Establishment of iPSC line from a Chinese infant (XACHi012-A) with Jervell and Lange-Nielsen syndrome carrying combined KCNQ1 frameshift c.431delC(p.I145Sfs*92) and nonsense c.1175G > A (p.W392X) variants and two iPSC lines from the parents (XACHi013-A, XACHi014-A).
Zhou Y., Wang J., Li H., Li A., Wang G., Tan X., Lei M., Zhang Y.
Induced pluripotent stem cell lines (iPSCs) were generated from peripheral blood mononuclear cells (PBMCs) isolated from the peripheral blood of a two month-old boy and the parents. Jervell and Lange-Nielsen syndrome (JLNS) was diagnosed in the boy carrying combined KCNQ1 frameshift c.431delC (p.I145Sfs*92) and nonsense c.1175G > A(p.W392X) variants inherited from his mother and father respectively. PBMCs were reprogrammed using non-integrative Sendai viral vectors containing reprogramming factors OCT4, SOX2, KLF4 and C-MYC. IPSCs were shown to express pluripotent markers, have trilineage differentiation potential, carrying identified KCNQ1 variants with corresponding PBMC, and have a normal karyotype. Thus we established three iPSC lines as useful tools for studying the pathophysiological mechanism of JLNS and drug testing.