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Rapid adaptations o...
Rapid adaptations of Legionella pneumophila to the human host
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- Leenheer, Daniël (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab,Univ Tsukuba, Sch Integrat & Global Majors, PhD Program Human Biol, Tsukuba, Japan
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- Moreno, Anaísa B. (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab
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- Paranjape, Kiran (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab
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- Murray, Susan (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab
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- Jarraud, Sophie (författare)
- Hosp Civils Lyon, Inst Infect Agents, French Natl Reference Ctr Legionella, Lyon, France.;Univ Claude Bernard Lyon 1, Ctr Int Rech Infectiol, Legionella Pathogenesis Team, CIRI,CNRS,UMR5308,ENS Lyon, Lyon, France.
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- Ginevra, Christophe (författare)
- Hosp Civils Lyon, Inst Infect Agents, French Natl Reference Ctr Legionella, Lyon, France.;Univ Claude Bernard Lyon 1, Ctr Int Rech Infectiol, Legionella Pathogenesis Team, CIRI,CNRS,UMR5308,ENS Lyon, Lyon, France.
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- Guy, Lionel, PhD, Docent, 1980- (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab
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(creator_code:org_t)
- Microbiology Society, 2023
- 2023
- Engelska.
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Ingår i: Microbial Genomics. - : Microbiology Society. - 2057-5858. ; 9:3
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Legionella pneumophila are host-adapted bacteria that infect and reproduce primarily in amoeboid protists. Using similar infection mechanisms, they infect human macrophages, and cause Legionnaires’ disease, an atypical pneumonia, and the milder Pontiac fever. We hypothesized that, despite the similarities in infection mechanisms, the hosts are different enough that there exist high-selective value mutations that would dramatically increase the fitness of Legionella inside the human host. By comparing a large number of isolates from independent infections, we identified two genes, mutated in three unrelated patients, despite the short duration of the incubation period (2–14 days). One is a gene coding for an outer membrane protein (OMP) belonging to the OmpP1/FadL family. The other is a gene coding for an EAL-domain-containing protein involved in cyclic-di-GMP regulation, which in turn modulates flagellar activity. The clinical strain, carrying the mutated EAL-domain-containing homologue, grows faster in macrophages than the wild-type strain, and thus appears to be better adapted to the human host. As human-to-human transmission is very rare, fixation of these mutations into the population and spread into the environment is unlikely. Therefore, parallel evolution – here mutations in the same genes observed in independent human infections – could point to adaptations to the accidental human host. These results suggest that despite the ability of L. pneumophila to infect, replicate in and exit from macrophages, its human-specific adaptations are unlikely to be fixed in the population.
Ämnesord
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
Nyckelord
- comparative genomics
- host-specific adaptations
- Legionella pneumophila
- Legionnaires' disease
- molecular evolution
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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