Interleukin-18 enhances breast cancer cell migration via down-regulation of claudin-12 and induction of the p38 MAPK pathway
- Authors
- Yang, Yoolhee; Cheon, Soyoung; Jung, Min Kyung; Song, Seok Bean; Kim, Daejin; Kim, Hee Jung; Park, Hyunjeong; Bang, Sa Ik; Cho, Daeho
- Issue Date
- 10-Apr-2015
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Keywords
- Interleukin-18 (IL-18); Tight junction; Claudin-12; Breast cancer; Migration
- Citation
- BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, v.459, no.3, pp 379 - 386
- Pages
- 8
- Journal Title
- BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
- Volume
- 459
- Number
- 3
- Start Page
- 379
- End Page
- 386
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/10588
- DOI
- 10.1016/j.bbrc.2015.02.108
- ISSN
- 0006-291X
1090-2104
- Abstract
- Interleukin-18 (IL-18) was recently reported to have a pro-tumor effect in various cancers. Increased IL-18 levels in the serum of cancer patients correlated with malignancy, and IL-18 acts a crucial factor for cell migration in gastric cancer and melanoma. Claudins, which are the most important tight junction proteins, are also linked with cancer progression and metastasis. However, the relationship between claudins and IL-18 is not well-understood. Here, we show that the migratory ability of MCF-7 cells was reduced when endogenous IL-18 expression was inhibited with IL-18 siRNA. Moreover, exogenous IL-18 enhanced breast cancer cell migration and suppressed the expression of the tight junction proteins claudin-1, claudin-3, claudin-4, and claudin-12 in MCF-7 cells. Knockdown of claudin-3, claudin-4, and claudin-12, but not claudin-1, increased breast cancer migration with maximal effects observed in claudin-12 siRNA-transfected cells. To investigate whether the mitogen-activated protein kinase (MAPK) signaling pathway is involved in IL-18-induced cell migration and claudin-12 expression, cells were pretreated with SB203580 (an inhibitor of p38 MAPK) or PD98059 (an inhibitor of ERK1/2) prior to the addition of IL-18. Although pretreatment of MCF-7 cells with SB203580 blocked both the enhanced cell migration and the decreased claudin-12 expression, P098059 only blocked cell migration and did not affect claudin-12 expression. In addition, exogenous IL-18 induced rapid phosphorylation of p38 MAPK. These results suggest that IL-18 is an important factor inducing breast cancer cell migration through down-regulation of claudin-12 and activation of the p38 MAPK pathway. (C) 2015 Elsevier Inc. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 대학 > 기초교양대학 > 기초교양학부 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.