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Tissue protein interactions

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https://www.readbyqxmd.com/read/28550659/hyperoxia-provokes-a-time-and-dose-dependent-inflammatory-response-in-mechanically-ventilated-mice-irrespective-of-tidal-volumes
#1
Hendrik J F Helmerhorst, Laura R A Schouten, Gerry T M Wagenaar, Nicole P Juffermans, Joris J T H Roelofs, Marcus J Schultz, Evert de Jonge, David J van Westerloo
BACKGROUND: Mechanical ventilation and hyperoxia have the potential to independently promote lung injury and inflammation. Our purpose was to study both time- and dose-dependent effects of supplemental oxygen in an experimental model of mechanically ventilated mice. METHODS: Healthy male C57Bl/6J mice, aged 9-10 weeks, were intraperitoneally anesthetized and randomly assigned to the mechanically ventilated group or the control group. In total, 100 mice were tracheotomized and mechanically ventilated for either 8 or 12 h after allocation to different settings for the applied fractions of inspired oxygen (FiO2, 30, 50, or 90%) and tidal volumes (7...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28550522/reduced-monocyte-adhesion-to-aortae-of-diabetic-plasminogen-activator-inhibitor-1-knockout-mice
#2
Ruozhi Zhao, Khuong Le, Mohammed H Moghadasian, Garry X Shen
OBJECTIVE AND DESIGN: To determine the requirement of plasminogen activator inhibitor-1-knockout (PAI-1) for monocyte adhesion in animals and cells under diabetic conditions. METHODS AND SUBJECTS: Monocyte adhesion assay, enzyme-linked immunosorbent assay, and Western blotting were used in analyzing samples from PAI-1-knockout (PAI-1-KO) mice or cultured human umbilical vein endothelial cells (HUVEC). TREATMENTS: Diabetes in PAI-1-KO and wild-type mice was induced by intraperitoneal injection of streptozotocin (STZ)...
May 26, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28549925/intracellular-domain-contacts-contribute-to-ecadherin-constitutive-dimerization-in-the-plasma-membrane
#3
Deo R Singh, Fozia Ahmed, Sarvenaz Sarabipour, Kalina Hristova
Epithelial cadherin (Ecadherin) is responsible for the intercellular cohesion of epithelial tissues. It forms lateral clusters within adherens cell-cell junctions, but its association state outside these clusters is unknown. Here we use a quantitative FRET approach to show that Ecadherin forms constitutive dimers, and that these dimers exist independently of the actin cytosletelon or cytoplasmic proteins. The dimers are stabilized by inter-molecular contacts that occur along the entire length of Ecadherin, with the intracellular domains having a surprisingly strong favorable contribution...
May 23, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28549913/microrna-186-5p-overexpression-modulates-colon-cancer-growth-by-repressing-the-expression-of-the-fam134b-tumour-inhibitor
#4
Farhadul Islam, Vinod Gopalan, Jelena Vider, Riajul Wahab, Faeza Ebrahimi, Cu-Tai Lu, Kais Kasem, Alfred K Y Lam
OBJECTIVES: The role and underlying mechanism of miR-186-5p in colorectal cancer remain unknown. The present study aims to examine the various cellular effects of miR-186-5p in the carcinogenesis of colorectal cancer. Also, the interacting targets and association of clinicopathological factors with miR-186-5p expression in patients with colorectal cancer were analysed. METHODS: The miR-186-5p expression levels in colorectal cancer tissues (n=126) and colon cancer cell lines (n=3) were analysed by real-time PCR...
May 23, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28549727/topographic-analysis-by-atomic-force-microscopy-of-proteoliposomes-matrix-vesicle-mimetics-harboring-tnap-and-anxa5
#5
Maytê Bolean, Ivana A Borin, Ana M S Simão, Massimo Bottini, Luis A Bagatolli, Marc F Hoylaerts, José L Millán, Pietro Ciancaglini
Atomic force microscopy (AFM) is one of the most commonly used scanning probe microscopy techniques for nanoscale imaging and characterization of lipid-based particles. However, obtaining images of such particles using AFM is still a challenge. The present study extends the capabilities of AFM to the characterization of proteoliposomes, a special class of liposomes composed of lipids and proteins, mimicking matrix vesicles (MVs) involved in the biomineralization process. To this end, proteoliposomes were synthesized, composed of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and 1,2-dipalmitoyl-sn-glycero-3-phospho-L-serine (DPPS), with inserted tissue-nonspecific alkaline phosphatase (TNAP) and/or annexin V (AnxA5), both characteristic proteins of osteoblast-derived MVs...
May 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28549342/mgr1-antigen-37-kda-laminin-receptor-precursor-promotes-cellular-prion-protein-induced-multi-drug-resistance-of-gastric-cancer
#6
Guanhong Luo, Weijie Wang, Qiong Wu, Yuanyuan Lu, Tao Su, Nan Gu, Kai Li, Jingbo Wang, Rui Du, Xiaodi Zhao, Xiaohua Li, Rui Fan, Hongbo Zhang, Yongzhan Nie, Xinmin Zhou, Yongquan Shi, Jie Liang, Xin Wang, Daiming Fan
Cellular prion protein (PrPC), the infective agent of transmissible spongiform encephalopathies, is thought to be related to several cellular physiological and physiopathological processes. We have previously reported that PrPC participates in multi-drug-resistance of gastric cancer. As the salient ligand molecule of PrP for participating in internalization and propagation of the scrapie form of prion protein (PrPSc), 37 kDa laminin receptor precursor protein (37LRP) shared the same gene coding sequence of MGr1-Ag, another protein previously found to be involved in multi-drug-resistance of gastric cancer in our lab...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549341/cdk1-interacts-with-iaspp-to-regulate-colorectal-cancer-cell-proliferation-through-p53-pathway
#7
Wei Gan, Hua Zhao, Tiegang Li, Kuijie Liu, Jiangsheng Huang
CDK1 (cyclin-dependent kinase 1) is a critical regulator of the G2-M checkpoint. CDK1 is considered a possible target for cancer treatment. In addition to CDK1, iASPP plays essential role in maintaining cancer cell proliferation. In the present study, we monitored the expression of CDK1 and iASPP at mRNA and protein levels in CRC tissues and cell lines; we also predicted that iASPP protein might interact with CDK1 protein. By performing GST pull-down assay and Co-IP assay, we confirmed the interaction of CDK1 and iASPP protein...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549197/analysis-of-protein-profile-of-tomato-root-infected-with-fusarium-oxysporum-f-sp-lycopersici
#8
T D Silva, C M A Almeida, C B Malafaia, L M S Oliveira, M V Silva, M T S Correia
Fusarium wilt caused by Fusarium oxysporum f. sp lycopersici (Fol) is one of the main diseases affecting tomatoes. The BHRS 2,3 genotype of tomato is, however, resistant to this disease. A proteomic approach was used to understand the defense mechanisms of this genotype using the tomato root, the first tissue that interacts with the fungus, as a target. Protein was extracted and separated by two-dimensional electrophoresis followed by staining with Coomassie brilliant blue. The proteins were identified by MALDI-TOF/TOF mass spectrometry...
May 25, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28549102/long-non-coding-rna-ccat1-mir-148a-axis-promotes-osteosarcoma-proliferation-and-migration-through-regulating-pik3ip1
#9
Jingwei Zhao, Liming Cheng
Osteosarcoma is the most frequent type of malignant primary bone tumor. Although many efforts have been made, the survival rate of osteosarcoma still remains  unsatisfied. Long non-coding RNAs (lncRNAs) have been demonstrated to be associated with many diseases including tumors, and involved in the regulation of a wide array of pathophysiological processes. Colon-cancer-associated transcript-1 (CCAT1) was first identified in colon cancer and has subsequently been reported to perform many functions in tumor progression...
May 25, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28549065/c-elegans-daf-16-foxo-interacts-with-tgf-%C3%A3-bmp-signaling-to-induce-germline-tumor-formation-via-mtorc1-activation
#10
Wenjing Qi, Yijian Yan, Dietmar Pfeifer, Erika Donner V Gromoff, Yimin Wang, Wolfgang Maier, Ralf Baumeister
Activation of the FOXO transcription factor DAF-16 by reduced insulin/IGF signaling (IIS) is considered to be beneficial in C. elegans due to its ability to extend lifespan and to enhance stress resistance. In the germline, cell-autonomous DAF-16 activity prevents stem cell proliferation, thus acting tumor-suppressive. In contrast, hypodermal DAF-16 causes a tumorous germline phenotype characterized by hyperproliferation of the germline stem cells and rupture of the adjacent basement membrane. Here we show that cross-talk between DAF-16 and the transforming growth factor ß (TGFß)/bone morphogenic protein (BMP) signaling pathway causes germline hyperplasia and results in disruption of the basement membrane...
May 26, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28547659/quiescent-adult-stem-cells-in-murine-teeth-are-regulated-by-shh-signaling
#11
Yuko Ishikawa, Mitsushiro Nakatomi, Hiroko Ida-Yonemochi, Hayato Ohshima
The mechanisms regulating the maintenance of quiescent adult stem cells in teeth remain to be fully elucidated. Our aim is to clarify the relationship between BrdU label-retaining cells (LRCs) and sonic hedgehog (Shh) signaling in murine teeth. After prenatal BrdU labeling, mouse pups were analyzed during postnatal day 1 (P1) to week 5 (P5W). Paraffin sections were processed for immunohistochemistry for BrdU, Sox2, Gli1, Shh, Patched1 (Ptch1) and Ki67 and for in situ hybridization for Shh and Ptch1. Dense LRCs, Gli1-(+) cells and Ptch1-(+) cells were co-localized in the outer enamel epithelium of the apical bud and apical dental papilla of incisors...
May 26, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28546513/the-siah-e3-ubiquitin-ligases-promote-wnt-%C3%AE-catenin-signaling-through-mediating-wnt-induced-axin-degradation
#12
Lei Ji, Bo Jiang, Xiaomo Jiang, Olga Charlat, Amy Chen, Craig Mickanin, Andreas Bauer, Wenqing Xu, Xiaoxue Yan, Feng Cong
The Wnt/β-catenin signaling pathway plays essential roles in embryonic development and adult tissue homeostasis. Axin is a concentration-limiting factor responsible for the formation of the β-catenin destruction complex. Wnt signaling itself promotes the degradation of Axin. However, the underlying molecular mechanism and biological relevance of this targeting of Axin have not been elucidated. Here, we identify SIAH1/2 (SIAH) as the E3 ligase mediating Wnt-induced Axin degradation. SIAH proteins promote the ubiquitination and proteasomal degradation of Axin through interacting with a VxP motif in the GSK3-binding domain of Axin, and this function of SIAH is counteracted by GSK3 binding to Axin...
May 25, 2017: Genes & Development
https://www.readbyqxmd.com/read/28546218/adamts5-deficiency-in-calcified-aortic-valves-is-associated-with-elevated-pro-osteogenic-activity-in-valvular-interstitial-cells
#13
Fei Li, Rui Song, Lihua Ao, T Brett Reece, Joseph C Cleveland, Nianguo Dong, David A Fullerton, Xianzhong Meng
OBJECTIVE: Extracellular matrix proteinases are implicated in the pathogenesis of calcific aortic valve disease. The ADAMTS5 (a disintegrin and metalloproteinase with thrombospondin motifs 5) enzyme is secreted, matrix-associated metalloendopeptidase, capable of degrading extracellular matrix proteins, particularly matrilin 2. We sought to determine the role of the ADAMTS5/matrilin 2 axis in mediating the phenotype transition of valvular interstitial cells (VICs) associated with calcific aortic valve disease...
May 25, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28545768/elastin-microfibril-interface-located-protein-1-transforming-growth-factor-beta-and-implications-on-cardiovascular-complications
#14
REVIEW
Amy Randell, Noriko Daneshtalab
Elastin microfibril interface-located protein 1 (EMILIN1), a glycoprotein, is associated with elastin in the extracellular matrix (ECM) of arteries, lymph vasculature, and other tissues. EMILIN1 particularly has a niche role in elastin fiber biogenesis (elastogenesis) by aiding with the fusion of elastin fibers, rendering them more ordered. In addition to elastogenesis, EMILIN1 has been shown to have roles in maintenance of vascular cell morphology, smooth muscle cell adhesion to elastic fibers, and transforming growth factor (TGFβ) regulation, by inhibiting TGFβ activation via blocking the proteolytic production of the latency-associated peptide/active TGFβ complex...
May 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28545612/drug-repositioning-based-on-triangularly-balanced-structure-for-tissue-specific-diseases-in-incomplete-interactome
#15
Liang Yu, Jin Zhao, Lin Gao
Finding new uses for existing drugs has become a new strategy for decades to treat more patients. Few traditional approaches consider the tissue specificities of diseases. Moreover, disease genes, drug targets and protein interaction (PPI) networks remain largely incomplete and the relationships between drugs and diseases conform to the triangularly balanced structure. Therefore, based on tissue specificities of diseases, we apply the triangularly balanced theory and the module distance defined for incomplete interaction networks to build drug-disease associations...
March 2017: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/28545495/the-impact-of-human-adipose-tissue-derived-stem-cells-on-breast-cancer-cells-implications-for-cell-assisted-lipotransfers-in-breast-reconstruction
#16
Eva Koellensperger, Lilly-Claire Bonnert, Inka Zoernig, Frederik Marmé, Stefanie Sandmann, Günter Germann, Felix Gramley, Uwe Leimer
BACKGROUND: In this study we evaluated the interactions of human adipose tissue-derived stem cells (ADSCs) and different human breast cancer cell lines (BRCAs) with regard to the safety of cell-assisted lipotransfers for breast reconstruction and a thereby unintended co-localization of ADSCs and BRCAs. METHODS: ADSCs were co-cultured with five different human BRCAs (MCF-7, MDA-MB-231, SK-BR-3, ZR-75-30, and EVSA-T) and primary BRCAs from one patient in a transwell system, and cell-cell-interactions were analyzed by assessing doubling time, migration and invasion, angiogenesis, quantitative real-time polymerase chain reaction (PCR) of more than 300 tumor-associated genes, and multiplex protein assays of 20 chemokines and growth factors and eight matrix metalloproteinases (MMPs)...
May 25, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28545372/lectin-carbohydrate-interactions-implications-for-the-development-of-new-anticancer-agents
#17
Evellyne de Oliveira Figueirôa, Cassia Regina Albuquerque da Cunha, Priscilla B S Albuquerque, Raiana Apolinário de Paula, Mary Ângela Aranda-Souza, Matheus Alves da Silva, Adrielle Zagmignan, Maria G Carneiro-da-Cunha, Luís Cláudio Nascimento da Silva, Maria Tereza Dos Santos Correia
Lectins are a large group of proteins found in animals, plants, fungi, and bacteria that recognize specific carbohydrate targets and play an important role in cell recognition and communication, host-pathogen interactions, embryogenesis, and tissue development. Recently, lectins have emerged as important biomedical tools that have been used in the development of immunomodulatory, antipathogenic, and anticancer agents. Several lectins have been shown to have the ability to discriminate between normal cells and tumor cells as a result of their different glycosylation patterns...
May 22, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28544959/effect-of-different-mineralization-processes-on-in-vitro-and-in-vivo-bone-regeneration-and-osteoblast-macrophage-cross-talk-in-co-culture-system-using-dual-growth-factor-mediated-non-mulberry-silk-fibroin-grafted-poly-%C3%B0-caprolactone-nanofibrous-scaffold
#18
Promita Bhattacharjee, Tapas K Maiti, Debasis Bhattacharya, Samit Kumar Nandi
This study evaluates mineralized nanofibrous polymeric scaffolds at supporting in vitro osteogenic differentiation of human mesenchymal stem cells (hMSCs) and in vivo bone tissue regeneration. Co-electrospin, alternative soaking, and electrodeposition were used to introduce hydroxyapatite in non-mulberry silk fibroin grafted poly(Є-caprolactone) nanofibrous scaffolds. Bone morphogenic protein-2 and Transforming growth factor-β, at a potency ratio of 1:1, are covalently coupled onto the scaffolds. hMSCs proliferation and interactions are studied through MTT and Alamar blue assay and scanning electron and confocal microscopy...
May 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28544778/differential-regulation-of-protein-tyrosine-kinase-signaling-by-dock-and-the-ptp61f-variants
#19
Lee F Willoughby, Jan Manent, Kirsten Allan, Han Lee, Marta Portela, Florian Wiede, Coral Warr, Tzu-Ching Meng, Tony Tiganis, Helena E Richardson
Tyrosine phosphorylation-dependent signalling is coordinated by the opposing actions of protein tyrosine kinases (PTKs) and protein tyrosine phosphatases (PTPs). There is a growing list of adaptor proteins that interact with PTPs and facilitate the dephosphorylation of substrates. The extent to which any given adaptor confers selectivity for any given substrate in vivo remains unclear. Here we have taken advantage of Drosophila melanogaster as a model organism to explore the influence of the SH3/SH2 adaptor protein Dock on the abilities of the membrane (PTP61Fm)- and nuclear (PTP61Fn)-targeted variants of PTP61F (the Drosophila othologue of the mammalian enzymes PTP1B and TCPTP respectively) to repress PTK signaling pathways in vivo...
May 23, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28544656/the-cellular-ceramide-transport-protein-cert-promotes-chlamydia-psittaci-infection-and-controls-bacterial-sphingolipid-uptake
#20
Sophia Koch-Edelmann, Sebastian Banhart, Essa M Saied, Laura Rose, Lukas Aeberhard, Michael Laue, Joerg Doellinger, Christoph Arenz, Dagmar Heuer
Chlamydiaceae are bacterial pathogens that cause diverse diseases in humans and animals. Despite their broad host and tissue tropism, all Chlamydia species share an obligate intracellular cycle of development and have evolved sophisticated mechanisms to interact with their eukaryotic host cells. Here, we have analyzed interactions of the zoonotic pathogen Chlamydia psittaci with a human epithelial cell line. We found that C. psittaci recruits the ceramide transport protein CERT to its inclusion. Chemical inhibition and CRISPR/Cas9-mediated knockout of CERT showed that CERT is a crucial factor for C...
May 19, 2017: Cellular Microbiology
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