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Zhang TL, Chen WK, Huang XP, Zheng BW, Wu PF, Zheng BY, Jiang LX, Escobar D, Li J, Lv GH, Huang W, Zhou H, Xu Z, Zou MX. Single-cell RNA sequencing reveals the MIF/ACKR3 receptor-ligand interaction between neutrophils and nucleus pulposus cells in intervertebral disc degeneration. Transl Res 2024; 272:1-18. [PMID: 38823438 DOI: 10.1016/j.trsl.2024.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 04/19/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
OBJECTIVES To unravel the heterogeneity and function of microenvironmental neutrophils during intervertebral disc degeneration (IDD). METHODS Single-cell RNA sequencing (scRNA-seq) was utilized to dissect the cellular landscape of neutrophils in intervertebral disc (IVD) tissues and their crosstalk with nucleus pulposus cells (NPCs). The expression levels of macrophage migration inhibitory factor (MIF) and ACKR3 in IVD tissues were detected. The MIF/ACKR3 axis was identified and its effects on IDD were investigated in vitro and in vivo. RESULTS We sequenced here 71520 single cells from 5 control and 9 degenerated IVD samples using scRNA-seq. We identified a unique cluster of neutrophils abundant in degenerated IVD tissues that highly expressed MIF and was functionally enriched in extracellular matrix organization (ECMO). Cell-to-cell communication analyses showed that this ECMO-neutrophil subpopulation was closely interacted with an effector NPCs subtype, which displayed high expression of ACKR3. Further analyses revealed that MIF was positively correlated with ACKR3 and functioned via directly binding to ACKR3 on effector NPCs. MIF inhibition attenuated degenerative changes of NPCs and extracellular matrix, which could be partially reversed by ACKR3 overexpression. Clinically, a significant correlation of high MIF/ACKR3 expression with advanced IDD grade was observed. Furthermore, we also found a positive association between MIF+ ECMO-neutrophil counts and ACKR3+ effector NPCs density as well as higher expression of the MIF/ACKR3 signaling in areas where these two cell types were neighbors. CONCLUSIONS These data suggest that ECMO-neutrophil promotes IDD progression by their communication with NPCs via the MIF/ACKR3 axis, which may shed light on therapeutic strategies.
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Affiliation(s)
- Tao-Lan Zhang
- Department of Pharmacy, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Wen-Kang Chen
- Department of Orthopedics Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xian-Peng Huang
- Department of Spine Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Bo-Wen Zheng
- Department of Spine Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China; Musculoskeletal Tumor Center, Peking University People's Hospital, Peking University, Beijing 100044, China
| | - Peng-Fei Wu
- Department of Genetics and Endocrinology, National Children's Medical Center for South Central Region, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Bo-Yv Zheng
- Department of Orthopedics Surgery, General Hospital of the Central Theater Command, Wuhan 430061, China
| | - Ling-Xiang Jiang
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, Indiana 46202 USA
| | - David Escobar
- Department of Cancer Biology, University of Toledo, College of Medicine & Life Sciences, Toledo, Ohio 43614, USA
| | - Jing Li
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Guo-Hua Lv
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Wei Huang
- Health Management Center, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Hong Zhou
- Department of Radiology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Zhun Xu
- Department of Spine Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Ming-Xiang Zou
- Department of Spine Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
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Wang P, Zhang S, Liu W, Lv X, Wang B, Hu B, Shao Z. Bardoxolone methyl breaks the vicious cycle between M1 macrophages and senescent nucleus pulposus cells through the Nrf2/STING/NF-κB pathway. Int Immunopharmacol 2024; 127:111262. [PMID: 38101216 DOI: 10.1016/j.intimp.2023.111262] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/11/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023]
Abstract
Intervertebral disc (IVD) degeneration (IDD), an age-related degenerative disease, is accompanied by the accumulation of senescent nucleus pulposus (NP) cells and extracellular matrix (ECM) degradation. The current study aims to clarify the role of M1 macrophages in the senescence of NP cells, and further explores whether bardoxolone methyl (CDDO-Me) can alleviate the pathological changes induced by M1 macrophages and relieve IDD. On the one hand, conditioned medium (CM) of M1 macrophages (M1CM) triggered senescence of NP cells and ECM degradation in a time-dependent manner. On the other hand, CM of senescent NP cells (S-NPCM) was collected to treat macrophages and we found that S-NPCM promoted the migration and M1-polarization of macrophages. However, both of the above effects can be partially blocked by CDDO-Me. We further explored the mechanism and found that M1CM promoted the expression level of STING and nuclear translocation of P65 in NP cells, while being restrained by CDDO-Me and STING inhibitor H151. In addition, the employment of Nrf2 inhibitor ML385 facilitated the expression level of STING and nuclear translocation of P65, thereby blocking the effects of CDDO-Me on suppressing senescence of NP cells and ECM degradation. In vivo, the injection of CDDO-Me into the disc decreased the infiltration of M1 macrophages and ameliorated degenerative manifestations in the puncture-induced rat IDD model. In conclusion, CDDO-Me was proved to break the vicious cycle between M1 macrophages and senescent NP cells through the Nrf2/STING/NF-κB pathway, thereby attenuating the progression of IDD.
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Affiliation(s)
- Peng Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Shuo Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Weijian Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Xiao Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Baichuan Wang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Binwu Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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