Metagenomic Analysis Reveals Presence of Treponema denticola in a Tissue Biopsy of the Iceman
| Autor: | Anton Thomma, Thomas Rattei, Albert Zink, Stefanie Widder, Giovanna Cipollini, Frank Maixner |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Biopsy
Opportunistic pathogens lcsh:Medicine Genome Oral Diseases Sequence alignment Medicine and Health Sciences lcsh:Science Phylogeny Genetics Multidisciplinary biology Ancient DNA Fossils Nucleotides Paleogenetics Treponema denticola Genomics Bacterial Pathogens Polymerase chain reaction Ribosomal RNA Medical Microbiology Oral Microbiome Sequence Analysis Research Article Molecular Sequence Data Oral Medicine Microbiology Iceman Humans Molecular Biology Techniques Sequencing Techniques Microbial Pathogens Molecular Biology Mouth Evolutionary Biology lcsh:R Computational Biology Biology and Life Sciences Genome analysis biology.organism_classification Organismal Evolution stomatognathic diseases RNA Ribosomal Metagenomics Microbial Evolution Metagenome lcsh:Q Genomic databases |
| Zdroj: | PLoS ONE, Vol 9, Iss 6, p e99994 (2014) PLoS ONE |
| Popis: | Ancient hominoid genome studies can be regarded by definition as metagenomic analyses since they represent a mixture of both hominoid and microbial sequences in an environment. Here, we report the molecular detection of the oral spirochete Treponema denticola in ancient human tissue biopsies of the Iceman, a 5,300-year-old Copper Age natural ice mummy. Initially, the metagenomic data of the Iceman’s genomic survey was screened for bacterial ribosomal RNA (rRNA) specific reads. Through ranking the reads by abundance a relatively high number of rRNA reads most similar to T. denticola was detected. Mapping of the metagenome sequences against the T. denticola genome revealed additional reads most similar to this opportunistic pathogen. The DNA damage pattern of specifically mapped reads suggests an ancient origin of these sequences. The haematogenous spread of bacteria of the oral microbiome often reported in the recent literature could already explain the presence of metagenomic reads specific for T. denticola in the Iceman’s bone biopsy. We extended, however, our survey to an Iceman gingival tissue sample and a mouth swab sample and could thereby detect T. denticola and Porphyrimonas gingivalis, another important member of the human commensal oral microflora. Taken together, this study clearly underlines the opportunity to detect disease-associated microorganisms when applying metagenomics- enabled approaches on datasets of ancient human remains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|