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Cheng Y, Diao D, Zhang H, Guo Q, Wu X, Song Y, Dang C. High glucose-induced resistance to 5-fluorouracil in pancreatic cancer cells alleviated by 2-deoxy-D-glucose. Biomed Rep 2013; 2:188-192. [PMID: 24649094 DOI: 10.3892/br.2013.211] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 10/22/2013] [Indexed: 12/14/2022] Open
Abstract
Abnormal glucose metabolism from hyperglycemia or diabetes aggravates the progression of pancreatic cancer. It is unknown whether high glucose has an impact on the antitumor effect of 5-fluorouracil (5-Fu) and whether targeting aberrant glucose metabolism using 2-deoxy-D-glucose (2-DG) may reverse this effect in high-glucose microenvironments. The cell viability of AsPC-1 and Panc-1 was analyzed by MTT assay following 5-Fu treatment at different glucose concentrations. Altered sensitivity to 5-Fu by 2-DG was also analyzed. LY294002 was used to inhibit PI3K-Akt signaling to determine the mechanism involved. In response to glucose, 5-Fu-induced cell growth inhibition was attenuated in a dose-dependent manner, accompanied with activated p-Akt, while 2-DG enhanced 5-Fu-induced cell growth inhibition. Moreover, blocking the PI3K/Akt pathway by LY294002 effectively eliminated 2-DG-induced apoptosis. In conclusion, high glucose weakens the antitumor effect of 5-Fu via PI3K/Akt signaling. Using 2-DG in combination with 5-Fu significantly increased their therapeutic effectiveness in high-glucose microenvironments.
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Affiliation(s)
- Yao Cheng
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Dongmei Diao
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Hao Zhang
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Qi Guo
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Xuandi Wu
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Yongchun Song
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
| | - Chengxue Dang
- Department of Surgical Oncology, The First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710061, P.R. China
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