b-AP15
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MedKoo CAT#: 406452

CAS#: 1009817-63-3

Description: b-AP15 is a novel inhibitor of proteasome deubiquitination. b-AP15 displays antitumor activity in several preclinical, solid tumor models. b-AP15 triggers time- and dose-dependent apoptosis of the human multiple myeloma (MM) cell lines RPMI8226 and U266, as determined by phosphatidylserine exposure. Furthermore, b-AP15 triggered processing of pro-caspase-3 and cleavage of poly (ADP-ribose) polymerase in MM cells. b-AP15 also induced caspase-independent apoptosis in primary human natural killer cells. b-AP15 may have potential for treatment of multiple myeloma patients.


Chemical Structure

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b-AP15
CAS# 1009817-63-3

Theoretical Analysis

MedKoo Cat#: 406452
Name: b-AP15
CAS#: 1009817-63-3
Chemical Formula: C22H17N3O6
Exact Mass: 419.11174
Molecular Weight: 419.39
Elemental Analysis: C, 63.01; H, 4.09; N, 10.02; O, 22.89

Price and Availability

Size Price Availability Quantity
25.0mg USD 90.0 Same Day
50.0mg USD 150.0 Same Day
100.0mg USD 250.0 Same Day
200.0mg USD 450.0 Same Day
500.0mg USD 750.0 Same Day
1.0g USD 1250.0 Same Day
2.0g USD 1950.0 Same Day
5.0g USD 3650.0 2 Weeks
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Synonym: b-AP15; b-AP15; b-AP-15; USP14 Inhibitor III; UCHL5UCH37 Inhibitor II; NSC687852.

IUPAC/Chemical Name: (3E,5E)-1-acryloyl-3,5-bis(4-nitrobenzylidene)piperidin-4-one.

InChi Key: GFARQYQBWJLZMW-JYFOCSDGSA-N

InChi Code: InChI=1S/C22H17N3O6/c1-2-21(26)23-13-17(11-15-3-7-19(8-4-15)24(28)29)22(27)18(14-23)12-16-5-9-20(10-6-16)25(30)31/h2-12H,1,13-14H2/b17-11+,18-12+

SMILES Code: O=C1/C(CN(C(C=C)=O)C/C1=C\C2=CC=C([N+]([O-])=O)C=C2)=C/C3=CC=C([N+]([O-])=O)C=C3

Appearance: Yellow solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Biological target: b-AP15 is a specific inhibitor of the deubiquitinating enzymes UCHL5 and Usp14.
In vitro activity: Purified 19S proteasomes (5 nM) are treated with indicated concentrations of b-AP15 and DUB activity is determined by detectionof Ub-AMC cleavage. The IC50 value (2.1±0.411 μM) is determined from log concentration curves in Graph Pad Prism using non linear regression analysis. b-AP15 as a previously unidentified class of proteasome inhibitor that abrogates the deubiquitinating activity of the 19S regulatory particle. b-AP15 inhibited the activity of two 19S regulatory-particle-associated deubiquitinases, ubiquitin C-terminal hydrolase 5 (UCHL5) and ubiquitin-specific peptidase 14 (USP14), resulting in accumulation of polyubiquitin. b-AP15 induced tumor cell apoptosis that is insensitive to TP53 status and overexpression of the apoptosis inhibitor BCL2. Reference: Nat Med. 2011 Nov 6;17(12):1636-40. https://doi.org/10.1038/nm.2536
In vivo activity: b-AP15 (2.5 mg/kg) inhibits tumor growth in syngenic mice models with less frequent administration schedules. We administered b-AP15 to C57BL/6J mice with Lewis lung carcinomas (LLCs) using a 2-d-on, 2-d-off schedule and to BALB/c mice with orthotopic breast carcinoma (4T1) using a 1-d-on, 3-d-off schedule. b-AP15 significantly inhibited tumor growth in both models, with T/C=0.16 (P≤0.01) for the C57BL/6J mice and T/C=0.25 (P≤0.001) for the BALB/c mice. A reduction in the number of pulmonary metastases also is observed in the group of mice with 4T1 breast carcinomas treated with b-AP15. Reference: Nat Med. 2011 Nov 6;17(12):1636-40. https://doi.org/10.1038/nm.2536

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMSO 20.0 47.69

Preparing Stock Solutions

The following data is based on the product molecular weight 419.39 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
In vitro protocol: 1. D'Arcy P, Brnjic S, Olofsson MH, Fryknäs M, Lindsten K, De Cesare M, Perego P, Sadeghi B, Hassan M, Larsson R, Linder S. Inhibition of proteasome deubiquitinating activity as a new cancer therapy. Nat Med. 2011 Nov 6;17(12):1636-40. doi: 10.1038/nm.2536. PMID: 22057347. 2. Tian Z, D'Arcy P, Wang X, Ray A, Tai YT, Hu Y, Carrasco RD, Richardson P, Linder S, Chauhan D, Anderson KC. A novel small molecule inhibitor of deubiquitylating enzyme USP14 and UCHL5 induces apoptosis in multiple myeloma and overcomes bortezomib resistance. Blood. 2014 Jan 30;123(5):706-16. doi: 10.1182/blood-2013-05-500033. Epub 2013 Dec 6. PMID: 24319254; PMCID: PMC3907756.
In vivo protocol: 1. D'Arcy P, Brnjic S, Olofsson MH, Fryknäs M, Lindsten K, De Cesare M, Perego P, Sadeghi B, Hassan M, Larsson R, Linder S. Inhibition of proteasome deubiquitinating activity as a new cancer therapy. Nat Med. 2011 Nov 6;17(12):1636-40. doi: 10.1038/nm.2536. PMID: 22057347.

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1: Tian Z, D'Arcy P, Wang X, Ray A, Tai YT, Hu Y, Carrasco RD, Richardson P, Linder S, Chauhan D, Anderson KC. A novel small molecule inhibitor of deubiquitylating enzyme USP14 and UCHL5 induces apoptosis in multiple myeloma and overcomes bortezomib resistance. Blood. 2014 Jan 30;123(5):706-16. doi: 10.1182/blood-2013-05-500033. Epub 2013 Dec 6. PubMed PMID: 24319254.

2: Feng X, Holmlund T, Zheng C, Fadeel B. Proapoptotic effects of the novel proteasome inhibitor b-AP15 on multiple myeloma cells and natural killer cells. Exp Hematol. 2013 Nov 27. pii: S0301-472X(13)00871-0. doi: 10.1016/j.exphem.2013.11.010. [Epub ahead of print] PubMed PMID: 24291587.

3: Brnjic S, Mazurkiewicz M, Fryknäs M, Sun C, Zhang X, Larsson R, D'Arcy P, Linder S. Induction of Tumor Cell Apoptosis by a Proteasome Deubiquitinase Inhibitor Is Associated with Oxidative Stress. Antioxid Redox Signal. 2013 Oct 17. [Epub ahead of print] PubMed PMID: 24011031.

4: Sarhan D, Wennerberg E, D'Arcy P, Gurajada D, Linder S, Lundqvist A. A novel inhibitor of proteasome deubiquitinating activity renders tumor cells sensitive to TRAIL-mediated apoptosis by natural killer cells and T cells. Cancer Immunol Immunother. 2013 Aug;62(8):1359-68. doi: 10.1007/s00262-013-1439-1. Epub 2013 May 21. PubMed PMID: 23689729.

5: D'Arcy P, Linder S. Proteasome deubiquitinases as novel targets for cancer therapy. Int J Biochem Cell Biol. 2012 Nov;44(11):1729-38. doi: 10.1016/j.biocel.2012.07.011. Epub 2012 Jul 20. Review. PubMed PMID: 22819849.

6: D'Arcy P, Brnjic S, Olofsson MH, Fryknäs M, Lindsten K, De Cesare M, Perego P, Sadeghi B, Hassan M, Larsson R, Linder S. Inhibition of proteasome deubiquitinating activity as a new cancer therapy. Nat Med. 2011 Nov 6;17(12):1636-40. doi: 10.1038/nm.2536. PubMed PMID: 22057347.

b-AP15

25.0mg / USD 90.0


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