Gastric cancer (GC) is one of the most malignant cancers and is estimated to be fifth in incidence ratio and the third leading cause of cancer death worldwide. Despite advances in GC treatment, poor prognosis and low survival rate necessitate the development of novel treatment options. Fibroblast growth factor receptors (FGFRs) have been suggested to be potential targets for GC treatment. In this study, we report a novel selective FGFR inhibitor, RK-019, with a pyrido [1, 2-a] pyrimidinone skeleton. In vitro, RK-019 showed excellent FGFR1-4 inhibitory activities and strong anti-proliferative effects against FGFR2-amplification (FGFR2-amp) GC cells, including SNU-16 and KATO III cells. Treatment with RK-019 suppressed phosphorylation of FGFR and its downstream pathway proteins, such as FRS2, PLCγ, AKT, and Erk, resulting in cell cycle arrest and induction of apoptosis. Furthermore, daily oral administration of RK-019 could attenuate tumor xenograft growth with no adverse effects. Here, we reported a novel specific FGFR inhibitor, RK-019, with potent anti-FGFR2-amp GC activity both in vitro and in vivo.
胃癌(GC)是最恶性的癌症之一,估计在发病率上排名第五,在全球癌症死亡原因中排名第三。尽管GC治疗有所进展,但预后不良和低生存率需要开发新的治疗选择。成纤维细胞生长因子受体(FGFR)被认为是GC治疗的潜在靶点。在这项研究中,我们报道了一种新型的选择性FGFR
抑制剂RK-019,其具有
吡啶[1,2-a]
嘧啶骨架。在体外实验中,RK-019显示出优异的FGFR1-4抑制活性,并对包括SNU-16和KATO III细胞在内的FGFR2扩增(FGFR2-amp)GC细胞具有强烈的抗增殖作用。使用RK-019处理可抑制FGFR及其下游通路蛋白(如FRS2、PLCγ、AKT和Erk)的
磷酸化,导致细胞周期停滞和凋亡诱导。此外,每日口服RK-019可减轻肿瘤异种移植体的生长,没有不良反应。在这里,我们报道了一种新型的特异性FGFR
抑制剂RK-019,其具有在体内外强大的抗FGFR2-amp GC活性。