Attenuation of colitis by Lactobacillus casei BL23 is dependent on the dairy delivery matrix

Bokyung Lee, Xiaochen Yin, Stephen M Griffey, Maria L. Marco

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The role of the food delivery matrix in probiotic performance in the intestine is not well understood. Because probiotics are often provided to consumers in dairy products, we investigated the contributions of milk to the health-benefiting performance of Lactobacillus casei BL23 in a dextran sulfate sodium (DSS)-induced murine model of ulcerative colitis. L. casei BL23 protected against the development of colitis when ingested in milk but not in a nutrient-free buffer simulating consumption as a nutritional supplement. Consumption of (acidified) milk alone also provided some protection against weight loss and intestinal inflammation but was not as effective as L. casei and milk in combination. In contrast, L. casei mutants deficient in DltD (lipoteichoic acid D-alanine transfer protein) or RecA (recombinase A) were unable to protect against DSS-induced colitis, even when consumed in the presence of milk. Mice fed either L. casei or milk contained reduced quantities of colonic proinflammatory cytokines, indicating that the L. casei DltD and RecA mutants as well as L. casei BL23 in nutrient-free buffer were effective at modulating immune responses. However, there was not a direct correlation between colitis and quantities of these cytokines at the time of sacrifice. Identification of the cecal microbiota by 16S rRNA gene sequencing showed that L. casei in milk enriched for Comamonadaceae and Bifidobacteriaceae; however, the consumption of neither L. casei nor milk resulted in the restoration of the microbiota to resemble that of healthy animals. These findings strongly indicate that probiotic strain efficacy can be influenced by the food/supplement delivery matrix.

Original languageEnglish (US)
Pages (from-to)6425-6435
Number of pages11
JournalApplied and Environmental Microbiology
Volume81
Issue number18
DOIs
StatePublished - 2015

Fingerprint

Lactobacillus casei
colitis
Colitis
milk
dairies
Milk
matrix
probiotics
Probiotics
Dextran Sulfate
Recombinases
sodium sulfate
Microbiota
dextran
Food
Bifidobacteriaceae
dietary supplements
Buffers
sodium
cytokines

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

Cite this

Attenuation of colitis by Lactobacillus casei BL23 is dependent on the dairy delivery matrix. / Lee, Bokyung; Yin, Xiaochen; Griffey, Stephen M; Marco, Maria L.

In: Applied and Environmental Microbiology, Vol. 81, No. 18, 2015, p. 6425-6435.

Research output: Contribution to journalArticle

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