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:The bat offers an alternative paradigm to the standard mouse and chick model of limb development as it has extremely divergent forelimbs (long digits supporting a wing) and hindlimbs (short digits and claws) due the distinct requirements of both aerial and terrestrial locomotion. We used a cross-species microarray approach to identify differentially expressed (DE) genes between the bat (Minniopterus natalensis) forelimb and hindlimb autopods at Carollia developmental stages (CS) 16 and CS17, and between the bat (CS17) and mouse (E13.5) forelimb autopods. Several DE genes were identified, including two homeobox genes, Meis2, a proximal limb-patterning gene, and Hoxd11, a gene involved in digit elongation. Both genes are significantly over-expressed in the developing bat forelimb as compared to the hindlimb and equivalently staged mouse forelimbs.
Project description:To explore the role of HIC1 deletion in regulating prostate cancer(PCa) microenvironment development, Human Gene Expression Microarrays were searched for altered genes upon HIC1 knockout expression in PC3 cells. According to fold-change screening between HIC1-knockout and its respective control cells, both up-regulated and down-regulated genes were shown.
Project description:The bat offers an alternative paradigm to the standard mouse and chick model of limb development as it has extremely divergent forelimbs (long digits supporting a wing) and hindlimbs (short digits and claws) due the distinct requirements of both aerial and terrestrial locomotion. We used a cross-species microarray approach to identify differentially expressed (DE) genes between the bat (Minniopterus natalensis) forelimb and hindlimb autopods at Carollia developmental stages (CS) 16 and CS17, and between the bat (CS17) and mouse (E13.5) forelimb autopods. Several DE genes were identified, including two homeobox genes, Meis2, a proximal limb-patterning gene, and Hoxd11, a gene involved in digit elongation. Both genes are significantly over-expressed in the developing bat forelimb as compared to the hindlimb and equivalently staged mouse forelimbs. A reference design was used in this microarray experiment. A pool of left and right mouse forelimb autopods from 24 embryos was used as the reference sample. This sample was directly compared to individual CS16 and CS17 bat fore- and hindlimbs (left and right of one individual pooled) that were classified as the test conditions. Four experimental sessions were performed using an independently amplified mouse reference pool and 4 biological repeats for the bat limbs. These samples were co-hybridised to OPERON Mouse OpArray (ver. 4.0) spotted oligonucleotide slides to perform a competitive Cross-Species Hybridisation experiment. The bat aRNA (test) samples were labelled with Cy3 dye (green signal), the mouse aRNA (reference) sample was labelled with Cy5 dye (red signal).
Project description:Transcriptome comparison of bat (Miniopterus natalensis) forelimb and hindlimb autopods at developmental stages CS16 and CS17 and E13.5 mouse forelimb autopods
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:To determine the effects of long term deletion of the transcriptional repressor Hypermethylated in cancer 1 (Hic1) on skeletal muscle, samples were collected of both wild type mice and those conditionally deleted for Hic1 and profiled by RNA sequencing. Aspects of muscle homeostasis were negatively impacted, highlighting cell and non cell autonomous roles for Hic1 in maintaining functional MPs and muscle tissue.
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.