PX-12

Synonyms: DB05448, 1-methyl propyl 2-imidazolyl disulfide

PX-12 (DB05448, 1-methyl propyl 2-imidazolyl disulfide) is a potent thioredoxin-1 (Trx-1) inhibitor by irreversibly thioalkylation of Cys73 of Trx-1. Phase 2.

PX-12 Chemical Structure

PX-12 Chemical Structure

CAS No. 141400-58-0

Purity & Quality Control

PX-12 Related Products

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
T84 Function assay 3 hrs Inhibition of human recombinant thioredoxin-mediated TG2 activation expressed in T84 cells assessed as blockade of 5-biotinamidopentylamine incorporation after 3 hrs by fluorescence microscopic analysis, IC50=2.11μM 23327656
MEF Cytotoxicity assay Cytotoxicity against mouse MEF cells, LD50=2.7μM 22128876
Ramos Cytotoxicity assay 72 hrs Cytotoxicity against human Ramos cells after 72 hrs by MTT assay, LD50=3.4μM 22128876
PancO2 Cytotoxicity assay 72 hrs Cytotoxicity against mouse PancO2 cells after 72 hrs by crystal violet staining, LD50=3.9μM 22128876
T24 Cytotoxicity assay 72 hrs Cytotoxicity against human T24 cells after 72 hrs by crystal violet staining, LD50=4.6μM 22128876
B78 Cytotoxicity assay 72 hrs Cytotoxicity against mouse B78 cells after 72 hrs by crystal violet staining, LD50=5μM 22128876
CT26 Cytotoxicity assay 72 hrs Cytotoxicity against wild type mouse CT26 cells after 72 hrs by crystal violet staining, LD50=5.2μM 22128876
K562 Cytotoxicity assay 72 hrs Cytotoxicity against human K562 cells after 72 hrs by MTT assay, LD50=5.5μM 22128876
M21 Antiproliferative assay Antiproliferative activity against human M21 cells, GI50=8.3μM 18502639
MCF7 Antiproliferative assay Antiproliferative activity against human MCF7 cells, GI50=8.3μM 18502639
MCF7 Antiproliferative assay 48 hrs Antiproliferative activity against human MCF7 cells after 48 hrs by sulforhodamine B method, GI50=8.3μM 18617414
M21 Antiproliferative assay 48 hrs Antiproliferative activity against human M21 cells after 48 hrs by sulforhodamine B method, GI50=8.3μM 18617414
Raji Cytotoxicity assay 72 hrs Cytotoxicity against human Raji cells after 72 hrs by MTT assay, LD50=8.8μM 22128876
EMT6 Cytotoxicity assay 72 hrs Cytotoxicity against mouse EMT6 cells after 72 hrs by crystal violet staining, LD50=11.6μM 22128876
HT29 Antiproliferative assay Antiproliferative activity against human HT29 cells, GI50=25μM 18502639
HT29 Antiproliferative assay 48 hrs Antiproliferative activity against human HT29 cells after 48 hrs by sulforhodamine B method, GI50=25μM 18617414
M21 Function assay 25 nM 16 hrs Stimulation of nuclear translocation of thioredoxin-1 from cytosol in human M21 cells at 25 nM after 16 hrs by immunocytofluorescence 18617414
Raji Function assay 5 to 10 uM 4 to 24 hrs Induction of Trx mRNA expression in human Raji cells at 5 to 10 uM after 4 to 24 hrs by RT-PCR analysis 22128876
Raji Function assay 10 to 20 uM 4 to 8 hrs Induction of Trx protein expression in human Raji cells at 10 to 20 uM after 4 to 8 hrs by Western blot analysis 22128876
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
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
LAN-5 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 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
NB1643 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for NB1643 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
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
Rh41 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 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
Click to View More Cell Line Experimental Data

Biological Activity

Description PX-12 (DB05448, 1-methyl propyl 2-imidazolyl disulfide) is a potent thioredoxin-1 (Trx-1) inhibitor by irreversibly thioalkylation of Cys73 of Trx-1. Phase 2.
Targets
Trx-1 [1]
In vitro
In vitro In MCF-7 and HT-29 cells, PX-12 prevents the hypoxia (1% oxygen)-induced increase in HIF-1alpha protein, and decreases HIF-1-trans-activating activity, VEGF formation, and inducible nitric oxide synthase. PX-12 also inhibits the growth of MCF-7 and HT-29 cells with IC50s of 1.9 μM and 2.9μM, respectively. [1] PX-12 also inhibits HIF-1α protein levels through an Nrf2/PMF-1-mediated increase. [2] In A549 cells, PX-12 inhibits cell growth via G2/M phase arrest, and Bax-mediated and ROS-dependent apoptosis. [3] In hepatocelluar carcinoma cells, PX-12 exerts a synergistic effect with 5-FU to significantly suppress tumorigenicity. [4]
Cell Research Cell lines MCF-7 and HT-29 cells
Concentrations ~10 μM
Incubation Time 72 h
Method Cell growth is measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Cells are exposed to a range of concentrations of PX-12 or pleurotin for 16 h in air or hypoxia (1% oxygen). The cells are then washed with warm drug-free medium and grown in air for the remainder of the 72-h incubation.
In Vivo
In vivo In mice bearing MCF-7 tumor xenografts, PX-12 (12 mg/kg, i.p.) decreases HIF-1α and VEGF protein levels and microvessel density. [1]
Animal Research Animal Models Mice bearing MCF-7 tumor xenografts
Dosages 12 mg/kg
Administration i.p.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00736372 Completed
Metastatic Cancer|Advanced Cancer
Cascadian Therapeutics Inc.|Seagen Inc.
June 2008 Phase 1
NCT00417287 Terminated
Pancreatic Neoplasms
Cascadian Therapeutics Inc.|National Cancer Institute (NCI)|Translational Genomics Research Institute|Seagen Inc.
December 2006 Phase 2

Chemical Information & Solubility

Molecular Weight 188.31 Formula

C7H12N2S2

CAS No. 141400-58-0 SDF Download PX-12 SDF
Smiles CCC(C)SSC1=NC=CN1
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 38 mg/mL ( (201.79 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 38 mg/mL

Water : Insoluble


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In vivo
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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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