This article describes a method for analyzing phosphorylated tau proteins in mouse brain tissue, which is crucial for understanding neurodegenerative diseases. The process involves homogenizing tissue, separating proteins via SDS-PAGE, and detecting specific proteins using antibodies.
Start with a mouse brain tissue in an extraction buffer containing protease inhibitors and a detergent.
Homogenize the tissue to release proteins into the buffer. The protease inhibitors block protease activity, preventing protein degradation.
Centrifuge and collect the supernatant with proteins.
Add a loading buffer containing detergent and a reducing agent to denature the protein.
Load the proteins from the control and sample onto an SDS-PAGE gel. Apply an electric field to separate proteins into distinct bands.
After electrophoresis, transfer protein bands onto a membrane.
Treat the membrane with a buffer containing fat-free milk to block non-specific interaction sites.
Incubate with primary antibodies that bind specifically to phosphorylated tau proteins.
Wash and Incubate with enzyme-conjugated secondary antibodies.
Add a substrate that reacts with the enzyme to produce a light signal, confirming the phosphorylated tau proteins.
An intense luminous band in the sample compared to the control suggests neurodegenerative pathology.
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