A novel integrated extraction protocol for multi-omic studies in heavily degraded samples

Area of Science:

• Biochemistry
• Molecular Biology
• Biotechnology

Background:

• Multi-omic techniques (genomics, transcriptomics, proteomics, metabolomics, epigenomics) have transformed medical research.
• These methods aid in biomarker discovery, pathway elucidation, and drug target identification.
• Current limitations exist in integrating omic datasets due to a lack of unified extraction protocols.

Purpose of the Study:

• To develop and validate a minimally destructive, integrated protocol for simultaneous extraction of multiple biomolecules.
• To enable comprehensive analysis from limited or degraded biological samples.
• To overcome challenges in multi-omic data integration caused by univariate noise and varied distributions.

Main Methods:

• A novel, minimally destructive integrated protocol was developed for simultaneous extraction of DNA, proteins, lipids, and metabolites.
• An MTBE-based approach was utilized for lipid and metabolite separation, followed by DNA and protein isolation.
• The protocol was validated against standalone extraction methods using pig brain samples.

Main Results:

• The integrated protocol successfully extracted all four biomolecule classes (DNA, proteins, lipids, metabolites) simultaneously.
• Yields for all extracted biomolecules were comparable or higher than those obtained from standalone protocols.
• The method demonstrated effectiveness on artificially degraded samples, preserving sample integrity.

Conclusions:

• This integrated extraction protocol is the first to simultaneously isolate four key biomolecules.
• The protocol facilitates sample preservation and enhances downstream multi-omic data integration.
• It offers a valuable tool for advancing medical research by reducing bias and improving analytical efficiency.