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白色念珠菌CaECM25基因对细胞形态发生、细胞增殖及致病性的影响
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作者 张婷婷 李万杰 +2 位作者 李迪 王跃 桑建利 《中国科学(C辑)》 CSCD 北大核心 2008年第3期238-249,共12页
白色念珠菌(Candida albicans)作为一种重要的机会性病原真菌,其致病性与细胞形态、细胞壁构成以及细胞生长速率都有着密切的关系.通过同源比对,在白色念珠菌中克隆了CaECM25基因,并构建了Caecm25△/△缺失突变体,对其是否影响细胞形态... 白色念珠菌(Candida albicans)作为一种重要的机会性病原真菌,其致病性与细胞形态、细胞壁构成以及细胞生长速率都有着密切的关系.通过同源比对,在白色念珠菌中克隆了CaECM25基因,并构建了Caecm25△/△缺失突变体,对其是否影响细胞形态发生、细胞壁代谢以及致病性等进行了分析.结果显示,该基因的缺失会导致母细胞和子细胞分离异常,细胞生长速率明显变慢,真菌丝和假菌丝的伸长受阻,细胞黏附能力有所降低.动物实验模型表明,CaECM25基因的缺失会导致白色念珠菌毒力的下降.由此推测,白色念珠菌CaEcm25p为细胞壁合成与代谢以及细胞形态发生所需,并与其致病性相关. 展开更多
关键词 白色念珠菌(Candida albicans) caecm25 基因敲除 形态发生 致病性
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Role of CaECM25 in cell morphogenesis,cell growth and virulence in Candida albicans
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作者 ZHANG TingTing LI WanJie +2 位作者 LI Di WANG Yue SANG JianLi 《Science China(Life Sciences)》 SCIE CAS 2008年第4期362-372,共11页
Candida albicans is the most prominent opportunistic fungal pathogen in humans. Multiple factors are associated with the virulence of C. albicans, including morphogenesis, cell wall organization and growth rate. Here,... Candida albicans is the most prominent opportunistic fungal pathogen in humans. Multiple factors are associated with the virulence of C. albicans, including morphogenesis, cell wall organization and growth rate. Here, we describe the identification and functional characterization of CaECM25, a gene that has not been reported before. We constructed Caecm25?/? mutants and investigated the role of the gene in morphogenesis, cell wall organization and virulence. CaECM25 deletion resulted in defects in cell separation, a slower growth rate, reduced filamentous growth and attenuated adherence to plastic surfaces. The Caecm25?/? mutant was also significantly less virulent than wild type when tested for systemic infection in mice. Therefore, CaECM25 plays important roles in morphogenesis, cell wall organization and virulence. 展开更多
关键词 Candida albicans caecm25 gene knockout MORPHOGENESIS VIRULENCE
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