Discovery of Gene Expression Signature in the Overexpression of miR-145 in U87 glioma cell.
ABSTRACT: We have employed whole RNA microarray expression profiling as a discovery platform to identify genes regulated by overexpression of miR-145 in U87 glioma cell. Lentivirus containing miR-145 coding sequence was infected to U87 cell to make U87 overexpressing miR-145. We did genome microarray between U87 and U87 overexpressing miR-145. Total RNAs from U87 cell or U87 overexpressing miR-145 were extracted. Whole RNA microarray expression profiling was performed between them.
Project description:We analyzed the expression profiles of hsa-miR-145-5p or hsa-miR-31-5p-targeting genes relating to invasion or migration after co-overexpression of hsa-miR-145-5p and 31-5p Gene expression profiles of U87 cells after co-transfection with hsa-miR-145-5p and 31-5p mimics, and U87 cells after transfection miR mimic negative control
Project description:I developed a new culture system for hES cells; this system does not require supplementation with bFGF to obtain hES cells that are suitable for tissue engineering and regenerative medicine. This culture system employed mesenchymal stem cells derived from hES cells (hESC-MSCs) as autologous human feeder cells in the absence of bFGF. For pluripotency-related gene expression profiling, a cDNA microarray analysis was performed SNUhES3 cultured on the autofeeder hESC-MSCs layer maintained the undifferentiated state for 30 passages in a manner similar to the SNUhES3 cells on xenofeeder STO cell layer. To compare the pluripotency-related genes in SNUhES3 cells cultured on autofeeder or xenofeeder system, I used agilent one-color array. Two independant experiment performed.
Project description:Using microarray technology, we aimed to produce a list of genes that are downregulated in miR-151a-overexpressing U87 glioma cells in comparison with these overexpressing miR-NC. Overall design: Microarray expression profiling of mRNAs were conducted using RNA extracted from miR-151a-overexpressing and miR-NC overexpressing U87 glioma cells.
Project description:miR-145 is downregulated in multiple cancers. The introduction of miR-145 could alleviate the tumor burden in the pancreatic cancer mouse model. However, how miR-145 mediates the tumor suppression is still an open question. In this study, we aimed to identify the targets of miR-145 using a SILAC approach.
Project description:It is aimed to reveal overall trancriptional change in prostate cancer PC3 cells after ectopic expression of miR-145 Pre-mir-145 transfected PC3 cells were collected at 8, 16 and 24 hours after transfection and control untrasfected PC3 cells were used.
Project description:To characterize anaerobic stress-induced expression in adhE mutants, the microarray experiment was performed with two serotypes of wild type E. coli and their adhE mutants: (1) K-12 strain, wild type; (2) B strain, wild type; (3) BW25113, adhE mutants; (4) BL21(DE3), adhE mutants. Under anaerobic growth condition in glucose-containing complex medium, the wild type strains 1 and 2 grew well whereas the mutant strains 3 and 4 experienced anaerobic stress and grew after 24 hours and 48 hours, respectively. For each of the four strains, RNA sampling was done after six hours of growth under anaerobic condition. Only one replicate was obtained for each strain.
Project description:In this study, we aimed to explore the role of miR-145, which is downregulated in LSCC, on cancer stem cell potency of laryngeal cancer cells. Using microRNA expression profiling and experimental follow-up studies, we demonstrated the regulatory role of miR-145 in stem cell characteristics of Hep-2 cells. Based on these results, we propose that mir-145 might carry crucial roles in LSCC tumorigenesis, prognosis, metastasis, chemoresistance and recurrence through regulating stem cell properties of tumor cells. LSCC tissue samples and normal tissues were profiled for microRNA expression; cancer tissue profiles were compared with normal tissue profiles.
Project description:To investigate the gene expression in human corneal epithelial overexpressing hsa-miR-145 by transfection , we have employed Whole Human Genome Oligo Microarray (Agilent) as a screening platform to identify gene regulation. We discovered a differential gene expression in HCE cells transfected with hsa-mIR-145 against cells with scrambled sequences. Among them, genes related with corneal development, integrity, differentiation and inflammatory responses were found and this was validated by real-time PCR. HCE cells transfected with hsa-miR-145 or scrambled sequences were collected at 24 hours after transfection. Total RNA was extracted by Trizol/chloroform and purified with RNeasy mini spin column. RNA samples with 28S/18S ratios in the range of 1.4 to 1.8 were used for expression RNA profiling using Whole Human Genome Oligo Microarray (Agilent).
Project description:Hypoxia is used as a model for pulmonary arterial hypertension. MiR-145 is upregulated in pulmonary arterial hypertension in humans and female mice. It has been observed that miR-145 knock out mice have reduced vascular remodelling in response to hypoxia. Therefore, knock down of miR-145 could be used as a therapy for pulmonary arterial hypertension in humans. This microarray has helped us to elucidate some of the pathways in the miR-145 knock out mice that may protect against vascular remodelling. Wild type (WT) mice and homozygous miR-145 -/- female mice (strain C57BL6J/129SVEV) at 8 weeks old were exposed to chronic hypoxia for 2 weeks or maintained in normoxic conditions and pulmonary arteries were dissected at 10 weeks of age. This study contained 4 groups, WT hypoxic, WT normoxic, miR-145 -/-, hypoxic miR-145 -/- normoxic each containing 6 animals. All adjacent comparisons were made to ananlyse the data (a 2 by 2 design).
Project description:Transcriptional profiling of dark-grown Arabidopsis seedlings comparing SCR:PIF1/pifQ transgenic plant with pif1pif3pif4pif5 quadruple mutant (pifQ). Seedlings were grown under dark condition for 2.5 days. Goal was to determine the effects of endodermal PIF1 in dark-grown seedlings. Two-condition experiment, SCR:PIF1/pifQ vs. pifQ Biological replicates: 3 pifQ replicates, 3 SCR:PIF1 replicates.