Abstract:
BACKGROUND:Head and neck squamous cell carcinoma (HNSCC) is associated with poor survival. To identify prognostic and diagnostic markers and therapeutic targets, we studied ANO1, a recently identified calcium-activated chloride channel (CaCC). METHODS:High-resolution genomic and transcriptomic microarray analysis and functional studies using HNSCC cell line and CaCC inhibitors. RESULTS:Amplification and overexpression of genes within the 11q13 amplicon are associated with the propensity for future distance metastasis of HPV-negative HNSCC. ANO1 was selected for functional studies based on high correlations, cell surface expression and CaCC activity. ANO1 overexpression in cells that express low endogenous levels stimulates cell movement, whereas downregulation in cells with high endogenous levels has the opposite effect. ANO1 overexpression also stimulates attachment, spreading, detachment and invasion, which could account for its effects on migration. CaCC inhibitors decrease movement, suggesting that channel activity is required for the effects of ANO1. In contrast, ANO1 overexpression does not affect cell proliferation. INTERPRETATION:ANO1 amplification and expression could be markers for distant metastasis in HNSCC. ANO1 overexpression affects cell properties linked to metastasis. Inhibitors of CaCCs could be used to inhibit the tumourigenic properties of ANO1, whereas activators developed to increase CaCC activity could have adverse effects.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Ayoub C,Wasylyk C,Li Y,Thomas E,Marisa L,Robé A,Roux M,Abecassis J,de Reyniès A,Wasylyk Bdoi
10.1038/sj.bjc.6605823subject
Has Abstractpub_date
2010-08-24 00:00:00pages
715-26issue
5eissn
0007-0920issn
1532-1827pii
6605823journal_volume
103pub_type
杂志文章abstract:BACKGROUND:This study is to investigate the effects of geserelin+tamoxifen (TAM) on estradiol level, breast density (BD), endometrial thickness (ET), and blood lipids in premenopausal and perimenopausal women with hormone receptor-positive early-stage breast cancer. METHODS:This study recruited 110 premenopausal and p...
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