Screening archaeological bone for palaeogenetic and palaeoproteomic studies

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Kontopoulos, Ioannis  ORCID logo
Penkman, Kirsty 
Mullin, Victoria E. 
Winkelbach, Laura 
Unterländer, Martina 

The recovery and analysis of ancient DNA and protein from archaeological bone is time-consuming and expensive to carry out, while it involves the partial or complete destruction of valuable or rare specimens. The fields of palaeogenetic and palaeoproteomic research would benefit greatly from techniques that can assess the molecular quality prior to sampling. To be relevant, such screening methods should be effective, minimally-destructive, and rapid. This study reports results based on spectroscopic (Fourier-transform infrared spectroscopy in attenuated total reflectance [FTIR-ATR]; n = 266), palaeoproteomic (collagen content; n = 226), and palaeogenetic (endogenous DNA content; n = 88) techniques. We establish thresholds for three different FTIR indices, a) the infrared splitting factor [IRSF] that assesses relative changes in bioapatite crystals’ size and homogeneity; b) the carbonate-to-phosphate [C/P] ratio as a relative measure of carbonate content in bioapatite crystals; and c) the amide-to-phosphate ratio [Am/P] for assessing the relative organic content preserved in bone. These thresholds are both extremely reliable and easy to apply for the successful and rapid distinction between well- and poorly-preserved specimens. This is a milestone for choosing appropriate samples prior to genomic and collagen analyses, with important implications for biomolecular archaeology and palaeontology.


Funder: FP7 Ideas: European Research Council; funder-id:; Grant(s): 295729

Research Article, Biology and life sciences, Earth sciences, Social sciences, Ecology and environmental sciences
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Public Library of Science
Alexander S. Onassis Public Benefit Foundation (F ZL 047-1/2015-2016)
A.G. Leventis Foundation (PhD scholarship)
The Greek Archaeological Committee UK (GACUK) (PhD scholarship)
Leverhulme Trust (PLP-2012-116)
Danmarks Grundforskningsfond (DNRF128)
Villum Fonden (10120)