Project description:To explore the potential role of circular RNAs in gastric cancer, we employed microarray profiling as a discovery platform. Circular RNA expression was analyzed in three paired gastric cancer and adjacent non-tumor tissues using the Arraystar Human circRNA microarray V2 (Agilent one-color). Quantile normalization and statistical testing identified circRNAs differentially expressed between tumor and non-tumor tissues, providing candidate biomarkers for gastric cancer.
Project description:Purpose: To investigate the role and mechanism of mRNAs, long chain non-coding RNAs and circular RNAs in gastric cancer. Methods: RNA-seq of ribosomal RNA-depleted total RNA were performed to screen differential expressed mRNAs, long chain non-coding RNAs between paired gastric cancer tissues and adjacent normal tissues.For the linear RNA was digested with 3 U of RNase R per µg of RNA. Results: A total of 83672 mRNAs, 105998 long chain non-coding RNAs, 25441 distinct circRNAs were identified in these samples, and 13929 of these circRNAs were identified as novel circRNAs.
Project description:Copy number variation profiling of gastric tissues comparing gastric cancer tissues with matched adjacent noncancerous tissues. Goal was to determine the effects of chromosomal imbalances on gene expression and carcinogenesis or progression.
Project description:Copy number variation profiling of gastric tissues comparing gastric cancer tissues with matched adjacent noncancerous tissues. Goal was to determine the effects of chromosomal imbalances on gene expression and carcinogenesis or progression. 27 pairs of gastric tissues: gastric cancer tissues vs. matched adjacent noncancerous tissues.
Project description:The circRNAs expression profiles in 5 gastric cancer (GC) and their matched non-gastric cancer (non-GC) tissues were detected by human circRNA expression profile chips, and the differentially expression circRNAs between GC and matched non-GC tissues were then identified. A total of 713 circRNAs were differentially expressed in GC tissues vs. non-GC tissues (fold change≥2.0, p<0.05) among all the candidate circRNAs (62998) detected in both GC and non-GC tissues according to the T-test. 191/713 circRNAs were significantly upregulated in GC tissues, whereas 522/713 circRNAs were significantly downregulated in GC tissues. GO and KEGG pathway analyses showed that many dysregulated circRNAs may be functionally GC-related, thereby contributing to the development of GC.
Project description:To elucidate gene expression associated with copy number changes, we performed a genome-wide copy number and expression microarray analysis of 25 pairs of gastric tissues. 25 pairs of gastric tissues: gastric cancer tissues vs. matched adjacent noncancerous tissues.
Project description:Total RNA was isolated from ten pairs of matched gastric cancer tissues and non-cancerous tissues. RNAs were then pretreated with rtStar™ tRF&tiRNA Pretreatment Kit (Cat# AS-FS-005, Arraystar) and reverse-transcribed with rtStar™ First-Strand cDNA Synthesis Kit. The synthesed cDNA was used for realtime PCR to detect the differential expression of 353 tRF&tiRNA.
Project description:Purpose: To investigate the role and mechanism of circRNAs in gastric cancer. Methods: RNA-seq of ribosomal RNA-depleted total RNA and qRT-PCR were performed to screen differential expressed circRNAs between paired gastric cancer tissues and adjacent normal tissues. Results: A total of 57623 distinct circRNAs were identified in these samples, and 35120 of these circRNAs contained at least two independent back-spliced reads in at least two samples. Compared with circBase, we found that there were 29007 matched circRNAs and 28616 novel circRNAs in our study.