Purification of Soluble Recombinant Human Tau Protein from Bacteria Using Double-tag Affinity Purification

Area of Science:

• Neuroscience
• Molecular Biology
• Biochemistry

Background:

• Microtubule-associated protein Tau (Tau) dysfunction is linked to over 20 neurodegenerative diseases, including Alzheimer's disease.
• Understanding Tau's physiological and disease-related functions is crucial for research and therapeutic development.
• A significant challenge has been the difficulty in obtaining purified, soluble Tau protein for study.

Purpose of the Study:

• To establish a reliable protocol for purifying soluble recombinant Tau protein.
• To enable downstream applications such as immunization and binding assays for Tau research.

Main Methods:

• Utilized a dual affinity tag purification strategy.
• Expressed and purified Tau protein in a bacterial system.
• Ensured the functional activity of the purified Tau protein.

Main Results:

• Successfully purified soluble recombinant Tau protein using the described protocol.
• The purified Tau protein was demonstrated to be functionally active.
• The protocol facilitates key downstream applications for Tau research.

Conclusions:

• The dual affinity tag purification method provides a robust way to obtain soluble, active Tau protein.
• This advancement overcomes a major hurdle in Tau protein research and drug discovery.
• The protocol supports critical experiments investigating Tau's role in neurodegenerative diseases.