XMU-MP-3
目录号 : GC39825XMU-MP-3 是一种有效的非共价 BTK 抑制剂,在 10 μM ATP 存在下,对 BTK WT 和 BTK C481S 突变型的 IC50 分别为 10.7 nM 和 17.0 nM。XMU-MP-3 也诱导凋亡 (apoptosis)。
Cas No.:2031152-08-4
Sample solution is provided at 25 µL, 10mM.
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XMU-MP-3 is a potent non-covalent BTK inhibitor with IC50s of 10.7 nM and 17.0 nM for BTK WT and BTK C481S mutation in the presence of 10 μM ATP, respectively. XMU-MP-3 also induces apoptosis[1].
[1]. Fu Gui, et al. A Non-Covalent Inhibitor XMU-MP-3 Overrides Ibrutinib-Resistant Btk C481S Mutation in B-cell Malignancies. Br J Pharmacol. 2019 Dec;176(23):4491-4509.
Cas No. | 2031152-08-4 | SDF | |
Canonical SMILES | O=C(NC1=CC=C(C)C(N2CC3=CN=C(NC4=CC(C)=NN4C)N=C3N(C)C2)=C1)C5=CC=CC(C(F)(F)F)=C5 | ||
分子式 | C27H27F3N8O | 分子量 | 536.55 |
溶解度 | Soluble in DMSO | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 1.8638 mL | 9.3188 mL | 18.6376 mL |
5 mM | 0.3728 mL | 1.8638 mL | 3.7275 mL |
10 mM | 0.1864 mL | 0.9319 mL | 1.8638 mL |
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A non-covalent inhibitor XMU-MP-3 overrides ibrutinib-resistant BtkC481S mutation in B-cell malignancies
Br J Pharmacol 2019 Dec;176(23):4491-4509.PMID:31364164DOI:10.1111/bph.14809.
Background and purpose: Bruton's tyrosine kinase (BTK) plays a key role in B-cell receptor signalling by regulating cell proliferation and survival in various B-cell malignancies. Covalent low-MW BTK kinase inhibitors have shown impressive clinical efficacy in B-cell malignancies. However, the mutant BtkC481S poses a major challenge in the management of B-cell malignancies by disrupting the formation of the covalent bond between BTK and irreversible inhibitors, such as ibrutinib. The present studies were designed to develop novel BTK inhibitors targeting ibrutinib-resistant BtkC481S mutation. Experimental approach: BTK-Ba/F3, BTK(C481S)-Ba/F3 cells, and human malignant B-cells JeKo-1, Ramos, and NALM-6 were used to evaluate cellular potency of BTK inhibitors. The in vitro pharmacological efficacy and compound selectivity were assayed via cell viability, colony formation, and BTK-mediated signalling. A tumour xenograft model with BTK-Ba/F3, Ramos and BTK(C481S)-Ba/F3 cells in Nu/nu BALB/c mice was used to assess in vivo efficacy of XMU-MP-3. Key results: XMU-MP-3 is one of a group of low MW compounds that are potent non-covalent BTK inhibitors. XMU-MP-3 inhibited both BTK and the acquired mutant BTKC481S, in vitro and in vivo. Further computational modelling, site-directed mutagenesis analysis, and structure-activity relationships studies indicated that XMU-MP-3 displayed a typical Type-II inhibitor binding mode. Conclusion and implications: XMU-MP-3 directly targets the BTK signalling pathway in B-cell lymphoma. These findings establish XMU-MP-3 as a novel inhibitor of BTK, which could serve as both a tool compound and a lead for further drug development in BTK relevant B-cell malignancies, especially those with the acquired ibrutinib-resistant C481S mutation.
The resistance mechanisms and treatment strategies of BTK inhibitors in B-cell lymphoma
Hematol Oncol 2021 Dec;39(5):605-615.PMID:34651869DOI:10.1002/hon.2933.
Bruton's tyrosine kinase inhibitors (BTKi) have revolutionized the treatment of B-cell lymphoma (BCL). These drugs interfere with the mechanisms underlying malignant B-cell pathophysiology, allowing better drug response as well as low toxicity. However, these multiple mechanisms also lead to drug resistance, which compromised the treatment outcome and needs to be solved urgently. This review focuses on genomic variations (such as BTK and its downstream PCLG2 mutations as well as Del 8p, 2p+, Del 6q/8p, BIRC3, TRAF2, TRAF3, CARD11, MYD88, and CCND1 mutations) and related pathways (such as PI3K/Akt/mTOR, NF-κB, MAPK signaling pathways, overexpression of B-cell lymphoma 6, platelet-derived growth factor, toll-like receptors, and microenvironment, cancer stem cells, and exosomes) involved in cancer pathophysiology to discuss the mechanisms underlying resistance to BTKi. We have also reviewed the newly reported drug resistance mechanisms and the proposed potential treatment strategies (the next-generation BTKi, proteolysis-targeting chimera-BTK, XMU-MP-3, PI3K-Akt-mTOR pathway, MYC or LYN kinase inhibitor, and other small-molecule targeted drugs) to overcome drug resistance. The findings presented in this review lay a strong foundation for further research in this field.