原代T细胞的基因操作利器
T细胞及其特性简介
T细胞(T cell、T淋巴細胞/T lymphocyte)是淋巴细胞的一种,在免疫反应中扮演着重要的角色。T细胞在胸腺内分化成熟,成熟后移居于周围淋巴组织中。随着细胞免疫治疗的日益深入,T细胞的基因工程化改造显得越来越重要。
然后,T细胞的基因操作却异常困难,普通的DNA质粒很难转染,即使是病毒介导的基因转染操作,也有不少难题,主要体现在几个方面:
1.常规的慢病毒、逆转录病毒,由于1)T细胞膜上受体的不稳定;2)非激活的T细胞本身无增殖能力;3)T细胞内部有阻碍反转录的机制等原因而导致慢病毒和逆转录病毒的T细胞感染能力偏弱,需要多次重复感染,且对于实验操作的条件要求十分苛刻。
2.体外培养的T细胞本身十分敏感且脆弱,慢病毒感染对细胞的状态影响非常大。
3.T细胞是悬浮细胞,进一步增大了病毒有效的难度。
汉恒原代T细胞感染实例——使用悬浮细胞专用腺病毒ads感染
悬浮细胞专用腺病毒Ads感染小鼠原代CD4+ T细胞
细胞:小鼠原代CD4+ T细胞
刺激方式:CD3/CD28抗体和IL-2激活48h
病毒:Ads-GFP, 1×10^10 PFU/ml
使用方式:MOI=500
悬浮细胞专用腺病毒Ads感染人原代CD4+ T细胞
细胞:人原代CD4+ T细胞
刺激方式:CD3/CD28抗体和IL-2激活48h
病毒:Ads-GFP, 1×10^10 PFU/ml
使用方式:MOI=100
汉恒原代T细胞感染实例——使用慢病毒和逆转录病毒感染
原代T细胞专用病毒-慢病毒感染人原代CD4+ T细胞
细胞:人原代CD4+ T细胞
刺激方式:CD3/CD28抗体和IL-2激活48h
病毒:hTLv-GFP,1*10^8 TU/ml
使用方式:MOI=50
原代T细胞专用病毒-逆转录病毒感染小鼠原代CD4+ T细胞
细胞:小鼠原代CD4+ T细胞
刺激方式:CD3/CD28抗体和IL-2激活48 h
病毒:T细胞专用逆转录病毒mTRv-GFP,1×108 TU/ml
使用方式:MOI=100
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