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International journal of biological macromolecules

Surface layer protein from Lactobacillus acidophilus NCFM inhibit intestinal pathogen-induced apoptosis in HT-29 cells.


PMID 28057572

Abstract

Intestinal pathogens have been proposed to adhere to epithelial cells and cause apoptosis. This study was to investigate the inhibitory effects of surface layer protein (SLP, 46kDa) from Lactobacillus acidophilus NCFM on Escherichia coli and Salmonella-induced apoptosis in HT-29 cells and the mechanism of the inhibition was also studied. The SLP could alleviate the chromatin condensation caused by intestinal pathogens as observed under fluorescent microscope. Flow cytometry analysis showed that the SLP decreased E. coli and Salmonella-induced apoptosis by 46% and 48%, respectively. The SLP could also inhibit the mitochondrial membrane potential reduction and Ca

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