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在細胞轉(zhuǎn)染中瞬時轉(zhuǎn)染與穩(wěn)定轉(zhuǎn)染有什么區(qū)別?

時間:2023/10/10閱讀:413
分享:

細胞轉(zhuǎn)染Transfection)是指將外源性基因(如 DNA、RNA、蛋白質(zhì)等)導(dǎo)入到細胞內(nèi)的技術(shù)。轉(zhuǎn)染的目的是產(chǎn)生重組蛋白,或特異性增強或抑制轉(zhuǎn)染細胞中的基因表達。隨著基因和蛋白功能的深入研究,轉(zhuǎn)染已經(jīng)成為科研實驗中常用的技術(shù)手段之一。研究基因功能、調(diào)控基因表達、突變分析和蛋白質(zhì)生產(chǎn)等生物學(xué)試驗中,其應(yīng)用越來越廣泛。在實驗過程中根據(jù)導(dǎo)入的核酸存在于宿主細胞的時間長短,可以分為瞬時轉(zhuǎn)染和穩(wěn)定轉(zhuǎn)染。那么在細胞轉(zhuǎn)染中瞬時轉(zhuǎn)染與穩(wěn)定轉(zhuǎn)染有什么區(qū)別?一起來學(xué)習(xí)一下吧!

瞬時轉(zhuǎn)染(transient transfection):指將構(gòu)建好的質(zhì)粒通過某種方式導(dǎo)入到哺乳動物細胞內(nèi),該質(zhì)粒上的外源基因不整合到細胞自身的基因組上。細胞中瞬時轉(zhuǎn)染的外源基因表達時間有限,通常僅持續(xù)幾天,直到外源基因在細胞分裂過程中因各種因素丟失為止。多用于啟動子和其他調(diào)控元件的分析。目前,由于各種轉(zhuǎn)染試劑的發(fā)明,哺乳動物細胞的瞬時轉(zhuǎn)染已經(jīng)用于生產(chǎn)具有適當(dāng)折疊和翻譯后修飾的重組蛋白。

穩(wěn)定轉(zhuǎn)染(Stable transfected):外源DNA整合到細胞基因組中或作為附加體質(zhì)粒保留在細胞中。與瞬時轉(zhuǎn)染不同,穩(wěn)定轉(zhuǎn)染能夠整合到宿主基因組,因此轉(zhuǎn)染細胞及其子代細胞的基因組中會同時保留轉(zhuǎn)染的DNA。由于穩(wěn)轉(zhuǎn)效率較低,因此選用有效地轉(zhuǎn)染策略和篩選方法很重要。

以上就是有關(guān)于在細胞轉(zhuǎn)染中瞬時轉(zhuǎn)染與穩(wěn)定轉(zhuǎn)染有什么區(qū)別問題解答,如果你有更多補充請咨詢百奧創(chuàng)新客服哦~

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