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Malat1

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https://www.readbyqxmd.com/read/29328414/malat1-enhanced-the-proliferation-of-human-osteoblasts-treated-with-ultra%C3%A2-high-molecular-weight-polyethylene-by-targeting-vegf-via-mir%C3%A2-22%C3%A2-5p
#1
Xucheng Yang, Yingying Zhang, Yusheng Li, Ting Wen
Osteolysis associated with an implanted prosthesis is the major cause of failure in prosthesis implantation, and a severe public health issue worldwide. The type of bone metabolism associated with this disorder has been a major focus for improving the outcomes of patients with osteolysis. The role of metastasis‑associated lung adenocarcinoma transcript 1 (MALAT1; a member of the long coding RNA family) during the onset of osteolysis and the related molecular regulatory mechanism in ultra‑high molecular weight polyethylene (UHMWPE)‑treated hFOB 1...
January 4, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29328404/chronic-oxymatrine-treatment-induces-resistance-and-epithelial%C3%A2-mesenchymal-transition-through-targeting-the-long-non-coding-rna-malat1-in-colorectal-cancer-cells
#2
Yibai Xiong, Jun Wang, Huirong Zhu, Lingshuang Liu, Yi Jiang
A major reason for colorectal cancer (CRC) chemoresistance is the enhanced migration and invasion of cancer cells, such as the cell acquisition of epithelial-mesenchymal transition (EMT). Long non-coding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been considered as a pro-oncogene in multiple cancers. However, the precise functional mechanism of lncRNA MALAT1 in chemoresistance and EMT is not well known. In the present study, we focused on the effect of oxymatrine on CRC cells and further investigated the role of MALAT1 in oxymatrine-induced resistance and EMT process...
January 10, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29317209/lncrna-malat1-is-up-regulated-in-diabetic-gastroparesis-and-involved-in-high-glucose-induced-cellular-processes-in-human-gastric-smooth-muscle-cells
#3
Yaoyao Gong, Ying Zhu, Boqian Zhu, Xinmin Si, Ding Heng, Yurong Tang, Xiaomeng Sun, Lin Lin
Recent years, widespread long non-coding RNAs (lncRNAs) were identified and known as regulator of gene expression. Diabetic gastroparesis (DGP) is one of the most common chronic complications of diabetes mellitus. There was no research reported the role of lncRNAs in DGP. In this study, we firstly established a rat model of DGP by STZ injection. Then, we detected the expression of MALAT1 and found that expression of MALAT1 was up-regulated in rat model of DGP, comparing to the control group (P < .01)...
January 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29310950/expression-and-clinical-role-of-long-non-coding-rna-in-high-grade-serous-carcinoma
#4
Natalie Filippov-Levy, Hallel Cohen-Schussheim, Claes G Tropé, Thea E Hetland Falkenthal, Yoav Smith, Ben Davidson, Reuven Reich
OBJECTIVE: To profile long non-coding RNA (lncRNA) expression at the various anatomic sites of high-grades serous carcinoma (HGSC) and in effusion-derived exosomes. METHODS: LncRNA profiling was performed on 60 HGSC specimens, including 10 ovarian tumors, 10 solid metastases and 10 malignant effusions, as well as exosomes from 30 effusion supernatants. Anatomic site-related expression of ESRG, Link-A, GAS5, MEG3, GATS, PVT1 H19, Linc-RoR, HOTAIR and MALAT1 was validated by quantitative PCR and assessed for clinical relevance in a series of 77 HGSC effusions, 40 ovarian carcinomas, 21 solid metastases and 42 supernatant exosomes...
January 5, 2018: Gynecologic Oncology
https://www.readbyqxmd.com/read/29310836/circulating-long-non-coding-rna-malat1-expression-as-molecular-biomarker-in-egyptian-patients-with-breast-cancer
#5
Haidy E Zidan, Rehab A Karam, Omnia S El-Seifi, Tamer M Abd Elrahman
The abnormal contribution of long non-coding RNA (lncRNAs) expression to human tumorigenesis is still a matter of debate. Breast cancer is the most common cancer in females; it represents a terrible problem in our country. The aim of this research was to assess the role of MALAT1, as one of lncRNAs, as a potential biomarker in breast cancer. This study comprised 80 patients with breast cancer and 80 controls. MALAT1 expression was measured by RT-quantitative polymerase chain reaction (qPCR). CA15-3 was estimated using chemiluminescence immunoassay (CLIA)...
January 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29290978/long-noncoding-rna-malat1-promotes-cell-proliferation-through-suppressing-mir-205-and-promoting-smad4-expression-in-osteosarcoma
#6
Qingbo Li, Xiaohan Pan, Xiqian Wang, Xiejia Jiao, Jiachun Zheng, Zhiqiang Li, Yanqing Huo
Increasing evidences have indicated that long non-coding RNAs (lncRNAs) play an important role in multiply biological processes including cell development, differentiation, proliferation and invasion. The metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), is a highly conserved nuclear ncRNA and a key regulator of metastasis development in several cancers. However, its role in osteosarcoma progression is not well known. In this study, we sought to determine the clinical and bilogical role of MALAT1 in osteosarcoma progression...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290968/inhibition-of-ezh2-triggers-the-tumor-suppressive-mir-29b-network-in-multiple-myeloma
#7
Maria Angelica Stamato, Giada Juli, Enrica Romeo, Domenica Ronchetti, Mariamena Arbitrio, Daniele Caracciolo, Antonino Neri, Pierosandro Tagliaferri, Pierfrancesco Tassone, Nicola Amodio
Downregulation of tumor suppressor (TS) microRNAs (miRNAs) commonly occurs in human cancer, including multiple myeloma (MM). We previously demonstrated that miR-29b is a relevant TS miRNA, whose expression in MM cells is inhibited by HDAC4-dependent deacetylation. Here, we provide novel insights into epigenetic mechanisms suppressing miR-29b in MM. In MM patient-derived plasma cells, we found inverse correlation between miR-29b and EZH2 mRNA expression. Both siRNAs and pharmacologic inhibitors of EZH2 led to miR-29b upregulation, and this effect was ascribed to reduced H3K27-trimethylation (H3K27me3) of miR-29a/b-1 promoter regions...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290771/targeting-lncrna-malat1-suppresses-the-progression-of-osteosarcoma-by-altering-the-expression-and-localization-of-%C3%AE-catenin
#8
Zhi-Chang Zhang, Chun Tang, Yang Dong, Jing Zhang, Ting Yuan, Xiao-Lin Li
Osteosarcoma (OS), which affects adolescents especially during a growth spurt, has the highest incidence of any primary malignant bone tumour, and a high rate of early metastasis leading to a very poor prognosis. In recent years, non-coding RNAs, especially long non-coding RNAs (lncRNAs) have attracted more and more attention as novel epigenetic regulators in a variety of tumours, including OS. Most recently, metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) was found to play an important role in OS progression by modulating the enhancers of zeste homolog 2 (EZH2)...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29274336/the-long-non-coding-rna-malat1-activates-nrf2-signaling-to-protect-human-umbilical-vein-endothelial-cells-from-hydrogen-peroxide
#9
Rong Zeng, Rui Zhang, Xitao Song, Leng Ni, Zhichao Lai, Changwei Liu, Wei Ye
The potential effect of the long non-coding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) against hydrogen peroxide (H2O2)-induced oxidative injury in endothelial cells was tested. We show that forced-expression of MALAT1 using a lentiviral vector ("LV-MALAT1") significantly attenuated H2O2-induced death and apoptosis of human umbilical vein endothelial cells (HUVECs). Conversely, knocking down of MALAT1 by targeted siRNA exacerbated H2O2-induced HUVEC injury. For the mechanism study, we show that LV-MALAT1 induced Keap1 downregulation, leading to nuclear-factor-E2-related factor 2 (Nrf2) stabilization and activation...
December 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29258822/lncrna-malat1-regulates-oxldl-induced-cd36-expression-via-activating-%C3%AE-catenin
#10
Ning Huangfu, Zhenyu Xu, Wenyuan Zheng, Yong Wang, Jingsong Cheng, Xiaomin Chen
The expression of scavenger receptors in macrophages regulating lipid uptake plays an important role in foam cell formation and the subsequent atherosclerotic plaque formation. Long non-coding RNA MALAT1 is abundantly expressed in THP-1-derived macrophages, and oxidized low-density lipoprotein promotes its transcription by qRT-PCR and RNA FISH detection. Through chemical inhibitor treatments and by performing a dual luciferase reporter analysis, we found that oxLDL induces MALAT1 transcription through the NF-κB pathway...
December 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29249332/nuclear-long-noncoding-rnas-key-regulators-of-gene-expression
#11
REVIEW
Qinyu Sun, Qinyu Hao, Kannanganattu V Prasanth
A significant portion of the human genome encodes genes that transcribe long nonprotein-coding RNAs (lncRNAs). A large number of lncRNAs localize in the nucleus, either enriched on the chromatin or localized to specific subnuclear compartments. Nuclear lncRNAs participate in several biological processes, including chromatin organization, and transcriptional and post-transcriptional gene expression, and also act as structural scaffolds of nuclear domains. Here, we highlight recent studies demonstrating the role of lncRNAs in regulating gene expression and nuclear organization in mammalian cells...
December 14, 2017: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/29242407/central-role-of-the-p53-pathway-in-the-noncoding-rna-response-to-oxidative-stress
#12
Paola Fuschi, Matteo Carrara, Christine Voellenkle, Jose Manuel Garcia-Manteiga, Paolo Righini, Biagina Maimone, Elena Sangalli, Francesco Villa, Claudia Specchia, Mario Picozza, Giovanni Nano, Carlo Gaetano, Gaia Spinetti, Annibale A Puca, Alessandra Magenta, Fabio Martelli
Oxidative stress plays a fundamental role in many conditions. Specifically, redox imbalance inhibits endothelial cell (EC) growth, inducing cell death and senescence. We used global transcriptome profiling to investigate the involvement of noncoding-RNAs in these phenotypes. By RNA-sequencing, transcriptome changes were analyzed in human ECs exposed to H2O2, highlighting a pivotal role of p53-signaling. Bioinformatic analysis and validation in p53-silenced ECs, identified several p53-targets among both mRNAs and long noncoding-RNAs (lncRNAs), including MALAT1 and NEAT1...
December 12, 2017: Aging
https://www.readbyqxmd.com/read/29237426/long-non-coding-rna-malat1-protects-preterm-infants-with-bronchopulmonary-dysplasia-by-inhibiting-cell-apoptosis
#13
Cheng Cai, Jiajun Qiu, Gang Qiu, Yihuan Chen, Zhijun Song, Juan Li, Xiaohui Gong
BACKGROUND: Bronchopulmonary dysplasia (BPD) is a neonatal chronic lung disease characterized by impaired pulmonary alveolar development in preterm infants. Until now, little is known about the molecular and cellular basis of BPD. There is increasing evidence that lncRNAs regulate cell proliferation and apoptosis during lung organogenesis. The potential role of lncRNAs in the pathogenesis of BPD is unclear. This study aims to clarify the role of MALAT1 during the process of BPD in preterm infants and illustrate the protective effect of MALAT1 involved in preterm infants...
December 13, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29227823/lncrna-malat1-regulates-sepsis-induced-cardiac-inflammation-and-dysfunction-via-interaction-with-mir-125b-and-p38-mapk-nf%C3%AE%C2%BAb
#14
Hu Chen, Xiaoyun Wang, Xuetao Yan, Xiaoli Cheng, Xianghu He, Wenzhong Zheng
This study aimed to explore the role of MALAT1 in sepsis-induced cardiac inflammation and dysfunction. We constructed the rat sepsis models through cecal ligation and puncture (CLP). The cardiac function, including left ventricular peak pressure (LVPP), left ventricular end diastolic pressure (LVEDP) and maximum rate of rise/fall of left ventricle pressure (±dp/dtmax) as well as the contents of serum cardiac troponin I (CTn-I), creatine kinase (CK), and creative kinase isoenzyme MB (CK-MB) were detected after modeling...
December 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29226325/lncrna-malat1-induces-colon-cancer-development-by-regulating-mir-129-5p-hmgb1-axis
#15
Ying Jie, Haijian Zhao
Recent studies have exhibited significant roles of lncRNAs in various tumors' development, including colon cancer. Our study focused on the biological roles of lncRNA MALAT1 in colon cancer. In our study, it was demonstrated that MALAT1 was upregulated in human colon cancer cell lines including Lovo, HCT116, SW480 and HT29 cells compared to the normal human intestinal epithelial HIEC cells. Moreover, we observed that miR-129-5p was downregulated in colon cancer cells with a significant increase of HMGB1 expression...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29222807/long-non-coding-rna-expression-in-bladder-cancer
#16
REVIEW
Mohammad Taheri, Mir Davood Omrani, Soudeh Ghafouri-Fard
The advent of novel high-throughput sequencing methods has facilitated identification of non-coding RNAs with fundamental roles in cellular biological and pathological conditions. A group of these consisting of at least 200 nucleotides are called long non-coding RNAs (lncRNAs). Their participation in the pathogenesis of cancer has been highlighted in recent years. Bladder cancer, one of the most prevalent cancers worldwide, exhibits altered expression levels of several lncRNAs. Several in vitro and in vivo studies have assessed the effects of silencing RNAs on cancer cell phenotypes and in vivo tumor growth...
December 8, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/29221115/lncrna-malat1-hottip-and-pvt1-as-predictors-for-predicting-the-efficacy-of-gem-based-chemotherapy-in-first-line-treatment-of-pancreatic-cancer-patients
#17
Cui-Juan Wang, Sheng-Bin Shi, Jing Tian, Jun Xu, Zuo-Xing Niu
This study evaluated the lnc-RNAs as biomarker to predict efficacy of gemcitabine (GEM) based chemotherapy as the first-line treatment for locally advanced or advanced pancreatic cancer patients. We selected 62 patients with GEM based chemotherapy and divided two groups according to the PFS. We found that the expression of MALAT1, HOTTIP, and PVT1 in serum had a significant difference among the two groups. Furthermore, we estimated the PFS and response rate based on the expression levels of MALAT1, HOTTIP and PVT1...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29216625/missing-links-in-epithelial-mesenchymal-transition-long-non-coding-rnas-enter-the-arena
#18
Lei Wang, Fan Yang, Lin-Tao Jia, An-Gang Yang
Cancer metastasis occurs through a series of sequential steps, which involves dissemination of tumor cells from a primary site and colonization in distant tissues. To promote the invasion-metastasis cascade, carcinoma cells usually initiate a cell-biological program called epithelial-mesenchymal transition (EMT), which is orchestrated by a set of master regulators, including TGF-β, Snail, ZEB and Twist families. The biological activities of these molecules are tightly regulated by a variety of cell-intrinsic pathways as well as extracellular cues...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29215734/study-on-mechanism-about-long-noncoding-rna-malat1-affecting-pancreatic-cancer-by-regulating-hippo-yap-signaling
#19
Yongping Zhou, Ting Shan, Wenzhou Ding, Zhiyuan Hua, Yijun Shen, Zhihua Lu, Bo Chen, Tu Dai
OBJECTIVE: By investigating the migration and invasion ability in pancreatic cancer, this study probed into the lncRNA MALAT1 molecular mechanism on Hippo-YAP signaling. METHODS: The expression of lncRNA MALAT1 in PC tissues and cells was detected by qRT-PCR and western blot. The effect of si-MALAT1 on proliferation was determined by CCK-8 assay. Cell apoptosis, migration and invasion were respectively detected by flow cytometry assay, wound healing assay and transwell assay...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29215698/the-lncrna-malat1-contributes-to-non-small-cell-lung-cancer-development-via-modulating-mir-124-stat3-axis
#20
Sen Li, Zhoufang Mei, Hai-Bo Hu
LncRNAs can exert many biological effects in several cancer types. MALAT1 is a kind of lncRNA which is greatly overexpressed in several tumors including non-small cell lung cancer (NSCLC). However, the mechanism of MALAT1 in NSCLC still remains unclear. In our current study, we concentrated on the biological mechanism of MALAT1 in NSCLC. It was observed that MALAT1 was significantly upregulated in five human NSCLC cells including A549, H23, H522, H1299 and H460 cells compared to normal bronchial epithelial cell line 16HBE cells...
December 7, 2017: Journal of Cellular Physiology
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