期刊
BMB REPORTS
卷 53, 期 4, 页码 212-217出版社
KOREAN SOCIETY BIOCHEMISTRY & MOLECULAR BIOLOGY
DOI: 10.5483/BMBRep.2020.53.4.164
关键词
Heme oxygenase-1; MCF-7; MMP-9; PPAR gamma; 15d-PGJ(2)
资金
- Fund of Biomedical Research Institute, Chonbuk National University Hospital
- National Research Foundation of Korea (NRF) - Korean government [NRF-2016R1D1A1B03930499]
Activation of peroxisome proliferator-activated receptor gamma (PPAR gamma) serves as a key factor in the proliferation and invasion of breast cancer cells and is a potential therapeutic target for breast cancer. However, the mechanisms underlying this effect remain largely unknown. Herne oxygenase-1 (HO-1) is induced and over-expressed in various cancers and is associated with features of tumor aggressiveness. Recent studies have shown that HO-1 is a major downstream target of PPAR gamma. In this study, we investigated the effects of induction of HO-1 by PPAR gamma on TPA-induced MMP-9 expression and cell invasion using MCF-7 breast cancer cells. TPA treatment increased NF-kappa B/AP-1 DNA binding as well as MMP-9 expression. These effects were significantly blocked by 15d-PGJ(2), a natural PPAR gamma ligand. 15d-PGJ(2) induced HO-1 expression in a dose-dependent manner. Interestingly, HO-1 siRNA significantly attenuated the inhibition of TPA-induced MMP-9 protein expression and cell invasion by 15d-PGJ(2). These results suggest that 15d-PGJ(2) inhibits TPA-induced MMP-9 expression and invasion of MCF-7 cells by means of a heme oxygenase-1-dependent mechanism. Therefore, PPAR gamma/HO-1 signaling-pathway inhibition may be beneficial for prevention and treatment of breast cancer.
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