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The role of the B cell receptor V region in peripheral B cell survival.

Abstract : We investigate the role of the antigen-specific B cell receptor (BCR) in the establishment and maintenance of the peripheral B cell pools. We studied the fate of a population of transgenic B cells expressing a BCR without V region (Tg(deltaVmu)). We found that the Tg(deltaVmu) B cells can populate the peripheral B cell pools in the absence of other B cells, but when in the presence of a second population of non-transgenic B cells, they are virtually absent from the mature B cell compartments. By studying the rate of accumulation of 5-bromo-2'-deoxyuridine we show that the peripheral Tg(deltaVmu) B cells have a shorter life-span compared to non-transgenic B cells. By directly comparing the fate of two populations of transgenic B cells, either lacking or expressing a V region, we were able to assign the poorest competitive ability and the short peripheral survival of the Tg(delatVmu) B cells to the lack of an antigen-binding site. The results obtained support the involvement of the V region in the persistence of peripheral B cell populations.
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Contributor : Marie-Christine Vougny Connect in order to contact the contributor
Submitted on : Wednesday, October 8, 2008 - 4:15:09 PM
Last modification on : Thursday, April 7, 2022 - 10:10:16 AM

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Maria Manuela Rosado, Antonio A. Freitas. The role of the B cell receptor V region in peripheral B cell survival.. European Journal of Immunology, 1998, 28 (9), pp.2685-93. ⟨10.1002/(SICI)1521-4141(199809)28:09<2685::AID-IMMU2685>3.0.CO;2-W⟩. ⟨pasteur-00327534⟩



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