Project description:Breast cancer (BC) is the most commonly diagnosed neoplasm in women worldwide and a well-recognized heterogeneous pathology classified into four molecular subtypes: Luminal A, Luminal B, HER2-enriched and Basal-like, each one with different biological and clinical characteristics. It is well recognize that clinical and molecular heterogeneity of BC is driven in part by mRNA and lncRNAs. We profiled mRNAs and lncRNA in 75 adjuvant tumors using an Affymetrix microarray platform.
Project description:1. Evaluate the diagnostic value of long noncoding RNA (CCAT1) expression by RT-PCR in peripheral blood in colorectal cancer patients versus normal healthy control personal.
2. Evaluate the clinical utility of detecting long noncoding RNA (CCAT1) expression in diagnosis of colorectal cancer patients & its relation to tumor staging.
3. Evaluate the clinical utility of detecting long noncoding RNA (CCAT1) expression in precancerous colorectal diseases.
4. Compare long noncoding RNA (CCAT1) expression with traditional marker; carcinoembryonic antigen (CEA) and Carbohydrate antigen 19-9 (CA19-9) in diagnosis of colorectal cancer.
Project description:To understand the role of long non-coding RNAs and interaction with coding RNAs in bladder urothelial cell carcinoma (BUCC), we performed genome-wide screening long non-coding RNAs and coding RNAs expression on primary BUCC tissues and normal tissues using long non-coding RNA array (Agilent plateform (GPL13825). By comparing these two groups, significantly differentially expressed lncRNAs and coding RNAs were identified. We further identifed a subset of long noncoding RNAs and their correlation with neighboring coding genes using bioinformatic tools. This analysis provides foundamental understaning of transcriptomic landscape changing during bladder carcinogenesis. 12 BUCC primary tumors and 3 normal tissues were used for long noncoding RNA array experiments which including long non-coding RNAs and coding RNAs. The differential expression of subset of long noncoding RNAs and their interaction with coding RNAs in BUCC compared with normal tissue will be identified with comtational analysis.
Project description:This SuperSeries is composed of the following subset Series: GSE37705: Effects of the long noncoding RNA Malat1 on gene expression [Mouse430_2] GSE37706: Effects of the long noncoding RNA Malat1 on gene expression [MoEx-1_0-st] Refer to individual Series
Project description:GM0637 cell were treated with or without DNA damaging agent neocarzinostatin (NCS), and cells were harvested after 4 hours and 8 hours for the microarray analyses of whole-genome long noncoding RNAs. To examine how long noncoding RNAs are regulated in the DNA damage response, we assessed the genome-wide long noncoding RNA expression in GM0637 cells treated with or without DNA damage
Project description:In this study, we have integrated RNA-seq data from subcellular fractionated RNA (i.e., cytoplasm, nucleoplasm, and chromatin-associated) with GRO-seq data using a novel bioinformatics pipeline. This has yielded a comprehensive catalog of polyadenylated lncRNAs in MCF-7 cells, about half of which have not been annotated previously and about a quarter of which are estrogen-regulated. Knockdown of selected lncRNAs, such as lncRNA152 and lncRNA67 followed by RNA-seq suggest that these lncRNAs regulate the expression of cell cycle genes. characterization of long noncoding RNAs
Project description:Background: Long noncoding RNAs (lncRNAs) have emerged recently as a new class of genes regulating cellular processes, such as cell growth and apoptosis. The SPRY4 intronic transcript 1 (SPRY4-IT1) is a 708-bp lncRNA on chromosome 5 with a potential functional role in tumorigenesis. The clinical significance of SPRY4-IT1 and the effect of SPRY4-IT1 on cancer progression are unclear. Methods: Quantitative reverse transcriptase PCR (qRT-PCR) was performed to investigate the expression of SPRY4-IT1 in 48 breast cancer tissues and four breast cancer cell lines. Gain and loss of function approaches were used to investigate the biological role of SPRY4-IT1 in vitro. Microarray bioinformatics analysis was performed to identify the putative targets of SPRY4-IT1, which were further verified by rescue experiments, as well as by western blotting and qRT-PCR. Results: SPRY4-IT1 expression was significantly upregulated in 48 breast cancer tumor tissues compared to normal tissues. Additionally, increased SPRY4-IT1 expression was associated with larger tumor size and an advanced pathological stage in breast cancer patients. Knockdown of SPRY4-IT1 significantly suppressed proliferation and caused apoptosis of breast cancer cells in vitro. Furthermore, we discovered ZNF703 was a direct target of SPRY4-IT1 and was downregulated by SPRY4-IT1 knockdown. Moreover, we demonstrated for the first time that ZNF703 is a genetic driver in ER (-) breast carcinoma cells. Conclusions: SPRY4-IT1 is a novel prognostic biomarker and a potential therapeutic candidate for breast cancer. Five samples are analyzed, including three control groups and two small interfering RNA groups