RT Journal Article
SR Electronic
T1 Kisspeptin-10 Inhibits Stromal-Derived Factor 1–Induced Invasion of Human Endometrial Cancer Cells
JF International Journal of Gynecologic Cancer
JO Int J Gynecol Cancer
FD BMJ Publishing Group Ltd
SP 210
OP 217
DO 10.1097/IGC.0000000000000050
VO 24
IS 2
A1 Elena Schmidt
A1 Maike Haase
A1 Elke Ziegler
A1 Günter Emons
A1 Carsten Gründker
YR 2014
UL http://ijgc.bmj.com/content/24/2/210.abstract
AB Objectives The cross talk between metastatic cancer cells and target sites is critical for the development and progression of metastases. Disruption of this interaction will allow to design mechanism-based effective and specific therapeutic interventions for metastases. We have established a coculture system of cells derived from different tumor entities and MG63 human osteoblastlike cells to analyze tumor cell invasion. Recently, we have shown that breast cancer cell invasion was dramatically increased when cocultured with MG63 cells.Using this model, we have now analyzed whether stromal-derived factor 1 (SDF-1) is responsible for human endometrial cancer cell invasion and whether kisspeptin-10 (KP-10) treatment affects SDF-1–induced invasion of endometrial cancer cells in vitro.Methods Invasion was quantified by assessment of endometrial cancer cell migration rate through an artificial basement membrane in a modified Boyden chamber during coculture with MG63 cells or after treatment with SDF-1α, SDF-1β, or the combination of both SDF-1 isoforms. In addition, the role of SDF-1 in invasion of endometrial cancer cells was analyzed by blocking SDF-1 secretion during coculture with MG64 cells. Furthermore, the effects of KP-10 treatment on MG63 coculture-driven and SDF-1–induced invasion were analyzed.Results Endometrial cancer cell invasion was significantly increased when cocultured with MG63 cells. Treatment with KP-10 reduced the ability to invade a reconstituted basement membrane and to migrate in response to the cellular stimulus. This effect was significant in a dose window of 10−13 to 10−11 mol/L. During coculture, SDF-1 protein expression of MG63 cells was significantly increased. The MG63 coculture-induced increase of endometrial cancer cell invasion could be blocked by anti–SDF-1 antibodies. Treatment of endometrial cancer cells in monoculture (without MG63) with SDF-1α, SDF-1β, or the combination of both isoforms resulted in a significant increase of endometrial cancer cell invasion. The SDF-1–induced increase of endometrial cancer cell invasion was significantly reduced after treatment with KP-10.Conclusions Our findings suggest that SDF-1 plays a major role in endometrial cancer invasion. Stromal-derived factor 1–induced invasion can be inhibited by KP-10 treatment.