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Advanced bone-targeted nanomaterials for the systemic treatment of osteoporosis
Wenwen Fan1, Pinzhuo Wu1, Changsheng Liu1
1Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
Abstract:
Osteoporosis is a systemic skeletal disorder marked by reduced bone density and microstructural deterioration, leading to increased fragility and fracture risk. Current clinical treatments, mainly pharmacological, are limited by inadequate efficacy at vertebral sites, unidirectional inhibition of osteoclasts and systemic side effects. Nanotechnology offers a promising strategy to enhance drug delivery and bioavailability. Bone-targeted nanomaterial-based systems employing ligands such as bisphosphonates or peptides enable selective transport to bone tissue. Nanocarriers, including hydroxyapatite-based ones, can actively target osteoblasts or osteoclasts and support sustained release. This review synthesizes cellular-level insights into osteoporosis pathogenesis, critiques current therapeutic limitations and highlights advances in targeted nanomedicines. Specifically, it focuses on bone-targeting polymeric nanoparticle systems, which promote bone repair through multiple mechanisms: targeted drug delivery, modulation of the bone microenvironment, dual regulation of osteoblasts and osteoclasts, stimulation of bioactive signals from internal organs and restoration of mitochondrial homeostasis. By enhancing bone metabolism, these nanotherapeutic strategies present transformative potential for osteoporosis treatment and offer innovative directions for developing advanced regenerative biomaterials.
Insights
Targeted polymeric nanoparticles offer a novel approach to osteoporosis treatment by enhancing bone repair. These nanomedicines improve drug delivery, modulate the bone microenvironment, and restore mitochondrial homeostasis for better bone metabolism.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Skeletal Biology
Background:
- Osteoporosis is a skeletal disorder characterized by low bone density and microstructural deterioration, increasing fracture risk.
- Current pharmacological treatments for osteoporosis have limitations, including poor efficacy at vertebral sites and systemic side effects.
- Nanotechnology presents an opportunity to improve drug delivery and bioavailability for osteoporosis treatment.
Purpose of the Study:
- To review cellular mechanisms of osteoporosis pathogenesis.
- To critique the limitations of current osteoporosis therapies.
- To highlight advancements in targeted nanomedicines for osteoporosis treatment.
Main Methods:
- Focus on bone-targeting polymeric nanoparticle systems.
- Analysis of mechanisms promoting bone repair via nanomedicines.
- Synthesis of cellular-level insights and therapeutic strategies.
Main Results:
- Polymeric nanoparticles enable targeted drug delivery to bone tissue.
- These nanomedicines modulate the bone microenvironment and dual-regulate osteoblasts and osteoclasts.
- Nanotherapeutic strategies enhance bone metabolism and restore mitochondrial homeostasis.
Conclusions:
- Bone-targeting polymeric nanoparticles show transformative potential for osteoporosis treatment.
- These nanomedicines offer innovative directions for developing advanced regenerative biomaterials.
- Nanotechnology enhances bone repair through multiple targeted mechanisms.
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