Effects of STK15 overexpression on growth of human esophageal carcinoma cell line KYSE150 |
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Authors: | WANG Xiao-xia LI Xiao-zhong LU Na ZHAO Yan WANG Kang PEI Yi |
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Institution: | 1.Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, China;2.Department of Emergency, Shanxi Provincial People’s Hospital, Taiyuan 030012, China;3.Department of Geriatric Oncology, Shanxi Academy of Medical Sciences, Shanxi Dayi Hospital, Taiyuan 030032, China. |
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Abstract: | AIM:To investigate the effects of serine/threonine kinase 15 (STK15) overexpression on the growth of human esophageal squamous-cell carcinoma (ESCC) cell line KYSE150. METHODS:Recombinant pEGFP-C1-STK15 expression vector was transfected into KYSE150 cells using LipofectamineTM 2000 and the expression of STK15 was detected by fluorescence microscopy and Western blotting. The proliferation of the cells in vitro was measured by MTT assay. The cell cycle distribution and apoptosis were detected by flow cytometry. The proliferation of the cells in vivo was measured by tumorigenicity experiment in nude mice. RESULTS:After recombinant pEGFP-C1-STK15 expression vector was stably transfected into KYSE150 cells, GFP-STK15 fusion protein localized to centrosome and spindle. The STK15-overexpressing colonies were further confirmed by Western blotting. MTT assay showed that the proliferation of the cells in STK15 overexpression group was increased compared with control group (P<0.01). Flow cytometry analysis showed that the percentage of the cells in G0/G1 phase and the cell apoptosis in STK15 overexpression group were decreased compared with control group (P<0.01). The tumorigenicity experiment in nude mice showed that the proliferation of the cells in STK15 overexpression group was increased compared with control group (P<0.01). CONCLUSION: Overexpression of STK15 in human ESCC KYSE150 cells promotes the cell growth in vitro and in vivo, indicating that STK15 may serve as a novel therapeutic target for esophageal carcinoma. |
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Keywords: | Serine/threonine kinase 15 Esophageal neoplasms Cell proliferation |
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