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https://www.readbyqxmd.com/read/29769011/evolving-strategies-for-the-treatment-of-t-cell-lymphoma-a-systematic-review-and-recent-patents
#1
Kamel Laribi, Mustapha Alani, Catherine Truong, Alix Baugier de Materre
OBJECTIVE: Mature T-cell lymphomas are a heterogeneous group of T-cell malignancies with a poor outcome. The discovery of new molecular biomarkers has led to the emergence of new drugs in recent years that target various signaling pathways. METHOD: We examined all pertinent published patents through 2015 that analyzed novel methods for the diagnosis and treatment of T cell lymphoma, as well as related published and unpublished studies. Selection criteria were established before data collection...
May 16, 2018: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/29768211/long-term-persistence-of-exhausted-cd8-t-cells-in-chronic-infection-is-regulated-by-microrna-155
#2
Erietta Stelekati, Zeyu Chen, Sasikanth Manne, Makoto Kurachi, Mohammed-Alkhatim Ali, Keith Lewy, Zhangying Cai, Kito Nzingha, Laura M McLane, Jennifer L Hope, Adam J Fike, Peter D Katsikis, E John Wherry
Persistent viral infections and tumors drive development of exhausted T (TEX ) cells. In these settings, TEX cells establish an important host-pathogen or host-tumor stalemate. However, TEX cells erode over time, leading to loss of pathogen or cancer containment. We identified microRNA (miR)-155 as a key regulator of sustained TEX cell responses during chronic lymphocytic choriomeningitis virus (LCMV) infection. Genetic deficiency of miR-155 ablated CD8 T cell responses during chronic infection. Conversely, enhanced miR-155 expression promoted expansion and long-term persistence of TEX cells...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29720426/microrna-155-modulates-acute-graft-versus-host-disease-by-impacting-t-cell-expansion-migration-and-effector-function
#3
Nina C Zitzer, Katiri Snyder, Xiamoei Meng, Patricia A Taylor, Yvonne A Efebera, Steven M Devine, Bruce R Blazar, Ramiro Garzon, Parvathi Ranganathan
MicroRNA-155 (miR-155) is a small noncoding RNA critical for the regulation of inflammation as well as innate and adaptive immune responses. MiR-155 has been shown to be dysregulated in both donor and recipient immune cells during acute graft-versus-host disease (aGVHD). We previously reported that miR-155 is upregulated in donor T cells of mice and humans with aGVHD and that mice receiving miR-155-deficient (miR155-/- ) splenocytes had markedly reduced aGVHD. However, molecular mechanisms by which miR-155 modulates T cell function in aGVHD have not been fully investigated...
May 2, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29698509/microrna-425-and-microrna-155-cooperatively-regulate-atrial-natriuretic-peptide-expression-and-cgmp-production
#4
Sara Vandenwijngaert, Clara D Ledsky, Obiajulu Agha, Connie Wu, Dongjian Hu, Aranya Bagchi, Ibrahim J Domian, Emmanuel S Buys, Christopher Newton-Cheh, Donald B Bloch
AIMS: Atrial natriuretic peptide (ANP), secreted primarily by atrial cardiomyocytes, decreases blood pressure by raising cyclic 3',5'-guanosine monophosphate (cGMP) levels and inducing vasorelaxation, natriuresis, and diuresis. Raising the level of ANP has been shown to be an effective treatment for hypertension. To advance the future development of an anti-microRNA (miR) approach to increasing expression of ANP, we investigated the regulation of NPPA expression by two miRs: miR-425 and miR-155...
2018: PloS One
https://www.readbyqxmd.com/read/29686722/energy-restriction-exercise-and-atorvastatin-treatment-improve-endothelial-dysfunction-and-inhibit-mirna-155-in-the-erectile-tissue-of-the-aged-rat
#5
B Rocha, A R Rodrigues, I Tomada, M J Martins, J T Guimarães, A M Gouveia, H Almeida, D Neves
Background: Endothelial dysfunction underlies cardiovascular disease that frequently affects aged individuals. Characterized by local decrease in nitric oxide, it results from down-regulation of endothelial nitric oxide synthase (eNOS) expression/activity. Aiming to elucidate the molecular mechanisms involved in age-related endothelial dysfunction and to unveil potential therapeutic targets, we tested how diet pattern, exercise and atorvastatin modulate the expression of eNOS, inducible NOS (iNOS), endothelin-1, sirtuins (SIRT) and microRNA-155 in the erectile tissue of high-fat fed aged rats...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29661714/microrna-155-up-regulation-in-the-cns-is-strongly-correlated-to-down-s-syndrome-dementia
#6
Esmerina Tili, Louisa Mezache, Jean-Jacques Michaille, Vicky Amann, James Williams, Paige Vandiver, Maria Quinonez, Paolo Fadda, Adel Mikhail, Gerard Nuovo
This study examined the molecular correlates of Down's dementia. qRTPCR for chromosome 21 microRNAs was correlated with in situ hybridization, immunohistochemistry for microRNA targets, mRNAs located on chromosome 21, and neurofibrillary tangles in human and the Ts65 dn mouse Down's model. qRTPCR for the microRNAs on the triplicated chromosome showed miR-155 dominance in brain tissues (14.3 fold increase, human and 24.2 fold increase, mouse model) that co-expressed with hyperphosphorylated tau protein. miR-155 was not elevated in Alzheimer's disease or neonates with Downs' syndrome...
March 26, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29660753/crataegus-special-extract-ws-1442-effects-on-enos-and-microrna-155
#7
Xinwen Wang, Yan Liang, Jian Shi, Hao-Jie Zhu, Barry E Bleske
Increased expression of microRNA 155 (miR-155) results in a decrease in endothelial nitric oxide synthase (eNOS) expression and impaired endothelial function. Factors that have been shown to increase expression of miR-155 may be mitigated by WS 1442, an extract of hawthorn leaves and flowers ( Crataegus special extract) that contains a range of pharmacologically active substances including oligomeric proanthocyanidins and flavonoids. The purpose of this study is to determine the effect of WS 1442 on the expression of miR-155 and eNOS in the presence of tumor necrosis factor (TNF- α )...
April 16, 2018: Planta Medica
https://www.readbyqxmd.com/read/29660336/microrna-155-inversely-correlates-with-esophageal-cancer-progression-through-regulating-tumor-associated-macrophage-fgf2-expression
#8
Peng Wang, Li-Juan Xu, Jie-Jie Qin, Lu Zhang, Gui-Hua Zhuang
Esophageal cancer (EC) is one of the most common malignancies with high incidence and mortality. Tumor-associated macrophages (TAMs) in the tumor microenvironment have been linked to the accelerated tumor progression. MicroRNAs (miR) are 19-25 nucleotide-long, noncoding RNA molecules, functioning as modulators of gene expression, and mediate a variety of biological functions, including tumor growth. In the present study, the effects and molecular mechanism of miR-155 in TAMs isolated from EC were explored. The expression of miR-155 and fibroblast growth factor-2 (FGF2) in EC tissues and cell lines were analyzed using reverse transcription-quantitative PCR (qRT-PCR) and western blot assays...
April 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29643534/-in-vivo-imaging-of-breast-tumors-by-a-99m-tc-radiolabeled-probe-targeting-microrna-155-in-mice-models
#9
L Kang, Y Huo, R F Wang, C L Zhang, P Yan, X J Xu
OBJECTIVE: MicroRNA-155 (miR-155) is significantly highly expressed in breast cancer, lung cancer, liver cancer and other malignant tumors. This study was to design and construct a radiolabeled probe targeting miR-155 for in vivo imaging in breast cancer. METHODS: Anti-miR-155 oligonucleotide (AMO-155) was chemically synthesized with 2' OMe modification. Its 5' end was linked with acetyl amine group. After chelated with a bifunctional chelator NHS-MAG3, AMO-155 was radiolabeled with 99m Tc using stannous chloride...
April 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29601851/microrna-155-expression-and-function-in-aml-an-evolving-paradigm
#10
REVIEW
Nisha Narayan, Cameron P Bracken, Paul G Ekert
Acute myeloid leukemia (AML) arises when immature myeloid blast cells acquire multiple, recurrent genetic and epigenetic changes that results in dysregulated proliferation. Acute leukemia is the most common form of paediatric cancer, with AML accounting for ~20% of all leukemias in children. The genomic aberrations that drive AML inhibit myeloid differentiation and activate signal transduction pathways that drive proliferation. MicroRNAs, a class of small (~22 nucleotide) non-coding RNA that post-transcriptionally suppress the expression of specifically targeted transcripts, are also frequently dysregulated in AML which may prove useful for the purposes of disease classification, prognosis and future therapeutic approaches...
March 27, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29595245/stimuli-responsive-dna-microcapsules-for-sers-sensing-of-trace-microrna
#11
Xia Yang, Shufan Wang, Yue Wang, Yi He, Yaqin Chai, Ruo Yuan
In this work, one stimuli-responsive DNA microcapsule was designed to combine duplex-specific nuclease (DSN) amplification strategy and SERS technology for sensitive detection of MicroRNA 155 (miRNA155). Firstly, Toluidine blue (TB) as Raman dye and CaCO3 as core-templates co-precipitated to form TB@CaCO3 composite. Then, DNA networks were layer by layer (LbL) constructed with oligonucleotide layers crosslinked by Linker ssDNA L to lock TB@CaCO3 inside. In the presence of EDTA, the core CaCO3 would be dissolved to form TB loading DNA microcapsule...
March 29, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29588181/spectroelectrochemical-detection-of-microrna-155-based-on-functional-rna-immobilization-onto-ito-gnp-nanopattern
#12
Mohsen Mohammadniaei, Jinho Yoon, Taek Lee, Jeong-Woo Choi
We fabricated a microRNA biosensor using the combination of surface enhanced Raman spectroscopy (SERS) and electrochemical (EC) techniques. For the first time, the weaknesses of each techniques for microRNA detection was compensated by the other ones to give rise to the specific and wide-range detection of miR-155. A single stranded 3' methylene blue (MB) and 5' thiol-modified RNA (MB-ssRNA-SH) was designed to detect the target miR-155 and immobilized onto the gold nanoparticle-modified ITO (ITO/GNP). Upon the invasion of target strand, the double-stranded RNA transformed rapidly to an upright structure resulting in a notable decrease in SERS and redox signals of the MB...
March 24, 2018: Journal of Biotechnology
https://www.readbyqxmd.com/read/29575671/rituximab-may-cause-increased-hepatitis-c-virus-viremia-in-rheumatoid-arthritis-patients-through-declining-exosomal-microrna-155
#13
Tsai-Ling Liao, Shie-Liang Hsieh, Yi-Ming Chen, Hsin-Hua Chen, Hung-Jen Liu, Hsiu-Chin Lee, Der-Yuan Chen
OBJECTIVE: Several studies observed that rituximab (RTX) may enhance hepatitis C virus (HCV) viral activity. MicroRNAs (miRNAs) have been implicated in modulating host immune response in HCV infection and then shuttled by the exosomes to exert biological functions. But the role of exosomal miRNAs in RTX-related HCV activity enhancement remains unclear. METHODS: The association between RTX and increased HCV activity was examined using an in vitro cell-based assay...
March 25, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29565484/effects-of-mir-155-on-proliferation-and-apoptosis-by-regulating-foxo3a-bim-in-liver-cancer-cell-line-hcclm3
#14
W-W Liao, C Zhang, F-R Liu, W-J Wang
OBJECTIVE: MiR-155 has been shown to be up-regulated in hepatocellular carcinoma (HCC) patients. B-cell lymphoma-2 (Bcl-2) interacting mediator of cell death (BIM) regulates cell proliferation and apoptosis, as its down-regulation is involved in HCC onset. Transcriptional factor FoxO3a mediates BIM expression and is related to HCC pathogenesis. Bioinformatics analysis showed targeted regulation of FoxO3a by miR-155. This study aims to investigate whether miR-155 plays a role in mediating FoxO3a/BIM signal pathway and HCC occurrence...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29556299/microrna-155-acts-as-a-tumor-suppressor-in-colorectal-cancer-by-targeting-cthrc1-in-vitro
#15
Jingtian Liu, Zongyou Chen, Jianbin Xiang, Xiaodong Gu
Colorectal cancer is one of the most common malignancies. Aberrant expressed microRNAs (miRNAs) have been demonstrated to have strong associations with colorectal cancer by repressing their targets. Therefore, miRNAs are thought to have significant promise in the diagnosis and prognosis of colorectal cancer. Previous studies indicated that miR-155 and collagen triple helix repeat containing 1 (CTHRC1) were both involved in pathogenesis of colorectal cancer, but the underlying mechanisms of miR-155 and CTHRC1 are still unknown...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29552117/microrna-155-increases-colon-cancer-chemoresistance-to-cisplatin-by-targeting-forkhead-box-o3
#16
Yuewen Gao, Zhaoyan Liu, Zhaohong Ding, Shicai Hou, Jun Li, Kehua Jiang
To investigate the effect of microRNA (miR)-155 on colon cancer chemoresistance to cisplatine and its mechanism. Reverse transcription quantitative polymerase chain reaction was used to measure the levels of miR-155 and forkhead box O3 (FOXO3) in colon cancer specimens and cell lines. Overexpression of miR-155 and miR-155 inhibitor were transfected into colon cancer cell lines to investigate its role of chemoresistance to cisplatin in colon cancer. MTS assays were used to analyse cell viability in vitro . In vivo tumor formation assays were performed in C57BL/6 wild type and miR-155 knockout mice (miR-155-/-)...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29535520/targeted-delivery-of-anti-mir-155-by-functionalized-mesoporous-silica-nanoparticles-for-colorectal-cancer-therapy
#17
Yang Li, Yanhong Duo, Jiangang Bi, Xiaowei Zeng, Lin Mei, Shiyun Bao, Lisheng He, Aijun Shan, Yue Zhang, Xiaofang Yu
Introduction: MicroRNA-155 (miR-155) is an oncogenic microRNA, which is upregulated in many human cancers including colorectal cancer (CRC). Overexpression of miR-155 has been found to regulate several cancer-related pathways, and therefore, targeting miR-155 may be an effective strategy for cancer therapy. However, effective and safe delivery of anti-miR-155 to tumors remains challenging for the clinical applications of anti-miR-155-based therapeutics. Methods: In this study, we explored the expression of miR-155 and the transcription factor nuclear factor kappa B (NF-κB) in CRC tissues and cell lines, and the possible relationship between miR-155 and NF-κB...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29528577/serum-microrna-122-and-microrna-155-markers-of-disease-progression-in-hepatitis-c-viral-infection
#18
Abeer Sheneef, Asmaa M Gouda, Asmaa N Mohammad, Laila M Yousef, Amal K Noureldin
Chronic HCV with its longstanding complications of cirrhosis and HCC is a highly prevalent and challenging problem in Egypt. Recently, microRNAs are ranked as potential biomarkers for early diagnosis of HCV related complications. The aim of the present study was to evaluate the role of miRNA-122 and miRNA-155 for prediction of progression of HCV infection and for diagnosis of HCC. A total of 92 chronic HCV patients [chronic HCV (group 1, n =32); chronic HCV with cirrhosis (group 2, n=31); chronic HCV with HCC (group 3, n=29)] were enrolled into the study...
June 2017: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/29527004/microrna-155-positively-regulates-glucose-metabolism-via-pik3r1-foxo3a-cmyc-axis-in-breast-cancer
#19
Sinae Kim, Eunji Lee, Jaeyun Jung, Jong Won Lee, Hee Jung Kim, Jisun Kim, Hyun Ju Yoo, Hee Jin Lee, Sun Young Chae, Sang Min Jeon, Byung Ho Son, Gyungyup Gong, Shyam K Sharan, Suhwan Chang
MicroRNA is an endogenous, small RNA controlling multiple target genes and playing roles in various biological processes including tumorigenesis. Here, we addressed the function of miR-155 using LC-MS/MS-based metabolic profiling of miR-155 deficient breast cancer cells. Our results revealed the loss of miR-155 hampers glucose uptake and glycolysis, via the down-regulation of glucose transporters and metabolic enzymes including HK2, PKM2, and LDHA. We showed this is due to the down-regulation of cMYC, controlled through phosphoinositide-3-kinase regulatory subunit alpha (PIK3R1)-PDK1/AKT-FOXO3a pathway...
March 12, 2018: Oncogene
https://www.readbyqxmd.com/read/29517812/microrna-146a-and-microrna-155-as-novel-crevicular-fluid-biomarkers-for-periodontitis-in-non-diabetic-and-type-2-diabetic-patients
#20
Nikola Radović, Nataša Nikolić Jakoba, Nina Petrović, Aleksandra Milosavljević, Božidar Brković, Jelena Roganović
AIM: Recent studies point at the crucial role of epigenetic mechanisms in the development of multifactorial diseases such as periodontitis and diabetes mellitus (DM) type 2. In addition, circulatory microRNAs (miRs) have emerged as novel biomarkers for various diseases. Aim of this study was to investigate the levels of miR-146a and miR-155 and superoxide dismutase (SOD) activity in gingival crevicular fluid (GCF) of periodontitis patients with (CPDM) and without (CP) DM type 2 as well as in periodontally healthy, control groups (PHDM and PH, respectively)...
March 8, 2018: Journal of Clinical Periodontology
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