Immunodetection of serotonin transporter from mouse brain

Area of Science:

• Neuroscience
• Molecular Biology
• Genetics

Background:

• The serotonin transporter (5-HTT) plays a crucial role in regulating serotonergic neurotransmission.
• Understanding the distribution and characteristics of 5-HTT in the brain is essential for neuroscience research.

Purpose of the Study:

• To isolate and sequence the mouse serotonin transporter (5-HTT) gene.
• To develop antibodies for detecting the 5-HTT protein.
• To determine the molecular weight and distribution of 5-HTT in the mouse brain.

Main Methods:

• DNA sequencing of a mouse serotonin transporter gene fragment.
• Heminested reverse transcription-polymerase chain reaction (RT-PCR) assays for distribution analysis.
• Western blot analysis using antibodies against the N-terminal region of 5-HTT.

Main Results:

• A DNA fragment encoding the N-terminal region of mouse 5-HTT was successfully isolated and sequenced.
• Heminested RT-PCR assays indicated widespread distribution of 5-HTT mRNA throughout the mouse brain.
• Western blot analysis identified the 5-HTT protein as a 71 kDa polypeptide in mouse brain membranes.

Conclusions:

• The study successfully identified and characterized the mouse serotonin transporter.
• The findings confirm the broad expression of 5-HTT in the mouse brain, suggesting its significant role in various neural functions.
• The developed antibodies provide a valuable tool for future research on serotonin transporter function and regulation.