A critical role of retinoic acid concentration for the induction of a fully human-like atrial action potential phenotype in hiPSC-CM
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A critical role of retinoic acid concentration for the induction of a fully human-like atrial action potential phenotype in hiPSC-CM. / Schulz, Carl; Sönmez, Muhammed; Krause, Julia; Schwedhelm, Edzard; Bangfen, Pan; Alihodzic, Dzenefa; Hansen, Arne; Eschenhagen, Thomas; Christ, Torsten.
In: STEM CELL REP, Vol. 18, No. 11, 14.11.2023, p. 2096-2107.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - A critical role of retinoic acid concentration for the induction of a fully human-like atrial action potential phenotype in hiPSC-CM
AU - Schulz, Carl
AU - Sönmez, Muhammed
AU - Krause, Julia
AU - Schwedhelm, Edzard
AU - Bangfen, Pan
AU - Alihodzic, Dzenefa
AU - Hansen, Arne
AU - Eschenhagen, Thomas
AU - Christ, Torsten
N1 - Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.
PY - 2023/11/14
Y1 - 2023/11/14
N2 - Retinoic acid (RA) induces an atrial phenotype in human induced pluripotent stem cells (hiPSCs), but expression of atrium-selective currents such as the ultrarapid (IKur) and acetylcholine-stimulated K+ current is variable and less than in the adult human atrium. We suspected methodological issues and systematically investigated the concentration dependency of RA. RA treatment increased IKur concentration dependently from 1.1 ± 0.54 pA/pF (0 RA) to 3.8 ± 1.1, 5.8 ± 2.5, and 12.2 ± 4.3 at 0.01, 0.1, and 1 μM, respectively. Only 1 μM RA induced enough IKur to fully reproduce human atrial action potential (AP) shape and a robust shortening of APs upon carbachol. We found that sterile filtration caused substantial loss of RA. We conclude that 1 μM RA seems to be necessary and sufficient to induce a full atrial AP shape in hiPSC-CM in EHT format. RA concentrations are prone to methodological issues and may profoundly impact the success of atrial differentiation.
AB - Retinoic acid (RA) induces an atrial phenotype in human induced pluripotent stem cells (hiPSCs), but expression of atrium-selective currents such as the ultrarapid (IKur) and acetylcholine-stimulated K+ current is variable and less than in the adult human atrium. We suspected methodological issues and systematically investigated the concentration dependency of RA. RA treatment increased IKur concentration dependently from 1.1 ± 0.54 pA/pF (0 RA) to 3.8 ± 1.1, 5.8 ± 2.5, and 12.2 ± 4.3 at 0.01, 0.1, and 1 μM, respectively. Only 1 μM RA induced enough IKur to fully reproduce human atrial action potential (AP) shape and a robust shortening of APs upon carbachol. We found that sterile filtration caused substantial loss of RA. We conclude that 1 μM RA seems to be necessary and sufficient to induce a full atrial AP shape in hiPSC-CM in EHT format. RA concentrations are prone to methodological issues and may profoundly impact the success of atrial differentiation.
KW - Humans
KW - Action Potentials
KW - Induced Pluripotent Stem Cells/metabolism
KW - Atrial Fibrillation/metabolism
KW - Tretinoin/pharmacology
KW - Heart Atria
KW - Phenotype
KW - Myocytes, Cardiac
U2 - 10.1016/j.stemcr.2023.10.006
DO - 10.1016/j.stemcr.2023.10.006
M3 - SCORING: Journal article
C2 - 37922915
VL - 18
SP - 2096
EP - 2107
JO - STEM CELL REP
JF - STEM CELL REP
SN - 2213-6711
IS - 11
ER -