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https://www.readbyqxmd.com/read/29156758/development-of-novel-long-noncoding-rna-malat1-near-infrared-optical-probes-for-in-vivo-tumour-imaging
#1
Meng-Jie Dong, Cai-Qin Wang, Guo-Lin Wang, Yue-Hong Wang, Zhen-Feng Liu
With the advent of next-generation sequencing technology, there is rapidly increasing interest in long noncoding RNAs (lncRNAs). The objectives of this study were to develop a novel lncRNA MALAT1 near-infrared optical probe, to evaluate the characteristics of this optical imaging probe in vitro and to determine whether it can be used for imaging MALAT1 expression in malignant tumours in vivo. Conjugation of Cy5.5 to MALAT1 ASO was accomplished using standard NHS (N-hydroxysuccinimide) ester procedures, and the labelled MALAT1 ASO was purified with a Glen-Pak DNA Purification Cartridge and reversed-phase high performance liquid chromatography (HPLC)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151968/lncrna-malat1-inhibits-apoptosis-and-promotes-invasion-by-antagonizing-mir-125b-in-bladder-cancer-cells
#2
Haibiao Xie, Xinhui Liao, Zhicong Chen, Yuan Fang, Anbang He, Yucheng Zhong, Qunjun Gao, Huizhong Xiao, Jianfa Li, Weiren Huang, Yuchen Liu
Accumulating evidences suggest that longnon-coding RNAs (lncRNAs) play functional roles in development of different cancers, including cancer initiation and progression. Metastasis associated lung adenocarcinoma transcript 1(MALAT1) is a well-known lncRNA which was previously shown to be a direct target of miR-125b in bladder cancer (BCa) and to promote cancer progression and invasion. However, little is known whether MALAT1 can also target miR-125b. In the present study, using CRISPR-based technologies and qRT-PCR, we show that MALAT1 is capable of suppressing mature miR-125b and increasing the expression of its target genes (Bcl-2 and MMP-13), but has no effect on pri-miR-125b and pre-miR-125b...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29148086/novel-gene-fusion-of-prcc-mitf-defines-a-new-member-of-mit-family-translocation-renal-cell-carcinoma-clinicopathologic-analysis-and-detection-of-the-gene-fusion-by-rna-sequencing-and-fish
#3
Qiu-Yuan Xia, Xiao-Tong Wang, Sheng-Bing Ye, Xuan Wang, Rui Li, Shan-Shan Shi, Ru Fang, Ru-Song Zhang, Heng-Hui Ma, Zhen-Feng Lu, Qin Shen, Wei Bao, Xiao-Jun Zhou, Qiu Rao
AIMS: MITF, TFE3, TFEB and TFEC belong to the same microphthalmia-associated transcription factor family (MiT). Two transcription factors in this family have been identified in two unusual types of renal cell carcinoma (RCC): Xp11 translocation RCC harboring TFE3 gene fusions and t(6;11) RCC harboring a MALAT1-TFEB gene fusion. The 2016 World Health Organization classification of renal neoplasia grouped these two neoplasms together under the category of MiT family translocation RCC. RCCs associated with the other two MiT family members, MITF and TFEC, have rarely been reported...
November 17, 2017: Histopathology
https://www.readbyqxmd.com/read/29146194/association-analyses-of-genetic-variants-in-long-non-coding-rna-malat1-with-breast-cancer-susceptibility-and-mrna-expression-of-malat1-in-chinese-han-population
#4
Rui Peng, Chenglin Luo, Qiaoyun Guo, Jingjing Cao, Qian Yang, Kaiyan Dong, Shuaibing Wang, Kaijuan Wang, Chunhua Song
The long non-coding RNA (lncRNA) Metastasis-associated lung adenocarcinoma transcript 1(MALAT1) has been implicated in breast cancer (BC). Polymorphisms in MALAT1 may play a vital role in the progress of breast cancer by its regulation function. However, potential genetic variants in MALAT1 affecting the development of BC is rarely explored. In our current molecular epidemiology study, all three tagging SNPs (rs3200401, rs619586 and rs7927113) in lncRNA MALAT1 were selected for genotyping in 487BCE patients and 489 cancer-free controls in Chinese Han population, and futher experiment of quantitative real-time (qRT) PCR was conducted to examine the relative expression of MALAT1...
November 13, 2017: Gene
https://www.readbyqxmd.com/read/29137430/genome-wide-analysis-and-functional-prediction-of-long-non-coding-rnas-in-mouse-uterus-during-the-implantation-window
#5
Qi Wang, Nan Wang, Rui Cai, Fan Zhao, Yongjie Xiong, Xiao Li, Aihua Wang, Pengfei Lin, Yaping Jin
Establishment of the receptive uterus is a crucial step for embryo implantation. In this study, the expression profiles and characterization of long non-coding RNAs (lncRNAs) in pregnant mouse uteri on day 4, day 5 at implantation sites and inter-implantation sites were conducted using RNA-seq. A total of 7,764 putative lncRNA transcripts were identified, including 6,179 known lncRNA transcripts and 1,585 novel lncRNA transcripts. Bioinformatics analysis of the cis and trans lncRNA targets showed that the differentially expressed lncRNAs were mainly involved in tissue remodelling, immune response and metabolism-related processes, indicating that lncRNAs could be involved in the regulation of embryo implantation...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29133588/quantitative-analysis-of-multilayer-organization-of-proteins-and-rna-in-nuclear-speckles-at-super-resolution
#6
Jingyi Fei, Mahdieh Jadaliha, Tyler S Harmon, Isaac T S Li, Boyang Hua, Qinyu Hao, Alex S Holehouse, Matthew Reyer, Qinyu Sun, Susan M Freier, Rohit V Pappu, Kannanganattu V Prasanth, Taekjip Ha
Nuclear speckles are self-assembled organelles composed of RNAs and proteins. They are proposed to act as structural domains that control distinct steps in gene expression, including transcription, splicing, and mRNA export. Earlier studies identified differential localization of a few components within the speckles. It was speculated that the spatial organization of speckle components might contribute directly to the order of operations that coordinate distinct processes. By performing multi-color structured illumination microscopy, we characterized the multilayer organization of speckles at a higher resolution...
November 13, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/29119387/a-new-etv6-ntrk3-cell-line-model-reveals-malat1-as-a-novel-therapeutic-target-a-short-report
#7
Suning Chen, Stefan Nagel, Bjoern Schneider, Haiping Dai, Robert Geffers, Maren Kaufmann, Corinna Meyer, Claudia Pommerenke, Kenneth S Thress, Jiao Li, Hilmar Quentmeier, Hans G Drexler, Roderick A F MacLeod
BACKGROUND: Previously, the chromosomal translocation t(12;15)(p13;q25) has been found to recurrently occur in both solid tumors and leukemias. This translocation leads to ETV6-NTRK3 (EN) gene fusions resulting in ectopic expression of the NTRK3 neurotropic tyrosine receptor kinase moiety as well as oligomerization through the donated ETV6-sterile alpha motif domain. As yet, no in vitro cell line model carrying this anomaly is available. Here we genetically characterized the acute promyelocytic leukemia (APL) cell line AP-1060 and, by doing so, revealed the presence of a t(12;15)(p13;q25)...
November 8, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29116025/mir-200c-suppresses-endometriosis-by-targeting-malat1-in-vitro-and-in-vivo
#8
Zongwen Liang, Yijie Chen, Yuan Zhao, Chaoyi Xu, Anqi Zhang, Qiong Zhang, Danhan Wang, Jing He, Wenfeng Hua, Ping Duan
BACKGROUND: Endometriosis is a common, benign, and estrogen-dependent disease characterized by pelvic pain and infertility. To date, the pathogenesis of endometriosis remains unclear. Recent studies have demonstrated that noncoding RNAs, including microRNAs and long noncoding RNAs, play important roles in the development of endometriosis. METHODS: Expression profiling of miRNAs in endometrial tissue was characterized using microarrays. The most differentially expressed miRNAs were confirmed using quantitative reverse transcriptase-polymerase chain reaction analysis in additional ectopic endometrial (n = 27) and normal endometrial (n = 12) tissues...
November 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29115409/mechanism-of-long-non-coding-rna-malat1-in-lipopolysaccharide-induced-acute-kidney-injury-is-mediated-by-the-mir-146a-nf-%C3%AE%C2%BAb-signaling-pathway
#9
Ying Ding, Feng Guo, Tao Zhu, Jun Li, Danyan Gu, Weiliang Jiang, Yuying Lu, Daoyang Zhou
The present study aimed to examine the expression and function of the metastasis-associated lung adenocarcinoma transcript 1 (MALAT1)/microRNA (miR)-146a/nuclear factor (NF)-κB axis in lipopolysaccharide (LPS)-induced acute kidney injury (AKI). The mRNA levels of MALAT1 and miR-146a in AKI tissues and cells were detected using reverse transcription-quantitative polymerase chain reaction analysis. The NF-κB pathway proteins and cell viability were assessed using western blot analysis and the MTT method, respectively...
November 2, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29110299/long-non-coding-rna-malat1-expression-in-patients-with-gestational-diabetes-mellitus
#10
Yisheng Zhang, Hangyu Wu, Fuyan Wang, Mei Ye, Hong Zhu, Shizhong Bu
OBJECTIVE: To monitor expression of long non-coding RNAs (lncRNAs) and changes in metabolic profiles among patients with gestational diabetes mellitus (GDM). METHODS: A retrospective case-control study was conducted using data for women treated at a hospital in China between October 8, 2014, and April 15, 2015. The cases were women diagnosed with GDM using an oral glucose tolerance test at 24-28 weeks of pregnancy (n=50). The controls comprised pregnant women without GDM (n=47)...
November 6, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29107050/microrna-21-and-long-non-coding-rna-malat1-are-overexpressed-markers-in-medullary-thyroid-carcinoma
#11
Ying-Hsia Chu, Heather Hardin, David F Schneider, Herbert Chen, Ricardo V Lloyd
BACKGROUND: Non-coding RNAs, including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), are well-recognized post-transcriptional regulators of gene expression. This study examines the expression of microRNA-21 (miR-21) and lncRNA MALAT1 in medullary thyroid carcinomas (MTCs) and their effects on tumor behavior. METHODS: Tissue microarrays (TMAs) were constructed using normal thyroid (n=39), primary tumors (N=39) and metastatic MTCs (N=18) from a total of 42 MTC cases diagnosed between 1987 and 2016...
October 26, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29100395/long-noncoding-rna-malat-1-is-a-novel-inflammatory-regulator-in-human-systemic-lupus-erythematosus
#12
Huaxia Yang, Naixin Liang, Min Wang, Yunyun Fei, Jian Sun, Zhiyuan Li, Yuan Xu, Chao Guo, Zhili Cao, Shanqing Li, Yuchen Jiao
Despite growing evidence that Long noncoding RNAs (lncRNAs) can regulate gene expression and widely take part in autoimmune and inflammatory diseases, our knowledge of systemic lupus erythematosus (SLE)-related lincRNAs remains limited. In this study, we aimed to explore the contribution of the lncRNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) to the pathogenesis of SLE. PBMCs were obtained from SLE patients and healthy donors. The expression levels of MALAT-1 were measured by quantitative PCR...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29096355/the-long-non-coding-rna-malat1-interacted-with-mir-218-modulates-choriocarcinoma-growth-by-targeting-fbxw8
#13
Dazun Shi, Yu Zhang, Rong Lu, Yi Zhang
Among the first found cancer-related long non-coding RNAs (lncRNAs), MALAT1 is one that involves in the development and progression of some tumors. MALAT1 can be aberrantly expressed in hepatocellular carcinoma, cervical, breast, ovarian cancers, as well as colorectal cancer. The paper aims to make certain the function of MALAT1 in human choriocarcinoma cell lines by investigating the detailed effects and molecular mechanisms. Being specifically upregulated in choriocarcinoma cell lines, the under-researched lncRNA-MALAT1 promoted choriocarcinoma cell growth by targeting miR-218...
October 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29095793/low-dose-sinapic-acid-abates-the-pyroptosis-of-macrophages-via-downregulation-of-lncrna-malat1-in-rats-with-diabetic-atherosclerosis
#14
Yong Han, Hong Qiu, Xing Pei, Yigang Fan, Hongyan Tian, Jie Geng
Pyroptosis is a type of programmed cell death, which has been associated with multiple inflammatory diseases including diabetic atherosclerosis (DA). The study aims to explore the role of sinapic acid (SA) in the pyroptosis of macrophages in diabetic atherosclerosis. Our results from the in vivo experiments showed that low-dose (≤ 50 mg/Kg) chronic SA adiministration suppressed serum endothelin 1 (ET-1) and interleukine-1β (IL-1β) contents, pyroptotic death of bone marrow derived macrophages (BMDMs), and the expression of pyroptotic proteins ASC, NRLP3 and Caspase-1...
October 27, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29073720/malat1-modulates-the-autophagy-of-retinoblastoma-cell-through-mir-124-mediated-stx17-regulation
#15
Jun Huang, Yuting Yang, Fang Fang, Ke Liu
The retinoblastoma is the most common intraocular malignant tumor in infants and children; it is one of the deadliest forms of cancer due to its limited sensitivity to chemotherapy and radiotherapy. In several cancers, chemoresistance is associated with autophagy induction. Non-coding RNAs, including long non-coding RNAs (lncRNA) and microRNAs (miRNAs) have been reported to regulate physiological activities of the cells, including proliferation, apoptosis, migration, as well as autophagy. MALAT1, a well-established lncRNA acts as an oncogene, promotes cancer proliferation and metastasis via the stimulation of autophagy...
October 26, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29065394/long-non-coding-rna-malat1-mediates-retinal-ganglion-cell-apoptosis-through-the-pi3k-akt-signaling-pathway-in-rats-with-glaucoma
#16
Hai-Bo Li, Qi-Sheng You, Li-Xin Xu, Li-Xin Sun, Aman Shah Abdul Majid, Xiao-Bo Xia, Dan Ji
BACKGROUND/AIMS: The aim of the present study is to investigate the effect of long non-coding RNA-MALAT1 (LncRNA-MALAT1) on retinal ganglion cell (RGC) apoptosis mediated by the PI3K/Akt signaling pathway in rats with glaucoma. METHODS: RGCs were isolated and cultured, and monoclonal antibodies (anti-rat Thy-1, Brn3a and RBPMS) were examined by immunocytochemistry. An overexpression vector MALAT1-RNA activation (RNAa), gene knockout vector MALAT1-RNA interference (RNAi), and control vector MALAT1-negative control (NC) were constructed...
October 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29062838/systematic-identification-and-molecular-characteristics-of-long-noncoding-rnas-in-pig-tissues
#17
Yalan Yang, Rong Zhou, Shiyun Zhu, Xunbi Li, Hua Li, Hui Yu, Kui Li
Long noncoding RNAs (lncRNAs) are non-protein-coding RNAs that are involved in a variety of biological processes. The pig is an important farm animal and an ideal biomedical model. In this study, we performed a genome-wide scan for lncRNAs in multiple tissue types from pigs. A total of 118 million paired-end 90 nt clean reads were obtained via strand-specific RNA sequencing, 80.4% of which were aligned to the pig reference genome. We developed a stringent bioinformatics pipeline to identify 2,139 high-quality multiexonic lncRNAs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29062004/ethanol-induces-enhanced-vascularization-bioactivity-of-endothelial-cell-derived-extracellular-vesicles-via-regulation-of-micrornas-and-long-non-coding-rnas
#18
Tek N Lamichhane, Christopher A Leung, Lampouguin Yenkoidiok Douti, Steven M Jay
Extracellular vesicles (EVs), such as exosomes, have been identified as regulators of vascular remodeling and have promise as therapeutics for vascularization applications. Towards development of EVs as therapeutics, it has been demonstrated that physiological stimuli of angiogenic phenotypes in EV-producing cells can enhance the potency of EVs for vascularization. The goal of this study was to assess whether ethanol, which induces angiogenic phenotypes in endothelial cells, could be employed to enhance endothelial-derived EV vascularization bioactivity...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29059327/evaluation-of-fluorescence-in-situ-hybridization-techniques-to-study-long-non-coding-rna-expression-in-cultured-cells
#19
Ricardo J Soares, Giulia Maglieri, Tony Gutschner, Sven Diederichs, Anders H Lund, Boye S Nielsen, Kim Holmstrøm
Deciphering the functions of long non-coding RNAs (lncRNAs) is facilitated by visualization of their subcellular localization using in situ hybridization (ISH) techniques. We evaluated four different ISH methods for detection of MALAT1 and CYTOR in cultured cells: a multiple probe detection approach with or without enzymatic signal amplification, a branched-DNA (bDNA) probe and an LNA-modified probe with enzymatic signal amplification. All four methods adequately stained MALAT1 in the nucleus in all of three cell lines investigated, HeLa, NHDF and T47D, and three of the methods detected the less expressed CYTOR...
October 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29058818/prognostic-significance-of-long-non-coding-rna-malat1-for-predicting-the-recurrence-and-metastasis-of-gallbladder-cancer-and-its-effect-on-cell-proliferation-migration-invasion-and-apoptosis
#20
Ke-Ke Sun, Ping-Ping Hu, Feng Xu
The objective of this study is to explore the role of MALAT1 as a molecular indicator in predicting the recurrence, metastasis and prognosis of gallbladder cancer (GBC) and its effect on the proliferation, invasion, migration, and apoptosis of GBC cells in vitro. GBC tissues and adjacent normal tissues were collected from 102 patients. MALAT1 short hairpin RNA (shRNA) plasmids were first constructed to transfect the GBC-SD cells. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) was applied to detect MALAT1 expression...
October 23, 2017: Journal of Cellular Biochemistry
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