Type 2 Diabetes Mellitus: Molecular Pathogenesis and Therapeutic Interventions

Area of Science:

• Endocrinology and Metabolism
• Molecular Biology
• Immunology

Background:

• Type 2 diabetes (T2D) is a growing global health issue characterized by insulin resistance and pancreatic beta-cell failure.
• Pathogenesis extends beyond hyperglycemia to include immunometabolic dysregulation, mitochondrial dysfunction, and organelle stress.

Purpose of the Study:

• To synthesize molecular mechanisms of T2D pathogenesis.
• To review contemporary therapeutic advancements for T2D management.
• To connect molecular insights with clinical applications for improved patient outcomes.

Main Methods:

• Systematic review of the immunometabolic axis, including macrophage polarization, exosomes, and nanotube-mediated crosstalk.
• Analysis of mitochondrial dynamics, mitophagy, lipotoxicity (ceramides, diacylglycerols, cholesterol), and proteotoxicity (islet amyloid polypeptide).
• Charting the evolution of T2D therapies from glucocentric to complication-centric strategies.

Main Results:

• Identified immunometabolic axis, mitochondrial dysfunction, and lipotoxicity as core drivers of beta-cell failure in T2D.
• Highlighted SGLT2 inhibitors and GLP-1 receptor agonists for cardio-renal protection.
• Discussed personalized medicine, multiomics, precision therapies, and lifestyle interventions.

Conclusions:

• A comprehensive understanding of T2D pathogenesis is crucial for advancing treatment.
• Modern therapies targeting complications offer significant benefits beyond glucose control.
• Integrating molecular insights with personalized and holistic approaches will improve T2D management and patient outcomes.