ArticleJournal, genetic engineering & biotechnology2026
PIP3 antagonist as a molecular regulator in MSC-derived cardiomyocytes: Potential in vitro therapeutic implications for conotruncal heart defects.
Article in Journal, genetic engineering & biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Conotruncal heart defects (CTDs) account for approximately one-third of all congenital heart defects. Elevated levels of phosphatidylinositol (3,4,5)-trisphosphate (PIP3) may contribute to CTD pathogenesis. PIP3 plays a pivotal role in mechanotransduction-based biological processes and remodeling of cardiac cytoskeletal proteins. Here, we aimed to evaluate the efficacy of the 322PESB derivative compound as a molecular regulator that antagonizes PIP3 binding pleckstrin homology (PH) domain of the Akt protein using mesenchymal stem cell-derived cardiomyocyte. Human adipose-derived MSCs (Ad-MSCs) were isolated. Immunophenotypic features of the hAd-MSCs were characterized according to minimal criteria of the international society for cellular therapy (ISCT) including immunophenotyping and trilineage differentiation potential. Subsequently, the differentiated hAd-MSCs were cultured in cardiomyogenesis-inducing medium. Successfully differentiated cardiomyocytes were assessed by measuring the expression levels of cardiomyocyte-specific genes using RT-qPCR. PIP3-primed cardiomyocytes were treated with 10 and 30 μmol/L of a 322PESB derivative molecule. The results showed a typical MSCs with high expression levels of CD73 (77.55%), CD90 (87.59%) and CD105 (91.88%) and that was accompanied by low expression levels of CD34 (0.59%) and CD45 (1.78%). After 21 days of MSC culture, cardiomyocyte-like cells with prominent striations were observed. Subsequent confirmation by RT-qPCR quantification of ADRB1 and MLC2a expression levels showed an average increase of 2.9-fold and 2.1-fold, respectively, in induced cardiomyocytes. Compared with the untreated control, PIP3 ELISA assay showed a significant increase in PIP3 levels in PIP3(10 nmol/L)-primed cardiomyocytes treated with 10 and 30 μmol/L of the 322PESB molecule derivative by 485.804 and 3564.164 ng/mL, respectively. In this study, we conducted the first promising molecular regulator with potential therapeutic implications for CTD patients. Further functional animal model and clinical phase studies are recommended.
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