Gene expression microarray analysis of NCK1-AS1 knockdown in CaSki cells
ABSTRACT: To further explore the potential molecular mechanisms of NCK1-AS1 in CC cells，Human Transcriptome Array 2.0 analysis was performed to investigate the differential gene expression profiles between NCK1-AS1 knockdown group and control group in CaSki cells. Overall design: To investigate the differential gene expression profiles between NCK1-AS1 knockdown group and control group in CaSki cells.
INSTRUMENT(S): [HTA-2_0] Affymetrix Human Transcriptome Array 2.0 [transcript (gene) version]
Project description:Long non-coding RNAs (lncRNA) have been shown to play crucial roles in tumorigenesis. Little is known about lncRNA RAD51-AS1 in diseases. Here, we investigated the role of RAD51-AS1 in Epithelial ovarian cancer. Silencing RAD51-AS1 inhibited proliferation through cell cycle arrest and promotion in apoptosis, both in vitro and in vivo. But the mechanism of RAD51-AS1 downstream regulation remains unclear. In order to identify the downstream regulation of RAD51-AS1 in epithelial ovarian cancer, we used antisene oligotides targeting RAD51-AS1 / negative control to transfect Skov3.ip cells. Then, we used microarrays to identified differential expression genes and to look for possible target genes by knockdown RAD51-AS1 expression. Overall design: SKOV3.ip cells transfected with antisene oligotides targeting RAD51-AS1 or negative control siRNA were analyzed. There are three samples in each group.
Project description:We identified that SLC25A25-AS1 was a lncRNA influencing radiation response. Therefore, we aimed to explore more biological roles of SLC25A25-AS1 in this process. Towards this end, we used RNA interference (RNAi)-mediated knockdown of SLC25A25-AS1 in HT29 and SW480 to explore the changes of mRNA expression profiles and explore the phenotype outcomes. Overall design: A four sample study using total RNA collected from three cell lines (HT29 and SW480) with or without knockdown of SLC25A25-AS1.
Project description:Prostate cancer is the most common cancer in men and AR downstream signalings promote prostate cancer cell proliferation. We identified POTEF-AS1 is an androgen-regulated non-coding RNA gene. In order to investigate the POTEF-AS1 function in prostate cancer cells, we performed gene expression in AR-positive prostate cancer cell lines after siPOTEF-AS1 treatment. We also treated cells with vehicle or androgen to analyzed the effects of POTEF-AS1 on AR function. Overall design: Observation of androgen dependent gene expression changes after treatment with siRNAs targeting POTEF-AS1 wiith microarray.
Project description:Prostate cancer is the most common cancer in men and AR downstream signalings promote prostate cancer cell proliferation. We identified a novel androgen-regulated long non-coding (lnc) RNA, SOCS2-AS1. In order to investigate the SOCS2-AS1 function in prostate cancer cells, we performed gene expression in AR-positive prostate cancer cell lines (LNCaP and LTAD) after siSOCS2-AS1 or siSOCS2 treatment. We also treated cells with vehicle or androgen to analyzed the effects of siSOCS2-AS1 on AR function. Observation of androgen dependent gene expression changes after treatmet with siSOCS2-AS1 with microarray.
Project description:Objectives: Long non-coding RNAs (lncRNAs) have been shown to play important roles in the development and progression of cancer. However, functional lncRNAs and their downstream mechanisms are largely unknown in the molecular pathogenesis of esophageal adenocarcinoma (EAC) and its progression. Design: lncRNAs that are abnormally upregulated in EACs were identified by RNA-seq analysis, followed by quantitative RT-PCR (qRTPCR) validation using tissues from 31 EAC patients. Cell biological assays in combination with siRNA-mediated knockdown were performed in order to probe the functional relevance of these lncRNAs. Results: We discovered that a lncRNA, HNF1A-AS1, is markedly upregulated in human primary EACs relative to their corresponding normal esophageal tissues (mean fold change 7.2, p<0.01). We further discovered that HNF1A-AS1 knockdown significantly inhibited cell proliferation and anchorage independent growth, suppressed S-phase entry, and inhibited cell migration and invasion in multiple in vitro EAC models (p<0.05). A gene ontological analysis revealed that HNF1A-AS1 knockdown preferentially affected genes that are linked to assembly of chromatin and the nucleosome, a mechanism essential to cell cycle progression. The well-known cancer-related lncRNA, H19, was the gene most markedly inhibited by HNF1A-AS1 knockdown. Consistent to this finding, there was a significant positive correlation between HNF1A-AS1 and H19 expression in primary EACs (p<0.01). In order to identify novel oncogenic lncRNAs in esophageal adenocarcinogenesis, we carried out RNA-seq of a matched NE-BE-EAC tissue pair
Project description:ASYMMETRIC LEAVES 1 (AS1) is an important transcription factor for leaf development in Arabidopsis. But how it regulates downstream genes is largely unknown. We found a co-factor of AS1, LIKE HETEROCHROMATIN PROTEIN 1 (LHP1), also named as TERMINAL FLOWER 2 (TFL2), a PcG protein in Arabidopsis. To further investigate how AS1 and LHP1 co-regulate downstream genes at the genome level, we perform the transcriptome analysis of as1-1, tfl2-1, and as1-1 tfl2-1 in comparison with wild type (WT). Overall design: 12-day-old seedlings of wild-type (WT), as1-1, tfl2-1 and as1-1 tfl2-1 grown in normal growth condition were used for RNA extraction and microarray. Duplicate samples were analyzed.
Project description:Castration-resistant prostate cancer (CRPC) that arise after the failure of androgen deprivation therapy is a leading cause of deaths in prostate cancer patients. HOXD-AS1 is reported to play a role in bladder cancer and neuroblastoma. However, its function and underlying mechanism in CRPC remains unknown. The goal of this study is to identify the target genes of HOXD-AS1 in prostate cancer. Our results inditcate that the genes regulated by HOXD-S1 involved in a variety of biological functions, such as proliferation and and Androgen Receptor signaling. Overall design: prostate cancer cell lineLNCaP was transfected with the contol siRNA or two different HOXD-AS1 siRNA for 48h. The RNA of the transfected cells was extracted and hybridized on Affymetrix microarrays. We indentified the putative target genes of HOXD-AS1 in both HOXD-AS1 siRNAs by comparing the diferent expressed genes among control, si-HOXD-AS1-1 and si-HOXD-AS1-2. We futher validated the data of microarray in LNCaP and PC-3 by RT-qPCR and Western bloting.
Project description:Long noncoding RNA (lncRNA) play important roles in the pathogenesis of cancer. LncRNA SBF2-AS1is unregulated in lung cancer tissues, while its biological function and molecular mechanism are largely unknown. RNA sequencing results suggest cell cycle-related genes are altered after SBF2-AS1 knockdown. In vivo and in vitro experiments confirm SBF2-AS1 could promote tumorigenesis of lung cancer. Further experiments prove SBF2-AS1 could bind with miR-338-3p and miR-362-3p to regulate various cell cycle-related genes, including E2F1. These results indicate the existence of ceRNA network driven by SBF2-AS1 through sponging miRNAs. Overall design: A549 cells are plated into 6-well plate and then transfected small interfering RNA (siRNA) specifically targeting SBF2-AS1 or negative control (NC) siRNA. 24 hours after transfection, cells are harvested and extract total RNA with TRIZol reagent.
Project description:Analysis of tiling array data identified 358 genomic regions commonly enriched by the AS1 and T7 antibody datasets. AS1 antibody data set (AS1 antibody versus mock) and the T7 antibody data set (T7 antibody versus mock)