Project description:Hypermethylated in cancer 1 (HIC1) represents a prototypic tumor suppressor gene frequently inactivated by DNA methylation in many types of solid tumors. The gene encodes a sequence-specific transcriptional repressor controlling expression of several genes involved in the cycle or stress control. In this study, we employed a conditional Hic1 allele to identify genes influenced by the loss of Hic1.
Project description:The tumor suppressor gene HIC1 (Hypermethylated in Cancer 1) is essential for mammalian development and is epigenetically silenced in many human tumors. Functionally, HIC1 is involved in a complex pathway regulating P53 tumor-suppression activity. HIC1 encodes a sequence-specific transcriptional repressor containing five Krüppel-like C2H2 zinc fingers but only a few genes regulated by HIC1 have been reported, including SIRT1. Keywords: Time Series Design
Project description:This study aimed to further our understanding of the role that hypermethylatioted in cancer 1 (HIC1) plays in prostate cancer (PCa) development. Microarrays were searched for some genes that had correlated expression with HIC1 mRNA. Our data showed that HIC1 promoter hypermethylation was presented in cell lines, tissues and plasma of PCa patients. According to fold-change screening between restoring expression of HIC1 and its respective control cells, both up-regulated and down-regulated genes were commonly observed in PC3 and C4-2B cells. The restoring expression HIC1 in PCa lines were respectively noted as PC3-HIC1 and C4-2B-HIC1 cells, and the respective controls were noted as C4-2B-GFP and PC3-GFP cells.
Project description:This study aimed to further our understanding of the role that hypermethylatioted in cancer 1 (HIC1) plays in breast cancer progression. Microarrays were searched for some genes that had correlated expression with HIC1 mRNA. According to fold-change screening between restoring expression of HIC1 and its respective control cells in MDA-MB-231 cells, or HIC1 knockdown and its respective control cells in HBL100, both up-regulated and down-regulated genes were shown. The restoring expression HIC1 in MDA-MB-231 cells were respectively noted as MDAMB-231-HIC1 and the respective controls were noted as MDA-MB-231-GFP cells. HIC1 knockdown in HBL100 cells were noted as HBL100-shHIC1 and the respective control HBL100-shCtrl cell.
Project description:To identify the target of miR-212, miR-132 and HIC1, we have employed whole genome microarray expression profiling on the human breast cancer MCF7 cells. To generate miR-212/132 or HIC1 inducible MCF7 cells, doxycycline-dependent miR-212/132 or HIC1 gene expression system was used. Either Tet-ON miR-212/132 MCF7 or Tet-ON HIC1 MCF7 were treated with 1μg/ml of Doxycycline for 36 hours with EMEM containing 0.01 mg/ml bovine insulin and 10% FCS. Two independent experiments were performed.
Project description:To investigate the effect of the mesenchymal quiescence regulator, Hic1, on forelimb development, we collected forelimbs from conventional Hic1 knockout animals to animals with a limb specific Hic1 knockout driven by the proposed limb mesenchyme specific Prrx1-Cre line.
Project description:To explore the role of HIC1 silencing in regulating PCa EMT development, Human Gene Expression Microarrays were searched for altered genes upon silencing HIC1 expression in C4-2B and DU145 cells. According to fold-change screening betweenHIC1-silenced and its respective control cells, both up-regulated and down-regulated genes were shown. Human PCa cell lines C4-2B and DU145 were transfected with lenti-virus (shRNA targeting HIC1 and respective control). HIC1-silenced cells were respectively noted as C4-2B-shHIC1 and DU145-shHIC1. Their respective control cells were respectively noted as C4-2B-shctrl and DU145-shctrl.
Project description:The tumor suppressor gene HIC1 (Hypermethylated in Cancer 1) is essential for mammalian development and is epigenetically silenced in many human tumors. Functionally, HIC1 is involved in a complex pathway regulating P53 tumor-suppression activity. HIC1 encodes a sequence-specific transcriptional repressor containing five Krüppel-like C2H2 zinc fingers but only a few genes regulated by HIC1 have been reported, including SIRT1. Experiment Overall Design: We performed genome-wide expression profiling analyses to identify new HIC1 target genes, in U2OS human osteosarcoma cells infected with adenoviruses expressing either HIC1 or GFP as control.