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Topotecan HCl Topoisomerase inhibitor

Name: Topotecan HCl
Brand: Selleck Chemicals
SKU: S1231
Availability: InStock
Rating: 5 (58 reviews)

Cat.No.S1231

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. This compound induces autophagy and apoptosis.

Chemical Structure

Molecular Weight: 457.91

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Quality Control

Batch: Purity: 99.98%

99.98

Related Targets	HDAC PARP ATM/ATR DNA-PK WRN DNA/RNA Synthesis PPAR Sirtuin Casein Kinase eIF
Other Topoisomerase Inhibitors	Camptothecin (CPT) Betulinic acid Beta-Lapachone (S)-10-Hydroxycamptothecin Amonafide Ellagic acid Voreloxin (SNS-595) hydrochloride Cu(II)-Elesclomol Hydroxy Camptothecine Rubitecan

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
human MDA-MB-435 cells	Cytotoxic assay		72 h	Cytotoxicity against human MDA-MB-435 cells after 72 hrs by MTT assay, ic50=1 nM	20371183
human Bel7402 cells	Cytotoxic assay		96 h	Cytotoxicity against human Bel7402 cells after 96 hrs by MTT assay, IC50=1.2 nM	15165144
human HCT8 cells	Cytotoxic assay		96 h	Cytotoxicity against human HCT8 cells after 96 hrs by MTT assay, IC50=1.5 nM	15165144
human MCF7 cells	Cytotoxic assay		96 h	Cytotoxicity against human MCF7 cells after 96 hrs by MTT assay, IC50=1.8 nM	15165144
human A549 cells	Cytotoxic assay		96 h	Cytotoxicity against human A549 cells after 96 hrs by MTT assay, IC50=3.2 nM	15165144
human colon carcinoma SW620 cell	Cytotoxic assay			Cytotoxic potentiation of Topotecan (TP) by the compound in human colon carcinoma SW620 cell line, IC50=3.2 nM	12408707
human MESSA cells	Cytotoxic assay		72 h	Cytotoxicity against human MESSA cells after 72 hrs by alamar blue assay, IC50=4 nM	21341674
human BGC823 cells	Cytotoxic assay		96 h	Cytotoxicity against human BGC823 cells after 96 hrs by MTT assay, IC50=4.3 nM	15165144
human Ketr3 cells	Cytotoxic assay		96 h	Cytotoxicity against human Ketr3 cells after 96 hrs by MTT assay, IC50=4.9 nM	15165144
LOX cells	Cytotoxic assay			Cytotoxicity was determined in vitro in LOX cells (melanoma) of human tumor cell lines by using MTT assay, IC50=5 nM	7853331
human A549 cells	Function assay		4 h	Antitumor activity against human A549 cells after 4 hrs by MTT assay, IC50=5 nM	18207748
human H69 cells	Cytotoxic assay		72 h	Cytotoxicity against human H69 cells after 72 hrs by alamar blue assay, IC50=6 nM	21341674
human A2780 cells	Cytotoxic assay		72 h	Cytotoxicity against human A2780 cells overexpressing alpha5beta3 integrin assessed as cell survival after 72 hrs by SRB assay, IC50=6 nM	22959246
human LNCAP cells	Cytotoxic assay		72 h	Cytotoxicity against human LNCAP cells after 72 hrs by alamar blue assay, IC50=9 nM	21341674
human HOP62 cells	Growth inhibition assay			Growth inhibition of human HOP62 cells by five-dose growth inhibition assay, IC50=10 nM	25909279
human MCF7 cells	Growth inhibition assay			Growth inhibition of human MCF7 cells by five-dose growth inhibition assay, IC50=10 nM	25909279
human UACC62 cells	Growth inhibition assay			Growth inhibition of human UACC62 cells by five-dose growth inhibition assay, IC50=10 nM	25909279
human DU145 cells	Growth inhibition assay			Growth inhibition of human DU145 cells by five-dose growth inhibition assay, IC50=10 nM	25909279
LoVo cell line	Cytotoxic assay			Cytotoxic potentiation of Topotecan (TP) by the compound in (human colorectal cancer LoVo cell line, IC50=11.6 nM	12408707
human lymphoblast tumor cell line RPM18402	Cytotoxic assay			Cytotoxicity against human lymphoblast tumor cell line RPM18402, IC50=12 nM	12392745
human HL60 cells	Function assay			Antitumor activity against human HL60 cells by SRB method, IC50=12 nM	19541483
human A375 cells	Cytotoxic assay		72 h	Cytotoxicity against human A375 cells after 72 hrs by alamar blue assay, IC50=13 nM	21341674
COR-L23/P cell	Cytotoxic assay			Cytotoxicity measured using the COR-L23 parental (COR-L23/P) human non small cell lung carcinoma cell line, IC50=13.2 nM	11806724
human NCI-H460 cells	Proliferation assay		72 h	Antiproliferative activity against human NCI-H460 cells after 72 hrs by coulter counter analysis, IC50=16 nM	21783369
human MOLT4 cells	Cytotoxic assay		72 h	Cytotoxicity against human MOLT4 cells after 72 hrs by MTT assay, IC50=19 nM	24900725
human LoVo cells	Cytotoxic assay		72 h	Cytotoxicity against human LoVo cells after 72 hrs by MTT assay, IC50=20 nM	20371183
RPM18402 tumor cell line	Proliferation assay			Concentration required to inhibit cell proliferation in RPM18402 tumor cell line, IC50=20 nM	15482929
human SN12C cells	Growth inhibition assay			Growth inhibition of human SN12C cells by five-dose growth inhibition assay, GI50=20 nM	25909279
human RPMI8226 cells	Cytotoxic assay			Cytotoxicity against human RPMI8226 cells by MTT method, IC50=21 nM	19012996
HT-29 cells	Cytotoxic assay			Cytotoxicity was determined in vitro in HT-29 cells(colon) of human tumor cell lines by using MTT assay, IC50=25 nM	7853331
SK-BR-3 cells	Cytotoxic assay			In Vitro cytotoxicity against human breast cancer cell line (SK-BR-3), IC50=26 nM	11334569
HeLa cells	Growth inhibition assay			Growth inhibition of HeLa cells after 4 days, GI50=30 nM	17418582
UACC 62 cells	Cytotoxic assay			Tested in vitro for cytotoxicity against human tumor cell line UACC 62 (melanoma), GI50=30 nM	10714502
human HCT116 cells	Growth inhibition assay			Growth inhibition of human HCT116 cells by five-dose growth inhibition assay, GI50=30 nM	25909279
human lung cancer cell line (H128)	Cytotoxic assay			In Vitro cytotoxicity against human lung cancer cell line (H128), IC50=31 nM	11334569
human MES-SA/Dx5 cells	Cytotoxic assay			Cytotoxicity against human MES-SA/Dx5 cells overexpressing MDR1 after 72 hrs by alamar blue assay, IC50=33 nM	21341674
human A2780 cells	Cytotoxic assay		72 h	Cytotoxicity against human A2780 cells after 72 hrs by MTT assay, IC50=33 nM	24900725
human MDA-MB-435 cells	Cytotoxic assay		72 h	Cytotoxicity against human MDA-MB-435 cells incubated for 72 hrs by MTT assay, GI50=34 nM	22867019
human stomach cancer cell line (MKN45)	Cytotoxic assay			In Vitro cytotoxicity against human stomach cancer cell line (MKN45), IC50=38 nM	11334569
human KB3-1 cells	Cytotoxic assay			Cytotoxicity against human KB3-1 cells after MTT assay, IC50=40 nM	18829334
mouse P388 cells	Cytotoxic assay			Cytotoxicity against mouse P388 cells after MTT assay, IC50=45 nM	18829334
A427 human lung carcinoma	Proliferation assay			Antiproliferative activity measured against A427 human lung carcinoma, IC50=49 nM	9876111
human U251 cells	Function assay		6-24 h	Inhibition of topoisomerase-1 in human U251 cells assessed as inhibition of hypoxia-induced HIF-1alpha accumulation in nuclear extract after 6 to 24 hrs by immunoblot analysis, EC50=54 nM	22305612
human colon cancer cell line (WiDr)	Cytotoxic assay			In Vitro cytotoxicity against human colon cancer cell line (WiDr), IC50=56 nM	11334569
human HepG2 cells	Cytotoxic assay		4 days	Cytotoxicity against human HepG2 cells after 4 days by MTT assay, IC50=60 nM	18554906
human KB cells	Cytotoxic assay		72 h	Cytotoxicity against human KB cells after 72 hrs sulforhodamine B colorimetric assay, IC50=62.5 nM	25008456
human HCT8 cells	Cytotoxic assay		3 days	Cytotoxicity against human HCT8 cells after 3 days by MTT assay, IC50=70 nM	20392545
human GBM2 cells	Proliferation assay		72 h	Antiproliferative activity against human GBM2 cells assessed as reduction in cell viability incubated for 72 hrs by WST-1 method, IC50=0.13 μM	26355532
SK-MEL-2 cells	Cytotoxic assay		72 h	Cytotoxicity against human SK-MEL-2 cells after 72 hrs by alamar blue assay, IC50=0.14 μM	21341674
human IGROV1 cells	Cytotoxic assay		72 h	Cytotoxicity against human IGROV1 cells after 72 hrs by alamar blue assay, IC50=0.16 μM	21341674
human U87 cells	Proliferation assay		48 h	Antiproliferative activity against human U87 cells assessed as growth inhibition after 48 hrs by MTT assay, IC50=0.16 μM	24826818
human HT1080 cells	Proliferation assay		48 h	Antiproliferative activity against human HT1080 cells assessed as growth inhibition incubated for 48 hrs by sulforhodamine B assay, IC50=0.18 μM	26408815
human Hep3B cells	Proliferation assay		72 h	Antiproliferative activity against human Hep3B cells after 72 hrs by XTT assay, GI50=0.22 μM	19796956
human GBM3 cells	Proliferation assay		72 h	Antiproliferative activity against human GBM3 cells assessed as reduction in cell viability incubated for 72 hrs by WST-1 method, IC50=0.38 μM	26355532
human KBVIN cells	Cytotoxic assay		72 h	Cytotoxicity against human KBVIN cells after 72 hrs by SRB assay, IC50=0.4 μM	25438769
human GBM1 cells	Proliferation assay		72 h	Antiproliferative activity against human GBM1 cells assessed as reduction in cell viability incubated for 72 hrs by WST-1 method, IC50=0.46 μM	26355532
human U937 cells	Cytotoxic assay		48 h	Cytotoxicity against human U937 cells expressing p53 mutant after 48 hrs by SRB assay ， IC50=1.1 μM	19715319
Caco2	Cytotoxicity assay		24 hrs	Cytotoxicity against human Caco2 cells after 24 hrs by MTT assay, IC50=0.119μM.	24980118
Jurkat	Cytotoxicity assay		24 hrs	Cytotoxicity against human Jurkat cells after 24 hrs by MTT assay, IC50=0.127μM.	24980118
A375	Cytotoxicity assay		24 hrs	Cytotoxicity against human A375 cells after 24 hrs by MTT assay, IC50=0.162μM.	24980118
HeLa	Cytotoxicity assay		24 hrs	Cytotoxicity against human HeLa cells after 24 hrs by MTT assay, IC50=0.38μM.	24980118
MDA-MB-231	Cytotoxicity assay		24 hrs	Cytotoxicity against human MDA-MB-231 cells after 24 hrs by MTT assay, IC50=0.473μM.	24980118
NCI-H460	Antiproliferative assay		1 hr	Antiproliferative activity against human NCI-H460 cells after short term exposure for 1 hr measured after 72 hrs in drug-free medium, IC50=0.61μM.	19530720
HCT8	Antiproliferative assay		48 hrs	Antiproliferative activity against human HCT8 cells after 48 hrs by CCK8 assay, IC50=1.875μM.	25481395
KB	Antiproliferative assay		48 hrs	Antiproliferative activity against human KB cells after 48 hrs by CCK8 assay, IC50=2.282μM.	25481395
SGC7901	Antiproliferative assay		48 hrs	Antiproliferative activity against human SGC7901 cells after 48 hrs by CCK8 assay, IC50=2.292μM.	25481395
HepG2	Antiproliferative assay		48 hrs	Antiproliferative activity against human HepG2 cells after 48 hrs by CCK8 assay, IC50=4.208μM.	25481395
MDA-MB-231	Apoptosis assay			Induction of apoptosis in human MDA-MB-231 cells assessed as p53 phosphorylation at Ser15 by Western blotting analysis	24980118
HeLa	Apoptosis assay	0.8 to 1.6 uM	24 hrs	Induction of apoptosis in human HeLa cells assessed as inhibition of DNA synthesis at 0.8 to 1.6 uM after 24 hrs by BrdU staining-based ELISA	24980118
MDA-MB-231	Apoptosis assay	0.8 to 1.6 uM	24 hrs	Induction of apoptosis in human MDA-MB-231 cells assessed as inhibition of DNA synthesis at 0.8 to 1.6 uM after 24 hrs by BrdU staining-based ELISA	24980118
A375	Apoptosis assay	0.8 to 1.6 uM	24 hrs	Induction of apoptosis in human A375 cells assessed as inhibition of DNA synthesis at 0.8 to 1.6 uM after 24 hrs by BrdU staining-based ELISA	24980118
Caco2	Apoptosis assay	0.8 to 1.6 uM	24 hrs	Induction of apoptosis in human Caco2 cells assessed as inhibition of DNA synthesis at 0.8 to 1.6 uM after 24 hrs by BrdU staining-based ELISA	24980118
A375	Apoptosis assay			Induction of apoptosis in human A375 cells assessed as p53 phosphorylation at Ser15 by Western blotting analysis	24980118
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
SK-N-MC	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
NB-EBc1	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Saos-2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells	29435139
LAN-5	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
Rh18	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells	29435139
OHS-50	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for NB1643 cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for A673 cells)	29435139
SK-N-MC	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-MC cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-12 cells	29435139
LAN-5	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for LAN-5 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for DAOY cells	29435139
NB-EBc1	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for NB-EBc1 cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SJ-GBM2 cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-37 cells	29435139
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for TC32 cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for MG 63 (6-TG R) cells	29435139
U-2 OS	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for U-2 OS cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for RD cells	29435139
Rh18	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh18 cells	29435139
Rh30	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh30 cells	29435139
Saos-2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Saos-2 cells	29435139
OHS-50	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for OHS-50 cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-SH cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for SK-N-SH cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for SJ-GBM2 cells	29435139
Daoy	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for Daoy cells	29435139
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D caspase screen for TC32 cells	29435139
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for TC32 cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for MG 63 (6-TG R) cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Orthogonal 3D viability screen for RD cells	29435139
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 91 mg/mL (198.72 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 91 mg/mL

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	Saline Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	30.000mg/ml (65.52mM)	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.

In vivo Formulation Calculator (Clear solution)

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Average weight of animals: g

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
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Chemical Information, Storage & Stability

Molecular Weight	457.91	Formula	C₂₃H₂₃N₃O₅.HCl	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	119413-54-6	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	Nogitecan HCl, SKFS 104864A, NSC 609699			Smiles	CCC1(C2=C(COC1=O)C(=O)N3CC4=CC5=C(C=CC(=C5CN(C)C)O)N=C4C3=C2)O.Cl

Mechanism of Action

Features	Topotecan is a water-soluble derivative of camptothecin.
Targets/IC₅₀/Ki	Topo I (DU-145 Luc cells) (Cell-free assay) 2 nM Topo I (MCF-7 Luc cells) (Cell-free assay) 13 nM
In vitro	Stronger drug activity of Topotecan HCl is observed for DU-145 Luc and MCF-7 Luc cells. This compound 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. It 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.
In vivo	Animals inoculate s.c. with DU-145 Luc cells and then treated with Topotecan HCl 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 this compound-treated group. Similarly, tumor progression and regression are measurable using luminescent imaging for untreated and this chemical-treated mice inoculated i.p. with MCF-7 Luc cells. This compound elicited potent antileukemic activity in severe combined immune-deficiency (SCID) mouse models of human poor prognosis ALL. It markedly improved event-free survival of SCID mice challenged with otherwise fatal doses of humaln leukemia cells at systemic drug exposure levels. Gliomas preferentially express TRAIL R2 and that treatment with this chemical significantly up-regulates its expression.
References	[1] https://pubmed.ncbi.nlm.nih.gov/12960742/ [2] https://pubmed.ncbi.nlm.nih.gov/7742543/ [3] https://pubmed.ncbi.nlm.nih.gov/15719269/ [4] https://pubmed.ncbi.nlm.nih.gov/22689924/ [5] https://pubmed.ncbi.nlm.nih.gov/9523734/

Applications

Methods	Biomarkers	Images	PMID
Western blot	LC3 / p62 p53 / sesn2 / p-AMPK		23024792
Growth inhibition assay	Cell viability		28544814

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT04455139	Terminated	Eye Cancer Retinoblastoma	Prof. Beck Popovic Maja\|University of Lausanne Hospitals	November 15 2021	Phase 2
NCT05083000	Unknown status	COVID-19 Respiratory Infection	National University Hospital Singapore\|Christian Medical College Vellore India	August 16 2021	Phase 1
NCT04156347	Active not recruiting	Retinoblastoma	Targeted Therapy Technologies LLC	June 16 2021	Phase 1
NCT04428879	Recruiting	Retinoblastoma	The Hospital for Sick Children	June 16 2020	Phase 1

Tech Support

Handling Instructions

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Frequently Asked Questions

Question 1:
I would like to get it for mice intraperitoneally injection. What would you recommend to improve solubility? What could I use as solvent (%v?) that is nontoxic (unlike Methanol) and could be injected into mice intraperitoneally?

Answer:
It is generally prepared by Saline for I.P. administration.

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