Navigating the Complexity: A Comprehensive Review of GSK-3 Inhibition in Regenerative Medicine

Area of Science:

• Biochemistry
• Cell Biology
• Pharmacology

Background:

• Glycogen synthase kinase-3 (GSK-3) is a key regulator of cellular signaling pathways.
• GSK-3 plays critical roles in metabolism, proliferation, differentiation, and tissue regeneration.

Purpose of the Study:

• To review the multifaceted effects of pharmacological GSK-3 inhibition.
• To focus on the context-dependent impact of GSK-3 inhibition across various body districts.

Main Methods:

• Literature review of studies on GSK-3 inhibition.
• Analysis of GSK-3 inhibition effects in different cell types and tissues.
• Consideration of factors influencing GSK-3 inhibition outcomes, including dosage, timing, microenvironment, and isoform specificity.

Main Results:

• GSK-3 inhibition promotes embryonic stem cell self-renewal, neuronal differentiation, osteogenesis, and dentinogenesis.
• GSK-3 inhibition inhibits adipogenesis.
• Effects on muscle, heart, liver, and skin are complex and contradictory, influenced by various factors.
• GSK-3 inhibition exhibits a dual role in fibrosis and epithelial-mesenchymal transition.

Conclusions:

• Pharmacological GSK-3 inhibition has promising therapeutic potential in regenerative medicine.
• Clinical translation is limited by contradictory tissue-specific effects and lack of isoform-specific inhibitors.
• Selective targeting and robust preclinical studies are crucial for harnessing GSK-3 modulation's potential.