Benzyl isothiocyanate induces heart regeneration

Area of Science:

• Cardiovascular Biology
• Regenerative Medicine
• Pharmacology

Background:

• Mammalian cardiomyocytes cease cell division after birth, preventing heart regeneration in adult mammals.
• Heart injury often leads to permanent damage due to the limited regenerative capacity of cardiac tissue.
• Developing strategies for pharmacological induction of cardiomyocyte proliferation is crucial for heart repair.

Purpose of the Study:

• To investigate the potential of benzyl isothiocyanate (BITC) to induce cardiomyocyte proliferation and cardiac regeneration.
• To explore the underlying molecular mechanisms, specifically the involvement of the mitogen-activated protein kinase (MAPK) pathway.
• To assess the efficacy of BITC in promoting heart regeneration in both neonatal and adult mammalian models.

Main Methods:

• Treatment of neonatal and adult mice with benzyl isothiocyanate (BITC).
• Induction of myocardial infarction in animal models.
• Administration of mild hypoxia (10% O2) in conjunction with BITC in adult mice.
• Analysis of cardiomyocyte cell cycle reentry and tissue regeneration markers.

Main Results:

• BITC treatment stimulated cardiomyocyte proliferation via activation of the MAPK pathway.
• BITC facilitated heart regeneration in infarcted neonatal mouse hearts, extending beyond the typical regeneration window.
• Combined administration of BITC and mild hypoxia induced cell cycle reentry and significant tissue regeneration in the adult mouse heart.
• BITC demonstrated efficacy in promoting cardiac repair in adult mammals.

Conclusions:

• Pharmacological activation of the MAPK pathway with BITC can induce cardiomyocyte proliferation and cardiac regeneration.
• Combining BITC with hypoxia-activated signaling pathways presents a promising therapeutic strategy for inducing cardiac regeneration in heart disease patients.
• This approach holds potential for treating heart conditions characterized by loss of functional myocardium.