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2014 ; 1
(3
): 166-172
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T Follicular Helper Cells in Transplantation: The Target to Attenuate
Antibody-Mediated Allogeneic Responses?
#MMPMID25927019
Baan CC
; de Graav GN
; Boer K
Curr Transplant Rep
2014[]; 1
(3
): 166-172
PMID25927019
show ga
Antibody-mediated, humoral rejection has been recognized as a common cause of
transplant dysfunction and is responsible for 30-50 % of failed allografts. The
production of antibody is dependent on instructions from memory CD4+ T helper
cells that interact with antigen-specific B cells. Recently, a specialized T-cell
subset has been identified-T follicular helper (Tfh) cells-which support
activated B cells via interleukin (IL)-21 after binding to the IL-21 receptor
expressed by these B cells. Therefore, neutralizing the IL-21 pathway will
selectively inhibit the allogeneic IL-21-driven Tfh- and B-cell functions.
However, little is known of the role of Tfh cells in alloreactivity. In this
review, we debate the role of Tfh cells in B-cell-mediated allogeneic responses
by discussing their mechanisms of actions. In addition, we speculate about the
use of agents that intervene in Tfh-B-cell interaction and consequently prevent
or treat antibody-mediated rejection in patients after transplantation.