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2017 ; 8
(5
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
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English Wikipedia
Individual Patterns of Complexity in Cystic Fibrosis Lung Microbiota, Including
Predator Bacteria, over a 1-Year Period
#MMPMID28951476
de Dios Caballero J
; Vida R
; Cobo M
; Máiz L
; Suárez L
; Galeano J
; Baquero F
; Cantón R
; Del Campo R
mBio
2017[Sep]; 8
(5
): ä PMID28951476
show ga
Cystic fibrosis (CF) lung microbiota composition has recently been redefined by
the application of next-generation sequencing (NGS) tools, identifying, among
others, previously undescribed anaerobic and uncultivable bacteria. In the
present study, we monitored the fluctuations of this ecosystem in 15 CF patients
during a 1-year follow-up period, describing for the first time, as far as we
know, the presence of predator bacteria in the CF lung microbiome. In addition, a
new computational model was developed to ascertain the hypothetical ecological
repercussions of a prey-predator interaction in CF lung microbial communities.
Fifteen adult CF patients, stratified according to their pulmonary function into
mild (n = 5), moderate (n = 9), and severe (n = 1) disease, were recruited at the
CF unit of the Ramón y Cajal University Hospital (Madrid, Spain). Each patient
contributed three or four induced sputum samples during a 1-year follow-up
period. Lung microbiota composition was determined by both cultivation and NGS
techniques and was compared with the patients' clinical variables. Results
revealed a particular microbiota composition for each patient that was maintained
during the study period, although some fluctuations were detected without any
clinical correlation. For the first time, Bdellovibrio and Vampirovibrio predator
bacteria were shown in CF lung microbiota and reduced-genome bacterial parasites
of the phylum Parcubacteria were also consistently detected. The newly designed
computational model allows us to hypothesize that inoculation of predators into
the pulmonary microbiome might contribute to the control of chronic colonization
by CF pathogens in early colonization stages.IMPORTANCE The application of NGS to
sequential samples of CF patients demonstrated the complexity of the organisms
present in the lung (156 species) and the constancy of basic individual
colonization patterns, although some differences between samples from the same
patient were observed, probably related to sampling bias. Bdellovibrio and
Vampirovibrio predator bacteria were found for the first time by NGS as part of
the CF lung microbiota, although their ecological significance needs to be
clarified. The newly designed computational model allows us to hypothesize that
inoculation of predators into the lung microbiome can eradicate CF pathogens in
early stages of the process. Our data strongly suggest that lower respiratory
microbiome fluctuations are not necessarily related to the patient's clinical
status.
|*Microbiota
[MESH]
|Adult
[MESH]
|Anti-Bacterial Agents/administration & dosage/therapeutic use
[MESH]