Germinal center dynamics during acute and chronic infection.
Germinal center dynamics during acute and chronic infection.
复制标题
急性和慢性感染期间的生发中心动态。
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Stanca M. Ciupe
中科院分区:
文献类型:
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作者:
Samantha Erwin;Stanca M. Ciupe
The ability of the immune system to clear pathogens is limited during chronic virus infections where potent long-lived plasma and memory B-cells are produced only after germinal center B-cells undergo many rounds of somatic hypermutations. In this paper, we investigate the mechanisms of germinal center B-cell formation by developing mathematical models for the dynamics of B-cell somatic hypermutations. We use the models to determine how B-cell selection and competition for T follicular helper cells and antigen influences the size and composition of germinal centers in acute and chronic infections. We predict that the T follicular helper cells are a limiting resource in driving large numbers of somatic hypermutations and present possible mechanisms that can revert this limitation in the presence of non-mutating and mutating antigen.
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