Abstract:
BACKGROUND:Candida albicans is an opportunistic pathogenic yeast, which could become pathogenic in various stressful environmental factors including the spaceflight environment. In this study, we aim to explore the phenotypic changes and possible mechanisms of C. albicans after exposure to spaceflight conditions. RESULTS:The effect of C. albicans after carried on the "SJ-10" satellite for 12 days was evaluated by proliferation, morphology, environmental resistance and virulence experiment. The result showed that the proliferation rate, biofilm formation, antioxidant capacity, cytotoxicity and filamentous morphology of C. albicans were increased in the spaceflight group compared to the control group. Proteomics and metabolomics technologies were used to analyze the profiles of proteins and metabolites in C. albicans under spaceflight conditions. Proteomic analysis identified 548 up-regulated proteins involved in the ribosome, DNA replication, base excision repair and sulfur metabolism in the spaceflight group. Moreover, 332 down-regulated proteins related to metabolic processes were observed. The metabolomic analysis found five differentially expressed metabolites. The combined analysis of proteomic and metabolomic revealed the accumulation of cysteine and methionine in C. albicans after spaceflight. CONCLUSIONS:Mechanisms that could explain the results in the phenotypic experiment of C. albicans were found through proteomic and metabolomic analysis. And our data provide an important basis for the assessment of the risk that C. albicans could cause under spaceflight environment.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Wang J,Liu Y,Zhao G,Gao J,Liu J,Wu X,Xu C,Li Ydoi
10.1186/s12864-020-6476-5subject
Has Abstractpub_date
2020-01-17 00:00:00pages
57issue
1issn
1471-2164pii
10.1186/s12864-020-6476-5journal_volume
21pub_type
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