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Adaptor protein 2

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https://www.readbyqxmd.com/read/29137271/environmental-conditions-differentially-affect-neurobehavioral-outcomes-in-a-mouse-model-of-sepsis-associated-encephalopathy
#1
Mu-Huo Ji, Hui Tang, Dan Luo, Li-Li Qiu, Min Jia, Hong-Mei Yuan, Shan-Wu Feng, Jian-Jun Yang
Brain dysfunction remains a common complication after sepsis development and is an independent risk factor for a poorer prognosis and an increased mortality. Here we tested the hypothesis that the behavioral outcomes after lipopolysaccharides (LPS) administration are exacerbated by an impoverished environment (IE) and alleviated by an enriched environment (EE), respectively. Mice were randomly allocated in a standard environment (SE), an EE, or an IE for 4 weeks after LPS or normal saline (NS) administration...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29133316/study-protocol-for-think-a-multinational-open-label-phase-i-study-to-assess-the-safety-and-clinical-activity-of-multiple-administrations-of-nkr-2-in-patients-with-different-metastatic-tumour-types
#2
Caroline Lonez, Bikash Verma, Alain Hendlisz, Philippe Aftimos, Ahmad Awada, Eric Van Den Neste, Gaetan Catala, Jean-Pascal H Machiels, Fanny Piette, Jason B Brayer, David A Sallman, Tessa Kerre, Kunle Odunsi, Marco L Davila, David E Gilham, Frédéric F Lehmann
INTRODUCTION: NKR-2 are autologous T cells genetically modified to express a chimeric antigen receptor (CAR) comprising a fusion of the natural killer group 2D (NKG2D) receptor with the CD3ζ signalling domain, which associates with the adaptor molecule DNAX-activating protein of 10 kDa (DAP10) to provide co-stimulatory signal upon ligand binding. NKG2D binds eight different ligands expressed on the cell surface of many tumour cells and which are normally absent on non-neoplastic cells...
November 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/29131484/the-major-cellulases-cbh-1-and-cbh-2-of-neurospora-crassa-rely-on-distinct-er-cargo-adaptors-for-efficient-er-exit
#3
Trevor Starr, A Pedro Gonçalves, Neeka Meshgin, N Louise Glass
Filamentous fungi are native secretors of lignocellulolytic enzymes and are used as protein-producing factories in the industrial biotechnology sector. Despite the importance of these organisms in industry, relatively little is known about the filamentous fungal secretory pathway or how it might be manipulated for improved protein production. Here we use Neurospora crassa as a model filamentous fungus to interrogate the requirements for trafficking of cellulase enzymes from the endoplasmic reticulum to the Golgi...
November 13, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/29128526/functional-analysis-of-cullin-3-e3-ligases-in-tumorigenesis
#4
REVIEW
Ji Cheng, Jianping Guo, Zhiwei Wang, Brian J North, Kaixiong Tao, Xiangpeng Dai, Wenyi Wei
Cullin 3-RING ligases (CRL3) play pivotal roles in the regulation of various physiological and pathological processes, including neoplastic events. The substrate adaptors of CRL3 typically contain a BTB domain that mediates the interaction between Cullin 3 and target substrates to promote their ubiquitination and subsequent degradation. The biological implications of CRL3 adaptor proteins have been well described where they have been found to play a role as either an oncogene, tumor suppressor, or can mediate either of these effects in a context-dependent manner...
November 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29127708/calcimimetic-and-calcilytic-therapies-for-inherited-disorders-of-the-calcium-sensing-receptor-signalling-pathway
#5
REVIEW
Fadil M Hannan, Mie K Olesen, Rajesh V Thakker
THE CALCIUM-SENSING RECEPTOR (CAS RECEPTOR) PLAYS A PIVOTAL ROLE IN EXTRACELLULAR CALCIUM HOMEOSTASIS AND GERMLINE LOSS- AND GAIN-OF-FUNCTION MUTATIONS CAUSE FAMILIAL HYPOCALCIURIC HYPERCALCAEMIA (FHH) AND AUTOSOMAL DOMINANT HYPOCALCAEMIA (ADH), RESPECTIVELY. CAS RECEPTOR SIGNAL TRANSDUCTION IN THE PARATHYROID GLANDS IS LIKELY REGULATED BY G-PROTEIN SUBUNIT Α11 (GΑ11) AND ADAPTOR-RELATED PROTEIN COMPLEX-2 SIGMA SUBUNIT (AP2Σ), AND RECENT STUDIES HAVE IDENTIFIED GERMLINE MUTATIONS OF THESE PROTEINS AS A CAUSE OF FHH AND/OR ADH...
November 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29127148/ubc9-binds-to-adap-and-is-required-for-rap1-membrane-recruitment-rac1-activation-and-integrin-mediated-t-cell-adhesion
#6
Yiwei Xiong, Chengjin Ye, Naiqi Yang, Madanqi Li, Hebin Liu
Although the immune adaptor adhesion and degranulation-promoting adaptor protein (ADAP) acts as a key mediator of integrin inside-out signaling leading to T cell adhesion, the regulation of this adaptor during integrin activation and clustering remains unclear. We now identify Ubc9, the sole small ubiquitin-related modifier E2 conjugase, as an essential regulator of ADAP where it is required for TCR-induced membrane recruitment of the small GTPase Rap1 and its effector protein RapL and for activation of the small GTPase Rac1 in T cell adhesion...
November 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29123520/dexd-h-box-helicase-36-signaling-via-myeloid-differentiation-primary-response-gene-88-contributes-to-nf-%C3%AE%C2%BAb-activation-to-type-2-porcine-reproductive-and-respiratory-syndrome-virus-infection
#7
Huiyuan Jing, Yanrong Zhou, Liurong Fang, Zhen Ding, Dang Wang, Wenting Ke, Huanchun Chen, Shaobo Xiao
DExD/H-box helicase 36 (DHX36) is known to be an ATP-dependent RNA helicase that unwinds the guanine-quadruplexes DNA or RNA, but emerging data suggest that it also functions as pattern recognition receptor in innate immunity. Porcine reproductive and respiratory syndrome virus (PRRSV) is an Arterivirus that has been devastating the swine industry worldwide. Interstitial pneumonia is considered to be one of the most obvious clinical signs of PRRSV infection, suggesting that the inflammatory response plays an important role in PRRSV pathogenesis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29123471/vglut2-trafficking-is-differentially-regulated-by-adaptor-proteins-ap-1-and-ap-3
#8
Haiyan Li, Magda S Santos, Chihyung K Park, Yuriy Dobry, Susan M Voglmaier
Release of the major excitatory neurotransmitter glutamate by synaptic vesicle exocytosis depends on glutamate loading into synaptic vesicles by vesicular glutamate transporters (VGLUTs). The two principal isoforms, VGLUT1 and 2, exhibit a complementary pattern of expression in adult brain that broadly distinguishes cortical (VGLUT1) and subcortical (VGLUT2) systems, and correlates with distinct physiological properties in synapses expressing these isoforms. Differential trafficking of VGLUT1 and 2 has been suggested to underlie their functional diversity...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29121163/gene-expression-profiling-reveals-heterogeneity-of-perivascular-adipose-tissues-surrounding-coronary-and-internal-thoracic-arteries
#9
Danbo Lu, Wei Wang, Limin Xia, Pu Xia, Yan Yan
The internal thoracic artery (ITA) that differs from coronary artery (CA), rarely develops atherosclerosis. Understanding the mechanism underlying such a difference will help to pave a new way to the prevention and treatment of the disease. We hypothesize herein that the difference in susceptibility to atherosclerosis between CA and ITA is attributable to the heterogeneity of perivascular adipose tissues (PVATs) surrounding these two kinds of arteries, i.e. PVAT-CA and PVAT-ITA. We isolated PVAT from eight patients of coronary heart disease (CHD) and four non-CHD patients...
November 7, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29117569/ros-control-mitochondrial-motility-through-p38-and-the-motor-adaptor-miro-trak
#10
Valentina Debattisti, Akos A Gerencser, Masao Saotome, Sudipto Das, György Hajnóczky
Mitochondrial distribution and motility are recognized as central to many cellular functions, but their regulation by signaling mechanisms remains to be elucidated. Here, we report that reactive oxygen species (ROS), either derived from an extracellular source or intracellularly generated, control mitochondrial distribution and function by dose-dependently, specifically, and reversibly decreasing mitochondrial motility in both rat hippocampal primary cultured neurons and cell lines. ROS decrease motility independently of cytoplasmic [Ca(2+)], mitochondrial membrane potential, or permeability transition pore opening, known effectors of oxidative stress...
November 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/29114065/bim-suppresses-the-development-of-sle-by-limiting-myeloid-inflammatory-responses
#11
FuNien Tsai, Philip J Homan, Hemant Agrawal, Alexander V Misharin, Hiam Abdala-Valencia, G Kenneth Haines, Salina Dominguez, Christina L Bloomfield, Rana Saber, Anthony Chang, Chandra Mohan, Jack Hutcheson, Anne Davidson, G R Scott Budinger, Philippe Bouillet, Andrea Dorfleutner, Christian Stehlik, Deborah R Winter, Carla M Cuda, Harris Perlman
The Bcl-2 family is considered the guardian of the mitochondrial apoptotic pathway. We demonstrate that Bim acts as a molecular rheostat by controlling macrophage function not only in lymphoid organs but also in end organs, thereby preventing the break in tolerance. Mice lacking Bim in myeloid cells (LysM(Cre)Bim(fl/fl)) develop a systemic lupus erythematosus (SLE)-like disease that mirrors aged Bim(-/-) mice, including loss of marginal zone macrophages, splenomegaly, lymphadenopathy, autoantibodies (including anti-DNA IgG), and a type I interferon signature...
November 7, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29114012/cbl-downregulation-increases-rbp4-expression-in-adipocytes-of-female-mice
#12
Gulizar Issa Ameen, Silvia Mora
Obesity leads to adipose tissue dysfunction, insulin resistance and diabetes. Adipose tissue produces adipokines,that contribute to regulate insulin sensitivity. In turn insulin stimulates the production and release of some adipokines. Casitas-b-lymphoma proteins (c-Cbl, Cbl-b and Cbl3) are intracellular adaptor signalling proteins that are rapidly phosphorylated by activation of tyrosine kinase receptors. c-Cbl is rapidly phosphorylated by insulin in adipocytes. Here we tested the hypothesis that Cbl signalling regulates adipokine expression in adipose tissue...
November 7, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/29106511/enhanced-sodium-acetate-tolerance-in-saccharomyces-cerevisiae-by-the-thr255ala-mutation-of-the-ubiquitin-ligase-rsp5
#13
Akaraphol Watcharawipas, Daisuke Watanabe, Hiroshi Takagi
Sodium and acetate inhibit cell growth and ethanol fermentation by different mechanisms in Saccharomyces cerevisiae. We identified the substitution of a conserved Thr255 to Ala (T255A) in the essential Nedd4-family ubiquitin ligase Rsp5, which enhances cellular sodium acetate tolerance. The T255A mutation selectively increased the resistance of cells against sodium acetate, suggesting that S. cerevisiae cells possess an Rsp5-mediated mechanism to cope with the composite stress of sodium and acetate. The sodium acetate tolerance was dependent on the extrusion of intracellular sodium ions by the plasma membrane-localized sodium pumps Ena1, Ena2, and Ena5 (Ena1/2/5) and two known upstream regulators: the Rim101 pH signaling pathway and the Hog1 mitogen-activated protein kinase (MAPK)...
November 2, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/29096641/acute-in-utero-exposure-to-lipopolysaccharide-induces-inflammation-in-the-pre-and-postnatal-brain-and-alters-the-glial-cytoarchitecture-in-the-developing-amygdala
#14
Elaine O'Loughlin, Janelle M P Pakan, Deniz Yilmazer-Hanke, Kieran W McDermott
BACKGROUND: Maternal immune activation (MIA) is a risk factor for neurodevelopmental disorders such as autism and schizophrenia, as well as seizure development. The amygdala is a brain region involved in the regulation of emotions, and amygdalar maldevelopment due to infection-induced MIA may lead to amygdala-related disorders. MIA priming of glial cells during development has been linked to abnormalities seen in later life; however, little is known about its effects on amygdalar biochemical and cytoarchitecture integrity...
November 2, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29074618/epidermal-growth-factor-receptors-containing-a-single-tyrosine-in-their-c-terminal-tail-bind-different-effector-molecules-and-are-signaling-competent
#15
Kamaldeep Gill, Jennifer L Macdonald-Obermann, Linda J Pike
The EGF receptor is a classic receptor tyrosine kinase. It contains nine tyrosines in its C-terminal tail, many of which are phosphorylated and bind proteins containing SH2 or phosphotyrosine-binding (PTB) domains. To determine how many and which tyrosines are required to enable EGF receptormediated signaling, we generated a series of EGF receptors that contained only one tyrosine in their C-terminal tail. Assays of the signaling capabilities of these single-Tyr EGF receptors, indicated that they can activate a range of downstream signaling pathways, including MAP kinase and Akt...
October 26, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29074103/molecular-identification-and-functional-analysis-of-two-variants-of-myeloid-differentiation-factor-88-myd88-from-disk-abalone-haliotis-discus-discus
#16
Thanthrige Thiunuwan Priyathilaka, S D N K Bathige, Seongdo Lee, Jehee Lee
Myeloid differentiation factor 88 (MyD88) is a crucial adaptor protein of the Toll-like receptor (TLR)- and interleukin 1 receptor-mediated signaling pathways and is involved in a diverse array of inflammatory responses via NF-κB activation. In the present study, two MyD88 variants were identified from disk abalone (Haliotis discus discus) and designated AbMyD88-2 and AbMyD88-X. The deduced AbMyD88-2 and AbMyD88-X comprised 433 and 354 amino acids with predicted molecular masses of 48.85 kDa and 40.17 kDa, respectively...
October 23, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29069650/dnajb1-hsp40-suppresses-melanoma-differentiation-associated-gene-5-mitochondrial-antiviral-signaling-protein-function-in-conjunction-with-hsp70
#17
Ken Takashima, Hiroyuki Oshiumi, Misako Matsumoto, Tsukasa Seya
Melanoma differentiation-associated gene 5 (MDA5) is a pattern recognition receptor that recognizes cytoplasmic viral double-stranded RNA (dsRNA) and initiates rapid innate antiviral responses. MDA5 forms a filament-like multimer along the dsRNA leading to oligomerization, which in turn activates the adaptor protein mitochondrial antiviral signaling protein (MAVS) to provide a signal platform for the induction of type I interferon (IFN) and proinflammatory cytokines. The conformational switch of MDA5 causes antiviral defense, but excessive activation of the MDA5-MAVS pathway may result in autoimmune diseases...
October 26, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29062315/dual-specificity-phosphatase-12-targets-p38-map-kinase-to-regulate-macrophage-response-to-intracellular-bacterial-infection
#18
Sharol Su Lei Cho, Jian Han, Sharmy J James, Chin Wen Png, Madhushanee Weerasooriya, Sylvie Alonso, Yongliang Zhang
The mitogen-activated protein kinase (MAPK) cascades are activated in innate immune cells such as macrophages upon the detection of microbial infection, critically regulating the expression of proinflammatory cytokines and chemokines such as TNF-α, IL-6, and MCP-1. As a result, activation of MAPKs is tightly regulated to ensure appropriate and adequate immune responses. Dual-specificity phosphatases (DUSPs) are a family of proteins which specifically dephosphorylates threonine and tyrosine residues essential for MAPK activation to negatively regulate their activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29061850/the-brucella-effector-protein-tcpb-induces-degradation-of-inflammatory-caspases-and-thereby-subverts-noncanonical-inflammasome-activation-in-macrophages
#19
Padmaja Jakka, Swapna Namani, Subathra Murugan, Nivedita Rai, Girish Radhakrishnan
The inflammasome contains intracellular receptors that recognize various pathogen-associated molecular patterns and play crucial roles in innate immune responses to invading pathogens. Noncanonical inflammasome activation is mediated by caspase 4/11, which recognizes intracellular LPS and promotes pyroptosis and secretion of proinflammatory cytokines. Brucella species are infectious intracellular pathogens that replicate in professional and nonprofessional phagocytic cells and subvert immune responses for chronic persistence in the host...
October 23, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29058172/the-expression-of-dectin-1-irak1-and-rip2-during-the-host-response-to-aspergillus-fumigatus
#20
Jinguo Liu, Lin Yu, Cuicui Chen, Jian Zhou, Xin Gong, Dandan Li, Dongni Hou, Yuanlin Song, Changzhou Shao
BACKGROUND: C-type lectin receptors (CLRs), Toll-like receptors (TLRs), and Nod-like receptors (NLRs) have the ability to recognize Aspergillus fumigatus (A. fumigates) and induce innate immune response. Dectin-1 is a well-described CLR, while interleukin-1 receptor-associated kinase 1 (Irak1) and receptor-interacting protein 2 (Rip2) are pivotal adaptor proteins of TLRs and NLRs signaling pathways, respectively. OBJECTIVES: Our primary aim is to elucidate whether Dectin-1 regulates the expression of Irak1 and Rip2, and confirm that CLRs, TLRs, and NLRs pathways act synergistically in response to A...
October 23, 2017: Mycopathologia
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