转染细胞全死了的原因
关键词: 来源: 互联网
问:
构建逆转录病毒为载体的DNA(质粒),阳离子脂质体2000(过期的),转染病毒包装细胞pt67,G418筛选,在换液和传代过程中均会有细胞死亡(贴壁细胞漂浮)。求教原因。
换液3.6ml DMEM+0.4ml新生牛血清+24μlG418
传代用胰酶ph 7.2,1ml,用0.3ml新生牛血清中和,800rpm离心5min,弃上清,加入上述培养液。
答:
做一下G418浓度筛选,另外你的对照组未转染的细胞经同样浓度G418筛选后怎样呢?是否本来细胞状态不好?或是根本没有转进去呢?还有就是脂质体本身对细胞就会产生一定的毒性,综合几个方面再做一次转染试试看!我们做转染时候通常G418都是作梯度筛选的。
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