Search: WFRF:(Dwibedi Chinmay Kumar) >
Biological amplific...
Biological amplification of low frequency mutations unravels laboratory culture history of the bio-threat agent Francisella tularensis
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- Dwibedi, Chinmay Kumar (author)
- Umeå universitet,Molekylär Infektionsmedicin, Sverige (MIMS),Klinisk bakteriologi,Swedish Defense Research Agency, Umeå, Sweden
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- Larsson, Pär (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Ahlinder, Jon (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Lindgren, Petter (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Myrtennäs, Kerstin (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Granberg, Malin (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Larsson, Eva (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Öhrman, Caroline (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Sjödin, Andreas (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Stenberg, Per, 1974- (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Swedish Defense Research Agency, Umeå, Sweden
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- Forsman, Mats (author)
- Swedish Defense Research Agency, Umeå, Sweden
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- Johansson, Anders, 1966- (author)
- Umeå universitet,Molekylär Infektionsmedicin, Sverige (MIMS),Klinisk bakteriologi
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
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In: Forensic Science International. - : Elsevier. - 1872-4973 .- 1878-0326. ; 45
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Challenges of investigating a suspected bio attack include establishing if microorganisms have been cultured to produce attack material and to identify their source. Addressing both issues, we have investigated genetic variations that emerge during laboratory culturing of the bacterial pathogen Francisella tularensis. Key aims were to identify genetic variations that are characteristic of laboratory culturing and explore the possibility of using biological amplification to identify genetic variation present at exceedingly low frequencies in a source sample. We used parallel serial passage experiments and high-throughput sequencing of F. tularensis to explore the genetic variation. We found that during early laboratory culture passages of F. tularensis, gene duplications emerged in the pathogen genome followed by single-nucleotide polymorphisms in genes for bacterial capsule synthesis. Based on a biological enrichment scheme and the use of high-throughput sequencing, we identified genetic variation that likely pre-existed in a source sample. The results support that capsule synthesis gene mutations are common during laboratory culture, and that a biological amplification strategy is useful for linking a F. tularensis sample to a specific laboratory variant among many highly similar variants.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Medicinsk genetik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Medical Genetics (hsv//eng)
Keyword
- Microbial forensics
- Francisella tularensis
- Molecular evolution
- Genetic variation
- Monomorphic bacteria
- Source attribution
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dwibedi, Chinmay ...
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Larsson, Pär
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Ahlinder, Jon
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Lindgren, Petter
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Myrtennäs, Kerst ...
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Granberg, Malin
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show more...
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Larsson, Eva
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Öhrman, Caroline
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Sjödin, Andreas
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Stenberg, Per, 1 ...
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Forsman, Mats
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Johansson, Ander ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Medical Genetics
- Articles in the publication
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Forensic Science ...
- By the university
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Umeå University