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HPOB

HDAC6 inhibitor, potent and selective CAS# 1429651-50-2

HPOB

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Number of papers citing our products

Chemical structure

HPOB

3D structure

Chemical Properties of HPOB

Cas No. 1429651-50-2 SDF Download SDF
PubChem ID 71532921 Appearance Powder
Formula C17H18N2O4 M.Wt 314.34
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : 50 mg/mL (159.06 mM; Need ultrasonic)
Chemical Name N-hydroxy-4-[2-[N-(2-hydroxyethyl)anilino]-2-oxoethyl]benzamide
SMILES C1=CC=C(C=C1)N(CCO)C(=O)CC2=CC=C(C=C2)C(=O)NO
Standard InChIKey RFAZNTABYJYOAR-UHFFFAOYSA-N
Standard InChI InChI=1S/C17H18N2O4/c20-11-10-19(15-4-2-1-3-5-15)16(21)12-13-6-8-14(9-7-13)17(22)18-23/h1-9,20,23H,10-12H2,(H,18,22)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of HPOB

DescriptionHPOB is a highly potent and selective inhibitor of histone deacetylase 6 (HDAC6) with IC50 of 56 nM, >30 fold less potent against other HDACs. target: HDAC6 [1] IC 50: 56nM [1] In vitro: HPOB causes growth inhibition of normal and transformed cells but does not induce cell death. HPOB enhances the effectiveness of DNA-damaging anticancer drugs in transformed cells but not normal cells. [1] Neuroprotective effect of HPOB demonstrated the crucial role of HDAC6 inhibition in reducing Cort-induced apoptosis in PC12 cells. Pre-treatment with HPOB remarkably reduces Cort-induced cytotoxicity and confirms the anti-apoptotic effect of HPOB via the caspase-3 activity assay and H33342/PI and TUNEL double staining. [2] In vivo: on corticosterone (Cort)-induced apoptosis and explors the possible mechanism of action of HPOB in rat adrenal pheochromocytoma (PC12) cells, which possesses typical neuron features and expresses high levels of glucocorticoid receptors. [2]

References:
[1]. Lee JH et al. Development of a histone deacetylase 6 inhibitor and its biological effects. Proc Natl Acad Sci U S A. 2013 Sep 24;110(39):15704-9. [2]. Li ZY et al. HPOB, an HDAC6 inhibitor, attenuates corticosterone-induced injury in rat adrenal pheochromocytoma PC12 cells by inhibiting mitochondrial GR translocation and the intrinsic apoptosis pathway. Neurochem Int. 2016 Oct;99:239-51.

HPOB Dilution Calculator

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HPOB Molarity Calculator

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Preparing Stock Solutions of HPOB

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.1813 mL 15.9063 mL 31.8127 mL 63.6254 mL 79.5317 mL
5 mM 0.6363 mL 3.1813 mL 6.3625 mL 12.7251 mL 15.9063 mL
10 mM 0.3181 mL 1.5906 mL 3.1813 mL 6.3625 mL 7.9532 mL
50 mM 0.0636 mL 0.3181 mL 0.6363 mL 1.2725 mL 1.5906 mL
100 mM 0.0318 mL 0.1591 mL 0.3181 mL 0.6363 mL 0.7953 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on HPOB

HPOB is a highly potent and selective inhibitor of histone deacetylase 6 (HDAC6) with IC50 of 56nM, >30 fold less potent against other HDACs. [1]
HDAC6 is one of the eleven human zinc-dependent HDACs with two catalytic domains and one ubiquitin-binding domain at the C-terminal. It exhibits various biological functions including regulation of microtubule dynamics and degradation of misfolded proteins. It involves in many cellular pathways related to normal and tumor cell growth, migration and death. [1]
In normal HFS and transformed LNCaP cells, HPOB inhibited cell growth but not viability, induced acetylation of α-Tubulin, but not histones. HPOB enhanced etoposide-, doxorubicin-, and SAHA-induced cell death in transformed cell but not in normal cell. HPOB enhanced the effectives of anticancer drugs via apoptotic pathway and activated DNA damage response in transformed cell. [1]
HPOB is well-tolerated in mice carrying human prostate cancer CWR22 xenograft and enhances cytotoxicity effects of anticancer drug SAHA in these animals. [1]
References:
1.  Lee JH, Mahendran A, Yao Y, Ngo L, Venta-Perez G, Choy ML, Kim N, Ham WS, Breslow R, Marks PA. Development of a histone deacetylase 6 inhibitor and its
biological effects. Proc Natl Acad Sci U S A. 2013 Sep 24;110(39):15704-9.

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References on HPOB

HPOB, an HDAC6 inhibitor, attenuates corticosterone-induced injury in rat adrenal pheochromocytoma PC12 cells by inhibiting mitochondrial GR translocation and the intrinsic apoptosis pathway.[Pubmed:27522966]

Neurochem Int. 2016 Oct;99:239-251.

High levels of glucocorticoids (GCs) have been reported to damage normal hippocampal neurons, and such damage has been positively correlated with major depression (MD) and chronic stress. Our previous study showed that HDAC6 might be a potential target to regulate GC-induced glucocorticoid receptor (GR) translocation to the mitochondria and subsequent apoptosis. In the present study, we investigated the effect of HPOB, a selective HDAC6 inhibitor, on corticosterone (Cort)-induced apoptosis and explored the possible mechanism of action of HPOB in rat adrenal pheochromocytoma (PC12) cells, which possesses typical neuron features and expresses high levels of glucocorticoid receptors. We demonstrated that pre-treatment with HPOB remarkably reduced Cort-induced cytotoxicity and confirmed the anti-apoptotic effect of HPOB via the caspase-3 activity assay and H33342/PI and TUNEL double staining. Mechanistically, we demonstrated that HPOB reversed the Cort-induced elevation of GR levels in the mitochondria and blocked concomitant mitochondrial dysfunction and the intrinsic apoptosis pathway. Furthermore, HPOB was shown to attenuate expression of the multi-chaperone machinery (Hsp90-Hop-Hsp70) and cooperate with mitochondrial translocase of the outer/inner membrane (TOM/TIM) complex recruitment by triggering hyperacetylation of Hsps through HDAC6 inhibition. Considering all of these findings, the neuroprotective effect of HPOB demonstrated the crucial role of HDAC6 inhibition in reducing Cort-induced apoptosis in PC12 cells. The data further suggested that the anti-apoptotic activity of HDAC6 inhibition against the mitochondria-mediated impairment pathway might be mechanistically linked to the hyperacetylation of Hsps and consequent suppression of GR translocation to the mitochondria.

Description

HPOB is a highly potent and selective inhibitor of histone deacetylase 6 (HDAC6) with IC50 of 56 nM, >30 fold less potent against other HDACs.

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