For research use only. Not for use in humans.
Molecular Weight(MW): 721.86
Tubacin is a highly potent and selective, reversible, cell-permeable HDAC6 inhibitor with an IC50 of 4 nM in a cell-free assay, approximately 350-fold selectivity over HDAC1.
Selleck's Tubacin has been cited by 16 publications
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Inhibition of HDAC6 by tubacin induced the acetylation and membrane translocation of wild-type PTEN, but not K163R mutant. U-87 MG or NCl-H1650 cells were transfected with EGFP-PTEN or EGFP-PTEN-K163R for 24 h and then treated with tubacin for 24 h. *P<0.01.
Oncogene, 2016, 35(18):2333-44. Tubacin purchased from Selleck.
A, immunoblotting analysis of E-cadherin, ZO-1, Vimentin, N-cadherin, acetyl-α-tubulin, and α-tubulin in MCF-10A cells. Cells were treated with SB431542 (5 μM), Tubacin (5 μM), Paclitaxol (PTX) (5 nM), Nocodazol (NDL) (5 nM), TSA (50 ng/liter), or Nicotiamide (Nico) (10 mM), followed by co-incubation with TGF-β (2 ng/ml).
J Biol Chem, 2016, 291(10):5396-405. Tubacin purchased from Selleck.
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Choose Selective HDAC Inhibitors
|Description||Tubacin is a highly potent and selective, reversible, cell-permeable HDAC6 inhibitor with an IC50 of 4 nM in a cell-free assay, approximately 350-fold selectivity over HDAC1.|
|Features||The first known selective inhibitor of α-tubulin deacetylation.|
Tubacin, without directly stabilizing microtubules, induces an increase in α-tubulin acetylation with EC50 of 2.5 μM in A549 cells. Tubacin inhibits HDAC6-mediated α-tubulin deacetylation, and inhibits the migration of both wild-type and HDAC6-overexpressing cells.  Tubacin, in combination with paclitaxel, synergistically enhances tubulin acetylation.  Tubacin significantly inhibits both drug-sensitive and drug–resistant MM cell growth with IC50 of 5–20 μM, and induces cell apoptosis by activation of caspases. 
|In vivo||In chick embryos, inhibition of HDAC6 activity by Tubacin reduces the formation of new blood vessels in matrigel/nylon mesh. In angioreactors implanted in mice, Tubacin also impairs the formation of new blood vessels. |
Enzyme Inhibition Assay:Enzyme inhibition assays are performed using the Reaction Biology HDAC Spectrum platform. The HDAC1, 2, 4, 5, 6, 7, 8, 9, 10, and 11 assays used isolated recombinant human protein; HDAC3/NcoR2 complex is used for the HDAC3 assay. Substrate for HDAC1, 2, 3, 6, 10, and 11 assays is a fluorogenic peptide from p53 residues 379-382 (RHKKAc); substrate for HDAC8 is fluorogenic diacyl peptide based on residues 379-382 of p53 (RHKAcKAc). Acetyl-Lys(trifluoroacetyl)-AMC substrate is used for HDAC4, 5, 7, and 9 assays. Compounds are dissolved in DMSO and tested in 10-dose IC50 mode with 3-fold serial dilution starting at 30 μM. Control Compound Trichostatin A (TSA) is tested in a 10-dose IC50 with 3-fold serial dilution starting at 5 μM. IC50 values are extracted by curve-fitting the dose/response slopes.
-  Butler KV, et al. J Am Chem Soc. 2010, 132(31), 10842-0846.
-  Haggarty SJ, et al. Proc Natl Acad Sci U S A. 2003, 100(8), 4389-4394.
-  Marcus AI, et al. Cancer Res. 2005, 65(9), 3883-3893.
|In vitro||DMSO||100 mg/mL (138.53 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+5% Tween 80+ddH2O
For best results, use promptly after mixing.
* 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:
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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:
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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.
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.
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