U3-1402 属于抗体偶联药物(antibody drug conjugate,ADC)。U3-1402 主要由作用于 HER3 抗体 Patritumab 和细胞毒药物 DX-8951(依喜替康,拓扑异构酶抑制剂)组成,通过胱氨酸残基偶联。目前正在临床试验中。 JNJ-61186372(JNJ-372) JNJ-372 通过双靶点抑制,对 EGFR-TKI 耐药后继发的多种突变类型(包括 C797S、MET 及 20ins)都展现了疗效,并且耐受性良好(3 级及以上的不良反应发生率只有 9%),有望成为今后攻克 EGFR 耐药的新星。 JBJ-04-125-02 JBJ-04-125-02 破解了第三代 EGFR 靶向药易产生 C797S 耐药的难题,且在 EAI045 的基础上,抑制 EGFR L858R/T790M 的能力显著增强,使得其单独用药便可达到较好的疗效。另外一个重要突破是与奥西替尼联合使用,两者相得益彰,可明显增强药效。 CH7233163 CH7233163 以非共价键结合方式作用于 EGFR Del 19、L858R 和 T790M,并不受 C797S 突变的干扰,而且对野生 EGFR 抑制较弱。 研究表明:CH7233163 在 Del19/T790M/C797S 和 L858R/T790M/C797S 的 IC50 不到奥西替尼的 1%,换言之,同等浓度的 CH7233163 对肿瘤细胞的杀伤能力超奥西替尼的百倍。 BLU-945 BLU-945 是专门针对于奥希替尼耐药后继发的 T790M/C797S 共发突变及其他 T90M 耐药突变的四代 EGFR-TKI 药物。 目前尚处于临床前阶段,初步结果提示,BLU-945 可以抑制 EGFR19Del/T790M/C797S、L858R/T790M/C797S、19Del/T790M、L858R/T790M 等细胞系。 参考文献1. Chao D, Pang L, Shi Y, et al. AZD3759 induces apoptosis in hepatoma cells by activating a p53-SMAD4 positive feedback loop. Biochem Biophys Res Commun, 2019, 509: 535-540.2. Wu Q, Jiang H, Wang S, et al. Effects of avitinib on the pharmacokinetics of osimertinib in vitro and in vivo in rats. Thorac Cancer, 2020, 11: 2775-2781.3. Murtuza A, Bulbul A, Shen J, et al. Novel Third-Generation EGFR Tyrosine Kinase Inhibitors and Strategies to Overcome Therapeutic Resistance in Lung Cancer. Cancer Res, 2019, 79: 689-698.4. Park S, Ku B, Jung H, et al. EGFR C797S as a Resistance Mechanism of Lazertinib in Non-small Cell Lung Cancer with EGFR T790M Mutation. Cancer Res Treat, 2020, 52: 1288-1290.5. Patel H, Ahmad I, Pawara R, et al. In silico search of triple mutant T790M/C797S allosteric inhibitors to conquer acquired resistance problem in non-small cell lung cancer (NSCLC): a combined approach of structure-based virtual screening and molecular dynamics simulation. J Biomol Struct Dyn, 2020, undefined: 1-15.6. Yonesaka K, Takegawa N,Watanabe S, et al. An HER3-targeting antibody-drug conjugate incorporating a DNA topoisomerase I inhibitor U3-1402 conquers EGFR tyrosine kinase inhibitor-resistant NSCLC. Oncogene, 2019, 38: 1398-1409.7. Vijayaraghavan S, Lipfert L, Chevalier K, et al. Amivantamab (JNJ-61186372), an Fc Enhanced EGFR/cMet Bispecific Antibody, Induces Receptor Downmodulation and Antitumor Activity by Monocyte/Macrophage Trogocytosis. Mol Cancer Ther, 2020, 19: 2044-2056.8. Yun J, Lee S, Kim S, et al. EGFRAntitumor Activity of Amivantamab (JNJ-61186372), an EGFR-MET Bispecific Antibody, in Diverse Models of Exon 20 Insertion-Driven NSCLC. Cancer Discov, 2020, 10: 1194-1209.9. To C, Jang J, Chen T, et al. Single and Dual Targeting of Mutant EGFR with an Allosteric Inhibitor. Cancer Discov, 2019, 9: 926-943.10. Kashima K, Kawauchi H, Tanimura H, et al. CH7233163 overcomes osimertinib resistant EGFR-Del19/T790M/C797S mutation. Mol Cancer Ther, 2020