VIP (6-28) (human, rat, porcine, bovine)VIP receptor antagonist CAS# 69698-54-0 |
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Quality Control & MSDS
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| Cas No. | 69698-54-0 | SDF | Download SDF |
| PubChem ID | 90488723 | Appearance | Powder |
| Formula | C126H207N37O34S | M.Wt | 2816.31 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Synonyms | Vasoactive Intestinal Peptide (6-28) | ||
| Solubility | Soluble to 1 mg/ml in water | ||
| Sequence | FTDNYTRLRKQMAVKKYLNSILN (Modifications: Asn-23 = C-terminal amide) | ||
| SMILES | CCC(C)C(C(=O)NC(CC(C)C)C(=O)NC(CC(=O)N)C(=O)N)NC(=O)C(CO)NC(=O)C(CC(=O)N)NC(=O)C(CC(C)C)NC(=O)C(CC1=CC=C(C=C1)O)NC(=O)C(CCCCN)NC(=O)C(CCCCN)NC(=O)C(C(C)C)NC(=O)C(C)NC(=O)C(CCSC)NC(=O)C(CCC(=O)N)NC(=O)C(CCCCN)NC(=O)C(CCCNC(=N)N)NC(=O)C(CC(C)C)NC(=O)C(CCCNC(=N)N)NC(=O)C(C(C)O)NC(=O)C(CC2=CC=C(C=C2)O)NC(=O)C(CC(=O)N)NC(=O)C(CC(=O)O)NC(=O)C(C(C)O)NC(=O)C(CC3=CC=CC=C3)N | ||
| Standard InChIKey | BVEZAVADHLXCKB-KDQGBBDSSA-N | ||
| Standard InChI | InChI=1S/C126H207N37O34S/c1-15-66(10)99(122(195)157-86(53-64(6)7)113(186)150-83(102(135)175)57-94(132)170)161-120(193)92(61-164)159-117(190)90(59-96(134)172)155-114(187)85(52-63(4)5)152-115(188)87(55-71-34-38-73(167)39-35-71)153-109(182)77(30-20-23-46-128)144-107(180)78(31-21-24-47-129)148-121(194)98(65(8)9)160-103(176)67(11)142-105(178)82(44-50-198-14)147-111(184)81(42-43-93(131)169)146-106(179)76(29-19-22-45-127)143-108(181)79(32-25-48-140-125(136)137)145-112(185)84(51-62(2)3)151-110(183)80(33-26-49-141-126(138)139)149-123(196)101(69(13)166)163-119(192)88(56-72-36-40-74(168)41-37-72)154-116(189)89(58-95(133)171)156-118(191)91(60-97(173)174)158-124(197)100(68(12)165)162-104(177)75(130)54-70-27-17-16-18-28-70/h16-18,27-28,34-41,62-69,75-92,98-101,164-168H,15,19-26,29-33,42-61,127-130H2,1-14H3,(H2,131,169)(H2,132,170)(H2,133,171)(H2,134,172)(H2,135,175)(H,142,178)(H,143,181)(H,144,180)(H,145,185)(H,146,179)(H,147,184)(H,148,194)(H,149,196)(H,150,186)(H,151,183)(H,152,188)(H,153,182)(H,154,189)(H,155,187)(H,156,191)(H,157,195)(H,158,197)(H,159,190)(H,160,176)(H,161,193)(H,162,177)(H,163,192)(H,173,174)(H4,136,137,140)(H4,138,139,141)/t66-,67-,68+,69+,75-,76-,77-,78-,79-,80-,81-,82-,83-,84-,85-,86-,87-,88-,89-,90-,91-,92-,98-,99-,100-,101-/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. |
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| 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. |
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| 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. | ||
| Description | VIP receptor antagonist. |
VIP (6-28) (human, rat, porcine, bovine) Dilution Calculator
VIP (6-28) (human, rat, porcine, bovine) Molarity Calculator
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VIP(6-28)(human, rat, porcine, bovine) is an effective antagonist of the actions of exogenous vasoactive intestinal peptide (VIP) on cAMP. Sequence: Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Leu-Asn.
In Vitro:VIP(6-28) is an effective VIP antagonist in the superior cervical ganglion (SCG) , and results obtained using this analog indicate that endogenous VIP can participate in a positive feedback loop in injured sympathetic neurons in which it enhances its own expression. VIP(6-28), when added to short-term cultures of adult SCG at a concentration of 10, 30, or 100 μM, reduces the increase in cAMP levels produced by stimulation with 10 μM VIP by 52, 64, or 81%, respectively. At any of these concentrations tested, VIP(6-28) by itself does not alter cAMP levels. In contrast to its ability to reduce the VIP-stimulated elevation in cAMP levels by 64%, the addition of 30 μM VIP(6-28) to culture medium does not significantly alter cAMP levels measured after stimulation of adult ganglia with either isoproterenol or forskolin (10 μM each). Similar results on the ability of VIP(6-28) to block VIP-stimulated increases in cAMP levels are obtained in neuron-enriched and in non-neuronal cell-enriched dissociated cultures[1].
References:
[1]. Mohney RP, et al. Vasoactive intestinal peptide enhances its own expression in sympathetic neurons after injury. J Neurosci. 1998 Jul 15;18(14):5285-93.
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An evaluation of the efficacy of vasoactive intestinal polypeptide antagonists in vivo in the anaesthetized dog.[Pubmed:12393943]
Pharmacology. 2002 Dec;66(4):206-10.
The effectiveness of competitive peptide vasoactive intestinal polypeptide (VIP) receptor antagonists was evaluated on heart rate in the anaesthetized dog. Two specific antagonists, VIP (6-28) and [D-p-Cl-Phe(6), Leu(17)]-VIP, and a nonspecific antagonist, pituitary adenylate cyclase activating peptide fragment (6-27) (PACAP), were studied. VIP (6-28) and [D-p-Cl-Phe(6), Leu(17)]-VIP (100 microg i.c.) increased the heart rate, whereas PACAP (100 microg i.c.) reduced the baseline heart rate. All three shifted the VIP dose-response curve to the right by two- to threefold for 30 min. In conclusion, PACAP, VIP (6-28), and [D-p-Cl-Phe(6), Leu(17)]-VIP have a direct effect on the heart rate, are equally effective, and the effects last approximately 30 min in vivo.
Vasoactive intestinal peptide enhances its own expression in sympathetic neurons after injury.[Pubmed:9651211]
J Neurosci. 1998 Jul 15;18(14):5285-93.
Neurons in the adult rat superior cervical sympathetic ganglion (SCG) dramatically increase their content of vasoactive intestinal peptide (VIP) and its mRNA after axotomy in vivo and after explantation. Because the VIP gene contains a functional cAMP response element, the effects of cAMP-elevating agents on VIP expression were examined. VIP, forskolin, or isoproterenol increased cAMP accumulation in explanted ganglia. Secretin, a peptide chemically related to VIP, or forskolin increased VIP levels above those seen in ganglia cultured in control medium, whereas treatment with VIP or secretin increased the level of peptide histidine isoleucine (PHI), a peptide coded for by the same mRNA that encodes VIP. VIP or forskolin also increased VIP-PHI mRNA. In contrast, isoproterenol did not alter levels of VIP, PHI, or VIP-PHI mRNA. Although VIP or forskolin increased cAMP levels in both dissociated neurons and in non-neuronal cells, isoproterenol significantly stimulated cAMP accumulation only in the latter. VIP6-28 was an effective antagonist of the actions of exogenous VIP on cAMP and VIP-PHI mRNA in neuron-enriched cultures. When adult SCG explants were cultured in defined medium, endogenous VIP immunoreactivity was released. When VIP6-28 was added to such cultures, it significantly inhibited the increase in VIP-PHI mRNA that normally occurs. These data indicate that VIP, or a closely related molecule, produced by adult neurons after injury can enhance the expression of VIP. Such a mechanism may prolong the period during which VIP is elevated after axonal damage. The possibility is also discussed that, because VIP is present in preganglionic neurons in normal animals, its release during periods of increased sympathetic nerve activity could alter VIP expression in the SCG.
A chimeric VIP-PACAP analogue but not VIP pseudopeptides function as VIP receptor antagonists.[Pubmed:7912431]
Peptides. 1994 Jan;15(1):95-100.
The ability to assess the importance of VIP in different physiological processes is limited by the lack of specific potent antagonists. In the present study, we have adopted two different approaches used successfully with other peptides in an attempt to identify new VIP receptor antagonists. One involves the formation of pseudopeptides by insertion of reduced peptide bonds in the NH2-terminus from position 2 to 8 of VIP. The other methodology involves the formation of a COOH-terminal chimeric analogue by combining VIP(6-28) and PACAP(28-38). The ability of each of these peptides to function as an antagonist was compared with reported VIP antagonists. All of the peptides inhibited [125I]VIP binding to VIP receptors on guinea pig pancreatic acini. For the pseudopeptides the affinities were: [psi 3-4]VIP (0.2 microM) = 4 x [psi 4-5]VIP = 8 x [psi 8-9]VIP = 14 x [psi 6-7]VIP, [psi 2-3]VIP = 25 x [psi 5-6]VIP. Each nonpseudopeptide analogue also inhibited VIP binding with relative potencies of VIP(6-28)-PACAP(28-38) (1 microM) = 2.5 x [4-Cl-D-Phe6,Leu17]VIP, VIP(10-28), neurotensin(6-11)-VIP(7-28) = 6 x [Ac-Tyr1,D-Phe2]GRF. All pseudopeptides were agonists with relative potencies: [psi 3-4]VIP > [psi 6-7], [psi 4-5]VIP > [psi 5-6] > [psi 8- 9]VIP > [psi 2-3]VIP. The reported VIP receptor antagonist, neurotensin(6-11)-VIP(7-28), was also an agonist.(ABSTRACT TRUNCATED AT 250 WORDS)
