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 pro-proliferative nuclear receptor, peroxisome proliferator-activated receptor (PPAR)-γ, in a GCT-derived cell line, KGN. Both PPARγ and XIAP are overexpressed in human GCT. The inhibition of XIAP with the restoration of PPARγ signaling using a SMAC-mimetic (Compound A (CmpdA)) and rosiglitazone (RGZ)/retinoic acid (RA), respectively, reduced cell proliferation and induced apoptosis in the KGN cells. Utilizing stable isotope labeling with amino acids in cell culture, we identified 32 differentially expressed proteins in the KGN cells following the CmpdA/RGZ/RA-treatment, 22 of which were upregulated by ≥1.5 fold. Of these, stearoyl-CoA desaturase (SCD; 4.5-fold induction) was examined for putative binding sites for PPARγ using in silico screening. Chromatin immunoprecipitation confirmed the direct binding of PPARγ on the promoter region of SCD, with increased binding in the CmpdA/RGZ/RA-treated KGN cells. Because PPARγ plays a pivotal role in lipid and glucose metabolism, the upregulation of proteins associated with metabolic processes such as SCD is consistent with the restoration of PPARγ activity.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Leung DTH,Rainczuk A,Nguyen T,Stephens A,Silke J,Fuller PJ,Chu Sdoi
10.1021/acs.jproteome.8b00917subject
Has Abstractpub_date
2019-04-05 00:00:00pages
1691-1702issue
4eissn
1535-3893issn
1535-3907journal_volume
18pub_type
杂志文章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
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doi：10.1021/pr301054n
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journal_title：Journal of proteome research
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doi：10.1021/pr200834f
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abstract：:Arabidopsis MAP kinase 4 (MPK4) has been proposed to be a negative player in plant immunity, and it is also activated by pathogen-associated molecular patterns (PAMPs), such as flg22. The molecular mechanisms by which MPK4 is activated and regulates plant defense remain elusive. In this study, we investigated Arabidop...
journal_title：Journal of proteome research
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更新日期：2019-03-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr500171u
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doi：10.1021/acs.jproteome.0c00778
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journal_title：Journal of proteome research
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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.0c00406
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journal_title：Journal of proteome research
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journal_title：Journal of proteome research
pub_type： 杂志文章
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更新日期：2016-07-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
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更新日期：2018-03-02 00:00:00
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journal_title：Journal of proteome research
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doi：10.1021/acs.jproteome.9b00552
更新日期：2020-01-03 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.9b00360
更新日期：2019-12-06 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00500
更新日期：2018-01-05 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr5010778
更新日期：2015-02-06 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00237
更新日期：2016-08-05 00:00:00
abstract：:Tandem mass spectrometry has become the method of choice for high-throughput, quantitative analysis in proteomics. Peptide spectrum matching algorithms score the concordance between the experimental and the theoretical spectra of candidate peptides by evaluating the number (or proportion) of theoretically possible fra...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.8b00499
更新日期：2019-06-07 00:00:00
abstract：:POPX2 is a serine/threonine phosphatase belonging to the protein phosphatase 2C (PP2C) family that has been found to be elevated in invasive breast cancer cells. Silencing of POPX2 results in lower cell motility and invasiveness. The molecular mechanism of POPX2-regulated cell motility is not well understood. To ident...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr301113c
更新日期：2013-06-07 00:00:00
abstract：:Recent physiological studies indicated that S. lividans metabolism was mainly glycolytic, whereas S. coelicolor metabolism was mainly oxidative. To determine whether such metabolic characteristics were correlated with consistent proteomics features, a comparative label-free, shotgun proteomics analysis of these strain...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00163
更新日期：2017-07-07 00:00:00
abstract：:Glutaredoxins (GRXs), small redox proteins that use reduced glutathione as an electron donor, are key components of the cellular antioxidant system. In this study, we used Saccharomyces cerevisiae as a model system to investigate the effects of GRX deletion on yeast chronological life span (CLS). Deletion of either Gr...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.8b00012
更新日期：2018-07-06 00:00:00
abstract：:Molecular imaging of tissue by MALDI mass spectrometry is a powerful tool for visualizing the spatial distribution of constituent analytes with high molecular specificity. Although the technique is relatively young, it has already contributed to the understanding of many diverse areas of human health. In recent years,...
journal_title：Journal of proteome research
pub_type： 杂志文章,评审
doi：10.1021/pr060346u
更新日期：2006-11-01 00:00:00
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journal_title：Journal of proteome research
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doi：10.1021/acs.jproteome.9b00334
更新日期：2019-11-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr070525r
更新日期：2008-02-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00639
更新日期：2018-03-02 00:00:00
abstract：:Decoy database searches are used to filter out false positive protein identifications derived from search engines, but there is no consensus about which decoy is "the best". We evaluate nine different decoy designs using public data sets from samples of known composition. Statistically significant performance differen...
journal_title：Journal of proteome research
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doi：10.1021/pr800792z
更新日期：2009-04-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr700685e
更新日期：2008-02-01 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
abstract：:Secondary to the increased survival following chemotherapy, brain metastases have recently become a significant clinical problem for breast cancer patients. The aim of this study was to characterize those functional phenotypes that might enhance brain metastasis in breast cancer cells. We first analyzed by two-dimensi...
journal_title：Journal of proteome research
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更新日期：2008-03-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr070239f
更新日期：2007-10-01 00:00:00
abstract：:Cytokinin hormones are crucial regulators of a large number of processes in plant development. Recently, significant progress has been made toward the elucidation of the molecular details of cytokinin that has led to a model for signal transduction involving a phosphorylation cascade. However, the current knowledge of...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr060152e
更新日期：2006-09-01 00:00:00
