| Literature DB >> 2788703 |
R L Coffman1, D A Lebman, B Shrader.
Abstract
The addition of TGF-beta to cultures of LPS-stimulated murine B cells causes a approximately 10-fold enhancement of IgA production, yet causes a 10-fold decrease in total Ig production. IL-2 and, to a lesser extent, IL-5 synergize with TGF-beta to further enhance IgA production and partially reverse the inhibition of total Ig production. IgA constitutes only approximately 0.1% of total Ig in LPS-stimulated cultures, but that percentage rises to 15-25% in cultures to which TGF-beta and IL-2 are added. TGF-beta induces a substantial increase in IgA production from sIgA- B cells but inhibits IgA production by sIgA+ cells. This finding suggests that TGF-beta acts as an isotype-specific switch factor for IgA.Entities:
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Year: 1989 PMID: 2788703 PMCID: PMC2189449 DOI: 10.1084/jem.170.3.1039
Source DB: PubMed Journal: J Exp Med ISSN: 0022-1007 Impact factor: 14.307