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Local development of effector and memory T helper cells.

著者 Fazilleau N , McHeyzer-Williams LJ , McHeyzer-Williams MG
Curr Opin Immunol.2007 Jun ; 19(3):259-67.
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Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA.

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Clonal evolution underpins all facets of adaptive immunity. In particular, antigen-specific helper T (Th) cell development is central to high-affinity B cell immunity and protective vaccination. Dendritic cell maturation and TCR affinity-based selection mechanisms control the recruitment and effective propagation of preferred antigen-specific Th cell cohorts in local lymphoid tissue. Importantly, follicular B helper T (T(FH)) cells emerge as the specialized local effector Th cells that orchestrate the stepwise development of B cell immunity in these local environments. Recent studies also introduce the role of persistent antigen in the development of effector Th cells with evidence for long-term antigen depots that might contribute to local antigen-specific Th cell memory.
PMID: 17420119 [PubMed - indexed for MEDLINE]
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