Project description:Several microRNAs which assosiate with Hirschsprung's disease were screened from 271 differentially expressed microRNAs between pathological changed colon segments of Hirschsprung's Disease and normal colon.These identified miRNAs could be used as diagnostic markers of HSCR segments.
Project description:To further study the mechnisms behind CRC metastasis, we employed microarray expression profiling as a discovery platform to identify differential expressed lncRNAs and mRNAs in non-metastastic and metastastic CRC tissues. Eight non-metastic CRC tissues and eight metastatic CRC tissues are collected and total RNA were extracted and purified. Differential lncRNA and mRNA expression profiles of non-metastatic and metastatic CRC tissues were obtained.
Project description:To further development of our lncRNA and mRNA expression approach to pancreatic ductal adenocarcinoma(PDAC), we have employed lncRNA and mRNA microarray expression profiling as a discovery platform to identify lncRNA and mRNA expression in pancreatic ductal adenocarcinoma.Human pancreatic ductal adenocarcinoma tissues and normal pancreatic tissues from PDAC donors and other duodenum diseases donors. analyze mRNA and lncRNA expression in pancreatic ductal adenocarcinoma (PDAC) by microarray platform
Project description:To address the role of miRNAs in Hirschsprund disease (HSCR), we carried out microRNA (miRNA) array analysis by using human intestinal samples obtained from HSCR patients and controls, and identified dysregulated miRNAs involved in the pathogenesis of HSCR.
Project description:Finding gene associations in rare diseases is frequently hampered by the reduced numbers of patients accessible. Conventional gene-based association tests rely on the availability of large cohorts, which constitutes a serious limitation for its application in this scenario. To overcome this problem we have used here a combined strategy in which a functional association study (pathway-based analysis) has been conducted to prioritize candidate genes in a Spanish cohort of 53 trios of short-segment Hirschsprung's disease that have been further validated in a larger population of 146 trios. The study revealed a strong association of 10 gene ontology (GO) modules related to signal transduction and its regulation, enteric nervous system (ENS) formation and other HSCR-related processes to the disease. A total of 10 new loci among the preselected candidates were found to be significantly associated to HSCR. This approach, based on the study of functionally-related gene sets, requires of lower sample sizes and opens new opportunities for the study of rare diseases. DNA derived from peripheral blood was hybridized to Affymetrix GeneChip® 500K mapping arrays. In total, 53 trios were analyzed consisting of affected child and their unaffected parents.