CRISPR/Cas9-mediated generation of a homozygous CRB2 knockout H1 human embryonic stem cell line.

Mutations in the Crumbs homolog 2 (CRB2) gene cause various autosomal recessive genetic diseases, such as leber congenital amaurosis, retinitis pigmentosa and ventriculomegaly with cystic kidney disease. However, the precise roles of CRB2 in cell fate determination remains unknown. Here, we generated a homozygous CRB2 knockout (CRB2-/-) H1 human embryonic stem cells (hESCs) using CRISPR/Cas9 system. This cell line maintained a normal morphology and karyotype, and expressed the pluripotency makers. Importantly, the cell line has the ability to differentiate into three germ layers. The CRB2-/- hESCs provide valuable resources for studying the mechanisms of genetic diseases caused by CRB2 mutations.