期刊
JOURNAL OF MEDICAL MICROBIOLOGY
卷 56, 期 8, 页码 1011-1016出版社
MICROBIOLOGY SOC
DOI: 10.1099/jmm.0.47194-0
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Internalin A is a surface protein of the facultative intracellular pathogen Listeria monocytogenes that interacts with the human host cell protein E-cadherin to facilitate invasion of epithelial cells. A single amino acid substitution at position 16 in mouse E-cadherin prevents this interaction. Synthetic polypeptides of 30 aa encompassing position 16 of human and mouse E-cadherin were tested for their ability to inhibit in vitro invasion of Caco-2, HepG2 and TIB73 cell lines by L. monocytogenes. Only the human-derived peptide was capable of inhibiting invasion in the human-origin Caco-2 and HepG2 cell lines. These findings demonstrate that small polypeptides can inhibit invasion of biologically relevant cell types by L. monocytogenes in vitro and may be potentially useful as therapeutic agents in vivo.
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