Attachment of Lactobacillus casei strain GG to human colon carcinoma cell line Caco-2: comparison with other dairy strains

The degree of adhesion of Lactobacillus casei strain GG to human Caco-2 cell line was investigated. Assessment of adhesion was compared to the adhesion of enterotoxigenic human Escherichia coli strain H 10407 and enterotoxigenic bovine E. coli strain B44 (non-adhesive). Freeze-dried Lactobacillus GG or samples from dairy products had medium to strong binding to the Caco-2 cell line. Lactobacillus acidophilus (NCFB 1748) and L. bulgaricus showed no adhesion to the cell line while four tested Bifidobacterium strains had no or very weak adhesion to the Caco-2 cell line.