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Master cell disease

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https://www.readbyqxmd.com/read/28229902/impact-of-high-glucose-and-ages-on-cultured-kidney-derived-cells-effects-on-cell-viability-lysosomal-enzymes-and-effectors-of-cell-signaling-pathways
#1
Giovani B Peres, Nestor Schor, Yara M Michelacci
We have previously reported decreased expression and activities of lysosomal cathepsins B and L in diabetic kidney. Relevant morphological changes were observed in proximal tubules, suggesting that these cells are implicated in the early stages of the disease. The aim of the present study was to investigate the mechanisms that lead to these changes. The effects of high glucose (HG) and advanced glycation end products (AGEs) on cell viability, lysosomal enzymes and other effectors of cell signaling of cultured kidney cells were studied...
February 13, 2017: Biochimie
https://www.readbyqxmd.com/read/28224211/mechanisms-overseeing-myeloid-derived-suppressor-cell-production-in-neoplastic-disease
#2
REVIEW
Colleen S Netherby, Scott I Abrams
Perturbations in myeloid cell differentiation are common in neoplasia, culminating in immature populations known as myeloid-derived suppressor cells (MDSCs). MDSCs favor tumor progression due to their ability to suppress host immunity or promote invasion and metastasis. They are thought to originate from the bone marrow as a result of exposure to stromal- or circulating tumor-derived factors (TDFs). Although great interest has been placed on understanding how MDSCs function, less is known regarding how MDSCs develop at a transcriptional level...
February 21, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28222503/selenium-levels-in-serum-red-blood-cells-and-cerebrospinal-fluid-of-alzheimer-s-disease-patients-a-report-from-the-australian-imaging-biomarker-lifestyle-flagship-study-of-ageing-aibl
#3
Bárbara R Cardoso, Dominic J Hare, Ashley I Bush, Qiao-Xin Li, Christopher J Fowler, Colin L Masters, Ralph N Martins, Katherine Ganio, Amber Lothian, Soumya Mukherjee, Eugene A Kapp, Blaine R Roberts
Selenium (Se) protects cells against oxidative stress damage through a range of bioactive selenoproteins. Increased oxidative stress is a prominent feature of Alzheimer's disease (AD), and previous studies have shown that Se deficiency is associated with age-related cognitive decline. In this study, we assessed Se status in different biofluids from a subgroup of participants in the Australian Imaging, Biomarkers and Lifestyle Flagship Study of Ageing. As Se in humans can either be an active component of selenoproteins or inactive via non-specific incorporation into other proteins, we used both size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) and tandem mass spectrometry to characterize selenoproteins in serum...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28220655/ppars-in-the-central-nervous-system-roles-in-neurodegeneration-and-neuroinflammation
#4
Juan M Zolezzi, Manuel J Santos, Sussy Bastías-Candia, Claudio Pinto, Juan A Godoy, Nibaldo C Inestrosa
Over 25 years have passed since peroxisome proliferators-activated receptors (PPARs), were first described. Like other members of the nuclear receptors superfamily, PPARs have been defined as critical sensors and master regulators of cellular metabolism. Recognized as ligand-activated transcription factors, they are involved in lipid, glucose and amino acid metabolism, taking part in different cellular processes, including cellular differentiation and apoptosis, inflammatory modulation and attenuation of acute and chronic neurological damage in vivo and in vitro...
February 20, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28219733/meibocyte-differentiation-and-renewal-insights-into-novel-mechanisms-of-meibomian-gland-dysfunction-mgd
#5
REVIEW
Ho Sik Hwang, Geraint J Parfitt, Donald J Brown, James V Jester
This paper reviews our current understanding of age-related meibomian gland dysfunction (MGD) and the role of the nuclear receptor, peroxisome proliferator-activated receptor gamma (PPARγ), in the regulation of meibomian gland function, meibocyte differentiation and lipid synthesis. The studies suggest that PPARγ is a master regulator of meibocyte differentiation and function, whose expression and nuclear signaling coupled with meibocyte renewal is altered during aging, potentially leading to atrophy of the meibomian gland as seen in clinical MGD...
February 17, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28215281/emerging-major-histocompatibility-complex-class-i-related-functions-of-nlrc5
#6
S T Chelbi, A T Dang, G Guarda
Recent evidence demonstrates a key role for the nucleotide-binding oligomerization domain-like receptor (NLR) family member NLRC5 (NLR family, CARD domain containing protein 5) in the transcriptional regulation of major histocompatibility complex (MHC) class I and related genes. Detailed information on NLRC5 target genes in various cell types and conditions is emerging. Thanks to its analogy to CIITA (class II major MHC transactivator), a NLR family member known for over 20 years to be the master regulator of MHC class II gene transcription, also the molecular mechanisms underlying NLRC5 function are being rapidly unraveled...
2017: Advances in Immunology
https://www.readbyqxmd.com/read/28207501/pd-l1-pd-1-check-point-in-gastric-carcinoma-with-lymphoid-stroma-case-report-with-immunochemical-study
#7
Anna Crescenzi, Chiara Taffon, Michele Donati, Michele Pier Luca Guarino, Sergio Valeri, Roberto Coppola
INTRODUCTION: Gastric carcinoma with lymphoid stroma is an unusual type of gastric tumor associated with a better prognosis than typical gastric carcinomas. The hallmark of this cancer is a prominent lymphoid infiltration of the stroma that represents an intense host lymphocytic response. The programmed death 1-programmed death-ligand 1 (PD-1/PD-L1) axis has recently emerged as a master immune checkpoint that controls antitumor immune responses against many neoplasms. PATIENT'S CONCERNS CASE STUDY AND OUTCOME: We report the case of a male patient with gastric carcinoma with lymphoid stroma with a large mass infiltrating the gastric wall without nodal metastasis...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28205321/an-investigative-graduate-laboratory-course-for-teaching-modern-dna-techniques
#8
Alexandre de Lencastre, A Thomas Torello, Lani C Keller
This graduate-level DNA methods laboratory course is designed to model a discovery-based research project and engages students in both traditional DNA analysis methods and modern recombinant DNA cloning techniques. In the first part of the course, students clone the Drosophila ortholog of a human disease gene of their choosing using Gateway(®) cloning. In the second part of the course, students examine the expression of their gene of interest in human cell lines by reverse transcription PCR and learn how to analyze data from quantitative reverse transcription PCR (qRT-PCR) experiments...
February 16, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28197667/discovery-and-progress-of-direct-cardiac-reprogramming
#9
REVIEW
Hidenori Kojima, Masaki Ieda
Cardiac disease remains a major cause of death worldwide. Direct cardiac reprogramming has emerged as a promising approach for cardiac regenerative therapy. After the discovery of MyoD, a master regulator for skeletal muscle, other single cardiac reprogramming factors (master regulators) have been sought. Discovery of cardiac reprogramming factors was inspired by the finding that multiple, but not single, transcription factors were needed to generate induced pluripotent stem cells (iPSCs) from fibroblasts. We first reported a combination of cardiac-specific transcription factors, Gata4, Mef2c, and Tbx5 (GMT), that could convert mouse fibroblasts into cardiomyocyte-like cells, which were designated as induced cardiomyocyte-like cells (iCMs)...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28194024/regnase-1-a-rapid-response-ribonuclease-regulating-inflammation-and-stress-responses
#10
REVIEW
Renfang Mao, Riyun Yang, Xia Chen, Edward W Harhaj, Xiaoying Wang, Yihui Fan
RNA-binding proteins (RBPs) are central players in post-transcriptional regulation and immune homeostasis. The ribonuclease and RBP Regnase-1 exerts critical roles in both immune cells and non-immune cells. Its expression is rapidly induced under diverse conditions including microbial infections, treatment with inflammatory cytokines and chemical or mechanical stimulation. Regnase-1 activation is transient and is subject to negative feedback mechanisms including proteasome-mediated degradation or mucosa-associated lymphoid tissue 1 (MALT1) mediated cleavage...
February 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28188440/pathology-of-infectious-diseases-what-does-the-future-hold
#11
REVIEW
Paul Hofman, Sebastian Lucas, Grégory Jouvion, Arnault Tauziède-Espariat, Fabrice Chrétien, Gieri Cathomas
The demand for expertise in pathology for the diagnosis of infectious diseases (ID) is continually growing, due to an increase in ID in immunocompromised patients and in the (re)-emergence of common and uncommon diseases, including tropical infections and infections with newly identified microbes. The microbiology laboratory plays a crucial role in diagnosing infections, identifying the responsible infectious agents and establishing sensitivity of pathogens to drug therapy. Pathology, however, is the only way to correlate the presence of an infectious agent with the reaction it evokes at cell and tissue level...
February 10, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28185248/mastering-gut-permeability-new-roles-for-old-friends
#12
Michael Bramhall, Colby Zaph
Mast cells are innate immune cells that respond rapidly to infection in barrier tissues such as the skin and intestinal mucosa. Expulsion of parasitic worms in the gut involves a robust type 2 host response, and an acute mastocytosis is often generated at the site of infection. However, the role of mast cells in resistance to worm infections appears to be parasite specific. Mast cells are also involved in tissue repair, but the long-term contribution of mast cell activation after worm expulsion has not been definitively studied...
February 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28183717/the-transcriptional-regulator-of-the-chaperone-response-hsf1-controls-hepatic-bioenergetics-and-protein-homeostasis
#13
Aijun Qiao, Xiongjie Jin, Junfeng Pang, Demetrius Moskophidis, Nahid F Mivechi
Metabolic energy reprogramming facilitates adaptations to a variety of stress conditions and cellular dysfunction, but how the energetic demands are monitored and met in response to physiological stimuli remains elusive. Our data support a model demonstrating that heat shock factor 1 (HSF1), a master transcriptional regulator of the chaperone response, has been coopted from its role as a critical protein quality-control regulator to having a central role in systemic energy sensing and for metabolic adaptation to nutrient availability...
February 9, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28180060/gprc6a-jack-of-all-metabolism-or-master-of-none
#14
REVIEW
Min Pi, Satoru Kenneth Nishimoto, L Darryl Quarles
BACKGROUND: GPRC6A, a widely expressed G-protein coupled receptor, is proposed to be a master regulator of complex endocrine networks and metabolic processes. GPRC6A is activated by multiple ligands, including osteocalcin (Ocn), testosterone (T), basic amino acids, and various cations. SCOPE OF REVIEW: We review the controversy surrounding GPRC6A functions. In mice, GPRC6A is proposed to integrate metabolic functions through the coordinated secretion of hormones, including insulin, GLP-1, T, and IL-6, and direct effects of this receptor to control glucose and fat metabolism in the liver, skeletal muscle, and fat...
February 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28173625/bet-proteins-an-approach-to-future-therapies-in-transplantation
#15
Beatriz Suarez-Álvarez, Ramón M Rodríguez, Marta Ruiz-Ortega, Carlos López-Larrea
In order to develop new efficient therapies for organ transplantation it is essential to acquire a comprehensive knowledge of the molecular mechanisms and processes, such as immune activation, chronic inflammation and fibrosis that lead to rejection and long-term graft loss. Recent efforts have shed some light on the epigenetic regulation associated with these processes. In this context, the bromo and extraterminal (BET) family of bromodomain proteins (BRD2, BRD3, BRD4 and BRDT) have emerged as major epigenetic players, connecting chromatin structure with gene expression changes...
February 7, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28167322/-nlrp3-inflammasome-blockade-reduces-liver-inflammation-and-fibrosis-in-experimental-nash-in-mice
#16
Auvro R Mridha, Alexander Wree, Avril A B Robertson, Matthew M Yeh, Casey D Johnson, Derrick M Van Rooyen, Fahrettin Haczeyni, Narci C-H Teoh, Christopher Savard, George N Ioannou, Seth L Masters, Kate Schroder, Matthew A Cooper, Ariel E Feldstein, Geoffrey C Farrell
BACKGROUND AND AIMS: NOD-like receptor protein 3 (NLRP3) inflammasome activation occurs in NAFLD. We used the first small molecule NLRP3 inhibitor, MCC950, to test whether inflammasome blockade alters inflammatory recruitment and liver fibrosis in two murine models of steatohepatitis. METHODS: We fed foz/foz and wildtype (Wt) mice atherogenic diet 16 weeks, gavaged MCC950 or vehicle until 24 weeks, then determining NAFLD phenotype. In mice fed methionine/choline deficient (MCD) diet, we gavaged MCC950 or vehicle 6 weeks and determined effects on liver fibrosis...
February 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28165011/mtorc1-independent-tfeb-activation-via-akt-inhibition-promotes-cellular-clearance-in-neurodegenerative-storage-diseases
#17
Michela Palmieri, Rituraj Pal, Hemanth R Nelvagal, Parisa Lotfi, Gary R Stinnett, Michelle L Seymour, Arindam Chaudhury, Lakshya Bajaj, Vitaliy V Bondar, Laura Bremner, Usama Saleem, Dennis Y Tse, Deepthi Sanagasetti, Samuel M Wu, Joel R Neilson, Fred A Pereira, Robia G Pautler, George G Rodney, Jonathan D Cooper, Marco Sardiello
Neurodegenerative diseases characterized by aberrant accumulation of undigested cellular components represent unmet medical conditions for which the identification of actionable targets is urgently needed. Here we identify a pharmacologically actionable pathway that controls cellular clearance via Akt modulation of transcription factor EB (TFEB), a master regulator of lysosomal pathways. We show that Akt phosphorylates TFEB at Ser467 and represses TFEB nuclear translocation independently of mechanistic target of rapamycin complex 1 (mTORC1), a known TFEB inhibitor...
February 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28163301/homeostasis-altering-molecular-processes-as-mechanisms-of-inflammasome-activation
#18
REVIEW
Adrian Liston, Seth L Masters
The innate immune system uses a distinct set of germline-encoded pattern recognition receptors (PRRs) to initiate downstream inflammatory cascades. This recognition system is in stark contrast to the adaptive immune system, which relies on highly variable, randomly generated antigen receptors. A key limitation of the innate immune system's reliance on fixed PRRs is its inflexibility in responding to rapidly evolving pathogens. Recent advances in our understanding of inflammasome activation suggest that the innate immune system also has sophisticated mechanisms for responding to pathogens for which there is no fixed PRR...
February 6, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28148240/a-novel-statistical-approach-for-identification-of-the-master-regulator-transcription-factor
#19
Sinjini Sikdar, Susmita Datta
BACKGROUND: Transcription factors are known to play key roles in carcinogenesis and therefore, are gaining popularity as potential therapeutic targets in drug development. A 'master regulator' transcription factor often appears to control most of the regulatory activities of the other transcription factors and the associated genes. This 'master regulator' transcription factor is at the top of the hierarchy of the transcriptomic regulation. Therefore, it is important to identify and target the master regulator transcription factor for proper understanding of the associated disease process and identifying the best therapeutic option...
February 2, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28143903/tfeb-inhibits-endothelial-cell-inflammation-and-reduces-atherosclerosis
#20
Haocheng Lu, Yanbo Fan, Congzhen Qiao, Wenying Liang, Wenting Hu, Tianqing Zhu, Jifeng Zhang, Y Eugene Chen
Transcription factor EB (TFEB) is a master regulator of autophagy and lysosome biogenesis. We investigated the function of TFEB in vascular biology and pathophysiology and demonstrated that TFEB in endothelial cells inhibited inflammation and reduced atherosclerosis development. Laminar shear stress, which protects against atherosclerosis, increased TFEB abundance in cultured primary human endothelial cells. Furthermore, TFEB overexpression in these cells was anti-inflammatory, whereas TFEB knockdown aggravated inflammation...
January 31, 2017: Science Signaling
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