Glomerular immune deposits in murine lupus models may contain histones

Author:

SCHMIEDEKE T1,STOECKL F1,MULLER S2,SUGISAKI Y3,BATSFORD S1,WOITAS R1,VOGT A1

Affiliation:

1. Institute of Medical Microbiology, Freiburg, Germany

2. Institut de Biologie Moleculaire et Cellulaire, CNRS, Strasbourg, France

3. Nippon Medical School, Tokyo, Japan

Abstract

SUMMARY Two types of lupus mice, NZB/NZW F1 female hybrids and mice with graft-rersus-host disease (GVHD). were studied. Histones H3 and H2A were detected by immunofluorcscenee in glomeruli of 22/22 proteinuric GVHD and 8/12 proteinuric NZB/W F1 female mice; in non-proteinuric animals. 3/5 GVHD and 2/27 NZB/W F1 female were positive. Using antibodies to histone peptides it was shown that mainly the N-terminal regions of histones H3 and H2A were exposed in glomerular deposits. Western blot analysis revealed antibodies lo histone subfractions in sera of 33/34 lupus mice that developed proteinuria. This study provides evidence that histones are involved in the pathogenesis of lupus nephritis.

Publisher

Oxford University Press (OUP)

Subject

Immunology,Immunology and Allergy

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