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Knockout (KO) or exogenous expression of a gene of interest in cultured cells is one of the most important ways to study the function of the gene. Compared with transient transfection, stable cell lines possess great advantages such as excellent cell homogeneity and feasibility for long-term use. However, technical challenges in generating stable cell lines still exist in many laboratories using conventional techniques like limiting dilution or cloning cylinders. In this study we describe an optimized method to efficiently create stable cell lines for functional studies. This method was successfully used to generate a PIEZO1 gene-KO cell line with the CRISPR/Cas9 technology, and TRPC5/GCaMP6f-mCherry-coexpressing cell lines without antibiotic selection. Monoclonal cell lines can be obtained in 2-4 weeks after transfection. This method does not require any special equipment or consumables and can be conducted in all laboratories with general cell-culture facility.


Jieyu Liu, Yan Ge, Na Wang, Jing Wen, Wei Wang, Bo Zeng, Gui-Lan Chen. A Simple and Efficient Method to Generate Gene-Knockout and Transgenic Cell Lines. DNA and cell biology. 2021 Feb;40(2):239-246

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PMID: 33395371

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