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Mar. Drugs 2016, 14(11), 194; doi:10.3390/md14110194

Natural Proline-Rich Cyclopolypeptides from Marine Organisms: Chemistry, Synthetic Methodologies and Biological Status

1
School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
2
Laboratory of Peptide Research and Development, School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, Saint Augustine, Trinidad and Tobago, West Indies
3
School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar 196, Ethiopia
These authors contribute equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: Se-Kwon Kim
Received: 11 September 2016 / Revised: 2 October 2016 / Accepted: 15 October 2016 / Published: 26 October 2016
(This article belongs to the Special Issue Marine Proteins and Peptides)
View Full-Text   |   Download PDF [2136 KB, uploaded 26 October 2016]   |  

Abstract

Peptides have gained increased interest as therapeutics during recent years. More than 60 peptide drugs have reached the market for the benefit of patients and several hundreds of novel therapeutic peptides are in preclinical and clinical development. The key contributor to this success is the potent and specific, yet safe, mode of action of peptides. Among the wide range of biologically-active peptides, naturally-occurring marine-derived cyclopolypeptides exhibit a broad range of unusual and potent pharmacological activities. Because of their size and complexity, proline-rich cyclic peptides (PRCPs) occupy a crucial chemical space in drug discovery that may provide useful scaffolds for modulating more challenging biological targets, such as protein-protein interactions and allosteric binding sites. Diverse pharmacological activities of natural cyclic peptides from marine sponges, tunicates and cyanobacteria have encouraged efforts to develop cyclic peptides with well-known synthetic methods, including solid-phase and solution-phase techniques of peptide synthesis. The present review highlights the natural resources, unique structural features and the most relevant biological properties of proline-rich peptides of marine-origin, focusing on the potential therapeutic role that the PRCPs may play as a promising source of new peptide-based novel drugs. View Full-Text
Keywords: proline-rich cyclic peptide; marine sponge; marine tunicate; peptide synthesis; stereochemistry; lipophilicity parameter; pharmacological activity proline-rich cyclic peptide; marine sponge; marine tunicate; peptide synthesis; stereochemistry; lipophilicity parameter; pharmacological activity
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Fang, W.-Y.; Dahiya, R.; Qin, H.-L.; Mourya, R.; Maharaj, S. Natural Proline-Rich Cyclopolypeptides from Marine Organisms: Chemistry, Synthetic Methodologies and Biological Status. Mar. Drugs 2016, 14, 194.

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