针对黑色素瘤中激酶活性位点以外的 ERK 进行靶向治疗。
Targeting ERK beyond the boundaries of the kinase active site in melanoma.
机构信息
Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas.
Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas.
出版信息
Mol Carcinog. 2019 Sep;58(9):1551-1570. doi: 10.1002/mc.23047. Epub 2019 Jun 12.
Extracellular signal-regulated kinase 1/2 (ERK1/2) constitute a point of convergence for complex signaling events that regulate essential cellular processes, including proliferation and survival. As such, dysregulation of the ERK signaling pathway is prevalent in many cancers. In the case of BRAF-V600E mutant melanoma, ERK inhibition has emerged as a viable clinical approach to abrogate signaling through the ERK pathway, even in cases where MEK and Raf inhibitor treatments fail to induce tumor regression due to resistance mechanisms. Several ERK inhibitors that target the active site of ERK have reached clinical trials, however, many critical ERK interactions occur at other potentially druggable sites on the protein. Here we discuss the role of ERK signaling in cell fate, in driving melanoma, and in resistance mechanisms to current BRAF-V600E melanoma treatments. We explore targeting ERK via a distinct site of protein-protein interaction, known as the D-recruitment site (DRS), as an alternative or supplementary mode of ERK pathway inhibition in BRAF-V600E melanoma. Targeting the DRS with inhibitors in melanoma has the potential to not only disrupt the catalytic apparatus of ERK but also its noncatalytic functions, which have significant impacts on spatiotemporal signaling dynamics and cell fate.
细胞外信号调节激酶 1/2(ERK1/2)是调节包括增殖和存活等基本细胞过程的复杂信号事件的汇聚点。因此,ERK 信号通路的失调在许多癌症中很常见。在 BRAF-V600E 突变黑色素瘤的情况下,ERK 抑制已成为一种可行的临床方法,可以通过 ERK 途径阻断信号传导,即使在 MEK 和 Raf 抑制剂治疗因耐药机制而未能诱导肿瘤消退的情况下也是如此。几种靶向 ERK 活性位点的 ERK 抑制剂已进入临床试验,然而,许多关键的 ERK 相互作用发生在蛋白质上其他潜在可成药的位点。在这里,我们讨论了 ERK 信号在细胞命运、驱动黑色素瘤以及当前 BRAF-V600E 黑色素瘤治疗的耐药机制中的作用。我们探讨了通过称为 D 募集位点(DRS)的蛋白质-蛋白质相互作用的独特位点靶向 ERK,作为 BRAF-V600E 黑色素瘤中 ERK 通路抑制的替代或补充模式。用抑制剂在黑色素瘤中靶向 DRS 不仅有可能破坏 ERK 的催化装置,还可能破坏其非催化功能,这对时空信号动力学和细胞命运有重大影响。