Irinotecan

Catalog No.S1198 Batch:S119812

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Technical Data

Formula

C33H38N4O6

Molecular Weight 586.68 CAS No. 97682-44-5
Solubility (25°C)* In vitro DMSO 25 mg/mL (42.61 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
5% DMSO 95% Corn oil
0.5mg/ml Taking the 1 mL working solution as an example, add 50 μL of 10 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results. 
Clear solution
5%DMSO 40%PEG300 5%Tween80 50%ddH2O
6.0mg/ml Taking the 1 mL working solution as an example, add 50 μL of 120 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <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.)

Preparing Stock Solutions

Biological Activity

Description Irinotecan is a topoisomerase I inhibitor for LoVo cells and HT-29 cells with IC50 of 15.8 μM and 5.17 μM, respectively.
Targets
Topo I [1]
(LoVo, HT-29 cells)
In vitro Irinotecan is activated to SN-38 by carboxylesterases to become able to interact with its target, topoisomerase I. Irinotecan induces similar amounts of cleavable complexes at its IC50 in LoVo cells and HT-29 cell lines. SN-38 induces a concentration-dependent formation of cleavable complexes, which is not significantly different in LoVo cells and HT-29 cell lines. Cell accumulation of Irinotecan is markedly different, reaching consistently higher levels in HT-29 cells than in LoVo cells. [1] The lactone E-ring of Irinotecan and SN-38 hydrolyses reversibly in aqueous solutions, and the interconversion between the lactone and carboxylate forms is dependent on pH and temperature. Liver is primarily responsible for the activation of Irinotecan to SN-38. At equal concentrations of Irinotecan and SN-38 glucuronide, the rate of beta-glucuronidase-mediated SN-38 production is higher than that formed from Irinotecan in both tumour and normal tissue. [2] Irinotecan is also converted to SN-38 in intestines, plasma and tumor tissues. [3] Irinotecan is significantly more active in SCLC than in NSCLC cell lines, whereas no significant difference between histological types is observed with SN-38. [4]
In vivo In COLO 320 xenografts, Irinotecan induces a maximum growth inhibition of 92%. [5] A single dose of Irinotecan significantly increases amounts of topoisomerase I covalently bound to DNA in stomach, duodenum, colon and liver. Concomitantly, the Irinotecan-treated group shows significantly higher amounts of DNA strand breaks in colon mucosa cells compared to the control group. [6]
Features Irinotecan is a prodrug that is used to treat metastatic colorectal cancer.

Protocol (from reference)

Cell Assay:

[1]

  • Cell lines

    LoVo and HT-29 cells

  • Concentrations

    0 μM -100 μM

  • Incubation Time

    48 hours

  • Method

    Exponentially growing cells (LoVo and HT-29 cells) are seeded in 20 cm2 Petri dishes with an optimal cell number for each cell line (2 × 104 for LoVo cells, 105 for HT-29 cells). They are treated 2 days later with increasing concentrations of Irinotecan or SN-38 for one cell doubling time (24 hours for LoVo cells, 40 hours for HT-29 cells). After washing with 0.15 M NaCl, the cells are further grown for two doubling times in normal medium, detached from the support with trypsin-EDTA and counted in a hemocytometer. The IC50 values are then estimated as the Irinotecan or SN-38 concentrations responsible for 50% growth inhibition as compared with cells incubated without Irinotecan or SN-38.

Animal Study:

[5]

  • Animal Models

    Female nude mice with COLO 320 and WiDr xenografts

  • Dosages

    20 mg/kg

  • Administration

    Administered via i.p.

Customer Product Validation

, , Biomaterials, 2015, 72:74-89.

Data independently produced by Dr. Edita Aksamitiene from Thomas Jefferson University, , Dr. Mikhail Menshikov of Cardiology Research Center

Selleck's Irinotecan has been cited by 40 publications

In-situ cryo-immune engineering of tumor microenvironment with cold-responsive nanotechnology for cancer immunotherapy [ Nat Commun, 2023, 14(1):392] PubMed: 36693842
Metabolic classification suggests the GLUT1/ALDOB/G6PD axis as a therapeutic target in chemotherapy-resistant pancreatic cancer [ Cell Rep Med, 2023, 4(9):101162] PubMed: 37597521
Metabolic classification suggests the GLUT1/ALDOB/G6PD axis as a therapeutic target in chemotherapy-resistant pancreatic cancer [ Cell Rep Med, 2023, S2666-3791(23)00315-4] PubMed: 37597521
Thioparib inhibits homologous recombination repair, activates the type I IFN response, and overcomes olaparib resistance [ EMBO Mol Med, 2023, e16235.] PubMed: 36652375
TPX2 enhances the transcription factor activation of PXR and enhances the resistance of hepatocellular carcinoma cells to antitumor drugs [ Cell Death Dis, 2023, 14(1):64] PubMed: 36707511
Spatial and clonality-resolved 3D cancer genome alterations reveal enhancer-hijacking as a potential prognostic marker for colorectal cancer [ Cell Rep, 2023, 42(7):112778] PubMed: 37453058
Genetic assessment of pathogenic germline alterations in lysosomal genes among Asian patients with pancreatic ductal adenocarcinoma [ J Transl Med, 2023, 21(1):730] PubMed: 37848935
ATG4B and pS383/392-ATG4B serve as potential biomarkers and therapeutic targets of colorectal cancer [ Cancer Cell Int, 2023, 23(1):63] PubMed: 37038218
High CD142 Level Marks Tumor-Promoting Fibroblasts with Targeting Potential in Colorectal Cancer [ Int J Mol Sci, 2023, 24(14)11585] PubMed: 37511344
Dihydroergotamine ameliorates liver fibrosis by targeting transforming growth factor β type II receptor [ World J Gastroenterol, 2023, 29(20):3103-3118] PubMed: 37346154

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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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