Project description:Galectin-7 expression was found to be strongly reduced in cervical cancer cell lines. The same tumor cell lines in which Galectin-7 was ectopically expressed exhibited significant decrease in their tumorigenic capacity in vitro and in vivo. The proteomic changes in the cervical cancer cell lines HeLa and SiHa after Galectin-7 re-expression were here quantified by SILAC.
Project description:Galectin-7 expression was found to be strongly reduced in cervical cancer cell lines. The same tumor cell lines in which Galectin-7 was ectopically expressed exhibited significant decrease in their tumorigenic capacity in vitro and in vivo. The proteomic changes in the cervical cancer cell lines HeLa and SiHa after Galectin-7 re-expression were here quantified by SILAC.
Project description:The Octamer-binding transcription factor-4 (Oct4) is upregulated in different malignancies, yet a paradigm for mechanisms of Oct4 post-embryonic re-expression is inadequately understood. In cervical cancer, Oct4 expression is higher in HPV-related than HPV-unrelated cervical cancers and this upregulation correlates with the expression of the E7 oncogene. We have reported that E7 affects the Oct4-transcriptional output and Oct4-related phenotypes in cervical cancer, however, the underlying mechanism remains elusive. Here, we characterize the Oct4-protein interactions in cervical cancer cells and reveal that Methyl-binding proteins (MBD2 and MBD3), are determinants of Oct4 driven transcription. E7 triggers MBD2 downregulation and TET1 upregulation, thereby disrupting the methylation status of the Oct4 gene. This coincides with an increase in the total DNA hydroxymethylation leading to the re-expression of Oct4 in cervical cancer and likely affecting broader transcriptional patterns. Our findings reveal a previously unreported mechanism by which the E7 oncogene can regulate transcription by increasing DNA hydroxymethylation and lowering the barrier to cellular plasticity during carcinogenesis.
Project description:To investigate the differences in mRNA profiles specially related to metabolism in cervical cancer, 5 primary cervical cancer tissues and 6 normal cervical tissues were collected. The differential expression of metabolism-associated-mRNA was verified using qRT-PCR.
Project description:This study is aimed in identification of gene expression profiles in cervical cancer and the role of specific genes in cervical carcinogenesis. Keywords: Gene expression in cervical cancer
Project description:Gene expression profiling of early stage cervical cancer tumours with and without lymph node metastasis, in order to predict lymph node metastasis before treatment. Subsequently, comparing gene expression profiles between healthy cervical tissue and early stage cervical cancer tissue. Keywords: Disease stage analysis