期刊
JOURNAL OF PHARMACOLOGICAL SCIENCES
卷 137, 期 3, 页码 305-312出版社
JAPANESE PHARMACOLOGICAL SOC
DOI: 10.1016/j.jphs.2018.07.008
关键词
Polyphyllin I; Gastric cancer; CIP2A; EMT; Metastasis
资金
- National Natural Sciences Foundation of China [8100157]
- Natural Science Foundation of Hubei Province of China [2016CFB528]
- Scientific and Technological Project of Shiyan City of Hubei Province [17Y01, 18Y25]
- Foundation for Innovative Research Team of Hubei University of Medicine [FDFR201801]
- National Training Program of Innovation and Entrepreneurship for Undergraduates [201810929012, 201810929014]
The aberrant expression of cancerous inhibitor of protein phosphatase 2A (CIP2A) indicates poor prognosis and promotes EMT and metastasis. EMT, a crucial cellular process that occurs during cancer progression and metastasis, has been reported to promote drug resistance in several previous studies. Consequently, ongoing research has been focused on exploring therapeutic options for preventing EMT to delay or reverse drug resistance. Polyphyllin I (PPI) is a natural component extracted from Paris polyphylla that displays anti-cancer properties. In the present study, we investigated whether PPI can be used in the cisplatin (DDP)-resistant human gastric cancer cell line SGC7901/DDP. The results demonstrated that PPI treatment significantly inhibited cell proliferation, invasion and EMT. TGF-beta 1 is known to promote EMT-induced metastasis in numerous tumor types. PPI inhibited the invasion of TGF beta 1-induced SGC7901/DDP cells in vitro. PPI also increased the mRNA and protein expression levels of E-cadherin but decreased the expression levels of vimentin. Further examination of the mechanism revealed that the CIP2A/PP2A/Akt pathway is partially involved in this regulation of EMT-related biomarkers and invasion. Furthermore, xenograft tests also confirmed the antitumor effects of PPI in vivo. We propose that PPI could be developed as a candidate drug for treating cancer invasion and migration. (c) 2018 The Authors. Production and hosting by Elsevier B.V. on behalf of Japanese Pharmacological Society.
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