Abstract：
:Secreted proteins play a key role in cell signaling, communication, and migration. We recently described the development of an aggressive variant (T24M) of the bladder cancer cell line T24. Using this cell line model, the objective of our work was the identification of secreted proteins involved in the acquisition of the aggressive phenotype. Using in vitro assays, we demonstrate that conditioned media of the T24M cells promote motility of the parental less aggressive T24 cells. Proteomic analysis of cell culture conditioned media by the use of 2-dimensional gel electrophoresis coupled to MALDI TOF MS and LC-MS approaches resulted in enrichment and detection of multiple classical extracellular and secreted proteins such as fibronectin, cystatin, fibrillin, fibulin, interleukin 6, etc. Comparison of the secretome of the T24 and T24M cells indicated differences in proteins with potential involvement in the mechanisms of cell aggressiveness including SPARC, tPA, and clusterin. These findings were further confirmed by Western blot analysis. In the case of SPARC, further studies involving transwell assays indicated that blockage of the protein in the presence of SPARC-specific Abs results in decreased cell motility. Collectively, our study provides a 2DE-based comprehensive analysis of bladder cancer cell secretome. The results indicate various secreted proteins with potential involvement in bladder cancer cell aggressiveness and more specifically provide initial evidence for special role of SPARC in bladder cancer cell motility and invasiveness.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Makridakis M,Roubelakis MG,Bitsika V,Dimuccio V,Samiotaki M,Kossida S,Panayotou G,Coleman J,Candiano G,Anagnou NP,Vlahou Adoi
10.1021/pr100189dsubject
Has Abstractpub_date
2010-06-04 00:00:00pages
3243-59issue
6eissn
1535-3893issn
1535-3907journal_volume
9pub_type
杂志文章abstract：:Polygalacturonase inhibiting proteins (PGIPs) are members of the leucine rich repeat family of proteins, involved in plant defense against fungal pathogens. PGIPs exhibit a remarkable degree of specificity in terms of their ability to bind and inhibit their target molecules, the endopolygalacturonases (EPGs). This spe...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800855f
更新日期：2009-02-01 00:00:00
abstract：:The fungal pathogen Fusarium graminearum (telomorph Gibberella zeae) is the causal agent of several destructive crop diseases. Identifying interactions among F. graminearum proteins and understanding their functions can provide insights into pathogenic mechanisms underlying F. graminearum-host interactions. F. gramine...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr900415b
更新日期：2009-10-01 00:00:00
abstract：:Cripto is one of the key regulators of embryonic stem cells (ESCs) differentiation into cardiomyocites vs neuronal fate. Cripto(-/-) murine ESCs have been utilized to investigate the molecular mechanisms underlying early events of mammalian lineage differentiation. 2D/LC-MS/MS and a label-free LC-MS approaches were us...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800485c
更新日期：2009-02-01 00:00:00
abstract：:Amyotrophic lateral sclerosis (ALS) is characterized by the absence of reliable diagnostic biomarkers. The aim of the study was to (i) devise an untargeted metabolomics methodology that reliably compares cerebrospinal fluid (CSF) from ALS patients and controls by liquid chromatography coupled to high-resolution mass s...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr400376e
更新日期：2013-08-02 00:00:00
abstract：:Almond, as a part of the nut family, is an important source of biological compounds, and specifically, almond skins have been considered an important source of polyphenols, including flavan-3-ols and flavonols. Polyphenol metabolism may produce several classes of metabolites that could often be more biologically activ...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr100639v
更新日期：2010-11-05 00:00:00
abstract：:Ovarian granulosa cell tumors (GCTs) are hormonally active cancers characterized by indolent growth and late, invasive relapse. No therapies have yet proven to be efficacious. We previously reported that the inhibition of the antiapoptotic X-linked inhibitor of apoptosis protein (XIAP) removes transrepression of the p...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.8b00917
更新日期：2019-04-05 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.0c00822
更新日期：2021-01-04 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr060278b
更新日期：2006-09-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.9b00774
更新日期：2020-07-02 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr300878y
更新日期：2013-02-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800649s
更新日期：2009-01-01 00:00:00
abstract：:Nostoc punctiforme ATCC 29133 is a photoautotrophic cyanobacterium with the capacity to fix atmospheric N 2. Its ability to mediate this process is similar to that described for Nostoc sp. PCC 7120, where vegetative cells differentiate into heterocysts. Quantitative proteomic investigations at both the filament level ...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800285v
更新日期：2009-01-01 00:00:00
abstract：:In shotgun proteomics analysis, user-specified parameters are critical to database search performance and therefore to the yield of confident peptide-spectrum matches (PSMs). Two of the most important parameters are related to the accuracy of the mass spectrometer. Precursor mass tolerance defines the peptide candidat...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00028
更新日期：2017-04-07 00:00:00
abstract：:Proteins are continuously exposed to diverse chemical stresses, and the resulting chemical modifications can provide significant information on biological events. Keratins are the main constituent of human skin and are the major target proteins of various chemical modifications. We have previously developed a mass spe...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.0c00406
更新日期：2020-09-04 00:00:00
abstract：:Membrane proteins play a critical role in the process of neural stem cell self-renewal and differentiation. Here, we apply the SILAC (stable isotope labeling by amino acids in cell culture) approach to quantitatively compare the membrane proteome of the self-renewing and the astroglial differentiating cells. High-reso...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr200677z
更新日期：2012-02-03 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b01031
更新日期：2016-07-01 00:00:00
abstract：:14-3-3s are phosphoserine/phosphotreonine binding proteins that play pivotal roles as regulators of multiple cellular processes in eukaryotes. The flagellated protozoan parasite Giardia duodenalis, the causing agent of giardiasis, is a valuable simplified eukaryotic model. A single 14-3-3 isoform (g14-3-3) is expresse...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr3000199
更新日期：2012-05-04 00:00:00
abstract：:Human embryonic stem cells (hESCs) are promising in regenerative medicine (RM) due to their differentiation plasticity and proliferation potential. However, a major challenge in RM is the generation of a vascular system to support nutrient flow to newly synthesized tissues. Here we refined an existing method to genera...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00180
更新日期：2016-06-03 00:00:00
abstract：:Hypoxia is present in most solid tumors and is clinically correlated with increased metastasis and poor patient survival. While studies have demonstrated the role of hypoxia and hypoxia-regulated proteins in cancer progression, no attempts have been made to identify hypoxia-regulated proteins using quantitative proteo...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr401056c
更新日期：2014-05-02 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr900918h
更新日期：2010-03-05 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr070106u
更新日期：2008-01-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr8003024
更新日期：2008-10-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00144
更新日期：2015-05-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00784
更新日期：2018-03-02 00:00:00
abstract：:Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer among women worldwide. It is confirmed mainly by fine-needle aspiration biopsy (FNAB), an invasive diagnostic method. The key proteins responsible for thyroid hormone biosynthesis are glycosylated. Hence, changes in site-specific glycosylation...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.9b00672
更新日期：2020-07-02 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800507x
更新日期：2009-01-01 00:00:00
abstract：:In recent years, proteomic data have contributed to genome annotation efforts, most notably in humans and mice, and spawned a field termed "proteogenomics". Yeast, in contrast with higher eukaryotes, has a small genome, which has lent itself to simpler ORF prediction. Despite this, continual advances in mass spectrome...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.5b00734
更新日期：2015-12-04 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr201048c
更新日期：2012-03-02 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr034124x
更新日期：2004-05-01 00:00:00
abstract：:Tropomyosins (Tm) constitute a family of ubiquitous and highly conserved actin-binding proteins, playing essential roles in a variety of biological processes. Tm isoforms produced by multiple Tm encoding genes and alternatively expressed exons along with post-translational modifications (PTMs) regulate Tm function. Th...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr301054n
更新日期：2013-01-04 00:00:00
