product name LMK-235
Description: LMK-235 is a selective inhibitor of HDAC4 and HDAC5 with IC50 of 11.9 nM and 4.2 nM, respectively. LMK235 showed similar effects compared to vorinostat on inhibition of cellular HDACs in a pan-HDAC assay but enhanced cytotoxic effects against the human cancer cell lines A2780, Cal27, Kyse510, and MDA-MB231. LMK235 shows nanomolar inhibition of HDAC4 and HDAC5, whereas vorinostat and TSA inhibit HDAC4 and HDAC5 in the higher micromolar range. In contrast to vorinostat, LMK235 showed a novel HDAC isoform selectivity profile with preference for HDAC4 and HDAC5, which are inhibited with low nanomolar IC50 values.
References: J Med Chem. 2013 Jan 24;56(2):427-36; Eur J Med Chem. 2014 Jul 23;82:204-13.
294.35
Formula
C15H22N2O4
CAS No.
1418033-25-6
Storage
-20℃ for 3 years in powder form
-80℃ for 2 years in solvent
Solubility (In vitro)
DMSO: 58 mg/mL (197.0 mM)
Water: <1 mg/mL
Ethanol: 58 mg/mL (197.0 mM)
Solubility (In vivo)
Synonyms
other peoduct :References PubMed ID：:http://www.ncbi.nlm.nih.gov/pubmed/19424646
| In Vitro |
In vitro activity: LMK-235 causes HDAC inhibition with IC50 of <1 μM in human cancer cell lines with different sensitivity towards cisplatin. In breast cancer cell line MDA-MB-231, tongue cancer cell line Cal27, and esophagus cell line Kyse510 cell line, LMK-235 displays a high cytotoxicity, and markedly enhances the cytotoxicity of cisplatin. In addition, LMK-235 also shows nanomolar activity against multiple malaria parasite life cycle stages. Kinase Assay: The in vitro inhibitory activity of compounds against seven human HDAC isoforms (1, 2, 4 C2A, 5 C2A, 6, 8, and 11) are performed with a fluorescent based assay according to the company’s standard operating procedure. The IC50 values are determined using 10 different concentrations with 3-fold serial dilution starting at 10 μM. TSA and vorinostat are used as reference compounds. Cell Assay: The rate of cell survival under the action of test substances is evaluated by an improved MTT assay. The assay is based on the ability of viable cells to metabolize yellow MTT to violet formazan that can be detected spectrophotometrically. In brief, A2780, Cal27, Kyse510, and MDA-MB-231 cell lines are seeded at a density of 5000, 7000, 8000, and 10 000 cells/well in 96-well plates. After 24 h, cells are exposed to increased concentrations of the test compounds. Incubation is ended after 72 h, and cell survival is determined by addition of MTT solution (5 mg/mL in phosphate buffered saline). The formazan precipitate is dissolved in DMSO. Absorbance s measured at 544 and 690 nm in a FLUOstar microplate reader. |
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| In Vivo | In a mouse in-vivo study, synergistic inhibition was demonstrated for LMK235 and Cytarabine in proliferation assays and in colony formation assays. These findings demonstrate that in vivo RNAi screening for therapeutic efficacy is feasible. HDAC4 might be an important target to enhance efficacy of anti-leukemic drugs. |
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| Formulation & Dosage | |
| References | J Med Chem. 2013 Jan 24;56(2):427-36; Eur J Med Chem. 2014 Jul 23;82:204-13. |
