Article thumbnail

Secretor Genotype (FUT2 gene) Is Strongly Associated with the Composition of Bifidobacteria in the Human Intestine

By Pirjo Wacklin, Harri Mäkivuokko, Noora Alakulppi, Janne Nikkilä, Heli Tenkanen, Jarkko Räbinä, Jukka Partanen, Kari Aranko and Jaana Mättö


Intestinal microbiota plays an important role in human health, and its composition is determined by several factors, such as diet and host genotype. However, thus far it has remained unknown which host genes are determinants for the microbiota composition. We studied the diversity and abundance of dominant bacteria and bifidobacteria from the faecal samples of 71 healthy individuals. In this cohort, 14 were non-secretor individuals and the remainders were secretors. The secretor status is defined by the expression of the ABH and Lewis histo-blood group antigens in the intestinal mucus and other secretions. It is determined by fucosyltransferase 2 enzyme, encoded by the FUT2 gene. Non-functional enzyme resulting from a nonsense mutation in the FUT2 gene leads to the non-secretor phenotype. PCR-DGGE and qPCR methods were applied for the intestinal microbiota analysis. Principal component analysis of bifidobacterial DGGE profiles showed that the samples of non-secretor individuals formed a separate cluster within the secretor samples. Moreover, bifidobacterial diversity (p<0.0001), richness (p<0.0003), and abundance (p<0.05) were significantly reduced in the samples from the non-secretor individuals as compared with those from the secretor individuals. The non-secretor individuals lacked, or were rarely colonized by, several genotypes related to B. bifidum, B. adolescentis and B. catenulatum/pseudocatenulatum. In contrast to bifidobacteria, several bacterial genotypes were more common and the richness (p<0.04) of dominant bacteria as detected by PCR-DGGE was higher in the non-secretor individuals than in the secretor individuals. We showed that the diversity and composition of the human bifidobacterial population is strongly associated with the histo-blood group ABH secretor/non-secretor status, which consequently appears to be one of the host genetic determinants for the composition of the intestinal microbiota. This association can be explained by the difference between the secretor and non-secretor individuals in their expression of ABH and Lewis glycan epitopes in the mucosa

Topics: Research Article
Publisher: Public Library of Science
OAI identifier:
Provided by: PubMed Central

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.

Suggested articles


  1. (2009). A core gut microbiome in obese and lean twins.
  2. (2005). Colonic microbiota signatures across five northern european countries.
  3. (1999). Distribution of bifidobacterial species in human intestinal microflora examined with 16S rRNA-gene-targeted species-specific primers.
  4. (2007). Diversity of human gastrointestinal microbiota. novel perspestives from high throughput analyses,
  5. (2004). Genetic heterogeneity and functional properties of intestinal bifidobacteria.
  6. (1996). Human blood groups: Incidental receptors for viruses and bacteria.
  7. (2010). Impactofdietinshapinggutmicrobiotarevealedbyacomparativestudyinchildren from europe and rural africa.
  8. (2008). Interactomics in the human intestine: Lactobacilli and bifidobacteria make a difference.
  9. (2006). Microbial ecology: Human gut microbes associated with obesity.
  10. (2009). Microbiomic analysis of the bifidobacterial population in the human distal gut.
  11. (1985). Mucin degradation in human colon ecosystems. isolation and properties of fecal strains that degrade ABH blood group antigens and oligosaccharides from mucin glycoproteins.
  12. (2004). The gut microbiota as an environmental factor that regulates fat storage.
  13. (2009). The gut microbiota shapes intestinal immune responses during health and disease.
  14. (2001). The host genotype affects the bacterial community in the human gastronintestinal tract.
  15. (2007). The human microbiome project.