Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review

Bone homeostasis (a healthy bone mass) is regulated by maintaining a delicate balance between bone resorption and bone formation. The regulation of physiological bone remodeling by a complex system that involves multiple cells in the skeleton is closely related to bone homeostasis. Loss of bone mass...

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Main Authors: Yingkun Hu, Jinghuan Huang, Chunying Chen, Yi Wang, Zhuowen Hao, Tianhong Chen, Junwu Wang, Jingfeng Li
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Journal of Functional Biomaterials
Subjects:
Online Access:https://www.mdpi.com/2079-4983/14/1/18
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author Yingkun Hu
Jinghuan Huang
Chunying Chen
Yi Wang
Zhuowen Hao
Tianhong Chen
Junwu Wang
Jingfeng Li
author_facet Yingkun Hu
Jinghuan Huang
Chunying Chen
Yi Wang
Zhuowen Hao
Tianhong Chen
Junwu Wang
Jingfeng Li
author_sort Yingkun Hu
collection DOAJ
description Bone homeostasis (a healthy bone mass) is regulated by maintaining a delicate balance between bone resorption and bone formation. The regulation of physiological bone remodeling by a complex system that involves multiple cells in the skeleton is closely related to bone homeostasis. Loss of bone mass or repair of bone is always accompanied by changes in bone homeostasis. However, due to the complexity of bone homeostasis, we are currently unable to identify all the mechanisms that affect bone homeostasis. To date, bone macrophages have been considered a third cellular component in addition to osteogenic spectrum cells and osteoclasts. As confirmed by co-culture models or in vivo experiments, polarized or unpolarized macrophages interact with multiple components within the bone to ensure bone homeostasis. Different macrophage phenotypes are prone to resorption and formation of bone differently. This review comprehensively summarizes the mechanisms by which macrophages regulate bone homeostasis and concludes that macrophages can control bone homeostasis from osteoclasts, mesenchymal cells, osteoblasts, osteocytes, and the blood/vasculature system. The elaboration of these mechanisms in this narrative review facilitates the development of macrophage-based strategies for the treatment of bone metabolic diseases and bone defects.
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spelling doaj.art-a674adceb46343b6b62e58713bf5ba982023-11-30T22:54:54ZengMDPI AGJournal of Functional Biomaterials2079-49832022-12-011411810.3390/jfb14010018Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative ReviewYingkun Hu0Jinghuan Huang1Chunying Chen2Yi Wang3Zhuowen Hao4Tianhong Chen5Junwu Wang6Jingfeng Li7Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaDepartment of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan 430000, ChinaBone homeostasis (a healthy bone mass) is regulated by maintaining a delicate balance between bone resorption and bone formation. The regulation of physiological bone remodeling by a complex system that involves multiple cells in the skeleton is closely related to bone homeostasis. Loss of bone mass or repair of bone is always accompanied by changes in bone homeostasis. However, due to the complexity of bone homeostasis, we are currently unable to identify all the mechanisms that affect bone homeostasis. To date, bone macrophages have been considered a third cellular component in addition to osteogenic spectrum cells and osteoclasts. As confirmed by co-culture models or in vivo experiments, polarized or unpolarized macrophages interact with multiple components within the bone to ensure bone homeostasis. Different macrophage phenotypes are prone to resorption and formation of bone differently. This review comprehensively summarizes the mechanisms by which macrophages regulate bone homeostasis and concludes that macrophages can control bone homeostasis from osteoclasts, mesenchymal cells, osteoblasts, osteocytes, and the blood/vasculature system. The elaboration of these mechanisms in this narrative review facilitates the development of macrophage-based strategies for the treatment of bone metabolic diseases and bone defects.https://www.mdpi.com/2079-4983/14/1/18bone homeostasisbone remodelingmacrophagemacrophage polarizationbone repair
spellingShingle Yingkun Hu
Jinghuan Huang
Chunying Chen
Yi Wang
Zhuowen Hao
Tianhong Chen
Junwu Wang
Jingfeng Li
Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
Journal of Functional Biomaterials
bone homeostasis
bone remodeling
macrophage
macrophage polarization
bone repair
title Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
title_full Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
title_fullStr Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
title_full_unstemmed Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
title_short Strategies of Macrophages to Maintain Bone Homeostasis and Promote Bone Repair: A Narrative Review
title_sort strategies of macrophages to maintain bone homeostasis and promote bone repair a narrative review
topic bone homeostasis
bone remodeling
macrophage
macrophage polarization
bone repair
url https://www.mdpi.com/2079-4983/14/1/18
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