Global Stress Responses Identify the Functionally Divergent Regulators Required for <i>Candida auris</i> Commensalism and Pathogenicity

Given its global distribution and high transmissibility in the environment, <i>Candida auris</i> poses a serious threat to global public health. However, the underlying mechanisms of its adaptive strategies remain poorly understood. Here we delineate the pan-genome structures of 1,306 representative <i>C. auris</i> isolates collected from 28 countries. In addition to the clade-related genetic diversity and highly variable pan-genomes, we identify the key regulatory modules and genes specific to <i>C. auris</i> in response to 32 different host microenvironment-mimicking stresses. Through comparative analysis with evolutionarily close fungal relatives, we uncover both shared and species-specific transcriptional responses in <i>C. auris</i>. Intriguingly, our results reveal a distinct pathogenic role for the conserved iron regulon in this species. Unexpectedly, we also identify an evolutionarily divergent functional role for <i>RIM101</i> in regulating both pathogenicity and commensalism of <i>C. auris</i>. Mechanistically, the high-affinity glucose transporters were found to enhance the tolerance to alkaline stress through alleviation of <i>RIM101</i>-dependent glucose repression in the host microenvironment. These findings provide mechanistic insights into the evolutionarily divergent adaptive strategies in both commensalism and virulence of the emerging critical priority fungal pathogen, <i>C. auris</i>.

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Journal
Exploration
Published
2025-11-11
DOI
https://doi.org/10.1002/exp.20240482
Primary Topic
Antifungal resistance and susceptibility
Type
article
Field-Weighted Citation Impact
0.00

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article

Global Stress Responses Identify the Functionally Divergent Regulators Required for Candida auris Commensalism and Pathogenicity

Yueru Tian, Xiaotian Huang, Zhiyi He, Chaoyue Xu et al.
Exploration
Antifungal resistance and susceptibility
article

Global Stress Responses Identify the Functionally Divergent Regulators Required for Candida auris Commensalism and Pathogenicity

Yueru Tian, Xiaotian Huang, Zhiyi He, Chaoyue Xu, Changbin Chen, Yufeng Yuan, Wanxing Xu, Xiaoqi Zheng, Ming Guan, Yuping Zhang, Ning‐Ning Liu, Yun Zou, Dongsheng Zhou, Guangsheng Chen, Zili Zhou, Lingfei Hu, Yuanyuan Wang, Ouyang Mo, Jihong Liu, Luyao Zhang, Lin Zhong, Xiaoqing Chen, Wenwen Xue, Lingbing Zeng, Yanmei Dong, Zhe Yin, Lei Wu, Xinhua Huang, Kunlin Li, Pei Wen Hao, Sichu Xiong
article en

Abstract

Given its global distribution and high transmissibility in the environment, <i>Candida auris</i> poses a serious threat to global public health. However, the underlying mechanisms of its adaptive strategies remain poorly understood. Here we delineate the pan-genome structures of 1,306 representative <i>C. auris</i> isolates collected from 28 countries. In addition to the clade-related genetic diversity and highly variable pan-genomes, we identify the key regulatory modules and genes specific to <i>C. auris</i> in response to 32 different host microenvironment-mimicking stresses. Through comparative analysis with evolutionarily close fungal relatives, we uncover both shared and species-specific transcriptional responses in <i>C. auris</i>. Intriguingly, our results reveal a distinct pathogenic role for the conserved iron regulon in this species. Unexpectedly, we also identify an evolutionarily divergent functional role for <i>RIM101</i> in regulating both pathogenicity and commensalism of <i>C. auris</i>. Mechanistically, the high-affinity glucose transporters were found to enhance the tolerance to alkaline stress through alleviation of <i>RIM101</i>-dependent glucose repression in the host microenvironment. These findings provide mechanistic insights into the evolutionarily divergent adaptive strategies in both commensalism and virulence of the emerging critical priority fungal pathogen, <i>C. auris</i>.

ExplorationVol. 5(6)
Nanchang University (CN), Guangxi Medical University (CN), Shanghai Jiao Tong University (CN), Shanghai Normal University (CN), Fudan University (CN), Academy of Military Medical Sciences (CN), Nanjing Health and Health Commission (CN), Chinese People's Armed Police Force Medical College Affiliated Hospital (CN), First Affiliated Hospital of GuangXi Medical University (CN), Huashan Hospital (CN), First Affiliated Hospital of Nanchang University (CN), Institute of Infection and Immunity (CA), Shenzhen Third People’s Hospital (CN)
National Natural Science Foundation of China, Government of Jiangsu Province, Shanghai Jiao Tong University, State Key Laboratory of Pathogen and Biosecurity, Program of Shanghai Academic Research Leader
Openalex Percentile: Top 61%
Antifungal resistance and susceptibility
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