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Cross-talk between Tor1 and Sch9 regulates hyphae-specific genes or ribosomal protein genes in a mutually exclusive manner in Candida albicans

Authors
Kim, Se WoongJoo, Yoo JinChun, Yu JinPark, Young KwangKim, Joon
Issue Date
9월-2019
Publisher
WILEY
Citation
MOLECULAR MICROBIOLOGY, v.112, no.3, pp.1041 - 1057
Indexed
SCIE
SCOPUS
Journal Title
MOLECULAR MICROBIOLOGY
Volume
112
Number
3
Start Page
1041
End Page
1057
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/62962
DOI
10.1111/mmi.14346
ISSN
0950-382X
Abstract
The human fungal pathogen Candida albicans switches its morphology from yeast to hyphal forms. The morphological transition may render C. albicans virulent. Several signaling cascades, including those of the cyclic AMP-protein kinase A and mitogen-activated protein kinase pathways, are responsible for morphogenesis. In this study, we observed a reduction in gene transcription of ribosomal proteins during true hyphae formation. Moreover, morphogenesis-dependent decrease in ribosomal protein gene transcription was confirmed in constitutive yeast or filamentous growing strains. We consistently observed that polysome and monosome levels were decreased by hyphal stimuli through TORC1 and Sch9 kinases. Taken together, these results provide several lines of evidence to show that the Tor1-Sch9 kinase cascade, which stimulates transcription of ribosomal protein genes, exists in C. albicans. Thus, the present study revealed a novel link between ribosome biogenesis and morphogenesis in C. albicans that is mediated by Tor1 and Sch9.
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