Candida albicans Ubiquitin and Heat Shock Factor-Type Transcriptional Factors Are Involved in 2-Dodecenoic Acid-Mediated Inhibition of Hyphal Growth

Candida albicans Ubiquitin and Heat Shock Factor-Type Transcriptional Factors Are Involved in 2-Dodecenoic Acid-Mediated Inhibition of Hyphal Growth
Title:
Candida albicans Ubiquitin and Heat Shock Factor-Type Transcriptional Factors Are Involved in 2-Dodecenoic Acid-Mediated Inhibition of Hyphal Growth
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Publication Date:
03 January 2020
Citation:
Yang, D.; Hu, Y.; Yin, Z.; Gao, Q.; Zhang, Y.; Chan, F.Y.; Zeng, G.; Weng, L.; Wang, L.; Wang, Y. Candida albicans Ubiquitin and Heat Shock Factor-Type Transcriptional Factors Are Involved in 2-Dodecenoic Acid-Mediated Inhibition of Hyphal Growth. Microorganisms 2020, 8, 75.
Abstract:
Cis-2-dodecenoic acid (i.e., Burkholderia cenocepacia Diffusible Signal Factor, BDSF), a signaling molecule produced by Burkholderia cenocepacia but not by Candida albicans, can prevent Candida albicans hyphal formation. The mechanism by which BDSF controls the morphological switch of C. albicans is still unknown. To address this issue, we used the cDNA microarray method to investigate the differential expression of genes in C. albicans in the presence and absence of BDSF. The microarray result indicated that 305 genes were significantly different in the expression level. This included the downregulation of 75 genes and the upregulation of 230 genes. Based on the microarray data, a mutant library was screened to search for genes, once mutated, conferred insensitivity to BDSF. The results showed that the repressors (Ubi4 and Sfl1 proteins) and the activator (Sfl2 protein) of filamentous growth are involved in the BDSF regulation of hyphal morphogenesis. Ubi4, an ubiquitin polypeptide that participates in ubiquitin-mediated protein turnover, is the protein required for the degradation of Sfl2. Sfl1 and Sfl2 proteins antagonistically control C. albicans morphogenesis. In the hyphal induction condition, the amount of Ubi4 and Sfl1 protein increased rapidly with the exogenous addition of BDSF. As a result, the protein level of the activator of filamentous growth, Sfl2, decreased correspondingly, thereby facilitating the C. albicans cells to remain in the yeast form. View Full-Text
License type:
http://creativecommons.org/licenses/by/4.0/
Funding Info:
This work was financially supported by the National Key Research and Development Program of China (2017YFA0205301, 2017YFA0205302), the Program for Changjiang Scholars and Innovative Research Team inUniversity (IRT_15R37), the Key Research and Development Program of Jiangsu (BE2018732), the Natural Science Key Fund for Colleges and Universities in Jiangsu Province (17KJA430011), the Priority Academic Program Development of Jiangsu Higher Education Institutions (YX03002), the Natural Science Foundation of the Jiangsu Higher Education Institutions (19KJB150030, 19KJB150031), and the open research fund of Jiangsu Key Laboratory for Biosensors (51204080).
Description:
Open Access
ISSN:
2076-2607
2076-2607
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