Hypoxia-inducible factor-1 alpha, in association with inflammation, angiogenesis and MYC, is a critical prognostic factor in patients with HCC after surgery
: Despite well-studied tumor hypoxia in laboratory, little is known about the association with other pathophysiological events in the clinical view. We investigated the prognostic value of hypoxia-inducible factor-1 alpha (HIF-1alpha) in hepatocellular carcinoma (HCC), and its correlations with inflammation, angiogenesis and MYC oncogene.MethodS: In a random series of 110 HCC patients, the mRNA of HIF-1alpha, inflammation related factors (COX-2, MMP7, MMP9), angiogenesis related factors (VEGF, PDGFRA) and MYC in tumor tissue were detected by real-time RT-PCR and HIF-1alpha protein was assessed by immunohistochemistry.
The correlations between HIF-1alpha mRNA and the factors mentioned previously, the relationship between HIF-1alpha and clinicopathologic features, and the prognostic value were analyzed.
Results: : The expression of both HIF-1alpha mRNA and protein in HCC were independent prognostic factors for overall survival (OS) (P=0.012 and P=0.021, respectively) and disease-free survival (DFS) (P=0.004 and P=0.007, respectively) as well. Besides, the high expression of HIF-1alpha mRNA and protein proposed an advanced BCLC stageand more incidence of vascular invasion.
The mRNA of HIF-1alpha had significantly positive correlations to that of COX-2, PDGFRA, MMP7, MMP9, MYC, except VEGF. In addition to HIF-1alpha, COX-2 and PDGFRA were also independent prognosticators for OS (P=0.004 and P= 0.010, respectively) and DFS (P=0.010 and P= 0.038, respectively).
Conclusions: : HIF-1alpha in HCC plays an important role in predicting patient outcome.
It may influence HCC biological behaviors and affect the tumor inflammation, angiogenesis and act in concert with the oncogene MYC. Attaching importance to HIF-1alpha in HCC may improve the prognostic and therapeutic technique.
Author: Chen-Xin DaiQiang GaoShuang-Jian QiuMin-Jie JuMing-Yan CaiYong-Feng XuJian ZhouBo-Heng ZhangJia Fan
Credits/Source: BMC Cancer 2009, 9:418
Published on: 2009-12-01
Copyright by the authors listed above - made available via BioMedCentral (Open Access). Please
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