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ProteomicsA Novel High-Throughput Immunoaffinity LC-MS/MS Assay for P III-NP and other Fragments of Type III Procollagen in Human Serum
The amino-terminal propeptide of type III procollagen (P-III-NP) is used with IGF-I to detect the illicit use of growth hormone and to monitor growth hormone therapy. However, the only currently available assays for P-III-NP are immunoassays, which are not well harmonized. In addition, other fragmen...
ORGANISM(S): Homo Sapiens 
2024-10-28 | PXD052245 | panorama
ProteomicsMatrix-matched calibration curves
Mass spectrometry is a powerful tool for quantifying protein abundance in complex samples. Advances in sample preparation and the development of data independent acquisition (DIA) mass spectrometry approaches have increased the number of peptides and proteins measured per sample. However, methods to...
ORGANISM(S): Homo Sapiens Saccharomyces Cerevisiae 
2022-03-29 | PXD014815 | panorama
ProteomicsEvaluation of Linearity, Lower Limit of Measurement Interval and Imprecision
Introduction Glucagon and oxyntomodulin are peptide hormones differentially released from proglucagon that function in regulating blood glucose concentrations. Their overlapping amino acid sequences make the development of specific immunoassays difficult, but the specificity of liquid chromatography...
ORGANISM(S): Homo Sapiens 
2025-05-20 | PXD041410 | panorama
ProteomicsSingle-point Calibration
Mass spectrometry (MS) measurements are not inherently calibrated. Researchers use various calibration methods to assign meaning to arbitrary signal intensities and improve precision. Internal calibration (IC) methods use internal standards (IS) such as synthesized or recombinant proteins or peptide...
ORGANISM(S): Saccharomyces Cerevisiae 
2019-02-02 | PXD011297 | panorama
ProteomicsMetrologically traceable quantification of three apolipoprotein E isoforms in cerebrospinal fluid
Apolipoprotein E (apoE) is a 317-amino-acid long glycoprotein with three common isoforms (apoE2, apoE3, and apoE4) encoded by three apoE alleles (ε2, ε3, and ε4). These polymorphic forms arise from single amino acid substitutions with Cys and Arg interchanged at positions 112 and 158 (mature protein...
ORGANISM(S): Homo Sapiens 
2023-06-13 | PXD038803 | panorama
TranscriptomicsHDL suppresses the type I interferon response
Background: High density lipoprotein (HDL) protects the artery wall by removing cholesterol from lipid-laden macrophages. However, recent evidence suggests that it might also inhibit atherogenesis by combating inflammation. Methods and Results: To identify potential anti-inflammatory mechanisms, we ...
ORGANISM(S): Mus musculus 
2010-10-01 | E-GEOD-19340 | biostudies-arrayexpress
ProteomicsMag-Net: Rapid enrichment of membrane-bound particles enables high coverage quantitative analysis of the plasma proteome
Membrane-bound particles in plasma are composed of exosomes, microvesicles, and apoptotic bodies and represent ~1-2% of the total protein composition. Proteomic interrogation of this subset of plasma proteins augments the representation of tissue-specific proteins, representing a “liquid biopsy,” wh...
ORGANISM(S): Homo Sapiens 
2025-07-02 | PXD042947 | panorama
ProteomicsQuantification of HER2 by Immunopeptide Enrichment and Targeted Mass Spectrometry in Formalin-Fixed Paraffin-Embedded (FFPE) and Frozen Breast Cancer Tissues
Background: Conventional HER2-targeting therapies improve outcomes for patients with HER2-positive breast cancer (BC), defined as tumors showing HER2 protein overexpression by an immunohistochemistry (IHC) assay and/or ERBB2 gene amplification determined by in situ hybridization (ISH). Emerging HER2...
ORGANISM(S): Homo Sapiens 
2021-07-07 | PXD021893 | panorama
ProteomicsA framework for quality control in quantitative proteomics
A thorough evaluation of the quality, reproducibility, and variability of bottom-up proteomics data is necessary at every stage of a workflow, from planning to analysis. We share vignettes applying adaptable quality control (QC) measures to assess sample preparation, system function, and quantitativ...
ORGANISM(S): Homo Sapiens Mus Musculus Bos Taurus Saccharomyces Cerevisiae 
2024-10-01 | PXD051318 | panorama
ProteomicsProteogenomic analysis of chemo-refractory high grade serous ovarian cancer
To improve our understanding of the molecular basis of chemo-refractory high grade serous ovarian cancers (HGSOCs), we characterized the proteogenomic landscape of 242 (refractory and sensitive) HGSOCs, representing one discovery and two independent validation cohorts (spanning four academic centers...
ORGANISM(S): Homo Sapiens 
2023-09-18 | PXD040742 | panorama
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