Tau Isoforms: Gaining Insight into MAPT Alternative Splicing

Area of Science:

• Neuroscience
• Molecular Biology
• Genetics

Background:

• Tau proteins, encoded by the MAPT gene, are vital for neuronal function, including axonal transport and synaptic plasticity.
• Dysregulation and aggregation of Tau isoforms are hallmarks of neurodegenerative tauopathies such as Alzheimer's disease.

Purpose of the Study:

• To review recent advancements in understanding Tau isoform expression and its regulatory mechanisms.
• To highlight experimental models and the role of cis-elements and ribonucleoproteins in Tau splicing.

Main Methods:

• Literature review of recent contributions to Tau splicing research.
• Analysis of experimental models for studying Tau expression.
• Examination of regulatory elements (cis-elements, ribonucleoproteins) involved in alternative splicing.

Main Results:

• Tau splicing generates six major isoforms with differential expression during neuronal development.
• Complex regulatory mechanisms involving cis-elements and ribonucleoproteins control Tau alternative splicing.
• Alterations in Tau splicing are linked to the pathogenesis of major tauopathies.

Conclusions:

• Understanding Tau splicing regulation is key to deciphering neurodegenerative disease mechanisms.
• Targeting Tau splicing pathways presents a promising avenue for developing RNA-based therapeutic strategies for tauopathies.