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https://www.readbyqxmd.com/read/28615056/oct4-transcriptionally-regulates-the-expression-of-long-non-coding-rnas-neat1-and-malat1-to-promote-lung-cancer-progression
#1
Jayu Jen, Yen-An Tang, Ying-Hung Lu, Che-Chung Lin, Wu-Wei Lai, Yi-Ching Wang
BACKGROUND: Oct4, a key stemness transcription factor, is overexpressed in lung cancer. Here, we reveal a novel transcription regulation of long non-coding RNAs (lncRNAs) by Oct4. LncRNAs have emerged as important players in cancer progression. METHODS: Oct4 chromatin-immunoprecipitation (ChIP)-sequencing and several lncRNA databases with literature annotation were integrated to identify Oct4-regulated lncRNAs. Luciferase activity, qRT-PCR and ChIP-PCR assays were conducted to examine transcription regulation of lncRNAs by Oct4...
June 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28545036/the-long-non-coding-rna-neat1-enhances-epithelial-to-mesenchymal-transition-and-chemoresistance-via-the-mir-34a-c-met-axis-in-renal-cell-carcinoma
#2
Fei Liu, Na Chen, Yanchun Gong, Ruihai Xiao, Weichao Wang, Zhengyue Pan
Long non-coding RNAs (lncRNAs) have emerged as new gene regulators and prognostic markers in various cancers. Although the lncRNA nuclear enriched abundant transcript 1 (NEAT1) has been associated with tumorigenesis, its functions in renal cell carcinoma (RCC) have not been elucidated. We determined that NEAT1 is up-regulated in RCC tissue compared to corresponding non-tumor tissue. High NEAT1 expression was associated with tumor progression and poor survival in RCC patients. NEAT1 knockdown suppressed RCC cell proliferation by inhibiting cell cycle progression, and inhibited RCC cell migration and invasion by reversing the epithelial-to- mesenchymal transition phenotype...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28543758/deregulated-expression-of-long-non-coding-rna-uca1-in-multiple-myeloma
#3
L Sedlarikova, B Gromesova, V Kubaczkova, L Radova, J Filipova, J Jarkovsky, L Brozova, R Velichova, M Almasi, M Penka, R Bezdekova, M Stork, Z Adam, L Pour, M Krejci, P Kuglík, R Hajek, S Sevcikova
OBJECTIVES: Long non-coding RNAs (lncRNAs) are RNA transcripts longer than 200 nucleotides that are not translated into proteins. They are involved in pathogenesis of many diseases including cancer and have a potential to serve as diagnostic and prognostic markers. We aimed to investigate lncRNA expression profiles in bone marrow plasma cells of newly diagnosed multiple myeloma (MM) patients in comparison to normal bone marrow plasma cells of healthy donors (HD) in a 3-phase biomarker study...
May 25, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28526689/long-non-coding-rna-neat1-promotes-hepatocellular-carcinoma-cell-proliferation-through-the-regulation-of-mir-129-5p-vcp-i%C3%AE%C2%BAb
#4
Luo Fang, Jiao Sun, Zongfu Pan, Yu Song, Like Zhong, Yiwen Zhang, Yujia Liu, Xiaowei Zheng, Ping Huang
BACKGROUND: Long non-coding RNA (lncRNA) nuclear-enriched abundant transcript 1 (NEAT1) plays an important role in the pathogenesis and development of several types of cancer. However, the functional mechanism of NEAT1 in hepatocellular carcinoma (HCC) remains unclear. METHODS: The NEAT1 and miR-129-5p expression in HCC tissues and cell lines were quantified by means of qPCR. The effects of NEAT1 expression inhibition or up-regulation in HCC cell lines were analyzed in terms of cell viability and apoptosis...
May 19, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28507281/high-expression-of-long-non-coding-rna-neat1-indicates-poor-prognosis-of-human-cancer
#5
Jian Fang, Fuhao Qiao, Jingjing Tu, Jinfeng Xu, Fangfang Ding, Yun Liu, Bufugdi Andreas Akuo, Jianpeng Hu, Shihe Shao
The nuclear paraspeckle assembly transcript 1 (NEAT1) is a long non-coding RNA. Many studies have reported that NEAT1 plays critical oncogenic roles and facilitates tumorigenesis of various human cancers. High NEAT1 expression is associated with a poor prognosis in cancer patients. This meta-analysis was conducted to assess the association between NEAT1 levels and survival times of cancer patients. Overall survival (OS) was the primary endpoint. Thirteen publications with 1,496 cancer patients from 5 databases (PubMed, EMBASE, Cochrane Library, Wiley Online Library, and Medline) met the criteria for this meta-analysis...
April 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/28493837/long-non-coding-rnas-may-serve-as-biomarkers-in-breast-cancer-combined-with-primary-lung-cancer
#6
Xianfeng Ding, Yuhan Zhang, Hongjian Yang, Weimin Mao, Bo Chen, Shifeng Yang, Xiaowen Ding, Dehong Zou, Wenju Mo, Xiangming He, Xiping Zhang
Long non-coding RNAs (lncRNAs) have been shown to play important regulatory role in certain type of cancers biology, including breast and lung cancers. However, the lncRNA expression in breast cancer combined with primary lung cancer remains unknown. In this study, databases of the Cancer Genome Atlas (TCGA) and the lncRNA profiler of contained candidate 192 lncRNAs were utilized. 11 lncRNAs were differentially expressed in breast cancer, 9 candidate lncRNAs were differentially expressed in lung cancer. In order to find the aberrant expression of lncRNAs in breast cancer combined with primary lung cancer, seven samples of primary breast cancer and lung cancer were studied for the expression of selected lncRNAs...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28483659/the-long-non-coding-rna-neat1-is-an-important-mediator-of-the-therapeutic-effect-of-bexarotene-on-traumatic-brain-injury-in-mice
#7
Jianjun Zhong, Li Jiang, Zhijian Huang, Hongrong Zhang, Chongjie Cheng, Han Liu, Junchi He, Jingchuan Wu, Rami Darwazeh, Yue Wu, Xiaochuan Sun
OBJECTIVE: Bexarotene treatments exert neuroprotective effects on mice following traumatic brain injury (TBI). The present study aims to investigate the potential roles of the long noncoding RNA Neat1 in the neuroprotective effects of bexarotene. MATERIALS AND METHODS: Adult male C57BL/6J mice (n=80) and newborn mice (within 24 h after birth) (n=20) were used to generate a "controlled cortical impact" (CCI) model and harvest primary cortex neurons, respectively...
May 5, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28447190/regulation-of-neat1-mir-214-3p-on-the-growth-migration-and-invasion-of-endometrial-carcinoma-cells
#8
Jian Wang, Xiangzhai Zhao, Zhaojun Guo, Xiaolin Ma, Yueqing Song, Ying Guo
OBJECTIVE: To investigate the function and mechanism of lnc NEAT1 in regulating the growth, migration and invasion of endometrial carcinoma (EC) cells. MATERIALS AND METHODS: NEAT1 and miR-214-3p levels were measured by qRT-PCR. The protein levels of HMGA1, β-catenin, c-myc and MMP9 were evaluated by Western blot. The effects of NEAT1, HMGA1, miR-214-3p on the viability, migration and invasion of HEC-1A cells were accessed by WST-1 assay and transwell migration/invasion assay...
April 26, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28423658/correlation-between-polymorphisms-in-microrna-regulated-genes-and-cervical-cancer-susceptibility-in-a-xinjiang-uygur-population
#9
Jing Fang, Ying Li, Jiayi Zhang, Mengdan Yan, Jingjie Li, Shan Bao, Tianbo Jin
We explored the correlation between single nucleotide polymorphisms (SNPs) and susceptibility to cervical cancer (CC) in a Xinjiang Uygur population. Ten SNPs in eight miRNA-regulated genes were selected for analysis. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated using unconditional logistic regression analysis. Multivariate logistic regression analysis was used to detect correlations between SNPs and CC. We found that minor allele "C" of rs512715 in NEAT1 was associated with an increased risk of CC in the allele, codominant, dominant, overdominant and log-additive models...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418939/exploring-the-molecular-pathogenesis-and-biomarkers-of-high-risk-oral-premalignant-lesions-on-the-basis-of-long-noncoding-rna-expression-profiling-by-serial-analysis-of-gene-expression
#10
Hongcheng Jia, Xuan Wang, Zheng Sun
Oral premalignant lesions (OPLs) have malignant transformation potential, with no reliable markers available. This study aimed to assess molecular events to identify biomarkers that can reflect high-risk lesions as predictive factors to tailor clinical decision for patients on the basis of long noncoding RNAs (lncRNA) expression profiling by serial analysis of gene expression. The GSE31021 and GSE8127 datasets were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) and lncRNAs were identified using the LIMMA package in R language...
April 24, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28404604/unusual-semi-extractability-as-a-hallmark-of-nuclear-body-associated-architectural-noncoding-rnas
#11
Takeshi Chujo, Tomohiro Yamazaki, Tetsuya Kawaguchi, Satoshi Kurosaka, Toru Takumi, Shinichi Nakagawa, Tetsuro Hirose
NEAT1_2 long noncoding RNA (lncRNA) is the molecular scaffold of paraspeckle nuclear bodies. Here, we report an improved RNA extraction method: extensive needle shearing or heating of cell lysate in RNA extraction reagent improved NEAT1_2 extraction by 20-fold (a property we term "semi-extractability"), whereas using a conventional method NEAT1_2 was trapped in the protein phase. The improved extraction method enabled us to estimate that approximately 50 NEAT1_2 molecules are present in a single paraspeckle...
May 15, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28401449/silence-of-long-noncoding-rna-neat1-inhibits-malignant-biological-behaviors-and-chemotherapy-resistance-in-gastric-cancer
#12
Jiale Zhang, Bochao Zhao, Xiuxiu Chen, Zhenning Wang, Huimian Xu, Baojun Huang
Gastric cancer (GC) is the most common solid tumor in digestive system. Nuclear-enriched abundant transcript 1 (NEAT1) gene is a lncRNA, and reveal potential oncogene role in several malignant tumors. The aim of this study is to investigate the expression and clinical significance of Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) gene and its influence to malignant biologic behaviors and chemotherapy resistance to adriamycin in GC. This study found NEAT1 was up-regulated in GC tissues and cells, especially in in GC adriamycin-resistant cells...
April 11, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28379604/neat1-mir-181c-regulates-osteopontin-opn-mediated-synoviocyte-proliferation-in-osteoarthritis
#13
Qiyuan Wang, Wanchun Wang, Fan Zhang, Youwen Deng, Zeling Long
Osteoarthritis (OA) is characterized by progressive destruction of articular cartilage, resulting in significant disability. Inflammatory cytokines commonly initiate the extreme changes in the synovium and cartilage microenvironment of the OA patients, subsequently resulting in cell dysfunctions, especially synoviocyte dysfunction. We revealed that the expression of osteopontin (OPN), which has been reported to regulate expression of various inflammatory factors associating with the pathogenesis of OA including matrix metalloprotease 13 (MMP13), interlukine-6 and 8 (IL-6 and IL-8), is significantly upregulated in OA tissues...
April 5, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28358873/whole-genome-analysis-of-papillary-kidney-cancer-finds-significant-noncoding-alterations
#14
Shantao Li, Brian M Shuch, Mark B Gerstein
To date, studies on papillary renal-cell carcinoma (pRCC) have largely focused on coding alterations in traditional drivers, particularly the tyrosine-kinase, Met. However, for a significant fraction of tumors, researchers have been unable to determine a clear molecular etiology. To address this, we perform the first whole-genome analysis of pRCC. Elaborating on previous results on MET, we find a germline SNP (rs11762213) in this gene predicting prognosis. Surprisingly, we detect no enrichment for small structural variants disrupting MET...
March 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28349920/profiling-the-mapk-erk-dependent-and-independent-activity-regulated-transcriptional-programs-in-the-murine-hippocampus-in-vivo
#15
Nils Blüthgen, Mirjam van Bentum, Barbara Merz, Dietmar Kuhl, Guido Hermey
Activity-dependent alteration of the transcriptional program is central for shaping neuronal connectivity. Constitutively expressed transcription factors orchestrate the initial response to neuronal stimulation and serve as substrates for second messenger-regulated kinase signalling cascades. The mitogen-activated protein kinase ERK conveys signalling from the synapse to the nucleus but its genetic signature following neuronal activity has not been revealed. The goal of the present study was to identify ERK dependent and independent activity regulated transcriptional programs in the murine hippocampus...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28338194/lncrna-neat1-is-closely-related-with-progression-of-breast-cancer-via-promoting-proliferation-and-emt
#16
M Zhang, W-B Wu, Z-W Wang, X-H Wang
OBJECTIVE: Breast cancer (BC) is one of the most common cancers in females. Abnormal proliferation and metastasis are key reasons that cause mortality in BC patients. More and more evidence showed that lncRNA played an important role in the BC development, but the mechanism was not well established. PATIENTS AND METHODS: The expression of lncRNA NEAT1 was detected in 40 BC patients by qRT-PCR technology. MTT and Wound Healing assays were applied to detect the effect of lncRNA NEAT1 in proliferation and metastasis in BC...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28325845/functional-dissection-of-neat1-using-genome-editing-reveals-substantial-localization-of-the-neat1_1-isoform-outside-paraspeckles
#17
Ruohan Li, Alan R Harvey, Stuart I Hodgetts, Archa H Fox
Large numbers of long noncoding RNAs have been discovered in recent years, but only a few have been characterized. NEAT1 (nuclear paraspeckle assembly transcript 1) is a mammalian long noncoding RNA that is important for the reproductive physiology of mice, cancer development, and the formation of subnuclear bodies termed paraspeckles. The two major isoforms of NEAT1 (3.7 kb NEAT1_1 and 23 kb NEAT1_2 in human) are generated from a common promoter and are produced through the use of alternative transcription termination sites...
June 2017: RNA
https://www.readbyqxmd.com/read/28295289/long-non-coding-rna-neat1-is-a-transcriptional-target-of-p53-and-modulates-p53-induced-transactivation-and-tumor-suppressor-function
#18
Masashi Idogawa, Tomoko Ohashi, Yasushi Sasaki, Hiroshi Nakase, Takashi Tokino
p53 is one of the most important tumor suppressor genes, and the direct transcriptional targets of p53 must be explored to elucidate its functional mechanisms. Thus far, the p53 targets that have been primarily studied are protein-coding genes. Our previous study revealed that several long non-coding RNAs (lncRNAs) are direct transcriptional targets of p53, and knockdown of specific lncRNAs modulates p53-induced apoptosis. In this study, analysis of next-generation chromatin immunoprecipitation-sequencing (ChIP-seq) data for p53 revealed that the lncRNA NEAT1 is a direct transcriptional target of p53...
March 14, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28288210/depletion-of-neat1-lncrna-attenuates-nucleolar-stress-by-releasing-sequestered-p54nrb-and-psf-to-facilitate-c-myc-translation
#19
Wen Shen, Xue-Hai Liang, Hong Sun, Cheryl L De Hoyos, Stanley T Crooke
Altered expression of NEAT1, the architectural long non-coding RNA (lncRNA) of nuclear paraspeckles, has been reported during tumorigenesis, as well as under various cellular stress conditions. Here we report that the depletion of NEAT1 lncRNA alleviates nucleolar stress during RNAP I inhibition through releasing sequestered P54nrb and PSF to facilitate the IRES-dependent translation of c-Myc. RNAP I inhibitor CX5461 disrupts the SL1-rDNA interaction and induces nucleolar disruption, demonstrated by the accumulation of fibrillarin-containing nucleoplasmic foci and nucleolar clearance of ribosomal proteins in HeLa cells...
2017: PloS One
https://www.readbyqxmd.com/read/28269753/lncrna-neat1-is-a-prognosis-biomarker-and-regulates-cancer-progression-via-epithelial-mesenchymal-transition-in-clear-cell-renal-cell-carcinoma
#20
Li Ning, Zhiguo Li, Dianjun Wei, Haiyan Chen, Chao Yang
BACKGROUND: The long non-coding RNAs (lncRNAs) are emerging as important regulators in cancer progression. Clear cell renal cell carcinoma (ccRCC) is one of the most common urological cancers with poor prognosis. In this study, we examined the functional role of the lncRNA, nuclear enriched abundant transcript 1 (NEAT1) in ccRCC progression. METHODS: We performed quantitative real time PCR and western blotting assays to measure mRNA and protein expression levels, respectively...
2017: Cancer Biomarkers: Section A of Disease Markers
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