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Kato, H. et al.

Kato, Takita, Miyazaki, Nakajima, Fukai, Masuda, Fukuchi, Manda, Ojima, Tsukada, Kuwano,

Glut-1 glucose transporter expression in esophageal squamous cell carcinoma is associated with tumor aggressiveness.

BACKGROUND: Glucose transporter (Glut) proteins, which are membrane proteins responsible for the transport of glucose across cellular membranes, have six forms. To further elucidate the role of Glut-1 expression in esophageal squamous cell carcinoma, we examined the expression of Glut-1 protein immunohistochemically. MATERIALS AND METHODS: Immunohistochemical expression of Glut-1 was examined in surgically resected tissues from 95 patients with esophageal squamous cell carcinoma. RESULTS: Of the 95 esophageal carcinomas, 91 (95.8%) had some Glut-1 immunostaining in the membranes of the cancer cells. Positive staining (> 30% of cancer cells showing Glut-1 expression) was observed in 49 (51.6%) of the cases. Comparison of Glut-1 expression and clinicopathological characteristics in the 95 patients with esophageal cancer revealed significant associations between Glut-1 expression and tumor status (p < 0.001), lymph node status (p < 0.05), metastatic status (p < 0.01), and pathological stage (p < 0.001). The survival rates of patients with Glut-1-positive tumors were significantly lower than those of patients with Glut-1-negative tumors (log-rank p < 0.05). CONCLUSION: In conclusion, the level of Glut-1 expression may be a useful marker that can provide information on tumor aggressiveness and prognosis in patients with esophageal squamous cell carcinoma.[1]

References

Glut-1 glucose transporter expression in esophageal squamous cell carcinoma is associated with tumor aggressiveness. Kato, H., Takita, J., Miyazaki, T., Nakajima, M., Fukai, Y., Masuda, N., Fukuchi, M., Manda, R., Ojima, H., Tsukada, K., Kuwano, H. Anticancer Res. (2002) [Pubmed]

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