Photo Credit: Nash Dunn, NC State University.
Scientific Frontline: Extended "At a Glance" Summary: Nondestructive Genetic Analysis of Historical Parchments
The Core Concept: A novel, nondestructive methodology utilizing dry cytology brushes to extract cellular and genetic material from ancient animal-skin parchments without compromising the physical integrity of the historical artifacts.
Key Distinction/Mechanism: Unlike traditional sampling methods that require physically excising or damaging portions of rare manuscripts, this technique employs non-abrasive swabbing combined with forensic-level, next-generation DNA sequencing to harvest and amplify trace genetic sequences safely.
Major Frameworks/Components:
- Dry cytology brush cellular extraction
- Forensic-level, next-generation sequencing (NGS) and genetic amplification
- Interdisciplinary synthesis of humanities (medieval history) and hard sciences (genetics, population health)
Branch of Science: Molecular Genetics, Bioarchaeology, Veterinary Genetics, and Forensic Science.
Future Application: Determining the exact temporal and geographic origins of undated manuscripts, mapping ancient trade routes, tracking the historical evolution of domesticated livestock breeds, and identifying historical agricultural diseases.
Why It Matters: This breakthrough bridges the gap between historical preservation and biological research, establishing a trusted protocol for curators and unlocking a 1,300-year-old biological archive previously inaccessible due to preservation concerns.
Researchers have demonstrated a nondestructive way to collect cellular material from historical parchment manuscripts, allowing them to conduct genetic analyses that offer new insights into everything from trade routes to agricultural practices dating back 1,300 years—without harming the valuable manuscripts.
Parchment is made from animal skins and has been in use for thousands of years across Europe, the Middle East, and parts of Africa to create a wide variety of documents, from legal documents to maps.
“Because they are made from animal skins, it is often possible to extract genetic information from parchments,” says Tim Stinson, corresponding author of a paper on this research and an associate professor of English at North Carolina State University. “That genetic information, in turn, offers us a window into the past, answering questions about things such as when and where a manuscript was made.”
“Because parchments have been in use for so long, and often record detailed historical information, the genetic information they contain can also shed light on the evolution of domesticated farm species, how breeds developed over time, livestock diseases, and so on,” says Matthew Breen, coauthor of the paper and the Oscar J. Fletcher Distinguished Professor of Comparative Oncology Genetics in NC State’s College of Veterinary Medicine.
“This paper is particularly important because one of the biggest challenges for this emerging field of genetic analysis has been gaining access to historic parchments, due to concerns that collecting samples would damage these culturally significant artifacts,” says Stinson. “Our work shows that we can collect samples without harming the parchments, which is a big step forward.”
For this study, the researchers used the nondestructive technique to collect cellular samples from ninety-one manuscripts held by the Rubenstein Library at Duke University. The manuscripts originated in areas from England to Ethiopia and were written between the late eighth and early twentieth centuries.
The nondestructive sampling involves rubbing the parchment with a cytology brush, identical to the kind used for Pap smears.
“Cytology brushes can be used when dry and do an excellent job of harvesting cellular material without damaging the integrity of the artifact being sampled,” says Breen.
The researchers then extract the cellular material from the brushes and make use of forensic-level, next-generation sequencing technologies to pull out and amplify genetic sequences.
“We’re essentially using state-of-the-art technologies and genetic analytical techniques to get new, empirical information regarding historical, cultural, and agricultural practices,” says Stinson.
“We’ve shown that we’re able to extract a tremendous amount of new information from these parchments without harming them,” says Breen. “This will hopefully engender trust with those organizations that are responsible for preserving these historic documents.”
“We’re excited about the potential of this field and are seeking funding that will allow us to explore that potential,” says Stinson. “We’ve demonstrated that this is a vast, untapped source of historical information, and we want to continue this pioneering work.”
“We have a remarkable opportunity here,” says Breen. “It is essentially a whole new field, bringing together a truly interdisciplinary range of expertise spanning fields from genetics to medieval history.”
Published in journal: Manuscript Studies
Title: Adventures in the Animal Archive: New Techniques for the Genetic Analysis of Parchment Manuscripts
Authors: Timothy L. Stinson, Melissa K. R. Scheible, Rachael Thomas, Nicholas E. Wagner, Matthew Breen, Benjamin J. Callahan, and Kelly Meiklejohn
Source/Credit: North Carolina State University | Matt Shipman
Reference Number: gen051826_01
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