Abstract
Regulator of chromosome condensation 2 (RCC2) is highly involved in the development of tumor malignancies. The underlying mechanisms remain to be elucidated. The present study aimed to explore the role of RCC2 in the development of tumor malignancies and explore the underlying mechanisms in colorectal cancer (CRC). RCC2 expression and survival analysis were performed in human pan-cancer. The results of searching its mRNA expression in The Cancer Genome Atlas (TCGA) database showed that RCC2 was highly expressed in different types of cancer. High RCC2 expression levels were significantly correlated with poor survival outcomes by the Kaplan-Meier analysis in the TCGA database. Immunohistochemistry revealed that RCC2 was higher expressed in 36 CRC tissues than in adjacent normal tissues. Co-immunoprecipitation revealed that RCC2 bound to high mobility group A2 (HMGA2). Ectopic expression of RCC2 promoted cell proliferation, migration and invasion, whereas knockdown of HMGA2 exerted the opposite effects. Collectively, the data provided a novel biomarker of RCC2 in various types of cancer. High RCC2 expression levels were correlated with poor prognosis in different types of cancer. In addition, RCC2 may combine with HMGA2 to promote CRC malignancy.
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