Identification of anti-viral activity of the cardenolides, Na+/K+-ATPase inhibitors, against porcine transmissible gastroenteritis virus.

Abstract:

:A series of naturally occurring cardenolides that exhibit potent anti-transmissible gastroenteritis virus (TGEV) activity in swine testicular (ST) cells has been identified. In an immunofluorescence assay, these cardenolides were found to diminish the expressions of TGEV nucleocapsid and spike protein, which was used as an indication for viral replication; block TGEV infection induced apoptosis and cytopathic effects; and impart the same trend of inhibitory activity against Na+/K+-ATPase as for anti-TGEV activity. The viral titer inhibition was found to take place in a dose-dependent manner. Knocking down expression of Na+/K+-ATPase, the cellular receptor of cardenolides, in ST cells was found to significantly impair the susceptibility of ST cells to TGEV infectivity. Thus, we have identified Na+/K+-ATPase as an anti-viral drug target and its antagonists, cardenolides, a novel class of anti- TGEV agents.

journal_name

Toxicol Appl Pharmacol

authors

Yang CW,Chang HY,Hsu HY,Lee YZ,Chang HS,Chen IS,Lee SJ

doi

10.1016/j.taap.2017.04.017

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

129-137

eissn

0041-008X

issn

1096-0333

pii

S0041-008X(17)30174-6

journal_volume

332

pub_type

杂志文章