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Formula | C29H26ClFN4O4S |
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Molecular Weight | 581.06 | CAS No. | 231277-92-2 | |
Solubility (25°C)* | In vitro | DMSO | 100 mg/mL (172.09 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.) |
Description | Lapatinib is a potent EGFR and ErbB2 inhibitor with IC50 of 10.8 and 9.2 nM in cell-free assays, respectively. Lapatinib induces ferroptosis and autophagic cell death. | ||||||
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Targets |
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In vitro | Lapatinib weakly inhibits the activity of ErbB4 with IC50 of 367 nM, and displays >300-fold selectivity for EGFR and ErbB2 over other kinases such as c-Src, c-Raf, MEK, ERK, c-Fms, CDK1, CDK2, p38, Tie-2, and VEGFR2. Lapatinib significantly inhibits receptor autophosphorylation of EGFR and ErbB2 in a dose-dependent manner with IC50 of 170 nM and 80 nM, respectively in HN5 cells; as well as 210 nM and 60 nM, respectively in BT474 cells. Unlike OSI-774 and Iressa (ZD1839) which preferentially inhibit the growth of the EGFR-overexpressing cells, Lapatinib inhibits the growth of both EGFR- and ErbB2-overexpressing cells. Lapatinib displays higher inhibitory activity against EGFR- or ErbB2-overexpressing cells with IC50 of 0.09-0.21 μM, compared with cells expressing low levels of EGFR or ErbB2 with IC50 of 3-12 μM, and exhibits ~100-fold selectivity over the normal fibroblast cells. Lapatinib potently inhibits the outgrowth of EGFR-overexpressing HN5 and A-431 cells, as well as ErbB2-overexpressing BT474 and N87 cells, and significantly induces G1 arrest of HN5 cells and apoptosis of BT474 cells, which are associated with inhibition of AKT phosphorylation. [1] | ||||||
In vivo | Oral administration of Lapatinib (~100 mg/kg) twice daily significantly inhibits the growth of BT474 and HN5 xenografts in a dose-dependent manner. [1] |
Kinase Assay:[1] |
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Cell Assay:[1] |
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Animal Study:[1] |
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Data from [Cancer Lett, 2013, 340(1), 43-50]
Data from [Mol Oncol, 2013, 7(3), 392-401]
Data from [Mol Carcinog, 2013, 52(12), 959-69]
Data from [Acta Pharmacol Sin, 2013, 10.1038/aps.2013.124]
Tumor-acquired somatic mutation affects conformation to abolish ABCG2-mediated drug resistance [ Drug Resist Updat, 2024, 73:101066] | PubMed: 38387283 |
RAB22A sorts epithelial growth factor receptor (EGFR) from early endosomes to recycling endosomes for microvesicles release [ J Extracell Vesicles, 2024, 13(7):e12494] | PubMed: 39051763 |
EGFR and HER2 hyper-activation mediates resistance to endocrine therapy and CDK4/6 inhibitors in ER+ breast cancer [ Cancer Lett, 2024, 593:216968] | PubMed: 38788968 |
Cell-specific models reveal conformation-specific RAF inhibitor combinations that synergistically inhibit ERK signaling in pancreatic cancer cells [ Cell Rep, 2024, 43(9):114710] | PubMed: 39240715 |
Targeting rapid TKI-induced AXL upregulation overcomes adaptive ERK reactivation and exerts antileukemic effects in FLT3/ITD acute myeloid leukemia [ Mol Oncol, 2024, 10.1002/1878-0261.13749] | PubMed: 39395205 |
Peptidylarginine deiminase 3 modulates response to neratinib in HER2 positive breast cancer [ Oncogenesis, 2024, 13(1):30] | PubMed: 39097594 |
Identification of kinase modulators as host-directed therapeutics against intracellular methicillin-resistant Staphylococcus aureus [ Front Cell Infect Microbiol, 2024, 14:1367938] | PubMed: 38590439 |
Duloxetine enhances the sensitivity of non-small cell lung cancer cells to EGFR inhibitors by REDD1-induced mTORC1/S6K1 suppression [ Am J Cancer Res, 2024, 14(3):1087-1100] | PubMed: 38590408 |
Targeting Tyro3, Axl, and MerTK Receptor Tyrosine Kinases Significantly Sensitizes Triple-Negative Breast Cancer to CDK4/6 Inhibition [ Cancers (Basel), 2024, 16(12)2253] | PubMed: 38927958 |
Neratinib plus dasatinib is highly synergistic in HER2-positive breast cancer in vitro and in vivo [ Transl Oncol, 2024, 49:102073] | PubMed: 39191139 |
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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.
NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.