Cinobufotalin impedes Sw.71 cytotrophoblast cell line function via cell cycle arrest and apoptotic signaling. Academic Article uri icon


  • 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 a rat model of preE prior to the development of the syndrome. MBG and ouabain impair cytotrophoblast (CTB) cell function, which is critical for placental development. We evaluated the effect of a CTS, cinobufotalin (CINO), on CTB cell function in vitro. CINO at 1nM 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 1nM. 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. These data demonstrate that CINO impairs CTB cell function via cell cycle arrest and apoptotic signaling.

published proceedings

  • Mol Cell Biochem

altmetric score

  • 0.25

author list (cited authors)

  • Afroze, S. H., Sloan, J., Osuji, G., Drever, N., Pilkinton, K., Zawieja, D. C., Kuehl, T. J., & Nasir Uddin, M.

citation count

  • 8

complete list of authors

  • Afroze, Syeda H||Sloan, Jenna||Osuji, Grace-Ann C||Drever, Nathan||Pilkinton, Kimberly||Zawieja, David C||Kuehl, Thomas J||Nasir Uddin, M

publication date

  • November 2016