PXD047029

PXD047029 is an original dataset announced via ProteomeXchange.

Title	Targeted mass spectrometry analyses of somatic mutations in colorectal cancer specimens using differential ion mobility
Description	Identification of K-Ras and B-Raf mutations in colorectal cancer (CRC) is essential to predict patients' response to anti-EGFR therapy and formulate appropriate therapeutic strategies to improve prognosis and survival. Here, we combined parallel reaction monitoring (PRM) with high-field asymmetric waveform ion mobility (FAIMS) to enhance mass spectrometry sensitivity and improve the identification of low-abundance K-Ras and B-Raf mutations in biological samples without immunoaffinity enrichment. In targeted LC-MS/MS analyses, FAIMS reduced the occurrence of interfering ions and enhanced precursor ion purity, resulting in a three-fold improvement in the detection limit for K-Ras and B-Raf mutated peptides. In addition, ion mobility separation of isomeric peptides using FAIMS facilitated the unambiguous identification of K-Ras G12D and G13D peptides. The application of targeted LC-MS/MS analyses using FAIMS is demonstrated for the detection and quantitation of B-Raf V600E, K-Ras G12D, G13D, and G12V in CRC cell lines and primary specimens.
HostingRepository	PRIDE
AnnounceDate	2023-11-20
AnnouncementXML	Submission_2023-11-20_04:52:55.879.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Eric Bonneil
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	Orbitrap Exploris 480

Revision	Datetime	Status	ChangeLog Entry
0	2023-11-16 13:01:21	ID requested
⏵ 1	2023-11-20 04:52:56	announced

Dataset with its publication pending

submitter keyword: mass spectrometry, parallel reaction monitoring (PRM), BRAF,High field asymmetric waveform ion mobility (FAIMS), colorectal cancer mutations, KRAS

Pierre Thibault
contact affiliation	IRIC-Université de Montréal
contact email	pierre.thibault@umontreal.ca
lab head
Eric Bonneil
contact affiliation	Proteomic Platform
contact email	eric.bonneil@umontreal.ca
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2023/11/PXD047029

PRIDE project URI

• PRIDE
  1. PXD047029
     1. Label: PRIDE project
     2. Name: Targeted mass spectrometry analyses of somatic mutations in colorectal cancer specimens using differential ion mobility