Drug resistance can evolve from a subpopulation of cancer cells that initially survive drug treatment and then gradually form a pool of drug-tolerant cells. Several studies have pinpointed the activation of a specific bypass pathway that appears to provide the critical therapeutic target for preventing drug tolerance. Here, we take a systems-biology approach, using proteomics and genomics to examine the development of drug tolerance to EGFR inhibitors in EGFR-mutant lung adenocarcinoma cells and BRAF inhibitors in BRAF-mutant melanoma cells. We found that there are numerous alternative mitogenic pathways that become activated in both cases, including YAP, STAT3, IGFR1, and phospholipase C (PLC)/protein kinase C (PKC) pathways. Our results suggest that an effective therapeutic strategy to prevent drug tolerance will need to take multiple alternative mitogenic pathways into account rather than focusing on one specific pathway.
耐药性可能源于最初在药物治疗中存活下来的癌细胞亚群,这些细胞随后逐渐形成药物耐受细胞池。多项研究已明确指出,特定旁路途径的激活似乎为预防药物耐受提供了关键的治疗靶点。本研究采用系统生物学方法,结合蛋白质组学与基因组学技术,探究EGFR突变型肺腺癌细胞对EGFR抑制剂及BRAF突变型黑色素瘤细胞对BRAF抑制剂产生药物耐受的发展过程。研究发现,在上述两种情况下均有大量替代性促有丝分裂通路被激活,包括YAP、STAT3、IGFR1以及磷脂酶C(PLC)/蛋白激酶C(PKC)通路。我们的结果表明,要制定有效预防药物耐受的治疗策略,需综合考虑多种替代性促有丝分裂通路,而非仅聚焦于单一特定通路。