Tau Protein: Structure, Pathology, and Neurodegeneration

Tau protein is a highly soluble microtubule-associated protein (MAP) predominantly expressed in neurons. Under physiological conditions, tau regulates microtubule assembly, stabilization, and cytoskeletal organization—essential processes for maintaining neuronal morphology and facilitating intracellular transport.

Pathogenic Mechanisms of Tau Aggregation

The formation and accumulation of NFTs represent a central pathogenic process. This deposition contributes to neuronal dysfunction through three primary mechanisms:

Isoform Diversity & Therapeutic Outlook

Tau Isoform Diversity

The human tau gene undergoes alternative splicing, resulting in six distinct isoforms. These differ in microtubule-binding domains, influencing their susceptibility to pathological modification.

Therapeutic Targets

Current research focuses on three major disease-modifying interventions:

• • Tau Phosphorylation Inhibitors: Preventing pathological modification.
• • Anti-tau Monoclonal Antibodies: Neutralizing extracellular aggregates.
• • Aggregation Inhibitors: Directly targeting fibril formation.