Acalabrutinib (ACP-196)

Catalog No.S8116 Batch:S811603

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Technical Data

Formula

C26H23N7O2
Molecular Weight 465.51 CAS No. 1420477-60-6
Solubility (25°C)* In vitro DMSO 93 mg/mL (199.78 mM)
Ethanol 93 mg/mL (199.78 mM)
Water Insoluble
In vivo (Add solvents to the product individually and in order)
Homogeneous suspension
CMC-NA
≥5mg/ml Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Acalabrutinib (ACP-196) is a selective second-generation Bruton's tyrosine kinase (BTK) inhibitor with an IC50 of 3 nM, which prevents the activation of the B-cell antigen receptor (BCR) signaling pathway. ACP-196 has improved target specificity with 323-, 94-, 19- and 9-fold selectivity over the other TEC kinase family members (ITK, TXK, BMX, and TEC, respectively) and no activity against EGFR.
Targets
BTK [1]
(in a human whole-blood CD69 B cell activation assay)
3nM
In vitro

In the in vitro signaling assay on primary human CLL cells, acalabrutinib inhibits tyrosine phosphorylation of downstream targets of ERK, IKB, and AKT. Acalabrutinib demonstrates higher selectivity for BTK with IC50 determinations on nine kinases with a cysteine residue in the same position as BTK. acalabrutinib has no effect on EGFR phosphorylation on tyrosine residues Y1068 and Y1173. 
In vivo

A similar model is used to compare the duration of Btk inhibition after a single oral dose of 25 mg/kg. ACP-196 inhibits CD86 expression >90% at 3h postdose[3].

Protocol (from reference)

Cell Assay:

[1]
  • Cell lines

    primary human CLL cells,T cells, NK cells, and epithelial cells

  • Concentrations

    --

  • Incubation Time

    --

  • Method

    --
Animal Study:

[2]
  • Animal Models

    canine model of B cell NHL

  • Dosages

    2.5, 5, 10 mg/kg.

  • Administration

    orally administered 

References

  • https://pubmed.ncbi.nlm.nih.gov/26957112/
  • http://cancerres.aacrjournals.org/content/74/19_Supplement/1744
  • http://cancerres.aacrjournals.org/content/75/15_Supplement/2596

Customer Product Validation

Comparison of the impairment of ADCC against primary CLL cells by different irreversible BTK inhibitors. The antibody-dependent increase in the percentages of minimal calcein retention was determined with 3-fold excess of 1708-LC3E11 effector cells over CLL target cells in seven independent experiments. (a) Asterisks above the boxes and whiskers denote the significance of enhanced cytotoxicity compared to the control without addition of antibodies and inhibitors as determined by paired t-tests. Furthermore combination treatment was compared to that with anti-CD20 antibodies as single agents. (b) The mean differences ± SEM in the cytotoxicity against CLL cells in the presence and absence of rituximab and obinutuzumab were calculated from the data shown in (a). The ADCC of rituximab and obinutuzumab was compared by paired two-tailed t-test. *p<0.05; **p<0.01; ***p<0.001.

Data from [ , , BioMed Research International, 2018, Article ID 1023490 ]

Selleck's Acalabrutinib (ACP-196) has been cited by 56 publications

Bruton's tyrosine kinase (BTK) and matrix metalloproteinase-9 (MMP-9) regulate NLRP3 inflammasome-dependent cytokine and neutrophil extracellular trap responses in primary neutrophils [ J Allergy Clin Immunol, 2025, 155(2):569-582] PubMed: 39547282
A Triple Oral Combination of Bendamustine, Acalabrutinib, and Venetoclax Demonstrates Efficacy Against Mantle Cell Lymphoma In Vitro and In Vivo [ Cancers (Basel), 2025, 17(11)1889] PubMed: 40507368
Integrating Single-Cell Biophysical and Transcriptomic Features to Resolve Functional Heterogeneity in Mantle Cell Lymphoma [ bioRxiv, 2025, 2025.05.20.655210] PubMed: 40475412
FoxO1/Rictor axis induces a nongenetic adaptation to ibrutinib via Akt activation in chronic lymphocytic leukemia [ J Clin Invest, 2024, 134(23)e173770] PubMed: 39436708
Impact of therapeutic inhibition of oncogenic cell signaling tyrosine kinase on cell metabolism: in vivo-detectable metabolic biomarkers of inhibition [ J Transl Med, 2024, 22(1):622] PubMed: 38965536
Patient-derived rhabdomyosarcoma cells recapitulate the genetic and transcriptomic landscapes of primary tumors [ iScience, 2024, 27(10):110862] PubMed: 39319271
Targeting N-linked Glycosylation for the Therapy of Aggressive Lymphomas [ Cancer Discov, 2023, 13(8):1862-1883] PubMed: 37141112
BMX controls 3βHSD1 and sex steroid biosynthesis in cancer [ J Clin Invest, 2023, 133(2)e163498] PubMed: 36647826
XPO1 inhibition sensitises CLL cells to NK cell mediated cytotoxicity and overcomes HLA-E expression [ Leukemia, 2023, 10.1038/s41375-023-01984-z] PubMed: 37528310
In Vitro 3D Spheroid Culture System Displays Sustained T Cell-dependent CLL Proliferation and Survival [ Hemasphere, 2023, 7(9):e938] PubMed: 37637994

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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