A Novel Aminothiazole KY-05009 with Potential to Inhibit Traf2- and Nck-Interacting Kinase (TNIK) Attenuates TGF-β1-Mediated Epithelial-to-Mesenchymal Transition in Human Lung Adenocarcinoma A549 Cells
作者:Jiyeon Kim、Seong-Hee Moon、Bum Tae Kim、Chong Hak Chae、Joo Yun Lee、Seong Hwan Kim
DOI:10.1371/journal.pone.0110180
日期:——
Transforming growth factor (TGF)-β triggers the epithelial-to-mesenchymal transition (EMT) of cancer cells via well-orchestrated crosstalk between Smad and non-Smad signaling pathways, including Wnt/β-catenin. Since EMT-induced motility and invasion play a critical role in cancer metastasis, EMT-related molecules are emerging as novel targets of anti-cancer therapies. Traf2- and Nck-interacting kinase (TNIK) has recently been considered as a first-in-class anti-cancer target molecule to regulate Wnt signaling pathway, but pharmacologic inhibition of its EMT activity has not yet been studied. Here, using 5-(4-methylbenzamido)-2-(phenylamino)thiazole-4-carboxamide (KY-05009) with TNIK-inhibitory activity, its efficacy to inhibit EMT in cancer cells was validated. The molecular docking/binding study revealed the binding of KY-05009 in the hinge region of TNIK, and the inhibitory activity of KY-05009 against TNIK was confirmed by an ATP competition assay (Ki, 100 nM). In A549 cells, KY-05009 significantly and strongly inhibited the TGF-β-activated EMT through the attenuation of Smad and non-Smad signaling pathways, including the Wnt, NF-κB, FAK-Src-paxillin-related focal adhesion, and MAP kinases (ERK and JNK) signaling pathways. Continuing efforts to identify and validate potential therapeutic targets associated with EMT, such as TNIK, provide new and improved therapies for treating and/or preventing EMT-based disorders, such as cancer metastasis and fibrosis.
转化生长因子(TGF)-β通过Smad和非Smad信号通路(包括Wnt/β-catenin)之间精心策划的串扰,引发癌细胞的上皮细胞向间质转化(EMT)。由于 EMT 诱导的运动性和侵袭在癌症转移中起着关键作用,EMT 相关分子正成为抗癌疗法的新靶点。最近,Traf2和Nck-interacting激酶(TNIK)被认为是调节Wnt信号通路的第一类抗癌靶标分子,但对其EMT活性的药理抑制尚未研究。本文利用具有 TNIK 抑制活性的 5-(4-甲基苯甲酰胺基)-2-(苯基氨基)噻唑-4-甲酰胺(KY-05009),验证了其抑制癌细胞 EMT 的功效。分子对接/结合研究显示,KY-05009 与 TNIK 的铰链区结合,ATP 竞争试验证实了 KY-05009 对 TNIK 的抑制活性(Ki,100 nM)。在 A549 细胞中,KY-05009 通过抑制 Smad 和非 Smad 信号通路,包括 Wnt、NF-κB、FAK-Src-paxillin 相关的焦点粘附和 MAP 激酶(ERK 和 JNK)信号通路,显著且强烈地抑制了 TGF-β 激活的 EMT。继续努力鉴定和验证与EMT相关的潜在治疗靶点(如TNIK),可为治疗和/或预防基于EMT的疾病(如癌症转移和纤维化)提供新的改良疗法。