Fungal Pathogenicity and Host Defense: A Molecular Perspective

A Special Issue of Journal of Fungi (ISSN 2309-608X) belonging to the section "Fungal Genomics, Genetics and Molecular Biology".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 1203

Editors


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Guest Editor
Infection and Immunity, The Lundquist Institute, Torrance, CA 90502, USA
Interests: fungal pathogenesis; fungi-host interaction; immune

E-Mail Website
Guest Editor
1. Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
2. Harvard Medical School, Harvard University, Boston, MA, USA
Interests: antigens; fungal; aspergillosis; aspergillus fumigatus; candida albicans; cryptococcosis; host-pathogen interactions

Special Issue Information

Dear Colleagues,

Fungal pathogenicity is driven by a complex interplay of molecular mechanisms that enable invasion, immune evasion, and tissue damage. Pathogenic fungi deploy virulence factors, such as adhesins, hydrolytic enzymes, and toxins, to breach host barriers and establish an infection. In parallel, host immune responses are activated, which detect fungal pathogen-associated molecular patterns (PAMPs) such as β-glucans and mannans. This recognition triggers innate immune cascades, resulting in cytokine production, phagocytosis, and the enhancement of adaptive immunity. However, fungi can subvert these defenses via immune modulation, antigenic variation, and biofilm formation. Understanding the molecular crosstalk between fungal pathogens and host immunity is critical for identifying novel therapeutic targets and improving antifungal strategies. Recent advances in genomics, transcriptomics, and immunology have illuminated key aspects of this dynamic interaction, offering insights into host susceptibility and resistance.

This Special Issue, titled “Fungal Pathogenicity and Host Defense: A Molecular Perspective”, aims to highlight cutting-edge research on fungal virulence mechanisms and host defense pathways, fostering a deeper understanding of fungal diseases and guiding the development of innovative interventions. Some of its focal points include, but are not limited to, the following:

  1. Fungal pathogenesis.
  2. Fungal virulence factors.
  3. Innate response to fungi.
  4. Adaptive immune response to fungi.
  5. Invasive fungal infections.
  6. Fungal immune modulation.
  7. Fungal immunotherapy.

Reviews, original research, and communications are all welcome.

Dr. Shakti Singh
Dr. Michael K. Mansour
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Fungi is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fungal pathogenesis
  • fungal virulence factors
  • innate response to fungi
  • adaptive immune response to fungi
  • invasive fungal infections
  • fungal immune modulation
  • fungal immunotherapy

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Published Papers (1 paper)

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Research

22 pages, 13126 KB  
Article
The Role of Mitochondrial Protein UPS1 in Regulating Pathogenicity of Candida albicans
by Qianwen Xu, Changlong Xie, Dinghui Wang, Xiaoxiao Zhu, Wenfan Wei, Xiaojia Niu, Tianming Wang, Hongchen Wang and Daqiang Wu
J. Fungi 2026, 12(6), 411; https://doi.org/10.3390/jof12060411 - 4 Jun 2026
Viewed by 725
Abstract
The mitochondrial membrane protein UPS1, a conserved intermembrane space protein in Saccharomyces cerevisiae, possesses phosphatidic acid transfer activity and plays a positive regulatory role in processes such as cardiolipin metabolism and transport. The role of UPS1 protein in pathogenic fungi such as [...] Read more.
The mitochondrial membrane protein UPS1, a conserved intermembrane space protein in Saccharomyces cerevisiae, possesses phosphatidic acid transfer activity and plays a positive regulatory role in processes such as cardiolipin metabolism and transport. The role of UPS1 protein in pathogenic fungi such as Candida albicans has not been explored, especially in relation to its influence on virulence factors like hyphal growth and biofilm formation, which are crucial for the pathogenicity of C. albicans. The research investigated the function of the UPS1 protein in C. albicans by using gene knockout techniques, analyzing mitochondrial function, and conducting tests for hyphal and biofilm development. The results revealed that deletion of the UPS1 gene leads to altered mitochondrial morphology, increased reactive oxygen species levels, and reduced intracellular ATP content, thereby causing severe growth defects in C. albicans. In addition, transcriptomic analysis indicated that loss of UPS1 significantly represses the expression of genes associated with hyphal growth and biofilm formation. Functional assays further confirmed that UPS1 deficiency markedly impairs cell adhesion capability, hyphal development, and biofilm formation of C. albicans. Notably, deletion of the UPS1 protein markedly reduces the susceptibility of C. albicans to membrane-targeted antifungal drugs. Finally, infection models using Galleria mellonella larvae and a murine vulvovaginal candidiasis model verified that UPS1 gene knockout attenuates the pathogenicity of C. albicans. In summary, our findings demonstrate that UPS1 protein modulates the pathogenicity of C. albicans by regulating mitochondrial function, hyphal growth, and biofilm formation. Full article
(This article belongs to the Special Issue Fungal Pathogenicity and Host Defense: A Molecular Perspective)
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