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https://www.readbyqxmd.com/read/29926655/-effects-of-hydrogen-sulfide-h-2-s-on-cardiac-hypertrophy-and-mirna-133a-mediated-ca-2-calcineurin-nfatc4-signal-pathway-in-rats
#1
Yang Wu, Yuan-Yuan Guo, Yuan-Yuan Zhang, Yi Zhang
OBJECTIVE: To investigate the effects of hydrogen sulfide (H2 S) on the negatively regulation of cardiomyocyte hypertrophy and the relationship between the effect of H2 S with miRNA-133a-mediated Ca2+ /calcineurin/NFATc4 signal pathway. METHODS: Cardiomyocyte hypertrophy was induced by isoproterenol (ISO). The cell surface area was measured by image analysis system (Leica). The expression of brain natriuretic peptide(BNP), β-myosin heavy chain(β-MHC), cystathionase (CSE), miRNA-133a, calcineurin (CaN) were detected by qRT-PCR...
January 8, 2018: Chinese Journal of Applied Physiology
https://www.readbyqxmd.com/read/29915929/identification-of-mir-146a-is-associated-with-the-aggressiveness-and-suppresses-proliferation-via-targeting-cdkn2a-in-breast-cancer
#2
Yanping Zhang, Shi Ding, Jie Yang, Xingfeng Chen, Weilin Huang
There is emerging evidence that some microRNAs can promote or suppress several human cancer development and progression. However, the profile and molecular mechanism of microRNAs for human breast cancer is poorly unknown. We used bioinformatics approaches to find new candidate diagnostic and therapeutic miRNAs in human breast cancer via analysis of TCGA RNA sequencing data and publicly GEO microarray data, in order to provide theoretical basis for the future investigations of breast cancer. Decreased expression miR-146a was identified as a key regulator of human breast cancer development and progression...
June 18, 2018: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29915595/dysregulated-microrna-involvement-in-multiple-sclerosis-by-induction-of-t-helper-17-cell-differentiation
#3
REVIEW
Chen Chen, Yifan Zhou, Jingqi Wang, Yaping Yan, Lisheng Peng, Wei Qiu
Multiple sclerosis (MS) is an immune-mediated demyelinating disease of the central nervous system. Growing evidence has proven that T helper 17 (Th17) cells are one of the regulators of neuroinflammation mechanisms in MS disease. Researchers have demonstrated that some microRNAs (miRNAs) are associated with disease activity and duration, even with different MS patterns. miRNAs regulate CD4+ T cells to differentiate toward various T cell subtypes including Th17 cells. In this review, we discuss the possible mechanisms of miRNAs in MS pathophysiology by regulating CD4+ T cell differentiation into Th17 cells, and potential miRNA targets for current disease-modifying treatments...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29907673/role-of-mir-98-and-its-underlying-mechanisms-in-systemic-lupus-erythematosus
#4
Lin Xie, Jinhua Xu
OBJECTIVE: T-lymphocyte apoptosis plays a critical role in the pathogenesis of systemic lupus erythematosus (SLE). However, the underlying regulatory mechanisms of apoptosis in SLE remain unclear. The aim of this study was to explore the role of miR-98 in SLE and its underlying mechanisms. METHODS: Western blotting and quantitative reverse transcription PCR (qRT-PCR) were used to analyze miR-98 and Fas expression. Luciferase reporter assays were performed to identify miR-98 targets...
June 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29906222/analysis-of-the-microrna-signature-driving-adaptive-right-ventricular-hypertrophy-in-an-ovine-model-of-congenital-heart-disease
#5
Rebecca Johnson Kameny, Youping He, Terry Zhu, Wenhui Gong, Gary W Raff, Cheryl J Chapin, Sanjeev A Datar, Jason Boehme, Akiko Hata, Jeffrey R Fineman
The right ventricular (RV) response to pulmonary arterial hypertension (PAH) is heterogeneous. Most patients have maladaptive changes with RV dilation and failure while some-especially patients with PAH secondary to congenital heart disease (CHD)-have an adaptive response with hypertrophy and preserved systolic function. Mechanisms for RV adaptation to PAH are unknown despite RV function being a primary determinant of mortality. In our CHD ovine model with fetally-implanted aortopulmonary shunt (shunt lambs), we previously demonstrated an adaptive physiologic RV response to increased afterload with hypertrophy...
June 15, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29904144/the-role-of-mir-122-in-the-dysregulation-of-glucose-6-phosphate-dehydrogenase-g6pd-expression-in-hepatocellular-cancer
#6
Juan M Barajas, Ryan Reyes, Maria J Guerrero, Samson T Jacob, Tasneem Motiwala, Kalpana Ghoshal
Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related deaths worldwide. Thus, a better understanding of molecular aberrations involved in HCC pathogenesis is necessary for developing effective therapy. It is well established that cancer cells metabolize energy sources differently to rapidly generate biomass. Glucose-6-phosphate-dehydrogenase (G6PD), the rate-limiting enzyme of the Pentose Phosphate Pathway (PPP), is often activated in human malignancies to generate precursors for nucleotide and lipid synthesis...
June 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29904099/genetic-variants-at-the-16p13-locus-confer-risk-for-eosinophilic-esophagitis
#7
Leah C Kottyan, Avery Maddox, Julian R Braxton, Emily M Stucke, Vince Mukkada, Philip E Putnam, J Pablo Abonia, Mirna Chehade, Robert A Wood, Robbie D Pesek, Brian P Vickery, Glenn T Furuta, Peter Dawson, Hugh A Sampson, Lisa J Martin, Jennifer A Kelly, Robert P Kimberly, Kathy Sivils, Patrick M Gaffney, Kenneth Kaufman, John B Harley, Marc E Rothenberg
Eosinophilic esophagitis (EoE) is a chronic inflammatory disease of the esophagus triggered by immune hypersensitivity to food. Herein, we tested whether genetic risk factors for known, non-allergic, immune-mediated diseases, particularly those involving autoimmunity, were associated with EoE risk. We used the high-density Immunochip platform, encoding 200,000 genetic variants for major auto-immune disease. Accordingly, 1214 subjects with EoE of European ancestry and 3734 population controls were genotyped and assessed using data directly generated or imputed from the previously published GWAS...
June 8, 2018: Genes and Immunity
https://www.readbyqxmd.com/read/29902577/early-metastatic-colorectal-cancers-show-increased-tissue-expression-of-mir-17-92-cluster-members-in-the-invasive-tumor-front
#8
Rikke Karlin Jepsen, Guy Wayne Novotny, Louise Laurberg Klarskov, Claus Heiner Bang-Bertelsen, Ida Trondhjem Haakansson, Anker Hansen, Ib Jarle Christensen, Lene Buhl Riis Ass, Estrid Høgdall
Accurate prediction of regional lymph node metastases (LNM) in endoscopically resected pT1 colorectal cancer (CRC) is crucial in treatment stratification for subsequent radical surgery. Several miRNAs have been linked to CRC invasion and metastasis, including the oncogenic miR-17/92 cluster, and expression levels might have predictive value in the risk assessment of early metastatic progression in CRC. We performed global miRNA microarray using tissue samples from the invasive front of pT1 CRC and investigated associations of the miR-17/92 cluster and presence of LNM...
June 11, 2018: Human Pathology
https://www.readbyqxmd.com/read/29900066/leukemia-cell-derived-microvesicles-induce-t-cell-exhaustion-via-mirna-delivery
#9
Jieke Cui, Qing Li, Mei Luo, Zhaodong Zhong, Shu Zhou, Lin Jiang, Na Shen, Zhe Geng, Hui Cheng, Li Meng, Shujuan Yi, Hui Sun, Feifei Wu, Zunmin Zhu, Ping Zou, Yong You, An-Yuan Guo, Xiaojian Zhu
T cell function in cancer patients is usually impaired due to the constitutive activation of immune checkpoint inhibitors. This state is known as 'exhaustion' and is often associated with the inefficient control of tumors or persistent infections. In this work, we investigated the role of leukemia cell-derived microvesicles (MVs) in T cell exhaustion. Following incubation with MVs from various sources, all T cell subtypes exhibited the exhaustion phonotype and impaired cytokine secretion in vitro. Mice models also showed the connection between immune checkpoint inhibitors and MV injection...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29897958/the-microrna-expression-signature-of-cd4-t-cells-in-the-transition-of-brucellosis-into-chronicity
#10
Ferah Budak, Salih Haldun Bal, Gulcin Tezcan, Emin Halis Akalın, Abdullah Yılmaz, Pınar Hız, Haluk Barbaros Oral
Brucellosis is a serious infectious disease that continues to be a significant cause of morbidity worldwide and across all ages. Despite early diagnosis and treatment, 10-30% of patients develop chronic brucellosis. Although there have been recent advances in our knowledge of Brucella virulence factors and hosts' immune response to the infection, there is a lack of clear data regarding how the infection bypasses the immune system and becomes chronic. The present study investigated immunological factors and their roles in the transition of brucellosis from an acute to a chronic infection in CD4+ T cells...
2018: PloS One
https://www.readbyqxmd.com/read/29885529/rna-interfering-molecule-delivery-from-in-situ-forming-biodegradable-hydrogels-for-enhancement-of-bone-formation-in-rat-calvarial-bone-defects
#11
Minh K Nguyen, Oju Jeon, Phuong N Dang, Cong T Huynh, Davood Varghai, Hooman Riazi, Alexandra McMillan, Samuel Herberg, Eben Alsberg
RNA interference (RNAi) may be an effective and valuable tool for promoting the growth of functional tissue, as short interfering RNA (siRNA) and microRNA (miRNA) can block the expression of genes that have negative effects on tissue regeneration. Our group has recently reported that the localized and sustained presentation of siRNA against noggin (siNoggin) and miRNA-20a from in situ forming poly(ethylene glycol) (PEG) hydrogels enhanced osteogenic differentiation of encapsulated human bone marrow-derived mesenchymal stem cells (hMSCs)...
June 6, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29881372/mir-29a-3p-t-bet-regulatory-circuit-is-altered-in-t-cells-of-patients-with-hashimoto-s-thyroiditis
#12
Stana Tokić, Mario Štefanić, Ljubica Glavaš-Obrovac, Amit Kishore, Zdenka Navratilova, Martin Petrek
Objective: Hashimoto's thyroiditis (HT) is a common autoimmune thyroid disorder that frequently evolves from asymptomatic, T-cell mediated chronic inflammation toward overt hypothyroidism. Previously, we have demonstrated a role for T-bet, a T helper 1/CD8+ T cell transcription factor (TF), and FoxP3, a regulatory T cell TF, in disease progression and severity, but the basis behind their altered mRNA expression remains unknown. In this study, we aimed to leverage the role for microRNAs, representing negative transcriptional regulators, across the spectrum of HT clinical presentations using the same, well-characterized RNA sample cohort...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29880533/microrna-related-genetic-variants-associated-with-overall-survival-of-head-and-neck-squamous-cell-carcinoma
#13
Owen M Wilkins, Alexander J Titus, Lucas A Salas, Jiang Gui, Melissa Eliot, Rondi A Butler, Erich M Sturgis, Guojun Li, Karl T Kelsey, Brock C Christensen
Head and neck squamous cell carcinoma (HNSCC) is commonly diagnosed at an advanced stage and prognosis for such patients is poor. There remains a gap in our understanding of genetic variants related with HNSCC prognosis. MicroRNA-related single nucleotide polymorphisms (miR-SNPs) are a class of genetic variants with gene regulatory potential. We used a genome-scale approach and independent patient populations in a two-stage approach to test 40,286 common miR-SNPs for association with HNSCC survival in the discovery population (n = 847), and selected the strongest associations for replication in validation phase cases (n = 1236)...
June 7, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29873263/seed-targeting-with-tiny-anti-mir-1297-inhibits-emt-in-melanoma-cells
#14
Y Han, X Li, C Ma, X Ji, T Li, X Zheng, J Zhang, J Yan, D Zhang, J Bai
MicroRNAs (miRNAs) are small, noncoding RNAs that have tissue- and cell-specific expression. They have the ability to regulate the malignant proliferation and transformation of tumor cells. The research focused on the expression and role of miR-1297 in melanoma. We firstly found that miR-1297 is up-regulated in melanoma tissues and cell lines. Functionally, phosphatase and tension homology deleted on chromsome ten gene (PTEN) was used as a potential target for miR-1297 and detected using Western blotting and immunohistochemistry (IHC)...
June 6, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29871690/a-survey-of-microrna-single-nucleotide-polymorphisms-identifies-novel-breast-cancer-susceptibility-loci-in-a-case-control-population-based-study-of-african-american-women
#15
Jeannette T Bensen, Mariaelisa Graff, Kristin L Young, Praveen Sethupathy, Joel Parker, Chad V Pecot, Kevin Currin, Stephen A Haddad, Edward A Ruiz-Narváez, Christopher A Haiman, Chi-Chen Hong, Lara E Sucheston-Campbell, Qianqian Zhu, Song Liu, Song Yao, Elisa V Bandera, Lynn Rosenberg, Kathryn L Lunetta, Christine B Ambrosone, Julie R Palmer, Melissa A Troester, Andrew F Olshan
BACKGROUND: MicroRNAs (miRNAs) regulate gene expression and influence cancer. Primary transcripts of miRNAs (pri-miRNAs) are poorly annotated and little is known about the role of germline variation in miRNA genes and breast cancer (BC). We sought to identify germline miRNA variants associated with BC risk and tumor subtype among African-American (AA) women. METHODS: Under the African American Breast Cancer Epidemiology and Risk (AMBER) Consortium, genotyping and imputed data from four studies on BC in AA women were combined into a final dataset containing 224,188 miRNA gene single nucleotide polymorphisms (SNPs) for 8350 women: 3663 cases and 4687 controls...
June 5, 2018: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29867969/microrna-in-t-cell-development-and-t-cell-mediated-acute-graft-versus-host-disease
#16
REVIEW
Christian Koenecke, Andreas Krueger
Acute graft-versus-host disease (GvHD) is still a major cause of treatment-related mortality after allogeneic stem cell transplantation. Allo-antigen recognition of donor T cells after transplantation account for the onset and persistence of this disease. MicroRNAs (miRNAs) are molecular regulators involved in numerous processes during T-cell development, homeostasis, and activation. Thus, miRNAs also contribute to pathological T-cell function during GvHD. Given their capacity of fine-tuning T-cell function, miRNAs have emerged as promising therapeutic targets to curtail acute GvHD, but simultaneously maintain T-cell-mediated graft-versus-tumor effects...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29863671/bronchoalveolar-lavage-exosomes-in-lipopolysaccharide-induced-septic-lung-injury
#17
Zhihong Yuan, Brahmchetna Bedi, Ruxana T Sadikot
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) represent a heterogeneous group of lung diseases which continues to have a high morbidity and mortality. The molecular pathogenesis of ALI is being better defined; however, because of the complex nature of the disease molecular therapies have yet to be developed. Here we use a lipopolysaccharide (LPS) induced mouse model of acute septic lung injury to delineate the role of exosomes in the inflammatory response. Using this model, we were able to show that mice that are exposed to intraperitoneal LPS secrete exosomes in Broncho-alveolar lavage (BAL) fluid from the lungs that are packaged with miRNA and cytokines which regulate inflammatory response...
May 21, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29859273/mir-487a-3p-upregulated-in-type-1-diabetes-targets-ctla4-and-foxo3
#18
Magdalena Zurawek, Agnieszka Dzikiewicz-Krawczyk, Katarzyna Izykowska, Iwona Ziolkowska-Suchanek, Bogda Skowronska, Maria Czainska, Marta Podralska, Piotr Fichna, Grzegorz Przybylski, Marta Fichna, Jerzy Nowak
AIMS: Type 1 diabetes (T1D) is an autoimmune disorder caused by the T-cell mediated destruction of the insulin-producing pancreatic beta cells. T1D is a consequence of complex processes, influenced by genetic, epigenetic and environmental factors. MicroRNAs (miRNAs) are small non-coding RNAs that target multiple mRNAs and regulate gene expression. The implication of miRNAs in T1D pathogenesis, as potential modulators of immune response genes, remains poorly defined. The aim of this study was to investigate the expression profile of miRNAs in new onset T1D and the impact of deregulated miRNAs on target genes...
May 30, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29858718/robust-label-free-microrna-detection-using-one-million-isfet-array
#19
Anurup Ganguli, Yoshihiko Watanabe, Michael T Hwang, Jui-Cheng Huang, Rashid Bashir
Detection of nucleic acid molecules is one of the most pervasive assays in biology, medicine, and agriculture applications. Currently, most comely used DNA/RNA detection platforms use fluorescence labeling and require lab-scale setting for performing the assay. There is a need for developing less expensive, label-free, and rapid detection of biomolecules with minimal utilization of resources. Use of electrical approaches for detection of biomolecules by utilizing their inherent charge is a promising direction for biosensing assays...
June 2, 2018: Biomedical Microdevices
https://www.readbyqxmd.com/read/29857952/mir-17-92-cluster-and-immunity
#20
REVIEW
George Kuo, Chao-Yi Wu, Huang-Yu Yang
MicroRNAs (MiR, MiRNA) are small single-stranded non-coding RNAs that play an important role in the regulation of gene expression. MircoRNAs exert their effect by binding to complementary nucleotide sequences of the targeted messenger RNA, thus forming an RNA-induced silencing complex. The mircoRNA-17-92 cluster encoded by the miR-17-92 host gene is first found in malignant B-cell lymphoma. Recent research identifies the miR-17-92 cluster as a crucial player in the development of the immune system, the heart, the lung, and oncogenic events...
May 29, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
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