Extraction of Histones from Clinical Specimens for Epigenetic Profiling by Mass Spectrometry

Overview

This protocol enables efficient histone extraction from clinical samples for post-translational modification analysis by LC-MS/MS. It facilitates robust detection of key histone modifications, serving as a valuable tool for comprehensive epigenetic profiling.

Key Study Components

Area of Science

• Epigenetics
• Histone modifications
• Mass spectrometry

Background

• Analyzing epigenetic changes in cancer samples.
• Discovering new diagnostic and prognostic biomarkers.
• Identifying potential therapeutic targets.
• Addressing challenges with limited material and fixation artifacts.

Purpose of Study

• To quantify histone post-translational modifications (PTMs) from clinical samples.
• To offer insights into epigenetic mechanisms.
• To enable biomarker discovery and drug target identification for precision therapies.

Methods Used

• Optimized workflow for histone extraction.
• High sensitivity mass spectrometry (MS) for quantification.
• Simultaneous profiling of multiple histone PTMs.
• Unbiased detection overcoming antibody-based method limitations.

Main Results

• Quantification of up to 50 histone PTMs from just 1000 cells.
• Mass spectrometry effectively detects histone PTM changes.
• Insights into epigenetic mechanisms related to cancer.
• Facilitated biomarker discovery and identification of drug targets.

Conclusions

• The protocol provides robust and sensitive profiling of histone PTMs.
• It is applicable to various types of clinical samples.
• Mass spectrometry is a powerful tool for epigenetic analysis.

Frequently Asked Questions