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Feng X, Wang C, Ji B, Qiao J, Xu Y, Zhu S, Ji Z, Zhou B, Tong W, Xu W. CD_99 G1 neutrophils modulate osteogenic differentiation of mesenchymal stem cells in the pathological process of ankylosing spondylitis. Ann Rheum Dis 2024; 83:324-334. [PMID: 37977819 PMCID: PMC10894850 DOI: 10.1136/ard-2023-224107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 10/28/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVES This study aimed to identify the types and heterogeneity of cells within the spinal enthesis and investigate the underlying mechanisms of osteogenesis. METHODS Single-cell RNA sequencing was used to identify cell populations and their gene signatures in the spinal enthesis of five patients with ankylosing spondylitis (AS) and three healthy individuals. The transcriptomes of 40 065 single cells were profiled and divided into 7 clusters: neutrophils, monocytic cells, granulomonocytic progenitor_erythroblasts, T cells, B cells, plasma cells and stromal cells. Real-time quantitative PCR, immunofluorescence, flow cytometry, osteogenesis induction, alizarin red staining, immunohistochemistry, short hairpin RNA and H&E staining were applied to validate the bioinformatics analysis. RESULTS Pseudo-time analysis showed two differentiation directions of stromal cells from the mesenchymal stem cell subpopulation MSC-C2 to two Cxcl12-abundant-reticular (CAR) cell subsets, Osteo-CAR and Adipo-CAR, within which three transcription factors, C-JUN, C-FOS and CAVIN1, were highly expressed in AS and regulated the osteogenesis of mesenchymal stem cells. A novel subcluster of early-stage neutrophils, CD99_G1, was elevated in AS. The proinflammatory characteristics of monocyte dendritic cell progenitor-recombinant adiponectin receptor 2 monocytic cells were explored. Interactions between Adipo-CAR cells, CD99_G1 neutrophils and other cell types were mapped by identifying ligand-receptor pairs, revealing the recruitment characteristics of CD99_G1 neutrophils by Adipo-CAR cells and the pathogenesis of osteogenesis induced in AS. CONCLUSIONS Our results revealed the dynamics of cell subpopulations, gene expression and intercellular interactions during AS pathogenesis. These findings provide new insights into the cellular and molecular mechanisms of osteogenesis and will benefit the development of novel therapeutic strategies.
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Affiliation(s)
- Xinzhe Feng
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Chen Wang
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Boyao Ji
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Junjie Qiao
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yihong Xu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Shanbang Zhu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhou Ji
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Bole Zhou
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Wenwen Tong
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Weidong Xu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
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Canalis E, Mocarska M, Schilling L, Jafar-Nejad P, Carrer M. Antisense oligonucleotides targeting a NOTCH3 mutation in male mice ameliorate the cortical osteopenia of lateral meningocele syndrome. Bone 2023; 177:116898. [PMID: 37704069 PMCID: PMC10591917 DOI: 10.1016/j.bone.2023.116898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/06/2023] [Accepted: 09/08/2023] [Indexed: 09/15/2023]
Abstract
Lateral Meningocele Syndrome (LMS) is a monogenic disorder associated with NOTCH3 pathogenic variants that result in the stabilization of NOTCH3 and a gain-of-function. A mouse model (Notch3em1Ecan) harboring a 6691-TAATGA mutation in the Notch3 locus that results in a functional outcome analogous to LMS exhibits cancellous and cortical bone osteopenia. We tested Notch3 antisense oligonucleotides (ASOs) specific to the Notch36691-TAATGA mutation for their effects on Notch3 downregulation and on the osteopenia of Notch3em1Ecan mice. Twenty-four mouse Notch3 mutant ASOs were designed and tested for toxic effects in vivo, and 12 safe ASOs were tested for their impact on the downregulation of Notch36691-TAATGA and Notch3 mRNA in osteoblast cultures from Notch3em1Ecan mice. Three ASOs downregulated Notch3 mutant transcripts specifically and were tested in vivo for their effects on the bone microarchitecture of Notch3em1Ecan mice. All three ASOs were well tolerated. One of these ASOs had more consistent effects in vivo and was studied in detail. The Notch3 mutant ASO downregulated Notch3 mutant transcripts in osteoblasts and bone marrow stromal cells and had no effect on other Notch receptors. The subcutaneous administration of Notch3 mutant ASO at 50 mg/Kg decreased Notch36691-TAATGA mRNA in bone without apparent toxicity; microcomputed tomography demonstrated that the ASO ameliorated the cortical osteopenia of Notch3em1Ecan mice but not the cancellous bone osteopenia. In conclusion, a Notch3 ASO that downregulates Notch3 mutant expression specifically ameliorates the cortical osteopenia in Notch3em1Ecan mice. ASOs may become useful strategies in the management of monogenic disorders affecting the skeleton.
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Affiliation(s)
- Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, CT, USA; Department of Medicine, UConn Health, Farmington, CT, USA; UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA.
| | - Magda Mocarska
- UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA
| | - Lauren Schilling
- UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA
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Liu Z, Tang Y, He L, Geng B, Lu F, He J, Yi Q, Liu X, Zhang K, Wang L, Xia Y, Jiang J. Piezo1-mediated fluid shear stress promotes OPG and inhibits RANKL via NOTCH3 in MLO-Y4 osteocytes. Channels (Austin) 2022; 16:127-136. [PMID: 35754337 DOI: 10.1080/19336950.2022.2085379] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Piezo1, a mechanosensitive ion channel, participates in a variety of biological processes in maintaining bone homeostasis. As the most abundant cells in bones of the mammals, osteocytes play an essential role in bone formation, remodeling, and bone mass maintenance. Here, by exposing MLO-Y4 osteocytes to the fluid shear stress (FSS) microenvironment, we explored the effect of Piezo1-mediated FSS on the expression of the molecules critical to the process of bone formation and resorption, Receptor Activator of Nuclear Factor-Kappa-B Ligand (RANKL) and Osteoprotegerin (OPG). It was found that 9 dyne/cm2 loading for 30 minutes showed an upregulation trend on Piezo1 when MLO-Y4 osteocytes were exposed to an FSS microenvironment. FSS promotes the expression of OPG and inhibits the expression of RANKL. The blocker of Piezo1, GsMTx4, downregulates the effect of FSS on the expression of these two molecules. In addition, NOTCH3 was involved in this process. Thus, the results demonstrated that Piezo1-mediated FSS promotes the expression of OPG and inhibits the expression of RANKL via NOTCH3 in MLO-Y4 osteocytes.
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Affiliation(s)
- Zhongcheng Liu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yuchen Tang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Liangzhi He
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Bin Geng
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Fan Lu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Jinwen He
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Qiong Yi
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Xuening Liu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Kun Zhang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Lifu Wang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yayi Xia
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Jin Jiang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
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Luo X, Wan Q, Cheng L, Xu R. Mechanisms of bone remodeling and therapeutic strategies in chronic apical periodontitis. Front Cell Infect Microbiol 2022; 12:908859. [PMID: 35937695 PMCID: PMC9353524 DOI: 10.3389/fcimb.2022.908859] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/27/2022] [Indexed: 12/19/2022] Open
Abstract
Chronic periapical periodontitis (CAP) is a typical oral disease in which periodontal inflammation caused by an odontogenic infection eventually leads to bone loss. Uncontrolled infections often lead to extensive bone loss around the root tip, which ultimately leads to tooth loss. The main clinical issue in the treatment of periapical periodontitis is the repair of jawbone defects, and infection control is the first priority. However, the oral cavity is an open environment, and the distribution of microorganisms through the mouth in jawbone defects is inevitable. The subversion of host cell metabolism by oral microorganisms initiates disease. The presence of microorganisms stimulates a series of immune responses, which in turn stimulates bone healing. Given the above background, we intended to examine the paradoxes and connections between microorganisms and jaw defect repair in anticipation of new ideas for jaw defect repair. To this end, we reviewed the microbial factors, human signaling pathways, immune cells, and cytokines involved in the development of CAP, as well as concentrated growth factor (CGF) and stem cells in bone defect repair, with the aim of understanding the impact of microbial factors on host cell metabolism to inform the etiology and clinical management of CAP.
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Affiliation(s)
| | | | - Lei Cheng
- *Correspondence: Lei Cheng, ; Ruoshi Xu,
| | - Ruoshi Xu
- *Correspondence: Lei Cheng, ; Ruoshi Xu,
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Canalis E, Carrer M, Eller T, Schilling L, Yu J. Use of antisense oligonucleotides to target Notch3 in skeletal cells. PLoS One 2022; 17:e0268225. [PMID: 35536858 PMCID: PMC9089911 DOI: 10.1371/journal.pone.0268225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/25/2022] [Indexed: 01/02/2023] Open
Abstract
Notch receptors are determinants of cell fate and function, and play an important role in the regulation of bone development and skeletal remodeling. Lateral Meningocele Syndrome (LMS) is a monogenic disorder associated with NOTCH3 pathogenic variants that result in the stabilization of NOTCH3 and a gain-of-function. LMS presents with neurological developmental abnormalities and bone loss. We created a mouse model (Notch3em1Ecan) harboring a 6691TAATGA mutation in the Notch3 locus, and heterozygous Notch3em1Ecan mice exhibit cancellous and cortical bone osteopenia. In the present work, we explored whether Notch3 antisense oligonucleotides (ASO) downregulate Notch3 and have the potential to ameliorate the osteopenia of Notch3em1Ecan mice. Notch3 ASOs decreased the expression of Notch3 wild type and Notch36691-TAATGA mutant mRNA expressed by Notch3em1Ecan mice in osteoblast cultures without evidence of cellular toxicity. The effect was specific since ASOs did not downregulate Notch1, Notch2 or Notch4. The expression of Notch3 wild type and Notch36691-TAATGA mutant transcripts also was decreased in bone marrow stromal cells and osteocytes following exposure to Notch3 ASOs. In vivo, the subcutaneous administration of Notch3 ASOs at 25 to 50 mg/Kg decreased Notch3 mRNA in the liver, heart and bone. Microcomputed tomography demonstrated that the administration of Notch3 ASOs ameliorates the cortical osteopenia of Notch3em1Ecan mice, and ASOs decreased femoral cortical porosity and increased cortical thickness and bone volume. However, the administration of Notch3 ASOs did not ameliorate the cancellous bone osteopenia of Notchem1Ecan mice. In conclusion, Notch3 ASOs downregulate Notch3 expression in skeletal cells and their systemic administration ameliorates cortical osteopenia in Notch3em1Ecan mice; as such ASOs may become useful strategies in the management of skeletal diseases affected by Notch gain-of-function.
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MESH Headings
- Abnormalities, Multiple
- Animals
- Bone Diseases, Metabolic/genetics
- Bone Diseases, Metabolic/metabolism
- Bone and Bones/diagnostic imaging
- Bone and Bones/metabolism
- Meningocele
- Mice
- Oligonucleotides, Antisense
- RNA, Messenger
- Receptor, Notch2/genetics
- Receptor, Notch2/metabolism
- Receptor, Notch3/genetics
- Receptor, Notch3/metabolism
- Receptors, Notch/genetics
- X-Ray Microtomography
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Affiliation(s)
- Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut, United States of America
- Department of Medicine, UConn Health, Farmington, Connecticut, United States of America
- The UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, United States of America
| | - Michele Carrer
- Ionis Pharmaceuticals, Inc., Carlsbad, California, United States of America
| | - Tabitha Eller
- The UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, United States of America
| | - Lauren Schilling
- The UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, United States of America
| | - Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut, United States of America
- The UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, United States of America
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