Alectinib

Catalog No.S2762 Batch:S276203

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Technical Data

Formula

C30H34N4O2
Molecular Weight 482.62 CAS No. 1256580-46-7
Solubility (25°C)* In vitro DMSO 6 mg/mL (12.43 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.)

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Biological Activity

Description Alectinib is a potent ALK inhibitor with IC50 of 1.9 nM in cell-free assays, sensitive to L1196M mutation and higher selectivity for ALK than PF-02341066, NVP-TAE684 and PHA-E429.
Targets
ALK (F1174L) [1]
(Cell-free assay)		 ALK [1]
(Cell-free assay)		 ALK (R1275Q) [1]
(Cell-free assay)
1 nM 1.9 nM 3.5 nM
In vitro The dissociation constant (KD) value of CH5424802 for ALK in an ATP-competitive manner is 2.4 nM. CH5424802 has substantial inhibitory potency against both native ALK and L1196M with Ki of 0.83 nM and 1.56 nM, respectively. CH5424802 prevents autophosphorylation of ALK in NCI-H2228 NSCLC cells expressing EML4-ALK. CH5424802 also suppresses the phosphorylation of STAT3 and AKT, but not of ERK1/2. CH5424802 completely inhibits the phosphorylation of STAT3 at Tyr705. CH5424802 is preferentially efficacious against NCI-H2228 cells expressing EML4-ALK, but not ALK fusion-negative NSCLC cell lines, including HCC827 cells (EGFR exon 19 deletion), A549 cells (KRAS mutant), or NCI-H522 cells (EGFR wild-type, KRAS wild-type, and ALK wild-type) in monolayer culture. CH5424802 elicits an apoptotic marker—caspase-3/7-like activation—in NCI-H2228 spheroid cells. CH5424802 blocks the growth of two lymphoma lines, KARPAS-299 and SR, with NPM-ALK fusion protein but does not influence the growth of an HDLM-2 lymphoma line without ALK fusion. [1] CH5424802 displays high target selectivity and the stronger anti-proliferative activity against KARPAS-299. CH5424802 inhibits KAPRAS-299 with an IC50 of 3 nM, and KDR with IC50 of 1.4 μM. The metabolic stability of CH5424802 is very high.[2]
In vivo Oral administration of CH5424802 dose-dependently inhibits tumor growth with an ED50 of 0.46 mg/kg and tumor regression. Treatment of 20 mg/kg CH5424802 reveals rapid tumor regression by 168%, the tumor volume in any mouse is <30 mm3 after 11 days of treatment (at day 28), a potent antitumor effect is maintained, and tumor regrowth does not occur throughout the 4-week drug-free period. The half-life and the oral bioavailability of CH5424802 in mice are 8.6 hours and 70.8%, respectively. At a repeated dose of 6 mg/kg, the mean plasma levels reached 1.7, 1.5, and 0.3 nM at 2, 7, and 24 hours post-dose, respectively. Administration of CH5424802 leads to tumor growth prevention and tumor regression. Tumor growth inhibition at 20 mg/kg is 119% for KARPAS-299 and 104% for NB-1 on day 20. CH5424802 inhibits the phosphorylation of STAT3 in a dose-dependent manner (2–20 mg/kg). A partial decrease in AKT phosphorylation is also observed in CH5424802-treated xenograft tumors. [1]

Protocol (from reference)

Kinase Assay:[1]
  • Kinase inhibitory assays in Vitro

    The inhibitory ability against each kinase except for MEK1 and Raf-1 is evaluated by examining their ability to phosphorylate various substrate peptides in the presence of CH5424802 using time-resolved fluorescence resonance energy transfer (TR-FRET) assay or fluorescence polarization (FP) assay. The inhibitory activity against MEK1 is evaluated by quantitative analysis of the phosphorylation of a substrate peptide by a recombinant ERK2 protein in the presence of CH5424802. The inhibitory activity against Raf-1 is evaluated by examining the ability of the kinases to phosphorylate MEK1 in the presence of CH5424802.
Cell Assay:[1]
  • Cell lines

    NSCLC, A549 and HCC827 cell lines

  • Concentrations

    0-1 μM

  • Incubation Time

    5 days

  • Method

    Cells including NSCLC, A549 and HCC827 are seeded in 96-well plates overnight and incubated with various concentrations of CH5424802 for the indicated time. For spheroid cell growth inhibition assay, cells are seeded on spheroid plates, incubated overnight, and then treated with compound for the indicated times. The viable cells are measured by the Luminescent Cell Viability Assay. Caspase-3/7 assay is evaluated using the Caspase-Glo 3/7 Assay Kit.
Animal Study:[1]
  • Animal Models

    SCID or nude mice bearing NCI-H2228

  • Dosages

    20 mg/kg

  • Administration

    Oral administration

Customer Product Validation

Data from [Data independently produced by Int J Oncol, 2014, 45(4), 1430-6]

, , Prof. Gambacorti from Università degli Studi di Milano Bicocc

, , Prof. Gambacorti from Università degli Studi di Milano Bicocc

Data from [Data independently produced by , , Oncologist, 2017, 22(2):158-164]

Selleck's Alectinib has been cited by 89 publications

Multi-omic and functional analysis for classification and treatment of sarcomas with FUS-TFCP2 or EWSR1-TFCP2 fusions [ Nat Commun, 2024, 15(1):51] PubMed: 38168093
Combination Therapies Targeting ALK-aberrant Neuroblastoma in Preclinical Models [ Clin Cancer Res, 2023, 29(7):1317-1331] PubMed: 36602782
Crizotinib Has Preclinical Efficacy in Philadelphia-Negative Myeloproliferative Neoplasms [ Clin Cancer Res, 2023, 29(5):943-956] PubMed: 36537918
Genotype-phenotype mapping of a patient-derived lung cancer organoid biobank identifies NKX2-1-defined Wnt dependency in lung adenocarcinoma [ Cell Rep, 2023, 42(3):112212] PubMed: 36870059
Adaptive resistance to lorlatinib via EGFR signaling in ALK-rearranged lung cancer [ NPJ Precis Oncol, 2023, 7(1):12] PubMed: 36702855
Spoilt for choice: different immunosuppressive potential of anaplastic lymphoma kinase inhibitors for non small cell lung cancer [ Front Immunol, 2023, 14:1257017] PubMed: 37822928
Spoilt for choice: different immunosuppressive potential of anaplastic lymphoma kinase inhibitors for non small cell lung cancer [ Front Immunol, 2023, 14:1257017] PubMed: 37822928
Efficacy of gilteritinib in comparison with alectinib for the treatment of ALK-rearranged non-small cell lung cancer [ Cancer Sci, 2023, 10.1111/cas.15958] PubMed: 37715310
Pan-HER inhibitors overcome lorlatinib resistance caused by NRG1/HER3 activation in ALK-rearranged lung cancer [ Cancer Sci, 2023, 10.1111/cas.15579] PubMed: 36086904
Pan-HER inhibitors overcome lorlatinib resistance caused by NRG1/HER3 activation in ALK-rearranged lung cancer [ Cancer Sci, 2023, 114(1):164-173] PubMed: 36086904

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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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