1. Epigenetics
  2. Histone Acetyltransferase
  3. B026

B026 is a selective, potent, orally active p300/CBP histone acetyltransferase (HAT) inhibitor with IC50 values of 1.8 nM and 9.5 nM for p300 and CBP enzyme, respectively. B026 has anticancer activity for androgen receptor-positive (AR+) prostate cancer cell lines.

For research use only. We do not sell to patients.

B026 Chemical Structure

B026 Chemical Structure

CAS No. : 2379416-48-3

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Description

B026 is a selective, potent, orally active p300/CBP histone acetyltransferase (HAT) inhibitor with IC50 values of 1.8 nM and 9.5 nM for p300 and CBP enzyme, respectively. B026 has anticancer activity for androgen receptor-positive (AR+) prostate cancer cell lines[1].

IC50 & Target[1]

p300

8.1 nM (IC50)

CBP

9.5 nM (IC50)

In Vitro

B026 (0-5 μM; 12 h; cancer cell lines) has antiproliferative activity[1].
B026 (0-5 μM; 6 h; MV-4-11 cells) exhibits inhibitory effects on H3K27Ac expression[1].
B026 (0-5 μM; 12 h; MV-4-11 cells) targets the cellular p300 protein and increases the thermal stability of p300 protein in a dose-dependent manner[1].
B026 (0-1 μM; 24 h; MV-4-11 cells) decreases the expression of MYC, which a key oncogenictranscription factor that is regulated by superenhancer regions containing p300/CBP[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Viability Assay[1]

Cell Line: Maver-1, MV-4-11, K562, Kasumi-1, LnCaP-FGC and 22Rv1 cells
Concentration: 0-5 μM
Incubation Time: 12 hours
Result: Inhibited cell growth with IC50 values of 2.6, 4.2, 4.4, 9.8, 40.5 and 104.4 nM for Maver-1, MV-4-11, 22Rv1, LnCaP-FGC, Kasumi-1 and K562 cells, respectively.

Western Blot Analysis[1]

Cell Line: MV-4-11 cells
Concentration: 0, 0.313, 0.625, 1.25, 2.5 and 5 μM
Incubation Time: 6 hours
Result: Decreased the expression of H3K27Ac in a dose-dependent manner.
In Vivo

B026 (1-3 mg/kg; i.v. and p.o.; 0-24 h; male SD rats) has a low clearance (13.4 mL/min/kg) and good oral exposure (AUC=3.71 μM·h) with good oral bioavailability (F=56%) in rat[1].
B026 (50-100 mg/kg; p.o.; daily, for 28 days; balb/c female mice) inhibits tumor growth in a dose-dependent manner[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Balb/c female mice with MV-4-11 xenograft[1]
Dosage: 50 and 100 mg/kg
Administration: Oral administration; daily, for 28 days
Result: Inhibited tumor growth with TGI of 75.0% at 50 mg/kg and 85.7% at 100 mg/kg, respectively.
Animal Model: Male SD rats[1]
Dosage: 1 and 3 mg/kg
Administration: Intravenous injection and oral administration; 0.25, 0.5 , 1 , 2 , 4 , 8 and 24 hours
Result: 1.19
Administration i.v. (1 mg/kg) p.o. (3 mg/kg)
T1/2 (h) 1.5 1.02
Tmax (h) 0.83
Cmax (μM) 1.12
AUClast (μM·h) 2.22 3.71
Vdss (L/kg) 1.5
CL_obs (mL/min/kg) 13.4
PPB % 98.2
F % 56
Molecular Weight

557.50

Formula

C27H23F4N5O4

CAS No.
SMILES

O=C1[C@@]2(NC(N1CC(N3[C@@H](COC4=CC=C(F)C=C4C3)C(F)(F)F)=O)=O)C5=CC=C(C6=CN(N=C6)C)C=C5CC2

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
References
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B026 Related Classifications

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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
B026
Cat. No.:
HY-147261
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