Abstract:
:Endometrial cancer is the most common gynecological cancer. We identified interleukin 11 (IL11) as a critical mediator of endometrial tumourigenesis and demonstrated that IL11 regulates chondroitin sulfate proteoglycan (CSPG4) in human placental trophoblasts. CSPG4 is a cell membrane protein overexpressed in numerous human cancers, although its role in endometrial cancer has not been investigated. We examined CSPG4 expression and localization in primary human type I endometrioid grade (G) 1-3 tumours by qPCR and immunohistochemistry and determined whether IL11 stimulated CSPG4. IL11 upregulated CSPG4 mRNA in HEC1A (G2-derived endometrial epithelial cancer cell line) cells. IL11 administration to BALB/c nude mice enhanced HEC1A xenograft tumour growth and increased CSPG4 protein in tumours. CSPG4 mRNA was unchanged between human G1-3 endometrial cancer and control tissues. CSPG4 protein levels were elevated in the epithelium of G2 and G3 endometrial cancer and in the tumour-associated stroma of G3 tumour tissues compared to proliferative phase or post-menopausal endometrium. CSPG4 knockdown by siRNA reduced HEC1A proliferation and migration in vitro and reduced gene expression of the key epithelial-to-mesenchymal transition (EMT) regulator SNAIL. Our data suggest that CSPG4 inhibition may impair endometrial cancer progression by reducing cancer cell proliferation, migration and potentially EMT.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Winship A,Van Sinderen M,Heffernan-Marks A,Dimitriadis Edoi
10.3892/ijo.2017.3848subject
Has Abstractpub_date
2017-03-01 00:00:00pages
798-804issue
3eissn
1019-6439issn
1791-2423journal_volume
50pub_type
杂志文章abstract::The human ovarian cancer cell line OV-MZ-19, established from a patient with cystadenocarcinoma of the ovary, expressing thrombomodulin (TM), a cell surface receptor for the serine protease thrombin, interacts with monoclonal and polyclonal antibodies having different specificity for TM. These antibodies detect TM ant...
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