Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China.
Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China.
Cancer Lett. 2016 Apr 28;374(1):127-135. doi: 10.1016/j.canlet.2016.01.054. Epub 2016 Feb 12.
Pancreatic cancer is an aggressive and devastating disease that is characterized by uncontrolled progression, invasiveness and resistance to conventional treatment. In the past decades, much effort has been given to cancer genetics and pathological classification of this disease. Our previous study has uncovered a subgroup of patients with poor outcome, which is characterized by serum signature of CEA(+)/CA125(+)/CA19-9 ≥ 1000 U/mL; however, the underlying biology mechanism remains poorly understood. By using high-throughput screening analysis, we analyzed gene expression signature in highly malignant patients with serum markers of CEA(+)/CA125(+)/CA19-9 ≥ 1000 U/mL. Multiple differentially expressed genes were identified, many of which were closely related with cancer metabolic changes. Treatment of pancreatic cancer cell lines PANC-1 with transforming growth factor-β (TGF-β), which was commonly used to induce metastasis, has uncovered that the glycolytic process and antioxidant response was up-regulated upon TGF-β stimulation. These results were consistent with the high-throughput screening analysis. Subsequent analysis indicated that among glycolytic genes, aldolase A (ALDOA) increased the most significantly upon TGF-β treatment. Further in vitro and in vivo results demonstrated that ALDOA was associated with proliferation and metastasis of pancreatic cancer cells. Moreover, ALDOA predicted poor prognosis of pancreatic cancer, partially due to its role in E-cadherin expression regulation, and the results were further validated by analysis of the correlation between ALDOA and E-cadherin expression in pancreatic cancer tissue samples. Mechanistically, the role of ALDOA in pancreatic cancer might attribute to its regulation of c-Myc, HIF1α and NRF2 (Nuclear Factor, Erythroid 2-Like 2), which were key regulators of glycolysis and antioxidant response control.
胰腺癌是一种侵袭性和致命性疾病,其特征是无法控制的进展、侵袭性和对传统治疗的耐药性。在过去的几十年中,人们在癌症遗传学和这种疾病的病理分类方面付出了巨大努力。我们之前的研究揭示了一组预后不良的患者亚群,其特征是血清标志物 CEA(+) / CA125(+) / CA19-9≥1000U/mL;然而,其潜在的生物学机制仍知之甚少。通过使用高通量筛选分析,我们分析了血清标志物 CEA(+) / CA125(+) / CA19-9≥1000U/mL 的高度恶性患者的基因表达特征。鉴定出多个差异表达基因,其中许多与癌症代谢变化密切相关。用转化生长因子-β(TGF-β)处理胰腺癌细胞系 PANC-1,TGF-β常用于诱导转移,结果表明 TGF-β刺激后糖酵解过程和抗氧化反应被上调。这些结果与高通量筛选分析一致。随后的分析表明,在糖酵解基因中,醛缩酶 A(ALDOA)在 TGF-β处理后增加最为显著。进一步的体外和体内结果表明,ALDOA与胰腺癌细胞的增殖和转移有关。此外,ALDOA 预测胰腺癌的预后不良,部分原因是其在 E-钙粘蛋白表达调节中的作用,并且通过分析胰腺癌组织样本中 ALDOA 与 E-钙粘蛋白表达之间的相关性进一步验证了这一结果。在机制上,ALDOA 在胰腺癌中的作用可能归因于其对 c-Myc、HIF1α 和 NRF2(核因子,红细胞 2 样 2)的调节,这些基因是糖酵解和抗氧化反应控制的关键调节剂。