PMID: 15379322Sep 24, 2004Paper

The expression of mTOR and its substrates in oral squamous cell carcinoma

Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology
Yi LiuBing-zhi Yu

Abstract

The aim of this study was to observe the expression of mTOR (mammalian target of rapamycin) and its substrates in oral squamous cell carcinoma. mTOR and its substrates alpha1, alpha2, beta1, beta2 isoforms of p70 S6 kinase (p70S6k) and 4EBP1 were examined by means of RT-PCR, Western-blot test. The result of RT-PCR showed that in poorly differentiated tissue, the expression level of mTOR and its substrates alpha1, alpha2, beta1, beta2 isoforms of p70S6k increased obviously, while that of 4EBP1 decreased, while that in well differentiated tissue was second to it, the normal oral tissue was the last. The expression of Western-blot was the same as the RT-PCR. The expression of mTOR and its substrates differs in different types of oral squamous cell carcinoma. The result suggests that mTOR, p70S6K and 4EBP1 might play important roles in oral squamous cell carcinoma. It may be an important target protein to treat tumor in the future.

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