Bcl-2+ tonsillar plasma cells are rescued from apoptosis by bone marrow fibroblasts - PubMed (original) (raw)

Bcl-2+ tonsillar plasma cells are rescued from apoptosis by bone marrow fibroblasts

P Merville et al. J Exp Med. 1996.

Abstract

Plasma cells represent the final stage of B lymphocyte differentiation. Most plasma cells in secondary lymphoid tissues live for a few days, whereas those in the lamina propria of mucosa and in bone marrow live for several weeks. To investigate the regulation of human plasma cell survival, plasma cells were isolated from tonsils according to high CD38 and low CD20 expression. Tonsillar plasma cells express CD9, CD19, CD24, CD37, CD40, CD74, and HLA-DR, but not CD10, HLA-DQ, CD28, CD56, and Fas/CD95. Although plasma cells express intracytoplasmic Bcl-2, they undergo swift apoptosis in vitro and do not respond to CD40 triggering. Bone marrow fibroblasts and rheumatoid synoviocytes, however, prevented plasma cells from undergoing apoptosis in a contact-dependent fashion. These data indicate that fibroblasts may form a microenvironment favorable for plasma cell survival under normal and pathological conditions.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Blood. 1993 May 15;81(10):2658-63 - PubMed
    1. J Exp Med. 1995 Nov 1;182(5):1265-73 - PubMed
    1. J Exp Med. 1990 Dec 1;172(6):1873-6 - PubMed
    1. J Immunol. 1988 Jan 15;140(2):354-60 - PubMed
    1. J Immunol. 1983 Jul;131(1):244-50 - PubMed

Publication types

MeSH terms

Substances

LinkOut - more resources