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Proteomes

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https://www.readbyqxmd.com/read/30424486/paraquat-mediated-oxidative-stress-in-anopheles-gambiae-mosquitoes-is-regulated-by-an-endoplasmic-reticulum-er-stress-response
#1
Brian B Tarimo, Henry Chun Hin Law, Dingyin Tao, Rebecca Pastrana-Mena, Stefan M Kanzok, Joram J Buza, Rhoel R Dinglasan
Paraquat is a potent superoxide (O₂- )-inducing agent that is capable of inducing an oxidative imbalance in the mosquito midgut. This oxidative imbalance can super-stress the malaria parasite, leading to arrested development in the mosquito midgut and reduced transmission. While several studies have explored the effect of paraquat on malaria parasites, a fundamental understanding of the mosquito response to this compound remains unknown. Here, we quantified the mosquito midgut proteomic response to a paraquat-laced sugar meal, and found that An...
November 12, 2018: Proteomes
https://www.readbyqxmd.com/read/30424485/deep-profiling-of-the-aggregated-proteome-in-alzheimer-s-disease-from-pathology-to-disease-mechanisms
#2
REVIEW
Brianna M Lutz, Junmin Peng
Hallmarks of Alzheimer's disease (AD), a progressive neurodegenerative disease causing dementia, include protein aggregates such as amyloid beta plaques and tau neurofibrillary tangles in a patient's brain. Understanding the complete composition and structure of protein aggregates in AD can shed light on the as-yet unidentified underlying mechanisms of AD development and progression. Biochemical isolation of aggregates coupled with mass spectrometry (MS) provides a comprehensive proteomic analysis of aggregates in AD...
November 12, 2018: Proteomes
https://www.readbyqxmd.com/read/30404163/a-comparative-quantitative-lc-ms-ms-profiling-analysis-of-human-pancreatic-adenocarcinoma-adjacent-normal-tissue-and-patient-derived-tumour-xenografts
#3
Orla Coleman, Michael Henry, Fiona O'Neill, Sandra Roche, Niall Swan, Lorraine Boyle, Jean Murphy, Justine Meiller, Neil T Conlon, Justin Geoghegan, Kevin C Conlon, Vincent Lynch, Ninfa L Straubinger, Robert M Straubinger, Gerard McVey, Michael Moriarty, Paula Meleady, Martin Clynes
Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest cancers worldwide; it develops in a relatively symptom-free manner, leading to rapid disease progression and metastasis, leading to a 5-year survival rate of less than 5%. A lack of dependable diagnostic markers and rapid development of resistance to conventional therapies are among the problems associated with management of the disease. A better understanding of pancreatic tumour biology and discovery of new potential therapeutic targets are important goals in pancreatic cancer research...
November 6, 2018: Proteomes
https://www.readbyqxmd.com/read/30347783/inhibiting-arginine-methylation-as-a-tool-to-investigate-cross-talk-with-methylation-and-acetylation-post-translational-modifications-in-a-glioblastoma-cell-line
#4
Sabrina Francesca Samuel, Alistair James Marsden, Srihari Deepak, Francisco Rivero, John Greenman, Pedro Beltran-Alvarez
Glioblastomas (GBM) are the most common grade 4 brain tumours; patients have very poor prognosis with an average survival of 15 months after diagnosis. Novel research lines have begun to explore aberrant protein arginine methylation (ArgMe) as a possible therapeutic target in GBM and ArgMe inhibitors are currently in clinical trials. Enzymes known as protein arginine methyltransferases (PRMT1-9) can lead to mono- or di-ArgMe, and in the latter case symmetric or asymmetric dimethylation (SDMA and ADMA, respectively)...
October 20, 2018: Proteomes
https://www.readbyqxmd.com/read/30340394/identification-of-potential-plasma-biomarkers-for-abdominal-aortic-aneurysm-using-tandem-mass-tag-quantitative-proteomics
#5
Anders E Henriksson, Markus Lindqvist, Carina Sihlbom, Jörgen Bergström, Dan Bylund
Plasma biomarkers that identify abdominal aortic aneurysm (AAA) rupture risk would greatly assist in stratifying patients with small aneurysms. Identification of such biomarkers has hitherto been unsuccessful over a range of studies using different methods. The present study used an alternative proteomic approach to find new, potential plasma AAA biomarker candidates. Pre-fractionated plasma samples from twelve patients with AAA and eight matched controls without aneurysm were analyzed by mass spectrometry applying a tandem mass tag (TMT) technique...
October 18, 2018: Proteomes
https://www.readbyqxmd.com/read/30326594/evaluation-of-the-phosphoproteome-of-mouse-alpha-4-beta-2-containing-nicotinic-acetylcholine-receptors-in-vitro-and-in-vivo
#6
Megan B Miller, Rashaun S Wilson, TuKiet T Lam, Angus C Nairn, Marina R Picciotto
Activation of nicotinic acetylcholine receptors containing α4 and β2 subunits (α4/β2* nAChRs) in the mammalian brain is necessary for nicotine reinforcement and addiction. We previously identified interactions between α4/β2* nAChRs and calcium/calmodulin-dependent protein kinase II (CaMKII) in mouse and human brain tissue. Following co-expression of α4/β2 nAChR subunits with CaMKII in HEK cells, mass spectrometry identified 8 phosphorylation sites in the α4 subunit. One of these sites and an additional site were identified when isolated α4/β2* nAChRs were dephosphorylated and subsequently incubated with CaMKII in vitro, while 3 phosphorylation sites were identified following incubation with protein kinase A (PKA) in vitro...
October 15, 2018: Proteomes
https://www.readbyqxmd.com/read/30322021/phosphoproteomic-analysis-of-the-amygdala-response-to-adolescent-glucocorticoid-exposure-reveals-g-protein-coupled-receptor-kinase-2-as-a-target-for-reducing-motivation-for-alcohol
#7
Megan L Bertholomey, Kathryn Stone, TuKiet T Lam, Seojin Bang, Wei Wu, Angus C Nairn, Jane R Taylor, Mary M Torregrossa
Early life stress is associated with risk for developing alcohol use disorders (AUDs) in adulthood. Though the neurobiological mechanisms underlying this vulnerability are not well understood, evidence suggests that aberrant glucocorticoid and noradrenergic system functioning play a role. The present study investigated the long-term consequences of chronic exposure to elevated glucocorticoids during adolescence on the risk of increased alcohol-motivated behavior, and on amygdalar function in adulthood. A discovery-based analysis of the amygdalar phosphoproteome using mass spectrometry was employed, to identify changes in function...
October 12, 2018: Proteomes
https://www.readbyqxmd.com/read/30297624/phosphorylation-of-the-ampar-tarp-complex-in-synaptic-plasticity
#8
REVIEW
Joongkyu Park
Synaptic plasticity has been considered a key mechanism underlying many brain functions including learning, memory, and drug addiction. An increase or decrease in synaptic activity of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) complex mediates the phenomena as shown in the cellular models of synaptic plasticity, long-term potentiation (LTP), and depression (LTD). In particular, protein phosphorylation shares the spotlight in expressing the synaptic plasticity. This review summarizes the studies on phosphorylation of the AMPAR pore-forming subunits and auxiliary proteins including transmembrane AMPA receptor regulatory proteins (TARPs) and discusses its role in synaptic plasticity...
October 8, 2018: Proteomes
https://www.readbyqxmd.com/read/30301203/exploring-morphine-triggered-pkc-targets-and-their-interaction-with-signaling-pathways-leading-to-pain-via-trka
#9
REVIEW
Darlene A Pena, Mariana Lemos Duarte, Dimitrius T Pramio, Lakshmi A Devi, Deborah Schechtman
It is well accepted that treatment of chronic pain with morphine leads to μ opioid receptor (MOR) desensitization and the development of morphine tolerance. MOR activation by the selective peptide agonist, D-Ala2, N-MePhe4, Gly-ol]-enkephalin(DAMGO), leads to robust G protein receptor kinase activation, β-arrestin recruitment, and subsequent receptor endocytosis, which does not occur in an activation by morphine. However, MOR activation by morphine induces receptor desensitization, in a Protein kinase C (PKC) dependent manner...
October 6, 2018: Proteomes
https://www.readbyqxmd.com/read/30279377/early-responses-to-severe-drought-stress-in-the-arabidopsis-thaliana-cell-suspension-culture-proteome
#10
May Alqurashi, Marco Chiapello, Chantal Bianchet, Francesco Paolocci, Kathryn S Lilley, Christoph Gehring
Abiotic stresses are considered the most deleterious factor affecting growth and development of plants worldwide. Such stresses are largely unavoidable and trigger adaptive responses affecting different cellular processes and target different compartments. Shotgun proteomic and mass spectrometry-based approaches offer an opportunity to elucidate the response of the proteome to abiotic stresses. In this study, the severe drought or water-deficit response in Arabidopsis thaliana was mimicked by treating cell suspension callus with 40% polyethylene glycol for 10 and 30 min...
October 2, 2018: Proteomes
https://www.readbyqxmd.com/read/30274258/fyn-regulates-binding-partners-of-cyclic-amp-dependent-protein-kinase-a
#11
Anna M Schmoker, Samuel A Barritt, Marion E Weir, Jacqueline E Mann, Tyler C Hogan, Bryan A Ballif, Paula B Deming
The cAMP-dependent protein kinase A (PKA) is a serine/threonine kinase involved in many fundamental cellular processes, including migration and proliferation. Recently, we found that the Src family kinase Fyn phosphorylates the catalytic subunit of PKA (PKA-C) at Y69, thereby increasing PKA kinase activity. We also showed that Fyn induced the phosphorylation of cellular proteins within the PKA preferred target motif. This led to the hypothesis that Fyn could affect proteins in complex with PKA. To test this, we employed a quantitative mass spectrometry approach to identify Fyn-dependent binding partners in complex with PKA-C...
September 29, 2018: Proteomes
https://www.readbyqxmd.com/read/30249063/proteases-shape-the-chlamydomonas-secretome-comparison-to-classical-neuropeptide-processing-machinery
#12
Raj Luxmi, Crysten Blaby-Haas, Dhivya Kumar, Navin Rauniyar, Stephen M King, Richard E Mains, Betty A Eipper
The recent identification of catalytically active peptidylglycine α-amidating monooxygenase (PAM) in Chlamydomonas reinhardtii, a unicellular green alga, suggested the presence of a PAM-like gene and peptidergic signaling in the last eukaryotic common ancestor (LECA). We identified prototypical neuropeptide precursors and essential peptide processing enzymes (subtilisin-like prohormone convertases and carboxypeptidase B-like enzymes) in the C. reinhardtii genome. Reasoning that sexual reproduction by C. reinhardtii requires extensive communication between cells, we used mass spectrometry to identify proteins recovered from the soluble secretome of mating gametes, and searched for evidence that the putative peptidergic processing enzymes were functional...
September 23, 2018: Proteomes
https://www.readbyqxmd.com/read/30249060/granulocyte-colony-stimulating-factor-alters-the-proteomic-landscape-of-the-ventral-tegmental-area
#13
Nicholas L Mervosh, Rashaun Wilson, Navin Rauniyar, Rebecca S Hofford, Munir Gunes Kutlu, Erin S Calipari, TuKiet T Lam, Drew D Kiraly
Cocaine addiction is characterized by aberrant plasticity of the mesolimbic dopamine circuit, leading to dysregulation of motivation to seek and take drug. Despite the significant toll that cocaine use disorder exacts on society, there are currently no available pharmacotherapies. We have recently identified granulocyte-colony stimulating factor (G-CSF) as a soluble cytokine that alters the behavioral response to cocaine and which increases dopamine release from the ventral tegmental area (VTA). Despite these known effects on behavior and neurophysiology, the molecular mechanisms by which G-CSF affects brain function are unclear...
September 23, 2018: Proteomes
https://www.readbyqxmd.com/read/30231513/molecular-and-physiological-study-of-candida-albicans-by-quantitative-proteome-analysis
#14
REVIEW
Seiji Shibasaki, Miki Karasaki, Wataru Aoki, Mitsuyoshi Ueda
Candida albicans is one of the major pathogens that cause the serious infectious condition known as candidiasis. C. albicans was investigated by proteome analysis to systematically examine its virulence factors and to promote the development of novel pharmaceuticals against candidiasis. Here, we review quantitative time-course proteomics data related to C. albicans adaptation to fetal bovine serum, which were obtained using a nano-liquid chromatography/tandem mass spectrometry system equipped with a long monolithic silica capillary column...
September 18, 2018: Proteomes
https://www.readbyqxmd.com/read/30200480/detection-of-functional-overreaching-in-endurance-athletes-using-proteomics
#15
David C Nieman, Arnoud J Groen, Artyom Pugachev, Gianmarco Vacca
No reliable biomarkers exist to identify athletes in various training states including functional overreaching (FOR), non-functional overreaching (NFOR), and overtraining syndrome (OTS). Participants (N = 10, age 38.3 ± 3.4 years) served as their own controls and in random, counterbalanced order either ran/cycled 2.5 h (70.0 ± 3.7% VO2max ) three days in a row (FOR) or sat in the lab (rest) (separated by three weeks; 7:00⁻9:30 am, overnight fasted state). Participants provided fingerprick samples for dried blood spot samples (DBS) pre- and post-exercise/rest, and then during two recovery days...
September 1, 2018: Proteomes
https://www.readbyqxmd.com/read/30200280/proteomic-approaches-for-the-discovery-of-biofluid-biomarkers-of-neurodegenerative-dementias
#16
REVIEW
Becky C Carlyle, Bianca A Trombetta, Steven E Arnold
Neurodegenerative dementias are highly complex disorders driven by vicious cycles of intersecting pathophysiologies. While most can be definitively diagnosed by the presence of disease-specific pathology in the brain at postmortem examination, clinical disease presentations often involve substantially overlapping cognitive, behavioral, and functional impairment profiles that hamper accurate diagnosis of the specific disease. As global demographics shift towards an aging population in developed countries, clinicians need more sensitive and specific diagnostic tools to appropriately diagnose, monitor, and treat neurodegenerative conditions...
August 31, 2018: Proteomes
https://www.readbyqxmd.com/read/30071621/regional-diversity-in-the-postsynaptic-proteome-of-the-mouse-brain
#17
Marcia Roy, Oksana Sorokina, Colin McLean, Silvia Tapia-González, Javier DeFelipe, J Douglas Armstrong, Seth G N Grant
The proteome of the postsynaptic terminal of excitatory synapses comprises over one thousand proteins in vertebrate species and plays a central role in behavior and brain disease. The brain is organized into anatomically distinct regions and whether the synapse proteome differs across these regions is poorly understood. Postsynaptic proteomes were isolated from seven forebrain and hindbrain regions in mice and their composition determined using proteomic mass spectrometry. Seventy-four percent of proteins showed differential expression and each region displayed a unique compositional signature...
August 1, 2018: Proteomes
https://www.readbyqxmd.com/read/30029459/uncovering-discrete-synaptic-proteomes-to-understand-neurological-disorders
#18
REVIEW
Yi-Zhi Wang, Jeffrey N Savas
The mammalian nervous system is an immensely heterogeneous organ composed of a diverse collection of neuronal types that interconnect in complex patterns. Synapses are highly specialized neuronal cell-cell junctions with common and distinct functional characteristics that are governed by their protein composition or synaptic proteomes. Even a single neuron can possess a wide-range of different synapse types and each synapse contains hundreds or even thousands of proteins. Many neurological disorders and diseases are caused by synaptic dysfunction within discrete neuronal populations...
July 19, 2018: Proteomes
https://www.readbyqxmd.com/read/29933573/proteomic-analysis-of-histone-variants-and-their-ptms-strategies-and-pitfalls
#19
REVIEW
Sara El Kennani, Marion Crespo, Jérôme Govin, Delphine Pflieger
Epigenetic modifications contribute to the determination of cell fate and differentiation. The molecular mechanisms underlying histone variants and post-translational modifications (PTMs) have been studied in the contexts of development, differentiation, and disease. Antibody-based assays have classically been used to target PTMs, but these approaches fail to reveal combinatorial patterns of modifications. In addition, some histone variants are so similar to canonical histones that antibodies have difficulty distinguishing between these isoforms...
June 21, 2018: Proteomes
https://www.readbyqxmd.com/read/29933572/editorial-for-special-issue-2017-plant-proteomics
#20
EDITORIAL
Elisabeth Jamet, Véronique Santoni
No abstract text is available yet for this article.
June 21, 2018: Proteomes
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