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Monoclonal antibodies for the treatment of osteoporosis
1New Mexico Clinical Research & Osteoporosis Center, 300 Oak St. NE, Albuquerque, NM 87106, USA. mlewiecki@gmail.com
Introduction:
Osteoporosis is a systemic skeletal disorder that weakens bones and increases the risk of fractures. It is caused by perturbations of bone remodeling, the coupled process whereby bone is continually resorbed and formed in small discrete units. Despite the availability of cost-effective pharmacological agents that reduce fracture risk, many patients who could benefit from treatment are not receiving it. Advances in the understanding of the molecular regulators of bone remodeling have led to the identification of new targets for therapeutic intervention. Monoclonal antibodies directed to these targets have recently been developed, providing new ways of modulating bone remodeling that may provide additional benefits beyond previously available therapy.
Areas Covered:
An approved fully human monoclonal antibody to receptor activator of nuclear factor-κB ligand, the principal regulator of osteoclastic bone resorption, reduces the risk of fractures in postmenopausal women with osteoporosis. Monoclonal antibodies in development include inhibitors of sclerostin and Dickhopf1, with osteoanabolic activity that may be beneficial in the treatment of osteoporosis.
Expert Opinion:
Monoclonal antibodies to molecular regulators of bone remodeling represent a new class of compounds for the management of osteoporosis and other skeletal disorders associated with an imbalance of bone resorption and formation.
Insights
Monoclonal antibodies targeting bone remodeling offer a new therapeutic approach for osteoporosis. These treatments modulate bone resorption and formation, potentially improving fracture risk reduction beyond existing therapies.
Area of Science:
- Orthopedics and Rheumatology
- Molecular Biology
- Pharmacology
Background:
- Osteoporosis is a skeletal disorder characterized by weakened bones and increased fracture risk due to disrupted bone remodeling.
- Despite effective treatments, many at-risk patients do not receive adequate osteoporosis management.
- Recent advances in understanding bone remodeling have identified novel molecular targets for intervention.
Purpose of the Study:
- To review the role of monoclonal antibodies in modulating bone remodeling for osteoporosis treatment.
- To highlight new therapeutic strategies targeting molecular regulators of bone metabolism.
Main Methods:
- Review of approved and investigational monoclonal antibodies.
- Focus on antibodies targeting receptor activator of nuclear factor-κB ligand, sclerostin, and Dickkopf1.
- Analysis of their impact on osteoclastic bone resorption and osteoanabolic activity.
Main Results:
- An approved monoclonal antibody targeting receptor activator of nuclear factor-κB ligand has demonstrated fracture risk reduction in postmenopausal women.
- Investigational monoclonal antibodies targeting sclerostin and Dickkopf1 show potential osteoanabolic activity.
Conclusions:
- Monoclonal antibodies represent a promising new class of therapeutics for osteoporosis and related skeletal disorders.
- These agents offer novel mechanisms to manage imbalances in bone resorption and formation.
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