Abstract:
:Gastric cancer (GC) is a malignancy with few effective treatment options after metastasis occurs. Quercetin (Qu) intake has been associated with reduced incidence and slow development of GC, probably due to its anti-proliferative and apoptotic effects, but it is unclear whether Qu can inhibit the metastatic activity. The urokinase plasminogen activator (uPA)/uPA receptor (uPAR) system plays an important role in cancer metastasis. In this study, we measured both uPA activity and uPAR expression in GC and pericarcinous tissues, and we investigated the correlation between uPAR expression and the migratory and invasive activities of various GC cell lines. GC BGC823 and AGS cells were subjected to treatment with 10 μM Qu for 72 hours and uPAR knockdown, alone or in combination, before evaluating cell metastasis. The results showed that uPA activity and uPAR expression were higher in GC tissues than in pericarcinous tissues. Migratory and invasive activities of GC cell lines positively correlated with uPAR expression. Qu treatment decreased BGC823 and AGS cell migration and invasion, accompanied by reduced uPA and uPAR protein expression. Both Qu treatment and uPAR knockdown decreased matrix metalloproteinase-2 and -9 activity and blocked Pak1-Limk1-cofilin signaling. Qu treatment was associated with inhibition of NF-κb, PKC-δ, and ERK1/2, and with AMPKα activation. Specific inhibitors of NF-κb, PKC, and ERK1/2, and an AMPKα activator suppressed uPA and uPAR expression in GC cells. Collectively, Qu showed an antimetastatic effect on GC cells via the interruption of uPA/uPAR function and modulation of NF-κb, PKC-δ, ERK1/2, and AMPKα. This suggests that Qu is a promising agent against GC metastasis.
journal_name
Integr Cancer Therjournal_title
Integrative cancer therapiesauthors
Li H,Chen Cdoi
10.1177/1534735417696702subject
Has Abstractpub_date
2018-06-01 00:00:00pages
511-523issue
2eissn
1534-7354issn
1552-695Xjournal_volume
17pub_type
杂志文章abstract::The acute apoptotic response to genotoxic carcinogens animal model has been extensively used to assess the ability of drugs and natural products like dietary components to promote apoptosis in the colon and protect against colorectal cancer (CRC). This work aimed to use this model to identify the main chemopreventativ...
journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735417699880
更新日期:2018-06-01 00:00:00
abstract::The circadian production of melatonin by the pineal gland during the night provides an inhibitory signal to tissue-isolated steroid receptor SR+ and - MCF-7 human breast cancer xenografts in female nude rats. A pivotal mechanism for melatonin's anticancer effects in vivo involves a melatonin receptor-mediated inhibiti...
journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735409352320
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735409352084
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journal_title:Integrative cancer therapies
pub_type: 杂志文章,评审
doi:10.1177/1534735416661417
更新日期:2017-12-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 临床试验,杂志文章
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journal_title:Integrative cancer therapies
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journal_title:Integrative cancer therapies
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journal_title:Integrative cancer therapies
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更新日期:2009-03-01 00:00:00
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journal_title:Integrative cancer therapies
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更新日期:2011-09-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735412458828
更新日期:2013-05-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735415572880
更新日期:2015-05-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章,meta分析,评审
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更新日期:2015-05-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
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更新日期:2014-03-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
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更新日期:2005-06-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
doi:10.1177/1534735418822056
更新日期:2019-01-01 00:00:00
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journal_title:Integrative cancer therapies
pub_type: 杂志文章
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更新日期:2020-01-01 00:00:00
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journal_title:Integrative cancer therapies
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