keyword
MENU ▼
Read by QxMD icon Read
search

V protein

keyword
https://www.readbyqxmd.com/read/29161753/improving-the-efficacy-of-proteasome-inhibitors-in-the-treatment-of-renal-cell-carcinoma-by-combination-with-the-hiv-protease-inhibitors-lopinavir-or-nelfinavir
#1
Dominik Abt, Andrej Besse, Lenka Sedlarikova, Marianne Kraus, Juergen Bader, Tobias Silzle, Martina Vodinska, Ondrej Slaby, Hans-Peter Schmid, Daniel Stephan Engeler, Christoph Driessen, Lenka Besse
OBJECTIVES: To assess the potential of second-generation proteasome inhibition by carfilzomib and its combination with the HIV-protease inhibitors (HIV-PIs) lopinavir and nelfinavir in vitro for improved treatment of clear cell renal cell cancer (ccRCC). MATERIALS AND METHODS: Cytotoxicity, reactive oxygen species (ROS) production and unfolded protein response (UPR) activation of proteasome inhibitors, HIV-PIs and their combination was assessed in 3 cell lines and primary cells derived from 3 ccRCC tumors by MTS assay, flow cytometry, quantitative PCR and western blot, respectively...
November 21, 2017: BJU International
https://www.readbyqxmd.com/read/29160692/s100a9-protein-aggregates-boost-hippocampal-glutamate-modifying-monoaminergic-neurochemistry-a-glutamate-antibody-sensitive-outcome-on-alzheimer-like-memory-decline
#2
Marina A Gruden, Tatiana V Davydova, Vladimir S Kudrin, Chao Wang, Victor B Narkevich, Ludmilla A Morozova-Roche, Robert D E Sewell
Alzheimer's disease (AD) involves dementia conceivably arising from integrated inflammatory processes, amyloidogenesis and neuronal apoptosis. Glutamate can also cause neuronal death via excitotoxicity and this is similarly implicated in some neurological diseases. The aim was to examine treatment with in vitro generated pro-inflammatory protein S100A9 aggregate species alone or with glutamate antibodies (Glu-Abs) on Morris water maze (MWM) spatial learning and memory performance in 12-month old mice. Amino acid and monoamine cerebral neurotransmitter metabolic changes were concurrently monitored...
November 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29160564/functional-differences-in-transport-properties-of-natural-hkt1-1-variants-influence-shoot-na-exclusion-in-grapevine-rootstocks
#3
Sam W Henderson, Jake D Dunlevy, Yue Wu, Deidre H Blackmore, Rob R Walker, Everard J Edwards, Matthew Gilliham, Amanda R Walker
Under salinity, Vitis spp. rootstocks can mediate salt (NaCl) exclusion from grafted V. vinifera scions enabling higher grapevine yields and production of superior wines with lower salt content. Until now, the genetic and mechanistic elements controlling sodium (Na(+) ) exclusion in grapevine were unknown. Using a cross between two Vitis interspecific hybrid rootstocks, we mapped a dominant quantitative trait locus (QTL) associated with leaf Na(+) exclusion (NaE) under salinity stress. The NaE locus encodes six high-affinity potassium transporters (HKT)...
November 21, 2017: New Phytologist
https://www.readbyqxmd.com/read/29160309/structure-of-pink1-in-complex-with-its-substrate-ubiquitin
#4
Alexander F Schubert, Christina Gladkova, Els Pardon, Jane L Wagstaff, Stefan M V Freund, Jan Steyaert, Sarah L Maslen, David Komander
Autosomal recessive juvenile Parkinsonism (AR-JP) is caused by mutations in a number of PARK genes, in particular in the E3 ubiquitin ligase Parkin (PARK2), and in its upstream protein kinase PINK1 (PARK6). PINK1 phosphorylates ubiquitin and the Parkin ubiquitin-like domain on structurally protected Ser65 to trigger mitophagy. We here report a crystal structure of a nanobody-stabilised complex between Pediculus humanus corporis (Ph)PINK1 with ubiquitin in the 'C-terminally retracted' (Ub-CR) conformation. The structure reveals many peculiarities of PINK1, including the architecture of the C-terminal region, and reveals how the PINK1 N-lobe binds ubiquitin via a unique insertion...
October 30, 2017: Nature
https://www.readbyqxmd.com/read/29159981/understanding-the-metabolic-burden-of-recombinant-antibody-production-in-saccharomyces-cerevisiae-using-a-quantitative-metabolomics-approach
#5
Jorg C de Ruijter, Essi V Koskela, Jatin Nandania, Alexander D Frey, Vidya Velagapudi
The cellular changes induced by heterologous protein expression in the yeast Saccharomyces cerevisiae have been analyzed on many levels and found to be significant. However, even though high-level protein production poses a metabolic burden, evaluation of the expression host at the level of the metabolome has often been neglected. We present a comparison of metabolite profiles of a wild-type strain with those of three strains producing recombinant antibody variants of increasing size and complexity: a scFv fragment, a scFv-Fc fusion protein, and a full-length IgG molecule...
November 20, 2017: Yeast
https://www.readbyqxmd.com/read/29159831/design-and-development-of-low-cost-polyurethane-biopolymer-based-on-castor-oil-and-glycerol-for-biomedical-applications
#6
A C W Tan, B J Polo-Cambronell, E Provaggi, C Ardila-Suárez, G E Ramirez-Caballero, V G Baldovino-Medrano, D M Kalaskar
In the current study, we present the synthesis of novel low cost bio-polyurethane compositions with variable mechanical properties based on castor oil and glycerol for biomedical applications. A detailed investigation of the physicochemical properties of the polymer was carried out by using mechanical testing, ATR-FTIR, and X-ray photoelectron spectroscopy (XPS). Polymers were also tested in short term in-vitro cell culture with human mesenchymal stem cells to evaluate their biocompatibility for potential applications as biomaterial...
November 21, 2017: Biopolymers
https://www.readbyqxmd.com/read/29159365/novel-stool-based-protein-biomarkers-for-improved-colorectal-cancer-screening-a-case-control-study
#7
Linda J W Bosch, Meike de Wit, Thang V Pham, Veerle M H Coupé, Annemieke C Hiemstra, Sander R Piersma, Gideon Oudgenoeg, George L Scheffer, Sandra Mongera, Jochim Terhaar Sive Droste, Frank A Oort, Sietze T van Turenhout, Ilhame Ben Larbi, Joost Louwagie, Wim van Criekinge, Rene W M van der Hulst, Chris J J Mulder, Beatriz Carvalho, Remond J A Fijneman, Connie R Jimenez, Gerrit A Meijer
Background: The fecal immunochemical test (FIT) for detecting hemoglobin is used widely for noninvasive colorectal cancer (CRC) screening, but its sensitivity leaves room for improvement. Objective: To identify novel protein biomarkers in stool that outperform or complement hemoglobin in detecting CRC and advanced adenomas. Design: Case-control study. Setting: Colonoscopy-controlled referral population from several centers...
November 21, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/29159256/cirrhosis-of-liver-interference-of-serpins-in-quantification-of-serpina4-a-preliminary-study
#8
Krishna Sumanth Nallagangula, K N Shashidhar, V Lakshmaiah, C Muninarayana
Background: Cirrhosis of liver is a pathological condition, wherein functions of liver are impaired by chronic liver exploitations. Due to decrease in synthetic capacity, expressions of plasma proteins tend to decrease in blood stream. Serpins (Serine protease inhibitors) are class of plasma proteins expressed from liver with structural similarities and diverse functions. SERPINA4 (Kallistatin) is a multifunctional serpin clade A protein expressed from liver and concentration in serum is the reflection of extent of liver dysfunction...
December 2017: Pract Lab Med
https://www.readbyqxmd.com/read/29158795/mismatch-repair-protein-hmlh1-but-not-hmsh2-enhances-estrogen-induced-apoptosis-of-colon-cancer-cells
#9
Peng Jin, De-Zhi Wang, Chen-Xi Lyu, Ya-Ting Wang, Yu-Qi He, Jian-Qiu Sheng, Xuhang Li
BACKGROUND: Epidemiological studies suggest a protective role of estrogen against colon carcinogenesis; this effect appears to be dependent on mismatch repair (MMR) status. However, the underlying mechanism remains unclear. This study investigated the role of MMR proteins in apoptosis of colon cancer cells in the presence or absence of estrogen. METHODS: Two major MMR proteins, human mutL homolog 1 (hMLH1) and mutS homolog 2 (hMSH2), as well as estrogen receptor-β (ERβ), were transiently expressed in either hMLH1-deficient HCT116 cells or hMSH2-deficient LoVo cells...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29158627/development-of-transcriptome-based-web-genomic-resources-of-yellow-mosaic-disease-in-vigna-mungo
#10
Rahul Singh Jasrotia, Mir Asif Iquebal, Pramod Kumar Yadav, Neeraj Kumar, Sarika Jaiswal, U B Angadi, Anil Rai, Dinesh Kumar
Vigna mungo (Urdbean) is cultivated in the tropical and sub-tropical continental region of Asia. It is not only important source of dietary protein and nutritional elements, but also of immense value to human health due to medicinal properties. Yellow mosaic disease caused by Mungbean Yellow Mosaic India Virus is known to incur huge loss to crop, adversely affecting crop yield. Contrasting genotypes are ideal source for knowledge discovery of plant defence mechanism and associated candidate genes for varietal improvement...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158541/dysregulation-of-mitochondrial-function-and-biogenesis-modulators-in-adipose-tissue-of-obese-children
#11
R Zamora-Mendoza, H Rosas-Vargas, M T Ramos-Cervantes, P Garcia-Zuniga, H Perez-Lorenzana, P Mendoza-Lorenzo, A Perez-Ortiz, J Estrada, A Miliar-Garcia, E Lara-Padilla, G Ceballos, A Rodriguez, F Villarreal, I Ramirez-Sanchez
BACKGROUND/OBJECTIVES: We aimed to evaluate mitochondrial biogenesis (MB), structure, metabolism, and dysfunction in abdominal adipose tissue from male pediatric patients with obesity. SUBJECTS/METHODS: Samples were collected from five children with obesity (percentile ⩾95) and five eutrophic boys (percentile ⩾5/⩽85) (8-12 years old) following parental informed consent. We analyzed the expression of key genes involved in MB (SIRT1, PPARγ, PGC1α, NRF1, NRF2, and TFAM) and surrogates for mitochondrial function/structure/metabolism (porin, TOMM20, complex I and V, UCP1, UCP2, SIRT3, SOD2) by Western blot...
November 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29158515/a-programmed-cell-division-delay-preserves-genome-integrity-during-natural-genetic-transformation-in-streptococcus-pneumoniae
#12
Matthieu J Bergé, Chryslène Mercy, Isabelle Mortier-Barrière, Michael S VanNieuwenhze, Yves V Brun, Christophe Grangeasse, Patrice Polard, Nathalie Campo
Competence for genetic transformation is a differentiation program during which exogenous DNA is imported into the cell and integrated into the chromosome. In Streptococcus pneumoniae, competence develops transiently and synchronously in all cells during exponential phase, and is accompanied by a pause in growth. Here, we reveal that this pause is linked to the cell cycle. At least two parallel pathways impair peptidoglycan synthesis in competent cells. Single-cell analyses demonstrate that ComM, a membrane protein induced during competence, inhibits both initiation of cell division and final constriction of the cytokinetic ring...
November 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/29158402/structural-insights-into-enzymatic-4-2-aza-cycloaddition-in-thiopeptide-antibiotic-biosynthesis
#13
Dillon P Cogan, Graham A Hudson, Zhengan Zhang, Taras V Pogorelov, Wilfred A van der Donk, Douglas A Mitchell, Satish K Nair
The [4+2] cycloaddition reaction is an enabling transformation in modern synthetic organic chemistry, but there are only limited examples of dedicated natural enzymes that can catalyze this transformation. Thiopeptides (or more formally thiazolyl peptides) are a class of thiazole-containing, highly modified, macrocyclic secondary metabolites made from ribosomally synthesized precursor peptides. The characteristic feature of these natural products is a six-membered nitrogenous heterocycle that is assembled via a formal [4+2] cycloaddition between two dehydroalanine (Dha) residues...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158386/cholesterol-binding-site-of-the-influenza-m2-protein-in-lipid-bilayers-from-solid-state-nmr
#14
Matthew R Elkins, Jonathan K Williams, Martin D Gelenter, Peng Dai, Byungsu Kwon, Ivan V Sergeyev, Bradley L Pentelute, Mei Hong
The influenza M2 protein not only forms a proton channel but also mediates membrane scission in a cholesterol-dependent manner to cause virus budding and release. The atomic interaction of cholesterol with M2, as with most eukaryotic membrane proteins, has long been elusive. We have now determined the cholesterol-binding site of the M2 protein in phospholipid bilayers using solid-state NMR spectroscopy. Chain-fluorinated cholesterol was used to measure cholesterol proximity to M2 while sterol-deuterated cholesterol was used to measure bound-cholesterol orientation in lipid bilayers...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158328/prolines-in-transit-peptides-are-crucial-for-efficient-preprotein-translocation-into-chloroplasts
#15
Dong Wook Lee, Yun-Joo Yoo, Md Abdur Razzak, Inhwan Hwang
Chloroplasts import many preproteins that can be classified based on their physicochemical properties. The cleavable N-terminal transit peptide (TP) of chloroplast preproteins contains all of the information required for import into chloroplasts through Toc/Tic translocons. The question of whether and how the physicochemical properties of preproteins affect TP-mediated import into chloroplasts has not been elucidated. Here, we present evidence that proline residues in TP mediate efficient translocation through the chloroplast envelope membranes for proteins containing transmembrane domains (TMDs) or proteins prone to aggregation...
November 20, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29158273/revisiting-activation-of-and-the-mechanism-of-resistance-to-the-compound-iqg-607-in-mycobacterium-tuberculosis
#16
Bruno L Abbadi, Anne D Villela, Valnês S Rodrigues-Junior, Fernanda T Subtil, Pedro F Dalberto, Ana P S Pinheiro, Diógenes S Santos, Pablo Machado, Luiz A Basso, Cristiano V Bizarro
IQG-607 is a metal complex previously reported as a promising anti-TB drug against isoniazid (INH)-resistant strains of M. tuberculosis Unexpectedly, we found that INH-resistant clinical isolates were resistant to IQG-607. Spontaneous mutants resistant to IQG-607 were subjected to whole-genome sequencing and all sequenced colonies carried alterations in the katG gene. The katG(S315T) mutation was sufficient to confer resistance to IQG-607 in both MIC assays and inside macrophages. Moreover, overexpressing the InhA(S94A) protein caused IQG-607's resistance...
November 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29158242/mutations-in-sugar-nucleotide-synthesis-genes-restore-holdfast-polysaccharide-anchoring-to-caulobacter-crescentus-holdfast-anchor-mutants
#17
Gail G Hardy, Evelyn Toh, Cécile Berne, Yves V Brun
Attachment is essential for microorganisms to establish interactions with both biotic and abiotic surfaces. Stable attachment of Caulobacter crescentus to surfaces requires an adhesive polysaccharide holdfast, but the exact composition of holdfast is unknown. The holdfast is anchored to the cell envelope by outer membrane proteins HfaA, HfaB and HfaD. Holdfast anchor gene mutations result in holdfast shedding and reduced cell adherence. Translocation of HfaA and HfaD to the cell surface requires HfaB. The Wzx homolog, HfsF, is predicted to be a bacterial polysaccharide flippase...
November 20, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/29158205/a-molting-inhibiting-hormone-like-protein-from-pacific-white-shrimp-litopenaeus-vannamei-is-involved-in-immune-responses
#18
Hongliang Zuo, Jia Yuan, Shengwen Niu, Linwei Yang, Shaoping Weng, Jianguo He, Xiaopeng Xu
The molting-inhibiting hormones (MIHs) from the crustacean hyperglycemic hormone (CHH) family are a group of neuropeptides that are implicated in regulation of molting and reproduction in crustaceans. In this study, a novel protein containing a typical crustacean neuropeptide domain was identified from Litopenaeus vannamei. The protein showed high homology with other shrimp MIHs and was then designated as a MIH-like protein (MIHL). Among the detected tissues, the heart expressed the highest level of MIHL. The expression of MIHL could be significantly up-regulated after infection with white spot syndrome virus (WSSV), gram-negative bacterium Vibro parahaemolyticus and gram-positive bacterium Staphylococcus aureus, indicating that MIHL could be involved in immune responses...
November 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29158190/prevalence-of-microsatellite-instability-in-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#19
R M Lupinacci, A Goloudina, O Buhard, J B Bachet, R Maréchal, P Demetter, J Cros, A Bardier-Dupas, A Collura, P Cervera, A Scriva, S Dumont, P Hammel, A Sauvanet, C Louvet, J-R Delpéro, F Paye, J-C Vaillant, T André, J Closset, J-F Emile, J-L Van Laethem, V Jonchère, I Abd Alsamad, M Antoine, A Rodenas, J F Fléjou, N Dusetti, J Iovanna, A Duval, M Svrcek
Microsatellite instability (MSI) due to mismatch repair deficiency (dMMR) is detected in a small proportion of pancreatic ductal adenocarcinomas (PDACs). dMMR and MSI have been associated with responses of metastatic tumors, including PDACs, to immune checkpoint inhibitor therapy. We performed immunohistochemical analyses of a 445 PDAC specimens, collected from consecutive patients at multiple centers, to identify those with dMMR, based on loss of mismatch repair proteins MLH1, MSH2, MSH6, and/or PMS2. We detected dMMR in 1...
November 17, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29158129/mitochondrial-transfer-between-cells-methodological-constraints-in-cell-culture-and-animal-models
#20
M V Berridge, P M Herst, M R Rowe, R Schneider, M J McConnell
Interest in the recently discovered phenomenon of mitochondrial transfer between mammalian cells has gained momentum since it was first described in cell culture systems more than a decade ago. Mitochondria-targeting fluorescent dyes have been repurposed and are now widely used in these studies and in acute disease models, sometimes without due consideration of their limitations, while vectors containing mitochondrially-imported fluorescent proteins have complemented the use of mitochondria-targeting dyes. Genetic approaches that use mitochondrial DNA polymorphisms have also been used in some in vitro studies and in tumor models and are particularly useful where mtDNA is damaged or deleted...
November 17, 2017: Analytical Biochemistry
keyword
keyword
75116
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"