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Twist1 Is an Independent Prognostic Factor of Esophageal Squamous Cell Carcinoma and Associated with Its Epithelial–Mesenchymal Transition

  • Gastrointestinal Oncology
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

Twist1 is known to be involved in epithelial–mesenchymal transition (EMT) and tumor progression. However, its specific role is different depending on the type of cancer. The functional role and clinical significance of Twist1 in esophageal squamous cell carcinoma (ESCC) have been rarely studied.

Methods

We examined Twist1 expression in a total of 199 samples using immunohistochemistry and real-time reverse-transcription polymerase chain reaction (RT-PCR). We also studied the association of Twist1 with EMT of ESCC using tissue samples and in vitro models. In addition, we examined the changes in the whole-genome expression profiles of two ESCC cell lines after inducing upregulation of Twist1.

Results

Twist1 expression was increased in ESCC compared with that of normal esophagus (P < 0.01). We found that expression of Twist1 was strongly associated with poor prognosis on both univariate analysis [relative risk (RR) = 3.019, P = 0.000] and multivariate analysis (RR = 3.131, P = 0.000). In addition, we found that Twist1 expression was strongly correlated with EMT in ESCC tissues. Upregulation of Twist1 induced other EMT inducers in all three esophageal cancer cell lines investigated (TE1, TE8, and TE10). Twist1 also enhanced the migratory and invasive abilities of all three cell lines. Finally, microarray analysis of gene expression in the three ESCC cell lines revealed that Twist1 upregulation affected the expression of mainly cytoskeleton and extracellular matrix-related genes, which are directly related to cell morphology and movement.

Conclusions

Our study indicates that Twist1 is associated with EMT of esophageal squamous cell carcinoma and may be used as a diagnostic and prognostic biomarker in ESCC.

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Acknowledgment

This study was supported by Samsung Biomedical Research Institute grant C-B0-212-1 and by a grant of the Korea Healthcare technology R&D project, Ministry for Health & Welfare Affairs, Republic of Korea (A092255).

Conflict of interest

There is no commercial interest in the subject of study or source of any financial or material support.

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Correspondence to Seok-Hyung Kim MD.

Additional information

K.-W. Lee and J. H. Kim contributed equally to this study.

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Lee, KW., Kim, J.H., Han, S. et al. Twist1 Is an Independent Prognostic Factor of Esophageal Squamous Cell Carcinoma and Associated with Its Epithelial–Mesenchymal Transition. Ann Surg Oncol 19, 326–335 (2012). https://doi.org/10.1245/s10434-011-1867-0

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  • DOI: https://doi.org/10.1245/s10434-011-1867-0

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