Expression and specific cell response of autoantigen Dsg3 in pemphigus vulgaris / 中国免疫学杂志

Objective:In view of analysis of role of autoantigen Dsg3 in specific T cell response to understand the molecular mechanism of autoimmune diseases.Methods:Based on the sequence analysis of autoantigen Dsg3,the five fractions cDNAs of Dsg3 were cloned and Dsg3-GST fusion proteins induced by IPTG in E.coli.JM109 were purified,then mixed-cultured with T cell from PV patients.The T cell proliferation response were analyzed by MTT.Results:Dsg3 E1,E2 and E4,E5 stimulated T cell from PV patients,not controls.Conclusion:Dsg3 E1,E2 and E4,E5 contained the epitopes relevant to T-B cell interaction,which play an important role in the pathogenesis of pemphigus vulgaris.