Gene Modulation with CRISPR-based Tools in Human iPSC-Cardiomyocytes.

Area of Science:

• Genomics and Molecular Biology
• Cardiovascular Research
• Stem Cell Biology

Background:

• Functional genomics relies on precise gene expression control (knock-out, knock-in, knockdown, overexpression).
• Patient-specific induced pluripotent stem cells (iPSCs) are crucial for human disease modeling and therapeutics.
• Scalable gene modulation tools include pharmacological agents, RNA interference (shRNA/siRNA), and CRISPR/Cas9.

Purpose of the Study:

• To review the development and application of CRISPR interference/activation (CRISPRi/a) systems.
• To highlight their deployment in cardiovascular research using iPSC-derived cells.
• To discuss challenges and future translation of these functional genomics techniques.

Main Methods:

• Utilizing CRISPR/Cas9 gene editing for targeted genetic modification.
• Employing catalytically dead Cas9 (dCas9) fused to transcriptional effectors for CRISPRi/a.
• Leveraging guide RNA (gRNA) libraries for scalable functional genomics screens.

Main Results:

• CRISPRi/a offers precise, time-resolved gene modulation beyond standard genome editing.
• These systems are scalable and versatile for functional genomics studies.
• Successful application in cardiovascular research, particularly with iPSC-cardiomyocytes.

Conclusions:

• CRISPRi/a represents a significant advancement in functional genomics for cardiovascular research.
• Patient-specific iPSC models combined with CRISPRi/a accelerate disease understanding and therapeutic strategies.
• Further translation of these techniques is essential for clinical applications.