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Title

5-Azacytidine inhibits the lpr gene-induced lymphadenopathy and acceleration of lupus-like syndrome in MRL/MpJ-lpr/lpr mice
Authors
Yoshida, Haruyoshi
Yoshida, M.
Merino, Ramon
Shibata, T.
Izui, Shozo
Published in European Journal of Immunology. 1990, vol. 20, no. 9, p. 1989-1993
Abstract MRL/MpJ-lpr/lpr mice spontaneously develop a lupus-like autoimmune disorder characterized by massive proliferation of T cells and rapidly fatal immune complex glomerulonephritis. We evaluated the therapeutic effect of 5-azacytidine (5AC), a cytidine analogue known as an inhibitor of DNA methylation, in MRL/MpJ-lpr/lpr mice. Intraperitoneal injection of 5AC (50 micrograms, twice a week) starting from 6 weeks of age retarded the development of lymphadenopathy and autoimmune syndrome. Its beneficial effects included: (a) increased life-span, (b) diminution of lymphadenopathy and splenomegaly, (c) reduction in circulating levels of autoantibodies such as anti-DNA and rheumatoid factors, and (d) suppression of lupus glomerulonephritis. However, similar treatment in BALB/c mice did not affect the development of IgG anti-human IgG antibody responses. These results suggest that the protective effect of 5AC is related to the inhibition of the lpr gene-induced T cell proliferation, thereby suppressing the autoimmunity-accelerating effect mediated by the lpr gene.
Keywords Animals — Autoantibodies/analysis — Autoimmune Diseases/genetics/mortality/ prevention & control — Azacitidine/ therapeutic use — Female — Immunoglobulin G/analysis — Immunosuppressive Agents/pharmacology — Lupus Nephritis/ prevention & control — Lymphoproliferative Disorders/genetics/mortality/ prevention & control — Mice — Mice, Inbred BALB C — Survival Rate — T-Lymphocytes/immunology
Identifiers
PMID: 1698637
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(ISO format) 		YOSHIDA, Haruyoshi et al. 5-Azacytidine inhibits the lpr gene-induced lymphadenopathy and acceleration of lupus-like syndrome in MRL/MpJ-lpr/lpr mice. In: European Journal of Immunology, 1990, vol. 20, n° 9, p. 1989-1993. doi: 10.1002/eji.1830200917 https://archive-ouverte.unige.ch/unige:10997

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Deposited on : 2010-08-26

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