ARS-853

Catalog No.S8156 Batch:S815602

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Technical Data

Formula

C22H29ClN4O3
Molecular Weight 432.94 CAS No. 1629268-00-3
Solubility (25°C)* In vitro DMSO 86 mg/mL (198.64 mM)
Ethanol 6 mg/mL (13.85 mM)
Water 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 ARS-853 is a selective, covalent KRAS(G12C) inhibitor that inhibits mutant KRAS-driven signaling by binding to the GDP-bound oncoprotein and preventing activation. ARS-853 also induces apoptosis.
Targets
K-Ras(G12C) [2]
(in H358 cells)
2.5 μM
In vitro ARS-853 treatment of KRASG12C cells led to a dose-dependent and nearly complete inhibition of CRAF-RBD (RBD)-mediated pulldown of KRAS from lysates, with an IC50 of approximately 1 μmol/L. Treatment of H358 cells by ARS-853 resulted in a significant loss of KRAS–CRAF interactions. Consistent with an inactive state of KRASG12C once bound to ARS-853, downstream signaling through both MAPK (including pMEK, pERK, and pRSK) and PI3K signaling (pAKT) pathways was inhibited by ARS-853 in H358 and other KRASG12C cell lines. The inhibition of RAF-RBD pulldown and KRAS downstream signaling was sustained over a period of 72 hours, accompanied by G1 cell-cycle arrest, loss of Cyclin D1 and Rb expression, and an increase in the cell-cycle inhibitor p27 KIP1. In addition, hallmarks of apoptosis, including cleaved PARP and increases in sub-diploid DNA, were observed in H358 cells following treatment with ARS-853. No effects on RAF-RBD binding or downstream signaling were observed in A549 cells (KRASG12S), and the inhibitory effects of ARS-853 in H358 cells could be rescued by ectopic expression of KRASG12V. KRASG12C is the most potent covalent target of ARS-853 across more than 2,700 cellular proteins and consistently find that this compound exerts no effects on cellular signaling or growth in non-KRASG12C cells at concentrations up to 10-fold higher than its KRASG12C potency. ARS-853 reacts only with the inactive (GDP-bound), but the not the active (GTP-bound), state of KRAS[1]. ARS853 reduced KRAS-GTP levels and ERK phosphorylation in human embryonic kidney 293 (HEK293) or H358 cells engineered to express KRASG12C but not in those expressing KRASG12C/A59G. ARS853 traps KRASG12C in a GDP-bound conformation by lowering its affinity for nucleotide exchange factors[2].

Protocol (from reference)

Cell Assay:

[2]
  • Cell lines

    H358 (G12C) cells

  • Concentrations

    0.05, 0.1, 0.5, 1, 5, 10, 50 μM

  • Incubation Time

    5 h

  • Method

    KRASG12C mutant cells (H358) were treated with ARS853 for 5 hours. The effect on the level of active, or GTP-bound, KRAS was determined by a RAS-binding domain pull-down (RBD:PD) assay and immunoblotting with a KRAS-specific antibody. 

Selleck's ARS-853 has been cited by 5 publications

Real-time monitoring of the reaction of KRAS G12C mutant specific covalent inhibitor by in vitro and in-cell NMR spectroscopy [ Sci Rep, 2023, 10.1038/s41598-023-46623-w] PubMed: 37935773
HDLBP promotes hepatocellular carcinoma proliferation and sorafenib resistance by suppressing Trim71-dependent RAF1 degradation [ Cell Mol Gastroenterol Hepatol, 2022, S2352-345X(22)00216-8] PubMed: 36244648
Profiling oncogenic KRAS mutant drugs with a cell-based Lumit p-ERK immunoassay [ SLAS Discov, 2022, S2472-5552(22)12517-7] PubMed: 35288294
Investigation of KRAS Dependency Bypass and Functional Characterization of All Possible KRAS Missense Variants [ ProQuest, 2020, N/A] PubMed: None
Coxsackievirus Type B3 Is a Potent Oncolytic Virus against KRAS-Mutant Lung Adenocarcinoma. [ Mol Ther Oncolytics, 2019, 14:266-278] PubMed: 31463367

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