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Pubmed ID :28509990
Publication Date : //

Transient Activation of Reprogramming Transcription Factors Using Protein Transduction Facilitates Conversion of Human Fibroblasts Toward Cardiomyocyte-Like Cells.


Derivation of cardiomyocytes directly from patients' own fibroblasts could offer a new therapeutic approach for those with ischemic heart disease. An essential step toward clinical application is to establish safe conversion of human fibroblasts into a cardiac fate. Here we aimed to efficiently and safely generate cardiomyocytes from human fibroblasts by direct delivery of reprogramming recombinant cell permeant form of reprogramming proteins followed by cardio-inductive signals. Human fetal and adult fibroblasts were transiently exposed to transactivator of transcription-fused recombinant OCT4, SOX2, KLF4 and c-MYC for 2 weeks and then were directly differentiated toward protein-induced cardiomyocyte-like cells (p-iCLCs) in a cardiac fate niche, carried out by treatment with a set of cardiogenic small molecules (sequential treatment of Chir, and IWP-2, SB431542 and purmorphamine). The cells showed cardiac phenotype over a period of 3 weeks without first undergoing reprogramming into or through a pluripotent intermediate, shown by lack of expression of key pluripotency markers. p-iCLCs exhibited cardiac features at both the gene and protein levels. Our study provides an alternative method for the generation of p-iCLCs which shortcut reprogramming toward allogeneic cardiomyocytes in a safe and efficient manner and could facilitate generation of genetic material-free cardiomyocytes.

Authors : Ghazizadeh Zaniar , Rassouli Hassan , Fonoudi Hananeh , Alikhani Mehdi , Talkhabi Mahmood , Darbandi-Azar Amir , Chen Shuibing , Baharvand Hossein , Aghdami Nasser , Salekdeh Ghasem Hosseini ,

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