Project description:microRNA profiling of 10 human healthy liver and 9 human hepatocellular carcinoma tissues using bead-based technology microRNA expression profiling was performed using freshly frozen healthy liver and hepatocellular carcinoma tissues obtained at the time of surgical treatment. keywords: healthy liver, hepatocellular carcinoma, expression array, microRNA
Project description:To identify the prognostic subtypes of hepatocellular carcinoma with potential progenitor cell origin. Keywords: disease state design
Project description:To identify the prognostic subtypes of hepatocellular carcinoma with potential progenitor cell origin. Keywords: disease state design We used our in-house oligonucleotide microarray data of 238 HBV-positive HCC cases.
Project description:<p>Genetic alterations in specific driver genes lead to disruption of cellular pathways and are critical events in the instigation and progression of hepatocellular carcinoma. As a prerequisite for individualized cancer treatment, we sought to characterize the landscape of recurrent somatic mutations in hepatocellular carcinoma. We performed whole exome sequencing on 87 hepatocellular carcinomas and matched normal adjacent tissues to an average coverage of 59x. The overall mutation rate was roughly 2 mutations per Mb, with a median of 45 non-synonymous mutations that altered the amino acid sequence (range 2 to 381). We found recurrent mutations in several genes with high transcript levels: TP53 (18%), CTNNB1 (10%), KEAP1 (8%), C16orf62 (8%), MLL4 (7%) and RAC2 (5%). Significantly affected gene families include the nucleotide-binding domain and leucine rich repeat containing family, calcium channel subunits, and histone methyltransferases. In particular, the MLL family methyltransferases for histone H3 lysine 4 were mutated in 20% of tumors. Conclusion: The NFE2L2-KEAP1 and MLL pathways are recurrently mutated in multiple cohorts of hepatocellular carcinoma.</p>