What is the role of cyclic di-GMP signaling within the human gut microbiome?

• Authors: Rachel M. Rudlaff , Christopher M. Waters
• Languages of publication: EN

Abstracts

EN

There is currently little understanding of the
role of the bacterial second messenger cyclic di-GMP
(c-di-GMP) in the human gut microbiome. C-di-GMP is
synthesized by highly conserved diguanylate cyclase
(DGC) enzymes and degraded by highly conserved
phosphodiesterase (PDE) enzymes. To begin to assess the
prevalence of c-di-GMP signaling in the gut microbiome,
we found on average 1.0 DGC and 0.8 PDE enzymes per
million base pairs of metagenomic DNA derived from stool
samples. Specific species encoding substantial numbers
of GGDEF and EAL domains were the commensal species Faecalibacterium prausnitzii, Eubacterium rectale, and Mitsuokella multacida. The species Bilophila wadsworthia and Klebsiella oxytoca were identified as gut microbiome
members that encode higher numbers of GGDEFs and
EALs and are associated with gut dysbiosis and infection.
Consistent with this result, genome analysis of several
enteric pathogens revealed significantly higher numbers
of GGDEFs and EALs per million base pairs compared to
the gut microbiome. Our analysis indicates that c-di-GMP
signaling is present but minimal in the gut microbiome,
and we speculate that the numbers of GGDEFs and EALs
in a given genome from a member of the gut microbiome
positively correlates with pathogenic potential.

Keywords

EN

Cyclic di-GMP; microbiome; gastrointestinal tract

• Publisher: De Gruyter Open
• Journal: Microbiome Science and Medicine
• Year: 2013
• Volume: 1
• Issue: 1

Dates

online

12 - 8 - 2014

accepted

19 - 6 - 2014

received

6 - 6 - 2014

Contributors

author

Rachel M. Rudlaff

• Department of Microbiology
  and Molecular Genetics

author

Christopher M. Waters

• Department of Microbiology
  and Molecular Genetics
• Michigan State
  University, East Lansing, Michigan, USA, 48824

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Identifiers

DOI

10.2478/micsm-2014-0001