DLC1 Suppresses Breast Cancer Bone Metastasis

The skeleton is the most common metastasis site of breast cancer cells and the molecular underpinning of this process is incompletely understood. The tumor suppressor gene deleted in liver cancer-1 (DLC1) encodes a multi-domain protein including a RhoGTPase activating protein (RhoGAP) domain and has been reported to suppress the lung colonization of breast cancer cells. However, the role of DLC1 in breast cancer bone metastasis and the importance of RhoGAP-dependent and -independent pathways in this process remain unclear. Here, we showed that DLC1 silencing is linked to enhanced bone-tropism of breast cancer cell lines and poor prognosis of clinical samples.

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Wang Y, Lei R, Zhuang X, Zhang N, Pan H, Li G, Hu J, Pan X, Tao Q, Fu D, Xiao J, Chin YE, Kang Y, Yang Q, Hu G