Cyclotraxin B TFA
Based on 3 publication(s) in Google Scholar
Cyclotraxin B TFA is a BBB-penetrable and selective TrkB inhibitor. Cyclotraxin B TFA inhibits BDNF-induced TrkB activity in a non-competitive manner, with an IC50 of 0.30 nM. Cyclotraxin B TFA has analgesic and anxiolytic effects.
For research use only. We do not sell to patients.
- Formula: C50H74F3N13O19S3
- Molecular Weight:1314.39
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) Cyclotraxin B TFA
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Biological Activity
Description
IC50 & Target
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TrkB |
Chemical Information
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Molecular Weight 1314.39
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Formula C50H74F3N13O19S3
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Sequence Shortening
CNPMGYTKEGC (Disulfide bridge:Cys1-Cys11)
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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.
Publications (3)
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Journal Impact Factor
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Most Recent
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Br J Pharmacol
Cyclic helix B peptide promotes random-pattern skin flap survival via TFE3-mediated enhancement of autophagy and reduction of ROS levels. [Abstract]2022 Jan;179(2):301-321. PMID: 34622942 -
Genes Brain Behav
Alteration of neural activity and neuroinflammatory factors in the insular cortex of mice with corneal neuropathic pain. [Abstract]2023 Apr;22(2):e12842. PMID: 36889983 -
J Mol Neurosci
2022 Dec;72(12):2497-2506. PMID: 36527597
Solvent & Solubility
In Vitro
H2O
Peptide Solubility and Storage Guidelines:
1. Calculate the length of the peptide.
2. Calculate the overall charge of the entire peptide according to the following table:
| Contents | Assign value | |
|---|---|---|
| Acidic amino acid | Asp (D), Glu (E), and the C-terminal -COOH. | -1 |
| Basic amino acid | Arg (R), Lys (K), His (H), and the N-terminal -NH2 | +1 |
| Neutral amino acid | Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) | 0 |
3. Recommended solution:
| Overall charge of peptide | Details |
|---|---|
| Negative (<0) |
1. Try to dissolve the peptide in water first. 2. If water fails, add NH4OH (<50 μL). 3. If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide. |
| Positive (>0) |
1. Try to dissolve the peptide in water first. 2. If water fails, try dissolving the peptide in a 10%-30% acetic acid solution. 3. If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO. |
| Zero (=0) |
1. Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first. 2. For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration. |
Protocols
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
Purity & Documentation
References
[1]. Maxime Cazorla, et al. Cyclotraxin-B, the first highly potent and selective TrkB inhibitor, has anxiolytic properties in mice. PLoS One. 2010 Mar 19;5(3):e9777. [Content Brief]
[2]. Luis Constandil, et al. Cyclotraxin-B, a new TrkB antagonist, and glial blockade by propentofylline, equally prevent and reverse cold allodynia induced by BDNF or partial infraorbital nerve constriction in mice. J Pain. 2012 Jun;13(6):579-89. [Content Brief]
[3]. Michel M M Verheij, et al. Systemic Delivery of a Brain-Penetrant TrkB Antagonist Reduces Cocaine Self-Administration and Normalizes TrkB Signaling in the Nucleus Accumbens and Prefrontal Cortex. J Neurosci. 2016 Aug 3;36(31):8149-59. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)