Proteomic profiling of sclerotic hippocampus revealed dysregulated packaging of vesicular neurotransmitters in temporal lobe epilepsy.

Epilepsy Research
Yusheng ZhangWei Ge

Abstract

Temporal lobe epilepsy (TLE) is the most common type of epilepsy. Hippocampal sclerosis is the most distinctive pathological feature of TLE; however, its role in the pathogenesis of TLE remains to be clarified. We performed global protein expression analysis of hippocampus from TLE patients and controls, aiming to reveal the molecular signaling pathways related to TLE. Proteomic and bioinformatic analyses of the hippocampus were performed on 4 TLE and 4 control samples. High-resolution liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), in combination with TMT-6plex quantification, was applied for global protein expression analysis. The proteomics results were validated by Western blot with 25 TLE and 25 control individuals and Immunohistochemistry analysis with 33 TLE and 10 control individuals. Bioinformatics analysis demonstrated differentially expressed proteins in the synaptic vesicle pathway, the prostaglandin synthesis and regulation pathway and endocannabinoids and retrograde modulation of synaptic transmission pathway. Among these, excitatory amino acid transporter 1 (EAAT1) and Vesicular glutamate transporter 1 (VGLUT1) are critical for TLE and dysregulated expression might be closely related to the ...Continue Reading

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Citations

Dec 2, 2020·Life Sciences·Enes AkyuzYam Nath Paudel

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