Abstract：
:In this report, we use a proteomic strategy to identify glycoproteins on the surface of exosomes derived from myeloid-derived suppressor cells (MDSCs), and then test if selected glycoproteins contribute to exosome-mediated chemotaxis and migration of MDSCs. We report successful modification of a surface chemistry method for use with exosomes and identify 21 surface N-glycoproteins on exosomes released by mouse mammary carcinoma-induced MDSCs. These glycoprotein identities and functionalities are compared with 93 N-linked glycoproteins identified on the surface of the parental cells. As with the lysate proteomes examined previously, the exosome surface N-glycoproteins are primarily a subset of the glycoproteins on the surface of the suppressor cells that released them, with related functions and related potential as therapeutic targets. The "don't eat me" molecule CD47 and its binding partners thrombospondin-1 (TSP1) and signal regulatory protein α (SIRPα) were among the surface N-glycoproteins detected. Functional bioassays using antibodies to these three molecules demonstrated that CD47, TSP1, and to a lesser extent SIRPα facilitate exosome-mediated MDSC chemotaxis and migration.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Chauhan S,Danielson S,Clements V,Edwards N,Ostrand-Rosenberg S,Fenselau Cdoi
10.1021/acs.jproteome.6b00811subject
Has Abstractpub_date
2017-01-06 00:00:00pages
238-246issue
1eissn
1535-3893issn
1535-3907journal_volume
16pub_type
杂志文章abstract：:One application of 2D gel electrophoresis is to reveal differences in protein pattern between two or more groups of individuals, attributable to their group membership. Multivariate data analytical methods are useful in pinpointing the spots relevant for discrimination by focusing not only on single spot differences, ...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr700800s
更新日期：2008-03-01 00:00:00
abstract：:Glycans play major roles in living organisms. Thus, essential information is required on diverse glycans, their location, and moieties in proteins, as well as for technology in a high-throughput manner, for improving functional glycomics. In the present study, we describe a new approach involving a 2-D array, which ha...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr070392+
更新日期：2008-03-01 00:00:00
abstract：:Liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based proteomic methods have been widely used to identify lysine acylation proteins. However, these experimental approaches often fail to detect proteins that are in low abundance or absent in specific biological samples. To circumvent these problems, we develo...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00240
更新日期：2016-12-02 00:00:00
abstract：:The role played by the degree of folding of protein backbones in explaining the binding energetics of protein-ligand interactions has been studied. We analyzed the protein/peptide interactions in the RNase-S system in which amino acids at two positions of the peptide S have been mutated. The global degree of folding o...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr0503174
更新日期：2006-01-01 00:00:00
abstract：:Glycosylation has significant effects on protein function and cell metastasis, which are important in cancer progression. It is of great interest to identify site-specific glycosylation in search of potential cancer biomarkers. However, the abundance of glycopeptides is low compared to that of nonglycopeptides after t...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00068
更新日期：2015-04-03 00:00:00
abstract：:Gene-encoded antimicrobial peptides (AMPs) kill bacteria very efficiently by either lytic mechanisms or inhibition of specific bacterial targets. Proline-rich AMPs (PrAMPs), for example, produced in insects and mammals rely on the second mechanism. They bind to the 70 kDa bacterial heat shock protein DnaK and the 60 k...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00283
更新日期：2015-08-07 00:00:00
abstract：:Growing appreciation for astrocytes as active participants in nervous system development, neurovascular metabolic coupling, and neurological disease progression has stimulated recent investigation into specific astrocyte-secreted proteins that may mediate these functions. The current work utilized SILAC-generated isot...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr100134n
更新日期：2010-05-07 00:00:00
abstract：:Protein phosphatase 1 (PP1) catalytic subunits typically combine with other proteins that modulate their activity, direct them to distinct substrates, or serve as substrates for PP1. More than 50 PP1-interacting proteins (PIPs) have been identified so far. Given there are approximately 10 000 phosphoproteins in mammal...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr060504h
更新日期：2007-03-01 00:00:00
abstract：:Linear, short-chain polyfluorinated and perfluorinated alkyl compounds, often referred to as PFCs, have been in worldwide use as surfactants and polymer precursors for decades, and environmental dispersal of these highly persistent compounds represents a public health threat. Whereas ubiquitous low-level exposure to t...
journal_title：Journal of proteome research
pub_type： 杂志文章,评审
doi：10.1021/pr500990w
更新日期：2015-01-02 00:00:00
abstract：:A key step in mass spectrometry (MS)-based proteomics is the identification of peptides in sequence databases by their fragmentation spectra. Here we describe Andromeda, a novel peptide search engine using a probabilistic scoring model. On proteome data, Andromeda performs as well as Mascot, a widely used commercial s...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr101065j
更新日期：2011-04-01 00:00:00
abstract：:The domain graph of domains and domain combinations of Arabidopsis thaliana is established based on pfam 14.0 database and analyzed via comparison with 10 eukaryotic, 30 bacterial, and 16 archaeal proteomes. The comparative analysis of the domain graphs provides a useful platform for revealing global insights on the e...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr049805m
更新日期：2005-03-01 00:00:00
abstract：:Blood is an ideal window for viewing our health and disease status. Because blood circulates throughout the entire body and carries secreted, shed, and excreted signature proteins from every organ and tissue type, it is thus possible to use the blood proteome to achieve a comprehensive assessment of multiple-organ phy...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr301178a
更新日期：2013-05-03 00:00:00
abstract：:Normozoospermic infertility has become a common and important health problem worldwide. We designed this metabolomic case-control study to investigate the possible mechanism and urinary biomarkers of normozoospermic infertility. Normozoospermic infertile cases (n = 71) and fertile controls (n = 47) were recruited. A u...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr5003142
更新日期：2014-06-06 00:00:00
abstract：:Epithelial ovarian carcinoma has in general a poor prognosis since the vast majority of tumors are genomically unstable and clinically highly aggressive. This results in rapid progression of malignancy potential while still asymptomatic and thus in late diagnosis. It is therefore of critical importance to develop meth...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr201258q
更新日期：2012-05-04 00:00:00
abstract：:The field of computational proteomics is approaching the big data age, driven both by a continuous growth in the number of samples analyzed per experiment as well as by the growing amount of data obtained in each analytical run. In order to process these large amounts of data, it is increasingly necessary to use elast...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.9b00328
更新日期：2020-01-03 00:00:00
abstract：:To decrease the mortality of lung cancer, better screening and diagnostic tools as well as treatment options are needed. Protein glycosylation is one of the major post-translational modifications that is altered in cancer, but it is not exactly clear which glycan structures are affected. A better understanding of the ...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00255
更新日期：2015-11-06 00:00:00
abstract：:The application of a data-independent acquisition (DIA) method ("SONAR") that employs a rapidly scanning quadrupole is described for the lipidomic analysis of complex biological extracts. Using this approach, the MS acquisition window can be varied between 1 and 25 Da, enabling the isolation of ions prior to their ent...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.9b00334
更新日期：2019-11-01 00:00:00
abstract：:Hepatitis C virus (HCV) causes chronic liver disease worldwide. HCV Core protein (Core) forms the viral capsid and is crucial for HCV pathogenesis and HCV-induced hepatocellular carcinoma, through its interaction with the host factor proteasome activator PA28γ. Here, using BD-PowerBlot high-throughput Western array, w...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr300121a
更新日期：2012-07-06 00:00:00
abstract：:Sexual dimorphism is initialed by the components of the sex determination pathway and is most evident in gonads and germ cells. Although striking dimorphic expressions have been detected at the transcriptional level between the silkworm larval testis and the ovary, the sex-dimorphic expressions at the protein level ha...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr300920z
更新日期：2013-06-07 00:00:00
abstract：:Colon cancer is the most common cancer and the third leading cause of cancer mortality in humans. Using mass spectrometry-based metabolomics, the current study revealed the accumulation of four uremic toxins (cresol sulfate, cresol glucuronide, indoxyl sulfate, and phenyl sulfate) in the serum of mice harboring adenom...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr5013152
更新日期：2015-04-03 00:00:00
abstract：:Snake venoms are biological weapon systems composed of secreted proteins and peptides that are used for immobilizing or killing prey. Although post-translational modifications are widely investigated because of their importance in many biological phenomena, we currently still have little understanding of how protein g...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00217
更新日期：2016-08-05 00:00:00
abstract：:Adipose tissue is a major storage site for lipophilic environmental contaminants. The environmental metabolic disruptor hypothesis postulates that some pollutants can promote obesity or metabolic disorders by activating nuclear receptors involved in the control of energetic homeostasis. In this context, monoethylhexyl...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr200765v
更新日期：2011-12-02 00:00:00
abstract：:During the development of cancer, changes in cellular glycosylation are observed, indicating that alterations of the glycome occur in extracellular fluids as well as in serum and could therefore serve as tumor biomarkers. In the case of epithelial ovarian cancer (EOC), common tumor markers such as CA125 are known to h...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr400405x
更新日期：2013-09-06 00:00:00
abstract：:Tryptic digestion of biotinylated Lys-C peptides followed by affinity chromatography allows the selective isolation of lysine-free tryptic peptides delimited by arginine residues (RRnK peptides). In silico analysis revealed that RRnK peptides represent 87% of the whole proteomes and their specific isolation simplifies...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr060003w
更新日期：2006-05-01 00:00:00
abstract：:"Omics" studies reported to date have dealt with either thoroughly characterized single species or poorly explored meta-microbial communities. However, these techniques are capable of producing highly informative data for the analysis of interactions between two organisms. We examined the bacterial interaction between...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr100989c
更新日期：2011-02-04 00:00:00
abstract：:The Lewis x (Le(x)) structure (Galβ1-4(Fucα1-3)GlcNAc-R) is a carbohydrate epitope comprising the stage-specific embryonic antigen-1 (SSEA-1) and CD15, and it is synthesized by α1,3-fucosyltransferase 9 (Fut9). Fut9 is expressed specifically in the stomach, kidney, brain, and in leukocytes, suggesting a specific funct...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00178
更新日期：2015-09-04 00:00:00
abstract：:An efficient means for the identification of prognostic and predictive biomarkers is essential in today's cancer management. A new approach toward biomarker discovery has therefore been proposed, where pathways instead of individual proteins would be monitored and targeted. Recently, the 'secretome', a biological flui...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr8008572
更新日期：2009-03-01 00:00:00
abstract：:High-resolution proton nuclear magnetic resonance (NMR) spectrometry of biofluids has been increasingly used in laboratory diagnosis of various diseases. In this study, we extended the use of (1)H NMR spectroscopy for laboratory diagnosis of exudative pleural effusions using pleural fluids. We compared this new NMR-ba...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr5004856
更新日期：2014-09-05 00:00:00
abstract：:The Chromosome-Centric Human Proteome Project (C-HPP) aims to identify "missing" proteins in the neXtProt knowledgebase. We present an in-depth proteomics analysis of the human sperm proteome to identify testis-enriched missing proteins. Using protein extraction procedures and LC-MS/MS analysis, we detected 235 protei...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00400
更新日期：2016-11-04 00:00:00
abstract：:Porcine reproductive and respiratory syndrome virus (PRRSV) is a major threat to the swine industry worldwide and hence global food security, exacerbated by a newly emerged highly pathogenic (HP-PRRSV) strain from China. PRRSV nonstructural protein 2 (nsp2) is a multifunctional polypeptide with strain-dependent influe...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00396
更新日期：2016-05-06 00:00:00
