Stem Cell Research (Feb 2025)

Generation of a BEST1 Pr-EGFP reporter human embryonic stem cell line via CRISPR/Cas9 editing

  • Shuaiyan Lu,
  • Ming Chen,
  • Xiaoyu Liu,
  • Jiahang Li,
  • Hui Liu,
  • Shasha Li

Journal volume & issue
Vol. 82
p. 103625

Abstract

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The retinal pigment epithelium (RPE) cell, located between the neural retina and choriocapillaris, is vital for retinal maintenance and photoreceptor function. Human embryonic stem cells (hESCs) provide a limitless source of RPE cells for transplantation. Using CRISPR/Cas9, we inserted a fusion of the BEST1 promoter (an RPE-specific marker) and the EGFP gene into the AAVS1 locus to track differentiation in hESC-induced RPE (hESC-iRPE). The resulting gene-edited line, WAe009-A-2 M, maintained a normal karyotype, expressed pluripotency markers, and demonstrated differentiation potential, making it invaluable for RPE development and therapeutic research.