Summary
This study aims to find good markers for predicting the prognosis of patients with esophageal squamous cell carcinoma (ESCC). Vasculogenic mimicry (VM) and the expression of hypoxia inducible factor-lα (HIF-lα)/E-cad protein in ESCC were investigated by immunostaining. The association between VM, HIF-lα/E-cad and clinicopathologic characteristics and 5-year-survival rate of patients with ESCC was analyzed. A total of 160 ESCC specimens were involved in this study and 28 specimens of normal esophageal mucosa served as controls. VM channels were identified in 78 (48.75%) of the 160 ESCC specimens and none of the normal esophageal mucosa was found to have VM. The rates of high-expression of HIF-lα and E-cad in ESCC were 43.75% and 38.75%, while the rates in control were 17.86% and 71.43%, respectively (P<0.05 for all). VM and the expression levels of HIF-lα and E-cad were significantly related to lymph node metastasis, serosa infiltration, PTNM staging and 5-year-survival rates of patients with ESCC (P<0.05 for all). VM was positively correlated with HIF-lα but negatively with E-cad, and HIF-lα was negatively correlated with E-cad (P<0.001 for all). The 5-year-survival rate of patients with ESCC was 6.41% (5/78) in VM group and 65% (52/82) in non-VM group, 7.14% (5/70) in high HIF-lα expression group and 57.78% (52/90) in low HIF-lα expression group. Oppositely, the 5-year-survival rate in high E-cad expression group was 80.65% (50/62) and that in low E-cad expression group was 7.37% (7/98) (P<0.05 for all). Cox multifactor regression analysis indicated that lymph node metastasis, PTNM stage, VM and expression levels of HIF-lα and E-cad were independent risk factors of patients with ESCC (P<0.05 for all). Combined detection of VM, HIF-lα and E-cad plays an important role in predicting the invasion, metastasis and prognosis of patients with ESCC.
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This project was supported by grants from the National Natural Science Foundation of China (No. 81171465) and Natural Science Research Program of Education Bureau of Anhui Province (No. KJ2013B141).
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Chai, Dm., Bao, Zq., Hu, Jg. et al. Vasculogenic mimicry and aberrant expression of HIF-lα/E-cad are associated with worse prognosis of esophageal squamous cell carcinoma. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 33, 385–391 (2013). https://doi.org/10.1007/s11596-013-1129-4
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DOI: https://doi.org/10.1007/s11596-013-1129-4