Anti-human RP105 sera induces lymphocyte proliferation
| العنوان: | Anti-human RP105 sera induces lymphocyte proliferation |
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| المؤلفون: | Zdenka L. Jonak, Karen M. Anderson, Amy K. Roshak, Stephen D. Holmes, Jonathan A. Terrett, Lisa Marshall, Brian Bolognese |
| المصدر: | Journal of Leukocyte Biology. 65:43-49 |
| بيانات النشر: | Oxford University Press (OUP), 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | DNA, Complementary, medicine.drug_class, T-Lymphocytes, Lymphocyte, Blotting, Western, Immunology, Fluorescent Antibody Technique, Spleen, Lymphocyte proliferation, Lymphocyte Activation, Monoclonal antibody, Monocytes, Cell Line, Mice, Antigen, Antigens, CD, medicine, Animals, Humans, Immunology and Allergy, Tissue Distribution, RNA, Messenger, Receptors, Immunologic, B-Lymphocytes, CD40, biology, Reverse Transcriptase Polymerase Chain Reaction, Immune Sera, CD23, Antibodies, Monoclonal, Chromosome Mapping, Membrane Proteins, Cell Biology, Molecular biology, medicine.anatomical_structure, biology.protein, Antibody, Signal Transduction |
| الوصف: | Cellular environment dictates whether antigen binding to the B lymphocyte receptor together with co-stimulatory molecules will result in proliferation, anergy, or apoptosis. Murine RP105 is a member of the leucine-rich repeat family of proteins, which is specifically expressed on mature B cells. Monoclonal antibodies to the murine RP105 induce proliferation and protect B cells from apoptosis, suggesting an important regulatory role in murine B lymphocyte function. We identified a human RP105 homolog and mapped the gene to chromosome 5q 12.3-13.1. Tissue distribution analysis shows that the transcript is found predominately in lymphoid tissues including spleen, tonsils, appendix, and peripheral blood leukocytes. Polymerase chain reaction analysis of isolated primary human cell populations confirms that mRNA exists in spleen B lymphocytes and monocytes but not T lymphocytes. Western blot analysis demonstrates specific expression of human RP105 in human B lymphocytes. Murine anti-human RP105 sera was generated using DNA immunization. The antisera contained antibodies that recognized and bound to human B lymphocytes from both spleen and peripheral blood as assessed by flow cytometry. Assessment of biological function showed that human peripheral blood leukocytes incubated with anti-RP105 sera were induced to proliferate as measured by tritiated thymidine incorporation. Moreover, anti-CD40 and interleukin-4-treated cells but not those exposed to anti-RP105 sera produced soluble CD23, suggesting distinct functional roles. This is the first demonstration of both the existence of RP105 protein on human B lymphocytes and its role in the regulation of B lymphocyte activation. J. Leukoc. Biol. 65: 43–49; 1999. |
| تدمد: | 1938-3673 0741-5400 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1997b00414ebb7fdfd465a2e690a9128 https://doi.org/10.1002/jlb.65.1.43 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....1997b00414ebb7fdfd465a2e690a9128 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19383673 07415400 |
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