Functional implications of T cell receptor diversity.
Functional implications of T cell receptor diversity.
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DOI:
10.1016/j.coi.2009.05.004
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发表时间:
2009-06
影响因子:
7
通讯作者:
Doherty PC
中科院分区:
文献类型:
--
作者:
Turner SJ;La Gruta NL;Kedzierska K;Thomas PG;Doherty PC
Naive T cells are recruited into any given host response by recognizing a spectrum of possible antigens with “sufficient” avidity. Does selecting a more functionally diverse array give better immune control? Perhaps low avidity “killers” that “kiss and run” operate optimally to eliminate virus-infected targets, while high avidity “helpers” that stay faithfully in place produce more cytokine. Recent findings indeed suggest that selection of a broad T cell receptor repertoire is characteristic of the initial phase following antigen contact, while continued exposure leads to further cycles of division and the progressive numerical dominance of “best-fit” clonotypes. Here we review recent advances demonstrating a link between T cell repertoire diversity and immunity to infection, and consider the potential mechanisms at play.
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