[D-Trp8]-γ-MSH

Selective MC3 receptor agonist CAS# 321351-81-9

[D-Trp8]-γ-MSH

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Chemical structure

[D-Trp8]-γ-MSH

3D structure

Chemical Properties of [D-Trp8]-γ-MSH

Cas No. 321351-81-9 SDF Download SDF
PubChem ID 16158468 Appearance Powder
Formula C74H99N21O16S M.Wt 1570.79
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 1 mg/ml in water
Sequence YVMGHFRWDRFG

(Modifications: Trp-8 = D-Trp)

Chemical Name (3S)-3-[[(2R)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylbutanoyl]amino]-4-methylsulfanylbutanoyl]amino]acetyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-phenylpropanoyl]amino]-5-carbamimidamidopentanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-4-[[(2S)-5-carbamimidamido-1-[[(2S)-1-(carboxymethylamino)-1-oxo-3-phenylpropan-2-yl]amino]-1-oxopentan-2-yl]amino]-4-oxobutanoic acid
SMILES CC(C)C(C(=O)NC(CCSC)C(=O)NCC(=O)NC(CC1=CN=CN1)C(=O)NC(CC2=CC=CC=C2)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC3=CNC4=CC=CC=C43)C(=O)NC(CC(=O)O)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC5=CC=CC=C5)C(=O)NCC(=O)O)NC(=O)C(CC6=CC=C(C=C6)O)N
Standard InChIKey GZWUQPQBOGLSIM-MDMVXOTPSA-N
Standard InChI InChI=1S/C74H99N21O16S/c1-41(2)62(95-63(102)49(75)30-44-22-24-47(96)25-23-44)72(111)90-53(26-29-112-3)64(103)84-38-59(97)87-57(34-46-37-80-40-86-46)70(109)92-55(32-43-16-8-5-9-17-43)68(107)88-52(21-13-28-82-74(78)79)67(106)93-56(33-45-36-83-50-19-11-10-18-48(45)50)69(108)94-58(35-60(98)99)71(110)89-51(20-12-27-81-73(76)77)66(105)91-54(65(104)85-39-61(100)101)31-42-14-6-4-7-15-42/h4-11,14-19,22-25,36-37,40-41,49,51-58,62,83,96H,12-13,20-21,26-35,38-39,75H2,1-3H3,(H,80,86)(H,84,103)(H,85,104)(H,87,97)(H,88,107)(H,89,110)(H,90,111)(H,91,105)(H,92,109)(H,93,106)(H,94,108)(H,95,102)(H,98,99)(H,100,101)(H4,76,77,81)(H4,78,79,82)/t49-,51-,52-,53-,54-,55-,56+,57-,58-,62-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of [D-Trp8]-γ-MSH

DescriptionSelective melanocortin 3 (MC3) receptor agonist (IC50 values are 6.7, 340 and 600 nM for human MC3, MC5 and MC4 receptors respectively). Displays anti-inflammatory efficacy.

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References on [D-Trp8]-γ-MSH

Anti-inflammatory and antiosteoclastogenesis properties of endogenous melanocortin receptor type 3 in experimental arthritis.[Pubmed:20702773]

FASEB J. 2010 Dec;24(12):4835-43.

The development of biological therapies has improved management of rheumatoid arthritis. However, costs and unresponsiveness to therapy in a sizeable proportion of patients limit their use, making it imperative to identify new targets for drug development programs. Here we investigated the melanocortin-receptor type 3 (MC(3)) pathway. Gene-deficient mice were subjected to a model of serum-transfer-induced arthritis and joints analyzed for gene expression (cytokines, MCs) and morphology. Pharmacological analyses were also conducted in this model. Osteoclastogenesis was studied from bone marrow cells. Mc(3)(-/-) mice displayed an exacerbated inflammatory arthritis, associated with prominent bone erosion and higher articular expression of Rankl. Osteoclastogenesis studied from Mc(3)(-/-) bone marrow cells revealed a higher degree of responsiveness to Rankl, linked to prolonged NF-kappaB activation compared to wild types. Up-regulation of a discrete set of inflammatory genes, including Il-1beta, Il-6, and Nos2, was measured in Mc(3)(-/-) mice, and a marked up-regulation of joint Mc(3) accompanied arthritis resolution in wild-type mice. Administration of an MC(3) agonist, D[Trp8]-gamma-MSH, attenuated disease incidence and severity in wild-type but not Mc(3)(-/-) mice. Overall, these findings identify MC(3)-mediated signaling as a beneficial pathway in experimental arthritis; hence this receptor is a novel target for the development of therapeutics for arthritis.

[D-Trp8]-gamma-melanocyte-stimulating hormone exhibits anti-inflammatory efficacy in mice bearing a nonfunctional MC1R (recessive yellow e/e mouse).[Pubmed:16959942]

Mol Pharmacol. 2006 Dec;70(6):1850-5.

Two melanocortin receptors (MC1 and MC3R) have been identified as main transducers of the anti-inflammatory effects of natural and synthetic melanocortins. In this study, we have taken advantage of the recent description of the selective MC3R agonist [d-Trp(8)]-gamma-melanocyte-stimulating hormone (MSH) and of the recessive yellow (e/e) mouse, bearing a nonfunctional MC1R, thereby incrementing our knowledge on this topic. Culturing peritoneal macrophages of recessive yellow (e/e) mice with [d-Trp(8)]-gamma-MSH led to accumulation of cAMP, indicating MC3R receptor functionality: this effect was blocked by a neutralizing antibody against MC3R. Likewise, release of the chemokine KC by urate crystals was attenuated by [d-Trp(8)]-gamma-MSH, and this effect was prevented by synthetic [Ac-Nle(4)-c[Asp(5)-2'-Nal(7),Lys(10)]alpha-MSH(4-10)-NH(2) (SHU9119)] and natural [agouti-related protein (AGRP)] MC3R antagonists but not by the MC4R antagonist Ac-Cys-Nle-Arg-His-d-2-Nal-Arg-Trp-Cys-NH(2) (HS024). Systemic treatment of mice with [d-Trp(8)]-gamma-MSH inhibited KC release and polymorphonuclear cell accumulation elicited by urate crystals in the murine peritoneal cavity. SHU9119 and AGRP prevented the inhibitory actions of [d-Trp(8)]-gamma-MSH, whereas HS024 was inactive. We also demonstrate here that [d-Trp(8)]-gamma-MSH displays a dual mechanism of action by inducing the anti-inflammatory protein heme-oxygenase 1 (HO-1). Treatment with the HO-1 inhibitor zinc protoporphyrin IX exacerbated the inflammatory response elicited by urate crystals and abrogated the anti-inflammatory effects of [d-Trp(8)]-gamma-MSH. In conclusion, these data support the development of the selective MC3R agonist [d-Trp(8)]-gamma-MSH for the treatment of inflammatory pathologies, based on a dual mechanism of cytokine/chemokine inhibition and induction of the anti-inflammatory protein HO-1.

D-Amino acid scan of gamma-melanocyte-stimulating hormone: importance of Trp(8) on human MC3 receptor selectivity.[Pubmed:11150170]

J Med Chem. 2000 Dec 28;43(26):4998-5002.

In our search for potent and receptor-selective agonists and antagonists, we report here the results of D-amino acid substitution at each position of the short peptide gamma-melanocyte-stimulating hormone (gamma-MSH). The native gamma-MSH shows weak binding at all three receptors (i.e., the human MC3, MC4, and MC5) and a selectivity of 1-2 orders of magnitude at the MC3R over the MC4R and MC5R. Sequential replacement of each residue in the gamma-MSH sequence with the corresponding D-isomer results in analogues which mostly have weaker binding affinity than the native peptide, except for two analogues. For the DTrp(8) analogue, there is an increase in binding affinity by about 1 order of magnitude (IC(50) = 6 nM) at the MC3R compared with that of the natural molecule and an increase in selectivity for the MC3R by 2 orders of magnitude compared with the activity at the MC4R and MC5R. The DPhe(6) analogue is about 10-fold more potent (IC(50) = 8.8 nM) at the MC3R compared with the native peptide but lacks subtype selectivity. Measurement of the intracellular cAMP accumulation in human MC3R, MC4R, and MC5R revealed that the native peptide shows potent activity at the MC3R (EC(50) = 5.9 nM) and is about 50-100-fold selective at this receptor compared with the MC4R and MC5R. The DArg(10) (EC(50) = 35 nM) and DPhe(11) (EC(50) = 11 nM) analogues are selective for the MC3R by 1 and 2 orders of magnitude compared with the MC4R and MC5R, respectively. The DTrp(8) compound (EC(50) = 0.33 nM) shows about 300- and 250-fold increase in selectivity at the MC3R compared with the MC4R and MC5R, respectively. Finally, the DTyr(1) peptide is selective for the MC3R (EC(50) = 12 nM) by 40-200-fold compared with the MC4R and MC5R. In general, the trend is that D-amino acid substitutions of the aromatic residues 1, 6, 8, and 11 and the basic residue Arg(10), but not Arg(7), result in an increase in MC3R selectivity over the MC4R and MC5R and only agonist activity is observed. Thus, the key residues of gamma-MSH identified in this study include the aromatic residues 1, 6, 8, and 11 and the basic residue Arg(10) (but not Arg(7)), as important for MC3 selectivity over the MC4 and MC5 subtypes. Further, the study reveals the extreme importance of DTrp at position 8 in imparting potency and selectivity since this is the most selective analogue for the human MC3R reported thus far.

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