Dynorphin A TFA
Based on 2 publication(s) in Google Scholar
Dynorphin A TFA is an endogenous opioid peptide involved in inhibitory neurotransmission in the central nervous system (CNS). Dynorphin A TFA is a highy potent kappa opioid receptor (KOR) agonist, and is also an agonist for other opioid receptors, such as mu (MOR) and delta (DOR). Dynorphin A TFA can induce neuronal death, and can be used in the research of neurological disease.
For research use only. We do not sell to patients.
- Formula: C101H156F3N31O25
- Molecular Weight:2261.50
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
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Biological Activity
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Chemical Information
- Purity & Documentation
- References
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Publications Citing Use of MedChemExpress (MCE) Dynorphin A TFA
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Biological Activity
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Human Endogenous Metabolite |
Caspase-3 |
κ Opioid Receptor/KOR |
Dynorphin A TFA (10 μM, 4 h/72 h) increases caspase-3 activity and the level of cytochrome c released from mitochondria in mouse striatal neurons, and induces neuronal death[3].
dynorphin A TFA (33 μM, 4 h) elevates [Ca2+]i and causes a significant loss of neurons[4].
dynorphin A TFA (1 μM) inhibits the release of vasopressin (VP) from the isolated neural lobe[5].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:Mouse striatal neurons
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Concentration:10 μM
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Incubation Time:0, 24, 48, 72 h
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Result:Induced neuronal death (identified by the fragmentation and destruction of the cell body and neurites).
Dynorphin A TFA (intracerebroventricular injection, 500 pmol/5 μL per day for 4 d) alleviates stress-induced behavioral impairments in ddY mice accompanied by regulation of the 5-HTergic system in the brain[6].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:24 h water-deprived male rats[5]
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Dosage:1 μg of 2 μL
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Administration:Intracerebroventricular injection
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Result:Inhibited vasopressin (VP) release 30 min upon injection.
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Animal Model:Male ddY mice[6]
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Dosage:15, 150, 1500 pmol/5 μL per day for 4 days
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Administration:Intracerebroventricular injection
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Result:Attenuated the repeated stress-induced escape failures from the shock.
Chemical Information
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Molecular Weight 2261.50
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Formula C101H156F3N31O25
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Sequence
Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln
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Sequence Shortening
YGGFLRRIRPKLKWDNQ
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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 (2)
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Journal Impact Factor
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Most Recent
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Neuron
Astrocyte-mediated central amygdala microcircuit gates comorbid anxiety symptoms in chronic pain. [Abstract]2025 Oct 2:S0896-6273(25)00670-1. PMID: 41043420 -
Purity & Documentation
References
[1]. Zhang, et al.Dynorphin A as a Potential Endogenous Ligand for Four Members of the Opioid Receptor Gene Family. J Pharmacol Exp Ther. 1998 Jul;286(1):136-41. [Content Brief]
[2]. Aruna Sharma, et al. Monoclonal antibodies as novel neurotherapeutic agents in CNS injury and repair. Int Rev Neurobiol. 2012;102:23-45. [Content Brief]
[3]. I. N. SINGH, et al. Dynorphin A (1–17) induces apoptosis in striatal neurons in vitro through AMPA/kainate receptor-mediated cytochrome c release and caspase-3 activation. Neuroscience. 2003;122(4):1013-23. [Content Brief]
[4]. B J Van de Heijning, et al. Dynorphin-A and vasopressin release in the rat: a structure-activity study. Neuropeptides. 1994 Jun;26(6):371-8. [Content Brief]
[5]. Takayoshi Mamiya, et al. Dynorphin a (1-13) alleviated stress-induced behavioral impairments in mice. Biol Pharm Bull. 2014;37(8):1269-73. [Content Brief]
[6]. K F Hauser, et al. Dynorphin A (1-13) neurotoxicity in vitro: opioid and non-opioid mechanisms in mouse spinal cord neurons. Exp Neurol. 1999 Dec;160(2):361-75. [Content Brief]
Calculators
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