A major role for capsule-independent phagocytosis-inhibitory mechanisms in mammalian infection by Cryptococcus neoformans.
A major role for capsule-independent phagocytosis-inhibitory mechanisms in mammalian infection by Cryptococcus neoformans.
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荚膜独立的吞噬抑制机制在哺乳动物新生隐球菌感染中的主要作用。
DOI:
10.1016/j.chom.2011.02.003
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发表时间:
2011-03-17
影响因子:
30.3
通讯作者:
Madhani HD
中科院分区:
文献类型:
--
作者:
Chun CD;Brown JCS;Madhani HD
The anti-phagocytic polysaccharide capsule of the human fungal pathogen Cryptococcus neoformans is a major virulence attribute. However, previous studies of the pleiotropic virulence determinant Gat201, a GATA-family transcription factor, suggested that capsule-independent antiphagocytic mechanisms exist. We have determined that Gat201 controls the mRNA levels of ~1100 genes (16% of the genome) and binds the upstream regions of ~130 genes. Seven Gat201-bound genes encode for putative and known transcription factors—including two previously implicated in virulence—suggesting an extensive regulatory network. Systematic analysis pinpointed two critical Gat201-bound genes, GAT204 (a transcription factor) and BLP1, which account for much of the capsule-independent antiphagocytic function of Gat201. A strong correlation was observed between the quantitative effects of single and double mutants on phagocytosis in vitro and on host colonization in vivo. This genetic dissection provides evidence that capsule-independent anti-phagocytic mechanisms are pivotal for successful mammalian infection by C. neoformans.
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影响因子:
64.5
作者:
Liu OW;Chun CD;Chow ED;Chen C;Madhani HD;Noble SM
通讯作者:
Noble SM
影响因子:
9.8
作者:
Jung WH;Sham A;White R;Kronstad JW
通讯作者:
Kronstad JW
DOI:
10.1073/pnas.091062498
发表时间:
2001-04-24
影响因子:
11.1
作者:
Tusher, VG;Tibshirani, R;Chu, G
通讯作者:
Chu, G
影响因子:
3.1
作者:
Hull, CM;Cox, GM;Heitman, J
通讯作者:
Heitman, J
影响因子:
3.8
作者:
Park, Benjamin J.;Wannemuehler, Kathleen A.;Chiller, Tom A.
通讯作者:
Chiller, Tom A.