Topotecan HCl

Catalog No.S1231 Batch:S123109

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Technical Data

Formula

C23H23N3O5.HCl

Molecular Weight 457.91 CAS No. 119413-54-6
Solubility (25°C)* In vitro DMSO 92 mg/mL (200.91 mM)
Water 92 mg/mL (200.91 mM)
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
Saline
30.0mg/ml Taking the 1 mL working solution as an example, add 30 mg of this product to 1 ml of physiological saline (0.9% NaCL solution), mix evenly to make it clear, 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 Topotecan HCl is a topoisomerase I inhibitor for MCF-7 Luc cells and DU-145 Luc cells with IC50 of 13 nM and 2 nM in cell-free assays, respectively. Topotecan HCl induces autophagy and apoptosis.
Targets
Topo I (DU-145 Luc cells) [1]
(Cell-free assay)
Topo I (MCF-7 Luc cells) [1]
(Cell-free assay)
2 nM 13 nM
In vitro

Stronger drug activity of Topotecan is observed for DU-145 Luc and MCF-7 Luc cells. [1] Topotecan causes cytotoxicity during the course of DNA replication by stabilizing the covalent complex between topoisomerase I and DNA and preventing the religation of enzyme-linked single-strand DNA break. Topotecan stabilizes topoisomerase I/DNA cleavable complexes in radiation-resistant human B-lineage acute lymphoblastic leukemia (ALL) cells, causes rapid apoptotic cell death despite high-level expression of bcl-2 protein, and inhibits ALL cell clonogenic growth in a dose-dependent fashion. [2]

In vivo

Animals inoculate s.c. with DU-145 Luc cells and then treated with Topotecan demonstrates significant tumor growth and regression as measured with calipers and luminescent imaging. The correlation coefficient is 0.75 for the control untreated group and 0.93 for the Topotecan-treated group. Similarly, tumor progression and regression are measurable using luminescent imaging for untreated and Topotecan-treated mice inoculated i.p. with MCF-7 Luc cells. [1] Topotecan elicited potent antileukemic activity in severe combined immune-deficiency (SCID) mouse models of human poor prognosis ALL. Topotecan markedly improved event-free survival of SCID mice challenged with otherwise fatal doses of humaln leukemia cells at systemic drug exposure levels. [2] Gliomas preferentially express TRAIL R2 and that treatment with Topotecan significantly up-regulates its expression. [3]

Features Topotecan is a water-soluble derivative of camptothecin.

Protocol (from reference)

Cell Assay:

[1]

  • Cell lines

    MCF-7 Luc and DU-145 Luc cells

  • Concentrations

    0 μg/mL - 0.692 μg/mL

  • Incubation Time

    96 hours

  • Method

    Topotecan is dissolved in sterile water to a stock concentration of 1 mg/mL, diluted to 6 μg/mL in cultured medium and then serially diluted 1:4 in opaque, white tissue culture-treated microplates to a final volume of 0.1 mL/well. MCF-7 Luc and DU-145 Luc cells are resuspended in 3×104 cells/mL in DMEM with high glucose containing 10% FBS and 0.5 mg/mL Geneticin; 100 μL of cells are added in each well. Plates are incubated for 4 days at 37 °C in 95% humidity/5% CO2. After incubation, 0.05 mL of 0.1 M HEPES buffer (pH 7.9) containing 50 μg/mL D-luciferin is added to each well. After incubation at room temperature for 10 minutes, the culture microplate is measured in a microplate luminometer and a molecular light imager. Results obtained with the microplate luminometer are calculated using no inhibition control wells without exogenous drug and maximum inhibition control wells containing ATP inhibitor. Results for the molecular light imager are similarly calculated using values obtained with a 5 minutes luminescent imager.

Animal Study:

[1]

  • Animal Models

    Mice with MCF-7 Luc or DU-145 Luc cells

  • Dosages

    0.25 mg/mL

  • Administration

    Administered via i.p.

Customer Product Validation

Data from [Data independently produced by PLoS Genet, 2014, 10(1), e1004107]

Data from [Data independently produced by , , BMC Cancer, 2015, 10.1186/s12885-015-1231-z]

Selleck's Topotecan HCl has been cited by 49 publications

EFNB1 levels determine distinct drug response patterns guiding precision therapy for B-cell neoplasms [ iScience, 2024, 27(1):108667] PubMed: 38155773
Deneddylation of ribosomal proteins promotes synergy between MLN4924 and chemotherapy to elicit complete therapeutic responses [ Cell Rep, 2023, 42(8):112925] PubMed: 37552601
p53 controls choice between apoptotic and non-apoptotic death following DNA damage [ bioRxiv, 2023, 2023.01.17.524444] PubMed: 36712034
FL118, acting as a 'molecular glue degrader', binds to dephosphorylates and degrades the oncoprotein DDX5 (p68) to control c-Myc, survivin and mutant Kras against colorectal and pancreatic cancer with high efficacy [ Clin Transl Med, 2022, 12(5):e881] PubMed: 35604033
Comprehensive drug response profiling and pan-omic analysis identified therapeutic candidates and prognostic biomarkers for Asian cholangiocarcinoma [ iScience, 2022, 25(10):105182] PubMed: 36248745
Secreted HSP90α-LRP1 Signaling Promotes Tumor Metastasis and Chemoresistance in Pancreatic Cancer [ Int J Mol Sci, 2022, 23(10)5532] PubMed: 35628341
Establishment and Characterization of NCC-PMP1-C1: A Novel Patient-Derived Cell Line of Metastatic Pseudomyxoma Peritonei [ J Pers Med, 2022, 12(2)258] PubMed: 35207746
Terfenadine resensitizes doxorubicin activity in drug-resistant ovarian cancer cells via an inhibition of CaMKII/CREB1 mediated ABCB1 expression [ Front Oncol, 2022, 12:1068443] PubMed: 36439493
Establishment and characterization of NCC-UPS4-C1: a novel cell line of undifferentiated pleomorphic sarcoma from a patient with Li-Fraumeni syndrome [ Hum Cell, 2022, 10.1007/s13577-022-00671-y] PubMed: 35118583
Ricolinostat suppresses proliferation, promotes apoptosis, and enhances the antiproliferative activity of topoisomerase inhibitors in cervical cancer cells [ Drug Dev Res, 2022, 10.1002/ddr.21999] PubMed: 36173896

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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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