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Clustered regularly interspaced short palindromic repeats/associated protein 9 (CRISPR/Cas9) gene-editing technology shows promise for manipulating single or multiple tumor-associated genes and engineering immune cells to treat cancers. Currently, most gene-editing strategies rely on viral delivery; yet, while being efficient, many limitations, mainly from safety and packaging capacity considerations, hinder the use of viral CRISPR vectors in cancer therapy. In contrast, recent advances in non-viral CRISPR/Cas9 nanoformulations have paved the way for better cancer gene editing, as these nanoformulations can be engineered to improve safety, efficiency, and specificity through optimizing the packaging capacity, pharmacokinetics, and targetability. In this review, the advance in non-viral CRISPR delivery is highlighted, and there is a discussion on how these approaches can be potentially used to treat cancers in addressing the aforementioned limitations, followed by the perspectives in designing a proper CRISPR/Cas9-based cancer nanomedicine system with translational potential.
Yi et al. (Wed,) studied this question.