Abstract
Endometrial cancer is a major problem for women but only a small number of comprehensively characterized cell models are available for studies. Here, we established a new cell line derived from a Stage IIIc(1) Grade 2 endometrial adenocarcinoma. The cell line, designated LHY-821, was characterized using growth curve, karyotyping, immunohistochemical staining, immunoblotting, drug sensitivity assay, invasion assay, and xenografting in nude mice. LHY-821 has a doubling time of about 46h and a colony-forming efficiency of approximately 71%. These cells expresse high levels of progesterone receptor but not estrogen receptor and are sensitive to medroxyprogesterone acetate (MPA). LHY-821 also expresses pan-cytokeratin, PTEN, p53, β-catenin, IGF-1, and IGF-2. In addition, karyotype analysis revealed that LHY-821 possessed a near diploid karyotype including 6q-, 10p-, Xq-, 13q+, 17p+, and Triplo-12. LHY-821 showed highly tumorigenicity in nude mice (100%) and weak invasiveness. Chemosensitivity tests showed that LHY-821 was sensitive to both carboplatin and paclitaxel. LHY-821 is an immortalized cell line which had survived more than 80 serial passages; it may provide a novel tool to study the molecular mechanism and potential treatment for endometrial cancer.
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