Transfer of antigen from human B cells to dendritic cells.
Transfer of antigen from human B cells to dendritic cells.
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DOI:
10.1016/j.molimm.2013.10.013
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发表时间:
2014-03
影响因子:
3.6
通讯作者:
Mamula MJ
中科院分区:
文献类型:
--
作者:
Harvey BP;Raycroft MT;Quan TE;Rudenga BJ;Roman RM;Craft J;Mamula MJ
The cooperation of B lymphocytes with other antigen presenting cells (APCs) is often necessary in the efficient processing and presentation of antigen. Herein, we describe a mechanism by which B cells physically interact with dendritic cells (DCs) resulting in the transfer of B cell receptor (BCR)-enriched antigen to these APCs. Antigen transfer involves direct contact between the two cells followed by the capture of B cell derived membrane and intracellular components. Strikingly, DCs acquire greater amounts of antigen by transfer from B cells than by endocytosis of free antigen. Blocking scavenger receptor A, a DC surface receptor involved in membrane acquisition, abrogates these events. We propose that antigen transfer from B cells to DCs results in a more focused immunologic response due to the selective editing of Ag by the BCR.
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