27-Hydroxycholesterol represses G9a expression via oestrogen receptor alpha in breast cancer

High level 27-HC impairs trophoblast cell invasion and migration via LXR in pre-eclampsia

INTRODUCTION

To explore the potential impact of 27-hydroxycholesterol (27-HC) on trophoblast cell function in pre-eclampsia.

RESULTS

The levels of 27-HC and the expression of CYP27A1 are upregulated in clinical samples of PE. Furthermore, high concentrations of 27-HC can inhibit the invasion and migration ability of trophoblast cells in vitro, and this inhibitory effect is weakened after LXR silencing. In HTR8/SVneo cells treated with 27-HC, the expression of ABCA1/ABCG1 are increased. Finally, we established a mouse model of PE using l-NAME (N-Nitro-l-Arginine Methyl Ester). We found an increase in the levels of 27-HC in the peripheral blood serum of the PE mouse model, and an upregulation of CYP27A1 and LXR expressions in the placenta of the PE mouse model.

CONCLUSION

27-HC inhibits the invasion and migration ability of trophoblast cells by activating the LXR signaling pathway, which is involved in the pathogenesis of Pre-eclampsia(PE).