title: R-flurbiprofen reverses multidrug resistance, proliferation and metastasis in gastric cancer cells by p75(NTR) induction.
abstract: Nonsteroidal anti-inflammatory drugs (NSAIDs) can inhibit cell growth and metastasis, and induce cell apoptosis in cancerous cells. They have been shown to reduce incidence and mortality of gastric cancer by an unknown mechanism. NSAIDs often exert their effects by Cox-2 inhibition, and Cox-2 is overexpressed in gastric cancer cells. Nevertheless, when gastric cancer cells were treated with different NSAIDs, the non-Cox-2-inhibiting R-flurbiprofen was most effective at reducing proliferation of gastric cancer cells in vitro. R-Flurbiprofen prevented the metastatic characteristics of gastric cancer cells in vitro, and reduced tumor size and metastasis in vitro, when gastric cancer cells were injected into nude mice. R-Flurbiprofen also affected multidrug resistance, increasing the sensitivity of resistant gastric cancer cells to chemotherapeutic agents. Mechanistically, R-flurbiprofen was found to have pleiotropic effects, changing levels of cell cycle factors like Cyclin D1 and CKD4, apoptotic protwins like caspase3 and Bcl-2, and protwins that affect metastasis, like metalloproteases. Consistent with reports on other cancer cell types, NSAID treatment with R-flurbiprofen increased levels of the tumor suppressor neurotrophin receptor (p75(NTR)) in gastric cancer cells. The anticancer effects of R-flurbiprofen were found to require induction of p75(NTR) via the p38 signaling pathway, suggesting a possible mechanism of action.
authors.affiliation: State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, the Fourth Military Medical University, Department of Pharmacology, School of Pharmacy, the Fourth Military Medical University, Shaanxi Province 710032, P. R. China.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Jin
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Wang
authors.forename: Lili
authors.initials: L
authors.lastname: Liu
authors.forename: Liucun
authors.initials: L
authors.lastname: Gao
authors.forename: Li
authors.initials: L
authors.lastname: Sun
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Li
authors.forename: Hongxi
authors.initials: H
authors.lastname: Zhao
authors.forename: Yanglin
authors.initials: Y
authors.lastname: Pan
authors.forename: Hai
authors.initials: H
authors.lastname: Shi
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.forename: Liu
authors.initials: L
authors.lastname: Hong
authors.forename: Jie
authors.initials: J
authors.lastname: Liang
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wu
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Yang
authors.forename: Kaichun
authors.initials: K
authors.lastname: Wu
authors.forename: Daiming
authors.initials: D
authors.lastname: Fan
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D001483:Base Sequence; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D018432:Drug Resistance, Multiple / Q000187:drug effects; D005480:Flurbiprofen / Q000494:pharmacology*; D006801:Humans; D051379:Mice; D008819:Mice, Nude; D009419:Nerve Tissue Proteins / Q000037:antagonists & inhibitors / Q000096:biosynthesis* / Q000235:genetics; D034741:RNA, Small Interfering / Q000235:genetics; D017475:Receptors, Nerve Growth Factor / Q000037:antagonists & inhibitors / Q000096:biosynthesis* / Q000235:genetics; D013274:Stomach Neoplasms / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology / Q000556:secondary; D023041:Xenograft Model Antitumor Assays
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000970:Antineoplastic Agents; C484065:NGFR protein, human; D009419:Nerve Tissue Proteins; D034741:RNA, Small Interfering; D017475:Receptors, Nerve Growth Factor; D005480:Flurbiprofen