Catalog No.S2244 Synonyms: HDAC-42
Molecular Weight(MW): 312.36
AR-42 is an HDAC inhibitor with IC50 of 30 nM. Phase 1.
3 Customer Reviews
One- to 2-month-old mice of both genotypes showed an increase in H3K4me3 (n = 5 to 6 per group) associated with a dose-dependent increase in neurogenesis in Kmt2d+/βGeo mice (monitored by normalized DCX expression) (n = 4 to 6 per group) upon treatment with the HDACi AR-42. There was no difference in either H3K4me3 or neurogenesis between Kmt2d+/βGeo and Kmt2d+/+ animals at a dose of 10 mg/kg per day.
Sci Transl Med 2014 6(256), 256ra135. AR-42 purchased from Selleck.
Colony formation assay showed significant inhibition following HB22.7 and AR42 treatment. Raji cells in semi-solid medium were treated with AR42 (0.25 uM), HB22.7 (0.4 ug/ml), or both. AR42 significantly inhibited anchorage-independent growth but the combination treatment further inhibited colony formation, *p<0.001.
Leuk Res 2014 8(11), 1320-6. AR-42 purchased from Selleck.
Purity & Quality Control
Choose Selective HDAC Inhibitors
Click to view more
2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
4. Orange "√" refers to compounds which do inhibitory effects on the related isoform, but without specific value.
|Description||AR-42 is an HDAC inhibitor with IC50 of 30 nM. Phase 1.|
|Features||Greater potency relative to SAHA.|
AR-42 treatment induces histone hyperacetylation and p21WAF/CIP1 overexpression, and inhibits the growth of DU-145 cells with IC50 of 0.11 μM.  HDAC42 is potent in suppressing the proliferation of U87MG and PC-3 cells, in part, because of its ability to down-regulate Akt signaling.  AR-42 inhibits the growth of PC-3 and LNCaP cells with IC50 of 0.48 μM and 0.3 μM, respectively. Compared to SAHA, AR-42 exhibits distinctly superior apoptogenic potency, and causes markedly greater decreases in phospho-Akt, Bcl-xL, and survivin in PC-3 cells.  AR-42 treatment induces growth inhibition, cell- cycle arrest, apoptosis, and activation of caspases-3/7 in malignant mast cell lines. AR-42 treatment induces down-regulation of Kit via inhibition of Kit transcription, disassociation between Kit and heat shock protein 90 (HSP90), and up-regulation of HSP70. AR-42 treatment down-regulates the expression of p-Akt, total Akt, phosphorylated STAT3/5 (pSTAT3/5), and total STAT3/5.  AR-42 potently inhibits the growth of JeKo-1, Raji, and 697 cells with IC50 of <0.61 μM. AR-42 also sensitizes CLL cells to TNF-Related Apoptosis Inducing Ligand (TRAIL), potentially through reduction of c-FLIP.  AR-42 treatment also induces autophagy through downregulation of Akt/mTOR signaling and inducing ER stress in hepatocellular carcinoma (HCC) cells. 
|In vivo||The growth of PC-3 tumor xenografts is suppressed by 52% and 67% after treatment with AR-42 at 25 mg/kg and 50 mg/kg, respectively, whereas SAHA at 50 mg/kg suppresses growth by 31%. In contrast to mice treated with SAHA, intratumoral levels of phospho-Akt and Bcl-xL are markedly reduced in AR-42 treated mice.  In the transgenic adenocarcinoma of the mouse prostate (TRAMP) model, administration of AR-42 not only decreases the severity of prostatic intraepithelial neoplasia (PIN) and completely prevents its progression to poorly differentiated carcinoma, but also shifts tumorigenesis to a more differentiated phenotype, suppressing absolute and relative urogenital tract weights by 86% and 85%, respectively.  AR-42 significantly reduces leukocyte counts, and prolongs survival in three separate mouse models of B-cell malignancy without evidence of toxicity. |
In vitro HDAC assay:HDAC activity is analyzed by using an HDAC assay kit. This assay is based on the ability of DU-145 nuclear extract, which is rich in HDAC activity, to mediate the deacetylation of the biotinylated [3H]-acetyl histone H4 peptide that is bound to streptavidin agarose beads. The release of [3H]-acetate into the supernatant is measured to calculate the HDAC activity. Sodium butyrate (0.25-1 mM) is used as a positive control.
-  Lu Q, et al. J Med Chem, 2005, 48(17), 5530-5535.
-  Chen CS, et al. J Biol Chem, 2005, 280(46), 38879-38887.
-  Kulp SK, et al. Clin Cancer Res, 2006, 12(17), 5199-5206.
|In vitro||DMSO||63 mg/mL (201.69 mM)|
|Ethanol||63 mg/mL (201.69 mM)|
|In vivo||0.5% methylcellulose+0.2% 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.
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).
Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
Enter the chemical formula of a compound to calculate its molar mass and elemental composition:
Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2
Instructions to calculate molar mass (molecular weight) of a chemical compound:
To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT02795819||Suspended||Renal Cell Carcinoma|Soft Tissue Sarcoma|Metastatic Disease||Virginia Commonwealth University|Arno Therapeutics|National Cancer Institute (NCI)||July 2016||Phase 1|
|NCT02569320||Recruiting||Recurrent Plasma Cell Myeloma||Yvonne Efebera|Celgene|Ohio State University Comprehensive Cancer Center||May 2016||Phase 1|
|NCT02282917||Recruiting||Vestibular Schwannoma|Meningioma|Acoustic Neuroma|Neurofibromatosis Type 2||Massachusetts Eye and Ear Infirmary|Johns Hopkins University|Mayo Clinic|Stanford University|Ohio State University|Nationwide Childrens Hospital||September 2015||Early Phase 1|
|NCT01129193||Active, not recruiting||Adult Nasal Type Extranodal NK/T-cell Lymphoma|Anaplastic Large Cell Lymphoma|Angioimmunoblastic T-cell Lymphoma|Cutaneous B-cell Non-Hodgkin Lymphoma|Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue|Hepatosplenic T-cell Lymphoma|Intraocular Lymphoma|Nodal Marginal Zone B-cell Lymphoma|Peripheral T-cell Lymphoma|Post-transplant Lymphoproliferative Disorder|Prolymphocytic Leukemia|Recurrent Adult Burkitt Lymphoma|Recurrent Adult Diffuse Large Cell Lymphoma|Recurrent Adult Diffuse Mixed Cell Lymphoma|Recurrent Adult Diffuse Small Cleaved Cell Lymphoma|Recurrent Adult Grade III Lymphomatoid Granulomatosis|Recurrent Adult Hodgkin Lymphoma|Recurrent Adult Immunoblastic Large Cell Lymphoma|Recurrent Adult Lymphoblastic Lymphoma|Recurrent Adult T-cell Leukemia/Lymphoma|Recurrent Cutaneous T-cell Non-Hodgkin Lymphoma|Recurrent Grade 1 Follicular Lymphoma|Recurrent Grade 2 Follicular Lymphoma|Recurrent Grade 3 Follicular Lymphoma|Recurrent Mantle Cell Lymphoma|Recurrent Marginal Zone Lymphoma|Recurrent Mycosis Fungoides/Sezary Syndrome|Recurrent Small Lymphocytic Lymphoma|Refractory Chronic Lymphocytic Leukemia|Refractory Multiple Myeloma|Stage III Adult Burkitt Lymphoma|Stage III Adult Diffuse Large Cell Lymphoma|Stage III Adult Diffuse Mixed Cell Lymphoma|Stage III Adult Diffuse Small Cleaved Cell Lymphoma|Stage III Adult Hodgkin Lymphoma|Stage III Adult Immunoblastic Large Cell Lymphoma|Stage III Adult Lymphoblastic Lymphoma|Stage III Adult T-cell Leukemia/Lymphoma|Stage III Chronic Lymphocytic Leukemia|Stage III Cutaneous T-cell Non-Hodgkin Lymphoma|Stage III Grade 1 Follicular Lymphoma|Stage III Grade 2 Follicular Lymphoma|Stage III Grade 3 Follicular Lymphoma|Stage III Mantle Cell Lymphoma|Stage III Marginal Zone Lymphoma|Stage III Multiple Myeloma|Stage III Mycosis Fungoides/Sezary Syndrome|Stage III Small Lymphocytic Lymphoma|Stage IV Adult Burkitt Lymphoma|Stage IV Adult Diffuse Large Cell Lymphoma|Stage IV Adult Diffuse Mixed Cell Lymphoma|Stage IV Adult Diffuse Small Cleaved Cell Lymphoma|Stage IV Adult Hodgkin Lymphoma|Stage IV Adult Immunoblastic Large Cell Lymphoma|Stage IV Adult Lymphoblastic Lymphoma|Stage IV Adult T-cell Leukemia/Lymphoma|Stage IV Chronic Lymphocytic Leukemia|Stage IV Cutaneous T-cell Non-Hodgkin Lymphoma|Stage IV Grade 1 Follicular Lymphoma|Stage IV Grade 2 Follicular Lymphoma|Stage IV Grade 3 Follicular Lymphoma|Stage IV Mantle Cell Lymphoma|Stage IV Marginal Zone Lymphoma|Stage IV Mycosis Fungoides/Sezary Syndrome|Stage IV Small Lymphocytic Lymphoma|Testicular Lymphoma|Waldenstrom Macroglobulinemia||Craig Hofmeister|National Cancer Institute (NCI)|Arno Therapeutics|Ohio State University Comprehensive Cancer Center||May 2010||Phase 1|
|NCT01798901||Active, not recruiting||Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities|Adult Acute Myeloid Leukemia With Del(5q)|Adult Acute Myeloid Leukemia With Inv(16)(p13;q22)|Adult Acute Myeloid Leukemia With t(15;17)(q22;q12)|Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)|Adult Acute Myeloid Leukemia With t(8;21)(q22;q22)|Recurrent Adult Acute Myeloid Leukemia|Recurrent Childhood Acute Myeloid Leukemia|Secondary Acute Myeloid Leukemia|Untreated Adult Acute Myeloid Leukemia||Alison Walker|Ohio State University Comprehensive Cancer Center||September 17, 2013||Phase 1|
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.
Tel: +1-832-582-8158 Ext:3
If you have any other enquiries, please leave a message.