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Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Rep 2015 ; 10 (11): 1828-35 Nephropedia Template TP
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Targeted Germline Modifications in Rats using CRISPR/Cas9 and Spermatogonial Stem Cells #MMPMID25772367
Chapman KM; Medrano GA; Jaichander P; Chaudhary J; Waits AE; Nobrega MA; Hotaling JM; Ober C; Hamra FK
Cell Rep 2015[Mar]; 10 (11): 1828-35 PMID25772367show ga
Organisms with targeted genomic modifications are efficiently produced by gene editing in embryos using CRISPR/Cas9 RNA-guided DNA endonuclease. Here, to facilitate germline editing in rats, we used CRISPR/Cas9 to catalyze targeted genomic mutations in rat spermatogonial stem cell cultures. CRISPR/Cas9-modified spermatogonia regenerated spermatogenesis and displayed long-term sperm forming potential following transplantation into rat testes. Targeted germline mutations in Epsti1 and Erbb3 were vertically transmitted from recipients to exclusively generate ?pure?, non-mosaic mutant progeny. Epsti1 mutant rats were produced with or without genetically selecting donor spermatogonia. Monoclonal enrichment of Erbb3-null germlines unmasked recessive spermatogenesis defects in culture that were buffered in recipients, yielding mutant progeny isogenic at targeted alleles. Thus, spermatogonial gene editing with CRISPR/Cas9 provided a platform to generate targeted germline mutations in rats, and to study spermatogenesis.