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Monoclon Antib Immunodiagn Immunother. 2013 Apr;32(2):125-31. doi: 10.1089/mab.2012.0121.

A novel anti-human ICOSL monoclonal antibody that enhances IgG production of B cells.

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  • 1Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.

Abstract

ICOSL, a newly identified member of the B7 superfamily, plays a major role in immune responses. In this study, a functional anti-human ICOSL monoclonal antibody (MAb) 3B3 was obtained and characterized by means of flow cytometry, Western blot, and competition assay. This MAb could specifically recognize a distinct epitope of the ICOSL molecule. As a functional antibody, MAb 3B3 could inhibit the proliferation of T lymphocytes stimulated by ICOSL-L929 transfectants. Furthermore, it could enhance IgG production of PWM-driven B cells. The results indicate that the ICOS-ICOSL signal is critically involved in specific humoral immunity.

PMID:
23607348
[PubMed - indexed for MEDLINE]
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