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| Status |
Public on Dec 01, 2021 |
| Title |
miRNA-seq in healthy human iPSC-derived cardiomyocytes |
| Organism |
Homo sapiens |
| Experiment type |
Non-coding RNA profiling by high throughput sequencing
|
| Summary |
Abnormalities of ventricular action potential (AP) cause malignant cardiac arrhythmias and sudden cardiac death. Here, we sought to identify microRNAs (miRNAs) that regulate the human cardiac AP and asked whether their manipulation allows for therapeutic modulation of AP abnormalities. Quantitative analysis of the miRNA targetomes in human cardiac myocytes identified miR-365 as a primary miRNA to regulate repolarizing ion channels. AP recordings in patient-specific induced pluripotent stem cell-derived cardiac myocytes (iPSC-CMs) showed that elevation of miR-365 level significantly prolonged AP duration in hiPSC-CMs derived from a Short-QT syndrome (SQTS) patient, whereas specific inhibition of miR-365 normalized pathologically prolonged AP in Long-QT syndrome (LQTS) iPSC-CMs. Transcriptome analyses in human iPSC-CMs at bulk and single-cell level corroborated the key cardiac repolarizing channels as direct targets of miR-365, together with functionally synergistic regulation of additional AP-regulating genes by this miRNA. Whole-cell patch clamp experiments revealed miR-365-based regulation of repolarizing ionic currents. Finally, refractory period measurements in human myocardial slices substantiated the prolonging effect of miR-365 on AP duration also in adult human myocardial tissue. Our results delineate miR-365 to regulate human cardiac AP duration by targeting key factors of cardiac repolarization.
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| |
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| Overall design |
small RNA-seq of 2 healthy hiPSC-CMs at day 60
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| |
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| Contributor(s) |
Esfandyari D, Engelhardt S |
| Citation(s) |
35017523 |
| |
| Submission date |
Oct 11, 2021 |
| Last update date |
Jan 28, 2022 |
| Contact name |
Dena Esfandyari |
| E-mail(s) |
dena.esfandyari@tum.de, dena.esf@gmail.com
|
| Phone |
08941403286
|
| Organization name |
Technical University of Munich
|
| Department |
Institute of Pharmacology and Toxicology
|
| Street address |
Haus 607, Biedersteiner Str. 29, IPT
|
| City |
Munich |
| State/province |
Bavaria |
| ZIP/Postal code |
80802 |
| Country |
Germany |
| |
|
| Platforms (1) |
| GPL20301 |
Illumina HiSeq 4000 (Homo sapiens) |
|
| Samples (2) |
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| This SubSeries is part of SuperSeries: |
| GSE185690 |
The regulatory role of miR-365 in human iPSC-derived cardiac myocytes |
|
| Relations |
| BioProject |
PRJNA770439 |
| SRA |
SRP340888 |
