Tucatinib

Catalog No.S8362 Batch:S836203

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Technical Data

Formula

C26H24N8O2
Molecular Weight 480.52 CAS No. 937263-43-9
Solubility (25°C)* In vitro DMSO 96 mg/mL (199.78 mM)
Water Insoluble
Ethanol Insoluble
* <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 Tucatinib (Irbinitinib, ONT-380, ARRY-380) is an oral, potent, selective, reversible and ATP-competitive small-molecule inhibitor of ErbB-2 (also called HER2) with IC50s of 8 nM and 7 nM for ErbB-2 and p95 HER2, respectively in cell-based assays, showing ~500-fold selective for HER2 vs EGFR. It has potential antineoplastic activity.
Targets
p95 HER2 [2]
(Cell-based assay)		 ErbB2 [2]
(Cell-based assay)
7 nM 8 nM
In vitro

The compound is a reversible, ATP-competitive inhibitor with nanomolar potency against ErbB2 in both in vitro and in cell-based assays[1].

In cell-based assays, ARRY-380 is ~500-fold selective for HER2 vs. EGFR and is equipotent against truncated p95-HER2[2].
In vivo

In vivo, ARRY-380 significantly inhibits tumor growth in multiple HER2-dependent tumor xenograft models[2].

It shows excellent activity in numerous mouse tumor models including breast (BT-474, MDA-MB-453), ovarian (SKOV-3) and gastric (N87) carcinoma models. In the BT-474 model, ARRY-380 demonstrated significant dose-related tumor growth inhibition (TGI; 50% at 50 mg/kg/d and 96% at 100 mg/kg/d) with numerous partial regressions (>50% reduction from baseline size)[1].

Protocol (from reference)

Cell Assay:

[3]
  • Cell lines

    ZR75.1, SKBR3, BT474 and NZBR3 cells

  • Concentrations

    380 μM

  • Incubation Time

    24 h

  • Method

    Cells were treated with ARRY-380 for 24 h.
Animal Study:

[3]
  • Animal Models

    Nude mice

  • Dosages

    ranging up to 200 mg/kg/d

  • Administration

    p.o.

Selleck's Tucatinib has been cited by 18 publications

Neratinib plus dasatinib is highly synergistic in HER2-positive breast cancer in vitro and in vivo [ Transl Oncol, 2024, 49:102073] PubMed: 39191139
HER4 and EGFR activate cell signaling in NRG1 fusion-driven cancers: implications for HER2/HER3-specific vs. pan-HER targeting strategies [ J Thorac Oncol, 2023, S1556-0864(23)00802-X] PubMed: 37678511
Irreversible HER2 inhibitors overcome resistance to the RSL3 ferroptosis inducer in non-HER2 amplified luminal breast cancer [ Cell Death Dis, 2023, 14(8):532] PubMed: 37596261
Integrin αvβ3 Is a Master Regulator of Resistance to TKI-Induced Ferroptosis in HER2-Positive Breast Cancer [ Cancers (Basel), 2023, 15(4)1216] PubMed: 36831558
Drug-drug interaction potentials of tucatinib inhibition of human UDP-glucuronosyltransferases [ Chem Biol Interact, 2023, 381:110574] PubMed: 37263554
Novel HER2-targeted therapy to overcome trastuzumab resistance in HER2-amplified gastric cancer [ Sci Rep, 2023, 13(1):22648] PubMed: 38114573
High-throughput screen in vitro identifies dasatinib as a candidate for combinatorial treatment with HER2-targeting drugs in breast cancer [ PLoS One, 2023, 18(1):e0280507] PubMed: 36706086
Metabolic diversity within breast cancer brain-tropic cells determines metastatic fitness [ Cell Metab, 2022, 34(1):90-105.e7] PubMed: 34986341
Poziotinib Inhibits HER2-Mutant-Driven Therapeutic Resistance and Multiorgan Metastasis in Breast Cancer [ Cancer Res, 2022, 82(16):2928-2939] PubMed: 35736563
Establishment and large-scale validation of a three-dimensional tumor model on an array chip for anticancer drug evaluation [ Front Pharmacol, 2022, 13:1032975] PubMed: 36313330

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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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