus Glarea lozoyensis. It was commercialized as the antifungal drug caspofungin acetate (CANCIDAS®) which has subsequently saved thousands of lives [14]. Micafungin was the second approved antifungal agent in the echinocandin series, and has been used worldwide in chemotherapy for life-threatening fungal infections. Micafungin is an inhibitor of 1,3-β-glucan synthase, an enzyme necessary for cell-wall synthesis of several fungal pathogens [121]. Other application examples included cyclosporin A (238), an immunosuppressant isolated from Tolypocladium inflatum [176]; omphalotin A (264), a potent nematicidal agent from Omphalotus olearius [197]; and the echinocandins, antifungal lipopeptides isolated from Glarea lozoyensis, Coleophoma empetri, and Aspergillus nidulans var. echinulatus [219]. Commercial cyclic peptide-derived drugs are listed in Table 14.
It is worth mentioning that many fungal cyclic peptides have been isolated from plant endophytic and marine-derived fungi, which indicates that plant endophytic and marine-drived fungi are mines of biologically active natural products [222,223,224,225,226]. Although the number of fungal cyclic peptides is gradually increasing, it remains a group of natural products with relatively little skeletal diversity. On many occasions, the relative or absolute configurations of the chiral centers have not been determined yet. This remains a challenge for future chemical and spectroscopic work. Many isolated cyclic peptides have not been screened for their biological activities as the quantities obtained were very limited. Even fewer compounds have been the subject of systematic investigations to establish structure-activity relationships. Further high throughput screening of biological activities as well as detailed studies on the action mechanisms of fungal cyclic peptides are needed.

Acknowledgments

This work was co-financed by the grants from the National Key R&D Program of China (2017YFD0201105), and the National Natural Science Foundation of China (31271996).

Author Contributions

Xiaohan Wang performed bibliographic research, drafted and corrected the manuscript. Minyi Lin and Dan Xu retrieved literature, participated in the discussions and supported manuscript corrections. Daowan Lai reviewed the manuscript and helped to revise it. Ligang Zhou conceived the idea, designed the review structure, supervised manuscript drafting, and revised the manuscript. All authors read and approved the final manuscript.

Conflicts of Interest

The authors declare no conflict of interest.

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Molecules 22 02069 g001 550
Figure 1. Structures of the cyclic tripeptides isolated from fungi.
Figure 1. Structures of the cyclic tripeptides isolated from fungi.
Molecules 22 02069 g001
Molecules 22 02069 g002a 550Molecules 22 02069 g002b 550Molecules 22 02069 g002c 550Molecules 22 02069 g002d 550
Figure 2. Structures of the cyclic tetrapeptides isolated from fungi.
Figure 2. Structures of the cyclic tetrapeptides isolated from fungi.
Molecules 22 02069 g002aMolecules 22 02069 g002bMolecules 22 02069 g002cMolecules 22 02069 g002d
Molecules 22 02069 g003a 550Molecules 22 02069 g003b 550Molecules 22 02069 g003c 550
Figure 3. Structures of the cyclic pentapeptides isolated from fungi.
Figure 3. Structures of the cyclic pentapeptides isolated from fungi.
Molecules 22 02069 g003aMolecules 22 02069 g003bMolecules 22 02069 g003c
Molecules 22 02069 g004a 550Molecules 22 02069 g004b 550Molecules 22 02069 g004c 550Molecules 22 02069 g004d 550
Figure 4. Structures of the cyclic hexapeptides isolated from fungi.
Figure 4. Structures of the cyclic hexapeptides isolated from fungi.
Molecules 22 02069 g004aMolecules 22 02069 g004bMolecules 22 02069 g004cMolecules 22 02069 g004d
Molecules 22 02069 g005a 550Molecules 22 02069 g005b 550Molecules 22 02069 g005c 550
Figure 5. Structures of the cyclic heptapeptides isolated from fungi.
Figure 5. Structures of the cyclic heptapeptides isolated from fungi.
Molecules 22 02069 g005aMolecules 22 02069 g005bMolecules 22 02069 g005c
Molecules 22 02069 g006 550
Figure 6. Structures of the cyclic octapeptides isolated from fungi.
Figure 6. Structures of the cyclic octapeptides isolated from fungi.
Molecules 22 02069 g006
Molecules 22 02069 g007 550
Figure 7. Structures of the cyclic nonapeptides isolated from fungi.
Figure 7. Structures of the cyclic nonapeptides isolated from fungi.
Molecules 22 02069 g007
Molecules 22 02069 g008a 550Molecules 22 02069 g008b 550
Figure 8. Structures of the cyclic decapeptides isolated from fungi.
Figure 8. Structures of the cyclic decapeptides isolated from fungi.
Molecules 22 02069 g008aMolecules 22 02069 g008b
Molecules 22 02069 g009 550
Figure 9. Structures of the cyclic undecapeptides isolated from fungi.
Figure 9. Structures of the cyclic undecapeptides isolated from fungi.
Molecules 22 02069 g009
Molecules 22 02069 g010 550
Figure 10. Structures of the cyclic dodecapeptides isolated from fungi.
Figure 10. Structures of the cyclic dodecapeptides isolated from fungi.
Molecules 22 02069 g010
Molecules 22 02069 g011 550
Figure 11. Structures of the cyclic tetradecapeptides isolated from fungi.
Figure 11. Structures of the cyclic tetradecapeptides isolated from fungi.
Molecules 22 02069 g011
Molecules 22 02069 g012 550
Figure 12. Structures of the cyclic octadecapeptides isolated from fungi.
Figure 12. Structures of the cyclic octadecapeptides isolated from fungi.
Molecules 22 02069 g012
Molecules 22 02069 g013a 550Molecules 22 02069 g013b 550
Figure 13. Structures of the fungal cyclic peptides containing ether bonds in the core ring.
Figure 13. Structures of the fungal cyclic peptides containing ether bonds in the core ring.
Molecules 22 02069 g013aMolecules 22 02069 g013b
Table
Table 1. Fungal cyclic tripeptides and their biological activities.
Table 1. Fungal cyclic tripeptides and their biological activities.
NameFungus and its OriginBiological ActivityRef.
Aspochracin (1)Aspergillus kumbius-[24]
Aspergillus ochraceusInsecticidal activity[17]
Aspergillus sclerotiorum PT06-1-[19]
JBIR-15 (2)Aspergillus sclerotiorumAntifungal activity[19,25]
Pre-sclerotiotide F (3)Aspergillus insulicola-[26]
Psychrophilin A (4)Penicillium ribeum from a soil under the tree Ribes sp.-[20]
Psychrophilin B (5)Penicillium ribeum from a soil under the tree Ribes sp.-[21]
Psychrophilin C (6)Penicillium ribeum from a soil under the tree Ribes sp.-[21]
Psychrophilin D (7)Penicillium algidumCytotoxic activity[18]
Psychrophilin E (8)Aspergillus versicolor ZLN-60Antiproliferative activity[22,23]
Psychrophilin F (9)Aspergillus versicolor ZLN-60-[23]
Psychrophilin G (10)Aspergillus versicolor ZLN-60Lipid-lowering effect[23]
Psychrophilin H (11)Aspergillus versicolor ZLN-60-[23]
Sclerotiotide A (12)Aspergillus sclerotiorum PT06-1Antifungal activity[19]
Sclerotiotide B (13)Aspergillus sclerotiorum PT06-1Antifungal activity[19]
Sclerotiotide C (14)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide D (15)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide E (16)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide F (17)Aspergillus sclerotiorum PT06-1Antifungal activity[19]
Aspergillus insulicola-[26]
Sclerotiotide G (18)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide H (19)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide I (20)Aspergillus sclerotiorum PT06-1Antifungal activity[19]
Sclerotiotide J (21)Aspergillus sclerotiorum PT06-1-[19]
Sclerotiotide K (22)Aspergillus sclerotiorum PT06-1-[19]
Xyloallenolide A (23)Xylaria sp. No. 2508-[27]
Table
Table 2. Fungal cyclic tetrapeptides and their biological activities.
Table 2. Fungal cyclic tetrapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
1-Alaninechlamydocin (24)Tolypocladium sp.Inhibitory activity on histone deacetyl (HDAC) activity, antiproliferation, cytotoxicity, cell cycle arrest, and apoptosis induction[30]
Apicidin (25)Fusarium pallidoroseumAntimalarial activity[32]
Fusarium semitectumPhytotoxic activity[53]
-Antiprotozoal activity by inhibiting parasite HDAC[35]
Apicidin A (26)Fusarium pallidoroseumAntimalarial activity[32]
Fusarium semitectum-[53]
Apicidin B (27)Fusarium pallidoroseumAntiprotozoal activity[33]
Apicidin C (28)Fusarium pallidoroseumAntiprotozoal activity[33]
Apicidin D1 (29)Fusarium pallidoroseumAntiprotozoal activity[34]
Apicidin D2 (30)Fusarium pallidoroseumAntiprotozoal activity[34]
Fusarium semitectumPhytotoxic activity[53]
Apicidin D3 (31)Fusarium pallidoroseumAntiprotozoal activity[34]
Apicidin E (32)Fusarium semitectum mutant-[54]
Apicidin F (33)Fusarium fujikuroiAntimalarial activity[55]
Apicidin G (34)Fusarium semitectum-[56]
Apicidin H (35)Fusarium semitectum-[56]
AS1387392 (36)Acremonium sp. No. 27082Immunosuppressive activity[37]
Aspercolorin (37)Aspergillus versicolor-[57]
Asperterrestide A (38)Aspergillus terreus SCSGAF0162Cytotoxic and antiviral activity[38]
Auxarthride A (39)Coprophilous fungus Auxarthron pseudauxarthron-[58]
Auxarthride B (40)Coprophilous fungus Auxarthron pseudauxarthron-[58]
Chlamydocin (41)Diheterospora chlantydosporiaCytostatic activity[39]
Penicillium sp. BCC18034Antimalarial and cytotoxic activity[40]
Cyclo[(2S,9R)-9-(acetyloxy)-2-amino-8-oxodecanoyl-2-methylalanyl-l-phenylalanyl-d-prolyl] (42)Peniophora sp.Plant growth-retardant activity[41]
Cyclo[2-methylalanyl-l-phenylalanyl-d-prolyl-(2S)-2-amino-8-oxodecanoyl] (43)Peniophora sp.Plant growth-retardant activity[41]
Cyclo[2-methylalanyl-l-phenylalanyl-d-prolyl-(2S,9R)-2-amino-9-hydroxy-8-oxodecanoyl] (44)Peniophora sp.Plant growth-retardant activity[41]
Verticillium coccosporumPhytotoxic activity[59]
Cyclo(Gly-l-Phe-l-Pro-l-Tyr) (45)Co-culture broth of two mangrove fungi Phomopsis sp. K38 and Alternaria sp. E33Antifungal activity[42]
Cyclo(l-Leu-trans-4-hydroxy-l-Pro-d-Leu-trans-4-hydroxy-l-Pro) (46)Co-culture broth of two mangrove fungi Phomopsis sp. K38 and Alternaria sp. E33Antifungal activity[43]
Cyclo(d-Pro-l-Tyr-l-Pro-l-Tyr) (47)Co-culture broth of two mangrove fungi Phomopsis sp. K38 and Alternaria sp. E33Antifungal activity[42]
Cyclo(N-methyl-l-Phe-l-Val-N-methyl-Phe-l-Val) (48)Onychocola scleroticaCardiac calcium channel blocker[44]
Cyclo(N-methyl-l-Phe-l-Val-N-methyl-l-Phe-l-Ile) (49)Onychocola scleroticaCardiac calcium channel blocker[44]
Cyclo(N-methyl-l-Phe-l-Ile-N-methyl-l-Phe-l-Ile) (50)Onychocola scleroticaCardiac calcium channel blocker[44]
Cyl-1 (51)Cylindrocladium scopariumPhytotoxic activity[45,46]
Cyl-2 (52)Cylindrocladium scopariumPhytotoxic activity[46,60]
Diheteropeptin (53)Diheterospora sp.TGF-β-like activity[61]
Diheterospora chlamydosporiaTGF-β-like activity[62]
Dihydrotentoxin (54)Alternaria porri-[63]
Phoma sp.-[51]
Endolide A (55)Stachylideium sp. from the sponge Callyspongia sp.Affinity to the vaspopressin receptor 1A with a Ki of 7.04 μM[64]
Endolide B (56)Stachylideium sp. from the sponge Callyspongia sp.Be selevtive toward the serotonin receptor 5HT2b with a Ki of 0.77 μM[64]
Endolide C (57)Marine-sponge-derived Stachylidium sp. 293 K04-[65]
Endolide D (58)Marine-sponge-derived Stachylidium sp. 293 K04-[65]
5,5’-Epoxy-MKN-349A (59)Endophytic fungus Penicillium sp. GD6 from the mangrove Bruguiera gymnorrhiza-[66]
FR235222 (60)Acremonium sp. No. 27082Immunosuppressant that inhibits mammalian histone deacetylase[67,68,69]
Fungisporin (61)Penicillium chrysogenum-[70]
HC-toxin (62)Helminthosporium carbonum = Cochliobolus carbonumPhytotoxic activity[71,72]
Hirsutide (63)Spider-derived fungus Hirsutella sp.-[73]
Isotentoxin (64)Alternaria porri-[63]
JM47 (65)Marine-derived Fusarium sp. from the alga Codium fragile-[29]
Microsporin A (66)Microsporum cf. gypseum CNL-692Inhibitory activity on histone deacetylase; cytotoxic activity[47]
Microsporin B (67)Microsporum cf. gypseum CNL-692Inhibitory activity on histone deacetylase; cytotoxic activity[47]
Nidulanin A (68)Aspergillus nidulans-[74]
Penicopeptide A (69)Endophytic Penicillium commune from Vitis viniferaInhibitrory activity on 11β-hydroxysteroid dehydrogense[48]
PF1070A (70)Calonectria ilicicolaPhytotoxic activity[75]
Humicola sp.Antitumour activity[76]
PF1070B (71)Humicola sp.Antitumour activity[76]
Phoenistatin (72)Acremonium fusigerumEnhancing activity on gene expression[77]
Pseudoxylallemycin A (73)Termite-associated fungus Pseudoxylaria sp. X802Antibacterial and antiproliferative activities[49]
Pseudoxylallemycin B (74)Termite-associated fungus Pseudoxylaria sp. X802Antibacterial and antiproliferative activities[49]
Pseudoxylallemycin C (75)Termite-associated fungus Pseudoxylaria sp. X802Antibacterial and antiproliferative activities[49]
Pseudoxylallemycin D (76)Termite-associated fungus Pseudoxylaria sp. X802Antibacterial and antiproliferative activities[49]
Pseudoxylallemycin E (77)Termite-associated fungus Pseudoxylaria sp. X802-[49]
Pseudoxylallemycin F (78)Termite-associated fungus Pseudoxylaria sp. X802-[49]
Sartoryglabramide A (79)Marine-derived Neosartorya glabra KUFA 0702 from the sponge Mycale sp.-[78]
Sartoryglabramide B (80)Marine-derived Neosartorya glabra KUFA 0702 from the sponge Mycale sp.-[78]
Tentoxin (81)Alternaria linicolaPhytotoxic activity[79]
Alternaria porri-[63]
Phoma sp.-[51]
Tentoxin B (82)Marine-derived fungus Phoma sp. from the giant jellyfish Nemopilema nomuraiWeak suppressive effect on the production of nitric oxide in murine macrophage cells without notable cytotoxicity[51]
Trapoxin A (83)Helicoma ambiens RF-1023Detransformation activity against v-sis oncogene-transformed NIH3T3 cells[52]
-HDAC inhibitory activity[31]
Trapoxin B (84)Helicoma ambiens RF-1023Detransformation activity against v-sis oncogene-transformed NIH3T3 cells[52]
WF-3161 (85)Petriella guttlataAntitumor activity[80]
Table
Table 3. Fungal cyclic pentapeptides and their biological activities.
Table 3. Fungal cyclic pentapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Argadin (86)Clonostachys sp. FO-7314Chitinase inhibitor[81]
Argifin (87)Gliocladium sp. FTD-0668Chitinase inhibitor[82,97]
Aspergillipeptide D (88)Marine gorgonian-derived fungus Aspergillus sp. SCSIO 41501Antiviral activity[84]
Asperpeptide A (89)Marine gorgonian-derived Aspergillus sp. XS-20090B15Antibacterial activity[98]
Avellanin A (90)Hamigera sp.Vasoconstriction and pressor effect[99]
Avellanin B (91)Hamigera sp.Vasoconstriction and pressor effect[99]
Avellanin C (92)Hamigera paravellaneaVasoconstriction and pressor effect[99]
Chrysosporide (93)Sepedonium chrysospermumWeak cytotoxic to murine leukemia cell line[100]
Clavatustide C (94)Aspergillus clavatus C2WU-[101]
Cotteslosin A (95)Aspergillus versicolorWeak cytotoxic to human cancer cell lines[102]
Cotteslosin B (96)Aspergillus versicolorWeak cytotoxic to human cancer cell lines[102]
Cyclo(l-Ile-l-Leu-l-Leu-l-Leu-l-Leu) (97)Endophytic fungus Cryptosporiopsis sp. of Zanthoxylum leprieuriiMotility inhibitory and lytic activities against zoospores; Antifungal activity; weak cytotoxic activity on brine shrimp larvae[103]
Cyclo(l-Leu-l-Leu-d-Leu-l-Leu-l-Ile) (98)Endophytic fungus Fusarium decemcellulare LG53 from Chinese medicinal plant Mahonia fortuneiAntagonistic effect on fungus[104]
Cyclo(l-Leu-l-Leu-d-Leu-l-Leu-l-Leu) (99)Endophytic fungus Fusarium decemcellulare LG53 from Chinese medicinal plant Mahonia fortuneiAntagonistic effect on fungus[104]
Cyclo(l-Leu-l-Leu-d-Leu-l-Leu-l-Val) (100)Endophytic fungus Fusarium decemcellulare LG53 from Chinese medicinal plant Mahonia fortuneiAntagonistic effect on fungus[104]
Cyclo(l-Phe-l-Leu-l-Leu-l-Leu-l-Ile) (101)Unidentified endophytic fungus No. 2524 from the mangrove Avicennia marina-[105]
Cyclo(l-Phe-l-Leu-l-Leu-l-Leu-l-Leu) (102)Endophytic fungus Cryptosporiopsis sp. of Zanthoxylum leprieuriiMotility inhibitory and lytic activities against zoospores; Antifungal activity; Weak cytotoxic activity on brine shrimp larvae[103]
Cycloaspeptide A (103)Aspergillus sp. NE-45-[85]
Penicillium algidumAntiplasmodial activity[18]
Penicillium jamesonlandense-[106]
Penicillium janczewskii-[107]
Penicillium lanosum-[106]
Penicillium ribium-[106]
Penicillium ribeum from a soil under the tree Ribes sp.-[20]
Penicillium soppii-[106]
Cycloaspeptide B (104)Aspergillus sp. NE-45-[85]
Cycloaspeptide C (105)Aspergillus sp. NE-45-[85]
Cycloaspeptide D (106)Penicillium algidumAntiplasmodial activity[18]
Penicillium ribeum from a soil under the tree Ribes sp.-[20]
Cycloaspeptide E (107)Penicillia sp.Insecticidal activity[86]
Tricothecium sp.-[86]
Cycloaspeptide F (108)Isaria farinosaCytotoxic activity[87]
Cycloaspeptide G (109)Isaria farinosaCytotoxic activity[87]
Cyclochlorotine (110)Penicillium islandicumLiver fibrosis, liver injuries[108,109,110]
Hydroxycyclochlorotine (111)Penicillium islandicum-[108]
Islanditoxin (112)Penicillium islandicum-[111]
Lajollamide A (113)Marine-derived fungus Asteromyces cruciatusisWeak antibacterial on Gram-positive bacteria[112]
Malformin A1 (114)Aspergillus nigerMalformation activity in the corn root; Cytotoxic activity[92,93]
Aspergillus tubingensisCytotoxic activity; Anti-TMV activity[89,90]
Malformin A2 (115)Aspergillus niger-[92]
Malformin B1a (116)Aspergillus nigerCurvature activity in the corn root test[88]
Malformin B1b (117)Aspergillus niger-[88]
Malformin B2 (118)Aspergillus niger-[88]
Malformin C (119)Aspergillus nigerAnticancer activity[94,95]
Malformin E (120)Endophytic fungus Aspergillus tamari from Ficus caricaCytotoxic and antibiotic activity[91]
MBJ-0174 (121)Mortierella alpine f28740 from a soil smaple collected in Ise, JapanStimulators of cellular fibrinolytic activity[113]
PF1171B (122)Hamigera sp.-[99]
PF1171D (123)Hamigera sp.-[99]
PF1171E (124)Hamigera sp.-[99]
Pseudacyclin A (125)Animal fungal pathogen Pseudallescheria boydii Immunosuppressive activity[96]
Pseudacyclin B (126)Animal fungal pathogen Pseudallescheria boydii-[96]
Pseudacyclin C (127)Animal fungal pathogen Pseudallescheria boydii-[96]
Pseudacyclin D (128)Animal fungal pathogen Pseudallescheria boydii-[96]
Pseudacyclin E (129)Anmal fungal pathogen Pseudallescheria boydii-[96]
Versicoloritide A (130)Aspergillus versicolor LCJ-5-4-[114]
Versicoloritide B (131)Aspergillus versicolor LCJ-5-4-[114]
Versicoloritide C (132)Aspergillus versicolor LCJ-5-4-[114]
Versicotide A (133)Aspergillus versicolor ZLN-60 from the sediment of the Yellow Sea-[115]
Versicotide B (134)Aspergillus versicolor ZLN-60 from the sediment of the Yellow Sea-[115]
Xylarotide A (135)Xylaria sp. 101-[116]
Xylarotide B (136)Xylaria sp. 101-[116]
Table
Table 4. Fungal cyclic hexapeptides and their biological activities.
Table 4. Fungal cyclic hexapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Aculeacin A (137)Aspergillus aculeatus M-4214 Antifungal activity by inhibiting synthesis of β-1,3-glucan[117,118]
Anthranicine (138)Acremonium sp. A29-2004-[130]
ASP2397 (139)Acremonium persicinum MF-347833 from Malaysian leaf litterAntifungal activity[131]
AS2524371 (140)Acremonium persicinum MF-347833 from Malaysian leaf litter-[131]
AS2488059 (141)Acremonium persicinum MF-347833 from Malaysian leaf litter-[131]
Cryptocandin (142)Cryptosporiopsis cf. quercinaAntifungal activity[132]
Deoxymulundocandin (143)Aspergillus sydowiiAntifungal activity[133]
Aspergillus mulundensisAntifungal activity[123]
Echinocandin B (144)Aspergillus nidulans var. roseus ATCC 58397Antifungal activity[134]
Aspergillus mulundensisAntifungal activity[123]
Echinocandin C (145)Aspergillus sp.Antifungal activity[135]
Aspergillus mulundensisAntifungal activity[123]
Echinocandin D (146)Aspergillus sp.Antifungal activity[135]
Ferrichrome (147)Ustilago maydis-[136]
Ferrichrome A (148)Ustilago maydis-[136]
Ferricrocin (149)Colletotrichum gloeosporioidesPhytotoxic activity[137]
Ferrirhodin (150)Botrytis cinerea-[138]
FR190293 (151)Tolypocladium parasiticum No. 16616Antifungal activity[139]
FR209602 (152)Coleophoma crateriformis No. 738Antifungal activity[140]
FR209603 (153)Coleophoma crateriformis No. 738Antifungal activity[140]
FR209604 (154)Coleophoma crateriformis No. 738Antifungal activity[140]
FR220897 (155)Coleophoma empetri No. 14573Antifungal activity[141]
FR220899 (156)Coleophoma empetri No. 14573Antifungal activity[141]
FR227673 (157)Chalara sp. No. 22210Antifungal activity[139]
FR901379 (158)Coleophoma empetri F-11899Antifungal activity[142]
Mulundocandin (159)Aspergillus sydowiiAntifungal activity[122]
Aspergillus mulundensisAntifungal activity[123]
Penitropeptide (160)Endophytic fungus Penicillium tropicum isolated from leaves of Sapium ellipticum-[143]
PF1171A (161)Unidentified ascomycete OK-128Paralytic activity against silkworms[124]
PF1171C = Similanamide (162)Marine sponge-associated fungus Aspergillus similanensis KUFA 0013Weak cytotoxic activity against the cancer cell lines[125,126]
Hamigera sp.-[99]
Unidentified ascomycete OK-128Paralytic activity against silkworms[124]
PF1171F (163)Unidentified ascomycete OK-128Paralytic activity against silkworms[144]
PF1171G (164)Unidentified ascomycete OK-128Paralytic activity against silkworms[144]
Pneumocandin A0 = L-671,329 (165)Zalerion arboricolaAntipneumocystis, anticandida and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Zalerion arboricolaAntifungal activity[145]
Pneumocandin A1 (166)Zalerion arboricolaAnticandida activity and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin A2 (167)Zalerion arboricolaAnticandida activity and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin A3 (168)Zalerion arboricolaAnticandida activity and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin A4 (169)Zalerion arboricolaAnticandida activity and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin B0 (170)Zalerion arboricolaAntipneumocystis, anticandida and Candida albicans 1,3-β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin B2 (171)Zalerion arboricolaAntipneumocystis, anticandida and Candida albicans 1,3- β-d-glucan synthesis inhibition activity[127,128]
Pneumocandin C0 (172)Zalerion arboricolaAntipneumocystis, anticandida and Candida albicans 1,3- β-d-glucan synthesis inhibition activity[127,128]
Sclerotide A (173)Aspergillus sclerotiorum PT06-1Antifungal activity[129]
Sclerotide B (174)Aspergillus sclerotiorum PT06-1Antifungal, antibacterial and cytotoxic activity[129]
Simplicilliumtide M (175)Deep-sea derived Simplicillium obclavatum EIODSF 020-[146]
Versicotide C (176)Aspergillus versicolor ZLN-60-[23]
Table
Table 5. Fungal cyclic heptapeptides and their biological activities.
Table 5. Fungal cyclic heptapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Aladesoxiviroidin (177)Amanita phalloidesToxic to some animal species[150]
Alaviroidin (178)Amanita phalloidesToxic to some animal species[150]
Cordyheptapeptide A (179)Cordyceps sp. BCC1788Antimalarial activity against Plasmodium falciparum K1[147]
Cordyceps sp. BCC 16176Cytotoxic activity[148]
Cordyheptapeptide B (180)Cordyceps sp. BCC 16176Cytotoxic activity[148]
Cordyheptapeptide C (181)Acremonium persicinum SCSIO 115Cytotoxic activity[149]
Cordyheptapeptide D (182)Acremonium persicinum SCSIO 115-[149]
Cordyheptapeptide E (183)Acremonium persicinum SCSIO 115Cytotoxic activity[149]
Deoxoviroidin (184)Mushroom Amanita virosaHepatotoxicity[159]
Deoxoviroisin (185)Mushroom Amanita virosaHepatotoxicity[159]
Epichloenin B (186)Epichloe festucae-[160]
Mortiamide A (187)Marine-derived Mortierella sp.-[161]
Mortiamide B (188)Marine-derived Mortierella sp.-[161]
Mortiamide C (189)Marine-derived Mortierella sp.-[161]
Mortiamide D (190)Marine-derived Mortierella sp.-[161]
Phallacidin (191)Amanita phalloidesToxic to some animal species[150]
Phallacin (192)Amanita phalloidesToxic to some animal species[150]
Phallisacin (193)Amanita phalloidesToxic to some animal species[150]
Phallisin (194)Amanita phalloidesToxic to some animal species[150]
Phalloidin (195)Amanita phalloidesToxic to some animal species[150]
Phalloin (196)Amanita phalloidesToxic to some animal species[150]
Prophallin (197)Amanita phalloidesToxic to some animal species[150]
Scytalidamide A (198)Acremonium sp.-[152]
Scytalidiu sp.Cytotoxic activity on HCT-116[153]
Scytalidamide B (199)Acremonium sp.-[152]
Scytalidiu sp.Cytotoxic activity on HCT-116[153]
Serinocyclin A (200)Metarhizium anisopliaeInsecticidal activity on mosquito larvae[162]
Serinocyclin B (201)Metarhizium anisopliae-[162]
Talarolide A (202)Marine tunicte-associated fungus Talaromyces sp. CMB-TU011-[163]
Talaromin A (203)Talaromyces wortmannii-[164]
Talaromin B (204)Talaromyces wortmannii-[164]
Ternatin (205)Cladobotryum sp.Cytotoxic activity; antifungal activity[165]
Unguisin A (206)Marine-derived Emericella unguisModerate antibacterial activity[154,155]
Unguisin B (207)Marine-derived Emericella unguisModerate antibacterial activity[154,155]
Unguisin C (208)Marine-derived Emericella unguis-[155]
Unguisin D (209)Marine-derived Emericella unguis-[155]
Unguisin E (210)Aspergillus sp. AF119-[156]
Endophytic fungus Mucor irregularis from the medicinal plant Moringa stenopetala-[157]
Unguisin F (211)Endophytic fungus Mucor irregularis from the medicinal plant Moringa stenopetala-[157]
Viroidin (212)Mushroom Amanita virosa-[159]
Amanita phalloidesToxic to some animal species[150]
Viroisin (213)Mushroom Amanita virosa-[159]
Table
Table 6. Fungal cyclic octapeptides and their biological activities.
Table 6. Fungal cyclic octapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Amanin (214)Amanita phalloidesToxic to some animal species[150]
Amanin amide (215)Amanita phalloidesToxic to some animal species[150]
Amanullin (216)Amanita phalloidesToxic to some animal species[150]
Amanullinic acid (217)Amanita phalloidesToxic to some animal species[150]
α-Amanitin (218)Amanita exitialis-[168]
Amanita subjunquilleaCytotoxic activity[169]
Amanita phalloidesToxic to some animal species[150]
β-Amanitin (219)Amanita exitialis-[168]
Amanita subjunquilleaCytotoxic activity[169]
Amanita phalloidesToxic to some animal species[150]
γ-Amanitin (220)Amanita phalloidesToxic to some animal species[150]
ε-Amanitin (221)Amanita phalloidesToxic to some animal species[150]
Epichlicin (222)Endophytc Epichloe typhina from Phleum pratenseInhibitory activity on the spore germination of Cladosporium phlei[166]
Epichloeamide (223)Epichloe festucae-[160]
Epichloenin A (224)Epichloe festucae-[160]
Proamanullin (225)Amanita phalloidesToxic to some animal species[150]
Shearamide A (226)Eupenicillium sheariiInsecticidal effect[167]
Table
Table 7. Fungal cyclic nonapeptides and their biological activities.
Table 7. Fungal cyclic nonapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Amanexitide (227)Amanita exitialis-[168]
Clonostachysin A (228)Marine-derived fungus Clonostachys rogersoniana HJK9 from spongeAnti-dinoflagellate activity[170]
Clonostachysin B (229)Marine-derived fungus Clonostachys rogersoniana HJK9 from spongeAnti-dinoflagellate activity[170]
Cylindrocyclin A (230)Cylindrocarpon sp.Cytotoxic activity[171]
Table
Table 8. Fungal cyclic decapeptides and their biological activities.
Table 8. Fungal cyclic decapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Antamanide (231)Amanita phalloidesInhibition of the mitochondrial permeability transition pore, antidote activity against phallotoxins and amatoxins, inhibition of tumor cell growth in vitro[172,175]
Arborcandin A (232)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Arborcandin B (233)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Arborcandin C (234)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Arborcandin D (235)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Arborcandin E (236)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Arborcandin F (237)Unidentified fungus SANK 17397Inhibitory activity on 1,3-β-glucan synthase[173,174]
Table
Table 9. Fungal cyclic undecapeptides and their biological activities.
Table 9. Fungal cyclic undecapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Cyclosporin A (238)Aspergillus fumigatus-[177]
Aspergillus terreus NRC FA 200-[178]
Beauveria nivea-[179]
Fusarium oxysporumImmunosuppressive, antifungal, anti-inflammatory, anti-parasitic and anticancer activities[180]
Tolypocladium inflatum-[182]
Tolypocladium sp.-[183]
Trichoderma polysporumAntifungal activity[181]
Cyclosporin B (239)Tolypocladium inflatumImmunosuppressive and antifungal activities[182,186]
Trichoderma polysporumAntifungal activity[181]
Cyclosporin C (240)Acremonium luzulaeAntifungal activity[187]
Tolypocladium inflatumImmunosuppressive and antifungal activities[182,186]
Cyclosporin D (241)Tolypocladium inflatumImmunosuppressive and antifungal activities[182,186]
Trichoderma polysporumAntifungal activity[181]
Cyclosporin E (242)Trichoderma polysporum-[181]
Tolypocladium inflatumImmunosuppressive and antifungal activities[186,188]
Cyclosporin F (243)Tolypocladium inflatumImmunosuppressive and antifungal activities[186,188]
Cyclosporin G (244)Tolypocladium inflatumImmunosuppressive and antifungal activities[182,186,188]
Cyclosportin H (245)Tolypocladium inflatum-[188]
Cyclosportin I (246)Tolypocladium inflatumImmunosuppressive and antifungal activities[186,188]
Cyclosportin J (247)Tolypocladium terricolaIncreased cell proliferation[189]
Cyclosporin K (248)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin L (249)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin M (250)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin N (251)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin O (252)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin P (253)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin Q (254)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin S (255)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin T (256)Epichloe bromicolaAntifungal activity[190]
Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin U (257)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin V (258)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin W (259)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin X (260)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin Y (261)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
Cyclosporin Z (262)Tolypocladium inflatumImmunosuppressive and antifungal activities[186]
FR901459 (263)Stachybotrys chartarum No. 19392 from a soil collected in Tokyo, JapanImmunosuppressive activity[184]
Table
Table 10. Fungal cyclic dodecapeptides and their biological activities.
Table 10. Fungal cyclic dodecapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Omphalotin A = Omphalotin (264)Mushroom Omphalotus oleariusNematicidal activity[191,197,198,199]
Omphalotin B (265)Mushroom Omphalotus oleariusNematicidal activity[191]
Omphalotin C (266)Mushroom Omphalotus oleariusNematicidal activity[191]
Omphalotin D (267)Mushroom Omphalotus oleariusNematicidal activity[191]
Omphalotin E (268)Mushroom Omphalotus oleariusNematicidal activity on Meloidogyne incognita[192]
Omphalotin F (269)Mushroom Omphalotus oleariusNematicidal activity on Meloidogyne incognita[192]
Omphalotin G (270)Mushroom Omphalotus oleariusNematicidal activity on Meloidogyne incognita[192]
Omphalotin H (271)Mushroom Omphalotus oleariusNematicidal activity on Meloidogyne incognita[192]
Omphalotin I (272)Mushroom Omphalotus oleariusNematicidal activity on Meloidogyne incognita[192]
Table
Table 11. Fungal cyclic tetradecapeptides and their biological activities.
Table 11. Fungal cyclic tetradecapeptides and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Verrucamide A (273)Plant pathogenic fungus Myrothecium verrucaria on crops and weedsAntibacterial activity on Staphylococcus aureus[200]
Verrucamide B (274)Plant pathogenic fungus Myrothecium verrucaria on crops and weedsAntibacterial activity on Staphylococcus aureus[200]
Verrucamide C (275)Plant pathogenic fungus Myrothecium verrucaria on crops and weedsAntibacterial activity on Staphylococcus aureus[200]
Verrucamide D (276)Plant pathogenic fungus Myrothecium verrucaria on crops and weedsAntibacterial activity on Staphylococcus aureus[200]
Table
Table 12. Fungal cyclic octadecapeptides and their biological activities.
Table 12. Fungal cyclic octadecapeptides and their biological activities.
NameFungus and its OriginBiological ActivityRef.
Gymnopeptide A (277)Mushroom Gymnopus fusipesAntiproliferative activity on several human cancer cell lines[201]
Gymnopeptide B (278)Mushroom Gymnopus fusipesAntiproliferative activity on several human cancer cell lines[201]
Table
Table 13. Fungal cyclic peptides containing ether bonds in the core ring and their biological activities.
Table 13. Fungal cyclic peptides containing ether bonds in the core ring and their biological activities.
NameFungus and Its OriginBiological ActivityRef.
Asperipin-2a (279)Aspergillus flavus-[203]
S-Deoxyustiloxin H (280)Aspergillus flavus-[214]
N-Desmethylustiloxin F (281)Aspergillus flavus-[214]
HV-toxin M (282)Plant pathogenic fungus Cochliobus victoriae = Helminthosporium victoria from oatPhytotoxic activity[205]
Phomopsin A (283)Plant pathogenic fungus Phomopsis leptostromiformis from lupinis (Lupinus spp.)Phytotoxic activity, toxic to animals[206]
Phomopsin B (284)Plant pathogenic fungus Phomopsis leptostromiformis from lupinis (Lupinus spp.)Toxic to animals[207]
Phomopsin F (285)Plant pathogenic fungus Diaporthe toxicaCytotoxic activity against Hepg2 cells[208]
Ustiloxin A (286)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities[209,211]
Ustiloxin B (287)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities[209,211]
Aspergillus flavus-[213]
Ustiloxin C (288)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities[208]
Ustiloxin D (289)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities [208]
Ustiloxin F (290)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities[209]
Ustiloxin G (291)Plant pathogenic fungus Ustilaginoidea virens from rice false smut ballsCytotoxic, phytotoxic activities[212]
Ustiloxin H (292)Aspergillus flavus-[214]
Victorin C (293)Plant pathogenic fungus Cochliobus victoriae = Helminthosporium victoria Phytotoxic activity[215]
Table
Table 14. Some examples of the commercial drugs developed from fungal cyclic peptides.
Table 14. Some examples of the commercial drugs developed from fungal cyclic peptides.
Product NameOriginal Cyclic PeptideDevelopment WayApplicationRef.
AnidulafunginEchinocandin B (144)SemisynthesisAntifungal agent[220]
CANCIDAS®Pneumocandin B0 (170)SemisynthesisAntifungal agent[14]
CaspofunginEchinocandinsDirect applicationAntifungal agent for many Candida infections[120]
Cyclosporin ACyclosporin A (238)Direct applicationImmunosuppressive and antifungal drug[176]
MicafunginEchinocandinsSemisynthesisAntifugal agent[221]

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Wang, X.; Lin, M.; Xu, D.; Lai, D.; Zhou, L. Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides. Molecules 2017, 22, 2069. https://doi.org/10.3390/molecules22122069

AMA Style

Wang X, Lin M, Xu D, Lai D, Zhou L. Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides. Molecules. 2017; 22(12):2069. https://doi.org/10.3390/molecules22122069

Chicago/Turabian Style

Wang, Xiaohan, Minyi Lin, Dan Xu, Daowan Lai, and Ligang Zhou. 2017. "Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides" Molecules 22, no. 12: 2069. https://doi.org/10.3390/molecules22122069

APA Style

Wang, X., Lin, M., Xu, D., Lai, D., & Zhou, L. (2017). Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides. Molecules, 22(12), 2069. https://doi.org/10.3390/molecules22122069

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