2026-03-24 九州大学
図1. 本研究のイメージ図
＜関連情報＞
- https://www.kyushu-u.ac.jp/ja/researches/view/1443
- https://www.kyushu-u.ac.jp/f/65201/26_0324_01.pdf
- https://www.sciencedirect.com/science/article/pii/S0305440326000671
骨から堆積物へ：野外遺跡から発見された古代人類のDNA From bones to sediments: Ancient human DNA from open-air archaeological sites
Rikai Sawafuji, Ryohei Sawaura, Masaki Yokoo, Toshiaki Kumaki, N. August Thomasen, Takumi Tsutaya, Mikkel Winther Pedersen
Journal of Archaeological Science Available online: 17 March 2026
DOI:https://doi.org/10.1016/j.jas.2026.106537
Highlights
- Human mitochondrial DNA can be recovered from sediments surrounding human remains at open-air sites.
- Archaeological context influences the likelihood of recovering human DNA from sediments.
- Human DNA from sediments enables non-destructive screening and introduces new ethical challenges.
Abstract
Most ancient human bones degrade and eventually disappear over time, especially in regions with acidic soils, making it challenging to obtain genetic information from past populations. As a consequence, there is currently an overrepresentation of ancient human data for certain regions of the world in contrast to others. To explore alternative sources, we analyzed ancient DNA from sediment samples collected from a burial site and a settlement site in Japan, both dating to around 1000 years ago. We found that ancient human mitochondrial DNA can be obtained from sediments surrounding bones, particularly close to rib bones, while human DNA was rarely detected in the settlement site sediments. Furthermore, the mitochondrial haplogroups identified in the sediments were identical to those from human bones, confirming the reliability of this approach. Our findings suggest that genetic information about past human populations can be directly obtained from archaeological sediments in open-air sites. This method also provides a non-destructive alternative to bones and teeth, expanding possibilities for ancient DNA research in regions where skeletal remains are poorly preserved.
