PMID- 38345752 OWN - NLM STAT- MEDLINE DCOM- 20240214 LR - 20240227 IS - 1559-131X (Electronic) IS - 1357-0560 (Linking) VI - 41 IP - 3 DP - 2024 Feb 12 TI - CRP inhibits the osteoblastic differentiation of OPCs via the up-regulation of primary cilia and repression of the Hedgehog signaling pathway. PG - 72 LID - 10.1007/s12032-024-02301-z [doi] AB - Inflammation disrupts bone metabolism and leads to bone damage. C-reactive protein (CRP) is a typical inflammation marker. Although CRP measurement has been conducted for many decades, how osteoblastic differentiation influences molecular mechanisms remains largely unknown. The present study attempted to investigate the effects of CRP on primary cultured osteoblast precursor cells (OPCs) while elucidating the underlying molecular mechanisms. OPCs were isolated from suckling Sprague-Dawleyrats. Fewer OPCs were observed after recombinant C-reactive protein treatment. In a series of experiments, CRP inhibited OPC proliferation, osteoblastic differentiation, and the OPC gene expression of the hedgehog (Hh) signaling pathway. The inhibitory effect of CRP on OPC proliferation occurred via blockade of the G1-S transition of the cell cycle. In addition, the regulation effect of proto cilium on osteoblastic differentiation was analyzed using the bioinformatics p. This revealed the primary cilia activation of recombinant CRP effect on OPCs through in vitro experiments. A specific Sonic Hedgehog signaling agonist (SAG) rescued osteoblastic differentiation inhibited by recombinant CRP. Moreover, chloral hydrate, which removes primary cilia, inhibited the Suppressor of Fused (SUFU) formation and blocked Gli2 degradation. This counteracted osteogenesis inhibition caused by CRP. Therefore, these data depict that CRP can inhibit the proliferation and osteoblastic differentiation of OPCs. The underlying mechanism could be associated with primary cilia activation and Hh pathway repression. CI - (c) 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Xu, Jie AU - Xu J AD - Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. FAU - Wu, Xiangmei AU - Wu X AD - Department of Physiology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. FAU - Zhu, Huifang AU - Zhu H AD - Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. FAU - Zhu, Yinghua AU - Zhu Y AD - Department of Pre-Hospital Emergency, Chongqing Emergency Medical Center, Central Hospital of Chongqing University, Chongqing, 400014, China. FAU - Du, Kailong AU - Du K AD - Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. FAU - Deng, Xiaoyan AU - Deng X AD - Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. FAU - Wang, Changdong AU - Wang C AUID- ORCID: 0000-0002-2595-1369 AD - Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China. wangchangdong@cqmu.edu.cn. LA - eng GR - CSTB2022NSCQ-MSX0945/Chongqing Natural Science Foundation of China/ GR - cstc2014jcyjA10024/Chongqing Postdoctoral Science Foundation/ GR - 20200112/the first scientific research plan of Yuzhong District, Chongqing in 2020/ GR - CYS19204/Jiangsu Agricultural Science and Technology Independent Innovation Fund/ GR - 20125503120015/Specialized Research Fund for the Doctoral Program of Higher Education of China/ GR - CY170402/Key Laboratory of Industrial Internet of Things and Networked Control, Ministry of Education/ GR - 2022-2/the scientific research project of Chunhui plan in ministry of education the people's republic of china/ PT - Journal Article DEP - 20240212 PL - United States TA - Med Oncol JT - Medical oncology (Northwood, London, England) JID - 9435512 RN - 0 (Hedgehog Proteins) RN - 9007-41-4 (C-Reactive Protein) SB - IM MH - Humans MH - *Hedgehog Proteins/metabolism MH - *C-Reactive Protein/pharmacology/metabolism MH - Cilia/metabolism MH - Up-Regulation MH - Cell Differentiation/physiology MH - Signal Transduction MH - Osteoblasts/metabolism MH - Inflammation/metabolism OTO - NOTNLM OT - C-reactive protein OT - Hedgehog OT - Inflammation OT - Osteoblastic differentiation OT - Primary cilia EDAT- 2024/02/12 15:44 MHDA- 2024/02/12 15:45 CRDT- 2024/02/12 11:14 PHST- 2023/07/03 00:00 [received] PHST- 2024/01/05 00:00 [accepted] PHST- 2024/02/12 15:45 [medline] PHST- 2024/02/12 15:44 [pubmed] PHST- 2024/02/12 11:14 [entrez] AID - 10.1007/s12032-024-02301-z [pii] AID - 10.1007/s12032-024-02301-z [doi] PST - epublish SO - Med Oncol. 2024 Feb 12;41(3):72. doi: 10.1007/s12032-024-02301-z.