RT Journal Article
SR Electronic
T1 ID: 104: CINOBUFOTALIN HINDERS CYTOTROPHOBLASTS FUNCTION VIA CELL CYCLE ARREST
JF Journal of Investigative Medicine
JO J Investig Med
FD BMJ Publishing Group Ltd
SP 957
OP 957
DO 10.1136/jim-2016-000120.94
VO 64
IS 4
A1 GC Osuji
A1 M Reyes
A1 NN Drever
A1 TJ Kuehl
A1 MN Uddin
A1 SH Afroze
A1 DC Zawieja
A1 MR Beeram
YR 2016
UL http://hw-f5-jim.highwire.org/content/64/4/957.1.abstract
AB Objective Preeclampsia (preE) is a hypertensive disorder of pregnancy. Cardiotonic steroids (CTS) are endogenous inhibitors of Na+/K+ ATPase and at least one CTS, marinobufagenin (MBG), is elevated in preE prior to the development of the syndrome in rats with preE. MBG and ouabain impair cytotrophoblast (CTB) function, which is critical for placental development.Study Design We evaluated the effect of a CTS, cinobufotalin (CINO), on CTB cell function in vitro.Results CINO at ≥1 nM inhibited CTB cell proliferation, migration, and invasion (p<0.05) but had no effect on cell viability. There was a higher (p<0.05) percentage of G0/G1 phase cells in groups treated with CINO at ≥1 nM. CINO caused an increase in stress signaling p38 MAPK and a positive annexin-V staining in CTB cells, indicating the activation of apoptotic signaling. However, the CINO induced apoptotic signaling was prevented by p38 inhibition.Conclusion This data demonstrates that CINO impairs CTB cell function via cell cycle arrest and apoptotic signaling.