VX-803 (M4344)

製品コードS9639 バッチS963902

印刷

化学情報

Synonyms

ATR inhibitor 2

Storage
(From the date of receipt)

3 years -20°C powder

化学式

C₂₅H₂₉F₂N₉O₃

分子量

541.55

CAS No.

1613191-99-3

Solubility (25°C)*

体外

DMSO

6 mg/mL (11.07 mM)

Water

Insoluble

Ethanol

Insoluble

体内（毎回新しく調製した物を用意してください）

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.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O この製剤はselleckのラボで検証済みです。上記の溶解方法がご要望を満たさない場合、selleckの営業担当までお問い合わせ頂ければ、個別の試験を行います。	0.300mg/ml (0.55mM)	Taking the 1 mL working solution as an example, add 50 μL of 6 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil この製剤はselleckのラボで検証済みです。上記の溶解方法がご要望を満たさない場合、selleckの営業担当までお問い合わせ頂ければ、個別の試験を行います。	0.300mg/ml (0.55mM)	Taking the 1 mL working solution as an example, add 50 μL of 6 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

* <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.

溶剤液（一定の濃度）を調合する

生物活性

製品説明	VX-803 (M4344, ATR inhibitor 2) is an ATP-competitive, orally active, and selective inhibitor of ataxia telangiectasia and Rad3 related (ATR) kinase with Ki of < 150 pM. VX-803 (M4344) potently inhibits ATR-driven phosphorylated checkpoint kinase-1 (P-Chk1) phosphorylation with IC50 of 8 nM. VX-803 (M4344) exhibits potential antineoplastic activity.
in vitro	M4344 is determined to be an adenosine triphosphate (ATP)-competitive, highly potent, and tight-binding inhibitor of ATR with a Ki of < 150 pM. Minimal inhibitory activity is observed against a large panel of unrelated protein kinases, with 308 of 312 kinases tested having a measured Ki corresponding to more than 100-fold selectivity. This compound potently inhibits ATR-driven phosphorylated checkpoint kinase-1 (P-Chk1) phosphorylation with an IC50 of 8 nM. Profiling on a selected set of cancer cell lines shows synergy with several types of DNA damaging chemotherapeutics as well as PARP1/2 and CHK1 inhibitors.^[1]
in vivo	In monotherapy efficacy studies this compound shows tumor stasis to regression in tumor models with alternative lengthening of telomeres (ALT). In combination with PARP inhibitors, tumor regression can be observed in triple-negative breast cancer xenograft models.^[1]

プロトコル(参考用のみ)

細胞アッセイ	細胞株	Cell-free assays
	濃度	Ki of < 150 pM
	反応時間
	実験の流れ
動物実験	動物モデル	Rag2 mice
	投薬量	10 or 20 mg/kg
	投与方法	o.g.

参考

https://cancerres.aacrjournals.org/content/79/13_Supplement/369
https://aacrjournals.org/cancerres/article/79/13_Supplement/369/635928/Abstract-369-Antitumor-activity-of-M4344-a-potent
https://pubmed.ncbi.nlm.nih.gov/36413415/

Selleckの高級品が、幾つかの出版された研究調査結果（以下を含む）で使われた：

Gemcitabine and ATR inhibitors synergize to kill PDAC cells by blocking DNA damage response [ Mol Syst Biol, 2025, 21(3):231-253]	PubMed: 39838187
DNA-PK inhibition sustains the antitumor innate immune response in small cell lung cancer [ iScience, 2025, 28(3):111943]	PubMed: 40034862
Large DNA deletions occur during DNA repair at 20-fold lower frequency for base editors and prime editors than for Cas9 nucleases [ Nat Biomed Eng, 2024, 10.1038/s41551-024-01277-5]	PubMed: 39496933
Combined Therapeutic Strategies Based on the Inhibition of Non-Oncogene Addiction to Improve Tumor Response in EGFR- and KRAS-Mutant Non-Small-Cell Lung Cancer [ Cancers (Basel), 2024, 16(23)3941]	PubMed: 39682133
Detailed mechanisms for unintended large DNA deletions with CRISPR, base editors, and prime editors [ bioRxiv, 2024, ]	PubMed: none
Replicative senescence is ATM driven, reversible, and accelerated by hyperactivation of ATM at normoxia [ bioRxiv, 2024, 2024.06.24.600514]	PubMed: 38979390
A Chemical Proteomics Approach to Discover Regulators of Innate Immune Signaling [ Viruses, 2023, 15(5)1112]	PubMed: 37243198
ATR inhibition overcomes platinum tolerance associated with ERCC1- and p53-deficiency by inducing replication catastrophe [ NAR Cancer, 2023, 5(1):zcac045]	PubMed: 36644397
Immunogenicity of small-cell lung cancer associates with STING pathway activation and is enhanced by ATR and TOP1 inhibition [ Cancer Med, 2022, 10.1002/cam4.5109]	PubMed: 35957613

長期の保管のために-20°Cの下で製品を保ってください。

人間や獣医の診断であるか治療的な使用のためにでない。

各々の製品のための特定の保管と取扱い情報は、製品データシートの上で示されます。大部分のSelleck製品は、推薦された状況の下で安定です。製品は、推薦された保管温度と異なる温度で、時々出荷されます。長期の保管のために必要とされてそれと異なる温度で、多くの製品は、短期もので安定です。品質を維持するが、夜通しの積荷のために最も経済的な貯蔵状況を用いてあなたの送料を保存する状況の下に、製品が出荷されることを、我々は確実とします。製品の受領と同時に、製品データシートの上で貯蔵推薦に従ってください。