CTLA4 Silencing with siRNA Promotes Deviation of Th1/Th2 in Chronic Hepatitis B Patients

作     者：Yongsheng Yu Hao Wu Zhenghao Tang Guoqing Zang 

作者机构：Department of Infectious Diseases. Sixth People＇s Hospital Shanghai Jiaotong University Shanghai 200233 China 

出 版 物：《Cellular & Molecular Immunology》 (中国免疫学杂志（英文版）)

年 卷 期：2009年第6卷第2期

页      面：123-127页

核心收录：

学科分类：1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1002[医学-临床医学] 100211[医学-妇产科学] 100401[医学-流行病与卫生统计学] 10[医学] 

主　　题：CTLA4 siRNA lymphocyte Th1 Th2 

摘      要：To determine whether RNA interference （RNAi） could block cytotoxic T-lymphocyte antigen 4 （CTLA4） in human lymphocytes in vitro and promote IFN-T and IL-2 secretions, three small interfering RNAs （siRNAs） were selected based on target specificity sequences of human CTLA4 and transfected into human lymphocytes of chronic HBV patients. As a result, the expression of human CTLA4 mRNA was efficiently suppressed by all the three siRNAs. Compared with negative control （siRNA-co）, siRNA-1 inhibited the expression of CTLA4 most efficiently and was used in the further study. The expressions of IFN-γ and IL-2 were upregulated and the level of IL-4 was almost unchanged in lymphocytes transfected with siRNA-1 compared with the blank control. These results indicated that siRNA-1 led to IFN-γ and IL-2 secretions, which is a main response of Th1/Th2. In a conclusion, RNAi significantly suppressed the expression of human CTLA4 mRNA in human lymphocytes in vitro, and could induce Th1/Th2 response. It could be a new therapeutic strategy for chronic HBV infection.