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Published on: September 13, 2017
Osthole inhibits bone metastasis of breast cancer
Chunyu Wu1, Zhenping Sun1, Baofeng Guo1
1Department of Breast Surgery (Integrated Traditional and Western Medicine), Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China.
Abstract:
Bone is one of the most common sites for breast cancer metastasis, which greatly contributes to patient morbidity and mortality. Osthole, a major extract from Cnidium monnieri (L.), exhibits many biological and pharmacological activities, however, its potential as a therapeutic agent in the treatment of breast cancer bone metastases remain poorly understood. In this study, we set out to investigate whether osthole could inhibit breast cancer metastasis to bone in mice and clarified the potential mechanism of this inhibition. In the murine model of breast cancer osseous metastasis, mice that received osthole developed significantly less bone metastases and displayed decreased tumor burden when compared with mice in the control group. Osthole inhibited breast cancer cell growth, migration, and invasion, and induced apoptosis of breast cancer cells. Additionally, it also regulated OPG/RANKL signals in the interactions between bone cells (osteoblasts and osteoclasts) and cancer cells. Besides, it also inhibited TGF-β/Smads signaling in breast cancer metastasis to bone in MDA-231BO cells. The results of this study suggest that osthole has real potential as a therapeutic candidate in the treatment of breast cancer patients with bone metastases.
Insights
Osthole, a natural compound, effectively reduces breast cancer bone metastasis in mice by inhibiting cancer cell growth and invasion. It also modulates key signaling pathways involved in bone remodeling and cancer spread.
Area of Science:
- Oncology
- Pharmacology
- Biochemistry
Background:
- Breast cancer frequently metastasizes to bone, leading to significant patient morbidity and mortality.
- The therapeutic potential of osthole, a natural compound from *Cnidium monnieri*, for treating bone metastases is largely unexplored.
Purpose of the Study:
- To investigate the efficacy of osthole in inhibiting breast cancer bone metastasis in a murine model.
- To elucidate the underlying mechanisms by which osthole affects cancer cell behavior and bone microenvironment interactions.
Main Methods:
- A murine model of breast cancer osseous metastasis was utilized.
- Effects of osthole on cancer cell growth, migration, invasion, and apoptosis were assessed.
- Modulation of OPG/RANKL and TGF-β/Smads signaling pathways by osthole was analyzed.
Main Results:
- Osthole administration significantly reduced the incidence and burden of bone metastases in mice.
- Osthole inhibited breast cancer cell proliferation, migration, invasion, and induced apoptosis.
- Osthole regulated OPG/RANKL signaling between bone and cancer cells and inhibited TGF-β/Smads signaling in cancer cells.
Conclusions:
- Osthole demonstrates significant potential as a therapeutic agent for managing breast cancer bone metastases.
- Osthole's mechanisms involve direct anti-cancer effects and modulation of bone-related signaling pathways.
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