Overexpression of human osteopontin increases cell proliferation and migration in human embryo kidney-293 cells

[摘要] Malignant tumors are characterized by dysregulated cell growth and the metastasis of secondary tumors. Numerous studies have documented that osteopontin (OPN) plays a key role in regulating tumor progression and metastasis. Here, we show that the overexpression of OPN in human embryo kidney-293 cells significantly increases both the level of cell proliferation, by provoking the G1/S transition, and the level of cell migration in vitro. These findings suggest that augmented OPN contributes to cell growth and motility. Inhibiting OPN or the pathway it stimulates may therefore represent a novel approach for the treatment of primary tumors and associated metastases.

[学科分类] 分子生物学，细胞生物学和基因

[关键词] Osteopontin;Overexpression;Proliferation;Metastasis