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Cell surface changes in the Candida albicans mitochondrial mutant goa1Δ are associated with reduced recognition by innate immune cells

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单位: [1]Georgetown Univ, Med Ctr, Dept Microbiol & Immunol, Washington, DC 20057 USA [2]Chinese Acad Med Sci, Inst Dermatol, Jiangsu Key Lab Mol Biol Skin Dis & STIs, Nanjing 210029, Jiangsu, Peoples R China [3]Jiangsu Prov Hosp Tradit Chinese Med, Dept Dermatol, Nanjing 210029, Jiangsu, Peoples R China [4]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Dept Dermatol, Wuhan 430030, Peoples R China
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We have previously characterized several fungal-specific proteins from the human pathogen Candida albicans that either encode subunits of mitochondria Complex I (CI) of the electron transport chain (ETC) or regulate CI activity (Goa1p). Herein, the role of energy production and cell wall gene expression is investigated in the mitochondria mutant goa1 Delta. We show that downregulation of cell wall-encoding genes in the goa1 Delta results in sensitivity to cell wall inhibitors such as Congo red and Calcofluor white, reduced phagocytosis by a macrophage cell line, reduced recognition by macrophage receptors, and decreased expression of cytokines such as IL-6, IL-10 and IFN-gamma. In spite of the reduced recognition by macrophages, the goa1 Delta is still killed to the same extent as control strains. We also demonstrate that expression of the epithelial cell receptors E-cadherin and EGFR is also reduced in the presence of goa1D. Together, our data demonstrate the importance of mitochondria in the expression of cell wall biomolecules and the interaction of C. albicans with innate immune and epithelial cells. Our underlying premise is that mitochondrial proteins such as Goa1p and other fungal-specific mitochondrial proteins regulate critical functions in cell growth and in virulence. As such, they remain as valid drug targets for antifungal drug discovery.

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出版当年[2012]版:
大类 | 2 区 生物
小类 | 2 区 微生物学 3 区 细胞生物学
最新[2025]版:
大类 | 4 区 生物学
小类 | 4 区 细胞生物学 4 区 微生物学
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出版当年[2011]版:
Q1 MICROBIOLOGY Q1 CELL BIOLOGY
最新[2023]版:
Q3 CELL BIOLOGY Q3 MICROBIOLOGY

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第一作者单位: [1]Georgetown Univ, Med Ctr, Dept Microbiol & Immunol, Washington, DC 20057 USA [2]Chinese Acad Med Sci, Inst Dermatol, Jiangsu Key Lab Mol Biol Skin Dis & STIs, Nanjing 210029, Jiangsu, Peoples R China
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