使用成熟的人诱导多能干细胞来源心肌细胞单层进行高通量心脏毒性筛选

Overview

This protocol enables the maturation of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) to an adult-like phenotype, enhancing their predictive value in cardiotoxicity screening. The method is designed for high throughput, allowing for efficient optical mapping of calcium or voltage changes.

Key Study Components

Area of Science

• Cardiovascular research
• Stem cell biology
• Toxicology

Background

• hiPSC-CMs are a promising alternative to animal models for cardiotoxicity testing.
• The immature phenotype of hiPSC-CMs limits their predictive capabilities.
• Protocols for maturation are essential for advancing their use in research.
• This study presents a method to achieve rapid maturation of hiPSC-CMs.

Purpose of Study

• To develop a protocol for maturing hiPSC-CMs to an adult-like phenotype.
• To improve the predictive value of hiPSC-CMs in cardiotoxicity screening.
• To facilitate high throughput analysis of cardiac function.

Methods Used

• Preparation of maturation-inducing extracellular matrix (MECM) plates.
• Washing MECM plates with Hank's balanced salt solution (HBSS).
• Plating hiPSC-CMs on the prepared MECM plates.
• Optical mapping of calcium or voltage changes in matured hiPSC-CMs.

Main Results

• The protocol successfully matures hiPSC-CMs to an adult-like phenotype.
• Mature hiPSC-CMs demonstrate improved predictive capabilities for cardiotoxicity.
• The method supports high throughput screening for drug testing.
• Optical mapping reveals significant calcium and voltage changes in matured cells.

Conclusions

• This maturation protocol enhances the utility of hiPSC-CMs in cardiotoxicity research.
• High throughput capabilities make it suitable for large-scale studies.
• The findings support the potential of hiPSC-CMs as a reliable model for cardiac studies.

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