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https://www.readbyqxmd.com/read/28632202/genome-wide-association-study-of-borderline-personality-disorder-reveals-genetic-overlap-with-bipolar-disorder-major-depression-and-schizophrenia
#1
S H Witt, F Streit, M Jungkunz, J Frank, S Awasthi, C S Reinbold, J Treutlein, F Degenhardt, A J Forstner, S Heilmann-Heimbach, L Dietl, C E Schwarze, D Schendel, J Strohmaier, A Abdellaoui, R Adolfsson, T M Air, H Akil, M Alda, N Alliey-Rodriguez, O A Andreassen, G Babadjanova, N J Bass, M Bauer, B T Baune, F Bellivier, S Bergen, A Bethell, J M Biernacka, D H R Blackwood, M P Boks, D I Boomsma, A D Børglum, M Borrmann-Hassenbach, P Brennan, M Budde, H N Buttenschøn, E M Byrne, P Cervantes, T-K Clarke, N Craddock, C Cruceanu, D Curtis, P M Czerski, U Dannlowski, T Davis, E J C de Geus, A Di Florio, S Djurovic, E Domenici, H J Edenberg, B Etain, S B Fischer, L Forty, C Fraser, M A Frye, J M Fullerton, K Gade, E S Gershon, I Giegling, S D Gordon, K Gordon-Smith, H J Grabe, E K Green, T A Greenwood, M Grigoroiu-Serbanescu, J Guzman-Parra, L S Hall, M Hamshere, J Hauser, M Hautzinger, U Heilbronner, S Herms, S Hitturlingappa, P Hoffmann, P Holmans, J-J Hottenga, S Jamain, I Jones, L A Jones, A Juréus, R S Kahn, J Kammerer-Ciernioch, G Kirov, S Kittel-Schneider, S Kloiber, S V Knott, M Kogevinas, M Landén, M Leber, M Leboyer, Q S Li, J Lissowska, S Lucae, N G Martin, F Mayoral-Cleries, S L McElroy, A M McIntosh, J D McKay, A McQuillin, S E Medland, C M Middeldorp, Y Milaneschi, P B Mitchell, G W Montgomery, G Morken, O Mors, T W Mühleisen, B Müller-Myhsok, R M Myers, C M Nievergelt, J I Nurnberger, M C O'Donovan, L M O Loohuis, R Ophoff, L Oruc, M J Owen, S A Paciga, B W J H Penninx, A Perry, A Pfennig, J B Potash, M Preisig, A Reif, F Rivas, G A Rouleau, P R Schofield, T G Schulze, M Schwarz, L Scott, G C B Sinnamon, E A Stahl, J Strauss, G Turecki, S Van der Auwera, H Vedder, J B Vincent, G Willemsen, C C Witt, N R Wray, H S Xi, A Tadic, N Dahmen, B H Schott, S Cichon, M M Nöthen, S Ripke, A Mobascher, D Rujescu, K Lieb, S Roepke, C Schmahl, M Bohus, M Rietschel
Borderline personality disorder (BOR) is determined by environmental and genetic factors, and characterized by affective instability and impulsivity, diagnostic symptoms also observed in manic phases of bipolar disorder (BIP). Up to 20% of BIP patients show comorbidity with BOR. This report describes the first case-control genome-wide association study (GWAS) of BOR, performed in one of the largest BOR patient samples worldwide. The focus of our analysis was (i) to detect genes and gene sets involved in BOR and (ii) to investigate the genetic overlap with BIP...
June 20, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28630443/chemical-chaperone-tudca-unlike-pba-mitigates-protein-aggregation-efficiently-and-resists-er-and-non-er-stress-induced-hepg2-cell-death
#2
Jagadeesh Kumar Uppala, Amina R Gani, Kolluru V A Ramaiah
Stress induced BSA (bovine serum albumin) protein aggregation is effectively mitigated in vitro by TUDCA (tauroursodeoxycholic acid) than by PBA (4- phenylbutyric acid), chemical chaperones approved by FDA for the treatment of biliary cirrhosis and urea cycle disorders respectively. TUDCA, unlike PBA, enhances trypsin mediated digestion of BSA. TUDCA activates PERK, an ER-resident kinase that phosphorylates the alpha-subunit of eukaryotic initiation factor2 (eIF2α) and promotes the expression of activated transcription factor 4 (ATF4) in HepG2 cells...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622297/p53-mediated-suppression-of-bip-triggers-bik-induced-apoptosis-during-prolonged-endoplasmic-reticulum-stress
#3
Ignacio López, Anne-Sophie Tournillon, Rodrigo Prado Martins, Konstantinos Karakostis, Laurence Malbert-Colas, Karin Nylander, Robin Fåhraeus
Physiological and pathological conditions that affect the folding capacity of the endoplasmic reticulum (ER) provoke ER stress and trigger the unfolded protein response (UPR). The UPR aims to either restore the balance between newly synthesized and misfolded proteins or if the damage is severe, to trigger cell death. However, the molecular events underlying the switch between repair and cell death are not well understood. The ER-resident chaperone BiP governs the UPR by sensing misfolded proteins and thereby releasing and activating the three mediators of the UPR: PERK, IRE1 and ATF6...
June 16, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28619709/loss-of-fam46c-promotes-cell-survival-in-myeloma
#4
Yuan Xiao Zhu, Chang-Xin Shi, Laura A Bruins, Patrick Jedlowski, Xuewei Wang, K Martin Kortüm, Moulun Luo, Jonathan Ahmann, Esteban Braggio, A Keith Stewart
FAM46C is one of the most recurrently mutated genes in multiple myeloma (MM), however its role in disease pathogenesis has not been determined. Here we demonstrate that wild type (WT) FAM46C overexpression induces substantial cytotoxicity in MM cells. In contrast, FAM46C mutations found in MM patients abrogate this cytotoxicity, indicating a survival advantage conferred by the FAM46C mutant phenotype. WT FAM46C overexpression downregulated IRF4, CEBPB, and MYC and upregulated immunoglobulin (Ig) light chain and HSPA5/BIP Furthermore, pathway analysis suggests that enforced FAM46C expression activated the unfolded protein response (UPR) pathway and induced mitochondrial dysfunction...
June 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28619261/sequestosome-1-sqstm1-p62-maintains-protein-folding-capacity-under-endoplasmic-reticulum-stress-in-mouse-hypothalamic-organotypic-culture
#5
Takashi Tominaga, Motomitsu Goto, Takeshi Onoue, Akira Mizoguchi, Mariko Sugiyama, Taku Tsunekawa, Daisuke Hagiwara, Yoshiaki Morishita, Yoshihiro Ito, Shintaro Iwama, Hidetaka Suga, Ryoichi Banno, Hiroshi Arima
Sequestosome 1 (SQSTM1) also known as ubiquitin-binding protein p62 (p62) is a cargo protein involved in the degradation of misfolded proteins via selective autophagy. Disruption of autophagy and resulting accumulation of misfolded proteins in the endoplasmic reticulum (ER) leads to ER stress. ER stress is implicated in several neurodegenerative diseases and obesity. As knockout of p62 (p62KO) reportedly induces obesity in mice, we examined how p62 contributes to ER stress and the ensuing unfolded protein response (UPR) in hypothalamus using mouse organotypic cultures in the present study...
June 12, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28619231/endoplasmic-reticulum-chaperones-tweak-the-mitochondrial-calcium-rheostat-to-control-metabolism-and-cell-death
#6
REVIEW
Tomas Gutiérrez, Thomas Simmen
The folding of secretory proteins is a well-understood mechanism, based on decades of research on endoplasmic reticulum (ER) chaperones. These chaperones interact with newly imported polypeptides close to the ER translocon. Classic examples for these proteins include the immunoglobulin binding protein (BiP/GRP78), and the lectins calnexin and calreticulin. Although not considered chaperones per se, the ER oxidoreductases of the protein disulfide isomerase (PDI) family complete the folding job by catalyzing the formation of disulfide bonds through cysteine oxidation...
May 31, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28618969/penfluridol-induces-endoplasmic-reticulum-stress-leading-to-autophagy-in-pancreatic-cancer
#7
Alok Ranjan, Nadezhda German, Constantinos Mikelis, Kalkunte Srivenugopal, Sanjay K Srivastava
Pancreatic cancer is one of the most aggressive and difficult to treat cancers. Experimental and clinical evidence suggests that high basal state autophagy in pancreatic tumors could induce resistance to chemotherapy. Recently, we have demonstrated that penfluridol suppresses pancreatic tumor growth by autophagy-mediated apoptosis both in vitro and in vivo; however, the mechanism of autophagy induction by penfluridol was not clear. Several studies have established that endoplasmic reticulum stress could lead to autophagy and inhibit tumor progression...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28611075/identification-and-functional-characterization-of-hypoxia-induced-endoplasmic-reticulum-stress-regulating-lncrna-hyperlnc-in-pericytes
#8
Florian C Bischoff, Astrid Werner, David John, Jes-Niels Boeckel, Maria-Theodora Melissari, Phillip Grote, Simone F Glaser, Shemsi Demolli, Shizuka Uchida, Katharina M Michalik, Benjamin Meder, Hugo A Katus, Jan Haas, Wei Chen, Soni S Pullamsetti, Werner Seeger, Andreas M Zeiher, Stefanie Dimmeler, Christoph M Zehendner
Rationale: Pericytes are essential for vessel maturation and endothelial barrier function. Long non-coding RNAs (lncRNAs) regulate many cellular functions, but their role in pericyte biology remains unexplored. Objective: Here we investigate the effect of Hypoxia-Induced Endoplasmic Reticulum Stress Regulating lncRNA (HypERlnc, also known as ENSG00000262454) on pericyte function in vitro and its regulation in human heart failure and idiopathic pulmonary arterial hypertension. Methods and Results: RNA sequencing in human primary pericytes (hPCs) identified hypoxia regulated lncRNAs, including HypERlnc...
June 13, 2017: Circulation Research
https://www.readbyqxmd.com/read/28605187/phytotoxicity-study-on-bidens-sulphurea-sch-bip-as-a-preliminary-approach-for-weed-control
#9
Bruna P da Silva, Mariluce P Nepomuceno, Rosa M Varela, Ascensión Torres, José M G Molinillo, Pedro L C A Alves, Francisco A Macías
Farmers of the Franca region in Brazil observed that Bidens sulphurea was able to eliminate the Panicum maximum weed, which infected coffee plantations, without affecting the crop. In an effort to determine if the inhibitory effects observed were due to the presence of phytotoxic compounds from leaves and roots, a biodirected isolation and spectroscopic characterization has been carried out. The leaf dichloromethane and root acetone extracts were the most active, and the former appeared to be more phytotoxic to the target species, including four weeds...
June 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28597544/endoplasmic-reticulum-proteins-sdf2-and-sdf2l1-act-as-components-of-the-bip-chaperone-cycle-to-prevent-protein-aggregation
#10
Tsutomu Fujimori, Ryoji Suno, Shun-Ichiro Iemura, Tohru Natsume, Ikuo Wada, Nobuko Hosokawa
The folding of newly synthesized proteins in the endoplasmic reticulum (ER) is assisted by ER-resident chaperone proteins. BiP (immunoglobulin heavy-chain-binding protein), a member of the HSP70 family, plays a central role in protein quality control. The chaperone function of BiP is regulated by its intrinsic ATPase activity, which is stimulated by ER-resident proteins of the HSP40/DnaJ family, including ERdj3. Here, we report that two closely related proteins, SDF2 and SDF2L1, regulate the BiP chaperone cycle...
June 9, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28593327/qtl-mapping-of-root-traits-in-phosphorus-deficient-soils-reveals-important-genomic-regions-for-improving-ndvi-and-grain-yield-in-barley
#11
Xue Gong, Glenn McDonald
Major QTLs for root rhizosheath size are not correlated with grain yield or yield response to phosphorus. Important QTLs were found to improve phosphorus efficiency. Root traits are important for phosphorus (P) acquisition, but they are often difficult to characterize and their breeding values are seldom assessed under field conditions. This has shed doubts on using seedling-based criteria of root traits to select and breed for P efficiency. Eight root traits were assessed under controlled conditions in a barley doubled-haploid population in soils differing in P levels...
June 7, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28591217/effects-of-bevacizumab-on-endoplasmic-reticulum-stress-in-hypoxic-retinal-pigment-epithelial-cells
#12
Joo-Hee Park, Moosang Kim, Jong-Hyun Oh
PURPOSE: To investigate the effects of bevacizumab on endoplasmic reticulum (ER) stress in human retinal pigment epithelial (RPE) cells cultured under hypoxic conditions. METHODS: RPE cells (ARPE-19) were cultured under hypoxic conditions (1% O2) with or without bevacizumab (0.3125 mg/mL) for 24 and 48 h. Cell viability was measured by a PrestoBlue assay. The expression of vascular endothelial growth factor (VEGF), binding protein/glucose-regulated protein 78 (BiP/GRP78), and C/EBP homologous protein-10 (CHOP) mRNA was measured by quantitative real-time polymerase chain reaction (qRT-PCR)...
2017: PloS One
https://www.readbyqxmd.com/read/28587480/nutritional-composition-antioxidant-activity-and-isolation-of-scopoletin-from-senecio-nutans-support-of-ancestral-and-new-uses
#13
Claudio Parra, Emilio Soto, Gloria León, Cristian O Salas, Michael Heinrich, Carlos Echiburú-Chau
Continuing with our study characterising Senecio nutans Sch. Bip., we have isolated and identified a simple coumarin, scopoletin, that could be relevant for the biological properties of the species related with the ancestral medical uses. This is the first report of scopoletin from S. nutans. In addition, the extract was analysed for its antioxidant activity using the ABTS and FRAP method as well as providing the first nutritional analyses of this plant from northern Chile highlands.
June 6, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28580641/melatonin-reduces-endoplasmic-reticulum-stress-and-corneal-dystrophy-associated-tgfbip-through-activation-of-endoplasmic-reticulum-associated-protein-degradation
#14
Seung-Il Choi, Eunhee Lee, Begum Akuzum, Jang Bin Jeong, Yong-Sun Maeng, Tae-Im Kim, Eung Kweon Kim
Endoplasmic reticulum (ER) stress is emerging as a factor for the pathogenesis of granular corneal dystrophy type 2 (GCD2). This study was designed to investigate the molecular mechanisms underlying the protective effects of melatonin on ER stress in GCD2. Our results showed that GCD2 corneal fibroblasts were more susceptible to ER stress-induced death than were wild-type cells. Melatonin significantly inhibited GCD2 corneal cell death, caspase-3 activation, and poly (ADP-ribose) polymerase 1 cleavage caused by the ER stress inducer, tunicamycin...
June 5, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28570958/interplay-between-alternatively-spliced-tissue-factor-and-full-length-tissue-factor-in-modulating-coagulant-activity-of-endothelial-cells
#15
B Ünlü, V Y Bogdanov, H H Versteeg
BACKGROUND: Full length Tissue factor (flTF) is a key player in hemostasis and also likely contributes to venous thromboembolism (VTE), the third most common cardiovascular disease. flTF and its minimally coagulant isoform, alternatively spliced TF (asTF), have been detected in thrombi, suggesting participation of both isoforms in thrombogenesis, but data on participation of asTF in hemostasis is lacking. Therefore, we assessed the role of asTF in flTF cofactor activity modulation, using a co-expression system...
May 25, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28564553/structural-and-mechanistic-insights-into-protein-translocation
#16
Tom A Rapoport, Long Li, Eunyong Park
Many proteins are translocated across the endoplasmic reticulum (ER) membrane in eukaryotes or the plasma membrane in prokaryotes. These proteins use hydrophobic signal sequences or transmembrane (TM) segments to trigger their translocation through the protein-conducting Sec61/SecY channel. Substrates are first directed to the channel by cytosolic targeting factors, which use hydrophobic pockets to bind diverse signal and TM sequences. Subsequently, these hydrophobic sequences insert into the channel, docking into a groove on the outside of the lateral gate of the channel, where they also interact with lipids...
May 31, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28561256/lack-of-k140-immunoreactivity-in-junctional-epidermolysis-bullosa-skin-and-keratinocytes-associates-with-misfolded-laminin-egf-like-le-motif-2-of-the-%C3%AE-3-short-arm
#17
A G Condorelli, P Fortugno, F Cianfarani, V Proto, G Di Zenzo, B Didona, G Zambruno, D Castiglia
Recessive mutations in the LAMA3A, LAMB3 and LAMC2 genes coding for laminin-332 (α3aβ3γ2) chains cause different junctional epidermolysis bullosa (JEB) subtypes. Biallelic truncating mutations in any of the three genes usually lead to lack of protein expression resulting in the severe generalized JEB subtype, while missense or splicing mutations in at least one allele lead to reduced expression typical of generalized intermediate or localized JEB. Here, we molecularly characterized an adult JEB patient showing negative skin staining for the anti-β3 chain mAb K140...
May 31, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28552268/characterization-of-bip-protein-of-g-lamblia-as-a-potential-immunogen-in-a-mouse-infection-model
#18
Gloria Lopez-Romero, Thania Garzon, Raul Rascon, Alejandra Valdez, Jael Quintero, Aldo A Arvizu-Flores, Adriana Garibay-Escobar, Lucila Rascon, Humberto Astiazarán-García, Carlos Velazquez
Giardia lamblia is a protozoan parasite that causes one of the most common gastrointestinal diseases worldwide. To eliminate the parasite from the host intestine, it is necessary the activation of B-cell and T-cell dependent mechanisms. The knowledge about Giardia antigens that can stimulate the host immune response is limited. Recently, it has been described the Binding Immunoglobulin Protein (BIP) of G. lamblia (71kDa) as a potential immunogen. Additionally, our group has identified a highly immunogenic antigen (5G8 protein) of G...
August 2017: Immunobiology
https://www.readbyqxmd.com/read/28550415/high-expression-of-grp78-bip-as-a-novel-predictor-of-favorable-outcomes-in-patients-with-advanced-thymic-carcinoma
#19
Yosuke Miura, Kyoichi Kaira, Reiko Sakurai, Hisao Imai, Yoshio Tomizawa, Noriaki Sunaga, Koichi Minato, Takeshi Hisada, Tetsunari Oyama, Masanobu Yamada
BACKGROUND: Glucose-regulated protein (GRP) 78/immunoglobulin heavy chain binding protein (BiP) is a member of the endoplasmic reticulum chaperone family, and its role in various types of human malignancies has recently been investigated. However, the clinicopathological characteristics of GRP78/BiP in advanced thymic carcinoma (ATC) remain unknown. We aimed to examine the relationship between GRP78/BiP expression and the clinical outcomes of ATC patients. METHODS: Thirty-four patients with ATC receiving combination chemotherapy at three institutions between April 1998 and April 2014 were enrolled in this study...
May 26, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28541519/reduced-sleep-during-social-isolation-leads-to-cellular-stress-and-induction-of-the-unfolded-protein-response-upr
#20
Marishka K Brown, Ewa Strus, Nirinjini Naidoo
Study Objectives: Social isolation has a multitude of negative consequences on human health including the ability to endure challenges to the immune system, sleep amount and efficiency, and general morbidity and mortality. These adverse health outcomes are conserved in other social species. In the fruit fly Drosophila melanogaster, social isolation leads to increased aggression, impaired memory and reduced amounts of daytime sleep. There is a correlation between molecules affected by social isolation and those implicated in sleep in Drosophila...
May 25, 2017: Sleep
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