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- W2000388905 abstract "The secreted glycoprotein reelin plays an indispensable role in neuronal migration during development and in regulating adult synaptic functions. The upstream mechanisms responsible for initiating and regulating the duration and magnitude of reelin signaling are largely unknown. Here we report that reelin is cleaved between EGF-like repeats 6-7 (R6-7) by tissue plasminogen activator (tPA) under cell-free conditions. No changes were detected in the level of reelin and its fragments in the brains of tPA knockouts, implying that other unknown proteases are responsible for generating reelin fragments found constitutively in the adult brain. Induction of NMDAR-independent long-term potentiation with the potassium channel blocker tetraethylammonium chloride (TEA-Cl) led to a specific up-regulation of reelin processing at R6-7 in wild-type mice. In contrast, no changes in reelin expression and processing were observed in tPA knockouts following TEA-Cl treatment. These results demonstrate that synaptic potentiation results in tPA-dependent reelin processing and suggest that extracellular proteolysis of reelin may regulate reelin signaling in the adult brain." @default.
- W2000388905 created "2016-06-24" @default.
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- W2000388905 date "2014-08-01" @default.
- W2000388905 modified "2023-09-27" @default.
- W2000388905 title "Extracellular proteolysis of reelin by tissue plasminogen activator following synaptic potentiation" @default.
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- W2000388905 doi "https://doi.org/10.1016/j.neuroscience.2014.05.046" @default.
- W2000388905 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4381833" @default.
- W2000388905 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24892761" @default.
- W2000388905 hasPublicationYear "2014" @default.
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