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Updated: Mar 3, 2026

Differentiation of Functional Osteoclasts from Human Peripheral Blood CD14+ Monocytes
Published on: January 27, 2023
T Regulatory Cells in Bone Remodelling
1Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany. aline.bozec@uk-erlangen.de.
Purpose Of The Review:
In this review, we present the role of regulatory T (Treg) cells in bone remodelling and bone-related disease such as osteoporosis or inflammatory bone loss. We also discuss the cellular and molecular mechanism how Treg cells regulate osteoclastogenesis.
Recent Findings:
Treg cells could regulate osteoclastogenesis by secreting TGF-β and IL-10 as well as IL-4 cytokines. Moreover, Treg cells can additionally regulate osteoclast differentiation, in a cell-to-cell contact via the cytotoxic T lymphocyte antigen (CTLA-4). The latter induces the apoptosis of osteoclasts dependent on CD80/86 in vitro and in vivo. Treg cells mediate immunosuppressive function that controls undesired immune reactions, such as autoimmunity. Recently, Treg cells have been shown to influence non-immunological processes, such as bone homeostasis. Accumulated evidences have demonstrated that Treg cells can suppress osteoclast differentiation in vitro and in vivo.
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