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https://www.readbyqxmd.com/read/28442300/effects-of-mmp12-on-cell-motility-and-inflammation-during-corneal-epithelial-repair
#1
Marie Wolf, Inna Maltseva, Selene M Clay, Peipei Pan, Abhinay Gajjala, Matilda F Chan
Corneal epithelial defects are a common cause of ocular morbidity and can result in corneal scarring if they do not heal properly. Matrix metalloproteinases (MMPs) are extracellular matrix proteinases that regulate multiple aspects of corneal repair. We have previously shown that MMP12 has a protective effect on corneal fibrosis through its regulation of neutrophil and macrophage infiltration and angiogenesis in a chemical injury model involving full thickness damage to the cornea. However, the role of MMP12 in injuries limited to the corneal epithelium is relatively unknown...
April 22, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28385529/matrix-metalloproteinase12-facilitated-platelet-activation-by-shedding-carcinoembryonic-antigen-related-cell-adhesion-molecule1
#2
Jing Wang, Yujia Ye, Guoqing Wei, Wei Hu, Linhua Li, Si Lu, Zhaohui Meng
Platelets express several MMPs that modulate their activation, which in turn regulates thrombosis, but the exact mechanism is unclear. This study evaluated the platelet expression of MMP12 and platelet activation by shedding CEACAM1 mediated by MMP12. Expression of MMP12 was measured by RT-PCR, Western blot (WB), and casein zymography in platelet from whole blood by gel filtration over plateletpheresis. The site of CEACAM1 cleavage by MMP12 was determined by high performance liquid chromatography (HPLC), mass spectrometry, WB and flow cytometry (FCM)...
May 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28345958/macrophage-elastase-induces-trail-mediated-tumor-cell-death-through-its-carboxyterminal-domain
#3
Nadine Dandachi, Neil J Kelly, John P Wood, Christine L Burton, Josiah E Radder, Adriana S Leme, Alyssa D Gregory, Steven D Shapiro
RATIONALE: Macrophage elastase (MMP12) is a potent protease that contributes to the lung destruction that accompanies cigarette smoking while it simultaneously inhibits lung tumor angiogenesis and metastasis by catalyzing the formation of anti-angiogenic peptides. Recent studies have revealed novel non-proteolytic functions of MMP12, including antimicrobial activity through a peptide within its C-terminal domain (CTD). OBJECTIVES: Our objective was to determine whether the MMP12 CTD contributes to its anti-tumor activity in lung cancer...
March 27, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28343758/synergistic-expression-of-histone-deacetylase-9-and-matrix-metalloproteinase-12-in-m4-macrophages-in-advanced-carotid-plaques
#4
N K J Oksala, I Seppälä, R Rahikainen, K-M Mäkelä, E Raitoharju, T Illig, N Klopp, I Kholova, R Laaksonen, P J Karhunen, V P Hytönen, T Lehtimäki
OBJECTIVE/BACKGROUND: Expression patterns and association with cell specific gene expression signatures of the epigenetic regulator histone deacetylase 9 (HDAC9) and matrix metalloproteinase 12 (MMP12) in human plaque are not known. METHODS: This was a prospective cohort study. Genome wide expression analysis was performed in carotid, femoral, aortic plaques (n = 68) and left internal thoracic (LITA) controls (n = 28) and plaque histological severity assessed...
March 23, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28320580/roles-of-alternatively-activated-m2-macrophages-in-allergic-contact-dermatitis
#5
REVIEW
Kotaro Suzuki, Kazuyuki Meguro, Daiki Nakagomi, Hiroshi Nakajima
Alternatively activated macrophages (M2 macrophages) play key roles in the suppression of Th1 cell responses and the orchestration of tissue repair. However, recent studies have shown that M2 macrophages have potentials to produce high levels of proinflammatory cytokines such as IL-1β, IL-6, and TNF-α, suggesting that M2 macrophages may exacerbate inflammation in some settings. In this regard, we have recently shown that large numbers of M2 macrophages accumulate in the sites of hapten-induced contact hypersensitivity (CHS), an animal model of allergic contact dermatitis, and that M2 macrophages exacerbate hapten-induced CHS by producing matrix metalloproteinase 12 (MMP12)...
March 17, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28288857/a-reductionist-approach-to-extract-robust-molecular-markers-from-microarray-data-series-isolating-markers-to-track-osseointegration
#6
Anwesha Barik, Satarupa Banerjee, Santanu Dhara, Nishant Chakravorty
Complexities in the full genome expression studies hinder the extraction of tracker genes to analyze the course of biological events. In this study, we demonstrate the applications of supervised machine learning methods to reduce the irrelevance in microarray data series and thereby extract robust molecular markers to track biological processes. The methodology has been illustrated by analyzing whole genome expression studies on bone-implant integration (ossointegration). Being a biological process, osseointegration is known to leave a trail of genetic footprint during the course...
March 10, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28281307/integrated-expression-analysis-identifies-transcription-networks-in-mouse-and-human-gastric-neoplasia
#7
Zheng Chen, Mohammed Soutto, Bushra Rahman, Muhammad W Fazili, DunFa Peng, Maria Blanca Piazuelo, Heidi Chen, M Kay Washington, Yu Shyr, Wael El-Rifai
Gastric cancer (GC) is a leading cause of cancer-related deaths worldwide. The Tff1 knockout (KO) mouse model develops gastric lesions that include low-grade dysplasia (LGD), high-grade dysplasia (HGD), and adenocarcinomas. In this study, we used Affymetrix microarrays gene expression platforms for analysis of molecular signatures in the mouse stomach [Tff1-KO (LGD) and Tff1 wild-type (normal)] and human gastric cancer tissues and their adjacent normal tissue samples. Combined integrated bioinformatics analysis of mouse and human datasets indicated that 172 genes were consistently deregulated in both human gastric cancer samples and Tff1-KO LGD lesions (P < ...
March 9, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28237967/heterozygous-vangl2-looptail-mice-reveal-novel-roles-for-the-planar-cell-polarity-pathway-in-adult-lung-homeostasis-and-repair
#8
Thanushiyan Poobalasingam, Laura L Yates, Simone A Walker, Miguel Pereira, Nina Y Gross, Akmol Ali, Maria Kolatsi-Joannou, Marjo-Riitta Jarvelin, Juha Pekkanen, Eugenia Papakrivopoulou, David A Long, Mark Griffiths, Darcy Wagner, Melanie Königshoff, Matthew Hind, Cosetta Minelli, Clare M Lloyd, Charlotte H Dean
Lung diseases impose a huge economic and health burden worldwide. A key aspect of several adult lung diseases, such as idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD), including emphysema, is aberrant tissue repair, which leads to an accumulation of damage and impaired respiratory function. Currently, there are few effective treatments available for these diseases and their incidence is rising. The planar cell polarity (PCP) pathway is critical for the embryonic development of many organs, including kidney and lung...
April 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28125591/maternal-pre-pregnancy-obesity-is-associated-with-altered-placental-transcriptome
#9
Signe Altmäe, Maria Teresa Segura, Francisco J Esteban, Sabine Bartel, Pilar Brandi, Martin Irmler, Johannes Beckers, Hans Demmelmair, Carmen López-Sabater, Berthold Koletzko, Susanne Krauss-Etschmann, Cristina Campoy
Maternal obesity has a major impact on pregnancy outcomes. There is growing evidence that maternal obesity has a negative influence on placental development and function, thereby adversely influencing offspring programming and health outcomes. However, the molecular mechanisms underlying these processes are poorly understood. We analysed ten term placenta's whole transcriptomes in obese (n = 5) and normal weight women (n = 5), using the Affymetrix microarray platform. Analyses of expression data were carried out using non-parametric methods...
2017: PloS One
https://www.readbyqxmd.com/read/28122331/integrative-mirna-and-mrna-analysis-in-penile-carcinomas-reveals-markers-and-pathways-with-potential-clinical-impact
#10
Hellen Kuasne, Mateus C Barros-Filho, Ariane Busso-Lopes, Fábio A Marchi, Maisa Pinheiro, Juan J M Muñoz, Cristovam Scapulatempo-Neto, Eliney F Faria, Gustavo C Guimarães, Ademar Lopes, José C S Trindade-Filho, Maria Aparecida C Domingues, Sandra A Drigo, Silvia R Rogatto
Penile carcinoma (PeCa) is an important public health issue in poor and developing countries, and has only recently been explored in terms of genetic and epigenetic studies. Integrative data analysis is a powerful method for the identification of molecular drivers involved in cancer development and progression. miRNA and mRNA expression profiles followed by integrative analysis were investigated in 23 PeCa and 12 non-neoplastic penile tissues (NPT). Expression levels of eight miRNAs and 10 mRNAs were evaluated in the same set of samples used for microarray and in a validation set of cases (PeCa = 36; NPT = 27)...
February 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28100167/conserved-gene-expression-in-sperm-reservoirs-between-birds-and-mammals-in-response-to-mating
#11
Mohammad Atikuzzaman, Manuel Alvarez-Rodriguez, Alejandro Vicente Carrillo, Martin Johnsson, Dominic Wright, Heriberto Rodriguez-Martinez
BACKGROUND: Spermatozoa are stored in the oviductal functional sperm reservoir in animals with internal fertilization, including zoologically distant classes such as pigs or poultry. They are held fertile in the reservoir for times ranging from a couple of days (in pigs), to several weeks (in chickens), before they are gradually released to fertilize the newly ovulated eggs. It is currently unknown whether females from these species share conserved mechanisms to tolerate such a lengthy presence of immunologically-foreign spermatozoa...
January 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28098914/role-of-mir-647-in-human-gastric-cancer-suppression
#12
Wenlong Cao, Weiyuan Wei, Zexu Zhan, Dongyi Xie, Yubo Xie, Qiang Xiao
MicroRNAs (miRNAs) regulate various oncogenes concomitantly, resulting in tumor suppression. They regulate proliferation and migration pathways in tumor development, suggesting a potential therapeutic role. In the present study, we found that miR-647 was markedly downregulated in gastric cancer (GC), and was significantly correlated with reduced tumor size and metastasis. In addition, miR-647 was also reduced in GC cell lines. Furthermore, overexpression of miR-647 in the GC cell lines inhibited cell proliferation, promoted cell cycle arrest at the G0/G1 phase and induced cell apoptosis...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/27989982/meta-analysis-of-microarray-based-expression-profiles-to-identify-differentially-expressed-genes-in-intracranial-aneurysms
#13
Zhe Xu, Hao Li, Jiangman Song, Bing Han, Zheng Wang, Yong Cao, Shuo Wang, Jizong Zhao
OBJECTIVE: To gain comprehensive insight into the molecular mechanism of formation and rupture of intracranial aneurysms (IAs). METHODS: All publicly accessible microarray-based whole-genome gene expression profiles on IAs were retrieved. The significance analysis of microarrays method was applied to identify differentially expressed genes (DEGs). Functional annotation was performed using gene ontology terms and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses...
January 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27987113/functional-single-nucleotide-polymorphisms-of-matrix-metalloproteinase-7-and-12-genes-in-idiopathic-recurrent-spontaneous-abortion
#14
Anita Barišić, Nina Pereza, Alenka Hodžić, Miljenko Kapović, Borut Peterlin, Saša Ostojić
PURPOSE: The aim of this study was to investigate the potential association of matrix metalloproteinase 7 (MMP7) -181 A/G and MMP12 -82 A/G functional single nucleotide polymorphisms (SNP) with idiopathic recurrent spontaneous abortion (IRSA) in Slovenian reproductive couples. METHODS: A case-control study was conducted on 149 couples with 3 or more consecutive idiopathic spontaneous pregnancy loses and 149 women and men with at least 2 live births and no history of pregnancy complications...
March 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27965156/fibrin-ogen-drives-repair-after-acetaminophen-induced-liver-injury-via-leukocyte-%C3%AE-m%C3%AE-2-integrin-dependent-upregulation-of-mmp12
#15
Anna K Kopec, Nikita Joshi, Holly Cline-Fedewa, Anna V Wojcicki, Jessica L Ray, Bradley P Sullivan, John E Froehlich, Brendan F Johnson, Matthew J Flick, James P Luyendyk
BACKGROUND & AIMS: Acetaminophen (APAP)-induced liver injury is coupled with activation of the blood coagulation cascade and fibrin(ogen) accumulation within APAP-injured livers of experimental mice. We sought to define the role of fibrin(ogen) deposition in APAP-induced liver injury and repair. METHODS: Wild-type, fibrinogen-deficient mice, mutant mice with fibrin(ogen) incapable of binding leukocyte αMβ2 integrin (Fibγ(390-396A) mice) and matrix metalloproteinase 12 (Mmp12)-deficient mice were fasted, injected with 300mg/kg APAP i...
April 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/27907201/tumor-necrosis-factor-like-weak-inducer-of-apoptosis-promotes-hepatic-stellate-cells-migration-via-canonical-nf-%C3%AE%C2%BAb-mmp9-pathway
#16
Mingcui Xu, Feng Zhang, Aixiu Wang, Chen Wang, Yu Cao, Ming Zhang, Mingming Zhang, Min Su, Xiaoping Zou, Guifang Xu, Yuzheng Zhuge
In the liver, the signal and function of tumor necrosis factor-like weak inducer of apoptosis (TWEAK) have mainly been assessed in association with liver regeneration. However, the effects of TWEAK on liver fibrosis have not been fully elucidated. To investigate the effects of TWEAK on human hepatic stellate cells (HSCs) and to explore the relevant potential mechanisms, human HSCs line-LX-2 were cultured with TWEAK. Cell migration was detected by transwell assay; cell viability was evaluated by Cell Counting Kit-8; the expression of MMP1, MMP2, MMP3, MMP7, MMP8, MMP9, MMP10, MMP11, MMP12, MMP13 gene was identified by quantitative real-time polymerase chain reaction and western blotting; the activity of matrix metalloproteinases (MMPs) was tested by enzyme-linked immuno sorbent assay; small interfering RNA transfection was applied for depletion of MMP9 and p65...
2016: PloS One
https://www.readbyqxmd.com/read/27862656/matrix-metalloproteinase-12-mmp-12-deficiency-attenuates-experimental-crescentic-anti-gbm-glomerulonephritis
#17
Abu P Abraham, Frank Y Ma, William R Mulley, David J Nikolic-Paterson, Greg H Tesch
AIM: MMP-12 (macrophage elastase) is an enzyme that can cleave various extracellular matrix proteins and is required for macrophage infiltration and pulmonary fibrosis in experimental emphysema. We have shown previously that MMP-12 is highly up-regulated in experimental anti-glomerular basement membrane (GBM) disease. The aim of this study was to determine whether MMP-12 is required for glomerular macrophage infiltration and crescent formation in anti-GBM glomerulonephritis. METHODS: Accelerated anti-GBM disease was induced in groups of MMP-12 gene deficient mice (MMP-12-/-) and wild type C57BL/6 J (WT) controls, which were killed 12 days after injection of anti-GBM serum...
November 8, 2016: Nephrology
https://www.readbyqxmd.com/read/27811142/loss-of-epithelial-gq-and-g11-signaling-inhibits-tgf%C3%AE-production-but-promotes-il-33-mediated-macrophage-polarization-and-emphysema
#18
Alison E John, Michael R Wilson, Anthony Habgood, Joanne Porte, Amanda L Tatler, Anastasios Stavrou, Gino Miele, Lisa Jolly, Alan J Knox, Masao Takata, Stefan Offermanns, R Gisli Jenkins
Heterotrimeric guanine nucleotide-binding protein (G protein) signaling links hundreds of G protein-coupled receptors with four G protein signaling pathways. Two of these, one mediated by Gq and G11 (Gq/11) and the other by G12 and G13 (G12/13), are implicated in the force-dependent activation of transforming growth factor-β (TGFβ) in lung epithelial cells. Reduced TGFβ activation in alveolar cells leads to emphysema, whereas enhanced TGFβ activation promotes acute lung injury and idiopathic pulmonary fibrosis...
October 25, 2016: Science Signaling
https://www.readbyqxmd.com/read/27807143/hif-kdm3a-mmp12-regulatory-circuit-ensures-trophoblast-plasticity-and-placental-adaptations-to-hypoxia
#19
Damayanti Chakraborty, Wei Cui, Gracy X Rosario, Regan L Scott, Pramod Dhakal, Stephen J Renaud, Makoto Tachibana, M A Karim Rumi, Clifford W Mason, Adam J Krieg, Michael J Soares
The hemochorial placenta develops from the coordinated multilineage differentiation of trophoblast stem (TS) cells. An invasive trophoblast cell lineage remodels uterine spiral arteries, facilitating nutrient flow, failure of which is associated with pathological conditions such as preeclampsia, intrauterine growth restriction, and preterm birth. Hypoxia plays an instructive role in influencing trophoblast cell differentiation and regulating placental organization. Key downstream hypoxia-activated events were delineated using rat TS cells and tested in vivo, using trophoblast-specific lentiviral gene delivery and genome editing...
November 15, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27798868/gene-expression-analysis-identifies-specific-patterns-of-dysregulated-molecular-pathways-and-genetic-subgroups-of-human-hepatocellular-carcinoma
#20
Holger G Hass, Ulrich Vogel, Michael Scheurlen, Jürgen Jobst
BACKGROUND: Hepatocellular carcinoma comprises of a group of heterogeneous tumors of different etiologies. The multistep process of liver carcinogenesis involves various genetic and phenotypic alterations. The molecular pathways and driver mutations involved are still under investigation. MATERIALS AND METHODS: DNA micorarray technology was used to identify differentially expressed genes between human hepatocarcinoma and non-tumorous liver tissues to establish a unique specific gene-expression profile independent of the underlying liver disease...
2016: Anticancer Research
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