Abstract
The impact of hypoxia-inducible factor (HIF)-1α and hexokinase-II (HK-II) expression on prognosis of gastric adenocarcinoma patients has not been clearly established. We identified all patients in Cancer Center of Sun Yat-Sen University who were diagnosed as gastric adenocarcinoma and underwent radical gastrectomy between January 1999 and December 2001. We used immunohistochemistry to determine the expressions of HIF-1α protein and HK-II in the surgical sections. We identified 188 patients with gastric adenocarcinoma for the final analysis. The positive rate of HIF-1α and HK-II were 110/188 (54.6%) and 40/188 (21.3%), respectively. Both HIF-1α and HK-II were all positively correlated with tumor size, lower differentiation, and tumor stage. Univariate analysis showed that advanced tumor stages (P < 0.001), tumor size (P = 0.003), HIF-1α expression (P < 0.001), and HK-II expression (P < 0.001) were all significantly associated with shorter survival. The multivariate Cox analysis revealed that tumor stage (P < 0.001), HIF-1α expression (P < 0.001), and HK-II expression (P = 0.002) remained independent prognostic variables for survival. In addition, there was a positive correlation of HIF-1α protein expression and HK-II (P = 0.022). Both HIF-1α and HK-II were overexpressed in gastric adenocarcinoma. The multivariate Cox analysis revealed that both of them were independent factors on survival of gastric adenocarcinoma patients.
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Acknowledgments
These work was funded by National Natural Science Foundation of China grant 30672408, Guangzhou Bureau of Science and Technology grant 2006Z3-E0041 and Sun Yat-Sen University 985 Program Initiation Fund (China). We gratefully thank the staff members in the Department of Medical Oncology and GI Surgery Oncology at Sun Yat-Sen University Cancer Center for their suggestion and assistance.
Part of the results of this article was present in the 2008 ASCO annual meeting as a poster.
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Qiu, Mz., Han, B., Luo, Hy. et al. Expressions of hypoxia-inducible factor-1α and hexokinase-II in gastric adenocarcinoma: the impact on prognosis and correlation to clinicopathologic features. Tumor Biol. 32, 159–166 (2011). https://doi.org/10.1007/s13277-010-0109-6
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DOI: https://doi.org/10.1007/s13277-010-0109-6