16S rRNA terminal restriction fragment length polymorphism for the characterization of the nasopharyngeal microbiota

PLoS One. 2012;7(12):e52241. doi: 10.1371/journal.pone.0052241. Epub 2012 Dec 20.

Abstract

A novel non-culture based 16S rRNA Terminal Restriction Fragment Length Polymorphism (T-RFLP) method using the restriction enzymes Tsp509I and Hpy166II was developed for the characterization of the nasopharyngeal microbiota and validated using recently published 454 pyrosequencing data. 16S rRNA gene T-RFLP for 153 clinical nasopharyngeal samples from infants with acute otitis media (AOM) revealed 5 Tsp509I and 6 Hpy166II terminal fragments (TFs) with a prevalence of >10%. Cloning and sequencing identified all TFs with a prevalence >6% allowing a sufficient description of bacterial community changes for the most important bacterial taxa. The conjugated 7-valent pneumococcal polysaccharide vaccine (PCV-7) and prior antibiotic exposure had significant effects on the bacterial composition in an additive main effects and multiplicative interaction model (AMMI) in concordance with the 16S rRNA 454 pyrosequencing data. In addition, the presented T-RFLP method is able to discriminate S. pneumoniae from other members of the Mitis group of streptococci, which therefore allows the identification of one of the most important human respiratory tract pathogens. This is usually not achieved by current high throughput sequencing protocols. In conclusion, the presented 16S rRNA gene T-RFLP method is a highly robust, easy to handle and a cheap alternative to the computationally demanding next-generation sequencing analysis. In case a lot of nasopharyngeal samples have to be characterized, it is suggested to first perform 16S rRNA T-RFLP and only use next generation sequencing if the T-RFLP nasopharyngeal patterns differ or show unknown TFs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actinomycetales / genetics
  • Actinomycetales / isolation & purification
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Male
  • Moraxellaceae / genetics
  • Moraxellaceae / isolation & purification
  • Nasopharynx / microbiology*
  • Pasteurellaceae / genetics
  • Pasteurellaceae / isolation & purification
  • Polymerase Chain Reaction
  • Polymorphism, Restriction Fragment Length / genetics*
  • RNA, Ribosomal, 16S / genetics*
  • Staphylococcaceae / genetics
  • Staphylococcaceae / isolation & purification
  • Streptococcaceae / genetics
  • Streptococcaceae / isolation & purification

Substances

  • RNA, Ribosomal, 16S

Grant support

This study was supported by the Swiss National Science Foundation (M.D.-Ph.D. scholarship 323500-119214 to S.D.B.) and the 2012 Award of the Swiss Society of Hospital Hygiene & the Swiss Society for Infectious Diseases to M.H. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.