PIM3 Functions as Oncogenic Factor and Promotes the Tumor Growth and Metastasis in Colorectal Cancer.

Colorectal cancer (CRC) is one of the common human malignancies. Discovery and identification of novel therapeutic target is imperative to improve the prognosis of CRC patients. As a member of the PIM family, PIM3 has been found to be overexpressed in a variety of cancerous tumors. In this study, we evaluated the expression of PIM3 in CRC tissues and analyzed the role of PIM3 in CRC. Our results showed that PIM3 expression was significantly higher in CRC tissues compared with adjacent noncancerous tissues. The PIM3 expression level was found to be correlated with advanced disease stage and lymph node metastasis. Moreover, PIM3 was found to be able to predict poor prognosis in CRC patients as an independent factor. In vitro studies also showed that knockdown of PIM3 exhibited inhibitory effect on cell growth, promoted cell apoptosis and dampened invasive capability of HCT116 and SW620 cells. Moreover, PIM3 knockdown was able to delay tumor growth and suppress lung metastasis in xenograft model. Our results indicated that PIM3 is a potential therapeutic target for CRC. This article is protected by copyright. All rights reserved.