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Lymphoma AND miRNA

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https://www.readbyqxmd.com/read/28430743/microrna-148a-promotes-apoptosis-and-suppresses-growth-of-breast-cancer-cells-by-targeting-b-cell-lymphoma-2
#1
Qunying Li, Pingping Ren, Pengfei Shi, Yihan Chen, Feixiang Xiang, Li Zhang, Jing Wang, Qing Lv, Mingxing Xie
MicroRNAs (miRNAs) contribute toward tumorigenesis through the modulation of tumor-related genes. MiR-148a has been characterized as a tumor-suppressing miRNA and its downregulation has been reported in tumors of a variety of cancers. However, the functional role of miR-148a in breast cancer is not yet fully understood. Using both in-vitro and in-vivo models, we confirmed that miR-148a acts to inhibit the proliferation of breast cancer cells. Through the use of bioinformatic approaches in miRNA target prediction, we determined that B-cell lymphoma 2 (BCL-2) is a likely target of miR-148a...
April 20, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28400759/human-and-epstein-barr-virus-mirna-profiling-as-predictive-biomarkers-for-endemic-burkitt-lymphoma
#2
Cliff I Oduor, Mercedeh Movassagh, Yasin Kaymaz, Kiprotich Chelimo, Juliana Otieno, John M Ong'echa, Ann M Moormann, Jeffrey A Bailey
Endemic Burkitt lymphoma (eBL) is an aggressive B cell lymphoma and is associated with Epstein-Barr virus (EBV) and Plasmodium falciparum malaria co-infections. Central to BL oncogenesis is the over-expression of the MYC proto-oncogene which is caused by a translocation of an Ig enhancer in approximation to the myc gene. While whole genome/transcriptome sequencing methods have been used to define driver mutations and transcriptional dysregulation, microRNA (miRNA) dysregulation and differential expression has yet to be fully characterized...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28377796/redox-regulating-enzymes-and-connected-microrna-regulators-have-prognostic-value-in-classical-hodgkin-lymphomas
#3
Peeter Karihtala, Katja Porvari, Ylermi Soini, Kirsi-Maria Haapasaari
There are no previous studies assessing the microRNAs that regulate antioxidant enzymes in Hodgkin lymphomas (HLs). We determined the mRNA levels of redox regulating enzymes peroxiredoxins (PRDXs) I-III, manganese superoxide dismutase (MnSOD), nuclear factor erythroid-derived 2-like 2 (Nrf2), and Kelch-like ECH-associated protein 1 (Keap1) from a carefully collected set of 41 classical HL patients before receiving any treatments. The levels of redoxmiRs, miRNAs known to regulate the above-mentioned enzymes, were also assessed, along with CD3, CD20, and CD30 protein expression...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28360912/exosomes-isolated-from-ascites-of-t-cell-lymphoma-bearing-mice-expressing-surface-cd24-and-hsp-90-induce-a-tumor-specific-immune-response
#4
Florencia Menay, Leticia Herschlik, Julieta De Toro, Federico Cocozza, Rodrigo Tsacalian, María José Gravisaco, María Paula Di Sciullo, Alejandrina Vendrell, Claudia I Waldner, Claudia Mongini
Extracellular vesicles (EVs), including endosome-derived nanovesicles (exosomes), are involved in cell-cell communication. Through transfer of their molecular contents, extracellular nanovesicles can alter the function of recipient cells. Due to these characteristics, EVs have shown potential as a new alternative for cancer immunotherapy. Tumor exosomes isolated from malignant ascites can activate dendritic cells, thereby priming the immune system to recognize and kill cancer cells. However, a suppressive role on tumor immune response has also been reported, suggesting that the neoplastic stage of carcinogenesis and the microenvironment where tumor cells grow may influence the amount of EVs released by the cell...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28345816/germline-variation-in-the-3-untranslated-region-of-the-pou2af1-gene-is-associated-with-susceptibility-to-lymphoma
#5
Kan Zhai, Jiang Chang, Jinlong Hu, Chen Wu, Dongxin Lin
Genetic variations in certain genes may alter the susceptibility to lymphoma. We searched electronic databases and selected candidate single-nucleotide polymorphisms (SNPs) located within 3'-untranslated regions (3'-UTRs) that might affect miRNA-binding ability in the 50 most dysregulated genes in lymphoma for further study. We found that rs1042752-located in the 3'-UTR of POU2AF1, which plays a vital role in lymphomagenesis-was significantly associated with lymphoma risk in a case-control study with 793 patients and 939 controls...
March 27, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28260044/microrna-125b-reverses-the-multidrug-resistance-of-nasopharyngeal-carcinoma-cells-via-targeting-of-bcl-2
#6
Tai-Ze Yuan, Huan-Huan Zhang, Xiao-Ling Lin, Jin-Xiu Yu, Qiu-Xiang Yang, Yin Liang, Jin Deng, Lai-Ji Huang, Xiu-Ping Zhang
Multidrug resistance (MDR) is a major clinical obstacle in the successful treatment of patients with metastatic nasopharyngeal carcinoma (NPC). Results from previous studies suggest that microRNAs (miRNA) may be involved in promoting MDR in multiple cancer types. However, the role of miR‑125b in modulating the MDR of NPC is elusive. In the present study, miR‑125b expression in cisplatin (DDP) ‑resistant CNE2 cells (CNE2/DDP) was compared with parental counterparts, using reverse transcription‑quantitative polymerase chain reaction...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28259992/ebv%C3%A2-bart%C3%A2-6%C3%A2-3p-and-cellular-microrna%C3%A2-197-compromise-the-immune-defense-of-host-cells-in-ebv%C3%A2-positive-burkitt-lymphoma
#7
Yang-Min Zhang, Yan Yu, He-Ping Zhao
The present study aimed to identify the association between Epstein‑Barr virus (EBV) microRNA (miRNA) and cellular miRNA in compromising the immune system, which contributes to the development of Burkitt lymphoma (BL). The present study selected cellular miR‑197 as the focus of the experiments due to the previous report that it is differentially expressed and the observation that interleukin‑6 receptor (IL‑6R) is a virtual target of miR‑197 and EBV‑BamHI A region rightward transcript (BART)‑6‑3p...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28259954/microrna-34c-is-regulated-by-p53-and-is-involved-in-sevoflurane-induced-apoptosis-in-the-developing-rat-brain-potentially-via-the-mitochondrial-pathway
#8
Xue Zhou, Dongfeng Xian, Jiehua Xia, Ying Tang, Wenda Li, Xiaohui Chen, Zhibin Zhou, Dihan Lu, Xia Feng
The commonly used inhalation anesthetic, sevoflurane, has been previously demonstrated to induce apoptosis in the developing brain; however, the underlying molecular mechanisms remain largely unknown. MicroRNAs (miRNAs) serve important roles in multiple physiological/pathological processes, such as cell death and survival. In the present study, the miRNA sequence that was most closely associated with sevoflurane‑induced apoptosis in the hippocampus of neonatal rat brains was identified. Seven‑day‑old Sprague Dawley rats were first exposed to 2...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28259902/expression-of-mmu-mir-96-in-the-endometrium-during-early-pregnancy-and-its-regulatory-effects-on-stromal-cell-apoptosis-via-bcl2
#9
Yuan Yang, Yi Xie, Mengyun Wu, Yanqing Geng, Rong Li, Lei Xu, Xueqing Liu, Yongquan Pan
Decidualization of endometrial stromal cells is an important feature of implantation and pregnancy. The molecular mechanism underlying decidualization remains unclear, particularly regarding the microRNA (miRNA/miR) regulation of this process. The present study revealed the temporal and spatial distribution of mmu‑miR‑96 in the mouse uterus during early pregnancy by reverse transcription‑quantitative polymerase chain reaction and in situ hybridization. In addition, primary stromal cells were isolated from the mouse uterus and used to explore the role of mmu‑miR‑96 in decidualization...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28253538/the-identification-of-up-regulated-ebv-mir-bhrf1-2-5p-targeting-malt1-and-ebv-mir-bhrf1-3-in-the-circulation-of-patients-with-multiple-sclerosis
#10
Y F Wang, D D He, H W Liang, D Yang, H Yue, X M Zhang, R Wang, B Li, H X Yang, Y Liu, Y Chen, Y X Duan, C Y Zhang, X Chen, J Fu
Epstein-Barr virus (EBV) is a well-documented aetiological factor for multiple sclerosis (MS). EBV encodes at least 44 microRNAs (miRNAs) that are readily detectable in the circulation of human. Previous studies have demonstrated that EBV-encoded miRNAs regulate host immune response and may serve as biomarkers for EBV-associated diseases. However, the roles of EBV miRNAs in MS are still unknown. To fill the gap, we conducted a comprehensive profiling of 44 mature EBV miRNAs in 30 relapsing-remitting MS (RRMS) patients at relapse and 30 matched healthy controls...
March 2, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28251496/brg1-regulation-by-mir-155-in-human-leukemia-and-lymphoma-cell-lines
#11
M Cuadros, V Sánchez-Martín, A Herrera, C Baliñas, J Martín-Padrón, L Boyero, P Peinado, P P Medina
INTRODUCTION/PURPOSE: BRG1 is a key regulator of leukemia stem cells. Indeed, it has been observed that this type of cells is unable to divide, survive and develop new tumors when BRG1 is down-regulated. MATERIALS AND METHODS: We assessed BRG1 and miR-155 expression in 23 leukemia cell lines, and two no pathological lymphocyte samples using qPCR. MiR-155 transfection and western blot were used to analyze the relationship between miR-155 and its validated target, BRG1, by measuring protein expression levels...
March 1, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28228907/primary-osseous-burkitt-lymphoma-with-nodal-and-intracardiac-metastases-in-a-child
#12
Lina Cadavid, Jorge M Sastoque, Carolina Gutiérrez, Mirna Yabur, Gustavo Molina
Burkitt lymphoma (BL) is the most frequent non-Hodgkin lymphoma in pediatric patients, accounting for approximately 34% of the cases of lymphoma in children. This subtype of non-Hodgkin lymphoma was first described in 1958 as a monoclonal proliferation of B cell lymphocytes. Cardiac involvement of BL in association with osseous compromise and lymphadenopathy is rare and poorly documented. We report a case of femur primary BL in an 8-year-old boy with metastatic cardiac involvement, retroperitoneal and iliofemoral lymphadenopathy, and hepatosplenomegaly...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28181423/next-generation-sequencing-of-mirnas-in-clinical-samples-of-epstein-barr-virus-associated-b-cell-lymphomas
#13
Kouta Sakamoto, Tsuyoshi Sekizuka, Taeko Uehara, Tsunekazu Hishima, Sohtaro Mine, Hitomi Fukumoto, Yuko Sato, Hideki Hasegawa, Makoto Kuroda, Harutaka Katano
Epstein-Barr virus (EBV) encodes 49 microRNAs (miRNAs) in the BART and BHRF1 regions of its genome. Although expression profiles of EBV-encoded miRNAs have been reported for EBV-positive cell lines and nasopharyngeal carcinoma, to date there is little information about total miRNA expression, including cellular and viral miRNAs, in the primary tumors of EBV-associated B-lymphoproliferative disorders. In this study, next-generation sequencing and quantitative real-time reverse transcription-PCR were used to determine the expression profiles of miRNAs in EBV-infected cell lines and EBV-associated B-cell lymphomas, including AIDS-related diffuse large B-cell lymphoma (DLBCL), pyothorax-associated lymphoma, methotrexate-associated lymphoproliferative disorder, EBV-positive DLBCL of the elderly, and Hodgkin lymphoma...
March 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28177900/mcmda-matrix-completion-for-mirna-disease-association-prediction
#14
Jian-Qiang Li, Zhi-Hao Rong, Xing Chen, Gui-Ying Yan, Zhu-Hong You
Nowadays, researchers have realized that microRNAs (miRNAs) are playing a significant role in many important biological processes and they are closely connected with various complex human diseases. However, since there are too many possible miRNA-disease associations to analyze, it remains difficult to predict the potential miRNAs related to human diseases without a systematic and effective method. In this study, we developed a Matrix Completion for MiRNA-Disease Association prediction model (MCMDA) based on the known miRNA-disease associations in HMDD database...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28148469/prognostic-value-of-mirna-155-expression-in-b-cell-non-hodgkin-s-lymphoma
#15
Ahmed M L Bedewy, Shereen M Elmaghraby, Ahmed A Shehata, Noha S Kandil
OBJECTIVE: miRNA-155 resides within the B-cell Integration Cluster [BIC] gene on chromosome 21. It can act either as oncogene or as tumor suppressor gene, depending on the cell background in which miRNA-155 is performing its specific target gene controlling function. Therefore, the aim of this study was to investigate miRNA-155 expression in patients with B-cell Non Hodgkin's lymphoma (NHL) and its relation to disease prognosis in diffuse large B cell lymphoma (DLBCL) patients. MATERIALS AND METHODS: RT-PCR assay was performed to evaluate the expression levels of miRNA-155 in 84 patients with newly diagnosed B-NHL and 15 normal controls...
February 1, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28132860/mantle-cell-lymphoma-with-a-novel-t-11-12-q13-p11-2-a-proposed-alternative-mechanism-of-ccnd1-upregulation
#16
Joshua R Menke, George Vasmatzis, Stephen Murphy, Lin Yang, David M Menke, Han W Tun, Rebecca L King, Stephanie A Smoley, Rhett P Ketterling, William R Sukov
Mantle cell lymphoma (MCL) is typically characterized by t(11;14) which places the IGH@ enhancer elements upstream of CCND1. This fusion results in upregulation of CCND1 and consequently its protein product cyclin D1. Recent studies have shown that in MCL, mutations or translocations occurring within the 3' untranslated region (UTR) of the CCND1 gene can result in a truncated mRNA transcript that is more stable and associated with more aggressive disease. We identified a case of MCL showing cyclin D1 overexpression by immunohistochemistry and a t(11;12)(q13;p11...
January 26, 2017: Human Pathology
https://www.readbyqxmd.com/read/28128734/microrna-profiling-in-peripheral-t-cell-lymphoma-not-otherwise-specified
#17
Yun Lin, Wei-Ming Chen, Chen Wang, Xiao-Yan Chen
BACKGROUND: Peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS) is an obviously heterogeneous and highly invasive malignancy without definite phenotype. MicroRNAs (miRNAs) are powerful gene regulators and have been reported as biomarkers in many malignancies. OBJECTIVE: To discover potential signaling miRNAs in PTCL-NOS distinguished from reactive lymphoid hyperplasia (RLH) and to explore the molecular characteristics based on the discovery. METHODS: We measured the expression profile of miRNAs in PTCL-NOS and RLH from our patients using a panel PCR array...
January 20, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28113043/activation-of-gga-mir-155-by-reticuloendotheliosis-virus-t-strain-and-its-contribution-to-transformation
#18
Yongxiu Yao, Deepali Vasoya, Lydia Kgosana, Lorraine Smith, Yulong Gao, Xiaomei Wang, Michael Watson, Venugopal Nair
The v-rel oncoprotein encoded by reticuloendotheliosis virus T strain (Rev-T) is a member of the rel/NF-κB family of transcription factors capable of transformation of primary chicken spleen and bone marrow cells. Rapid transformation of avian haematopoietic cells by v-rel occurs through a process of deregulation of multiple protein-encoding genes through its direct effect on their promoters. More recently, upregulation of oncogenic miR-155 and its precursor pre-miR-155 were demonstrated in Rev-T-infected chicken embryo fibroblast cultures as well as Rev-T-induced B-cell lymphomas...
January 22, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28107482/a-circulating-microrna-signature-predicts-age-based-development-of-lymphoma
#19
Afshin Beheshti, Charles Vanderburg, J Tyson McDonald, Charusheila Ramkumar, Tatenda Kadungure, Hong Zhang, Ronald B Gartenhaus, Andrew M Evens
Extensive epidemiological data have demonstrated an exponential rise in the incidence of non-Hodgkin lymphoma (NHL) that is associated with increasing age. The molecular etiology of this remains largely unknown, which impacts the effectiveness of treatment for patients. We proposed that age-dependent circulating microRNA (miRNA) signatures in the host influence diffuse large B cell lymphoma (DLBCL) development. Our objective was to examine tumor development in an age-based DLBCL system using an inventive systems biology approach...
2017: PloS One
https://www.readbyqxmd.com/read/28101165/functions-of-microrna-143-in-the-apoptosis-invasion-and-migration-of-nasopharyngeal-carcinoma
#20
Jin-Hui Chen, Rui Yang, Wei Zhang, Yong-Ping Wang
Nasopharyngeal carcinoma (NPC) is a common cancer characterized by poor prognosis in areas of Southern China where it is endemic. microRNAs (miRNAs) are a class of naturally occurring small noncoding RNAs, some of which contribute to the initiation and development of cancer. The current study was designed to examine the expression level of miR-143 in NPC tissues. The potential functional targets of miR-143 involved in tumor apoptosis, invasion and migration were also investigated. Reverse transcription-quantitative polymerase chain reaction was used to evaluate the expression levels of miR-143 in clinical NPC specimens...
December 2016: Experimental and Therapeutic Medicine
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