Presence of presenilin 1/2 affects the invasion and replication of Salmonella typhimurium.

Abstract:

:In this study, we used four different cell lines, with or without presenilin-1 or -2, to investigate the hypothesis that the presence of presenilin, the most prominently mutated gene in Alzheimer's patients, affects the infection rate of host cells by Salmonella. The invasion and replication of Salmonella in presenilin 1/2-deficient cells were significantly lower than those in presenilin 1/2-expressing cells. Among several presenilin-interacting proteins, the expression of filamin-A in presenilin 1/2-deficient cells was significantly lower than in presenilin 1/2-expressing cells. However, Salmonella infection of filamin-A-deficient M2 cells did not significantly differ from infection of filamin-A-containing A7 cells, ruling out the possibility that filamin-A is a major protein inhibiting Salmonella invasion and replication. It is of interest to note that Hes-1 expression, a downstream target of Notch signaling pathway, was significantly decreased by Salmonella infection. Our results demonstrate that the presence of presenilins affects the invasion and replication processes of Salmonella.

authors

Park JH,Kim HJ,Choy HE,Kim K

doi

10.1016/j.bbrc.2005.05.060

subject

Has Abstract

pub_date

2005-07-15 00:00:00

pages

1081-5

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)00972-1

journal_volume

332

pub_type

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