The early activation of memory B cells from Wiskott-Aldrich syndrome patients is suppressed by CD19 downregulation

Author:

Bai Xiaoming1,Zhang Yongjie1,Huang Lu1,Wang Jinzhi1,Li Wenyan1,Niu Linlin1,Jiang Hongyan1,Dai Rongxin1,Zhou Lina1,Zhang Zhiyong1,Miller Heather2,Song Wenxia3,Zhao Xiaodong1,Liu Chaohong4

Affiliation:

1. Chongqing Key Laboratory of Child Infection and Immunity, Children’s Hospital of Chongqing Medical University, Chongqing, China;

2. Department of Intracellular Pathogens, National Institute of Allergy and Infectious Diseases, Hamilton, MT;

3. Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD; and

4. Department of Pathogen Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China

Abstract

Key Points BCR clustering and B-cell spreading were decreased in WAS memory B cells. CD19-Btk–mediated signaling was decreased, and FcγRIIB-SHIP–mediated signaling was increased in WAS memory B cells.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

Reference48 articles.

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2. The complexity of signaling pathways activated by the BCR.;DeFranco;Curr Opin Immunol,1997

3. Role of the Syk autophosphorylation site and SH2 domains in B cell antigen receptor signaling.;Kurosaki;J Exp Med,1995

4. Follicular dendritic cell-derived antigen and accessory activity in initiation of memory IgG responses in vitro.;Wu;J Immunol,1996

5. Dendritic cells interact directly with naive B lymphocytes to transfer antigen and initiate class switching in a primary T-dependent response.;Wykes;J Immunol,1998

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