Stimulatory effects of interleukin-1 beta on development of porcine uterine epithelial cell are mediated by activation of the ERK1/2 MAPK cell signaling cascade

Wooyoung Jeong, Jinhyeon Kim, Fuller W. Bazer, Gwonhwa Song, Jinyoung Kim

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Successful establishment of pregnancy depends on timely changes in the conceptus (embryo and associated extra-embryonic membranes) and uterine endometrium orchestrated by molecules from both the conceptus and uterus. Interleukin-1 beta (IL-1β) is an important mediator of that communication regulating development of the peri-implantation conceptus and opening the window of implantation during early pregnancy. However, little is known about IL-1β-mediated intracellular signaling cascades and functional effects in uterine luminal epithelium (LE) during the peri-implantation period of pregnancy in pigs. Therefore, this study determined, using an immortalized porcine LE (pLE) cell line from day 12 pregnant gilts: 1) the intracellular signaling cascade responsible for activities of IL-1β in pLE cells, and 2) the changes in cellular activities induced by IL-1β. IL-1β stimulated phosphorylation of ERK1/2 proteins in pLE cells in a dose-dependent manner. Ten ng/ml IL-1β increased levels of phosphorylated (p)-ERK1/2 proteins in pLE cells within 15 min post-treatment, and this IL-1β-induced phosphorylated status was inhibited by increasing doses of U0126 (ERK1/2 inhibitor). In addition IL-1β increased p-P70S6K, p-P90S6K, p-S6, and p-P38 proteins in a time-dependent manner, but IL-1β-induced activation of P70S6K and S6 proteins was significantly decreased in the presence of pharmacological inhibitors for ERK1/2 (U0126), MTOR (rapamycin), and P38 (SB203580). Moreover, IL-1β treatment potently increased the abundance of p-ERK1/2 proteins in the nucleus and cytoplasm. Similarly cytoplasmic p-S6 proteins were localized abundantly in the pLE cells treated with IL-1β. Furthermore, IL-1β increased proliferation of pLE cells by approximately 200%, and pretreatment of pLE cells with U0126 significantly inhibited this stimulatory effect. Collectively, results of this study indicate that IL-1β plays an important role in development of uterine LE by stimulating cell proliferation, and that these effects are coordinately regulated by activation of the ERK1/2 and P38 MAPK cell signaling cascades.

Original languageEnglish
Pages (from-to)225-234
Number of pages10
JournalMolecular and Cellular Endocrinology
Volume419
DOIs
Publication statusPublished - 2016 Jan 5

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program (No. NRF-2013R1A1A3012164 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning, Republic of Korea. And also the present research was conducted by the research fund of Dankook University (BK21 Plus) in 2014.

Publisher Copyright:
© 2015 Elsevier Ireland Ltd.

Keywords

  • ERK1/2 MAPK
  • IL-1β
  • Peri-implantation
  • Pig
  • Uterine luminal epithelium

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Endocrinology

Fingerprint

Dive into the research topics of 'Stimulatory effects of interleukin-1 beta on development of porcine uterine epithelial cell are mediated by activation of the ERK1/2 MAPK cell signaling cascade'. Together they form a unique fingerprint.

Cite this