Abstract

Bromodomain-containing protein 9 (BRD9), a component of non-canonical BAF chromatin remodeling complex, has been identified as a critical therapeutic target in hematological diseases. Despite the hematopoietic origin of osteoclasts, the role of BRD9 in osteoclastogenesis and bone diseases remains unresolved. Here, we show Brd9 deficiency in myeloid lineage enhances osteoclast lineage commitment and bone resorption through downregulating interferon-beta (IFN-β) signaling with released constraint on osteoclastogenesis. Notably, we show that BRD9 interacts with transcription factor FOXP1 activating Stat1 transcription and IFN-β signaling thereafter. Besides, function specificity of BRD9 distinguished from BRD4 during osteoclastogenesis has been evaluated. Leveraging advantages of pharmacological modulation of BRD9 and flexible injectable silk fibroin hydrogel, we design a local deliver system for effectively mitigating zoledronate related osteonecrosis of the jaw and alleviating acute bone loss in lipopolysaccharide-induced localized aggressive periodontitis. Overall, these results demonstrate the function of BRD9 in osteoclastogenesis and its therapeutic potential for bone diseases.

Osteoclast differentiation is critical for bone homeostasis. The authors show the negative feedback regulation of BRD9-mediated chromatin remodeling on osteoclastogenesis via interferon beta signaling and its therapeutic potential for bone diseases.

Details

Title
BRD9-mediated chromatin remodeling suppresses osteoclastogenesis through negative feedback mechanism
Author
Du, Jiahui 1   VIAFID ORCID Logo  ; Liu, Yili 1 ; Wu, Xiaolin 1 ; Sun, Jinrui 1 ; Shi, Junfeng 1 ; Zhang, Hongming 1 ; Zheng, Ao 1 ; Zhou, Mingliang 1   VIAFID ORCID Logo  ; Jiang, Xinquan 1   VIAFID ORCID Logo 

 Shanghai Jiao Tong University School of Medicine, Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai, China (GRID:grid.16821.3c) (ISNI:0000 0004 0368 8293); Shanghai Jiao Tong University, College of Stomatology, Shanghai, China (GRID:grid.16821.3c) (ISNI:0000 0004 0368 8293); Shanghai Engineering Research Center of Advanced Dental Technology and Materials, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China (GRID:grid.16821.3c) (ISNI:0000 0004 0368 8293) 
Pages
1413
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2786733053
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.