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https://www.readbyqxmd.com/read/28092351/pulmonary-complications-post-hematopoietic-stem-cell-transplant-in-dyskeratosis-congenita-analysis-of-oxidative-stress-in-lung-fibroblasts
#1
C Sorge, L Pereboeva, E Westin, W T Harris, D R Kelly, F Goldman
No abstract text is available yet for this article.
January 16, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28090290/shared-gene-expression-patterns-in-mesenchymal-progenitors-derived-from-lung-and-epidermis-in-pulmonary-arterial-hypertension-identifying-key-pathways-in-pulmonary-vascular-disease
#2
Christa Gaskill, Shennea Marriott, Sidd Pratap, Swapna Menon, Lora K Hedges, Joshua P Fessel, Jonathan A Kropski, DeWayne Ames, Lisa Wheeler, James E Loyd, Anna R Hemnes, Dennis R Roop, Dwight J Klemm, Eric D Austin, Susan M Majka
Rapid access to lung-derived cells from stable subjects is a major challenge in the pulmonary hypertension field, given the relative contraindication of lung biopsy. In these studies, we sought to demonstrate the importance of evaluating a cell type that actively participates in disease processes, as well as the potential to translate these findings to vascular beds in other nonlung tissues, in this instance perivascular skin mesenchymal cells (MCs). We utilized posttransplant or autopsy lung explant-derived cells (ABCG2-expressing mesenchymal progenitor cells [MPCs], fibroblasts) and skin-derived MCs to test the hypothesis that perivascular ABCG2 MPCs derived from pulmonary arterial hypertension (PAH) patient lung and skin would express a gene profile reflective of ongoing vascular dysfunction...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28088809/fibroblast-growth-factor-receptor-1-fgfr1-partly-related-to-vascular-endothelial-growth-factor-receptor-2-vegfr2-and-microvessel-density-is-an-independent-prognostic-factor-for-non-small-cell-lung-cancer
#3
Dan Pu, Jiewei Liu, Zhixi Li, Jiang Zhu, Mei Hou
BACKGROUND This study aimed to explore the correlation between FGFR1 and clinical features, including survival analysis and the promotion of angiogenesis by fibroblast growth factor receptor 1 (FGFR1) and vascular endothelial growth factor receptor 2 (VEGFR2). FGFR1 gene amplification has been found in non-small cell lung cancer (NSCLC). However, the prognostic value of FGFR1 and the correlation between FGFR1 and clinical features are still controversial. MATERIAL AND METHODS A total of 92 patients with NSCLC who underwent R0 resection between July 2006 and July 2008 were enrolled in the study...
January 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28087752/deficient-retinoid-driven-angiogenesis-may-contribute-to-failure-of-adult-human-lung-regeneration-in-emphysema
#4
John-Poul Ng-Blichfeldt, Joana Alçada, M Angeles Montero, Charlotte H Dean, Uta Griesenbach, Mark J Griffiths, Matthew Hind
BACKGROUND: Molecular pathways that regulate alveolar development and adult repair represent potential therapeutic targets for emphysema. Signalling via retinoic acid (RA), derived from vitamin A, is required for mammalian alveologenesis, and exogenous RA can induce alveolar regeneration in rodents. Little is known about RA signalling in the human lung and its potential role in lung disease. OBJECTIVES: To examine regulation of human alveolar epithelial and endothelial repair by RA, and characterise RA signalling in human emphysema...
January 13, 2017: Thorax
https://www.readbyqxmd.com/read/28078713/the-novel-mtor-complex-1-2-inhibitor-p529-inhibits-human-lung-myofibroblast-differentiation
#5
Keith T Ferguson, Elizabeth E Torr, Ksenija Bernau, Jonathan Leet, Davis Sherris, Nathan Sandbo
Idiopathic pulmonary fibrosis is a progressive and deadly disorder with very few therapeutic options. Palomid 529 (8-(1-hydroxyethyl)-2-methoxy-3-(4-methoxybenzyloxy)-benzo[c]chromen-6-one; P529) is a novel dual inhibitor of mechanistic target of rapamycin complex 1/2 (mTORC1/2). In these studies, we investigated the effect of P529 on TGF-β-dependent signaling and myofibroblast differentiation. TGF-β-induced phosphorylation of the mTORC1 targets, p70 S6 kinase 1 (S6K1) and eukaryotic translation initiation factor 4E binding protein 1 (4E-BP1), were both dose dependently inhibited by P529 in human lung fibroblasts with maximal inhibition occurring between 10-20 µM...
January 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28077642/studies-on-the-interaction-of-tumor-derived-hd5-alpha-defensins-with-adenoviruses-and-implications-for-oncolytic-adenovirus-therapy
#6
Charles Vragniau, Jens-Martin Hübner, Peter Beidler, Sucheol Gil, Kamola Saydaminova, Zhuo-Zhuang Lu, Roma Yumul, Hongjie Wang, Maximilian Richter, Pavel Sova, Charles Drescher, Pascal Fender, André Lieber
: Defensins are small anti-microbial peptides capable of neutralizing human adenovirus (HAdV) in vitro by binding capsid proteins and blocking endosomal escape of virus. In humans, the alpha defensin HD5 is produced by specialized epithelial cells of the gastro-intestinal and genito-urinary tracts. Here we demonstrate that HD5 is also expressed as an active, secreted peptide by epithelial ovarian and lung cancer cells in situ, in patient biopsies. This finding triggered us to study the role of HD5 in infection and spread of replication-competent, oncolytic HAdV type 3 virus...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28077599/blt1-mediates-bleomycin-induced-lung-fibrosis-independently-of-neutrophils-and-cd4-t-cells
#7
Jiaoyan Lv, Yingluo Xiong, Wenjing Li, Wei Yang, Lina Zhao, Rui He
Leukotriene B4 (LTB4) and its functional receptor BLT1 are closely involved in tissue inflammation by primarily mediating leukocyte recruitment and activation. Elevated LTB4 was reported in patients with lung fibrosis; however, the role of the LTB4/BLT1 axis in lung fibrosis remains unknown. In this study, we demonstrated that BLT1(-/-) mice exhibited significantly attenuated bleomycin (BLM)-induced lung fibrosis. Interestingly, BLT1 blockade with its specific antagonist U75302 in the acute injury phase (days 0-10 after BLM treatment) significantly attenuated lung fibrosis, which was accompanied by significant decreases in early infiltrating neutrophils and later infiltrating CD4(+) T cells and the production of TGF-β, IL-13, and IL-17A...
January 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28077237/interplay-of-extracellular-matrix-and-leukocytes-in-lung-inflammation
#8
REVIEW
Thomas N Wight, Charles W Frevert, Jason S Debley, Stephen R Reeves, William C Parks, Steven F Ziegler
During inflammation, leukocytes influx into lung compartments and interact with extracellular matrix (ECM). Two ECM components, versican and hyaluronan, increase in a range of lung diseases. The interaction of leukocytes with these ECM components controls leukocyte retention and accumulation, proliferation, migration, differentiation, and activation as part of the inflammatory phase of lung disease. In addition, bronchial epithelial cells from asthmatic children co-cultured with human lung fibroblasts generate an ECM that is adherent for monocytes/macrophages...
December 23, 2016: Cellular Immunology
https://www.readbyqxmd.com/read/28074012/reduced-abundance-of-the-e3-ubiquitin-ligase-e6ap-contributes-to-decreased-expression-of-the-ink4-arf-locus-in-non-small-cell-lung-cancer
#9
Cristina Gamell, Twishi Gulati, Yaara Levav-Cohen, Richard J Young, Hongdo Do, Pat Pilling, Elena Takano, Neil Watkins, Stephen B Fox, Prudence Russell, Doron Ginsberg, Brendon J Monahan, Gavin Wright, Alex Dobrovic, Sue Haupt, Ben Solomon, Ygal Haupt
The tumor suppressor p16(INK4a), one protein encoded by the INK4/ARF locus, is frequently absent in multiple cancers, including non-small cell lung cancer (NSCLC). Whereas increased methylation of the encoding gene (CDKN2A) accounts for its loss in a third of patients, no molecular explanation exists for the remainder. We unraveled an alternative mechanism for the silencing of the INK4/ARF locus involving the E3 ubiquitin ligase and transcriptional cofactor E6AP (also known as UBE3A). We found that the expression of three tumor suppressor genes encoded in the INK4/ARF locus (p15(INK4b), p16(INK4a), and p19(ARF)) was decreased in E6AP(-/-) mouse embryo fibroblasts...
January 10, 2017: Science Signaling
https://www.readbyqxmd.com/read/28073835/mechanosensitive-transient-receptor-potential-vanilloid-4-regulates-dermatophagoides-farinae-induced-airway-remodeling-via-2-distinct-pathways-modulating-matrix-synthesis-and-degradation
#10
Farai Gombedza, Vinay Kondeti, Nosayba Al-Azzam, Stephanie Koppes, Ernest Duah, Prachi Patil, Madison Hexter, Daniel Phillips, Charles K Thodeti, Sailaja Paruchuri
Contributions of mechanical signals to airway remodeling during asthma are poorly understood. Transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel, has been implicated in cardiac and pulmonary fibrosis; however, its role in asthma remains elusive. Employing a Dermatophagoides farinae-induced asthma model, we report here that TRPV4 knockout mice were protected from D. farinae-induced airway remodeling. Furthermore, lung fibroblasts that were isolated from TRPV4 knockout mice showed diminished differentiation potential compared with wild-type mice...
January 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28072477/recurrent-nab2-stat6-gene-fusions-and-estrogen-receptor-alpha-expression-in-pulmonary-adenofibromas
#11
Nicola Fusco, Elena Guerini-Rocco, Claudia Augello, Andrea Terrasi, Giulia Ercoli, Caterina Fumagalli, Davide Vacirca, Paola Braidotti, Antonina Parafioriti, Marta Jaconi, Letterio Runza, Vijayalakshmi Ananthanarayanan, Fabio Pagni, Silvano Bosari, Massimo Barberis, Stefano Ferrero
AIMS: Pulmonary adenofibromas are rare benign fibroepithelial tumours of the lung with unknown histogenesis and an indolent clinical behaviour. Their stroma resembles that of solitary fibrous tumours, while the glands are composed of respiratory epithelium organized in a phyllodes-like architecture. Differentiation of pulmonary adenofibromas from other more aggressive intrathoracic tumours is clinically relevant. However, their biology is unknown. Here, we sought to characterize pulmonary adenofibromas at a clinicopathologic level and to define whether they could be underpinned by a highly recurrent somatic genetic alteration akin to tumours with similar morphology...
January 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28072461/adverse-and-beneficial-effects-in-chinese-hamster-lung-fibroblast-cells-following-radiofrequency-exposure
#12
Anna Sannino, Olga Zeni, Stefania Romeo, Rita Massa, Maria Rosaria Scarfi
In this study, the effect of radiofrequency (RF) exposure to 1950 MHz, Universal Mobile Telecommunication System signal, was investigated in Chinese hamster lung fibroblast cell line (V79). Genotoxic and cytotoxic effects of 20-h exposure at specific absorption rate (SAR) values from 0.15 W/kg to 1.25 W/kg were measured by means of cytokinesis-block micronucleus (MN) assay. Exposure was carried out blinded under strictly controlled conditions of dosimetry and temperature. The effect of RF exposure alone at four SAR values was tested, that is, 0...
January 10, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28069875/15%C3%A2-methoxypuupehenol-induces-antitumor-effects-in-vitro-and-in-vivo-against-human-glioblastoma-and-breast-cancer-models
#13
Tyvette Hilliard, Gabriella Miklossy, Christopher Chock, Peibin Yue, Philip Williams, James Turkson
Studies with 15∝-methoxypuupehenol (15∝-MP), obtained from the extracts of Hyrtios sp., identified putative targets that are associated with its antitumor effects against human glioblastoma (GBM) and breast cancer. In the human GBM (U251MG) or breast cancer (MDA-MB-231) cells, treatment with 15∝-MP repressed pY705Stat3 (Signal Transducer and Activator of Transcription 3), pErk1/2 (extracellular signal-regulated kinase), pS147CyclinB1, pY507Alk (Anaplastic lymphoma kinase), and pY478ezrin levels, and induced pS10merlin, without inhibiting pJAK2 (Janus kinase) or pAkt induction...
January 9, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28069023/in-vitro-biological-responses-to-nanofibrillated-cellulose-by-human-dermal-lung-and-immune-cells-surface-chemistry-aspect
#14
Viviana R Lopes, Carla Sanchez-Martinez, Maria Strømme, Natalia Ferraz
BACKGROUND: Nanocellulose, and particularly nanofibrillated cellulose (NFC), has been proposed for a diversity of applications in industry and in the biomedical field. Its unique physicochemical and structural features distinguish nanocellulose from traditional materials and enable its use as an advance nanomaterial. However, its nanoscale features may induce unknown biological responses. Limited studies with NFC are available and the biological impacts of its use have not been thoroughly explored...
January 10, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28062913/understanding-the-developmental-pathways-pulmonary-fibroblasts-may-follow-during-alveolar-regeneration
#15
REVIEW
Stephen McGowan
Although pulmonary alveolar interstitial fibroblasts are less specialized than their epithelial and endothelial neighbors, they play essential roles during development and in response to lung injury. At birth, they must adapt to the sudden mechanical changes imposed by the onset of respiration and to a higher ambient oxygen concentration. In diseases such as bronchopulmonary dysplasia and interstitial fibrosis, their adaptive responses are overwhelmed leading to compromised gas-exchange function. Thus, although fibroblasts do not directly participate in gas-exchange, they are essential for creating and maintaining an optimal environment at the alveolar epithelial-endothelial interface...
January 6, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28060543/inhibition-of-the-kca3-1-channel-alleviates-established-pulmonary-fibrosis-in-a-large-animal-model
#16
Louise Organ, Barbara Bacci, Emmanuel Koumoundouros, Wayne G Kimpton, Chrishan S Samuel, Cameron J Nowell, Peter Bradding, Katy M Roach, Glen Westall, Jade Jaffar, Ken J Snibson
Idiopathic pulmonary fibrosis is a chronic progressive disease of increasing prevalence marked by poor prognosis and limited treatment options. Ca2+-activated KCa3.1 potassium channels have been shown to play a key role in the aberrant activation and responses to injury in both epithelial cells and fibroblasts, both considered key drivers in the fibrotic process of IPF. Pharmacological inhibition of IPF-derived fibroblasts is able to somewhat prevent TGF-βand bFGF-dependent profibrotic responses. In the current study, we investigated whether blockade of the KCa3...
January 6, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28057004/gene-profile-of-fibroblasts-identify-relation-of-ccl8-with-idiopathic-pulmonary-fibrosis
#17
Jong-Uk Lee, Hyun Sub Cheong, Eun-Young Shim, Da-Jeong Bae, Hun Soo Chang, Soo-Taek Uh, Young Hoon Kim, Jong-Sook Park, Bora Lee, Hyoung Doo Shin, Choon-Sik Park
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is characterized by the complex interaction of cells involved in chronic inflammation and fibrosis. Global gene expression of a homogenous cell population will identify novel candidate genes. METHODS: Gene expression of fibroblasts derived from lung tissues (8 IPF and 4 controls) was profiled, and ontology and functional pathway were analyzed in the genes exhibiting >2 absolute fold changes with p-values < 0...
January 5, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28053960/protective-effect-of-an-isoflavone-tectorigenin-against-oxidative-stress-induced-cell-death-via-catalase-activation
#18
Rui Zhang, Mei Jing Piao, Min Chang Oh, Jeong Eon Park, Kristina Shilnikova, Yu Jin Moon, Dong Hyun Kim, Uhee Jung, In Gyu Kim, Jin Won Hyun
BACKGROUND: Isoflavones are biologically active compounds that occur naturally in a variety of plants, with relatively high levels in soybean. Tectorigenin, an isoflavone, protects against hydrogen peroxide (H2O2)-induced cell damage. However, the underlying mechanism is unknown. METHODS: The MTT assay was performed to determine cell viability. Catalase activity was assessed by determining the amount of enzyme required to degrade 1 μM H2O2. Protein expression of catalase, phospho-extracellular signal-regulated kinase (ERK), IκB-α, and NF-κB were evaluated by Western blot analysis...
December 2016: Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28052041/non-malignant-respiratory-epithelial-cells-preferentially-proliferate-from-resected-non-small-cell-lung-cancer-specimens-cultured-under-conditionally-reprogrammed-conditions
#19
Boning Gao, Chunxian Huang, Kemp Kernstine, Vasiliki Pelekanou, Yuval Kluger, Tingting Jiang, Jennifer R Peters-Hall, Melissa Coquelin, Luc Girard, Wei Zhang, Kenneth Huffman, Dwight Oliver, Fumi Kinose, Eric Haura, Jamie K Teer, Uwe Rix, Anh T Le, Dara L Aisner, Marileila Varella-Garcia, Robert C Doebele, Kyle R Covington, Oliver A Hampton, Harsha V Doddapaneni, Joy C Jayaseelan, Jianhong Hu, David A Wheeler, Jerry W Shay, David L Rimm, Adi Gazdar, John D Minna
The "conditionally reprogrammed cells" (CRC) method, using a Rho kinase inhibitor and irradiated mouse fibroblast cells has been described for the efficient growth of cells from malignant and non-malignant samples from primary tumor and non-malignant sites. Using the CRC method, four institutions independently cultured tumor tissues from 48 non-small cell lung cancers (NSCLC, mostly from primary resected tumors) and 22 non-malignant lungs. We found that epithelial cells could be cultured from tumor and non-malignant lung...
December 29, 2016: Oncotarget
https://www.readbyqxmd.com/read/28049732/nadph-oxidase-4-nox4-suppresses-mitochondrial-biogenesis-and-bioenergetics-in-lung-fibroblasts-via-a-nuclear-factor-erythroid-derived-2-like-2-nrf2-dependent-pathway
#20
Karen Bernard, Naomi J Logsdon, Veronica Miguel, Gloria A Benavides, Jianhua Zhang, A Brent Carter, Victor M Darley-Usmar, Victor J Thannickal
Mitochondrial bioenergetics are critical for cellular homeostasis and stress responses. The reactive oxygen species (ROS)-generating enzyme, NADPH oxidase 4 (Nox4), regulates a number of physiological and pathological processes, including cellular differentiation, host defense and tissue fibrosis. In this study, we explored the role of constitutive Nox4 activity in regulating mitochondrial function. An increase in mitochondrial oxygen consumption and reserve capacity was observed in murine and human lung fibroblasts with genetic deficiency (or silencing) of Nox4...
January 3, 2017: Journal of Biological Chemistry
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