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Related Experiment Video

Updated: Jun 19, 2025

A Spin-Tip Enrichment Strategy for Simultaneous Analysis of N-Glycopeptides and Phosphopeptides from Human Pancreatic Tissues
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A Tip-Based Workflow for Sensitive IMAC-Based Low Nanogram Level Phosphoproteomics.

Chia-Feng Tsai1, Chuan-Chih Hsu2, Yi-Ting Wang1

  • 1Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|July 25, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a new phosphoproteomics method that reduces sample loss during nanoscale analysis. This technique enables more sensitive and high-throughput phosphoproteomics measurements.

Keywords:
Immobilized metal ion affinity chromatography (IMAC)Isobaric labelingMass spectrometryNanoscalePhosphoproteomeSingle celliBASIL

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Area of Science:

  • Proteomics
  • Biochemistry
  • Analytical Chemistry

Background:

  • Nanoscale phosphoproteomics faces challenges with sample loss due to surface adsorption during phosphopeptide enrichment.
  • Low stoichiometric phosphopeptides are particularly susceptible to loss, hindering sensitive analysis.

Purpose of the Study:

  • To develop a novel sample preparation method for nanoscale phosphoproteomics that minimizes sample loss.
  • To enhance the sensitivity and throughput of phosphoproteomics measurements.

Main Methods:

  • A tandem tip-based phosphoproteomics sample preparation method was developed for sequential cleanup and enrichment.
  • The method integrates with surfactant-assisted one-pot sample preparation (SOP) and improved boosting to amplify signal with isobaric labeling (iBASIL).
  • This approach avoids additional sample transfer steps to reduce sample loss.

Main Results:

  • The tandem tip method significantly minimizes sample loss during phosphopeptide enrichment.
  • The integrated workflow enables sensitive and high-throughput nanoscale phosphoproteomics.
  • This advancement facilitates more comprehensive phosphoproteome analysis.

Conclusions:

  • The developed tandem tip-based method offers a streamlined workflow for nanoscale phosphoproteomics.
  • This technique effectively addresses the challenge of sample loss, improving analytical sensitivity and throughput.
  • The method paves the way for more robust and efficient phosphoproteome studies.