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Immune metabolism

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https://www.readbyqxmd.com/read/28548953/from-rapalogs-to-anti-aging-formula
#1
Mikhail V Blagosklonny
Inhibitors of mTOR, including clinically available rapalogs such as rapamycin (Sirolimus) and Everolimus, are gerosuppressants, which suppress cellular senescence. Rapamycin slows aging and extends life span in a variety of species from worm to mammals. Rapalogs can prevent age-related diseases, including cancer, atherosclerosis, obesity, neurodegeneration and retinopathy and potentially rejuvenate stem cells, immunity and metabolism. Here, I further suggest how rapamycin can be combined with metformin, inhibitors of angiotensin II signaling (Losartan, Lisinopril), statins (simvastatin, atorvastatin), propranolol, aspirin and a PDE5 inhibitor...
May 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548388/epithelial-mesenchymal-plasticity-how-have-quantitative-mathematical-models-helped-improve-our-understanding
#2
REVIEW
Mohit Kumar Jolly, Satyendra C Tripathi, Jason A Somarelli, Samir M Hanash, Herbert Levine
Phenotypic plasticity, the ability of cells to reversibly alter their phenotypes in response to signals, presents a significant clinical challenge to treating solid tumors. Tumor cells utilize phenotypic plasticity to evade therapies, metastasize, and colonize distant organs. As a result, phenotypic plasticity can accelerate tumor progression. A well-studied example of phenotypic plasticity is the bidirectional conversions among epithelial, mesenchymal, and hybrid epithelial/mesenchymal phenotype(s). These conversions can alter a repertoire of cellular traits associated with multiple hallmarks of cancer, such as metabolism, immune-evasion, invasion and metastasis...
May 26, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28548135/immune-regulation-il-10-targets-macrophage-metabolism
#3
Kirsty Minton
No abstract text is available yet for this article.
May 26, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28546562/the-interplay-between-host-immune-cells-and-gut-microbiota-in-chronic-inflammatory-diseases
#4
REVIEW
Donghyun Kim, Melody Y Zeng, Gabriel Núñez
Many benefits provided by the gut microbiota to the host rely on its intricate interactions with host cells. Perturbations of the gut microbiota, termed gut dysbiosis, affect the interplay between the gut microbiota and host cells, resulting in dysregulation of inflammation that contributes to the pathogenesis of chronic inflammatory diseases, including inflammatory bowel disease, multiple sclerosis, allergic asthma and rheumatoid arthritis. In this review, we provide an overview of how gut bacteria modulates host metabolic and immune functions, summarize studies that examined the roles of gut dysbiosis in chronic inflammatory diseases, and finally discuss measures to correct gut dysbiosis as potential therapeutics for chronic inflammatory diseases...
May 26, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28545829/gut-microbiota-and-hepatitis-b-virus-induced-chronic-liver-disease-implications-for-faecal-microbiota-transplantation-therapy
#5
REVIEW
Y Kang, Y Cai
Hepatitis B is one of the most common infectious diseases globally. It has been estimated that there are 350 million chronic hepatitis B virus (HBV) carriers worldwide. The liver is connected to the small intestine by the bile duct, which carries bile formed in the liver to the intestine. Nearly all of the blood that leaves the stomach and intestines must pass through the liver. Human intestines contain a wide diversity of microbes, collectively termed the 'gut microbiota'. Gut microbiota play a significant role in host metabolic processes and host immune modulation, and influence host development and physiology (organ development)...
April 15, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28545737/microrna-146a-governs-fibroblast-activation-and-joint-pathology-in-arthritis
#6
Victoria Saferding, Antonia Puchner, Eliana Goncalves-Alves, Melanie Hofmann, Michael Bonelli, Julia S Brunner, Emine Sahin, Birgit Niederreiter, Silvia Hayer, Hans P Kiener, Elisa Einwallner, Ramzi Nehmar, Raphael Carapito, Philippe Georgel, Marije I Koenders, Mark Boldin, Gernot Schabbauer, Mariola Kurowska-Stolarska, Günter Steiner, Josef S Smolen, Kurt Redlich, Stephan Blüml
Synovial fibroblasts are key cells orchestrating the inflammatory response in arthritis. Here we demonstrate that loss of miR-146a, a key epigenetic regulator of the innate immune response, leads to increased joint destruction in a TNF-driven model of arthritis by specifically regulating the behavior of synovial fibroblasts. Absence of miR-146a in synovial fibroblasts display a highly deregulated gene expression pattern and enhanced proliferation in vitro and in vivo. Deficiency of miR-146a induces deregulation of tumor necrosis factor (TNF) receptor associated factor 6 (TRAF6) in synovial fibroblasts, leading to increased proliferation...
May 22, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28544771/quantitative-proteomic-analysis-of-host-epithelial-cells-infected-by-salmonella-enterica-serovar-typhimurium
#7
Linlu Qi, Mo Hu, Jiaqi Fu, Yanhua Liu, Mei Wu, Kaiwen Yu, Xiaoyun Liu
Systems-level analyses have the capability to offer new insight into host-pathogen interactions on the molecular level. Using Salmonella infection of host epithelial cells as a model system, we previously analyzed intracellular bacterial proteome as a window into pathogens' adaptations to their host environment (Infect. Immun. 2015; J. Proteome Res. 2017). Herein we extended our efforts to quantitatively examine protein expression of host cells during infection. In total, we identified more than 5,000 proteins with 194 differentially regulated proteins upon bacterial infection...
May 25, 2017: Proteomics
https://www.readbyqxmd.com/read/28544484/neglected-issues-concerning-teaching-human-adrenal-steroidogenesis-in-popular-biochemistry-textbooks
#8
Zhiyong Han, Mark S Elliott
In the human body, the adrenal steroids collectively regulate a plethora of fundamental functions, including electrolyte and water balance, blood pressure, stress response, intermediary metabolism, inflammation, and immunity. Therefore, adrenal steroidogenesis is an important biochemistry topic for students to learn in order for them to understand health consequences caused by deficiencies of enzymes in the adrenal steroidogenic pathways. However, popular biochemistry textbooks contain insufficient information and may sometimes give students a misimpression about certain aspects of human adrenal steroidogenesis...
May 19, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28542929/the-immune-response-to-prevotella-bacteria-in-chronic-inflammatory-disease
#9
REVIEW
Jeppe Madura Larsen
The microbiota plays a central role in human health and disease by shaping immune development, immune responses, metabolism, and protecting from invading pathogens. Technical advances that allow comprehensive characterization of microbial communities by genetic sequencing have sparked the hunt for disease modulating bacteria. Emerging studies in humans have linked increased abundance of Prevotella species at mucosal sites to localized and systemic disease, including periodontitis, bacterial vaginosis, rheumatoid arthritis, metabolic disorders, and low-grade systemic inflammation...
May 19, 2017: Immunology
https://www.readbyqxmd.com/read/28542527/genomic-and-transcriptomic-analyses-reveal-adaptation-mechanisms-of-an-acidithiobacillus-ferrivorans-strain-yl15-to-alpine-acid-mine-drainage
#10
Tangjian Peng, Liyuan Ma, Xue Feng, Jiemeng Tao, Meihua Nan, Yuandong Liu, Jiaokun Li, Li Shen, Xueling Wu, Runlan Yu, Xueduan Liu, Guanzhou Qiu, Weimin Zeng
Acidithiobacillus ferrivorans is an acidophile that often occurs in low temperature acid mine drainage, e.g., that located at high altitude. Being able to inhabit the extreme environment, the bacterium must possess strategies to copy with the survival stress. Nonetheless, information on the strategies is in demand. Here, genomic and transcriptomic assays were performed to illuminate the adaptation mechanisms of an A. ferrivorans strain YL15, to the alpine acid mine drainage environment in Yulong copper mine in southwest China...
2017: PloS One
https://www.readbyqxmd.com/read/28542521/regeneration-of-myelin-sheaths-of-normal-length-and-thickness-in-the-zebrafish-cns-correlates-with-growth-of-axons-in-caliber
#11
Marja J Karttunen, Tim Czopka, Marieke Goedhart, Jason J Early, David A Lyons
Demyelination is observed in numerous diseases of the central nervous system, including multiple sclerosis (MS). However, the endogenous regenerative process of remyelination can replace myelin lost in disease, and in various animal models. Unfortunately, the process of remyelination often fails, particularly with ageing. Even when remyelination occurs, it is characterised by the regeneration of myelin sheaths that are abnormally thin and short. This imperfect remyelination is likely to have implications for the restoration of normal circuit function and possibly the optimal metabolic support of axons...
2017: PloS One
https://www.readbyqxmd.com/read/28542251/transcriptome-microrna-analysis-of-sarcoptes-scabiei-and-host-immune-response
#12
Ran He, Xiaobin Gu, Weimin Lai, Xuerong Peng, Guangyou Yang
Scabies is a parasitic disease, caused by the mite Sarcoptes scabiei, and is considered one of the top 50 epidemic diseases and one the most common human skin disease, worldwide. Allergic dermatitis, including an intense itch, is a common symptom, however diagnosis is difficult and there is currently no effective vaccine. The goal of this study was to examine the immune interaction mechanism of both S. scabiei and infected hosts. mRNA-seq and microRNA-seq were conducted on the S. scabiei mite and on infected and uninfected hosts...
2017: PloS One
https://www.readbyqxmd.com/read/28542224/is-spaceflight-induced-immune-dysfunction-linked-to-systemic-changes-in-metabolism
#13
Michael J Pecaut, Xiao Wen Mao, Denise L Bellinger, Karen R Jonscher, Louis S Stodieck, Virginia L Ferguson, Ted A Bateman, Robert P Mohney, Daila S Gridley
The Space Shuttle Atlantis launched on its final mission (STS-135) on July 8, 2011. After just under 13 days, the shuttle landed safely at Kennedy Space Center (KSC) for the last time. Female C57BL/6J mice flew as part of the Commercial Biomedical Testing Module-3 (CBTM-3) payload. Ground controls were maintained at the KSC facility. Subsets of these mice were made available to investigators as part of NASA's Bio-specimen Sharing Program (BSP). Our group characterized cell phenotype distributions and phagocytic function in the spleen, catecholamine and corticosterone levels in the adrenal glands, and transcriptomics/metabolomics in the liver...
2017: PloS One
https://www.readbyqxmd.com/read/28541707/identification-of-a-potent-selective-and-efficacious-phosphatidylinositol-3-kinase-%C3%AE-pi3k%C3%AE-inhibitor-for-the-treatment-of-immunological-disorders
#14
Qingjie Liu, Qing Shi, David Marcoux, Douglas G Batt, Lyndon Cornelius, Lan-Ying Qin, Zheming Ruan, James Neels, Myra Beaudoin Bertrand, Anurag S Srivastava, Ling Li, Robert Joseph Cherney, Hua Gong, Scott H Watterson, Carolyn Weigelt, Kathleen M Gillooly, Kim W McIntyre, Jenny H Xie, Mary T Obermeier, Aberra Fura, Bogdan Sleczka, Kevin Stefanski, R Marcus Fancher, Shweta Padmanabhan, Thatipamula Rp, Ipsit Kundu, Kallem Rajareddy, Rodney Smith, James K Hennan, Dezhi Xing, Jingsong Fan, Paul C Levesque, Qian Ruan, Sidney Pitt, Rosemary Zhang, Donna Pedicord, Jie Pan, Melissa Yarde, Hao Lu, Jonathan Lippy, Christine Goldstine, Stacey Skala, Richard A Rampulla, Arvind Mathur, Anuradha Gupta, Pirama Nayagam Arunachalam, John S Sack, Jodi K Muckelbauer, Mary Ellen Cvijic, Luisa M Salter-Cid, Rajeev S Bhide, Michael A Poss, John Hynes, Percy H Carter, John E Macor, Stefan Ruepp, Gary L Schieven, Joseph A Tino
PI3Kδ plays an important role controlling immune cell function and has therefore been identified as a potential target for the treatment of immunological disorders. This article highlights our work towards the identification of a potent, selective, and efficacious PI3Kδ inhibitor. Through careful SAR, the successful replacement of a polar pyrazole group by a simple chloro or trifluoromethyl group led to improved Caco-2 permeability, reduced Caco-2 efflux, reduced hERG PC activity, and increased selectivity profile while maintaining potency in the CD69 hWB assay...
May 25, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28541512/the-interplay-between-metabolic-remodeling-and-immune-regulation-in-glioblastoma
#15
Pravin Kesarwani, Shiva Kant, Antony Prabhu, Prakash Chinnaiyan
The fields of tumor metabolism and immune oncology have both independently received considerable attention over the last several years. The majority of research in tumor metabolism has largely focused on the Warburg effect and its resulting biologic consequences, including energy and macromolecule production. However, recent investigations have identified elegant, multifaceted strategies by which alterations in tumor metabolism can also contribute towards a potent tolerogenic immune environment. One of the most notable is increased tryptophan metabolism through activation of the indoleamine 2,3-dioxygenase 1 (IDO1) and tryptophan 2,3-dioxygenase (TDO) pathways...
May 25, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28541485/histologically-defined-intratumoral-sequencing-uncovers-evolutionary-cues-into-conserved-molecular-events-driving-gliomagenesis
#16
Antony Prabhu, Pravin Kesarwani, Shiva Kant, Stewart F Graham, Prakash Chinnaiyan
BACKGROUND: Glioblastoma represents an archetypal example of a heterogeneous malignancy. To understand the diverse molecular consequences of this complex tumor ecology, we analyzed RNA-seq data generated from commonly identified intra-tumoral structures in glioblastoma enriched using laser capture microdissection. METHODS: Raw gene-level fragments per kilobase of transcript per million reads mapped (FPKM) values and the associated clinical data were acquired from the publically available Ivy GAP database and analyzed using MetaboAnalyst (v...
May 25, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28540497/large-scale-transcriptome-analysis-reveals-arabidopsis-metabolic-pathways-are-frequently-influenced-by-different-pathogens
#17
Zhenhong Jiang, Fei He, Ziding Zhang
Through large-scale transcriptional data analyses, we highlighted the importance of plant metabolism in plant immunity and identified 26 metabolic pathways that were frequently influenced by the infection of 14 different pathogens. Reprogramming of plant metabolism is a common phenomenon in plant defense responses. Currently, a large number of transcriptional profiles of infected tissues in Arabidopsis (Arabidopsis thaliana) have been deposited in public databases, which provides a great opportunity to understand the expression patterns of metabolic pathways during plant defense responses at the systems level...
May 24, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28539742/neutralization-of-inflammation-by-inhibiting-in-vitro-and-in-vivo-secretory-phospholipase-a2-by-ethanol-extract-of-boerhaavia-diffusa-l
#18
Aladahalli S Giresha, Siddanakoppalu N Pramod, A D Sathisha, K K Dharmappa
BACKGROUND: Inflammation is a normal and necessary prerequisite to healing of the injured tissues. Inflammation contributes to all disease process including immunity, vascular pathology, trauma, sepsis, chemical, and metabolic injuries. The secretory phospholipase A2 (sPLA2) is a key enzyme in the production of pro-inflammatory mediators in chronic inflammatory disorders such as rheumatoid arthritis, coronary heart disease, diabetes, and asthma. The sPLA2 also contribute to neuroinflammatory disorders such as Parkinson's, Alzheimer's, and Crohn's disease...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28539682/the-human-body-as-an-energetic-hybrid-new-perspectives-for-chronic-disease-treatment
#19
REVIEW
Michał Gajewski, Przemysław Rzodkiewicz, Sławomir Maśliński
Inflammatory response is accompanied by changes in cellular energy metabolism. Proinflammatory mediators like plasma C-reactive protein, IL-6, plasminogen activator inhibitor-1, TNF-α or monocyte chemoattractant protein-1 released in the site of inflammation activates immune cells and increase energy consumption. Increased demand for energy creates local hypoxia and lead in consequence to mitochondrial dysfunction. Metabolism of cells is switched to anaerobic glycolysis. Mitochondria continuously generate free radicals that what result in imbalance that causes oxidative stress, which results in oxidative damage...
2017: Reumatologia
https://www.readbyqxmd.com/read/28539549/the-metabolic-regulation-in-immune-cells-and-pathogenesis-of-systemic-lupus-erythematosus-%C3%A2-toward-new-therapeutic-applications%C3%A2
#20
Yusuke Takeshima, Yukiko Iwasaki, Tomohisa Okamura, Keishi Fujio, Kazuhiko Yamamoto
  The importance of cellular metabolism has long been known as Warburg effect; cancer cells are characterized by mitochondrial defect that shifts towards aerobic glycolysis. Recently, many reports have revealed that immune metabolism is a key factor for controlling immune cell proliferation and differentiation. Resting lymphocytes generate energy through oxidative phosphorylation and fatty acid oxidation, whereas activated lymphocytes rapidly shift to glycolysis. Especially in T cells, more precise mechanism of regulating metabolism have been clarified on differentiation from naïve T cells to effector T cells...
2017: Nihon Rinshō Men'eki Gakkai Kaishi, Japanese Journal of Clinical Immunology
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