Unexpected transcellular protein crossover occurs during canonical DNA transfection.
Unexpected transcellular protein crossover occurs during canonical DNA transfection.
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在规范DNA转染期间发生意外的跨细胞蛋白交叉。
DOI:
10.1002/jcb.24884
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发表时间:
2014-12
影响因子:
4
通讯作者:
Davletov, Bazbek
中科院分区:
文献类型:
--
作者:
Arsenault, Jason;Cuijpers, Sabine A. G.;Niranjan, Dhevahi;Davletov, Bazbek
Transfection of DNA has been invaluable for biological sciences, yet the effects upon membrane homeostasis are far from negligible. Here, we demonstrate that Neuro2A cells transfected using Lipofectamine LTX with the fluorescently coupled Botulinum serotype A holoenzyme (EGFP-LcA) cDNA express this SNAP25 protease that can, once translated, escape the transfected host cytosol and become endocytosed into untransfected cells, without its innate binding and translocation domains. Fluorescent readouts revealed moderate transfection rates (30–50%) while immunoblotting revealed a surprisingly total enzymatic cleavage of SNAP25; the transgenic protein acted beyond the confines of its host cell. Using intracellular dyes, no important cytotoxic effects were observed from reagent treatment alone, which excluded the possibility of membrane ruptures, though noticeably, intracellular acidic organelles were redistributed towards the plasma membrane. This drastic, yet frequently unobserved, change in protein permeability and endosomal trafficking following reagent treatment highlights important concerns for all studies using transient transfection. J. Cell. Biochem. 115: 2047–2054, 2014. © 2014 Wiley Periodicals, Inc.
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