LAQ824 (Dacinostat)

LAQ824 (Dacinostat)は一種の新たなHDAC阻害剤で、IC50値が 32 nMになって、p21プロモータ(promoter)を作動させます。

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LAQ824 (Dacinostat) 化学構造
分子量: 379.459




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製品説明 LAQ824 (Dacinostat)は一種の新たなHDAC阻害剤で、IC50値が 32 nMになって、p21プロモータ(promoter)を作動させます。
ターゲット HDAC
IC50 32 nM [1]
In vitro試験 LAQ824 activates the expression of the gene encoding the p21 cell cycle inhibitor by activating the p21 promoter with 50% of the maximal promoter activation (AC50) of 0.30 μM. LAQ824 inhibits the cell growth of both H1299, a non-small cell lung carcinoma line, and HCT116, a colon cancer cell line with IC50 of 0.15 μM and 0.01 μM, respectively, and the antiproliferative effect of LAQ824 is selective toward the tumor cell lines while inducing only growth arrest in normal fibroblasts. Furthermore, LAQ824 induces a dose-dependent increase of p21 protein in A549 cells and an increase in the hypophosphorylated state of the Rb tumor suppressor. [1] A recent study shows that LAQ824 induces chromatin changes at the level of the IL-10 gene promoter that lead to enhanced recruitment of the transcriptional repressors HDAC11 and PU.1 and inhibits IL-10 production in BALB/c murine macrophages. [2]
In vivo試験 In HCT116 and human colon tumor xenografts in nude mice, LAQ824 treatment at 100 mg/kg produces the inhibitory effects on tumor growth in a dose-dependent mode without general cytotoxicity. [1]

プロトコル (参考用のみ)

キナーゼアッセイ: [1]

In Vitro Histone Deacetylase Assay HDAC enzymes are partially purified from H1299 cell lysate by ion exchange chromatography using the Q Sepharose Fast Flow column. Enzyme complexes are collected from 500 mg of total cell lysate by immunoprecipitation with cdk2 polyclonal antibody or cdk1/cdc2 monoclonal antibody. Immunoprecipitates are resuspended in kinase buffer (50 mM Hepes, pH 8, 10 mM MgCl2, 2.5 mM EDTA, 1 mM dithiothreitol, 20 mM ATP, 10 mM β-glycerophosphate, 0.1 mM NaVO4, 1 mM sodium fluoride, 50 mM ATP, 10 μCi of [γ-32P]ATP) along with 1 μg of pRb recombinant protein substrate (cdk2) or 10 mL of H1 histone mixture containing 20 μg of substrate (cdc2). Phosphorylated Rb and H1 histone are resolved by electrophoresis and quantitated using a PhosphorImager.

細胞アッセイ: [1]

細胞株 H1299, HCT116, DU145, PC3 and MDA435 cells
濃度 0-10 μM
反応時間 48 hours
実験の流れ Cell proliferation is measured using an adaptation of published procedures (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxy-phenyl)-2-(4-sulfonyl)-2H-tetrazolium assay). The cells are seeded in 12-well dishes and cultured in RPMI 1640 containing 10% FBS. The cells are cultured in the presence of various concentrations of TSA (up to 1,000 ng/mL). To examine the growth inhibition by TSA, viable cell numbers are determined by trypan blue dye exclusion, counted in a Nesbauer-type hemocytometer for 0 hour, 24 hours, and 48 hours. The same amount of ethanol is added to the RPMI 1640 medium as the control experiment. All experiments are performed in duplicate and repeated 3 times The average background value (treatment with medium alone) is subtracted from each experimental well; triplicate values are averaged for each compound dilution. The following formulas are used to calculate the percentage of growth: If X0, %Growth=(X-T0)/T0*100; If X>T0, %Growth=(X-T0)/(GC-T0)*100. where T0 is the average value of T0 − background, GC is the average value of untreated cells (in triplicate) − background, and X is the average value of compound-treated cells (in triplicate)-background. The “% Growth” is plotted against compound concentration and used to calculate the IC50 using the linear regression techniques between data points to predict the concentration of compounds at 50% inhibition.

動物実験: [1]

動物モデル HCT116 cells is injected s.c. into the right axillary (lateral) region of outbred athymic (nu/nu) female mice.
製剤 LAQ824 is dissolved in DMSO.
投薬量 ≤100 mg/kg
投与方法 Administered via i.v.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDogMonkeyBaboon
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor361285201220
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)



Download LAQ824 (Dacinostat) SDF
分子量 379.459


CAS No. 404951-53-7
保管 3年-20℃
2年-80℃in solvent
別名 NVP-LAQ824
溶解度 (25°C) * In vitro DMSO 76 mg/mL (200.28 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
In vivo 1% DMSO+30% polyethylene glycol+1% Tween 80 30 mg/mL
* <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.
化学名 (E)-3-(4-(((2-(1H-indol-3-yl)ethyl)(2-hydroxyethyl)amino)methyl)phenyl)-N-hydroxyacrylamide

文献中の引用 (8)



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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID