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Expression of VEGF-D, SMAD4, and SMAD7 and Their Relationship with Lymphangiogenesis and Prognosis in Colon Cancer

  • Original Article
  • Published:
Journal of Gastrointestinal Surgery

Abstract

Aim

The vascular endothelial growth factor (VEGF) and TGF-β1 pathways play important roles in cancer. However, few studies have evaluated the expression and roles of VEGF-D, SMAD4, and SMAD7 in colon cancer, and the conclusions remain controversial. To clarify the roles of VEGF-D, SMAD4, and SMAD7 in colon cancer, we examined their expression and evaluated correlations with lymphangiogenesis, prognosis, and chemotherapeutic outcome.

Methods

The expression of VEGF-D, SMAD4, and SMAD7 was immunohistochemically examined in 251 primary colon cancer samples obtained from the Harbin Medical University.

Results

The expression of VEGF-D, SMAD4, and SMAD7 was identified in 71.7, 41.0, and 69.7 % of samples, respectively. Positive expression of VEGF-D and SMAD7 and lost expression of SMAD4 were significantly correlated with lymph node metastasis and high lymphatic vessel density. VEGF-D and SMAD7 were found to be independent indicators of prognosis and chemotherapy outcome, and positive expression of either VEGF-D or SMAD7 was associated with significantly shorter overall survival and disease-free survival (OS and DFS) than negative expression in all 251 patients (P < 0.001 for OS and DFS) and patients following chemotherapy (P < 0.001 for OS and DFS).

Conclusion

VEGF-D, SMAD4, and SMAD7 were involved in lymphangiogenesis and lymph node metastasis. VEGF-D and SMAD7 can serve as predictors of prognosis and chemotherapeutic outcome in colon cancer.

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Acknowledgments

This study was supported by the Natural Science Foundation of Heilongjiang Province, China, grant number: D200920.

Author Contributions

All authors contributed to the design of this study and drafting of the article. The analysis and interpretation of data were completed by Fei Su, Xuemei Li, and Baoquan Liu, colon cancer samples were collected by Yafang Zhang and Jing Ma, and immunohistochemical staining was carried out by Xuemei Li, Kai You, Mingwei Chen, and Jianbing Xiao.

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Correspondence to Baoquan Liu.

Ethics declarations

Informed consent was obtained from all patients and the study protocol was approved by the Ethics Committee of Harbin Medical University.

Conflict of Interest

The authors declare that they have no conflict of interest.

Additional information

Fei Su and Xuemei Li contributed equally to this work.

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Su, F., Li, X., You, K. et al. Expression of VEGF-D, SMAD4, and SMAD7 and Their Relationship with Lymphangiogenesis and Prognosis in Colon Cancer. J Gastrointest Surg 20, 2074–2082 (2016). https://doi.org/10.1007/s11605-016-3294-9

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  • DOI: https://doi.org/10.1007/s11605-016-3294-9

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