Doxycycline decreases tumor burden in a bone metastasis model of human breast cancer.

Bone is one of the most frequent sites for metastasis in breast cancer patients,often resulting in significant clinical morbidity and mortality. Increased matrix metalloproteinase (MMP) activity of tumor cells correlates with a higher invasive and metastatic potential. Members of the tetracycline family of antibiotics, including doxycycline, have potential treatment value for bone metastasis; they inhibit cancer cell proliferation, and they are …