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Published on: October 20, 2023
Proteomic profile of dormant Trichophyton rubrum conidia
Wenchuan Leng1, Tao Liu, Rui Li
1State Key Laboratory for Molecular Virology and Genetic Engineering, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing 100730, PR China. lengwenchuan@gmail.com
Background:
Trichophyton rubrum is the most common dermatophyte causing fungal skin infections in humans. Asexual sporulation is an important means of propagation for T. rubrum, and conidia produced by this way are thought to be the primary cause of human infections. Despite their importance in pathogenesis, the conidia of T. rubrum remain understudied. We intend to intensively investigate the proteome of dormant T. rubrum conidia to characterize its molecular and cellular features and to enhance the development of novel therapeutic strategies.
Results:
The proteome of T. rubrum conidia was analyzed by combining shotgun proteomics with sample prefractionation and multiple enzyme digestion. In total, 1026 proteins were identified. All identified proteins were compared to those in the NCBI non-redundant protein database, the eukaryotic orthologous groups database, and the gene ontology database to obtain functional annotation information. Functional classification revealed that the identified proteins covered nearly all major biological processes. Some proteins were spore specific and related to the survival and dispersal of T. rubrum conidia, and many proteins were important to conidial germination and response to environmental conditions.
Conclusion:
Our results suggest that the proteome of T. rubrum conidia is considerably complex, and that the maintenance of conidial dormancy is an intricate and elaborate process. This data set provides the first global framework for the dormant T. rubrum conidia proteome and is a stepping stone on the way to further study of the molecular mechanisms of T. rubrum conidial germination and the maintenance of conidial dormancy.
Insights
Researchers explored the dormant conidia proteome of Trichophyton rubrum, a common cause of fungal skin infections. This study reveals a complex proteome crucial for fungal survival, dispersal, and response to environmental conditions, aiding therapeutic strategy development.
Area of Science:
- Mycology
- Proteomics
- Molecular Biology
Background:
- Trichophyton rubrum is a prevalent dermatophyte responsible for human fungal skin infections.
- Conidia are the primary infectious agents of T. rubrum, yet remain understudied.
- Understanding conidia is vital for developing new antifungal treatments.
Purpose of the Study:
- To conduct an in-depth proteomic analysis of dormant T. rubrum conidia.
- To characterize the molecular and cellular features of these fungal spores.
- To provide a foundation for novel therapeutic strategies against T. rubrum infections.
Main Methods:
- Shotgun proteomics combined with sample prefractionation and multiple enzyme digestion.
- Identification and comparison of proteins against comprehensive databases (NCBI, GO, KEGG).
- Functional classification of identified proteins to understand biological roles.
Main Results:
- 1026 proteins were identified in dormant T. rubrum conidia.
- Identified proteins encompass diverse biological processes, including spore-specific functions.
- Proteins are involved in survival, dispersal, germination, and environmental response.
Conclusions:
- The proteome of T. rubrum conidia is highly complex.
- Conidial dormancy is maintained through intricate molecular mechanisms.
- This study offers the first global proteomic framework for dormant T. rubrum conidia, paving the way for future research.
