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目的:尝试以反义RNA的方法抑制Galα(1,3)Gal抗原表位(gal抗原)的表达.方法:以人腺病毒载体表达猪α(1,3)半乳糖基转移酶基因的反义RNA.流式细胞术比较H血型抗原和gal抗原的表达水平.结果:构建了表达反义RNA的重组腺病毒载体Ad5anti-sGT600和Ad5anti-sGT1100.反义RNA的表达使NIH3T3细胞表面的gal抗原表位下降约30%.另外,反义RNA与人分泌型α(1,2)岩藻糖基转移酶的共同作用可使gal抗原表位的水平进一步下降.结论:重组腺病毒Ad5anti-sGT600和Ad5anti-sGT1100可有效降低gal抗原表位的表达.
OBJECTIVE: To try to inhibit the expression of Galα (1,3) Gal epitope (gal antigen) by antisense RNA.Methods: The recombinant adenovirus vector expressing porcine α (1,3) galactosyltransferase The expression of H antigen and gal antigen was compared by flow cytometry.Results: Recombinant adenovirus vectors expressing Ad-antisense RNA, Ad5anti-sGT600 and Ad5anti-sGT1100, were constructed.Expression of antisense RNA made the surface gal of NIH3T3 cells The antigen epitope decreased about 30% .In addition, antisense RNA and human secreted α (1,2) fucosyltransferase can make the level of gal antigen epitope further decreased.Conclusion: The recombinant adenovirus Ad5anti- sGT600 and Ad5anti-sGT1100 effectively reduced the expression of gal epitopes.