Modeling Andersen's Syndrome in Human Induced Pluripotent Stem Cells.
2016
Andersen's syndrome (AS) is a rare disorder characterized by a triad of symptoms: periodic paralysis, cardiac arrhythmia, and bone developmental defects. Most of the patients carry mutations on the inward rectifier potassium channel Kir2.1 encoded by the KCNJ2 gene. kcnj2 knockout mice are lethal at birth preventing, hence, thorough investigations of the physiological and pathophysiological events. We have generated induced pluripotent stem (iPS) cells from healthy as well as from AS patient muscular biopsies using the four-gene cassette required for cellular reprogramming (Oct4, Sox2, Klf4, and c-Myc). The generated AS-iPS cells exhibited the gold standard requirement for iPS cells: expression of genetics and surface pluripotent markers, strong alkaline phosphatase activity, self-renewal, and could be differentiated by the formation of embryoid bodies (EBs) into the three germ layers. Sequencing of the entire coding sequence of the KCNJ2 gene, in AS-iPS cells, revealed that the reprogramming process did ...
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