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Lymphoma AND miRNA

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https://www.readbyqxmd.com/read/28781815/preliminary-data-on-microrna-expression-profiles-in-a-group-of-south-african-patients-diagnosed-with-chronic-myeloid-leukaemia
#1
Andrea Prinsloo, Roger Pool, Chantal Van Niekerk
Micro-ribonucleic acids (miRNAs) are small functional non-coding RNAs that downregulate gene expression at the post-transcriptional level. Abnormal expression of specific miRNAs has been recorded in chronic lymphocytic leukaemia, other non-Hodgkin B-cell lymphomas, lung cancer and chronic myeloid leukaemia (CML). The aim of this study was to compare miRNA expression profiles among patients with newly diagnosed CML, those on established therapy with imatinib mesylate, and healthy individuals. The expression of 88 miRNAs was evaluated in a total of nine samples divided into three groups: Group 1 comprised three samples collected from newly diagnosed CML patients; group 2 consisted of three samples collected from patients on therapy; the remaining three samples were collected from healthy volunteers (control group)...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28771164/crosstalk-between-microrna-and-dna-methylation-offers-potential-biomarkers-and-targeted-therapies-in-alk-positive-lymphomas
#2
REVIEW
Coralie Hoareau-Aveilla, Fabienne Meggetto
The discovery of microRNA (miRNA) has provided new and powerful tools for studying the mechanism, diagnosis and treatment of human cancers. The down-regulation of tumor suppressive miRNA by hypermethylation of CpG island (CpG is shorthand for 5'-C-phosphate-G-3', that is, cytosine and guanine separated by only one phosphate) is emerging as a common hallmark of cancer and appears to be involved in drug resistance. This review discusses the role of miRNA and DNA methylation in drug resistance mechanisms and highlights their potential as anti-cancer therapies in Anaplastic Lymphoma Kinase (ALK)-positive lymphomas...
August 3, 2017: Cancers
https://www.readbyqxmd.com/read/28765925/altered-expression-of-microrna-98-in-il-1%C3%AE-induced-cartilage-degradation-and-its-role-in-chondrocyte-apoptosis
#3
Jing Wang, Lingqing Chen, Song Jin, Jun Lin, Hongmei Zheng, Hong Zhang, Hongtao Fan, Fang He, Sha Ma, Qin Li
Osteoarthritis (OA) is a multifactorial disease characterized by degeneration of the articular cartilage due to genetic and epigenetic components. The pathogenesis of OA is complex and the mechanism of chondrocyte homeostatic regulation remains to be fully elucidated. Previous studies have demonstrated that microRNAs (miRNAs/miR) contribute to cartilage dysfunction. However, the functional role of miR‑98 in interleukin‑1β (IL‑1β)‑induced chondrocyte apoptosis in OA cartilage remains to be investigated...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28757417/mirnas-in-b-cell-lymphoma-molecular-mechanisms-and-biomarker-potential
#4
Carla Solé, Erika Larrea, Giovanni Di Pinto, Maitena Tellaetxe, Charles Henderson Lawrie
MicroRNAs (miRNAs) are small non-coding RNAs that regulate many human genes including those involved in normal B-cell development. When these miRNAs are aberrantly expressed in B-cells they play key pathogenetic roles in the development and maintenance of B-cell lymphomas and by association may serve as useful biomarkers. In this review, we provide an overview of the importance of miRNAs to B-cell lymphomagenesis, as well as considering their use as biomarkers, and their potential usefulness for the clinic.
July 27, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28739740/global-analysis-of-mirna-mrna-interaction-network-in-breast-cancer-with-brain-metastasis
#5
Zhixin Li, Zhiqiang Peng, Siyu Gu, Junfang Zheng, Duiping Feng, Qiong Qin, Junqi He
BACKGROUND: MicroRNAs (miRNAs) have been linked to a number of cancer types including breast cancer. The rate of brain metastases is 10-30% in patients with advanced breast cancer which is associated with poor prognosis. The potential application of miRNAs in the diagnostics and therapeutics of breast cancer with brain metastasis is an area of intense interest. In an initial effort to systematically address the differential expression of miRNAs and mRNAs in primary breast cancer which may provide clues for early detection of brain metastasis, we analyzed the consequent changes in global patterns of gene expression in Gene Expression Omnibus (GEO) data set obtained by microarray from patients with in situ carcinoma and patients with brain metastasis...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28724379/regulation-of-glucose-uptake-in-lymphoma-cell-lines-by-c-myc-and-pi3k-dependent-signaling-pathways-and-impact-of-glycolytic-pathways-on-cell-viability
#6
Martina Broecker-Preuss, Nina Becher-Boveleth, Andreas Bockisch, Ulrich Dührsen, Stefan Müller
BACKGROUND: Changes in glucose and energy metabolism contribute to the altered phenotype of cancer cells and are the basis for positron emission tomography with (18)F-fluoro-2-deoxy-D-glucose (FDG) to visualize tumors in vivo. The molecular background of the enhanced glucose uptake and its regulation in lymphoma cells is not fully clarified and may provide new possibilities to reverse the altered metabolism. Thus in this study we investigated regulation of glucose uptake by different signaling pathways...
July 19, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28716711/epigenetic-silencing-of-mirna-143-regulates-apoptosis-by-targeting-bcl2-in-human-intervertebral-disc-degeneration
#7
Kangcheng Zhao, Yukun Zhang, Kang Liang, Yu Song, Kun Wang, Shuai Li, Xinghuo Wu, Wenbin Hua, Zengwu Shao, Shuhua Yang, Cao Yang
Accumulating evidence indicates that microRNAs can regulate the apoptosis of various cells. Apoptosis of nucleus pulposus cells plays an important role in the progression of intervertebral disc degeneration. The aim of this study is to investigate whether microRNA-143 (miRNA-143) is involved in the progression of intervertebral disc degeneration. In this study, the expression of miRNA-143 and its biological modulatory effects were examined. Messenger RNA and protein expression of miRNA-143 and B-cell lymphoma-2 (BCL2) in both normal and degenerative disc tissues was determined by using RT-PCR and western-blot assays...
July 14, 2017: Gene
https://www.readbyqxmd.com/read/28715488/microrna-dependent-and-independent-deregulation-of-long-non-coding-rnas-by-an-oncogenic-herpesvirus
#8
Sunantha Sethuraman, Lauren Appleby Gay, Vaibhav Jain, Irina Haecker, Rolf Renne
Kaposi's sarcoma (KS) is a highly prevalent cancer in AIDS patients, especially in sub-Saharan Africa. Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiological agent of KS and other cancers like Primary Effusion Lymphoma (PEL). In KS and PEL, all tumors harbor latent KSHV episomes and express latency-associated viral proteins and microRNAs (miRNAs). The exact molecular mechanisms by which latent KSHV drives tumorigenesis are not completely understood. Recent developments have highlighted the importance of aberrant long non-coding RNA (lncRNA) expression in cancer...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28713948/microrna%C3%A2-126-inhibits-endothelial-permeability-and-apoptosis-in-apolipoprotein-e%C3%A2-knockout-mice-fed-a-high%C3%A2-fat-diet
#9
Xiao-Wen Cheng, Yu-Feng Wan, Qing Zhou, Yuan Wang, Hua-Qing Zhu
Endothelial dysfunction and apoptosis have key roles in the initiation and progression of atherosclerosis (AS). AS has been demonstrated to be associated with a high‑fat diet, which may increase endothelial permeability and apoptosis; however, the exact mechanisms underlying the development of AS remain poorly understood. MicroRNAs (miRNAs) are vital for the regulation of cardiovascular disease, and dysregulated miRNAs have been implicated in AS. The present study investigated whether miRNA (miR)‑126 regulates high‑fat diet‑induced endothelial permeability and apoptosis by targeting transforming growth factor β (TGFβ), a secreted protein that controls cellular proliferation and apoptosis...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28707270/profiling-of-cellular-microrna-responses-during-the-early-stages-of-kshv-infection
#10
Hosni A M Hussein, Shaw M Akula
Kaposi's sarcoma-associated herpesvirus (KSHV) causes a variety of cancers, including Kaposi's sarcoma (KS), primary effusion lymphoma (PEL), and multicentric Castleman disease (MCD). Host cellular microRNAs (miRNAs) play important post-transcriptional regulatory roles in gene expression and can greatly influence virus-host cell interactions. This study investigated cellular miRNA expression profiles operating in response to early stages of KSHV infection of human Burkitt lymphoma B cells (BJAB). We employed deep sequencing to analyze miRNA expression in KSHV-infected BJAB cells 15 min post infection (PI) and compared this to uninfected BJAB cells...
July 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28705173/conserved-sequences-of-bart-and-bhrf-regions-encoding-viral-micrornas-in-epstein-barr-virus-associated-lymphoma
#11
Keishin Sunagawa, Tsunekazu Hishima, Hitomi Fukumoto, Hideki Hasegawa, Harutaka Katano
OBJECTIVE: Epstein-Barr virus (EBV) encodes at least 25 pri-microRNAs (miRNAs) in two regions of its DNA genome, BART and BHRF. B95-8, an EBV reference strain, has a deletion in the BART region. However, no information is available on the deletions or mutations in the BART and BHRF regions in clinical samples of EBV-associated lymphoma. RESULTS: Nine DNA fragments encoding miR-BARTs and two coding miR-BHRF1s were amplified by PCR from DNA samples extracted from 16 cases of EBV-associated lymphoma...
July 14, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28694799/a-tiny-rna-that-packs-a-big-punch-the-critical-role-of-a-viral-mir-155-ortholog-in-lymphomagenesis-in-marek-s-disease
#12
REVIEW
Guoqing Zhuang, Aijun Sun, Man Teng, Jun Luo
MicroRNAs (miRNAs) are small non-coding RNAs that have been identified in animals, plants, and viruses. These small RNAs play important roles in post-transcriptional regulation of various cellular processes, including development, differentiation, and all aspects of cancer biology. Rapid-onset T-cell lymphoma of chickens, namely Marek's disease (MD), induced by Gallid alphaherpesvirus 2 (GaHV2), could provide an ideal natural animal model for herpesvirus-related cancer research. GaHV2 encodes 26 mature miRNAs derived from 14 precursors assembled in three distinct gene clusters in the viral genome...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28687876/chromosome-21-encoded-micrornas-mrnas-impact-on-down-s-syndrome-and-trisomy-21-linked-disease
#13
P N Alexandrov, M E Percy, Walter J Lukiw
Down's syndrome (DS; also known as trisomy 21; T21) is caused by a triplication of all or part of human chromosome 21 (chr21). DS is the most common genetic cause of intellectual disability attributable to a naturally-occurring imbalance in gene dosage. DS incurs huge medical, healthcare, and socioeconomic costs, and there are as yet no effective treatments for this incapacitating human neurogenetic disorder. There is a remarkably wide variability in the 'phenotypic spectrum' associated with DS; the progression of symptoms and the age of DS onset fluctuate, and there is further variability in the biophysical nature of the chr21 duplication...
July 7, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28677789/mirna%C3%A2-504-inhibits-p53%C3%A2-dependent-vascular-smooth-muscle-cell-apoptosis-and-may-prevent-aneurysm-formation
#14
Xue Cao, Zhenguo Cai, Junyan Liu, Yanru Zhao, Xin Wang, Xueqi Li, Hongyuan Xia
Abdominal aortic aneurysm (AAA) is a common disease that is associated with the proliferation and apoptosis of vascular smooth muscle cells (VSMCs). VSMCs are regulated by microRNAs (miRNA). The aim of the present study was to identify miRNA sequences that regulate aortic SMCs during AAA. miRNA‑504 was identified using a miRNA PCR array and by reverse transcription‑quantitative polymerase chain reaction analysis, and its expression levels were observed to be downregulated in the aortic cells derived from patients with AAA when compared with controls...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28640256/microrna-26a-cyclin-dependent-kinase-5-axis-controls-proliferation-apoptosis-and-in-vivo-tumor-growth-of-diffuse-large-b-cell-lymphoma-cell-lines
#15
Floriana Maria Farina, Alessandra Inguscio, Paolo Kunderfranco, Alice Cortesi, Leonardo Elia, Manuela Quintavalle
Diffuse large B-cell lymphoma (DLBCL) is the most frequent type of non-Hodgkin lymphoma. Despite a favorable therapeutic response to first-line chemo-immunotherapy, still 30-40% of patients is refractory, or relapse after this treatment. Thus, alternative strategies must be sought. Previous studies have indicated that cyclin-dependent kinase 5 (CDK5), a serine/threonine protein kinase, is involved in tumor development and progression, and it may represent a potential therapeutic target. However, its role in modulating DLBCL growth and progression remains largely unexplored...
June 22, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28627414/akt-hyperactivation-and-the-potential-of-akt-targeted-therapy-in-diffuse-large-b-cell-lymphoma
#16
Jinfen Wang, Zijun Y Xu-Monette, Kausar J Jabbar, Qi Shen, Ganiraju C Manyam, Alexandar Tzankov, Carlo Visco, Jing Wang, Santiago Montes-Moreno, Karen Dybkær, Wayne Tam, Govind Bhagat, Eric D Hsi, J Han van Krieken, Maurilio Ponzoni, Andrés J M Ferreri, Shi Wang, Michael B Møller, Miguel A Piris, L Jeffrey Medeiros, Yong Li, Lan V Pham, Ken H Young
AKT signaling is important for proliferation and survival of tumor cells. The clinical significance of AKT activation in diffuse large B-cell lymphoma (DLBCL) is not well analyzed. Here, we assessed expression of phosphorylated AKT (p-AKT) in 522 DLBCL patients. We found that high levels of p-AKT nuclear expression, observed in 24.3% of the study cohort, were associated with significantly worse progression-free survival and Myc and Bcl-2 overexpression. However, multivariate analysis indicated that AKT hyperactivation was not an independent factor...
August 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28600495/functional-dissection-of-human-targets-for-kshv-encoded-mirnas-using-network-analysis
#17
Yu Wang, Yun Lin, Yanzhi Guo, Xuemei Pu, Menglong Li
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiological agent of Kaposi's sarcoma, primary effusion lymphoma and multicentric Castleman's disease, etc. In this study, we firstly systematically constructed the KSHV-encoded miRNA-regulated co-expressed protein-protein interaction network (CePPIN), which display the biological knowledge regarding the mechanism of miRNA-regulated KSHV pathogenesis. Then, we investigated the topological parameters for the proteins in CePPIN, especially for those miRNA targets and we found that cellular target genes of KSHV-encoded miRNAs tend to be hubs and bottlenecks in the network...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28596939/undifferentiated-pleomorphic-sarcoma-and-the-importance-of-considering-the-oncogenic-and-immune-suppressant-role-of-the-human-t-cell-lymphotropic-virus-type-1-a-case-report
#18
Sergio Lupo, Carolina Berini, Camila Cánepa, Eduardo Santini Araujo, Mirna Biglione
INTRODUCTION: Soft-tissue sarcomas account for 0.7% of all malignant tumors, with an incidence rate of 3 per 100,000 persons/year. The undifferentiated pleomorphic sarcoma (UPS) with giant cells, a high grade tumor of soft tissue, is very unusual, especially in young adults before the age of 40. Human T-cell lymphotropic virus type 1 (HTLV-1) is a human retrovirus, classified as group 1 human carcinogens by The International Agency for Research on Cancer, that causes an aggressive malignancy known as adult T-cell lymphoma/leukemia and a progressive chronic inflammatory neurological disease named HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP)...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28560185/deregulation-of-micrornas-in-gastric-lymphomagenesis-induced-in-the-d3tx-mouse-model-of-helicobacter-pylori-infection
#19
Pauline Floch, Caroline Capdevielle, Cathy Staedel, Julien Izotte, Elodie Sifré, Amandine M Laur, Alban Giese, Victoria Korolik, Pierre Dubus, Francis Mégraud, Philippe Lehours
Helicobacter pylori infection is considered as an excellent model of chronic inflammation-induced tumor development. Our project focuses on gastric MALT lymphoma (GML) related to H. pylori infection and mediated by the chronic inflammatory process initiated by the infection. Recently, microRNAs (miRNAs) have emerged as a new class of gene regulators, which play key roles in inflammation and carcinogenesis acting as oncogenes or tumor suppressors. Their precise characterization in the development of inflammation and their contribution in regulating host cells responses to infection by H...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28555062/non-coding-rnas-in-hodgkin-lymphoma
#20
REVIEW
Anna Cordeiro, Mariano Monzó, Alfons Navarro
MicroRNAs (miRNAs), small non-coding RNAs that regulate gene expression by binding to the 3'-UTR of their target genes, can act as oncogenes or tumor suppressors. Recently, other types of non-coding RNAs-piwiRNAs and long non-coding RNAs-have also been identified. Hodgkin lymphoma (HL) is a B cell origin disease characterized by the presence of only 1% of tumor cells, known as Hodgkin and Reed-Stenberg (HRS) cells, which interact with the microenvironment to evade apoptosis. Several studies have reported specific miRNA signatures that can differentiate HL lymph nodes from reactive lymph nodes, identify histologic groups within classical HL, and distinguish HRS cells from germinal center B cells...
May 29, 2017: International Journal of Molecular Sciences
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