Visualization of Tau⁻Tubulin Interaction in a Living Cell Using Bifluorescence Complementation Technique.

Area of Science:

• Neuroscience
• Cell Biology
• Biochemistry

Background:

• Tau protein stabilizes microtubules in neurons.
• Hyperphosphorylated tau detaches from microtubules, forming aggregates and causing neurodegeneration.
• Tau aggregation is central to Alzheimer's disease and other neurodegenerative disorders.
• The interaction between tau and tubulin during aggregation is not well understood.

Purpose of the Study:

• To investigate the interaction between tau and tubulin during the tau aggregation process.
• To develop a method for visualizing tau-tubulin interactions in living cells.

Main Methods:

• Generation of a cell model using the Bifluorescence Complementation (BiFC) technique.
• Induction of tau pathology through chemical stimulation.
• Visualization and quantification of tau-tubulin interactions via BiFC fluorescence.

Main Results:

• The tau-tubulin BiFC cell model successfully visualized tau-tubulin interactions in living cells.
• Chemical stimulation induced tau pathology and significantly increased BiFC fluorescence, indicating tau and tubulin co-aggregation.
• These findings demonstrate a direct link between tau aggregation and tubulin.

Conclusions:

• Tubulin plays a crucial role in the tau aggregation process.
• The developed BiFC cell model is a valuable tool for studying tau pathology.
• Understanding tau-tubulin interactions may offer new therapeutic targets for neurodegenerative diseases.