Home Microbiology Integrase inhibitor Raltegravir potassium For research use only.

Raltegravir potassium

Synonyms: MK-0518 potassium

Raltegravir Potassium(MK-0518 potassium) is the orally bioavailable potassium salt of raltegravir, the first approved human immunodeficiency virus type 1 (HIV-1) integrase inhibitor.

Raltegravir potassium Chemical Structure

Raltegravir potassium Chemical Structure

CAS No. 871038-72-1

Purity & Quality Control

Batch: S524501 DMSO]96 mg/mL]false]Ethanol]10 mg/mL]false]Water]Insoluble]false Purity: 99.75%
99.75

Raltegravir potassium Related Products

Signaling Pathway

Integrase Signaling Pathways

Integrase Signaling Pathway

Biological Activity

Description Raltegravir Potassium(MK-0518 potassium) is the orally bioavailable potassium salt of raltegravir, the first approved human immunodeficiency virus type 1 (HIV-1) integrase inhibitor.
Targets
HIV integrase [2]
In vitro
In vitro

PFV IN carrying the S217H substitution is 10-fold less susceptible to Raltegravir with IC50 of 900 nM. PFV IN displays 10% of WT activity and is inhibited by Raltegravir with an IC50 of 200 nM, indicating a ~twofold decrease in susceptibility to the IN strand transfer inhibitor (INSTI) compared with WT IN. S217Q PFV IN is as sensitive to Raltegravir as the WT enzyme. [1] Raltegravir is metabolized by glucuronidation, not hepatically. Raltegravir has potent in vitro activity against HIV-1, with a 95% inhibitory concentration of 31?0 nM, in human T lymphoid cell cultures. Raltegravir is also active against HIV-2 when Raltegravir is tested in CEMx174 cells, with an IC95 of 6 nM. Raltegravir metabolism occurs primarily through glucuronidation. Drugs that are strong inducers of the glucuronidation enzyme, UGT1A1, significantly reduce Raltegravir concentrations and should not be used. Raltegravir exhibits weak inhibitory effects on hepatic cytochrome P450 activity. Raltegravir does not induce CYP3A4 RNA expression or CYP3A4-dependent testosterone 6-β-hydroxylase activity. [2] Raltegravir cellular permeativity is reduced in the presence of magnesium and calcium. [3] Raltegravir and related HIV-1 integrase (IN) strand transfer inhibitors (INSTIs efficiently block viral replication. [4] In acutely infected human lymphoid CD4+ T-cell lines MT-4 and CEMx174, SIVmac251 replication is efficiently inhibited by Raltegravir, which shows an EC90 in the low nanomolar range. [5]
Cell Research Cell lines Human MT-4 cells
Concentrations 0.0001-1 μM
Incubation Time 5 days
Method

Human MT-4 cells are infected for 2 hours with the SIVmac251, HIV-1 (IIIB) and HIV-2 (CDC 77618) stocks at a multiplicity of infection of, approximately, 0.1. Cells are then washed three times in phosphate buffered saline, and suspended at 5 × 105/mL in fresh culture medium (to primary cells 50 units/mL of IL-2 are added) in 96-well plates, in the presence or absence of a range of triplicate raltegravir concentrations (0.0001 μM -1 μM). Untreated infected and mock-infected controls are prepared too, in order to allow comparison of the data derived from the different treatments. Viral cytopathogeniciy in MT-4 cells is quantitated by the methyl tetrazolium (MTT) method (MT-4/MTT assay) when extensive cell death in control virus-infected cell cultures is detectable microscopically as lack of capacity to re-cluster. The capability of MT-4 cells to form clusters after infection. Briefly, clusters are disrupted by pipetting; and, after 2 hours of incubation at 37 ℃, the formation of new clusters is assessed by light microscopy (100 × magnification). Cell culture supernatants are collected for HIV-1 p24 and HIV-2/SIVmac251 p27 core antigen measurement by ELISA. In CEMx174-infected cell cultures, which show a propensity to form syncytia induced by the virus envelope glycoproteins, syncytia are counted, in blinded fashion, by light microscopy for each well at 5 days following infection.
In Vivo
In vivo

Raltegravir induces viro-immunological improvement of nonhuman primates with progressing SIVmac251 infection. One non-human primate shows an undetectable viral load following Raltegravir monotherapy. [5]
Animal Research Animal Models Indian Rhesus macaques
Dosages 50 mg/kg or 100 mg/kg
Administration Oral administration

Chemical Information & Solubility

Molecular Weight 482.51 Formula

C20H20FN6O5.K
CAS No. 871038-72-1 SDF --
Smiles CC1=NN=C(O1)C(=O)NC(C)(C)C2=NC(=C(C(=O)N2C)[O-])C(=O)NCC3=CC=C(C=C3)F.[K+]
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 96 mg/mL ( (198.95 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 10 mg/mL

Water : Insoluble


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In vivo
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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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