PMID- 25967873 OWN - NLM STAT- MEDLINE DCOM- 20160208 LR - 20190212 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 35 IP - 6 DP - 2015 TI - Effects of synthetic neural adhesion molecule mimetic peptides and related proteins on the cardiomyogenic differentiation of mouse embryonic stem cells. PG - 2437-50 LID - 10.1159/000374044 [doi] AB - BACKGROUND/AIMS: Pluripotent stem cells differentiating into cardiomyocyte-like cells in an appropriate cellular environment have attracted significant attention, given the potential use of such cells for regenerative medicine. However, the precise mechanisms of lineage specification of pluripotent stem cells are still largely to be explored. Identifying the role of various small synthetic peptides involved in cardiomyogenesis may provide new insights into pathways promoting cardiomyogenesis. METHODS: In the present study, using a transgenic murine embryonic stem (ES) cell lineage expressing enhanced green fluorescent protein (EGFP) under the control of alpha-myosin heavy chain (alpha-MHC) promoter (palphaMHC-EGFP), we investigated the cardiomyogenic effects of 7 synthetic peptides (Betrofin3, FGLs, FGL(L), hNgf_C2, EnkaminE, Plannexin and C3) on cardiac differentiation. The expression of several cardiac-specific markers was determined by RT-PCR whereas the structural and functional properties of derived cardiomyocytes were examined by immunofluorescence and electrophysiology, respectively. RESULTS: The results revealed that Betrofin3, an agonist of brain derived neurotrophic factor (BDNF) peptide exerted the most striking pro-cardiomyogenic effect on ES cells. We found that BDNF receptor, TrkB expression was up-regulated during differentiation. Treatment of differentiating cells with Betrofin3 between days 3 and 5 enhanced the expression of cardiac-specific markers and improved cardiomyocyte differentiation and functionality as revealed by genes regulation, flow cytometry and patch clamp analysis. Thus Betrofin3 may exert its cardiomyogenic effects on ES cells via TrkB receptor. CONCLUSION: Taken together, the results suggest that Betrofin3 modulates BDNF signaling with positive cardiomyogenic effect in stage and dose-dependent manner providing an effective strategy to increase ES cell-based generation of cardiomyocytes and offer a novel therapeutic approach to cardiac pathologies where BDNF levels are impaired. CI - (c) 2015 S. Karger AG, Basel. FAU - Xu, Ruodan AU - Xu R AD - ENKAM Pharmaceuticals A/S, Copenhagen, Denmark. FAU - Srinivasan, Sureshkumar Perumal AU - Srinivasan SP FAU - Sureshkumar, Poornima AU - Sureshkumar P FAU - Nembo, Erastus Nembu AU - Nembo EN FAU - Schafer, Christoph AU - Schafer C FAU - Semmler, Judith AU - Semmler J FAU - Matzkies, Matthias AU - Matzkies M FAU - Albrechtsen, Morten AU - Albrechtsen M FAU - Hescheler, Jurgen AU - Hescheler J FAU - Nguemo, Filomain AU - Nguemo F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150424 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (Betrofin 3) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Dendrimers) RN - 0 (Myh6 protein, mouse) RN - 0 (Neural Cell Adhesion Molecules) RN - 0 (Oligopeptides) RN - 0 (Peptides) RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 3.6.4.1 (Myosin Heavy Chains) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Differentiation/*drug effects MH - Cell Line MH - Dendrimers/metabolism MH - Gene Expression Regulation/drug effects MH - Green Fluorescent Proteins/metabolism MH - Mice MH - Mouse Embryonic Stem Cells/*drug effects/metabolism MH - Myocytes, Cardiac/*drug effects/metabolism MH - Myosin Heavy Chains/metabolism MH - Neural Cell Adhesion Molecules/*pharmacology MH - Oligopeptides/metabolism MH - Peptides/*metabolism MH - Promoter Regions, Genetic/drug effects MH - Receptor, trkB/metabolism MH - Signal Transduction/drug effects EDAT- 2015/05/15 06:00 MHDA- 2016/02/09 06:00 CRDT- 2015/05/14 06:00 PHST- 2015/03/13 00:00 [accepted] PHST- 2015/05/14 06:00 [entrez] PHST- 2015/05/15 06:00 [pubmed] PHST- 2016/02/09 06:00 [medline] AID - 000374044 [pii] AID - 10.1159/000374044 [doi] PST - ppublish SO - Cell Physiol Biochem. 2015;35(6):2437-50. doi: 10.1159/000374044. Epub 2015 Apr 24.