Farletuzumab ecteribulin (MORAb-202)

Cat No.:V52099 Purity: ≥98%
Farletuzumab ecteribulin (MORAb-202) is an antibody-active molecule conjugate (ADC) consisting of the humanized anti-human folate receptor alpha (FRA) antibody Farletuzumab via reduced interchain disulfide bonds.
Farletuzumab ecteribulin (MORAb-202) Chemical Structure CAS No.: 2407465-18-1
Product category: ADCs
This product is for research use only, not for human use. We do not sell to patients.
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1mg
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Product Description
Farletuzumab ecteribulin (MORAb-202) is an antibody-active molecule conjugate (ADC) consisting of the humanized anti-human folate receptor alpha (FRA) antibody Farletuzumab via reduced interchain disulfide bonds. Mal-PEG2-Val-Cit-PAB-eribulin conjugation. Farletuzumab ecteribulin has a bioactive molecule-to-antibody ratio of 4.0. Farletuzumab ecteribulin is highly cytotoxic to FRA-positive cells in vitro. Farletuzumab ecteribulin has potent anticancer effect.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
In vitro, farletuzumab ecteribulin (MORAb-202; 5.1 pM-10 μM; 5 days) exhibits strong cytotoxicity towards FRA-positive cells (IC50 = 1 nM for IgV-1, IC50 = 74 nM for NCI-H2110, and IC50 = 2.3 μM for A431-2A3)[1].
ln Vivo
Farletuzumab ecteribulin (MORAb-202; IV; 1, 5 mg/kg as a single injection on Day 0; or 5 mg/kg every 11 days for 2 doses; 60 days) 5 mg/kg once or twice It exhibits noteworthy anti-tumor effectiveness at kg dose[1]. The first-day AUC(0-t) of farletuzumab ecteribulin (2 mg/kg; i.v.) in male and female cynomolgus monkeys was 7160 and 6300 ug·h/mL, respectively, with T1/2 of 192 and 162 hours [1].
Cell Assay
Cell Cytotoxicity Assay[1]
Cell Types: Human IGROV-1, OVCAR3-A1, NCI-H2110, A431-A3, and SJSA -1 cells
Tested Concentrations: 5.1 pM-10 μM
Incubation Duration: 5 days
Experimental Results: MORAb-202 demonstrated potent cytotoxicity against IGROV-1 (IC50=1 nM), NCI-H2110 (IC50=74 nM), and A431-A3 (IC50 =2.3 μM). demonstrated little killing activity against the FRA-negative cell line SJSA-1 (IC50>10 μM).
Animal Protocol
Animal/Disease Models: Female SWISS nude mice with triple-negative breast cancer (TNBC) patient-derived xenograft (PDx) model (OD-BRE-0631)[1].
Doses: 1, 5 mg/kg
Route of Administration: IV; single injection 1, 5 mg/kg at day 0 ((Q1Dx1) or 5 mg/kg every 11 days (Q11Dx2)); 60 days
Experimental Results: A significant antitumor activity was observed in mice treated once or twice 5 mg/kg, while no antitumor activity compared with vehicle group was observed in mice treated with 1 mg/kg.

Animal/Disease Models: Male and female cynomolgus monkeys[1].
Doses: 2mg/kg ( pharmacokinetic/PK Analysis)
Route of Administration: IV
Experimental Results: Had a T1/2s of 192 and 162 hrs (hours) and AUC(0-t)s of 7160 and 6300 ug·h/mL for male and female cynomolgus monkeys on Day 1.
References
[1]. Keiji Furuuchi, et al. Antibody-drug conjugate MORAb-202 exhibits long-lasting antitumor efficacy in TNBC PDx models. Cancer Sci. 2021 Jun;112(6):2467-2480.
[2]. Xin Cheng, et al. MORAb-202, an Antibody-Drug Conjugate Utilizing Humanized Anti-human FRα Farletuzumab and the Microtubule-targeting Agent Eribulin, has Potent Antitumor Activity. Mol Cancer Ther. 2018 Dec;17(12):2665-2675.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
CAS #
2407465-18-1
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

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 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.)
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?
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  • 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:
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  • 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)
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  • 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:
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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.

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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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