ArticleBiomolecules2025
Improving the Efficiency of CRISPR/Cas9-Mediated Non-Homologous End Joining Gene Knockout Using Small Molecules in Porcine Cells.
Article in Biomolecules, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Targeted Nanoparticle Delivery CRISPR/Cas9: overcoming biological barriers, enhancing stability, and improving therapeutic precision.International journal of pharmaceutics: X · 2026Review
- CRISPR Gene Tagging for Illuminating Endogenous Protein Dynamics.International journal of molecular sciences · 2026Review
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Authors and funding
9 authors.
Funding
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Abstract
The CRISPR/Cas9 genome editing system has emerged as an effective platform to generate loss-of-function gene edits through non-homologous end joining (NHEJ) without a repair template. To verify whether small molecules can enhance the efficiency of CRISPR/ Cas9-mediated NHEJ gene editing in porcine cells, this experiment investigated the effects of six small-molecule compounds, namely Repsox, Zidovudine, IOX1, GSK-J4, YU238259, and GW843682X, on the efficiency of CRISPR/Cas9-mediated NHEJ gene editing. The results showed the optimal concentrations of the small molecules, including Repsox, Zidovudine, IOX1, GSK-J4, YU238259, and GW843682X, for in vitro-cultured PK15 viability. Compared with the control group, the single small molecules Repsox, Zidovudine, GSK-J4, and IOX1 increased the efficiency of NHEJ-mediated gene editing 3.16-fold, 1.17-fold, 1.16-fold, and 1.120-fold, respectively, in the Cas9-sgRNA RNP delivery system. There were no benefits when using YU238259 and GW843682X compared with the control group. In the CRISPR/Cas9 plasmid delivery system, the Repsox, Zidovudine, IOX1, and GSK-J4 treatments increased the efficiency of NHEJ-mediated gene editing 1.47-fold, 1.15-fold, 1.21-fold, and 1.23-fold, respectively, compared with the control group. Repsox can also improve the efficiency of NHEJ-mediated multi-gene editing based on a CRISPR sgRNA-tRNA array. We also explored the mechanism of Repsox's effect on the efficiency of NHEJ-mediated gene editing. The results showed that Repsox reduces the expression levels of SMAD2, SMAD3, and SMAD4 in the TGF-β pathway, indicating that Repsox can increase the efficiency of CRISPR NHEJ-mediated gene editing in porcine cells through the TGF-β pathway.
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