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Transcripts encoding a neural membrane CD26 peptidase-like protein are stimulated by synaptic activity
L de Lecea1, E Soriano, J R Criado
1Department of Molecular Biology, Scripps Research Institute, La Jolla, CA 92037.
Brain Research. Molecular Brain Research
|September 1, 1994
Summary
Researchers identified BSPL, a brain-specific protein. Its expression increases in neurons after brain injury or stimulation, suggesting a role in synaptic plasticity.
Area of Science:
- Neuroscience
- Molecular Biology
- Biochemistry
Background:
- CD26 is a lymphocyte membrane antigen crucial for T-cell activation.
- BSPL is a novel brain-specific dipeptidyl peptidase-like protein.
- BSPL shares structural similarities with CD26 but lacks peptidase activity.
Purpose of the Study:
- To characterize the novel brain-specific protein BSPL.
- To investigate the expression patterns and regulation of BSPL in the central nervous system (CNS).
- To explore the potential role of BSPL in synaptic plasticity.
Main Methods:
- cDNA cloning and sequencing to identify BSPL.
- In situ hybridization to analyze BSPL mRNA expression.
- Kainic acid injection and tetanic stimulation to induce neuronal activity.
Main Results:
- BSPL mRNA levels significantly increased in the hippocampus (CA3 region) 24 hours after kainic acid injection.
- Tetanic stimulation leading to long-term potentiation (LTP) also elevated BSPL mRNA levels in the dentate gyrus.
- BSPL expression was observed in neuronal processes and some glial cells following stimulation.
Conclusions:
- BSPL is a neuronally expressed protein in the CNS.
- BSPL expression is upregulated in response to neuronal injury and stimulation.
- These findings suggest BSPL may play a role in synaptic plasticity and neuronal function.