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Adaptor protein 2

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https://www.readbyqxmd.com/read/29792386/disparate-effects-of-shb-gene-deficiency-on-disease-characteristics-in-murine-models-of-myeloid-b-cell-and-t-cell-leukemia
#1
Maria Jamalpour, Xiujuan Li, Karin Gustafsson, Jeffrey W Tyner, Michael Welsh
The Src homology-2 domain protein B is an adaptor protein operating downstream of tyrosine kinases. The Shb gene knockout has been found to accelerate p210 Breakpoint cluster region-cAbl oncogene 1 tyrosine kinase-induced leukemia. In human myeloid leukemia were tumors with high Src homology-2 domain protein B mRNA content, tumors were, however, associated with decreased latency and myeloid leukemia exhibiting immune cell characteristics. Thus, the aim of this study was to investigate the effects of Shb knockout on the development of leukemia in three additional models, that is, colony stimulating factor 3 receptor-T618I-induced neutrophilic leukemia, p190 Breakpoint cluster region-cAbl oncogene 1 tyrosine kinase-induced B-cell leukemia, and G12D-Kras-induced T-cell leukemia/thymic lymphoma...
April 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29782852/atp6v1h-regulates-the-growth-and-differentiation-of-bone-marrow-stromal-cells
#2
Lin Li, Shaoqing Yang, Yanli Zhang, Dongrui Ji, Zuolin Jin, Xiaohong Duan
ATP6V1H encodes subunit H of vacuolar ATPase (V-ATPase) and may regulate osteoclastic function. The deficiency of ATP6V1H caused bone loss in human, mouse and zebrafish. In this report, we identified the mechanisms by which ATP6V1H regulates proliferation and differentiation of bone marrow stromal cells (BMSCs). We found that ATP6V1H was expressed in BMSCs, andAtp6v1h+/- BMSCs exhibited the lower proliferation rate, cell cycle arrest and reduced osteogenic differentiation capacity, as well as the increased adipogenic potentials...
May 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775741/replacement-of-fishmeal-by-spirulina-arthrospira-platensis-affects-growth-immune-related-gene-expression-in-gibel-carp-carassius-auratus-gibelio-var-cas-iii-and-its-challenge-against-aeromonas-hydrophila-infection
#3
Shenping Cao, Peiyu Zhang, Tao Zou, Shuzhan Fei, Dong Han, Junyan Jin, Haokun Liu, Yunxia Yang, Xiaoming Zhu, Shouqi Xie
The present study examined the effect of dietary spirulina, Arthrospira platensis on growth performance, blood physiological indices, immune-related gene expressions and resistance of juvenile gibel carp against Aeromonas hydrophila infection. Four isonitrogenous (360 g kg-1 ) and isolipidic (90 g kg-1 ) diets were formulated with containing different levels of spirulina powder of 0 g (SP0, the control diet), 3.38 g (SP3.38), 6.76 g (SP6.76) and 13.52 g (SP13.52) per 100 g diet to replace 0%, 25%, 50% and 100% of fishmeal protein, respectively...
May 15, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29774640/regulatory-roles-of-flavonoids-on-inflammasome-activation-during-inflammatory-responses
#4
REVIEW
Young-Su Yi
Inflammation is an innate immune response to noxious stimuli to protect the body from pathogens and dangers. Inflammatory responses consist of two main steps: priming and triggering. In priming, inflammatory cells increase expressions of inflammatory molecules, while in triggering, inflammasomes are activated, resulting in cell death and pro-inflammatory cytokine secretion. Inflammasomes are protein complexes comprising intracellular pattern recognition receptors (PRRs) (e.g. nucleotide-binding oligomerization domain-like receptors (NLRs), absent in melanoma 2 (AIM2), and caspases-4/5/11) and pro-caspase-1 with or without a bipartite adaptor molecule ASC...
May 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29774516/periodic-variation-of-aak1-in-an-a%C3%AE-1-42-induced-mouse-model-of-alzheimer-s-disease
#5
Xue Fu, Meiling Ke, Weihua Yu, Xia Wang, Qian Xiao, Min Gu, Yang Lü
Inhibition of endocytosis in an Alzheimer's disease (AD) model has been shown to be able to prevent amyloid β (Aβ)-induced damage and to exert a beneficial effect in treating AD. Adaptor-associated kinase 1 (AAK1), which binds to the adaptor protein complex 2 (AP-2), regulates the process of clathrin-mediated endocytosis. However, how AAK1 expression varies over the course of AD is unknown. In this study, we investigated AAK1 levels in AD model mice over time. Aβ1-42 was used to establish a mouse AD model, and the Morris water maze test was used to characterize the time course of Aβ1-42 -induced cognition changes...
May 17, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29774040/-oligocellula1-high-expression-of-osmotically-responsive-genes15-promotes-cell-proliferation-with-histone-deacetylase9-and-powerdress-during-leaf-development-in-arabidopsis-thaliana
#6
Marina Suzuki, Nanae Shinozuka, Tomohiro Hirakata, Miyuki T Nakata, Taku Demura, Hirokazu Tsukaya, Gorou Horiguchi
Organ size regulation is dependent on the precise spatial and temporal regulation of cell proliferation and cell expansion. A number of transcription factors have been identified that play a key role in the determination of aerial lateral organ size, but their functional relationship to various chromatin modifiers has not been well understood. To understand how leaf size is regulated, we previously isolated the oligocellula1 ( oli1 ) mutant of Arabidopsis thaliana that develops smaller first leaves than the wild type (WT) mainly due to a reduction in the cell number...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29772377/impact-of-steroid-hormones-e2-and-p-on-the-nlrp3-asc-casp1-axis-in-primary-mouse-astroglia-and-bv-2-cells-after-in-vitro-hypoxia
#7
Alexander Slowik, Leoni Lammerding, Adib Zendedel, Pardes Habib, Cordian Beyer
Clinical and animal model studies have demonstrated the neuroprotective and anti-inflammatory effects of 17beta-estradiol (E2) and progesterone (P) in different disease models of the central nervous system (CNS) including ischemic stroke. Inflammasomes are involved in the interleukin-1 beta (IL1beta) maturation, in particular, NLRP3, the adaptor protein apoptosis-associated speck-like protein containing a CARD (ASC) and the active caspase-1 (Casp1) form. Recently, we showed that administration of E2 or P selectively regulated these components after experimental ischemic stroke in rats...
May 14, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29769272/original-ligand-for-lt%C3%AE-r-is-light-insight-into-evolution-of-the-lt-lt%C3%AE-r-system
#8
Tomoki Maeda, Hiroaki Suetake, Tomoyuki Odaka, Toshiaki Miyadai
The lymphotoxin (LT)/LTβ receptor (LTβR) axis is crucial for the regulation of immune responses and development of lymphoid tissues in mammals. Despite the importance of this pathway, the existence and function of LT and LTβR remain obscure for nonmammalian species. In this study, we report a nonmammalian LTβR and its ligand. We demonstrate that TNF-New (TNFN), which has been considered orthologous to mammalian LT, was expressed on the cell surface as a homomer in vitro. This different protein structure indicates that TNFN is not orthologous to mammalian LTα and LTβ...
May 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29768694/de-novo-variants-in-rhobtb2-an-atypical-rho-gtpase-gene-cause-epileptic-encephalopathy
#9
Hazrat Belal, Mitsuko Nakashima, Hiroshi Matsumoto, Kenji Yokochi, Mariko Taniguchi-Ikeda, Kazushi Aoto, Mohammed Badrul Amin, Azusa Maruyama, Hiroaki Nagase, Takeshi Mizuguchi, Satoko Miyatake, Noriko Miyake, Kazumoto Iijima, Shigeaki Nonoyama, Naomichi Matsumoto, Hirotomo Saitsu
By whole exome sequencing, we identified three de novo RHOBTB2 variants in three patients with epileptic encephalopathies (EEs). Interestingly, all three patients showed acute encephalopathy (febrile status epilepticus), with magnetic resonance imaging revealing hemisphere swelling or reduced diffusion in various brain regions. RHOBTB2 encodes Rho-related BTB domain-containing protein 2, an atypical Rho GTPase that is a substrate-specific adaptor or itself is a substrate for the Cullin-3 (CUL3)-based ubiquitin/proteasome complex...
May 16, 2018: Human Mutation
https://www.readbyqxmd.com/read/29761014/strain-specific-differential-expression-of-astrocytes-and-microglia-in-the-mouse-hippocampus
#10
Jong Whi Kim, Sung Min Nam, Dae Young Yoo, Hyo Young Jung, In Koo Hwang, Je Kyung Seong, Yeo Sung Yoon
Introduction: Genetic background influences neurotransmitter expression and function of the hippocampus. Genetic background influences the phenotype of the hippocampus, but expression of neuroglia in hippocampus has not been well established dependent on various mouse strains. Objectives: In this study, we investigated the effects of genetic background on cell population of astrocytes and microglia in eight widely used inbred strains (C57BL/6J, A/J, BALB/c, C3H/HeJ, FVB, 129/SvJ, DBA/1, and DBA/2) and one outbred strain (ICR)...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29729453/the-slam-family-receptors-potential-therapeutic-targets-for-inflammatory-and-autoimmune-diseases
#11
REVIEW
Matthew A Dragovich, Adam Mor
The signaling lymphocytic activation molecule (SLAM) family is comprised of nine distinct receptors (SLAMF1 through SLAMF9) that are expressed on hematopoietic cells. All of these receptors, with the exception of SLAMF4, are homotypic by nature as downstream signaling occurs when hematopoietic cells that express the same SLAM receptor interact. The SLAM family receptor function is largely controlled via SLAM associated protein (SAP) family adaptors. The SAP family adaptors consist of SAP, Ewing sarcoma associated transcript (EAT)-2, and EAT-2-related transducer (ERT)...
May 3, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29720392/activation-of-self-incompatibility-signaling-in-transgenic-arabidopsis-thaliana-is-independent-of-ap2-based-clathrin-mediated-endocytosis
#12
Masaya Yamamoto, Takeshi Nishio, June B Nasrallah
Internalization of plasma membrane (PM)-localized ligand-activated receptor kinases and their trafficking to sorting endosomes have traditionally been viewed as functioning primarily in the down-regulation of receptor signaling, but are now considered to be also essential for signaling by some receptors. A major mechanism for internalization of PM proteins is clathrin-mediated endocytosis (CME). CME is mediated by the Adaptor Protein Complex 2 (AP2), which is involved in interaction of the AP2 μ-adaptin subunit with a tyrosine-based Yxxφ motif located in the cytoplasmic domain of the cargo protein...
May 2, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29698675/human-choroidal-melanocytes-express-functional-toll-like-receptors-tlrs
#13
Adrian V Cioanca, Peter J McCluskey, Steven S Eamegdool, Michele C Madigan
Toll-like receptors (TLRs) are a class of pattern recognition receptors that sense highly conserved pathogen associated antigenic determinants, triggering an innate immune response and subsequently instructing the adaptive immune system so that together, the pathogen can be eliminated. TLRs are widely distributed in human ocular tissues and cell types, and are active players in ocular inflammation. To date, the presence and function of TLRs on human choroidal melanocytes (HCMs), the most abundant choroidal cell type, have not been characterized...
April 23, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29694668/a-link-between-alzheimer-s-and-type-ii-diabetes-mellitus-ca-2-mediated-signal-control-and-protein-localization
#14
REVIEW
Yuko Tsutsui, Franklin A Hays
We propose protein localization dependent signal activation (PLDSA) as a model to describe pre-existing protein partitioning between the cytosol, and membrane surface, as a means to modulate signal activation, specificity, and robustness. We apply PLDSA to explain possible molecular links between type II diabetes mellitus (T2DM) and Alzheimer's disease (AD) by describing Ca+2 -mediated interactions between the Src non-receptor tyrosine kinase and p52Shc adaptor protein. We suggest that these interactions may serve as a contributing factor to disease development and progression...
April 25, 2018: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/29686302/src-like-adaptor-protein-2-slap2-is-a-negative-regulator-of-kit-d816v-mediated-oncogenic-transformation
#15
Kaja Rupar, Sausan A Moharram, Julhash U Kazi, Lars Rönnstrand
KIT is a receptor tyrosine kinase (RTK) involved in several cellular processes such as regulation of proliferation, survival and differentiation of early hematopoietic cells, germ cells and melanocytes. Activation of KIT results in phosphorylation of tyrosine residues in the receptor, and recruitment of proteins that mediate downstream signaling and also modulate receptor signaling. Here we show that the SRC-like adaptor protein 2 (SLAP2) binds to wild-type KIT in a ligand-dependent manner and is furthermore found constitutively associated with the oncogenic mutant KIT-D816V...
April 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29685905/identification-of-a-novel-invasion-promoting-region-in-insulin-receptor-substrate-2-irs2
#16
Jose Mercado-Matos, Jenny Janusis, Sha Zhu, Samuel S Chen, Leslie M Shaw
Although the insulin receptor substrate (IRS) proteins IRS1 and IRS2 share considerable homology and activate common signaling pathways, their contributions to breast cancer are distinct. IRS1 has been implicated in the proliferation and survival of breast tumor cells. In contrast, IRS2 facilitates glycolysis, invasion and metastasis. To determine the mechanistic basis for IRS2-dependent functions, we investigated unique structural features of IRS2 that are required for invasion. Our studies revealed that the ability of IRS2 to promote invasion is dependent upon upstream IGF-1R/IR activation and the recruitment and activation of PI3K, functions shared with IRS1...
April 23, 2018: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29683921/effects-of-exercise-on-asc-methylation-and-il-1-cytokines-in-heart-failure
#17
Brittany Butts, Javed Butler, Sandra B Dunbar, Elizabeth Corwin, Rebecca A Gary
INTRODUCTION/PURPOSE: Inflammation contributes to heart failure (HF) progression and the interleukin (IL)-1 cytokine IL-1β is implicated in this process. The adaptor protein ASC is necessary for inflammasome activation of IL-1β. Lower ASC methylation is associated with worse outcomes in HF. The purpose of this study was to examine the effects of exercise on changes in ASC methylation and activation of the interleukin-1 family cytokine IL-1β in persons with HF. METHODS: Participants (N=54) were randomized to receive exercise intervention (n=38) or attention control (n=16) for 3 months...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29682880/activation-of-nlrp3-inflammasome-in-macrophages-by-mycoplasmal-lipoproteins-and-lipopeptides
#18
Ayumi Saeki, Masahiro Sugiyama, Akira Hasebe, Toshihiko Suzuki, Ken-Ichiro Shibata
The NLRP3 inflammasome, an intracellular sensor consisting of the NOD-like receptor family, pyrin domain containing 3 (NLRP3), the adaptor protein apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC), and procaspase-1, plays critical roles in host defense against microbial pathogens by inducing production of interleukin (IL)-1β and IL-18. Mycoplasma salivarium and Mycoplasma pneumoniae cells activated murine bone marrow-derived macrophages (BMMs) to induce production of IL-1α, IL-1β, and IL-18...
April 23, 2018: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29675572/baicalin-modulates-appl2-glucocorticoid-receptor-signaling-cascade-promotes-neurogenesis-and-attenuates-emotional-and-olfactory-dysfunctions-in-chronic-corticosterone-induced-depression
#19
Chong Gao, Qiaohui Du, Wenting Li, Ruixia Deng, Qi Wang, Aimin Xu, Jiangang Shen
Olfactory dysfunction is often accompanied with anxiety- and depressive-like behaviors in depressive patients. Impaired neurogenesis in hippocampus and subventricular zone (SVZ)-olfactory bulb (OB) contribute to anxiety- and depressive-like behaviors and olfactory dysfunctions. However, the underlying mechanisms of olfactory dysfunction remain unclear. Our previous study indicates that adaptor protein, phosphotyrosine interacting with PH domain and leucine zipper 2 (APPL2), could affect the activity and sensitivity of glucocorticoid receptor (GR) and mediate impaired hippocampal neurogenesis, which contribute the development of depression...
April 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29671793/search-for-partner-proteins-of-a-thaliana-immunophilins-involved-in-the-control-of-plant-immunity
#20
Inna A Abdeeva, Gennady V Pogorelko, Liliya G Maloshenok, Maria V Mokrykova, Oksana V Fursova, Sergey A Bruskin
The involvement of plant immunophilins in multiple essential processes such as development, various ways of adapting to biotic and abiotic stresses, and photosynthesis has already been established. Previously, research has demonstrated the involvement of three immunophilin genes ( AtCYP19-1/ROC3 , AtFKBP65/ROF2 , and AtCYP57 ) in the control of plant response to invasion by various pathogens. Current research attempts to identify host target proteins for each of the selected immunophilins. As a result, candidate interactors have been determined and confirmed using a yeast 2-hybrid (Y2H) system for protein⁻protein interaction assays...
April 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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