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Hereditas(Beijing) ›› 2023, Vol. 45 ›› Issue (1): 78-87.doi: 10.16288/j.yczz.22-354

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Generation of genetically modified rat models via the CRISPR/Cas9 technology

Meizhen Liu(), Liren Wang(), Yongmei Li, Xueyun Ma, Honghui Han, Dali Li()   

  1. School of Life Sciences, East China Normal University, Shanghai 200241, China
  • Received:2022-11-10 Revised:2022-12-23 Online:2023-01-20 Published:2023-01-01
  • Contact: Li Dali E-mail:mzliu@bio.ecnu.edu.cn;lrwang@bio.ecnu.edu.cn;dlli@bio.ecnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(32025023);Supported by the National Natural Science Foundation of China(81873685);Supported by the National Natural Science Foundation of China(31971366);the National Key Research and Development Program of China(2019YFA0110802);the National Key Research and Development Program of China(2019YFA0802802);the National Key Research and Development Program of China(2019YFA0802802);the Shanghai Municipal Commission for Science and Technology(20140900200);the Animal Center of East China Normal University(011)

Abstract:

The RNA-guided CRISPR/Cas9 genomic editing system consists of a single guide RNA (sgRNA) and a Cas9 nuclease. The two components form a complex in cells and target the genomic loci complementary to the sgRNA. The Cas9 nuclease cleaves the target site creating a double stranded DNA break (DSB). In mammalian cells, DSBs are often repaired via error prone non-homologous end joining (NHEJ) or via homology directed repair (HDR) with the presence of donor DNA templates. Micro-injection of the CRISPR/Cas9 system into the rat embryos enables generation of genetically modified rat models. Here, we describe a detailed protocol for creating gene knockout or knockin rat models via the CRISPR/Cas9 technology.

Key words: rat, CRISPR/Cas9, genome editing, gene knockout