Enhancing the engraftment of human induced pluripotent stem cell-derived cardiomyocytes via a transient inhibition of rho kinase activity

Academic Article


  • A crucial factor in improving cellular therapy effectiveness for myocardial regeneration is to safely and efficiently increase the cell engraftment rate. Y-27632 is a highly potent inhibitor of Rho-associated, coiled-coil-containing protein kinase (RhoA/ROCK) and is used to prevent dissociation-induced cell apoptosis (anoikis). We demonstrate that Y-27632 pretreatment for human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs+RI) prior to implantation results in a cell engraftment rate improvement in a mouse model of acute myocardial infarction (MI). Here, we describe a complete procedure of hiPSC-CMs differentiation, purification, and cell pretreatment with Y-27632, as well as the resulting cell contraction, calcium transient measurements, and transplantation into mouse MI models. The proposed method provides a simple, safe, effective, and low-cost method which significantly increases the cell engraftment rate. This method cannot only be used in conjunction with other methods to further enhance the cell transplantation efficiency but also provides a favorable basis for the study of the mechanisms of other cardiac diseases.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Zhao M; Tang Y; Ernst PJ; Kahn-Krell A; Fan C; Pretorius D; Zhu H; Lou X; Zhou L; Zhang J
  • Volume

  • 2019
  • Issue

  • 149