ACV 1α9α10-selective antagonist CAS# 740980-24-9 |
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Quality Control & MSDS
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| Cas No. | 740980-24-9 | SDF | Download SDF |
| PubChem ID | 134812803 | Appearance | Powder |
| Formula | C71H103N23O25S4 | M.Wt | 1806.98 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Synonyms | Conotoxin Vc1.1 | ||
| Solubility | Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc. | ||
| Sequence | GCCSDPRCNYDHPEIC (Modifications: Cys-16 - C-terminal amide, Disulfide bridge between 2 - 8, 3 - 16) | ||
| Chemical Name | 3-[(1R,6R,12S,15S,21S,24S,30S,33R,36S,39S,45S,48S,53R)-53-[(2-aminoacetyl)amino]-30-(2-amino-2-oxoethyl)-9-[(2S)-butan-2-yl]-36-(3-carbamimidamidopropyl)-6-carbamoyl-24,45-bis(carboxymethyl)-48-(hydroxymethyl)-27-[(4-hydroxyphenyl)methyl]-21-(1H-imidazol-4-ylmethyl)-8,11,14,20,23,26,29,32,35,38,44,47,50,52-tetradecaoxo-3,4,55,56-tetrathia-7,10,13,19,22,25,28,31,34,37,43,46,49,51-tetradecazatetracyclo[31.17.7.015,19.039,43]heptapentacontan-12-yl]propanoic acid | ||
| SMILES | CCC(C)C1C(=O)NC(CSSCC2C(=O)NC(C(=O)NC(C(=O)N3CCCC3C(=O)NC(C(=O)NC(CSSCC(C(=O)N2)NC(=O)CN)C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)N4CCCC4C(=O)NC(C(=O)N1)CCC(=O)O)CC5=CNC=N5)CC(=O)O)CC6=CC=C(C=C6)O)CC(=O)N)CCCNC(=N)N)CC(=O)O)CO)C(=O)N | ||
| Standard InChIKey | KJQOYUHYAZGPIZ-YOHPVECOSA-N | ||
| Standard InChI | InChI=1S/C71H103N23O25S4/c1-3-32(2)55-68(117)89-44(56(74)105)27-120-122-30-47-65(114)88-43(26-95)62(111)87-42(23-54(103)104)70(119)94-18-6-8-48(94)66(115)81-36(7-4-16-78-71(75)76)57(106)90-46(29-123-121-28-45(63(112)91-47)80-51(98)24-72)64(113)84-39(21-50(73)97)60(109)83-38(19-33-10-12-35(96)13-11-33)59(108)85-40(22-53(101)102)61(110)86-41(20-34-25-77-31-79-34)69(118)93-17-5-9-49(93)67(116)82-37(58(107)92-55)14-15-52(99)100/h10-13,25,31-32,36-49,55,95-96H,3-9,14-24,26-30,72H2,1-2H3,(H2,73,97)(H2,74,105)(H,77,79)(H,80,98)(H,81,115)(H,82,116)(H,83,109)(H,84,113)(H,85,108)(H,86,110)(H,87,111)(H,88,114)(H,89,117)(H,90,106)(H,91,112)(H,92,107)(H,99,100)(H,101,102)(H,103,104)(H4,75,76,78)/t32-,36-,37-,38?,39-,40-,41-,42-,43-,44-,45-,46-,47-,48-,49-,55?/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 | Neuronal nicotinic receptor antagonist that displays selectivity for the α9α10 subtype (IC50 values are 19, 140, 980, 4200 and 7300 nM for α9α10, α6/α3β2β3, α6/α3β4, α3β4 and α3β2 subtypes respectively). Alleviates neuropathic pain in three rat models of human neuropathic pain and accelerates functional recovery of injured neurons. |
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Genotypic detection of acyclovir-resistant HSV-1: characterization of 67 ACV-sensitive and 14 ACV-resistant viruses.[Pubmed:18336925]
Antiviral Res. 2008 Jul;79(1):28-36.
Infections due to herpes simplex virus (HSV) resistant to acyclovir (ACV) represent an important clinical concern in immunocompromised patients. In order to switch promptly to an appropriate treatment, rapid viral susceptibility assays are required. We developed herein a genotyping analysis focusing on thymidine kinase gene (TK) mutations in order to detect acyclovir-resistant HSV in clinical specimens. A total of 85 HSV-1 positive specimens collected from 69 patients were analyzed. TK gene could be sequenced directly for 81 clinical specimens (95%) and 68 HSV-1 specimens could be characterized as sensitive or resistant by genotyping (84%). Genetic characterization of 67 susceptible HSV-1 specimens revealed 10 polymorphisms never previously described. Genetic characterization of 14 resistant HSV-1 revealed 12 HSV-1 with either TK gene additions/deletions (8 strains) or substitutions (4 strains) and 2 HSV-1 with no mutation in the TK gene. DNA polymerase gene was afterwards explored. With this rapid PCR-based assay, ACV-resistant HSV could be detected directly in clinical specimens within 24 h.
Bone marrow transplantation in a child with Wiskott-Aldrich syndrome latently infected with acyclovir-resistant (ACV(r)) herpes simplex virus type 1: emergence of foscarnet-resistant virus originating from the ACV(r) virus.[Pubmed:12210436]
J Med Virol. 2002 Sep;68(1):99-104.
A human leukocyte antigen (HLA)-matched unrelated bone marrow transplantation (BMT) was performed in a 13-year-old patient with the congenital immunodeficiency syndrome, Wiskott-Aldrich syndrome. The patient had a history of acyclovir (ACV)-resistant (ACV(r)) herpes simplex virus type 1 (HSV-1) infections prior to BMT. After BMT, the skin lesions caused by HSV-1 relapsed on the face and genito-anal areas. Ganciclovir (GCV) therapy was initiated, but the mucocutaneous lesions worsened. An HSV-1 isolate recovered from the lesions during this episode was resistant to both ACV and GCV. The ACV(r) isolate was confirmed to have the same mutation in the viral thymidine kinase (TK) gene as that of the previously isolated ACV(r) isolates from the patient. After treatment switch to foscarnet (PFA), there was a satisfactory remission but not a complete recovery. Although the mucocutaneous lesions improved, a PFA-resistant (PFA(r)) HSV-1 was isolated 1 month after the start of PFA therapy. The PFA(r) HSV-1 isolate coded for the same mutation in the viral TK gene as the ACV(r) HSV-1 isolates. Furthermore, the PFA(r) isolate also expressed a mutated viral DNA polymerase (DNA pol) with an amino acid (Gly) substitution for Val at position 715. This is the first report on the clinical course of a BMT-associated ACV(r) HSV-1 infection that subsequently developed resistance to foscarnet as well.
Ellagitannins as synergists of ACV on the replication of ACV-resistant strains of HSV 1 and 2.[Pubmed:25111906]
Antiviral Res. 2014 Oct;110:104-14.
The plant-derived polyphenolic compounds castalagin, vescalagin and grandinin (C-glucosidic ellagitannins containing nonahydroxyterphenoyl) manifested a strong inhibitory effect on the replication of acyclovir-resistant strains of herpes simplex viruses (HSV) type 1 and 2 in MDBK cells in focus forming units (i.e., microscopically registered microplaques) reduction assay and in two variants of cytopathic effect inhibition test. The effect on the acyclovir (ACV)-resistant herpes simplex virus type 1 (HSV-1) strain was markedly higher compared to that on the ACV-resistant herpes simplex virus type 2 (HSV-2). The three compounds showed comparable levels of antiviral activity against ACV-resistant HSV strains, in contrast with previous results where castalagin exerted the highest degree of activity against wild type HSV strains (Vilhelmova et al., 2011). Combinations of ellagitannins and ACV were tested on the ACV-resistant strains of both HSV-1 and 2 and produced synergistic effects that were revealed by applying the three-dimensional approach of Prichard and Shipman (1990). The ellagitannin(s)-ACV combination applied against ACV-resistant HSV-1 produced a much stronger synergistic effect compared to the effect observed against ACV-resistant HSV-2. The study of the effects of the combination ellagitannin(s)-ACF on intact cell monolayers did not show any toxicity resulting from interaction between the two substances. Altogether, the results obtained in this study demonstrate the highly promising potential of these plant polyphenols as antiherpetic agents.
Genotypic and phenotypic characterization of the thymidine kinase of ACV-resistant HSV-1 derived from an acyclovir-sensitive herpes simplex virus type 1 strain.[Pubmed:12406508]
Antiviral Res. 2002 Dec;56(3):253-62.
Twenty-four strains of acyclovir (ACV)-resistant (ACV(r)) herpes simplex virus type 1 (HSV-1) were generated from the HSV-1 TAS strain by exposure to ACV, and the genotype and phenotype of the thymidine kinase (TK) from these mutants were analyzed. The TK polypeptide of the ACV(r) HSV-1 strains was examined by Western blot using an anti-HSV-1 TK rabbit serum. The sensitivity of each strain to ACV, foscarnet and cidofovir (CDV) was also determined. A single guanine (G) insertion or a single cytosine (C) deletion was detected in 12 of the 24 ACV(r) strains at the G or C homopolymer stretches within the TK gene. Genotypic analysis predicted that two thirds of the ACV(r) HSV-1 strains expressed truncated TK polypeptides, while one third expressed viral TK polypeptide with a single amino acid substitution at various sites. Western blot abnormalities in the viral TK polypeptides were identified in 21 ACV(r) strains. There was an inverse correlation between the susceptibility of the HSV-1 mutant strains to ACV and that to CDV. Nucleotide sequencing of the TK gene and Western blot analysis of the viral TK polypeptides are considered to be one of the methods for predicting virus sensitivity to ACV and CDV.
Scanning mutagenesis of alpha-conotoxin Vc1.1 reveals residues crucial for activity at the alpha9alpha10 nicotinic acetylcholine receptor.[Pubmed:19447885]
J Biol Chem. 2009 Jul 24;284(30):20275-84.
Vc1.1 is a disulfide-rich peptide inhibitor of nicotinic acetylcholine receptors that has stimulated considerable interest in these receptors as potential therapeutic targets for the treatment of neuropathic pain. Here we present an extensive series of mutational studies in which all residues except the conserved cysteines were mutated separately to Ala, Asp, or Lys. The effect on acetylcholine (ACh)-evoked membrane currents at the alpha9alpha10 nicotinic acetylcholine receptor (nAChR), which has been implicated as a target in the alleviation of neuropathic pain, was then observed. The analogs were characterized by NMR spectroscopy to determine the effects of mutations on structure. The structural fold was found to be preserved in all peptides except where Pro was substituted. Electrophysiological studies showed that the key residues for functional activity are Asp(5)-Arg(7) and Asp(11)-Ile(15), because changes at these positions resulted in the loss of activity at the alpha9alpha10 nAChR. Interestingly, the S4K and N9A analogs were more potent than Vc1.1 itself. A second generation of mutants was synthesized, namely N9G, N9I, N9L, S4R, and S4K+N9A, all of which were more potent than Vc1.1 at both the rat alpha9alpha10 and the human alpha9/rat alpha10 hybrid receptor, providing a mechanistic insight into the key residues involved in eliciting the biological function of Vc1.1. The most potent analogs were also tested at the alpha3beta2, alpha3beta4, and alpha7 nAChR subtypes to determine their selectivity. All mutants tested were most selective for the alpha9alpha10 nAChR. These findings provide valuable insight into the interaction of Vc1.1 with the alpha9alpha10 nAChR subtype and will help in the further development of analogs of Vc1.1 as analgesic drugs.
Are alpha9alpha10 nicotinic acetylcholine receptors a pain target for alpha-conotoxins?[Pubmed:17804600]
Mol Pharmacol. 2007 Dec;72(6):1406-10.
The synthetic alpha-conotoxin Vc1.1 is a small disulfide bonded peptide currently in development as a treatment for neuropathic pain. Unlike Vc1.1, the native post-translationally modified peptide vc1a does not act as an analgesic in vivo in rat models of neuropathic pain. It has recently been proposed that the primary target of Vc1.1 is the alpha9alpha10 nicotinic acetylcholine receptor (nAChR). We show that Vc1.1 and its post-translationally modified analogs vc1a, [P6O]Vc1.1, and [E14gamma]Vc1.1 are equally potent at inhibiting ACh-evoked currents mediated by alpha9alpha10 nAChRs. This suggests that alpha9alpha10 nAChRs are unlikely to be the molecular mechanism or therapeutic target of Vc1.1 for the treatment of neuropathic pain.
A novel alpha-conotoxin identified by gene sequencing is active in suppressing the vascular response to selective stimulation of sensory nerves in vivo.[Pubmed:12779345]
Biochemistry. 2003 Jun 10;42(22):6904-11.
We describe the identification of a conopeptide sequence in venom duct mRNA from Conus victoriae that suppresses a vascular response to pain in the rat. PCR-RACE was used to screen venom duct cDNAs for those transcripts that encode specific antagonists of vertebrate neuronal nicotinic acetylcholine receptors (nAChRs). One of these peptides, Vc1.1, was active as an antagonist of neuronal nAChRs in receptor binding and functional studies in bovine chromaffin cells. It also suppressed the vascular responses to unmyelinated sensory nerve C-fiber activation in rats. Such vascular responses are involved in pain transmission. Furthermore, its ability to suppress C-fiber function was greater than that of MVIIA, an omega-conotoxin with known analgesic activity in rats and humans. Vc1.1 has a high degree of sequence similarity to the alpha-conotoxin family of peptides and has the 4,7 loop structure characteristic of the subfamily of peptides that act on neuronal-type nAChRs. The results suggest that neuronal alpha-conotoxins should be further investigated with respect to their potential to suppress pain.
