Optical Recording of Action Potentials in Human Induced Pluripotent Stem Cell-Derived Cardiac Single Cells and Monolayers Generated from Long QT Syndrome Type 1 Patients
Joint Authors
Takaki, Tadashi
Inagaki, Azusa
Chonabayashi, Kazuhisa
Inoue, Keiji
Miki, Kenji
Ohno, Seiko
Makiyama, Takeru
Horie, Minoru
Yoshida, Yoshinori
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-06
Country of Publication
Egypt
No. of Pages
12
Abstract EN
Induced pluripotent stem cells (iPSCs) from type 1 long QT (LQT1) patients can differentiate into cardiomyocytes (CMs) including ventricular cells to recapitulate the disease phenotype.
Although optical recordings using membrane potential dyes to monitor action potentials (APs) were reported, no study has investigated the disease phenotypes of cardiac channelopathy in association with the cardiac subtype at the single-cell level.
We induced iPSC-CMs from three control and three LQT1 patients.
Single-cell analysis using a fast-responding dye confirmed that ventricular cells were the dominant subtype (control-iPSC-CMs: 98%, 88%, 91%; LQT1-iPSC-CMs: 95%, 79%, 92%).
In addition, LQT1-iPSC-ventricular cells displayed an increased frequency of early afterdepolarizations (pvalue=0.031).
Cardiomyocyte monolayers constituted mostly of ventricular cells derived from LQT1-iPSCs showed prolonged AP duration (APD) (pvalue=0.000096).
High-throughput assays using cardiomyocyte monolayers in 96-well plates demonstrated that IKr inhibitors prolonged APDs in both control- and LQT1-iPSC-CM monolayers.
We confirmed that the optical recordings of APs in single cells and monolayers derived from control- and LQT1-iPSC-CMs can be used to assess arrhythmogenicity, supporting the feasibility of membrane potential dye-based high-throughput screening to study ventricular arrhythmias caused by genetic channelopathy or cardiotoxic drugs.
American Psychological Association (APA)
Takaki, Tadashi& Inagaki, Azusa& Chonabayashi, Kazuhisa& Inoue, Keiji& Miki, Kenji& Ohno, Seiko…[et al.]. 2019. Optical Recording of Action Potentials in Human Induced Pluripotent Stem Cell-Derived Cardiac Single Cells and Monolayers Generated from Long QT Syndrome Type 1 Patients. Stem Cells International،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1209559
Modern Language Association (MLA)
Takaki, Tadashi…[et al.]. Optical Recording of Action Potentials in Human Induced Pluripotent Stem Cell-Derived Cardiac Single Cells and Monolayers Generated from Long QT Syndrome Type 1 Patients. Stem Cells International No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1209559
American Medical Association (AMA)
Takaki, Tadashi& Inagaki, Azusa& Chonabayashi, Kazuhisa& Inoue, Keiji& Miki, Kenji& Ohno, Seiko…[et al.]. Optical Recording of Action Potentials in Human Induced Pluripotent Stem Cell-Derived Cardiac Single Cells and Monolayers Generated from Long QT Syndrome Type 1 Patients. Stem Cells International. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1209559
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1209559