TLQP-62 (mouse,rat)
TLQP-62 (mouse,rat) is a secreted C-terminal peptide that can be derived from protein VGF. TLQP-62 activates the BDNF-TrkB signaling pathway, inducing acute, transient phosphorylation of TrkB receptor and downstream CREB (Ser133) phosphorylation. TLQP-62 demonstrates excellent efficacy in promoting long-term fear memory formationin wild-type mice and reversing memory impairment in VGF heterozygous knock-out mice. TLQP-62 can be used for the study of memory-related neurological disorders (e.g., Alzheimer’s disease, frontotemporal dementia).
For research use only. We do not sell to patients.
- Formula: C318H499N109O97
- Molecular Weight:7401.04
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All Endogenous Metabolite Isoforms
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Biological Activity
Description
In Vitro
TLQP-62 (10 μM, 10 min) acutely and transiently activates TrkB receptor phosphorylation[1].
TLQP-62 (10 μM, 30 min) induces CREB phosphorylation (Ser133) and promotes cofilin phosphorylation in mouse hippocampal slices[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
In Vivo
TLQP-62 (5 mg/kg, i.p., once immediately after CFC training) reverses memory impairment in male N2F1 VGF heterozygous knock-out mice[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Male C57BL/6J mice (2-3 months old)[1]
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Dosage:0.3 μg/side
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Administration:Bilateral hippocampal injection once immediately after training
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Result:Achieved enhanced long-term fear memory formation.
Showed significant induction of CREB phosphorylation (Ser133) in the dorsal hippocampus, with a magnitude and kinetics similar to recombinant BDNF-induced CREB phosphorylation.
Appeared no significant effects on short-term memory or locomotor activity.
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Animal Model:VGF germline heterozygous knock-out mouse[1]
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Dosage:5 mg/kg
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Administration:i.p. once immediately after CFC training
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Result:Achieved reversed memory impairment in VGF heterozygous knock-out mice.
Restored Rac1 mRNA induction in the dorsal hippocampus.
Showed no enhancement of memory performance.
Chemical Information
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Molecular Weight 7401.04
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Formula C318H499N109O97
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Sequence
Thr-Leu-Gln-Pro-Pro-Ala-Ser-Ser-Arg-Arg-Arg-His-Phe-His-His-Ala-Leu-Pro-Pro-Ala-Arg-His-His-Pro-Asp-Leu-Glu-Ala-Gln-Ala-Arg-Arg-Ala-Gln-Glu-Glu-Ala-Asp-Ala-Glu-Glu-Arg-Arg-Leu-Gln-Glu-Gln-Glu-Glu-Leu-Glu-Asn-Tyr-Ile-Glu-His-Val-Leu-Leu-His-Arg-Pro
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Sequence Shortening
TLQPPASSRRRHFHHALPPARHHPDLEAQARRAQEEADAEERRLQEQEELENYIEHVLLHRP
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Protocols
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Kinase activity and phosphorylation assays
Kinase activity assays measure the ability of kinases to transfer phosphate groups from ATP to specific substrates, while phosphorylation assays detect the presence and levels of phosphorylated proteins. Common methods include radiolabeled ATP incorporation (e. g. ,), ADP release detection via bioluminescence (e. g. ,[3]), enzyme-linked immunosorbent assays (ELISA) for phospho-specific epitopes (e. g. ,[6]), and microtiter-based formats for high-throughput screening (e. g. ,[8]). The ADP-Glo assay quantifies kinase activity by measuring ADP produced during phosphorylation using a luciferase-based system. Radiometric assays involve autoradiography or scintillation counting after incorporation of 32P-labeled ATP into substrate proteins. ELISA-based approaches rely on phospho-specific antibodies to detect activated kinases in cell lysates or purified samples.
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Western Blot
Western blotting (WB) is a commonly used experimental method in molecular biology, biochemistry, and immunogenetics for identifying and quantifying target proteins. It combines gel electrophoresis with immunoassay, enabling researchers to analyze protein expression, post-translational modifications, and molecular weight.
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Protocol for Kinase activity and phosphorylation assays
Kinase activity assays measure transfer of phosphate from ATP to a protein or peptide substrate, generating phosphorylated substrate, ADP, or incorporated radiolabeled phosphate as the readout; phosphorylation assays measure site-specific phosphorylation in cells or tissues as a proxy for kinase-pathway activation, inhibition, or substrate regulation. Phosphorylation can be detected by phospho-specific Western blot, immunoprecipitation kinase assay, phospho-immunofluorescence, phospho-flow cytometry, luminescent ADP detection, radiolabeled ATP incorporation, or reporter-based pathway assays, and these readouts can be applied to cancer cells, primary neurons, mouse tumors, organoids, inflammatory macrophages, ferroptosis studies, and mitophagy studies when the kinase target is biologically relevant.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)