Human Induced Pluripotent Stem Cell-derived Cardiomyocytes to Study Inflammation-induced Aberrant Calcium Transient

Overview

Journal Elife

Specialty Biology

Date 2024 Sep 27

PMID 39331464

Authors

Yuki Tatekoshi

Chunlei Chen

Jason Solomon Shapiro

Hsiang-Chun Chang

Malorie Blancard

Davi M Lyra-Leite

Paul W Burridge

Matthew Feinstein

Richard DAquila

Priscilla Hsue

Hossein Ardehali

Affiliations

Soon will be listed here.

Abstract

Heart failure with preserved ejection fraction (HFpEF) is commonly found in persons living with HIV (PLWH) even when antiretroviral therapy suppresses HIV viremia. However, studying this condition has been challenging because an appropriate animal model is not available. In this article, we studied calcium transient in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) in culture to simulate the cardiomyocyte relaxation defect noted in PLWH and HFpEF and assess whether various drugs have an effect. We show that treatment of hiPSC-CMs with inflammatory cytokines (such as interferon-γ or TNF-α) impairs their Ca uptake into sarcoplasmic reticulum and that SGLT2 inhibitors, clinically proven as effective for HFpEF, reverse this effect. Additionally, treatment with mitochondrial antioxidants (like mito-Tempo) and certain antiretrovirals resulted in the reversal of the effects of these cytokines on calcium transient. Finally, incubation of hiPSC-CMs with serum from HIV patients with and without diastolic dysfunction did not alter their Ca-decay time, indicating that the exposure to the serum of these patients is not sufficient to induce the decrease in Ca uptake in vitro. Together, our results indicate that hiPSC-CMs can be used as a model to study molecular mechanisms of inflammation-mediated abnormal cardiomyocyte relaxation and screen for potential new interventions.

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