Integrated transcriptomic and proteomic analysis reveals potential targets for heart regeneration

Area of Science:

• Cardiovascular Biology
• Regenerative Medicine
• Molecular Biology

Background:

• Neonatal heart regeneration offers potential therapeutic strategies for myocardial infarction (MI).
• The underlying molecular mechanisms governing cardiac regeneration remain incompletely understood.
• Understanding these mechanisms is crucial for developing effective treatments for heart damage.

Purpose of the Study:

• To investigate the molecular landscape of neonatal mouse heart regeneration.
• To identify key genes and pathways involved in cardiac repair.
• To uncover potential therapeutic targets for MI treatment.

Main Methods:

• Construction of a neonatal mouse model for heart regeneration studies.
• Integrated transcriptomic and proteomic analyses to identify differentially expressed genes (DEGs) and proteins (DEPs).
• Bioinformatic analyses including Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Enrichment Analysis (GSEA).
• Validation of hub gene expression using Western blot (WB) and quantitative polymerase chain reaction (qPCR).

Main Results:

• Identified 3186 DEGs and 42 DEPs, revealing discrepancies between mRNA and protein expression levels.
• Functional analysis implicated ubiquitination, cell cycle, and oxygen metabolism in cardiac regeneration.
• Discovered 19 hub genes, with Ankrd1, Gpx3, and Trim72 identified as significant regulators.

Conclusions:

• Integrated transcriptomic and proteomic analyses provide a comprehensive molecular characterization of neonatal heart regeneration.
• Ankrd1, Gpx3, and Trim72 are identified as promising therapeutic targets for promoting cardiac regeneration and treating MI.
• Further research into these identified genes could lead to novel regenerative therapies for heart disease.