PXD010934

PXD010934 is an original dataset announced via ProteomeXchange.

Title	Data-independent acquisition mass spectrometry to quantify protein levels in FFPE tumor biopsies for molecular diagnostics
Description	Mass spectrometry-based protein quantitation is currently used to measure therapeutically relevant protein biomarkers in CAP/CLIA setting to predict likely responses of known therapies. Selected reaction monitoring (SRM) is the method of choice due to its outstanding analytical performance. However, data-independent acquisition (DIA) is now emerging as a proteome-scale clinical assay. We evaluated the ability of DIA to profile the patient-specific proteomes of sample-limited tumor biopsies and to quantify proteins of interest in a targeted fashion using formalin-fixed, paraffin-embedded (FFPE) tumor biopsies (n=12) selected from our clinical laboratory. DIA analysis on the tumor biopsies provided 3,713 quantifiable proteins including actionable biomarkers currently in clinical use, successfully separated two gastric cancers from colorectal cancer specimen solely based on global proteomic profiles, and identified subtype-specific proteins with prognostic or diagnostic value. We demonstrate the potential use of DIA-based quantitation to inform therapeutic decision-making using TUBB3, for which clinical cut-off expression levels have been established by SRM. Comparative analysis of DIA-based proteomic profiles and mRNA expression levels found positively and negatively correlated protein-gene pairs, a finding consistent with previously reported results from fresh-frozen tumor tissues.
HostingRepository	PanoramaPublic
AnnounceDate	2019-10-22
AnnouncementXML	Submission_2019-10-22_10:24:49.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Steve Sweet
SpeciesList	scientific name: Homo sapiens; NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	Q Exactive HF

Revision	Datetime	Status	ChangeLog Entry
0	2018-08-29 10:00:04	ID requested
⏵ 1	2019-10-22 10:24:51	announced

Kim YJ, Sweet SMM, Egertson JD, Sedgewick AJ, Woo S, Liao WL, Merrihew GE, Searle BC, Vaske C, Heaton R, MacCoss MJ, Hembrough T, Data-Independent Acquisition Mass Spectrometry To Quantify Protein Levels in FFPE Tumor Biopsies for Molecular Diagnostics. J Proteome Res, 18(1):426-435(2019) [pubmed]

submitter keyword: FFPE

cancer

DIA;

Steve Sweet
contact affiliation	NantOmics
contact email	stephen.sweet@nantomics.com
lab head
Steve Sweet
contact affiliation	NantOmics
contact email	stephen.sweet@nantomics.com
dataset submitter

Panorama Public dataset URI