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Genetically modified pigs have been considered favorable resources in xenotransplantation. Microinjection of randomly integrating transgenes into zygotes, somatic cell nuclear transfer, homologous recombination, zinc finger nucleases, transcription activator-like effector nucleases, and most recently, clustered regularly interspaced short palindromic repeats-cas9 (CRISPR/Cas9) are the techniques that have been used to generate these animals. Here, we provide an overview of the CRISPR approaches that have been used to modify genes which are vital in improving xenograft survival rate, including cytidine monophosphate-N-acetylneuraminic acid hydroxylase, B1,4N-acetylgalactosaminyltransferase, isoglobotrihexosylceramide synthase, class I MHC, von Willebrand factor, C3, and porcine endogenous retroviruses. In addition, we will mention the importance of potential candidate genes which could be targeted using CRISPR/Cas9.

Original publication

DOI

10.3389/fimmu.2018.01711

Type

Journal article

Journal

Front Immunol

Publication Date

2018

Volume

9

Keywords

clustered regularly interspaced short palindromic repeats/Cas9, gene editing, transplantation immunology, xenotransplantation, zinc finger nucleases–transcription activator-like effector nuclease–clustered regularly interspaced short palindromic repeats/Cas, Alleles, Animals, CRISPR-Cas Systems, Gene Editing, Genetic Markers, Heterografts, Humans, Inverted Repeat Sequences