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https://www.readbyqxmd.com/read/29351724/the-role-of-extracellular-matrix-components-in-angiogenesis-and-fibrosis-possible-implication-for-systemic-sclerosis
#1
Vasiliki Liakouli, Paola Cipriani, Paola Di Benedetto, Piero Ruscitti, Francesco Carubbi, Onorina Berardicurti, Noemi Panzera, Roberto Giacomelli
Extracellular matrix (ECM) plays a crucial role in the regulation of both physiological and pathological angiogenesis. ECM homeostasis and function is ensuring by the tightly regulation of the different ECM components including, collagens, proteoglycans and a variety of different glycoproteins. An altered expression of the above ECM molecules as well as an imbalance between the action of matrix remodeling enzymes and their tissue inhibitors is known to be responsible for impaired angiogenesis and fibrosis. Systemic Sclerosis (SSc) is an autoimmune disease characterized by micro-angiopathy, failure of reparative angiogenesis and excessive fibrosis of the skin and various internal organs, dues to an increased production of ECM...
January 19, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/29351283/decreased-mir-17-in-glioma-cells-increased-cell-viability-and-migration-by-increasing-the-expression-of-cyclin-d1-p-akt-and-akt
#2
Guangwei Sun, Guozhong SiMa, Chunhui Wu, Yongzhong Fan, Yong Tan, Zhong Wang, Gang Cheng, Jie Li
BACKGROUND: The activating mutations of micro RNA (miR)-17 have been revealed in tumors such as human non-Hodgkin's lymphoma and T cell leukemia. However, it is unclear about the role of miR-17 in glioma cells. The current study aimed to investigate effects of miR-17 mimics or inhibitor on the viability and migration of rat glioma C6 cells, and explore possible mechanisms. METHODS: The expression of miR-17 in rat glioma C6 cells and normal brain tissue was detected by quantitative PCR...
2018: PloS One
https://www.readbyqxmd.com/read/29351231/molecular-network-based-identification-of-competing-endogenous-rnas-in-thyroid-carcinoma
#3
Minjia Lu, Xingyu Xu, Baohang Xi, Qi Dai, Chenli Li, Li Su, Xiaonan Zhou, Min Tang, Yuhua Yao, Jialiang Yang
RNAs may act as competing endogenous RNAs (ceRNAs), a critical mechanism in determining gene expression regulations in many cancers. However, the roles of ceRNAs in thyroid carcinoma remains elusive. In this study, we have developed a novel pipeline called Molecular Network-based Identification of ceRNA (MNIceRNA) to identify ceRNAs in thyroid carcinoma. MNIceRNA first constructs micro RNA (miRNA)-messenger RNA (mRNA)long non-coding RNA (lncRNA) networks from miRcode database and weighted correlation network analysis (WGCNA), based on which to identify key drivers of differentially expressed RNAs between normal and tumor samples...
January 19, 2018: Genes
https://www.readbyqxmd.com/read/29350326/oxyresveratrol-prevents-murine-h22-hepatocellular-carcinoma-growth-and-lymph-node-metastasis-via-inhibiting-tumor-angiogenesis-and-lymphangiogenesis
#4
Yuanqi Liu, Wei Ren, Yang Bai, Lihong Wan, Xiaodong Sun, Yin Liu, Wenbi Xiong, Yuan-Yuan Zhang, Liming Zhou
The purpose of this study was to investigate the effects and mechanisms of oxyresveratrol (Oxyres) on hepatocellular carcinoma (HCC) in vitro and in vivo. The MTT and Transwell assays were performed to investigate the effects of Oxyres on cell proliferation and migration of two HCC cell lines, QGY-7701 and SMMC-7721 cells. H22 cells were subcutaneously injected into hind foot pads of 70 male mice to establish a lymph node metastasis model. These mice were randomly divided into seven groups as follows, control group, HCC group, Oxyres 20 mg/kg group, Oxyres 40 mg/kg group, Oxyres 60 mg/kg group, Resveratrol (Res) group, and Adriamycin (ADM) group...
January 19, 2018: Journal of Natural Medicines
https://www.readbyqxmd.com/read/29348621/dynamic-cellular-maps-of-molecular-species-application-to-drug-target-interactions
#5
Carolina García, Alejandro Losada, Miguel A Sacristán, Juan Fernando Martínez-Leal, Carlos M Galmarini, M Pilar Lillo
The design of living cell studies aimed at deciphering the mechanism of action of drugs targeting proteins with multiple functions, expressed in a wide range of concentrations and cellular locations, is a real challenge. We recently showed that the antitumor drug plitidepsin (APL) localizes sufficiently close to the elongation factor eEF1A2 so as to suggest the formation of drug-protein complexes in living cells. Here we present an extension of our previous micro-spectroscopy study, that combines Generalized Polarization (GP) images, with the phasor approach and fluorescence lifetime imaging microscopy (FLIM), using a 7-aminocoumarin drug analog (APL*) as fluorescence tracer...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29347851/the-era-of-biofunctional-biomaterials-in-orthopedics-what-does-the-future-hold
#6
Mubashar Rehman, Asadullah Madni, Thomas J Webster
Titanium-based materials do not fulfill all the requirements of orthopedic implants due to a mismatch in mechanical properties with bone which are prone to change during the course of bone growth. Biofunctional biomaterials are a new class of materials that show bioactivity and adaptability at any stage of bone growth. Areas covered: Different biofunctional biomaterials have evolved over time that can enhance calcium phosphate (CaP) precipitation, stimulate osteogenic differentiation, and can control osteoblast gene expression...
January 18, 2018: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/29346396/serum-mirna-levels-are-related-to-glucose-homeostasis-and-islet-autoantibodies-in-children-with-high-risk-for-type-1-diabetes
#7
Linda Åkerman, Rosaura Casas, Johnny Ludvigsson, Beatriz Tavira, Camilla Skoglund
Micro RNAs (miRNAs) are promising disease biomarkers due to their high stability. Their expression in serum is altered in type 1 diabetes, but whether deviations exist in individuals with high risk for type 1 diabetes remains unexplored. We therefore assessed serum miRNAs in high-risk individuals (n = 21) positive for multiple islet autoantibodies, age-matched healthy children (n = 17) and recent-onset type 1 diabetes patients (n = 8), using Serum/Plasma Focus microRNA PCR Panels from Exiqon. The miRNA levels in the high-risk group were similar to healthy controls, and no specific miRNA profile was identified for the high-risk group...
2018: PloS One
https://www.readbyqxmd.com/read/29344872/a-laser-microdissection-liquid-chromatography-tandem-mass-spectrometry-workflow-for-post-mortem-analysis-of-brain-tissue
#8
David C Hondius, Jeroen J M Hoozemans, Annemieke J M Rozemuller, Ka Wan Li, August B Smit
Improved speed and sensitivity of mass spectrometry allow the simultaneous quantification of high numbers of proteins from increasingly smaller quantities of tissue sample. Quantitative data of the proteome is highly valuable for providing unbiased information on, for example, protein expression changes related to disease or identifying related biomarkers. In brain diseases the affected area can be small and pathogenic events can be related to a specific cell type in an otherwise heterogeneous tissue type. An emerging approach dedicated to analyzing this type of samples is laser micro-dissection (LMD) combined with LC-MS/MS into a single workflow...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344744/interleukin-1-receptor-antagonist-inhibits-angiogenesis-in-gastric-cancer
#9
Zhenqiang Gong, Jiachi Ma, He Su, Tiankang Guo, Hui Cai, Quan Chen, Xiaodan Zhao, Jianbo Qi, Jianbo Du
BACKGROUND: Interleukin-1 alpha (IL-1α) plays an important role in tumorigenesis and angiogenesis of gastric cancer. The interleukin-1 receptor antagonist (IL-1RA) inhibits IL-1 selectively and specifically through IL-1R type I (IL-1RI). However, the underlying mechanism by which IL-1RA modulates the interactions of tumor cells and their micro-environment is poorly understood. We have evaluated the role of IL-1RA in the metastatic process as well as the mutual or reciprocal actions between gastric cancer cells and stromal cells...
January 17, 2018: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29344312/an-endogenous-vaccine-based-on-fluorophores-and-multivalent-immunoadjuvants-regulates-tumor-micro-environment-for-synergistic-photothermal-and-immunotherapy
#10
Ling Li, Suleixin Yang, Linjiang Song, Yan Zeng, Tao He, Ning Wang, Chuan Yu, Tao Yin, Li Liu, Xiawei Wei, Qinjie Wu, Yuquan Wei, Li Yang, Changyang Gong
Recently, near-infrared (NIR) light-based photothermal therapy (PTT) has been widely applied in cancer treatment. However, in most cases, the tissue penetration depth of NIR light is not sufficient and thus photothermal therapy is unable to completely eradicate deep, seated tumors inevitably leading to recurrence of the tumor. Due to this significant limitation of NIR, improved therapeutic strategies are urgently needed. Methods: We developed an endogenous vaccine based on a novel nanoparticle platform for combinatorial photothermal ablation and immunotherapy...
2018: Theranostics
https://www.readbyqxmd.com/read/29343614/suppressor-of-cytokine-signaling-2-socs2-deletion-protects-bone-health-of-mice-with-dss-induced-inflammatory-bowel-disease
#11
Ross Dobie, Vicky E MacRae, Chloe Pass, Elspeth M Milne, S Faisal Ahmed, Colin Farquharson
Individuals with inflammatory bowel disease (IBD) often present with poor bone health. The development of targeted therapies for this bone loss requires a fuller understanding of the underlying cellular mechanisms. Although bone loss in IBD is multifactorial, the altered sensitivity and secretion of growth hormone (GH) and insulin-like growth factor-1 (IGF-1) in IBD is understood to be a critical contributing mechanism. The expression of suppressor of cytokine signaling 2 (SOCS2), a well-established negative regulator of GH signaling, is stimulated by proinflammatory cytokines...
January 17, 2018: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29343271/p66shc-gene-expression-in-peripheral-blood-mononuclear-cells-and-progression-of-diabetic-complications
#12
Gian Paolo Fadini, Mattia Albiero, Benedetta Maria Bonora, Nicol Poncina, Saula Vigili de Kreutzenberg, Angelo Avogaro
BACKGROUND: The risk of diabetic complications is modified by genetic and epigenetic factors. p66Shc drives the hyperglycaemic cell damage and its deletion prevents experimental diabetic complications. We herein tested whether p66Shc expression in peripheral blood mononuclear cells (PBMCs) predicts adverse outcomes in people with diabetes. METHODS: In a cohort of 100 patients with diabetes (16 type 1 and 84 type 2), we quantified baseline p66Shc expression in PBMCs by quantitative PCR...
January 17, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29339729/ecotropic-viral-integration-site-1-promotes-metastasis-independent-of-epithelial-mesenchymal-transition-in-colon-cancer-cells
#13
Kasturi Bala Nayak, I S Sajitha, T R Santhosh Kumar, Soumen Chakraborty
The most indecipherable component of solid cancer is the development of metastasis which accounts for more than 90% of cancer-related mortalities. A developmental program termed epithelial-mesenchymal transition (EMT) has also been shown to play a critical role in promoting metastasis in epithelium-derived solid tumors. By analyzing publicly available microarray datasets, we observed that ecotropic viral integration site 1 (EVI1) correlates negatively with SLUG, a master regulator of EMT. This correlation was found to be relevant as we demonstrated that EVI1 binds to SLUG promoter element directly through the distal set of zinc fingers and downregulates its expression...
January 16, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29339399/ovariectomy-induced-bone-loss-in-tnf%C3%AE-and-il6-knockout-mice-is-regulated-by-different-mechanisms
#14
Siyi Zhu, Hongchen He, Chengfei Gao, Guojing Luo, Ying Xie, Haiming Wang, Li Tian, Chen Xiang, Yu Xijie, Chengqi He
Female wild-type (WT), TNFα knockout (TNFα-/-) or IL6 knockout (IL6-/-) mice aged 12 weeks were sham-operated (SHAM) or subjected to OVX and euthanized after 4 weeks. Bone mass and skeletal microarchitecture were determined using micro-CT. Bone marrow stromal cells (BMSCs) from all three groups were induced to differentiate into osteoblasts or osteoclasts. Bone metabolism was assessed by histological analysis and qRT-PCR. OVX significantly increased the body weight only in WT mice and decreased the uterine weight in all three genotypes...
January 16, 2018: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29338562/targeted-microbubbles-with-ultrasound-irradiation-and-pd-1-inhibitor-to-increase-antitumor-activity-in-b-cell-lymphoma
#15
Shiya Zheng, Dan Song, Xiaoxiao Jin, Haijun Zhang, Mohanad Aldarouish, Yan Chen, Cailian Wang
AIM: Severe cardiac toxicity of doxorubicin and an immunosuppressive tumor micro-environment become main obstacles for the effective treatment of B-cell lymphoma. In this research, rituximab-conjugated and doxorubicin-loaded microbubbles (RDMs) were designed for exploring a combination approach of targeted microbubbles with ultrasound (US) irradiation and PD-1 inhibitor to overcome obstacles mentioned above. METHODS: In vivo studies were performed on SU-DHL-4 cell-grafted mice and ex vivo studies were performed on CD20+ human SU-DHL-4 cells and human T cells...
January 17, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29335199/3-d-mineralized-silk-fibroin-polycaprolactone-composite-scaffold-modified-with-polyglutamate-conjugated-with-bmp-2-peptide-for-bone-tissue-engineering
#16
Jingjing Luo, Haitao Zhang, Jiang Zhu, Xiaokang Cui, Junjiu Gao, Xin Wang, Jie Xiong
In the field of bone tissue engineering, an ideal three-dimensional (3-D) scaffold should not only structurally mimic the extracellular matrix (ECM) in large tissues but also mechanically support the bone healing process and provide biochemical cues to induce osteogenesis. In this study, we investigated the feasibility of functionalisation of scaffolds by coupling polyglutamate acid conjugated with BMP-2 peptide onto silk fibroin (SF)/polycaprolactone (PCL) (SF/PCL) blend nanofibers. The morphology, composition, and mineralisation, were confirmed by FE-SEM, XRD, and FT-IR spectroscopy...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29330810/correlation-of-glioma-proliferation-and-hypoxia-by-luciferase-magnetic-resonance-and-positron-emission-tomography-imaging
#17
Michael Karsy, David L Gillespie, Kevin P Horn, Lance D Burrell, Jeffery T Yap, Randy L Jensen
Gliomas are the most common type of primary, malignant brain tumor and significantly impact patients, who have a median survival of ~1 year depending on mutational background. Novel imaging modalities such as luciferase bioluminescence, micro-magnetic resonance imaging (micro-MRI), micro-computerized tomography (micro-CT), and micro-positron emission tomography (micro-PET) have expanded the portfolio of tools available to study this disease. Hypoxia, a key oncogenic driver of glioma and mechanism of resistance, can be studied in vivo by the concomitant use of noninvasive MRI and PET imaging...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29327244/antibody-based-delivery-of-tumor-necrosis-factor-l19-tnf%C3%AE-and-interleukin-2-l19-il2-to-tumor-associated-blood-vessels-has-potent-immunological-and-anticancer-activity-in-the-syngeneic-j558l-balb-c-myeloma-model
#18
Hans D Menssen, Ulf Harnack, Ulrike Erben, Dario Neri, Burkhard Hirsch, Horst Dürkop
PURPOSE: To analyze the impact of TNFα or IL2 on human lymphocytes in vitro and the anti-tumor and immune-modifying effects of L19-IL2 and L19-TNFα on subcutaneously growing J558L myeloma in immunocompetent mice. METHODS: PBMCs from three healthy volunteers were incubated with IL2, TNFα, or with IL2 plus addition of TNFα (final 20 h). BALB/c J558L mice with subcutaneous tumors were treated with intravenous L19-TNFα plus L19-IL2, or controls. Tumor growth and intra- and peri-tumoral tissues were analyzed for micro-vessel density, necrosis, immune cell composition, and PD1 or PD-L1 expressing cells...
January 11, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29325455/influence-of-middle-distance-running-on-muscular-micro-rnas
#19
Elisa Danese, Marco Benati, Fabian Sanchis-Gomar, Cantor Tarperi, Gian Luca Salvagno, Elisa Paviati, Martina Montagnana, Federico Schena, Giuseppe Lippi
A specific subset of micro RNAs (miRs), including miR-133 and miR-206, is specifically expressed in muscle tissue, so that they are currently defined as muscular miRs (myomiRs). To further elucidate the role of myomiRs in muscle biology, we measured miR-133a and miR-206 in plasma of 28 middle-age recreational athletes. The study population consisted of 28 middle aged, recreation athletes (11 women and 17 men; mean age, 46 years) who completed a 21.1 km, half-marathon. The plasma concentration of miR-133a and miR-206, the serum concentration of creatine kinase (CK) and high-sensitivity (HS) cardiac troponin T (cTnT), as well as capillary lactate, were measured before and immediately after the run...
January 11, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29325130/emergent-heterogeneous-micro-environments-in-biofilms-substratum-surface-heterogeneity-and-bacterial-adhesion-force-sensing
#20
Yijin Ren, Can Wang, Zhi Chen, Elaine Allan, Henny C van der Mei, Henk J Busscher
Phenotypically-heterogeneous micro-environments emerge as biofilms mature across different environments. Phenotypic-heterogeneity in biofilm sub-populations not obeying quorum sensing-dictated, collective group-behavior, may be considered as a strategy allowing non-conformists to survive hostile conditions. Heterogeneous phenotype development has been amply studied with respect to gene expression and genotypic changes, but 'biofilm genes' responsible for pre-programmed development of heterogeneous micro-environments in biofilms have never been discovered...
January 9, 2018: FEMS Microbiology Reviews
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