Xiaosong Chen,1,* Ping Wang,2,* Tongwen Ou,1 Jin Li1 1Department of Urology, Xuanwu Hospital of The Capital Medical University, Xuanwu Hospital, Beijing, People's Republic of China; 2Department of General Practice, Beijing Xicheng District White Paper Community Health Service Center, Beijing, People's Republic of China*These authors contributed equally to this workCorrespondence: Xiaosong ChenDepartment of Urology, Xuanwu Hospital of The Capital Medical University, Xuanwu Hospital, No. 45,

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... chun Street, Xicheng District, Beijing, 100053, People's Republic of China, Tel +86-10-83198899, Email cxsyzhjdsh@sohu.comIntroduction: Krüppel-like factors (KLFs), which comprise 17 family members, exert important functions during the development of cancer. The role of KLF16 seems controversial in carcinogenesis because both tumor suppressive and promoting effects have been reported.Methods: The expression level of KLF16 was analyzed based on public data sets from The Cancer Genome Atlas (TCGA) and evaluated by immunohistochemical (IHC) staining. CCK8 assay, colony formation analysis, transwell assays and the PI/Annexin V-APC assay kit were performed to detect cell growth, colony formation, cell migration and apoptosis of BC cells. Xenograft tumorigenesis assay was performed to detect the KLF16 expression on BC growth in vivo. Dual-luciferase reporter assay and chromatin immunoprecipitation (ChIP)-qPCR assay were performed to analyze the interaction between KLF16 and its target.Results: In this study, we explored the role of KLF16 in bladder cancer (BC). We demonstrated that KLF16 was overexpressed in human BC tissues. The high expression of KLF16 was a potential predictor of a poor prognosis in patients with BC. Interference with KLF16 expression in 563 cells, having relatively higher levels of KLF16, repressed cell proliferation and migration. In contrast, upregulation of KLF16 in T24 cells enhanced cellular function, including cell growth and migration. KLF16 also suppressed the apoptosis of BC cells. Additionally, KLF [...]