CD8 memory T cells: cross-reactivity and heterologous immunity.
CD8 memory T cells: cross-reactivity and heterologous immunity.
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DOI:
10.1016/j.smim.2004.08.014
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发表时间:
2004-10
影响因子:
7.8
通讯作者:
Welsh RM
中科院分区:
文献类型:
--
作者:
Selin LK;Cornberg M;Brehm MA;Kim SK;Calcagno C;Ghersi D;Puzone R;Celada F;Welsh RM
Virus-specific memory T cell populations demonstrate plasticity in antigen recognition and in their ability to accommodate new memory T cell populations. The degeneracy of T cell antigen recognition and the flexibility of diverse antigen-specific repertoires allow the host to respond to a multitude of pathogens while accommodating these numerous large memory pools in a finite immune system. These cross-reactive memory T cells can be employed in immune responses and mediate protective immunity, but they can also induce life-threatening immunopathology or impede transplantation tolerance and graft survival. Here we discuss examples of altered viral pathogenesis occurring as a consequence of heterologous T cell immunity and propose models for the maintenance of a dynamic pool of memory cells.
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