| Size | Price | Stock | Qty |
|---|---|---|---|
| 1mg |
|
||
| Other Sizes |
|
| Targets |
Topoisomerase; Camptothecins
|
|---|---|
| References | |
| Additional Infomation |
Topoisomerase I (TOP1) Inhibitors constitute an emerging payload class to engineer antibody-drug conjugates (ADC) as next-generation biopharmaceutical for cancer treatment. Existing ADCs are using camptothecin payloads with lower potency and suffer from limited stability in circulation. With this study, we introduce a novel camptothecin-based linker-payload platform based on the highly potent camptothecin derivative exatecan. First, we describe general challenges that arise from the hydrophobic combination of exatecan and established dipeptidyl p-aminobenzyl-carbamate (PAB) cleavage sites such as reduced antibody conjugation yields and ADC aggregation. After evaluating several linker-payload structures, we identified ethynyl-phosphonamidates in combination with a discrete PEG24 chain to compensate for the hydrophobic PAB-exatecan moiety. Furthermore, we demonstrate that the identified linker-payload structure enables the construction of highly loaded DAR8 ADCs with excellent solubility properties. Head-to-head comparison with Enhertu, an approved camptothecin-based ADC, revealed improved target-mediated killing of tumor cells, excellent bystander killing, drastically improved linker stability in vitro and in vivo and superior in vivo efficacy over four tested dose levels in a xenograft model. Moreover, we show that ADCs based on the novel exatecan linker-payload platform exhibit antibody-like pharmacokinetic properties, even when the ADCs are highly loaded with eight drug molecules per antibody. This ADC platform constitutes a new and general solution to deliver TOP1 inhibitors with highest efficiency to the site of the tumor, independent of the antibody and its target, and is thereby broadly applicable to various cancer indications. [1]
|
| Molecular Formula |
C100H151FN9O36P
|
|---|---|
| Molecular Weight |
2105.3
|
| Exact Mass |
2103.99833
|
| CAS # |
2928571-43-9
|
| PubChem CID |
172653110
|
| Appearance |
White to off-white solid powder
|
| LogP |
-1.1
|
| Hydrogen Bond Donor Count |
9
|
| Hydrogen Bond Acceptor Count |
39
|
| Rotatable Bond Count |
90
|
| Heavy Atom Count |
147
|
| Complexity |
3780
|
| Defined Atom Stereocenter Count |
4
|
| SMILES |
CC[C@@]1(C2=C(COC1=O)C(=O)N3CC4=C5[C@H](CCC6=C5C(=CC(=C6C)F)N=C4C3=C2)NC(=O)OCC7=CC=C(C=C7)NC(=O)[C@H](CCCNC(=O)N)NC(=O)[C@H](C(C)C)NC(=O)C8=CC=C(C=C8)NP(=O)(C#C)OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO)O
|
| InChi Key |
KZEPGSKCAWPFGG-HTZDUXJFSA-N
|
| InChi Code |
InChI=1S/C100H151FN9O36P/c1-6-100(119)83-69-88-92-81(71-110(88)96(115)82(83)73-144-97(100)116)90-85(19-18-80-75(5)84(101)70-87(105-92)89(80)90)107-99(118)145-72-76-10-14-78(15-11-76)104-94(113)86(9-8-20-103-98(102)117)106-95(114)91(74(3)4)108-93(112)77-12-16-79(17-13-77)109-147(120,7-2)146-68-67-143-66-65-142-64-63-141-62-61-140-60-59-139-58-57-138-56-55-137-54-53-136-52-51-135-50-49-134-48-47-133-46-45-132-44-43-131-42-41-130-40-39-129-38-37-128-36-35-127-34-33-126-32-31-125-30-29-124-28-27-123-26-25-122-24-23-121-22-21-111/h2,10-17,69-70,74,85-86,91,111,119H,6,8-9,18-68,71-73H2,1,3-5H3,(H,104,113)(H,106,114)(H,107,118)(H,108,112)(H,109,120)
|
| Chemical Name |
[4-[[(2S)-5-(carbamoylamino)-2-[[(2S)-2-[[4-[[ethynyl-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phosphoryl]amino]benzoyl]amino]-3-methylbutanoyl]amino]pentanoyl]amino]phenyl]methyl N-[(10S,23S)-10-ethyl-18-fluoro-10-hydroxy-19-methyl-5,9-dioxo-8-oxa-4,15-diazahexacyclo[14.7.1.02,14.04,13.06,11.020,24]tetracosa-1,6(11),12,14,16,18,20(24)-heptaen-23-yl]carbamate
|
| Synonyms |
H9Q9Q9Z3PF; P5(PEG24)-VC-PAB-exatecan; 2928571-43-9
|
| 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: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture. |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
|
| Solubility (In Vitro) |
Typically soluble in DMSO (e.g. 10 mM)
|
|---|---|
| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 ：Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 0.4750 mL | 2.3750 mL | 4.7499 mL | |
| 5 mM | 0.0950 mL | 0.4750 mL | 0.9500 mL | |
| 10 mM | 0.0475 mL | 0.2375 mL | 0.4750 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.
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.
Products are for research use only; We do not sell to patients
Copyright 2020 InvivoChem LLC | All Rights Reserved
