Abstract:
:Emerging evidence suggests that gap junctional intercellular communication (GJIC) and expression of connexins (Cx) contribute to the metastatic potential of breast cancer cells. To more directly address this, an aggressive bone metastasis breast cancer cell line, MDA-MET (MET), was stably transfected with human Cx43 cDNA (MET/Cx43(+)). Focusing on clone 28 of MET/Cx43(+), we demonstrated that GJIC, Cx43 protein and Cx43 mRNA were significantly increased in MET/Cx43(+) cells relative to MET, the plasmid control for the Cx43 transfectants (MET/HY) and a metastatic breast cancer cell that is less metastatic to bone than MET, MDA-MB-231. Cx26 mRNA was also increased in MET/Cx43(+ )clone 28 cells while mRNA for Cx32, Cx37, Cx40 and Cx45 were not detected in any of the breast cancer cell lines examined. MET/Cx43(+ )clone 28 invasiveness was decreased by 33% relative to MET/HY, while their ability to migrate was unchanged. The ability of MET/Cx43(+ )clone 28 cells to adhere to hFOB and HUV-EC-C cells was decreased approximately 30% and 70%, respectively, relative to MET and MET/HY. E-cadherin and N-cadherin proteins were not detected in MET, MDA-MB-231, MET/Cx43(+ )clone 28 and MET/HY cells. However, OB-cadherin protein levels were decreased approximately 43% in MET/Cx43(+ )clone 28 relative to MET/HY cells. These findings suggest that GJIC and Cx43 expression contribute to breast cancer cell adhesion and migration, possibly through a mechanism involving OB-cadherin, and these changes in turn regulate the metastatic potential of breast cancer cells, especially to bone.
journal_name
Clin Exp Metastasisjournal_title
Clinical & experimental metastasisauthors
Li Z,Zhou Z,Donahue HJdoi
10.1007/s10585-007-9140-4subject
Has Abstractpub_date
2008-01-01 00:00:00pages
265-72issue
3eissn
0262-0898issn
1573-7276journal_volume
25pub_type
杂志文章abstract::The amount and type of sialylation of tumor cell membranes depends on the activity of a number of different sialyltransferase enzymes. For the detection of specific activities in human colorectal carcinoma tissue several glycoprotein and glycolipid acceptors were used: desialylated fetuin, alpha 1-acid glycoprotein, b...
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
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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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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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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF00114976
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1023/a:1018470709523
更新日期:1997-09-01 00:00:00
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journal_title:Clinical & experimental metastasis
pub_type: 杂志文章
doi:10.1007/BF00121912
更新日期:1995-09-01 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,meta分析,评审
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更新日期:2012-10-01 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:2011-08-01 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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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
doi:10.1023/b:clin.0000046140.19131.19
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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
pub_type: 杂志文章
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更新日期:2011-12-01 00:00:00