B-Cell suppression in adult mice injected with anti-delta followed by anti-mu mAb.
(2000) Cellular Immunology — Vol. 205, n° 1, p. 40-51 (2000)
Files
pdfdocument.pdf
Restricted Access - Adobe PDF
- 546.27 KB
Details
- Authors
- Abstract
- Cross-linking of surface IgM or IgD B-cell receptors (BCR) with appropriate anti-Ig antibodies induces IgM(high) or IgD(high) B-cell depletion, respectively. The aim of this paper is to analyze how injections of anti-delta followed by anti-mu monoclonal antibodies (mAb) can deplete and suppress B cells and then induce T-independent type 2 antigen tolerance in adult mice even after treatment is stopped. The experimental protocol consisted of three daily injections of anti-delta mAb followed by repeated injections of anti-mu mAb. It shows that a sequential injection of anti-delta and anti-mu mAb induces B-cell depletion and T-independent type 2 response downregulation. Morever, the T-dependent response is maintained, except for the IgG3 isotype. After clearance of the anti-delta mAb from the circulation, B cells reappear as an IgD(+) IgM(-) B-cell population in the bone marrow (BM) and spleen. The origin of IgD(+) IgM(-) cells was studied in scid mouse transfer models. We show that IgD(+) IgM(-) B cells are not mature cells reexpressing sIgD but BM-derived cells that require a T-cell presence to be developed. The lack of sIgM expression by posttranscriptional regulation and the need of T-cell help for escaping anti-mu negative selection suggest strongly that this population had properties similar to those of anergized B cells. These results support the potential use of sequential injections of anti-delta and anti-mu in the prevention of xenograft rejection.
- Affiliations
Citations
Chentoufi, A. A., Nizet, Y., Havaux, X., Nisol, F., Bazin, H., & Latinne, D. (2000). B-Cell suppression in adult mice injected with anti-delta followed by anti-mu mAb. Cellular Immunology, 205(1), 40-51. https://doi.org/10.1006/cimm.2000.1705 (Original work published 2000)