Abstract:
:The BRMS1 metastasis suppressor was recently shown to negatively regulate NF-kappaB signaling and down regulate NF-kappaB-dependent uPA expression. Here we confirm that BRMS1 expression correlates with reduced NF-kappaB DNA binding activity in independently derived human melanoma C8161.9 cells stably expressing BRMS1. We show that knockdown of BRMS1 expression in these cells using small interfering RNA (siRNA) leads to the reactivation of NF-kappaB DNA binding activity and re-expression of uPA. Further, we confirm that BRMS1 expression does not alter IKKbeta kinase activity suggesting that BRMS1-dependent uPA regulation does not occur through inhibition of the classical upstream activators of NF-kappaB. BRMS1 has been implicated as a corepressor of HDAC1 and consistent with this, we show that BRMS1 promotes HDAC1 recruitment to the NF-kappaB binding site of the uPA promoter and is associated with reduced H3 acetylation. We also confirm that BRMS1 expression stimulates disassociation of p65 from the NF-kappaB binding site of the uPA promoter consistent with its reduced DNA binding activity. These data suggest that BRMS1 recruits HDAC1 to the NF-kappaB binding site of the uPA promoter, modulates histone acetylation of p65 on the uPA promoter, leading to reduced NF-kappaB binding activity on its consensus sequence, and reduced transactivation of uPA expression.
journal_name
Clin Exp Metastasisjournal_title
Clinical & experimental metastasisauthors
Cicek M,Fukuyama R,Cicek MS,Sizemore S,Welch DR,Sizemore N,Casey Gdoi
10.1007/s10585-009-9235-1subject
Has Abstractpub_date
2009-01-01 00:00:00pages
229-37issue
3eissn
0262-0898issn
1573-7276journal_volume
26pub_type
杂志文章abstract::Development of central nervous system (CNS) metastases in breast cancer (BC) is associated with poor prognosis. The incidence of CNS metastases in metastatic BC is reported to be about 10-16 %, but different subtypes of BC are associated with different risk of developing CNS metastases. We retrospectively analysed the...
journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章,多中心研究
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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更新日期:1984-07-01 00:00:00
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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更新日期:2009-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章,评审
doi:10.1007/s10585-018-9921-y
更新日期:2018-08-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/b:clin.0000017168.83616.d0
更新日期:2004-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-005-3098-x
更新日期:2005-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-009-9276-5
更新日期:2009-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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更新日期:2007-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1020392309715
更新日期:2002-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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journal_title:Clinical & experimental metastasis
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/s10585-019-09960-7
更新日期:2019-04-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章,评审
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更新日期:2017-10-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1006738901839
更新日期:1999-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
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doi:10.1007/s10585-010-9314-3
更新日期:2010-04-01 00:00:00
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journal_title:Clinical & experimental metastasis
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更新日期:1989-01-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
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更新日期:2007-01-01 00:00:00
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