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Tissue specific protein interactions

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https://www.readbyqxmd.com/read/29332049/free-heme-and-amyloid-%C3%AE-a-fatal-liaison-in-alzheimer-s-disease
#1
Elisabeth Chiziane, Henriette Telemann, Martin Krueger, Juliane Adler, Jürgen Arnhold, A Alia, Jörg Flemmig
While the etiology of Alzheimer's disease (AD) is still unknown, an increased formation of amyloid-β (Aβ) peptide and oxidative processes are major pathological mechanism of the disease. The interaction of Aβ with free heme leads to the formation of peroxidase-active Aβ-heme complexes. However, enzyme-kinetic data and systematic mutational studies are still missing. These aspects were addressed in this study to evaluate the role of Aβ-heme complexes in AD. The enzyme-kinetic measurements showed peroxidase-specific pH- and H2O2-dependencies...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29331522/nanos3-not-nanos1-and-nanos2-is-a-germ-cell-marker-gene-in-large-yellow-croaker-during-embryogenesis
#2
Kunhuang Han, Shihai Chen, Mingyi Cai, Yonghua Jiang, Ziping Zhang, Yilei Wang
In this study, three nanos gene subtypes (Lcnanos1, Lcnanos2 and Lcnanos3) from Larimichthys crocea, were cloned and characterized. We determined the spatio-temporal expression patterns of each subtype in tissues as well as the cellular localization of mRNA in embryos. Results showed that deduced Nanos proteins have two main homology domains: N-terminal CCR4/NOT1 deadenylase interaction domain and highly conserved carboxy-terminal region bearing two conserved CCHC zinc-finger motifs. The expression levels of Lcnanos1 in testis were significantly higher than other tissues, followed by heart, brain, eye, and ovary...
January 10, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29330815/supplementing-dietary-rosemary-rosmarinus-officinalis-l-powder-and-vitamin-e-in-broiler-chickens-evaluation-of-humoral-immune-response-lymphoid-organs-and-blood-proteins
#3
Hossein Rostami, Alireza Seidavi, Mohammad Dadashbeiki, Yadollah Asadpour, João Simões, Assar Ali Shah, Vito Laudadio, Caterina Losacco, Antonella Perillo, Vincenzo Tufarelli
The aim of the present study was to evaluate the effect rosemary (Rosmarinus officinalis L.) powder (RP) and vitamin E (VE) at different levels on humoral immunity of broilers during a 42-day production cycle. A total of 270 1-day-old male chicks were assigned to nine groups with three replicates of ten birds each, and diets were supplemented with 0, 0.5, or 1.0% RP and 0, 100, or 200 mg/kg VE, respectively. Commercial-inactivated vaccines against avian influenza (AI) and Newcastle disease (ND) viruses, and living infectious bronchitis virus (IBV) vaccine were administered by spray method...
January 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29330773/mechanistic-regulation-of-epithelial-to-mesenchymal-transition-through-ras-signaling-pathway-and-therapeutic-implications-in-human-cancer
#4
REVIEW
Kiran Tripathi, Minal Garg
RAS effector signaling instead of being simple, unidirectional and linear cascade, is actually recognized as highly complex and dynamic signaling network. RAF-MEK-ERK cascade, being at the center of complex signaling network, links to multiple scaffold proteins through feed forward and feedback mechanisms and dynamically regulate tumor initiation and progression. Three isoforms of Ras harbor mutations in a cell and tissue specific manner. Besides mutations, their epigenetic silencing also attributes them to exhibit oncogenic activities...
January 12, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29330036/regulation-of-fibrotic-changes-by-the-synergistic-effects-of-cytokines-dimensionality-and-matrix-towards-the-development-of-an-in-vitro-human-dermal-hypertrophic-scar-model
#5
Shikha Chawla, Sourabh Ghosh
Current therapeutic strategies to reduce scarring in full thickness skin defect offer limited success due to poor understanding of scar tissue formation and the underlying signaling pathways. There is an urgent need to develop human cell based in vitro scar tissue models as animal testing is associated with ethical and logistic complications and inter-species variations. Pro-inflammatory cytokines play critical role in regulating scar development through complex interplay and interaction with the ECM and corresponding signaling pathways...
January 9, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29328541/gm-csf-ameliorates-micro-vascular-barrier-integrity-via-pericytes-derived-ang-1-in-wound-healing
#6
Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang
BACKGROUND: Skin wound healing involves complex coordinated interactions of cells, tissues and mediators. Maintaining microvascular barrier integrity is one of the key events for endothelial homeostasis during wound healing. Vasodilation is observed after vasoconstriction, which causes blood vessels to become porous, facilitates leukocyte infiltration and aids angiogenesis at the wound-area, post-injury. Eventually, vessel integrity has to be re-established for vascular maturation. Numerous studies have found that granulocyte macrophage colony-stimulating factor (GM-CSF) accelerates wound healing by inducing recruitment of repair cells into the injury area and releases of cytokines...
January 12, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29327289/study-of-adenylyl-cyclase-g%C3%AE-s-interactions-and-identification-of-novel-ac-ligands
#7
Appalaraju Jaggupilli, Premnath Dhanaraj, Alexander Pritchard, John L Sorensen, Shyamala Dakshinamurti, Prashen Chelikani
Adenylyl cyclases (ACs) are membrane bound enzymes that catalyze the production of cAMP from ATP in response to the activation by G-protein Gαs. Different isoforms of ACs are ubiquitously expressed in different tissues involved in regulatory mechanisms in response to specific stimulants. There are 9 AC isoforms present in humans, with AC5 and AC6 proposed to play a vital role in cardiac functions. The activity of AC6 is sensitive to nitric oxide, such that nitrosylation of the protein might regulate its function...
January 11, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29326160/hypoxia-inducible-lipid-droplet-associated-protein-inhibits-adipose-triglyceride-lipase
#8
Krishna M Padmanabha Das, Lisa Wechselberger, Márton Liziczai, Montserrat De la Rosa Rodriguez, Gernot F Grabner, Christoph Heier, Roland Viertlmayr, Claudia Radler, Joerg Lichtenegger, Robert Zimmermann, Jan Willem Borst, Rudolf Zechner, Sander Kersten, Monika Oberer
Elaborate control mechanisms of intracellular triacylglycerol (TAG) breakdown are critically involved in the maintenance of energy homeostasis. Hypoxia inducible lipid droplet associated protein (HILPDA)/Hypoxia inducible gene-2 (Hig-2) has been shown to affect intracellular TAG levels, yet, the underlying molecular mechanisms are unclear. Here, we show that HILPDA inhibits adipose triglyceride lipase (ATGL), the enzyme catalyzing the first step of intracellular TAG hydrolysis. HILPDA shares structural similarity with G0/G1 switch gene 2 (G0S2), an established inhibitor of ATGL...
January 11, 2018: Journal of Lipid Research
https://www.readbyqxmd.com/read/29325713/the-interaction-of-tak1-and-tab1-enhances-lps-induced-cytokine-release-via-modulating-nf-%C3%AE%C2%BAb-activation-larimichthys-crocea
#9
Shi-Yuan Bao, Qing-Xue Sun, Cui-Luan Yao
Transforming growth factor-β-activating kinase 1 (TAK1) is triggered by foreign pathogenic infection and involves in proinflammatory response through the activation of nuclear factor-κB (NF-κB), which is specifically regulated by TAK1-binding protein 1 (TAB1). However, the expression and regulatory characterizations of TAK1 and TAB1 in fish immune response remain largely unknown. In the present study, the cDNA sequences of TAK1 (LcTAK1) and TAB1 (LcTAB1) were identified from large yellow croaker, Larimichthys crocea...
January 8, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29325627/epigenetic-mechanisms-underlying-nervous-system-diseases
#10
Irfan A Qureshi, Mark F Mehler
Epigenetic mechanisms act as control systems for modulating genomic structure and activity in response to evolving profiles of cell-extrinsic, cell-cell, and cell-intrinsic signals. These dynamic processes are responsible for mediating cell- and tissue-specific gene expression and function and gene-gene and gene-environmental interactions. The major epigenetic mechanisms include DNA methylation and hydroxymethylation; histone protein posttranslational modifications, nucleosome remodeling/repositioning, and higher-order chromatin reorganization; noncoding RNA regulation; and RNA editing...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29323674/can-5-methylcytosine-analogues-with-extended-alkyl-side-chains-guide-dna-methylation
#11
D Kotandeniya, C L Seiler, J Fernandez, S S Pujari, L Curwick, K Murphy, S Wickramaratne, S Yan, D Murphy, Yuk Y Sham, N Y Tretyakova
5-Methylcytosine (MeC) is an endogenous modification of DNA that plays a crucial role in DNA-protein interactions, chromatin structure, epigenetic regulation, and DNA repair. MeC is produced via enzymatic methylation of the C-5 position of cytosine by DNA-methyltransferases (DNMT) which use S-adenosylmethionine (SAM) as a cofactor. Hemimethylated CG dinucleotides generated as a result of DNA replication are specifically recognized and methylated by maintenance DNA methyltransferase 1 (DNMT1). The accuracy of DNMT1-mediated methylation is essential for preserving tissue-specific DNA methylation and thus gene expression patterns...
January 11, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29322439/analysis-of-circular-rnas-using-the-web-tool-circinteractome
#12
Amaresh C Panda, Dawood B Dudekula, Kotb Abdelmohsen, Myriam Gorospe
Circular RNAs (circRNAs) are generated through nonlinear back splicing, during which the 5' and 3' ends are covalently joined. Consequently, the lack of free ends makes them very stable compared to their counterpart linear RNAs. By selectively interacting with microRNAs and RNA-binding proteins (RBPs), circRNAs have been shown to influence gene expression programs. We designed a web tool, CircInteractome, in order to (1) explore potential interactions of circRNAs with RBPs, (2) design specific divergent primers to detect circRNAs, (3) study tissue- and cell-specific circRNAs, (4) identify gene-specific circRNAs, (5) explore potential miRNAs interacting with circRNAs, and (6) design specific siRNAs to silence circRNAs...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29322415/laser-microdissection-of-cellular-compartments-for-expression-analyses-in-cancer-models
#13
Tae-Su Han, Masanobu Oshima
Cancer tissues are composed of various cell types including cancer cells, cancer-associated fibroblasts (CAFs), tumor-associated macrophages (TAMs) and endothelial cells. These surrounding stromal cells form the tumor microenvironment, partly through the inflammatory response, which plays an important role in the development and malignant progression of cancer. It is therefore important to examine the expression profiles and protein modifications of each cellular component independently to decipher the interaction between the tumor cells and the microenvironment...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29321510/a-model-of-human-lung-fibrogenesis-for-the-assessment-of-anti-fibrotic-strategies-in-idiopathic-pulmonary-fibrosis
#14
Katy M Roach, Amanda Sutcliffe, Laura Matthews, Gill Elliott, Chris Newby, Yassine Amrani, Peter Bradding
Idiopathic pulmonary fibrosis (IPF) is a progressive interstitial lung disease with limited therapeutic options. KCa3.1 ion channels play a critical role in TGFβ1-dependent pro-fibrotic responses in human lung myofibroblasts. We aimed to develop a human lung parenchymal model of fibrogenesis and test the efficacy of the selective KCa3.1 blocker senicapoc. 2 mm3 pieces of human lung parenchyma were cultured for 7 days in DMEM ± TGFβ1 (10 ng/ml) and pro-fibrotic pathways examined by RT-PCR, immunohistochemistry and collagen secretion...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29321472/desumoylase-senp6-maintains-osteochondroprogenitor-homeostasis-by-suppressing-the-p53-pathway
#15
Jianshuang Li, Di Lu, Hong Dou, Huadie Liu, Kevin Weaver, Wenjun Wang, Jiada Li, Edward T H Yeh, Bart O Williams, Tao Yang, Ling Zheng
The development, growth, and renewal of skeletal tissues rely on the function of osteochondroprogenitors (OCPs). Protein sumoylation/desumoylation has emerged as a pivotal mechanism for stem cell/progenitor homeostasis, and excessive sumoylation has been associated with cell senescence and tissue aging, but its role in regulating OCP function is unclear. Here we show that postnatal loss of the desumoylase SUMO1/sentrin-specific peptidase 6 (SENP6) causes premature aging. OCP-specific SENP6 knockout mice exhibit smaller skeletons, with elevated apoptosis and cell senescence in OCPs and chondrocytes...
January 10, 2018: Nature Communications
https://www.readbyqxmd.com/read/29321072/tissue-specific-transcriptomes-of-anisakis-simplex-sensu-stricto-and-anisakis-pegreffii-reveal-potential-molecular-mechanisms-involved-in-pathogenicity
#16
Serena Cavallero, Fabrizio Lombardo, Xiaopei Su, Marco Salvemini, Cinzia Cantacessi, Stefano D'Amelio
BACKGROUND: Larval stages of the sibling species of parasitic nematodes Anisakis simplex (sensu stricto) (s.s.) (AS) and Anisakis pegreffii (AP) are responsible for a fish-borne zoonosis, known as anisakiasis, that humans aquire via the ingestion of raw or undercooked infected fish or fish-based products. These two species differ in geographical distribution, genetic background and peculiar traits involved in pathogenicity. However, thus far little is known of key molecules potentially involved in host-parasite interactions...
January 10, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29320372/a-dentin-derived-hydrogel-bioink-for-3d-bioprinting-of-cell-laden-scaffolds-for-regenerative-dentistry
#17
Avathamsa Athirasala, Anthony Tahayeri, Greeshma Thrivikraman, Cristiane M França, Nelson Monteiro, Victor Tran, Jack Ferracane, Luiz E Bertassoni
Recent studies in tissue engineering have adopted extracellular matrix (ECM) derived scaffolds as natural and cytocompatible microenvironments for tissue regeneration. The dentin matrix, specifically, has been shown to be associated with a host of soluble and insoluble signaling molecules that can promote odontogenesis. Here, we have developed a novel bioink, blending printable alginate (3% w/v) hydrogels with the soluble and insoluble fractions of the dentin matrix. We have optimized the printing parameters and the concentrations of the individual components of the bioink for print accuracy, cell viability and odontogenic potential...
January 10, 2018: Biofabrication
https://www.readbyqxmd.com/read/29317505/g%C3%AE-identity-dictates-efficacy-of-g%C3%AE-%C3%AE-signaling-and-macrophage-migration
#18
Kanishka Senarath, John L Payton, Dinesh Kankanamge, Praneeth Siripurapu, Mithila Tennakoon, Ajith Karunarathne
G protein βγ subunit (Gβγ) is a major signal transducer and controls processes ranging from cell migration to gene transcription. Despite having significant subtype heterogeneity and exhibiting diverse cell and tissue-specific expression levels, Gβγ is often considered a unified signaling entity with a defined functionality. However, the molecular and mechanistic basis of Gβγ's signaling specificity is unknown. Here, we demonstrate that Gγ subunits, bearing the sole plasma membrane (PM)-anchoring motif, control the PM affinity of Gβγ and thereby differentially modulate Gβγ effector signaling in a Gγ-specific manner...
January 9, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29315021/the-global-regulatory-protein-vela-is-required-for-symbiosis-between-the-endophytic-fungus-epichlo%C3%A3-festucae-and-lolium-perenne
#19
Mostafa Rahnama, Richard Johnson, Christine Rosalie Voisey, Wayne R Simpson, Damien J Fleetwood
Epichloë species fungi form bioprotective endophytic symbioses with many cool-season grasses, including agriculturally important forage grasses. Despite its importance, relatively little is known about the molecular details of the interaction and the regulatory genes involved. One of the key global regulators in fungal secondary metabolism and development is the VelA protein. In this study, velA was functionally characterised in vitro and in fungal interaction with its host perennial ryegrass. The velA gene is required for E...
January 9, 2018: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/29314045/expression-and-functional-analysis-of-two-psbs-genes-in-bamboo-phyllostachys-edulis
#20
Yongfeng Lou, Huayu Sun, Sining Wang, Hao Xu, Lichao Li, Hansheng Zhao, Zhimin Gao
Higher plants have an array of photoprotection mechanisms alleviating the harmful effects of light. Non-photochemical quenching (NPQ) is one of the photoprotective mechanisms, which dissipates the excess of light energy absorbed in the light-harvesting complexes (LHCs) into thermal energy. The PsbS (photosystem II subunit S), a member of the LHC family thought to be present exclusively in higher plants, is supposed to activate NPQ through interactions with antenna proteins. However, the roles of PsbS in bamboo remain unclear...
January 4, 2018: Physiologia Plantarum
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