原发性胰腺腺癌中 HGF/Met 和 MSP/Ron 系统的比较特征分析。
Comparative characterization of the HGF/Met and MSP/Ron systems in primary pancreatic adenocarcinoma.
机构信息
Department of School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA.
Athira Pharma, Inc., 4000 Mason Rd Suite 300, Box 352141, Seattle, WA 98195-2141, USA.
出版信息
Cytokine. 2019 Nov;123:154762. doi: 10.1016/j.cyto.2019.154762. Epub 2019 Jun 26.
Pancreatic cancer is an aggressive disease with a poor prognosis for which current standard chemotherapeutic treatments offer little survival benefit. Receptor tyrosine kinases (RTK)s have garnered interest as therapeutic targets to augment or replace standard chemotherapeutic treatments because of their ability to promote cell growth, migration, and survival in various cancers. Met and Ron, which are homologous RTKs activated by the ligands hepatocyte growth factor (HGF) and macrophage stimulating protein (MSP), respectively, are over-activated and display synergistic malignant effects in several cancers. Despite the homology between Met and Ron, studies that have directly compared the functional outcomes of these systems in any context are limited. To address this, we sought to determine if the HGF/Met and MSP/Ron systems produce overlapping or divergent contributions towards a malignant phenotype by performing a characterization of MSP and HGF driven signaling, behavioral, and transcriptomic responses in a primary pancreatic adenocarcinoma (PAAD) cell line in vitro. The impact of dual Met and Ron expression signatures on the overall survival of PAAD patients was also assessed. We found HGF and MSP both encouraged PAAD cell migration, but only HGF increased proliferation. RNA sequencing revealed that the transcriptomic effects of MSP mimicked a narrow subset of the responses induced by HGF. Analysis of clinical data indicated that the strong prognostic value of Met expression in primary PAAD does not appear to be modulated by Ron expression. The relatively reduced magnitude of MSP-dependent effects on primary PAAD cells are consistent with the limited prognostic value of Ron expression in this cancer when compared to Met. Although HGF and MSP produced a differing breadth of responses in vitro, overlapping pro-cancer signaling, behavioral, and transcriptional effects still point to a potential role for the MSP/Ron system in pancreatic cancer.
胰腺癌是一种侵袭性疾病,预后不良,目前的标准化疗治疗方法几乎没有带来生存获益。受体酪氨酸激酶(RTK)因其能够促进多种癌症中的细胞生长、迁移和存活,因此作为治疗靶点引起了关注,以增强或替代标准化疗治疗。Met 和 Ron 是分别由配体肝细胞生长因子(HGF)和巨噬细胞刺激蛋白(MSP)激活的同源 RTK,它们在多种癌症中过度激活并表现出协同的恶性效应。尽管 Met 和 Ron 具有同源性,但在任何情况下直接比较这些系统的功能结果的研究都很有限。为了解决这个问题,我们试图通过在体外的原发性胰腺腺癌(PAAD)细胞系中对 MSP 和 HGF 驱动的信号转导、行为和转录组反应进行表征,来确定 HGF/Met 和 MSP/Ron 系统在恶性表型中产生重叠还是发散的贡献。还评估了双重 Met 和 Ron 表达特征对 PAAD 患者总生存率的影响。我们发现 HGF 和 MSP 都促进了 PAAD 细胞的迁移,但只有 HGF 增加了增殖。RNA 测序表明,MSP 的转录组效应模仿了 HGF 诱导的反应的一个狭窄子集。对临床数据的分析表明,Met 表达在原发性 PAAD 中的强预后价值似乎不受 Ron 表达的调节。与 Met 相比,MSP 对原发性 PAAD 细胞的依赖作用的影响相对较小,这与 Ron 表达在这种癌症中的有限预后价值一致。尽管 HGF 和 MSP 在体外产生了不同程度的反应,但重叠的促癌信号、行为和转录效应仍然表明 MSP/Ron 系统在胰腺癌中可能发挥作用。