A Semiautomated Proteomics and Phosphoproteomics Protocol for the Identification of Novel Therapeutic Targets and Predictive Biomarkers in In Vivo Xenograft Models of Pediatric Cancers

Terry CC Lim Kam Sian, Christie Sun, Jason E Cain, Joel R Steele, Iresha Hanchapola, Stoyan Stoychev, Ralf B Schittenhelm, Pouya Faridi

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Otherpeer-review

1 Citation (Scopus)

Abstract

Genomic profiling has identified therapeutic targets for precision treatment of certain cancers, but many patients lack actionable mutations. Additional omics approaches, like proteomics and phosphoproteomics, are essential for comprehensive mapping of cancer-associated molecular phenotypes. In vivo models, such as cell line and patient-derived xenografts (PDX), offer valuable insights into cancer biology and treatment strategies.This chapter presents a semiautomated high-throughput workflow for integrated proteomics and phosphoproteomics analysis on the Kingfish platform coupled with MagReSyn® Zr-IMAC HP. It enhances protein extraction from in vivo xenograft samples and provides better insights into cancers with poor prognosis. The approach successfully identified over 11,000 unique phosphosites and ~6000 proteins in SJSA-1 pediatric osteosarcoma xenografts, demonstrating its efficacy. This workflow is a valuable tool for studying tumor biology and developing precision oncology strategies.

Original languageEnglish
Title of host publicationPatient-Derived Xenografts
Subtitle of host publicationMethods and Protocols
EditorsMohamed I. Saad
Place of PublicationNew York NY USA
PublisherHumana Press
Chapter17
Pages229-242
Number of pages14
ISBN (Electronic)9781071638583
ISBN (Print)9781071638576
DOIs
Publication statusPublished - 2024

Publication series

NameMethods in Molecular Biology
Volume2806
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Automation
  • High-throughput
  • Mass spectrometry
  • Patient-derived xenograft
  • Phosphoproteomics
  • Proteomics

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