Posaconazole

Catalog No.S1257 Batch:S125707

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Technical Data

Formula

C37H42F2N8O4

Molecular Weight 700.78 CAS No. 171228-49-2
Solubility (25°C)* In vitro DMSO 100 mg/mL (142.69 mM)
Water Insoluble
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description Posaconazole is an inhibitor primarily of CYP3A4, but it does not inhibit the activity of other CYP enzymes; Also an inhibitor of sterol C14ɑ demethylase inhibitor with IC50 of 0.25 μM. Posaconazole has a median terminal elimination half-life of 15-35 hours.
Targets
lanosterol 14α-demethylase [1] CYP3A4 [6]
In vitro

Posaconazole has potent trypanocidal activity. Amiodarone acts synergistically with Posaconazole. Posaconazole also affects and disrupts Ca2+ homeostasis in T. cruzi. Posaconazole blocks the biosynthesis of ergosterol, which is essential for parasite survival. Posaconazole has a clear, dose-dependent effect on proliferation of the epimastigote (extracellular) stages, with a minimal inhibitory concentration of 20 nM and an IC50 of 14 nM. Against the clinically relevant intracellular amastigote form of the parasite, Posaconazole is even more potent. Posaconazole has the minimal inhibitory concentration and IC50 values of 3 nM and 0.25 nM. [1] Posaconazole is active against isolates of Candida and Aspergillus spp. that exhibit resistance to Fluconazole, Voriconazole, and Amphotericin B and is much more active than the other triazoles against zygomycetes. [2]

In vivo

Treatment of infected animals with amiodarone alone reduces parasitemia, increases survival 60 days pi (0% for untreated controls vs 40% for amiodarone-treated animals) and, when given in combination with Posaconazole, delays the development of parasitemia. [1] Coadministration of Posaconazole and Boost Plus increases drug exposure compared to the administration of Posaconazole alone in the fasted state. Food, particularly meals high in fat content, significantly increases Posaconazole bioavailability. Systemic exposure to Posaconazole increases 4- and 2.6-fold when it is consumed with a high-fat and nonfat meal, respectively. [3] Posaconazole and Amiodarone may constitute an effective anti-T. cruzi therapy with low side effect. [4] At twice-daily doses of ≥15 mg/kg of body weight, Posaconazole prolongs the survival of the mice and reduces tissue burden. [5]

Features Currently the most advanced candidate for the treatment of Chagas disease.

Protocol (from reference)

Cell Assay:

[1]

  • Cell lines

    Epimastigote form of T. cruzi amastigotes

  • Concentrations

    0 nM -4 nM

  • Incubation Time

    96 hours

  • Method

    The epimastigote form of the parasite is cultivated in liver infusion tryptose medium, supplemented with 10% new born calf serum at 28 °C with strong (120 rpm) agitation. Cultures are initiated at a cell density of 2 × 106 epimastigotes/mL, and Posaconazole is added at a cell density of 0.5−1.0 × 107 epimastigotes/mL. Cell densities are measured by using an electronic particle counter as well as by direct counting with a hemocytometer. Cell viability is followed by Trypan blue exclusion, using light microscopy. Amastigotes are cultured in Vero cells maintained in minimal essential medium supplemented with 1% fetal calf serum in a humidified atmosphere (95% air−5% CO2) at 37 °C. Cells are infected with 10 tissue culture-derived trypomastigotes per cell for 2 hours and then washed three times with phosphate-buffered saline (PBS) to remove nonadherent parasites. Fresh medium with and without Posaconazole is added, and the cells are incubated for 96 hours with a medium change at 48 hours. The percent of infected cells and the numbers of parasites per cell are determined directly using light microscopy, and a statistical analysis of the results is carried out. IC50 values are calculated by nonlinear regression, using the program GraFit. Fractional inhibitory concentrations (FIC) are calculated. Cytoplasmic free Ca2+ concentrations in control and drug-treated extracellular epimastigotes are determined by fluorimetric methods using Fura-2. Subcellular Ca2+ levels and mitochondrial membrane potentials are monitored on individual Vero cells infected with T. cruzi amastigotes by using time-scan confocal microscopy. Briefly, Vero cells heavily infected (72 hours) with T. cruzi amastigotes are plated onto 22 × 40 mm glass coverslips (0.15 mm thickness) and incubated simultaneously with 10 μM cell-permeant Rhod-2 and 10 μg/mL Rhodamine-123 for 50 minutes at 37 °C in culture medium and then washed and incubated with Ringer's solution, with or without amiodarone. Under the conditions used fluorescence of Rhod-2 comes mainly from intracellular Ca2+-rich compartments, like mitochondria, since its low affinity for Ca2+ limits its fluorescence in the Ca2+-poor cytoplasm of the Vero cells or amastigotes. Rhodamine-123 is a mitochondrion-specific cationic dye, which distributes across the inner mitochondrial membranes strictly according to their membrane potential.

Animal Study:

[1]

  • Animal Models

    Female NMRI−IVIC mice with acute Chagas

  • Dosages

    20 mg/kg/d

  • Administration

    Oral

Customer Product Validation

Data from [Data independently produced by , , Eur J Pharm Sci, 2016, 91:190-195. ]

Selleck's Posaconazole has been cited by 27 publications

Interactions between antifungals and everolimus against Cryptococcus neoformans [ Front Cell Infect Microbiol, 2023, 13:1131641] PubMed: 37026056
Synergistic effect of pyrvinium pamoate and posaconazole against Cryptococcus neoformans in vitro and in vivo [ Front Cell Infect Microbiol, 2022, 12:1074903] PubMed: 36569209
The Synergistic Effect of Tacrolimus (FK506) or Everolimus and Azoles Against Scedosporium and Lomentospora Species In Vivo and In Vitro [ Front Cell Infect Microbiol, 2022, 12:864912] PubMed: 35493742
Terconazole, an Azole Antifungal Drug, Increases Cytotoxicity in Antimitotic Drug-Treated Resistant Cancer Cells with Substrate-Specific P-gp Inhibitory Activity [ Int J Mol Sci, 2022, 23(22)13809] PubMed: 36430288
A Preliminary in vitro and in vivo Evaluation of the Effect and Action Mechanism of 17-AAG Combined With Azoles Against Azole-Resistant Candida spp [ Front Microbiol, 2022, 13:825745] PubMed: 35875545
The Role of Isavuconazonium Sulphate for the Treatment of Blastomycosis: A Case Series and Antifungal Susceptibility [ Open Forum Infect Dis, 2022, 9(7):ofac220] PubMed: 35821730
The synergistic effect of minocycline and azole antifungal drugs against Scedosporium and Lomentospora species [ BMC Microbiol, 2022, 22(1):21] PubMed: 35016611
In Vitro and In Vivo Interactions of TOR Inhibitor AZD8055 and Azoles against Pathogenic Fungi [ Microbiol Spectr, 2022, 10(1):e0200721] PubMed: 35019705
Antifungal Activity of Minocycline and Azoles Against Fluconazole-Resistant Candida Species [ Front Microbiol, 2021, 12:649026] PubMed: 34054751
Characterization of Streptomyces sp. LS462 with high productivity of echinomycin, a potent anti-tuberculosis and synergistic antifungal antibiotic [ J Ind Microbiol Biotechnol, 2021, kuab079] PubMed: 34661655

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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