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Mir155

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https://www.readbyqxmd.com/read/28752075/mir-155-effectively-induces-apoptosis-in-k562-philadelphia-positive-cell-line-through-upregulation-of-p27kip1
#1
Mahdi Edalati Fathabad, Morteza Karimipoor, Shaban Alizadeh, Asghar Abdoli, Amir Atashi, Mahtab Sayadi
Introduction: Chronic myelogenous leukemia (CML) is a myeloproliferative disorder caused by the Philadelphia chromosome translocation, at (9; 22), which results in BCR-ABL fusion tyrosine kinase oncoprotein. This fusion induces down-regulation of miR-155. Upregulation of miR-155 can influence cell fate via the effect on p27kip1 and apoptosis. The aim of this study was to induce apoptosis in K562 CML cell line by overexpression of miR-155. Methods: The K562 cell line was transfected with pLenti-III-pre mir155-GFP constructs through electroporation...
2017: BioImpacts: BI
https://www.readbyqxmd.com/read/28744126/gold-nanoparticle-based-mir155-antagonist-macrophage-delivery-restores-the-cardiac-function-in-ovariectomized-diabetic-mouse-model
#2
Chengming Jia, Hui Chen, Mengying Wei, Xiangjie Chen, Yajun Zhang, Liang Cao, Ping Yuan, Fangyuan Wang, Guodong Yang, Jing Ma
Diabetic cardiomyopathy is a common disease in postmenopausal women, in whom the estrogen deficiency aggravates the pathology. In this study, we have found that estrogen deficiency due to ovariectomy aggravates the inflammation in the hearts of diabetic mice, as depicted by excessive proinflammatory type 1 macrophages (M1) over anti-inflammatory type 2 macrophages (M2). Accordingly, an additional increase of reactive oxygen species, cell apoptosis, cardiac hypertrophy, and fibrosis was observed in the hearts of ovariectomized diabetic mice, in comparison with the diabetes-only group...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28738148/biofunctional-polymer-lipid-hybrid-high-density-lipoprotein-mimicking-nanoparticles-loading-anti-mir155-for-combined-antiatherogenic-effects-on-macrophages
#3
Jing Lu, Yi Zhao, Xiaoju Zhou, Jian Hua He, Yun Yang, Cuiping Jiang, Zitong Qi, Wenli Zhang, Jianping Liu
A biofunctional polymer-lipid hybrid high-density lipoprotein-mimicking nanoparticle (HNP) loading anti-miR155 was constructed for combined antiatherogenic effects on macrophages. The HNP consisted of an anti-miR155 core condensed by acid-labile polyethylenimine (acid-labile PEI) polymers and a lipid bilayer coat that was decorated with apolipoprotein A-1, termed acid-labile PEI/HNP. The acid-labile PEI was synthesized with low-molecular-weight PEI and glutaraldehyde to reduce the cytotoxicity and facilitate nucleic acids escaping from acidic endolysosomes...
August 3, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28719617/microrna-155-deficiency-leads-to-decreased-autoantibody-levels-and-reduced-severity-of-nephritis-and-pneumonitis-in-pristane-induced-lupus
#4
Harald Leiss, Wilhelm Salzberger, Barbara Jacobs, Irina Gessl, Nicolas Kozakowski, Stephan Blüml, Antonia Puchner, Attila Kiss, Bruno K Podesser, Josef S Smolen, Georg H Stummvoll
OBJECTIVE: We herein examine the role of endogenous miR155 in the development of systemic manifestations in pristane induced lupus. MATERIALS AND METHODS: Systemic lupus in miR155-deficient and wild type mice was induced upon injection of pristane and analyzed after 8 months, PBS-injected mice served as controls. Glomerulonephritis and pneumonitis were quantified using the kidney biopsy score and a newly adapted histomorphometric image analysis system; lung tissue was further analyzed by tissue cytometry...
2017: PloS One
https://www.readbyqxmd.com/read/28609584/endothelial-nitric-oxide-synthase-inhibition-triggers-inflammatory-responses-in-the-brain-of-male-rats-exposed-to-ischemia-reperfusion-injury
#5
Rosaria Greco, Chiara Demartini, Anna Maria Zanaboni, Fabio Blandini, Diana Amantea, Cristina Tassorelli
Nitric oxide (NO) derived from endothelial NO synthase (eNOS) plays a role in preserving and maintaining the brain's microcirculation, inhibiting platelet aggregation, leukocyte adhesion, and migration. Inhibition of eNOS activity results in exacerbation of neuronal injury after ischemia by triggering diverse cellular mechanisms, including inflammatory responses. To examine the relative contribution of eNOS in stroke-induced neuroinflammation, we analyzed the effects of systemic treatment with l-N-(1-iminoethyl)ornithine (L-NIO), a relatively selective eNOS inhibitor, on the expression of MiR-155-5p, a key mediator of innate immunity regulation and endothelial dysfunction, in the cortex of male rats subjected to transient middle cerebral artery occlusion (tMCAo) followed by 24 hr of reperfusion...
June 13, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28472949/distinct-gene-expression-profiles-associated-with-notch-ligands-delta-like-4-and-jagged1-in-plaque-material-from-peripheral-artery-disease-patients-a-pilot-study
#6
Giorgio Aquila, Cinzia Fortini, Antonio Pannuti, Serena Delbue, Micaela Pannella, Marco Bruno Morelli, Cristiana Caliceti, Fausto Castriota, Monica de Mattei, Alessia Ongaro, Agnese Pellati, Pasquale Ferrante, Lucio Miele, Luigi Tavazzi, Roberto Ferrari, Paola Rizzo, Alberto Cremonesi
BACKGROUND: The lack of early diagnosis, progression markers and effective pharmacological treatment has dramatic unfavourable effects on clinical outcomes in patients with peripheral artery disease (PAD). Addressing these issues will require dissecting the molecular mechanisms underlying this disease. We sought to characterize the Notch signaling and atherosclerosis relevant markers in lesions from femoral arteries of symptomatic PAD patients. METHODS: Plaque material from the common femoral, superficial femoral or popliteal arteries of 20 patients was removed by directional atherectomy...
May 4, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28463694/tumor-associated-macrophage-targeted-microrna-delivery-with-dual-responsive-polypeptide-nanovectors-for-anti-cancer-therapy
#7
Lanlan Liu, Huqiang Yi, Huamei He, Hong Pan, Lintao Cai, Yifan Ma
Repolarizing Tumor-associated macrophages (TAMs) to anti-tumor M1 macrophages with microRNA (miR) is a plausible approach for cancer treatment. However, how to achieve TAM-targeted miR delivery remains a challenge. The present study generated redox/pH dual-responsive hybrid polypeptide nanovectors, which consisted of self-crosslinked redox-responsive nanoparticles based on galactose-functionalized n-butylamine-poly(l-lysine)-b-poly(l-cysteine) polypeptides (GLC) coated with DCA-grafted sheddable PEG-PLL (sPEG) copolymers...
April 25, 2017: Biomaterials
https://www.readbyqxmd.com/read/28450853/micromanagement-of-immune-system-role-of-mirnas-in-helminthic-infections
#8
REVIEW
Naina Arora, Shweta Tripathi, Aloukick K Singh, Prosenjit Mondal, Amit Mishra, Amit Prasad
Helminthic infections fall under neglected tropical diseases, although they inflict severe morbidity to human and causes major economic burden on health care system in many developing countries. There is increased effort to understand their immunopathology in recent days due to their immuno-modulatory capabilities. Immune response is primarily controlled at the transcriptional level, however, microRNA-mediated RNA interference is emerging as important regulatory machinery that works at the translation level...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28413645/long-non-coding-rna-ccat1-is-overexpressed-in-oral-squamous-cell-carcinomas-and-predicts-poor-prognosis
#9
Ganesan Arunkumar, Avaniyapuram Kannan Murugan, Harikrishnan Prasanna Srinivasa Rao, Shanmugam Subbiah, Ramamurthy Rajaraman, Arasambattu Kannan Munirajan
Oral squamous cell carcinoma (SCC) is the most common malignant tumor in India with 5-year survival rates totaling <50%. Recently, dysregulation of non-coding RNA was reported as a potential hallmark of carcinogenesis. Colon Cancer Associated Transcript 1 (CCAT1), an lncRNA located in chromosome 8q24, close to the c-Myc gene, has been reported to be overexpressed in many human cancers. In the present study, the authors analyzed the expression of CCAT1, c-Myc and the miRNAs miR155-5p, let7b-5p, miR490-3p and miR218-5p sponged by CCAT1 in 60 oral tumor and 8 normal tissue samples by reverse transcription-quantitative polymerase chain reaction...
April 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28402921/mir-155-promotes-cell-proliferation-and-inhibits-apoptosis-by-pten-signaling-pathway-in-the-psoriasis
#10
Longjiang Xu, Hong Leng, Xin Shi, Jiang Ji, Jinxiang Fu, Hong Leng
MicroRNAs (miRNAs) have been demonstrated to contribute to malignant progression in psoriasis development. The purposes of the study was to evaluated the effects of miRNA-155 on cell proliferation, migration and apoptosis in psoriasis development via PTEN singaling pathway and identify its direct target protein. Quantitative real-time RT-PCR (qRT-PCR) was performed to examine the level of miR-155 in psoriasis cells, miR-155 was downregulated in a psoriasis cell line Hacat by transfected with small interfering RNA (siRNA), respectively...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28371892/blocking-mir155hg-mir-155-axis-inhibits-mesenchymal-transition-in-glioma
#11
Xuechao Wu, Yingyi Wang, Tianfu Yu, Er Nie, Qi Hu, Weining Wu, Tongle Zhi, Kuan Jiang, Xiefeng Wang, Xiaojie Lu, Hailin Li, Ning Liu, Junxia Zhang, Yongping You
Background.: MIR155 host gene (MIR155HG) is a long noncoding RNA that has been considered as the primary micro (mi)RNA of miR-155. MIR155HG plays an essential role in hematopoiesis, inflammation, and tumorigenesis. Our study investigated the clinical significance, biological function, mechanisms, and small-molecule inhibitors of the MIR155HG/miR-155 axis in glioma. Methods.: We analyzed the expression of the MIR155HG/miR-155 axis and the correlation with glioma grade and patient survival using 2 different glioma gene expression datasets...
March 24, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28315615/mir155-regulation-of-ubiquilin1-and-ubiquilin2-implications-in-cellular-protection-and-tumorigenesis
#12
Sanjay Yadav, Nishant Singh, Parag P Shah, David A Rowbotham, Danial Malik, Ankita Srivastav, Jai Shankar, Wan L Lam, William W Lockwood, Levi J Beverly
Ubiquilin (UBQLN) proteins are adaptors thought to link ubiquitinated proteins to the proteasome. However, our lab has recently reported a previously unappreciated role for loss of UBQLN in lung cancer progression. In fact, UBQLN genes are lost in over 50% of lung cancer samples examined. However, a reason for the loss of UBQLN has not been proposed, nor has a selective pressure that could lead to deletion of UBQLN been reported. Diesel Exhaust Particles (DEP) are a major concern in the large cities of developing nations and DEP exposed populations are at an increased risk of developing a number of illnesses, including lung cancer...
April 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28296555/the-screening-of-a-microrna-expression-during-development-of-human-macrophages-and-mouse-dendritic-cells
#13
Eui Young So, Trisha Winchester, Toru Ouchi
There is increasing evidence showing specific roles of microRNA in cell differentiation and cancer progression. Here we examine miRNA profiles during maturation of monocytes and bone marrow-derived dendritic cells (BMDCs) in human and mouse, respectively. We have identified significant changes of various miRNA expression during monocyte and BMDC monocyte development via miRNA microarrays, confirmed by quantitative PCR. Increases in miR155 expression positively correlated with increasing maturity of monocyte and BMDC in both mouse and human microarrays, indicating its importance in development...
March 4, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28219227/-targeting-mir155-restores-chemotherapy-sensitivity-in-drug-resistant-myeloma-cell-line-rpmi8226-dox-cells
#14
C R Xiao, X L Hong, J S Hu, Y M Chen, Q Y Lu
Objective: To explore the mechanism of abnormal expression of microRNA155 (miR155) in myeloma drug-resistance to probe the possibility of inhibiting miR155 expression to restore chemotherapy sensitivity and its molecular mechanism in drug-resistant myeloma cells. Methods: Drug-resistant myeloma cell-line RPMI8226/DOX was established by culturing RPMI8226 cells with continuous low concentration and intermittent gradually increasing concentration of doxorubicin in vitro; The levels of miR155 mRNA were measured by qRT-PCR, and both proteins FOXO3a and BCL-2 expressions were detected by Western blot in cell-lines RPMI8226/S and RPMI8226/Dox...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28160157/a-comparison-of-serum-mirnas-influencing-metastatic-growth-of-emt6-vs-4thm-tumor-cells-in-wild-type-and-cd200r1ko-mice
#15
Reginald M Gorczynski, Fang Zhu, Zhiqi Chen, Ohla Kos, Ismat Khatri
PURPOSE: We investigated whether miRNAs in exosomes from EMT6 or 4THM tumor-bearing mice played a role in regulating inflammatory cytokine expression and/or metastasis in WT mice injected with EMT6 and/or 4THM tumor cells. METHODS: EMT6 tumors in BALB/c CD200R1KO mice resolve following surgical resection of localized tumor and immunization with irradiated EMT6 cells along with CpG as adjuvant. Wild-type (WT) animals treated in the same fashion develop pulmonary and liver metastases within 20 days of surgery...
April 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28143572/poly-lactic-acid-nanoparticles-pla-np-promote-physiological-modifications-in-lung-epithelial-cells-and-are-internalized-by-clathrin-coated-pits-and-lipid-rafts
#16
Camila Macedo da Luz, Matthew Samuel Powys Boyles, Priscila Falagan-Lotsch, Mariana Rodrigues Pereira, Henrique Rudolf Tutumi, Eidy de Oliveira Santos, Nathalia Balthazar Martins, Martin Himly, Aniela Sommer, Ilse Foissner, Albert Duschl, José Mauro Granjeiro, Paulo Emílio Corrêa Leite
BACKGROUND: Poly-lactic acid nanoparticles (PLA-NP) are a type of polymeric NP, frequently used as nanomedicines, which have advantages over metallic NP such as the ability to maintain therapeutic drug levels for sustained periods of time. Despite PLA-NP being considered biocompatible, data concerning alterations in cellular physiology are scarce. METHODS: We conducted an extensive evaluation of PLA-NP biocompatibility in human lung epithelial A549 cells using high throughput screening and more complex methodologies...
January 31, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28006867/differential-profile-of-activated-regulatory-t-cell-subsets-and-micrornas-in-tolerant-liver-transplant-recipients
#17
B Revilla-Nuin, A de Bejar, L Martínez-Alarcón, J I Herrero, C M Martínez-Cáceres, P Ramírez, A Baroja-Mazo, J A Pons
Regulatory T cells (Tregs) play a potential role in operational tolerance in liver transplant patients, and microRNAs (miRNAs) are known to be involved in immunological responses and tolerance. Thus, we analyzed the implication of different peripheral blood Treg subsets and miRNAs on liver transplantation tolerance in 24 tolerant (Tol) and 23 non-tolerant (non-Tol) liver transplant recipients by cellular, genetic and epigenetic approximation. Non-Tol patients had a lower demethylation rate of the FOXP3 Treg-specific demethylated region (TSDR) than Tol patients that correlated with the frequency of circulating Tregs...
December 22, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27933060/regulators-of-tfh-cell-differentiation
#18
REVIEW
Gajendra M Jogdand, Suchitra Mohanty, Satish Devadas
The follicular helper T (Tfh) cells help is critical for activation of B cells, antibody class switching, and germinal center (GC) formation. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), ICOS, programed death 1 (PD-1), B cell lymphoma 6 (BCL-6), and IL-21. They are involved in clearing infections and are adversely linked with autoimmune diseases and also have a role in viral replication as well as clearance. On the one hand, Tfh cells are generated from naive CD4(+) T cells with sequential steps involving cytokine signaling (IL-21, IL-6, IL-12, activin A), migration, and positioning in the GC by CXCR5, surface receptors (ICOS/ICOSL, signaling lymphocyte activation molecule-associated protein/signaling lymphocyte activation molecule) as well as transcription factor (BCL-6, c-Maf, and signal transducer and activator of transcription 3) signaling and repressor miR155...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27882350/plasma-vesicle-mirnas-for-therapy-response-monitoring-in-hodgkin-lymphoma-patients
#19
Monique A J van Eijndhoven, Josée M Zijlstra, Nils J Groenewegen, Esther E E Drees, Stuart van Niele, S Rubina Baglio, Danijela Koppers-Lalic, Hans van der Voorn, Sten F W M Libregts, Marca H M Wauben, Renee X de Menezes, Jan R T van Weering, Rienk Nieuwland, Lydia Visser, Anke van den Berg, Daphne de Jong, D Michiel Pegtel
BACKGROUND. Cell-free circulating nucleic acids, including 22-nt microRNAs (miRNAs), represent noninvasive biomarkers for treatment response monitoring of cancer patients. While the majority of plasma miRNA is bound to proteins, a smaller, less well-characterized pool is associated with extracellular vesicles (EVs). Here, we addressed whether EV-associated miRNAs reflect metabolic disease in classical Hodgkin lymphoma (cHL) patients. METHODS. With standardized size-exclusion chromatography (SEC), we isolated EV-associated extracellular RNA (exRNA) fractions and protein-bound miRNA from plasma of cHL patients and healthy subjects...
November 17, 2016: JCI Insight
https://www.readbyqxmd.com/read/27870736/lidocaine-administration-controls-micrornas-alterations-observed-after-lung-ischemia-reperfusion-injury
#20
Lisa Rancan, Carlos Simón, Emmeline Marchal-Duval, Javier Casanova, Sergio Damian Paredes, Alberto Calvo, Cruz García, David Rincón, Agustín Turrero, Ignacio Garutti, Elena Vara
BACKGROUND: Ischemia-reperfusion injury (IRI) is associated with morbidity and mortality. MicroRNAs (miRNAs) have emerged as regulators of IRI, and they are involved in the pathogenesis of organ rejection. Lidocaine has proven anti-inflammatory activity in several tissues but its modulation of miRNAs has not been investigated. This work aims to investigate the involvement of miRNAs in lung IRI in a lung auto-transplantation model and to investigate the effect of lidocaine. METHODS: Three groups (sham, control, and Lidocaine), each comprising 6 pigs, underwent a lung autotransplantation...
December 2016: Anesthesia and Analgesia
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