To our knowledge, Dorsomorphin solubility dmso this is the first report showing that ectopic expression of CENP-H could significantly enhance proliferation of tongue cancer cells though upregulation of Survivin expression. However, the molecular mechanisms by which CENP-H upregulate Survivin expression need to be investigated in future. Conclusion In conclusion, expression of CENP-H was associated with clinical stage and T classification of tongue cancer, as well as poor prognosis of tongue cancer patients. Down-regulation of CENP-H can inhibit the proliferation of tongue cancer cells. These findings

suggested that CENP-H play an important role in development and progression of tongue cancer. It also might be a valuable prognostic biomarker for early stage tongue cancer patients. Acknowledgements Grant support: Science and Technology Bureau Foundation of Guang Zhou (2008Z1-E201). National Natural Science Foundation of China grants, 30470666, and 30570701, 30670803, 30770836. The Ministry of Science RG7420 mw and Technology

of China grant 2004CB518708, the National Natural Science Foundation of Guangdong Province, China, grants 04009427 and 5001749, and a key grant from 985-II project. Municipal Science and Technology Bureau Foundation of Guang Zhou (2060302). Electronic supplementary material Additional file 1: Validation for the specificity of CENP-H antibody. Tongue cancer sections were incubated with CENP-H antibody alone or previously co-incubated and thereby blocked with recombinant CENP-H polypeptide. (DOC 5 MB) References 1. Fukagawa T: Assembly of kinetochores in vertebrate cells. Exp Cell Res 2004, 296: 21–27.CrossRefPubMed 2. Cleveland DW, Mao Y, Sullivan KF: Centromeres and kinetochores: Farnesyltransferase from epigenetics to mitotic checkpoint signaling. Cell 2003, 112: 407–421.CrossRefPubMed 3. Westermann S, Cheeseman IM, Anderson S, Yates JR 3rd, Drubin DG, Barnes G: Architecture of the budding yeast kinetochore reveals a conserved molecular core. J Cell Biol 2003, 163: 215–222.CrossRefPubMed 4. Cheeseman IM,

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