G2-Peptide
G2-Peptide is a 3-O-sulfated heparan sulfate (3-OS HS) binder and antiviral agent. G2-Peptide blocks herpesvirus attachment, entry, cell-to-cell spread and syncytium formation, and reduces viral protein translocation. G2-Peptide exhibits antiviral activity against both HSV-1 and HSV-2. G2-Peptide inhibits neural activity and impairs synapse assembly. G2-Peptide can be used in the research of genital herpes, ocular herpes infection and keratitis.
For research use only. We do not sell to patients.
- CAS No.: 361443-81-4
- Formula: C90H155N13O54
- Molecular Weight:2283.25
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
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HSV-2 |
HSV-1 |
G2-Peptide specifically binds to HS on the surface of Vero cells, which is confirmed by the reduced binding observed after heparinase III-mediated HS removal[1].
G2-Peptide (2.5-20 mg/mL; 24 h) shows no cytotoxicity to Vero cells and HCE cells at concentrations of 2.5 mg/mL or lower, while cytotoxicity occurs at higher concentrations[1].
The G2 peptide binds to discrete sites on the axonal surface of mature primary mouse hippocampal neurons[3].
The G2 peptide specifically binds to sites on mouse synaptosomes, which is confirmed by dose-dependent competition assays with unlabeled G2 peptide[3].
G2 peptide (0.1-10 μM) acutely and reversibly suppresses the electrical firing activity of mature primary mouse hippocampal neuron networks in a dose-dependent manner, achieving near-complete silencing at 10 μM[3].
G2-Peptide (0.15-10 mg/well; 1 h) inhibits HSV-2 entry into HeLa cells, with the inhibitory effect reaching its peak at a concentration of 2.5 mg/well[1].
G2-Peptide (2 mg/mL; 30 min) reduces the ability of HSV-2 to invade HeLa cells by approximately 80%, a result confirmed by detecting the decrease in VP16 protein levels[1].
G2-Peptide (0.15-10 mg/mL; 1 h) inhibits plaque formation of HSV-2 in Vero cells, with an IC50 of 1 mg/mL, and reaches the maximum inhibitory effect at a concentration of 2.5 mg/mL[1].
G2-Peptide (0.03125-2 mg/mL; 1 h) dose-dependently inhibits HSV-2-induced cell-cell fusion in CHO-K1 cells expressing HSV-2 entry factors[1].
G2-Peptide (0-0.25 mM; 60 min) potently inhibits HSV-1 entry into CHO-K1 cells expressing 3-OST-3, nectin-1 or HVEM, with an IC50 of 0.02-0.03 mM, and shows no cytotoxicity at concentrations up to 0.5 mM[2].
The G2 peptide significantly reduces glutamate exocytosis evoked at synapses of primary mouse hippocampal neurons[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:HeLa cells
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Concentration:2 mg/mL
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Incubation Time:30 min pretreatment
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Result:Reduced VP16 protein levels by approximately 80% compared to untreated infected cells, indicating significantly reduced viral entry.
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Cell Line:Vero cells, human corneal epithelial (HCE) cells
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Concentration:2.5-20 mg/mL
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Incubation Time:24 h
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Result:Exhibited cytotoxic effects at concentrations above 2.5 mg/mL in both Vero and HCE cells, with reduced viable cell counts and altered cell morphology observed at higher concentrations.
Showed no cytotoxicity at concentrations ≤2.5 mg/mL.
G2-Peptide (0.5 mM) completely blocks the replication and spread of HSV-1 in mouse corneas and maintains corneal epithelial integrity[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:BALB/c (female)[1]
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Dosage:2 mg/mL
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Administration:intravaginal; single pretreatment dose 1 hour before infection
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Result:Reduced average number of genital HSV-2-infected cell colonies from 15 to 1, representing a ~93% reduction.
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Animal Model:BALB/c mice[2]
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Dosage:0.5 mM
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Administration:single prophylactic dose prior to viral inoculation
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Result:Detected virtually no HSV-1 gD protein expression in corneas at 4 and 7 days post-infection.
Maintained intact corneal epithelium at both 4 and 7 days post-infection.
Chemical Information
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CAS No. 361443-81-4
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Molecular Weight 2283.25
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Formula C90H155N13O54
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Sequence
KVA-{Asn(Galβ(1-4)GlcNAcβ(1-2)Manα(1-3)[Galβ(1-4)GlcNAcβ(1-2)Manα(1-6)]Manβ(1-4)GlcNAcβ(1-4)GlcNAc)}-KT
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Sequence Shortening
Lys-Val-Ala-{Asn(Galβ(1-4)GlcNAcβ(1-2)Manα(1-3)[Galβ(1-4)GlcNAcβ(1-2)Manα(1-6)]Manβ(1-4)GlcNAcβ(1-4)GlcNAc)}-Lys-Thr
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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.
Purity & Documentation
References
[1]. Ali MM, et al. A 3-O-sulfated heparan sulfate binding peptide preferentially targets herpes simplex virus 2-infected cells. Journal of virology. 2012 Jun;86(12):6434-43. [Content Brief]
[2]. Tiwari V, et al. Anti-heparan sulfate peptides that block herpes simplex virus infection in vivo. The Journal of biological chemistry. 2011 Jul 15;286(28):25406-15. [Content Brief]
[3]. Maïza A,, et al. 3-O-sulfated heparan sulfate interactors target synaptic adhesion molecules from neonatal mouse brain and inhibit neural activity and synaptogenesis in vitro. Sci Rep. 2020 Nov 5;10(1):19114. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)