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Minimizing Laboratory-Induced Decay in Bone Proteomics.

Noemi Procopio¹, Michael Buckley¹

¹Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester M1 7DN, U.K.

Journal of Proteome Research

|February 4, 2017

Summary

This summary is machine-generated.

This study optimized protein extraction from ancient bone, significantly reducing artificial decay. The new method enhances proteomic analysis for archaeological, palaeontological, and forensic science applications.

Keywords:

bone proteome deamidation forensics post-mortem interval shotgun proteomics

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Area of Science:

Archaeoproteomics
Palaeoproteomics
Forensic Proteomics

Background:

Proteomics is vital for analyzing ancient bone, aiding species identification and understanding bone diagenesis.
Current protein extraction methods do not adequately minimize laboratory-induced decay, particularly deamidation of asparagine and glutamine, which complicates decay analysis.

Purpose of the Study:

To develop an optimized protein extraction method for archaeological and palaeontological bone.
To minimize artificial deamidation during protein extraction, preserving natural decay signatures.

Main Methods:

Tested various extraction protocols to identify an optimal approach.
Employed partial demineralization with weak acid, followed by incubation with guanidine hydrochloride and enzymatic digestion.

Main Results:

Achieved an approximately 50% reduction in deamidation compared to standard methods.
Significantly decreased the overall protocol length for protein extraction.

Conclusions:

The optimized method minimizes artificial decay, making it suitable for accurate proteomic studies of ancient bone.
This approach can enhance archaeological, palaeontological, and forensic investigations by utilizing decay measurements as 'molecular timers'.