The Family Lactobacillaceae: Genera Other than Lactobacillus

Dicks, Leon M. T.; Endo, Akihito

doi:10.1007/978-3-642-30120-9_207

Cited by 1 publication

(1 citation statement)

References 135 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When screened for metagenomic bacterial markers, the jars did not present a specific signature based on collection or tissue, but rather a sample‐dependent profile dominated by Proteobacteria, Acidobacteria, or Firmicutes (Figure 2). Most bacterial families present in the jars are widespread in most environments (Dicks & Endo, 2014; Mandic‐Mulec et al, 2015; Octavia & Lan, 2014; Voronina et al, 2015), and members of bacteria that are nearly ubiquitous and very resistant to heat, desiccation, and toxic chemicals, such as Clostridium , Streptomyces , Burkholderia or Virgibacillus (SI.3, Figure S8). This suggests that most bacteria in these samples were likely to be present due to environmental contamination, a problem that has been raised to attention recently in the analysis of ancient microbiomes (Farrer et al, 2021) but that is often overlooked in most ancient metagenomic analysis.…”

Section: Resultsmentioning

confidence: 99%

Metagenomic analysis of Ancient Egyptian canopic jars

Rayo

Neukamm

Tomoum

et al. 2022

American Journal of Biological Anthropology

View full text Add to dashboard Cite

Ancient Egyptian remains have been of interest for anthropological research for decades. Despite many investigations, the ritual vessels for the internal organs removed during body preparation—liver, lungs, stomach, and intestines, of Egyptian mummies are rarely used for palaeopathological or medical investigations. These artifacts, commonly referred to as canopic jars, are the perfect combination of cultural and biological material and present an untapped resource for both Egyptological and medical fields. Nevertheless, technical challenges associated with this archeological material have prevented the application of current ancient DNA techniques for both the characterization of human and pathogenic DNA. We present shotgun‐sequenced metagenomic profiles and ancient DNA degradation patterns from multiple canopic jars sampled from several European museum collections and enumerate current limitations and possible solutions for the future analysis of similar material. This is the first‐ever recorded evidence of ancient human DNA found in Ancient Egyptian canopic jars and the first associated metagenomic description of bacterial taxa in these funerary artifacts. Objectives In this study, our objectives were to characterize the metagenomic profile of the Ancient Egyptian funerary vessels known as canopic jars to retrieve endogenous ancient human DNA, reconstruct ancient microbial communities, and identify possible pathogens that could shed light on disease states of individuals from the past. Methods We applied ancient DNA techniques on 140 canopic jars to extract DNA and generate whole‐genome sequencing libraries for the analysis of both human and bacterial DNA. The samples were obtained from museum collections in Berlin (DE), Burgdorf (DE), Leiden (NE), Manchester (UK), Munich (DE), St. Gallen (CH), Turin (IT), and Zagreb (HR). Results Here we describe the first isolated DNA from the Egyptian artifacts that hold human viscera. No previous work was ever conducted on such material, which led to the first characterization of human DNA from Ancient Egyptian canopic jars and the profiling of the complex bacterial composition of this highly degraded, challenging, organic material. However, the DNA recovered was not of enough quality to confidently characterize bacterial taxa associated with infectious diseases, nor exclusive bacterial members of the human microbiome. Discussion In summary, we present the first genomic survey of the visceral content of Ancient Egyptian funerary artifacts and demonstrate the limitations of current molecular methods to analyze canopic jars, such as the incomplete history of the objects or the presence of uncharacterized compounds that can hamper the recovery of DNA. Our work highlights the main challenges and caveats when working with such complicated archeological material – and offers sampling recommendations for similarly complex future studies, such as incrementing the amount of starting material and sampling from the less exposed parts of the jar content. This is the first‐eve...

show abstract