Abstract:
:IL-1, secreted by human embryos and trophoblast cells, is important for successful implantation and pregnancy. We previously reported that IL-1beta induced IL-8 production in human endometrial stromal cells (ESCs) and that induction was regulated by substances implicated in implantation. In the present study using human primary cells in culture, we measured IL-1beta-induced production of IL-8 from endometrial epithelial cells (EECs) and ESCs and examined effects of the endometrium-derived IL-8 on migration and number of first-trimester villous cytotrophoblast cells (vCTs). Both basal and IL-1beta-induced IL-8 levels of cell supernatants were much higher in EECs than ESCs. Addition of IL-1beta to EECs increased the chemotactic activity of the supernatants to vCTs, and this effect was suppressed by immunoneutralization with anti-IL-8 antibody. Supernatants of IL-1beta-stimulated EECs yielded significantly higher number of vCTs compared with those of untreated EECs, and the effect was inhibited by IL-8 antibody. These findings suggest that IL-1 promotes implantation by stimulating EECs to produce IL-8, which subsequently induces migration of vCTs and contributes to survival of vCTs.
journal_name
Endocrinologyjournal_title
Endocrinologyauthors
Hirota Y,Osuga Y,Hasegawa A,Kodama A,Tajima T,Hamasaki K,Koga K,Yoshino O,Hirata T,Harada M,Takemura Y,Yano T,Tsutsumi O,Taketani Ydoi
10.1210/en.2008-0264subject
Has Abstractpub_date
2009-01-01 00:00:00pages
350-6issue
1eissn
0013-7227issn
1945-7170pii
en.2008-0264journal_volume
150pub_type
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