Abstract:
:A brief period of ischemia followed by timely reperfusion may lead to prolonged, yet reversible, contractile dysfunction (myocardial stunning). Damage to the myocardium occurs not only during ischemia, but also during reperfusion, where a massive release of oxygen-free radicals (OFR) occurs. We have previously utilized 2-DE and MS to define 57 protein spot changes during brief ischemia/reperfusion (15 min ischemia, 60 min reperfusion; 15I/60R) injury in a rabbit model (White, M. Y., Cordwell, S. J., McCarron, H. C. K., Prasan, A. M. et al., Proteomics 2005, 5, 1395-1410) and shown that the majority of these occur because of physical and/or chemical PTMs. In this study, we subjected rabbit myocardium to 15I/60R in the presence of the OFR scavenger N-(2-mercaptopropionyl) glycine (MPG). Thirty-seven of 57 protein spots altered during 15I/60R remained at control levels in the presence of MPG (15I/60R + MPG). Changes to contractile proteins, including myosin light chain 2 (MLC-2) and troponin C (TnC), were prevented by the addition of MPG. To further investigate the individual effects of ischemia and reperfusion, we generated 2-DE gels from rabbit myocardium subjected to brief ischemia alone (15I/0R), and observed alterations of 33 protein spots, including 18/20 seen in both 15I/60R-treated and 15I/60R + MPG-treated tissue. The tissue was also subjected to ischemia in the presence of MPG (15I/0R + MPG), and 21 spot changes, representing 14 protein variants, remained altered despite the presence of the OFR scavenger. These ischemia-specific proteins comprised those involved in energy metabolism (lactate dehydrogenase and ATP synthase alpha), redox regulation (NADH ubiquinone oxidoreductase 51 kDa and GST Mu), and stress response (Hsp27 and 70, and deamidated alpha B-crystallin). We conclude that contractile dysfunction associated with myocardial stunning is predominantly caused by OFR damage at the onset of reperfusion, but that OFR-independent damage also occurs during ischemia. These ischemia-specific protein modifications may be indicative of early myocardial injury.
journal_name
Proteomicsjournal_title
Proteomicsauthors
White MY,Tchen AS,McCarron HC,Hambly BD,Jeremy RW,Cordwell SJdoi
10.1002/pmic.200600219subject
Has Abstractpub_date
2006-12-01 00:00:00pages
6221-33issue
23eissn
1615-9853issn
1615-9861journal_volume
6pub_type
杂志文章相关文献
PROTEOMICS文献大全abstract::The authors present pathwayPCA, an R/Bioconductor package for integrative pathway analysis that utilizes modern statistical methodology, including supervised and adaptive, elastic-net, sparse principal component analysis. pathwayPCA can be applied to continuous, binary, and survival outcomes in studies with multiple c...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201900409
更新日期:2020-11-01 00:00:00
abstract::The sodium (Na+ )-calcium (Ca2+ ) exchanger 1 (NCX1) is an antiporter membrane protein encoded by the SLC8A1 gene. In the heart, it maintains cytosolic Ca2+ homeostasis, serving as the primary mechanism for Ca2+ extrusion during relaxation. Dysregulation of NCX1 is observed in end-stage human heart failure. In this st...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201600417
更新日期:2017-09-01 00:00:00
abstract::Glycosylation is a widespread PTM of proteins; the carbohydrate moieties provide various functional, immunological and structural aspects of both eukaryotic and prokaryotic glycoproteins. Traditional strategies used to analyse glycoprotein O-glycans involve glycoprotein isolation, followed by glycan release using solu...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200500331
更新日期:2006-05-01 00:00:00
abstract::Ischemia/reperfusion (I/R) injury is a major consequence of a cardiovascular intervention. The study of changes of the left and right ventricle proteomes from hearts subjected to I/R may be a key to revealing the pathological mechanisms underlying I/R-induced heart contractile dysfunction. Isolated rat hearts were per...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201100604
更新日期:2012-08-01 00:00:00
abstract::Oligomeric ubiquitin structures (i.e. ubiquitin "chains") may be formed through any of seven different lysine residues in the polypeptide, or via the amine group of Met 1. Different types of ubiquitin chains can confer very different biological outcomes to a protein substrate, yet the structural characteristics of E2s...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201500058
更新日期:2015-09-01 00:00:00
abstract::The main goal of many proteomics experiments is an accurate and rapid quantification and identification of regulated proteins in complex biological samples. The bottleneck in quantitative proteomics remains the availability of efficient software to evaluate and quantify the tremendous amount of mass spectral data acqu...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200900174
更新日期:2010-01-01 00:00:00
abstract::Innovation in genomics, transcriptomics, and proteomics research has created a plethora of state-of-the-art techniques such as nucleic acid sequencing and mass-spectrometry-based proteomics with paramount impact in the life sciences. While current approaches yield quantitative abundance analysis of biomolecules on an ...
journal_title:Proteomics
pub_type: 杂志文章,评审
doi:10.1002/pmic.201900368
更新日期:2020-10-08 00:00:00
abstract::In this work, for the first time, perfluorinated magnetic mesoporous microspheres were designed and synthesized for the highly specific enrichment of fluorous-derivatized phosphopeptides through the unique fluorine-fluorine interactions. The perfluorinated magnetic mesoporous microspheres were prepared through a surfa...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201500323
更新日期:2016-04-01 00:00:00
abstract::Head and neck cancers, including oral squamous cell carcinoma (OSCC), are the sixth most common malignancy in the world and are characterized by poor prognosis and a low survival rate. Saliva is oral fluid with intimate contact with OSCC. Besides non-invasive, simple, and rapid to collect, saliva is a potential source...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201500224
更新日期:2016-01-01 00:00:00
abstract::As an abundant ROS, hydrogen peroxide (H2 O2 ) plays pivotal roles in plant growth and development. In this work, we conducted for the first time an iTRAQ-based quantitative proteomic analysis of wheat seedling growth under different exogenous H2 O2 treatments. The growth of seedlings and roots was significantly restr...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201300042
更新日期:2013-10-01 00:00:00
abstract::We previously reported that NSC606985, a new camptothecin analog, induces apoptosis of acute myeloid leukemic cells, which is triggered by proteolytic activation of protein kinase C delta (PKC delta). Here, we performed quantitative proteomic analysis of NSC606985-treated and untreated leukemic U937 cells with two-dim...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200800031
更新日期:2009-04-01 00:00:00
abstract::Proteomic technologies are being used to discover and identify disease-associated biomarkers. The application of these technologies in the search for potential diagnostic/prognostic biomarkers in the serum of patients has been limited by the presence of highly abundant albumin and immunoglobulins that constitute appro...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200300465
更新日期:2003-10-01 00:00:00
abstract::A simple and rapid method for characterizing hydrophobic integral membrane proteins and its utility for membrane proteomics using microcapillary liquid chromatography coupled on-line with tandem mass spectrometry (microLC-MS/MS) is described. The present technique does not rely on the use of detergents, strong organic...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200300543
更新日期:2004-01-01 00:00:00
abstract::The Ser/Thr/Tyr phosphoproteome of Bacillus subtilis was analyzed by a 2-D gel-based approach combining Pro-Q Diamond staining and [(33)P]-labeling. In exponentially growing B. subtilis cells 27 proteins could be identified after staining with Pro-Q Diamond and/or [(33)P]-labeling and one additional protein was labele...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200700232
更新日期:2007-10-01 00:00:00
abstract::Simpson-Golabi-Behmel syndrome (SGBS) is an X-linked condition shown to be the result of deletions of the glypican-3 (GPC3) gene. GPC3 is a proteoglycan localized to the cell membrane via a glycosylphosphatidyl-inositol (GPI) anchor. To further elucidate the GPC3 function(s), we have screened various cell lines for pr...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200600654
更新日期:2007-06-01 00:00:00
abstract::The last 30 years Enterococcus faecium has become an important nosocomial pathogen in hospitals worldwide. The aim of this study was to obtain insight in the cell surface proteome of E. faecium when grown in laboratory and clinically relevant conditions. Enterococcus faecium E1162, a clinical blood stream isolate, was...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201500138
更新日期:2015-11-01 00:00:00
abstract::High-affinity molecular pairs provide a convenient and flexible modular base for the design of molecular probes and protein/antigen assays. Specificity and sensitivity performance indicators of a bioassay critically depend on the dissociation constant (K(D)) of the molecular pair, with avidin:biotin being the state-of...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201200491
更新日期:2013-05-01 00:00:00
abstract::The endothelium is a single layer of cells lining the inside face of all blood vessels. It constitutes a major metabolic organ which is critically involved in the generation and the regulation of multiple physiological and pathological processes such as coagulation, hemostasis, inflammation, atherosclerosis, angiogene...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200300409
更新日期:2003-05-01 00:00:00
abstract::Plant cell wall-degrading enzymes produced by microorganisms possess important biotechnological applications, including biofuel production. Some anaerobic bacteria are able to produce multienzymatic complexes called cellulosomes while filamentous fungi normally secrete individual hydrolytic enzymes that act synergisti...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201200048
更新日期:2012-08-01 00:00:00
abstract::Exosomes are deliverers of critically functional proteins, capable of transforming target cells in numerous cancers, including hepatocellular carcinoma (HCC). We hypothesize that the motility of HCC cells can be featured by comparative proteome of exosomes. Hence, we performed the super-SILAC-based MS analysis on the ...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201700103
更新日期:2017-07-01 00:00:00
abstract::We introduce a new methodology named ligand profiling and identification for effective discovery of bioactive ligands such as peptide hormones. This technology was developed from a new concept of parallel column chromatography and active fraction profiling by nano-LC MS. Traditional methods use sequential column chrom...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200500511
更新日期:2006-03-01 00:00:00
abstract::Surface-enhanced laser desorption/ionization (SELDI) time of flight (TOF) is a mass spectrometry technology for measuring the composition of a sampled protein mixture. A mass spectrum contains peaks corresponding to proteins in the sample. The peak areas are proportional to the measured concentrations of the correspon...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200600181
更新日期:2006-10-01 00:00:00
abstract::Leukaemic transformation is frequently associated with the aberrant activity of a protein tyrosine kinase (PTK). As such it is of clinical relevance to be able to map the effects of these leukaemogenic PTKs on haemopoietic cells at the level of phosphorylation modulation. In this paradigm study we have employed a rang...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201000176
更新日期:2010-09-01 00:00:00
abstract::The presence of high-abundance proteins in complex protein mixtures often masks low-abundance proteins and causes loss of resolution of 2DE. Protein fractionation steps conducted prior to 2DE can enhance the detection of low-abundance proteins and improve the resolution of 2DE. Here, we report a method to prefractiona...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201100475
更新日期:2012-04-01 00:00:00
abstract::The field of biochemistry is currently faced with the enormous challenge of assigning functional significance to more than thirty thousand predicted protein products encoded by the human genome. In order to accomplish this daunting task, methods will be required that facilitate the global analysis of proteins in compl...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/1615-9861(200109)1:9<1067::AID-PROT1067>3.
更新日期:2001-09-01 00:00:00
abstract::Sporozoites of the malaria parasite Plasmodium are transmitted by mosquitoes and infect the liver for an initial and obligatory round of replication, before exponential multiplication in the blood and onset of the disease. Sporozoites and liver stages provide attractive targets for malaria vaccines and prophylactic dr...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.202000305
更新日期:2021-01-16 00:00:00
abstract::The current treatment for glioblastoma includes temozolomide (TMZ) chemotherapy, yet the mechanism of action of TMZ is not thoroughly understood. Here, we investigated the TMZ-induced changes in the proteome of the glioma-derived cell line (U251) by 2D DIGE. We found 95 protein spots to be significantly altered in the...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.201200261
更新日期:2013-07-01 00:00:00
abstract::Antibiotics disturb the physiological homeostasis of bacterial cells by interfering with essential cellular functions or structures. The bacterial proteome adjusts quickly in response to antibiotic challenge. This physiological response is specifically tailored to overcome the inflicted damage and, thus, closely linke...
journal_title:Proteomics
pub_type: 杂志文章,评审
doi:10.1002/pmic.201100046
更新日期:2011-08-01 00:00:00
abstract::Heat shock proteins (HSPs) are crucial for the maintenance of cell integrity during normal cellular growth as well as during pathophysiological conditions. While functioning mainly as molecular chaperones, HSPs also appear to be involved in diverse biological activities, such as apoptosis, carcinogenesis, and cytoprot...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200400951
更新日期:2004-11-01 00:00:00
abstract::We report on a novel strategy for identification of specific sulfation motifs in chondroitin/dermatan sulfate (CS/DS) chain derived from decorin (Dcn), based on enzyme cleavage and multistage MS (MS(n)). Released CS/DS chains were digested with chondroitin B and in parallel with AC I lyases to obtain oligosaccharides ...
journal_title:Proteomics
pub_type: 杂志文章
doi:10.1002/pmic.200800440
更新日期:2009-07-01 00:00:00