Fig3F_STOML2_ExtFig5F_BCAP31_RACE_R2_LG302.tif

HEK293T ishXrn1 cells were treated with doxycycline for 3-4 days to induce knock down of Xrn1, then transfected with PA-X from the influenza A/Puerto Rico/8/1984 (H1N1) or vector, and luciferase reporters with a 99 bp inserted sequences from the STOML2 or BCAP31 genes, either wild-type or containing a GCTG --> TAGC mutation. RNA was collected 24 hrs later and analyze by 5' RACE using a primer that binds to luciferase sequences.

将携带靶向Xrn1的诱导型短发夹RNA的HEK293T细胞（HEK293T ishXrn1 cells）用多西环素（doxycycline）处理3~4天以诱导Xrn1基因敲低，随后共转染甲型流感病毒A/波多黎各/8/1984（H1N1）来源的PA-X蛋白表达载体或空载体，以及携带STOML2或BCAP31基因99 bp插入序列的荧光素酶报告基因载体；该插入序列分为野生型与携带GCTG→TAGC突变的突变型两种。转染24小时后收集细胞RNA，采用结合荧光素酶序列的引物通过5'末端快速扩增（5' RACE）技术完成分析。