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Published in: Journal of Orthopaedic Surgery and Research 1/2023

Open Access 01-12-2023 | Bone Metastasis | Research Article

GPR84 potently inhibits osteoclastogenesis and alleviates osteolysis in bone metastasis of colorectal cancer

Authors: Li Jian, Long Shi-wei, Jing Dan, Wu Juan, Zheng Wei

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2023

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Abstract

The expression of GPR84 in bone marrow-derived monocytes/macrophages (BMMs) can inhibit osteoclast formation; however, its role in bone metastasis of colorectal cancer (CRC) is still unknown. To investigate the effects of GPR84 on bone metastasis of CRC, the murine CRC cell line MC-38 was injected into tibial bone marrow. We found that the expression of GPR84 in BMMs was gradually downregulated during bone metastasis of CRC, and the activation of GPR84 significantly prevented osteoclastogenesis in the tumor microenvironment. Mechanistically, the MAPK pathway mediated the effects of GPR84 on osteoclast formation. Moreover, we found that IL-11 at least partly inhibited the expression of GPR84 in the tumor microenvironment through the inactivation of STAT1. Additionally, activation of GPR84 could prevent osteolysis during bone metastasis of CRC. Our results suggest that CRC cells downregulate the expression of GPR84 in BMMs to promote osteoclastogenesis in an IL-11-dependent manner. Thus, GPR84 could be a potential therapeutic target to attenuate bone destruction induced by CRC metastasis.
Literature
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Metadata
Title
GPR84 potently inhibits osteoclastogenesis and alleviates osteolysis in bone metastasis of colorectal cancer
Authors
Li Jian
Long Shi-wei
Jing Dan
Wu Juan
Zheng Wei
Publication date
01-12-2023
Publisher
BioMed Central
Published in
Journal of Orthopaedic Surgery and Research / Issue 1/2023
Electronic ISSN: 1749-799X
DOI
https://doi.org/10.1186/s13018-022-03473-y

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