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Meleagrin

Cat No.:V25247 Purity: ≥98%
Meleagrin (6-O-Methyloxaline) is a naturally occurring antibiotic/alkaloid isolated from a deep ocean, penicillin-producing P. chrysogenum with antitumor and antibacterial activity.
Meleagrin
Meleagrin Chemical Structure CAS No.: 71751-77-4
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
2mg
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Product Description
Meleagrin (6-O-Methyloxaline) is a naturally occurring antibiotic/alkaloid isolated from a deep ocean, penicillin-producing P. chrysogenum with antitumor and antibacterial activity. It can be extracted from a number of species of penicillium and can inhibit the growth of S. aureus, E.coli and S.pneumoniae. Meleagrin acts as a FabI inhibitor. Bacterial enoyl-acyl carrier protein reductase (FabI) is a promising novel antibacterial target.
Meleagrin is a natural product, specifically a secondary metabolite belonging to the roquefortine/meleagrin alkaloid family produced by fungi of the genus Penicillium. It displays antimicrobial, antiviral, and antiproliferative activities. Meleagrin is a FabI inhibitor and a lead c-Met inhibitory entity for controlling c-Met-dependent metastatic breast malignancies.
Biological Activity I Assay Protocols (From Reference)
Targets
c-Met/HGFR; FabI (enoyl-ACP reductase).
ln Vitro
Human breast cancer cell lines MDA-MB-231, MDA-468, BT-474, SK BR-3, MCF7, and MCF7-dox cannot proliferate when meleagrin is present [3]. Breast cancer cell lines' HGF-induced cell migration and invasion are inhibited by meleagrin in a dose-dependent manner [3].
Meleagrin is a class of FabI inhibitor. It serves as a lead c-Met inhibitory entity for controlling c-Met-dependent metastatic and invasive breast malignancies. The compound has antimicrobial, antiviral, and antiproliferative activities. It has been shown to have antitumor activities.
ln Vivo
In an orthotopic athymic nude mouse model, meleagrin efficiently suppresses the growth of invasive triple-negative breast carcinoma cells [3].
Meleagrin has demonstrated in vivo antitumor activities in preclinical studies. It has been studied for its antifouling properties in barnacle models. The compound has also been investigated for its role in the biosynthesis of mycotoxins in Penicillium species. Further in vivo studies would be needed to fully characterize its therapeutic potential in cancer.
Enzyme Assay
In vitro enzyme assays for FabI inhibition use recombinant FabI enzyme and the substrate crotonyl-CoA. Meleagrin is incubated with FabI, NADH, and crotonyl-CoA at varying concentrations (typically 0.01-100 µM). Enzyme activity is measured spectrophotometrically at 340 nm by monitoring NADH oxidation. IC50 values are calculated from dose-response curves. For c-Met inhibition, kinase assays using recombinant c-Met and appropriate peptide substrates are performed.
Cell Assay
In vitro cellular assays are performed using breast cancer cell lines (e.g., MDA-MB-231 or MCF-7) or other cancer cell lines. Cells are treated with Meleagrin at concentrations ranging from 0.01-100 µM for 24-72 hours. Cell proliferation is measured using MTT or CellTiter-Glo assays. c-Met phosphorylation is assessed by Western blot. Apoptosis is measured by Annexin V/PI staining and caspase-3/7 activity. Cell migration and invasion are assessed using Transwell assays. Antimicrobial activity is tested against bacterial cultures.
Animal Protocol
In vivo efficacy is evaluated in mouse xenograft models using breast cancer cell lines. Meleagrin is administered orally or intraperitoneally at doses ranging from 1-50 mg/kg. Tumor volume is measured by caliper twice weekly. c-Met phosphorylation and downstream signaling markers are assessed in tumor tissues. Body weight and clinical signs are monitored for tolerability. For antifouling studies, barnacle settlement assays are performed.
ADME/Pharmacokinetics
Meleagrin has a molecular weight of 433.46-433.50 g/mol and molecular formula C23H23N5O4. CAS number: 71751-77-4. Purity ≥98%. Store as a powder at -20°C. Soluble in DMSO. The compound is a natural product isolated from Penicillium fungi. For in vivo use, formulate in suitable vehicle.
Toxicity/Toxicokinetics
No detailed toxicity data is publicly available for Meleagrin. As a research compound, it is not intended for human use and has not undergone formal toxicological evaluation. Standard preclinical safety assessments would include cytotoxicity profiling in mammalian cell lines, hERG channel inhibition for cardiac safety, and CYP450 enzyme inhibition for drug-drug interaction potential. The compound is for research use only.
References

[1]. Unveiling sequential late-stage methyltransferase reactions in the meleagrin/oxaline biosyntheticpathway. Org Biomol Chem. 2018 Sep 11;16(35):6450-6459.

[2]. Meleagrin, a new FabI inhibitor from Penicillium chryosogenum with at least one additional mode of action. PLoS One. 2013 Nov 28;8(11):e78922.

[3]. The indole alkaloid meleagrin, from the olive tree endophytic fungus Penicillium chrysogenum, as a novel lead for the control of c-Met-dependent breast cancer proliferation, migration and invasion. Bioorg Med Chem. 2016 Jan 15;24(2):113-22.

Additional Infomation
Meleagrin has been reported to be detected in both Penicillium meleagrinum and Penicillium chrysogenum, and relevant data are available. See also: Meleagrin (note moved to).
Meleagrin is a research-grade natural alkaloid with antimicrobial and anticancer activities. It is not approved for clinical use. The compound belongs to the roquefortine/meleagrin alkaloid family. It is produced by Penicillium chrysogenum and other fungi. Meleagrin is supplied as a powder with high purity and should be stored desiccated at -20°C. It is a valuable tool for studying c-Met signaling and bacterial fatty acid synthesis.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C23H23N5O4
Molecular Weight
433.4598
Exact Mass
433.175
CAS #
71751-77-4
PubChem CID
23728435
Appearance
Off-white to light yellow solid powder
Density
1.47g/cm3
Index of Refraction
1.717
LogP
2.681
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
6
Rotatable Bond Count
4
Heavy Atom Count
32
Complexity
929
Defined Atom Stereocenter Count
2
SMILES
CC(C)(C=C)[C@@]12C=C(C(=O)N\3[C@]1(NC(=O)/C3=C\C4=CN=CN4)N(C5=CC=CC=C25)OC)O
InChi Key
JTJJJLSLKZFEPJ-ZAYCRUKZSA-N
InChi Code
InChI=1S/C23H23N5O4/c1-5-21(2,3)22-11-18(29)20(31)27-17(10-14-12-24-13-25-14)19(30)26-23(22,27)28(32-4)16-9-7-6-8-15(16)22/h5-13,29H,1H2,2-4H3,(H,24,25)(H,26,30)/b17-10+/t22-,23-/m0/s1
Chemical Name
(1S,9R,14E)-11-hydroxy-14-(1H-imidazol-5-ylmethylidene)-2-methoxy-9-(2-methylbut-3-en-2-yl)-2,13,16-triazatetracyclo[7.7.0.01,13.03,8]hexadeca-3,5,7,10-tetraene-12,15-dione
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.3070 mL 11.5351 mL 23.0702 mL
5 mM 0.4614 mL 2.3070 mL 4.6140 mL
10 mM 0.2307 mL 1.1535 mL 2.3070 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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