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Bertels JC, He G, Long F. Metabolic reprogramming in skeletal cell differentiation. Bone Res 2024; 12:57. [PMID: 39394187 PMCID: PMC11470040 DOI: 10.1038/s41413-024-00374-0] [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: 05/16/2024] [Revised: 09/04/2024] [Accepted: 09/05/2024] [Indexed: 10/13/2024] Open
Abstract
The human skeleton is a multifunctional organ made up of multiple cell types working in concert to maintain bone and mineral homeostasis and to perform critical mechanical and endocrine functions. From the beginning steps of chondrogenesis that prefigures most of the skeleton, to the rapid bone accrual during skeletal growth, followed by bone remodeling of the mature skeleton, cell differentiation is integral to skeletal health. While growth factors and nuclear proteins that influence skeletal cell differentiation have been extensively studied, the role of cellular metabolism is just beginning to be uncovered. Besides energy production, metabolic pathways have been shown to exert epigenetic regulation via key metabolites to influence cell fate in both cancerous and normal tissues. In this review, we will assess the role of growth factors and transcription factors in reprogramming cellular metabolism to meet the energetic and biosynthetic needs of chondrocytes, osteoblasts, or osteoclasts. We will also summarize the emerging evidence linking metabolic changes to epigenetic modifications during skeletal cell differentiation.
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Affiliation(s)
- Joshua C Bertels
- Department of Surgery, Translational Research Program in Pediatric Orthopedics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Guangxu He
- Department of Surgery, Translational Research Program in Pediatric Orthopedics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Orthopedics, The Second Xiangya Hospital, Changsha, Hunan, China
| | - Fanxin Long
- Department of Surgery, Translational Research Program in Pediatric Orthopedics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.
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2
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Young EP, Marinoff AE, Lopez-Fuentes E, Sweet-Cordero EA. Osteosarcoma through the Lens of Bone Development, Signaling, and Microenvironment. Cold Spring Harb Perspect Med 2024; 14:a041635. [PMID: 38565264 PMCID: PMC11444254 DOI: 10.1101/cshperspect.a041635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
In this work, we review the multifaceted connections between osteosarcoma (OS) biology and normal bone development. We summarize and critically analyze existing research, highlighting key areas that merit further exploration. The review addresses several topics in OS biology and their interplay with normal bone development processes, including OS cell of origin, genomics, tumor microenvironment, and metastasis. We examine the potential cellular origins of OS and how their roles in normal bone growth may contribute to OS pathogenesis. We survey the genomic landscape of OS, highlighting the developmental roles of genes frequently altered in OS. We then discuss the OS microenvironment, emphasizing the transformation of the bone niche in OS to facilitate tumor growth and metastasis. The role of stromal and immune cells is examined, including their impact on tumor progression and therapeutic response. We further provide insights into potential development-informed opportunities for novel therapeutic strategies.
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Affiliation(s)
- Elizabeth P Young
- Division of Pediatric Oncology, Department of Pediatrics, University of California San Francisco, San Francisco, California 94158, USA
| | - Amanda E Marinoff
- Division of Pediatric Oncology, Department of Pediatrics, University of California San Francisco, San Francisco, California 94158, USA
| | - Eunice Lopez-Fuentes
- Division of Pediatric Oncology, Department of Pediatrics, University of California San Francisco, San Francisco, California 94158, USA
| | - E Alejandro Sweet-Cordero
- Division of Pediatric Oncology, Department of Pediatrics, University of California San Francisco, San Francisco, California 94158, USA
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3
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Jiménez-Ortega RF, Ortega-Meléndez AI, Patiño N, Rivera-Paredez B, Hidalgo-Bravo A, Velázquez-Cruz R. The Involvement of microRNAs in Bone Remodeling Signaling Pathways and Their Role in the Development of Osteoporosis. BIOLOGY 2024; 13:505. [PMID: 39056698 PMCID: PMC11273958 DOI: 10.3390/biology13070505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024]
Abstract
Bone remodeling, crucial for maintaining the balance between bone resorption and formation, relies on the coordinated activity of osteoclasts and osteoblasts. During osteoclastogenesis, hematopoietic stem cells (HSCs) differentiate into the osteoclast lineage through the signaling pathways OPG/RANK/RANKL. On the other hand, during osteoblastogenesis, mesenchymal stem cells (MSCs) differentiate into the osteoblast lineage through activation of the signaling pathways TGF-β/BMP/Wnt. Recent studies have shown that bone remodeling is regulated by post-transcriptional mechanisms including microRNAs (miRNAs). miRNAs are small, single-stranded, noncoding RNAs approximately 22 nucleotides in length. miRNAs can regulate virtually all cellular processes through binding to miRNA-response elements (MRE) at the 3' untranslated region (3'UTR) of the target mRNA. miRNAs are involved in controlling gene expression during osteogenic differentiation through the regulation of key signaling cascades during bone formation and resorption. Alterations of miRNA expression could favor the development of bone disorders, including osteoporosis. This review provides a general description of the miRNAs involved in bone remodeling and their significance in osteoporosis development.
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Affiliation(s)
- Rogelio F. Jiménez-Ortega
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
- Unidad de Acupuntura Humana Rehabilitatoria, Universidad Estatal del Valle de Ecatepec (UNEVE), Ecatepec de Morelos 55210, Mexico
| | - Alejandra I. Ortega-Meléndez
- Unidad Académica de Ciencias de la Salud, Universidad ETAC Campus Coacalco, Coacalco de Berriozábal 55700, Mexico;
| | - Nelly Patiño
- Unidad de Citometría de Flujo (UCiF), Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
| | - Berenice Rivera-Paredez
- Centro de Investigación en Políticas, Población y Salud, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Alberto Hidalgo-Bravo
- Departamento de Medicina Genómica, Instituto Nacional de Rehabilitación, Mexico City 14389, Mexico;
| | - Rafael Velázquez-Cruz
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City 14610, Mexico;
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4
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Khayatan D, Bagherzadeh Oskouei A, Alam M, Mohammadikhah M, Badkoobeh A, Golkar M, Abbasi K, Karami S, Sayyad Soufdoost R, Kamali Hakim L, Hussain A, Tebyaniyan H, Heboyan A. Cross Talk Between Cells and the Current Bioceramics in Bone Regeneration: A Comprehensive Review. Cell Transplant 2024; 33:9636897241236030. [PMID: 38494898 PMCID: PMC10946075 DOI: 10.1177/09636897241236030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/21/2024] [Accepted: 02/12/2024] [Indexed: 03/19/2024] Open
Abstract
The conventional approach for addressing bone defects and stubborn non-unions typically involves the use of autogenous bone grafts. Nevertheless, obtaining these grafts can be challenging, and the procedure can lead to significant morbidity. Three primary treatment strategies for managing bone defects and non-unions prove resistant to conventional treatments: synthetic bone graft substitutes (BGS), a combination of BGS with bioactive molecules, and the use of BGS in conjunction with stem cells. In the realm of synthetic BGS, a multitude of biomaterials have emerged for creating scaffolds in bone tissue engineering (TE). These materials encompass biometals like titanium, iron, magnesium, and zinc, as well as bioceramics such as hydroxyapatite (HA) and tricalcium phosphate (TCP). Bone TE scaffolds serve as temporary implants, fostering tissue ingrowth and the regeneration of new bone. They are meticulously designed to enhance bone healing by optimizing geometric, mechanical, and biological properties. These scaffolds undergo continual remodeling facilitated by bone cells like osteoblasts and osteoclasts. Through various signaling pathways, stem cells and bone cells work together to regulate bone regeneration when a portion of bone is damaged or deformed. By targeting signaling pathways, bone TE can improve bone defects through effective therapies. This review provided insights into the interplay between cells and the current state of bioceramics in the context of bone regeneration.
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Affiliation(s)
- Danial Khayatan
- GI Pharmacology Interest Group, Universal Scientific Education and Research Network, Tehran, Iran
| | - Asal Bagherzadeh Oskouei
- Dental Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mostafa Alam
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Meysam Mohammadikhah
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Alborz University of Medical Sciences, Karaj, Iran
| | - Ashkan Badkoobeh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Qom University of Medical Sciences, Qom, Iran
| | - Mohsen Golkar
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamyar Abbasi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | | | | | - Ahmed Hussain
- School of Dentistry, Edmonton Clinic Health Academy, University of Alberta, Edmonton, Canada
| | - Hamid Tebyaniyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Artak Heboyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
- Department of Science and Research, Islamic Azad University, Tehran, Iran
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5
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Involvement of the Notch signaling system in alveolar bone resorption. JAPANESE DENTAL SCIENCE REVIEW 2023; 59:38-47. [PMID: 36880060 PMCID: PMC9985033 DOI: 10.1016/j.jdsr.2023.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 02/05/2023] [Accepted: 02/16/2023] [Indexed: 03/05/2023] Open
Abstract
The Notch pathway is an evolutionarily preserved signaling pathway involved in a variety of vital cell functions. Additionally, it is one of the key regulators of inflammation, and controls the differentiation and function of different cells. Moreover, it was found to be involved in skeletal development and bone remodeling process. This review provides an overview of the involvement of the Notch signaling pathway in the pathogenesis of alveolar bone resorption in different forms of pathological conditions such as apical periodontitis, periodontal disease, and peri-implantitis. In vitro and in vivo evidence have confirmed the involvement of Notch signaling in alveolar bone homeostasis. Nonetheless, Notch signaling system, along with complex network of different biomolecules are involved in pathological process of bone resorption in apical periodontitis, periodontitis, and peri-implantitis. In this regard, there is a substantial interest to control the activity of this pathway in the treatment of disorders associated with its dysregulation. This review provides knowledge on Notch signaling and outlines its functions in alveolar bone homeostasis and alveolar bone resorption. Further investigations are needed to determine whether inhibition of the Notch signaling pathways might be beneficial and safe as a novel approach in the treatment of these pathological conditions.
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Remark LH, Leclerc K, Ramsukh M, Lin Z, Lee S, Dharmalingam B, Gillinov L, Nayak VV, El Parente P, Sambon M, Atria PJ, Ali MAE, Witek L, Castillo AB, Park CY, Adams RH, Tsirigos A, Morgani SM, Leucht P. Loss of Notch signaling in skeletal stem cells enhances bone formation with aging. Bone Res 2023; 11:50. [PMID: 37752132 PMCID: PMC10522593 DOI: 10.1038/s41413-023-00283-8] [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: 01/04/2023] [Revised: 07/06/2023] [Accepted: 07/19/2023] [Indexed: 09/28/2023] Open
Abstract
Skeletal stem and progenitor cells (SSPCs) perform bone maintenance and repair. With age, they produce fewer osteoblasts and more adipocytes leading to a loss of skeletal integrity. The molecular mechanisms that underlie this detrimental transformation are largely unknown. Single-cell RNA sequencing revealed that Notch signaling becomes elevated in SSPCs during aging. To examine the role of increased Notch activity, we deleted Nicastrin, an essential Notch pathway component, in SSPCs in vivo. Middle-aged conditional knockout mice displayed elevated SSPC osteo-lineage gene expression, increased trabecular bone mass, reduced bone marrow adiposity, and enhanced bone repair. Thus, Notch regulates SSPC cell fate decisions, and moderating Notch signaling ameliorates the skeletal aging phenotype, increasing bone mass even beyond that of young mice. Finally, we identified the transcription factor Ebf3 as a downstream mediator of Notch signaling in SSPCs that is dysregulated with aging, highlighting it as a promising therapeutic target to rejuvenate the aged skeleton.
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Affiliation(s)
- Lindsey H Remark
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Kevin Leclerc
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Malissa Ramsukh
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Ziyan Lin
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Sooyeon Lee
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
- Institute of Comparative Molecular Endocrinology, Ulm University, Ulm, Germany
| | - Backialakshmi Dharmalingam
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, D-48149, Münster, Germany
| | - Lauren Gillinov
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Vasudev V Nayak
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Paulo El Parente
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Margaux Sambon
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Pablo J Atria
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Mohamed A E Ali
- Department of Pathology, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Lukasz Witek
- Biomaterials Division, New York University College of Dentistry, New York, NY, USA
- Hansjörg Wyss Department of Plastic Surgery, NYU Grossman School of Medicine, New York University, New York, NY, USA
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, USA
| | - Alesha B Castillo
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Christopher Y Park
- Department of Pathology, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Ralf H Adams
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, D-48149, Münster, Germany
| | - Aristotelis Tsirigos
- Applied Bioinformatics Laboratories, NYU Grossman School of Medicine, New York, NY, USA
| | - Sophie M Morgani
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA
| | - Philipp Leucht
- Department of Orthopaedic Surgery, NYU Robert I. Grossman School of Medicine, New York, NY, USA.
- Department of Cell Biology, NYU Robert I. Grossman School of Medicine, New York, NY, USA.
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7
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Zhou YH, Zhu JY, Guo Y, Tang HN, Wang F, Iqbal J, Wu HX, Hu N, Xiao F, Wang T, Li L, Zhou HD. Notch1 is a marker for in situ resting osteocytes in a 3-dimensional gel culture model. Connect Tissue Res 2023; 64:491-504. [PMID: 37227119 DOI: 10.1080/03008207.2023.2217271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 05/16/2023] [Indexed: 05/26/2023]
Abstract
PURPOSE Osteocytes in vivo exhibit different functional states, but no specific marker to distinguish these is currently available. MATERIALS AND METHODS To simulate the differentiation process of pre-osteoblasts to osteocytes in vitro, MC3T3-E1 cells were cultured on type I collagen gel and a three-dimensional (3D) culture system was established. The Notch expression of osteocyte-like cells in 3D culture system was compared with that of in situ osteocytes in bone tissues. RESULTS Immunohistochemistry demonstrated that Notch1 was not detected in "resting" in situ osteocytes, but was detected in normal cultured osteocyte-like cell line MLO-Y4. Osteocytes obtained from conventional osteogenic-induced osteoblasts and long-term cultured MLO-Y4 cells could not replicate the Notch1 expression pattern from in situ osteocytes. From day 14-35 of osteogenic induction, osteoblasts in 3D culture system gradually migrated into the gel to form canaliculus-like structures similar to bone canaliculus. On day 35, stellate-shaped osteocyte-like cells were observed, and expression of DMP1 and SOST, but not Runx2, was detected. Notch1 was not detected by immunohistochemistry, and Notch1 mRNA level was not significantly different from that of in situ osteocytes. In MC3T3-E1 cells, down-regulation of Notch2 increased Notch1, Notch downstream genes (β-catenin and Nfatc1), and Dmp1. In MLO-Y4 cells, Notch2 decreased after Notch1 siRNA transfection. Downregulation of Notch1 or Notch2 decreased Nfatc1, β-catenin, and Dmp1, and increased Sost. CONCLUSIONS We established "resting state" osteocytes using an in vitro 3D model. Notch1 can be a useful marker to help differentiate the functional states of osteocytes (activated vs. resting state).
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Affiliation(s)
- Ying-Hui Zhou
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
- Department of Stomatology, the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Jia-Yu Zhu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
- Department of Pathology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yue Guo
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
- Department of Stomatology, the Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Hao-Neng Tang
- Department of Laboratory Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Fang Wang
- Departments of Endocrinology and Metabolism, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi, China
| | - Junaid Iqbal
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Hui-Xuan Wu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Nan Hu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Fen Xiao
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Ting Wang
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Long Li
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Hou-De Zhou
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory for Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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Wang Z, Yi X, Jian C, Qi B, Liu Q, Li Z, Yu A. Sustained notch signaling inhibition with a gamma-secretase inhibitor prevents traumatic heterotopic ossification. J Orthop Translat 2023; 42:31-42. [PMID: 37575153 PMCID: PMC10415638 DOI: 10.1016/j.jot.2023.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/23/2023] [Accepted: 06/30/2023] [Indexed: 08/15/2023] Open
Abstract
Background Traumatic heterotopic ossification (THO) is a devastating sequela following traumatic injuries and orthopedic surgeries. To date, the exact molecular mechanism of THO formation is still unclear, which hinders the development of effective treatments. The process of THO formation is believed to recapitulate a series of spatiotemporal cellular and signaling events that occur during skeletal development. The Notch signaling pathway is a critical genetic regulator in embryological bone development and fracture healing. However, few data are available concerning whether Notch signaling regulates THO development and maturation. Methods We firstly detected the expressions of Notch target genes in both mouse and human THO samples with quantitative RT-PCR and immunohistochemistry (IHC). Then, tissue-resident mesenchymal progenitor cells (TMPCs) were isolated, and the abilities of the proliferation and osteogenic and chondrogenic differentiation of TMPCs were examined under the intervention of the gamma-secretase inhibitor-DAPT at different time points. Finally, DAPT was also administrated in THO mice by burn and Achilles tenotomy injury, and ectopic cartilage and bone formation were monitored by histology and micro-CT. Results Several Notch target genes were upregulated in both mouse and human THO tissues. Sustained Notch signaling inhibition by DAPT reduced proliferation, osteogenic and chondrogenic differentiation of TMPCs in a time-dependent manner. Moreover, DAPT administration within 3 weeks could inhibit ectopic cartilage and bone formation in a mouse THO model without affecting the total body bone mass. Conclusions The Notch signaling serves as an important therapeutic target during THO formation. And sustained gamma-secretase inhibition by DAPT has great potential in repressing chondrogenic and osteogenic differentiation of TMPCs, as well as inhibited ectopic cartilage and bone formation in vivo. The translational potential of this article Sustained Notch inhibition via systemic DAPT (or other similar gamma-secretase inhibitors) administration has promising clinical utility for inhibiting THO formation, providing new insight into THO prophylaxis and treatment.
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Affiliation(s)
- Zheng Wang
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Xinzeyu Yi
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Chao Jian
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Baiwen Qi
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Qiaoyun Liu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Zonghuan Li
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
| | - Aixi Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Clinical Medical Research Center of Trauma and Microsurgery, Wuhan, Hubei, China
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Gong W, Li M, Zhao L, Wang P, Wang X, Wang B, Liu X, Tu X. Sustained release of a highly specific GSK3β inhibitor SB216763 in the PCL scaffold creates an osteogenic niche for osteogenesis, anti-adipogenesis, and potential angiogenesis. Front Bioeng Biotechnol 2023; 11:1215233. [PMID: 37576993 PMCID: PMC10419179 DOI: 10.3389/fbioe.2023.1215233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/20/2023] [Indexed: 08/15/2023] Open
Abstract
The safe and effective use of Wnt signaling is a hot topic in developing osteogenic drugs. SB216763 (S33) is a widely used highly specific GSK3β inhibitor. Here, we show that S33 initiates canonical Wnt signaling by inhibiting GSK3β activity in the bone marrow stromal cell line ST2 and increases osteoblast marker alkaline phosphatase activity, osteoblast marker gene expression including Alpl, Col1α1, and Runx2, promoting osteogenic differentiation and mineralization of ST2 cells. In addition, S33 suppressed the expression of adipogenic transcription factors Pparg and Cebpa in ST2 cells to suppress adipogenesis. ICRT-14, a specific transcriptional inhibitor of Wnt signaling, reversed the effects of S33 on the differentiation of ST2 cells. S33 also increased the expression of osteoclast cytokines RANKL and Opg but decreased the RANKL/Opg ratio and had the potential to inhibit osteoclast differentiation. In addition, we printed the PSCI3D (polycaprolactone, S33, cell-integrated 3D) scaffolds using a newly established integrated 3D printing system for hard materials and cells. S33 sustained release in the hydrogel of the scaffold with 25.4% release on day 1% and 81.7% release over 7 days. Cells in the scaffolds had good cell viability. The ratio of live/dead cells remained above 94% for 7 days, while the cells in the scaffolds proliferated linearly, and the proliferative activity of the PSCI3D scaffold group increased 1.4-fold and 1.7-fold on days 4 and 7, respectively. Similarly, in PSCI3D scaffolds, osteogenic differentiation of st2 cells was increased. The alkaline phosphatase activity increased 1.4- and 4.0-fold on days 7 and 14, respectively, and mineralization increased 1.7-fold at 21 days. In addition, PSCI3D conditioned medium promoted migration and tubulogenesis of HUVECs, and S33 upregulated the expression of Vegfa, a key factor in angiogenesis. In conclusion, our study suggests that S33 functions in osteogenesis, anti-adipogenesis, and potential inhibition of osteoclast differentiation. And the sustained release of S33 in PSCI3D scaffolds creates a safe osteogenic niche, which promotes cell proliferation, osteogenesis, and angiogenesis and has application prospects.
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Affiliation(s)
- Weimin Gong
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Molin Li
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Lizhou Zhao
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Pengtao Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Xiaofang Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Bo Wang
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Xing Liu
- Department of Orthopedics, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaolin Tu
- Laboratory of Skeletal Development and Regeneration, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
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10
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Tang T, Zhu Z, He Z, Wang F, Chen H, Liu S, Zhan M, Wang J, Tian W, Chen D, Wu X, Liu X, Zhou Z, Liu S. DLX5 regulates the osteogenic differentiation of spinal ligaments cells derived from ossification of the posterior longitudinal ligament patients via NOTCH signaling. JOR Spine 2023; 6:e1247. [PMID: 37361333 PMCID: PMC10285757 DOI: 10.1002/jsp2.1247] [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: 11/14/2022] [Revised: 01/01/2023] [Accepted: 01/08/2023] [Indexed: 01/30/2023] Open
Abstract
Background Ossification of the posterior longitudinal ligaments (OPLL) is common disorder characterized by heterotopic ossification of the spinal ligaments. Mechanical stimulation (MS) plays an important role in OPLL. DLX5 is an essential transcription factor required for osteoblast differentiation. However, the role of DLX5 during in OPLL is unclear. This study aims to investigate whether DLX5 is associated with OPLL progression under MS. Methods Stretch stimulation was applied to spinal ligaments cells derived from OPLL (OPLL cells) and non-OPLL (non-OPLL cells) patients. Expression of DLX5 and osteogenesis-related genes were determined by quantitative real-time polymerase chain reaction and Western blot. The osteogenic differentiation ability of the cells was measured using alkaline phosphatase (ALP) staining and alizarin red staining. The protein expression of DLX5 in the tissues and the nuclear translocation of NOTCH intracellular domain (NICD) was examined by immunofluorescence. Results Compared with non-OPLL cells, OPLL cells expressed higher levels of DLX5 in vitro and vivo (p < 0.01). Upregulated expression of DLX5 and osteogenesis-related genes (OSX, RUNX2, and OCN) were observed in OPLL cells induced with stretch stimulation and osteogenic medium, whereas there was no change in the non-OPLL cells (p < 0.01). Cytoplasmic NICD protein translocated from the cytoplasm to the nucleus inducing DLX5 under stretch stimulation, which was reduced by the NOTCH signaling inhibitors (DAPT) (p < 0.01). Conclusions These data suggest that DLX5 play a critical role in MS-induced progression of OPLL through NOTCH signaling, which provides a new insight into the pathogenesis of OPLL.
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Affiliation(s)
- Tao Tang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Zhengya Zhu
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Zhongyuan He
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Fuan Wang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Hongkun Chen
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Shengkai Liu
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Mingbin Zhan
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Jianmin Wang
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
| | - Wei Tian
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Xinbao Wu
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan HospitalBeijingChina
| | - Xizhe Liu
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Zhiyu Zhou
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Shaoyu Liu
- Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury, Department of Orthopaedic Surgery, The Seventh Affiliated HospitalSun Yat‐sen UniversityShenzhenChina
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Orthopaedic Research Institute/Department of Spinal SurgeryThe First Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
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11
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EGFL7 Secreted By Human Bone Mesenchymal Stem Cells Promotes Osteoblast Differentiation Partly Via Downregulation Of Notch1-Hes1 Signaling Pathway. Stem Cell Rev Rep 2023; 19:968-982. [PMID: 36609902 DOI: 10.1007/s12015-022-10503-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Epidermal growth factor-like domain protein 7 (EGFL7) is a secreted protein that is differentially expressed in the bone microenvironment; however, the effect of EGFL7 on the osteogenesis of human bone marrow mesenchymal stem cells (hBMSCs) is largely unknown. METHODS EGFL7 expression in the fracture microenvironment was analyzed based on the Gene Expression Omnibus (GEO) database. Knockdown of EGFL7 by small interfering RNA (siRNA) and in vitro stimulation with recombinant human EGFL7 (rhEGFL7) protein were used to assess alterations in downstream signaling and changes in the osteogenic differentiation and proliferation of hBMSCs. A γ-secretase inhibitor was used to further explore whether inhibition of Notch signaling rescued the osteogenic-inhibitory effect of EGFL7 knockdown in hBMSCs. A femoral defect model was established to verify the effect of recombinant mouse EGFL7 on bone healing in vivo. RESULTS EGFL7 expression increased during hBMSC osteogenesis. Knockdown of EGFL7 impaired hBMSC osteogenesis and activated Notch1/NICD/Hes1 signaling. rhEGFL7 promoted hBMSC osteogenesis and downregulated Notch1 signaling. The osteoblast-inhibitory effect of EGFL7 knockdown was rescued by Notch1 signaling inhibition. Recombinant EGFL7 led to enhanced bone healing in mice with femoral defects. CONCLUSIONS EGFL7 promotes osteogenesis of hBMSCs partly via downregulation of Notch1 signaling.
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12
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Jin F, Zhu Y, Liu M, Wang R, Cui Y, Wu Y, Liu G, Wang Y, Wang X, Ren Z. Babam2 negatively regulates osteoclastogenesis by interacting with Hey1 to inhibit Nfatc1 transcription. Int J Biol Sci 2022; 18:4482-4496. [PMID: 35864959 PMCID: PMC9295054 DOI: 10.7150/ijbs.72487] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/26/2022] [Indexed: 11/21/2022] Open
Abstract
Osteoclast-mediated excessive bone resorption was highly related to diverse bone diseases including osteoporosis. BRISC and BRCA1-A complex member 2 (Babam2) was an evolutionarily conserved protein that is highly expressed in bone tissues. However, whether Babam2 is involved in osteoclast formation is still unclear. In this study, we identify Babam2 as an essential negative regulator of osteoclast formation. We demonstrate that Babam2 knockdown significantly accelerated osteoclast formation and activity, while Babam2 overexpression blocked osteoclast formation and activity. Moreover, we demonstrate that the bone resorption activity was significantly downregulated in Babam2-transgenic mice as compared with wild-type littermates. Consistently, the bone mass of the Babam2-transgenic mice was increased. Furthermore, we found that Babam2-transgenic mice were protected from LPS-induced bone resorption activation and thus reduced the calvarial bone lesions. Mechanistically, we demonstrate that the inhibitory effects of Babam2 on osteoclast differentiation were dependent on Hey1. As silencing Hey1 largely diminished the effects of Babam2 on osteoclastogenesis. Finally, we show that Babam2 interacts with Hey1 to inhibit Nfatc1 transcription. In sum, our results suggested that Babam2 negatively regulates osteoclastogenesis and bone resorption by interacting with Hey1 to inhibit Nfatc1 transcription. Therefore, targeting Babam2 may be a novel therapeutic approach for osteoclast-related bone diseases.
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Affiliation(s)
- Fujun Jin
- Key Laboratory of Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing 100191, China.,Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yexuan Zhu
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Meijing Liu
- Key Laboratory of Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing 100191, China
| | - Rongze Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yi Cui
- Key Laboratory of Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing 100191, China
| | - Yanting Wu
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Gang Liu
- Department of Rehabilitation Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xiaogang Wang
- Key Laboratory of Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing 100191, China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research and Development Center, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
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13
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Jing Z, Liang Z, Yang L, Du W, Yu T, Tang H, Li C, Wei W. Bone formation and bone repair: The roles and crosstalk of osteoinductive signaling pathways. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Notch2 Blockade Mitigates Methotrexate Chemotherapy-Induced Bone Loss and Marrow Adiposity. Cells 2022; 11:cells11091521. [PMID: 35563828 PMCID: PMC9103078 DOI: 10.3390/cells11091521] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/17/2022] Open
Abstract
Childhood cancer methotrexate (MTX) chemotherapy often causes bone growth impairments, bone loss, and increased risks of fractures during or after treatment, for which the pathobiology is unclear and there is a lack of specific treatment. Our time course analyses of long bones from rats receiving intensive MTX treatment (mimicking a clinical protocol) found decreased trabecular bone volume, increased osteoclast formation and activity, increased adipogenesis in the expense of osteogenesis from the bone marrow stromal cells at days 6 and 9 following the first of five daily MTX doses. For exploring potential mechanisms, PCR array expression of 91 key factors regulating bone homeostasis was screened with the bone samples, which revealed MTX treatment-induced upregulation of Notch receptor NOTCH2, activation of which is known to be critical in skeletal development and bone homeostasis. Consistently, increased Notch2 activation in bones of MTX-treated rats was confirmed, accompanied by increased expression of Notch2 intracellular domain protein and Notch target genes HEY1, HES1 and HEYL. To confirm the roles of Notch2 signalling, a neutralising anti-Notch2 antibody or a control IgG was administered to rats during MTX treatment. Microcomputed tomography analyses demonstrated that trabecular bone volume was preserved by MTX+anti-Notch2 antibody treatment. Anti-Notch2 antibody treatment ameliorated MTX treatment-induced increases in osteoclast density and NFATc1 and RANKL expression, and attenuated MTX-induced bone marrow adiposity via regulating Wnt/β-catenin signalling and PPARγ expression. Thus, Notch2 signalling plays an important role in mediating MTX treatment-induced bone loss and bone marrow adiposity, and targeting Notch2 could be a potential therapeutic option.
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15
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Shabir U, Bhat IA, Pir BA, Bharti MK, Pandey S, SaiKumar G, Sarkar M, Thirupathi Y, Chandra V, Sonewane A, Sharma GT. Smad4 and γ-secretase knock-down effect on osteogenic differentiation mediated via Runx2 in canine mesenchymal stem cells. Res Vet Sci 2022; 145:116-124. [DOI: 10.1016/j.rvsc.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 01/14/2022] [Accepted: 02/02/2022] [Indexed: 10/19/2022]
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16
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Transcriptional responses of skeletal stem/progenitor cells to hindlimb unloading and recovery correlate with localized but not systemic multi-systems impacts. NPJ Microgravity 2021; 7:49. [PMID: 34836964 PMCID: PMC8626488 DOI: 10.1038/s41526-021-00178-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022] Open
Abstract
Disuse osteoporosis (DO) results from mechanical unloading of weight-bearing bones and causes structural changes that compromise skeletal integrity, leading to increased fracture risk. Although bone loss in DO results from imbalances in osteoblast vs. osteoclast activity, its effects on skeletal stem/progenitor cells (SSCs) is indeterminate. We modeled DO in mice by 8 and 14 weeks of hindlimb unloading (HU) or 8 weeks of unloading followed by 8 weeks of recovery (HUR) and monitored impacts on animal physiology and behavior, metabolism, marrow adipose tissue (MAT) volume, bone density and micro-architecture, and bone marrow (BM) leptin and tyrosine hydroxylase (TH) protein expression, and correlated multi-systems impacts of HU and HUR with the transcript profiles of Lin-LEPR+ SSCs and mesenchymal stem cells (MSCs) purified from BM. Using this integrative approach, we demonstrate that prolonged HU induces muscle atrophy, progressive bone loss, and MAT accumulation that paralleled increases in BM but not systemic leptin levels, which remained low in lipodystrophic HU mice. HU also induced SSC quiescence and downregulated bone anabolic and neurogenic pathways, which paralleled increases in BM TH expression, but had minimal impacts on MSCs, indicating a lack of HU memory in culture-expanded populations. Although most impacts of HU were reversed by HUR, trabecular micro-architecture remained compromised and time-resolved changes in the SSC transcriptome identified various signaling pathways implicated in bone formation that were unresponsive to HUR. These findings indicate that HU-induced alterations to the SSC transcriptome that persist after reloading may contribute to poor bone recovery.
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17
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Shi Y. The investigation of energy metabolism in osteoblasts and osteoclasts. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2021; 39:501-509. [PMID: 34636196 DOI: 10.7518/hxkq.2021.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The maintenance of bone homeostasis is critical for bone health. It is vulnerable to cause bone loss, even severely osteoporosis when the balance between bone formation and absorption is interrupted. Growing evidence has shown that energy metabolism disorders, such as abnormal glucose metabolism, irregular amino acid metabolism, and aberrant lipid metabolism, can damage bone homeostasis, causing or exacerbating bone mass loss and osteoporosis-related fractures. Here, we summarize the studies of energy metabolism in osteoblasts and osteoclasts and provide a better appreciation of how energy metabolism, especially glucose metabolism maintains bone homeostasis. With this knowledge, new avenues will be unraveled to understand and cue bone-related diseases such as osteoporosis.
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Affiliation(s)
- Yu Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu 610041, China
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18
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Shen J, Fu B, Li Y, Wu Y, Sang H, Zhang H, Lin H, Liu H, Huang W. E3 Ubiquitin Ligase-Mediated Regulation of Osteoblast Differentiation and Bone Formation. Front Cell Dev Biol 2021; 9:706395. [PMID: 34513836 PMCID: PMC8430030 DOI: 10.3389/fcell.2021.706395] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/03/2021] [Indexed: 12/13/2022] Open
Abstract
The ubiquitin–proteasome system (UPS) is an essential pathway that regulates the homeostasis and function of intracellular proteins and is a crucial protein-degradation system in osteoblast differentiation and bone formation. Abnormal regulation of ubiquitination leads to osteoblast differentiation disorders, interfering with bone formation and ultimately leading to osteoporosis. E3 ubiquitin ligases (E3) promote addition of a ubiquitin moiety to substrate proteins, specifically recognizing the substrate and modulating tyrosine kinase receptors, signaling proteins, and transcription factors involved in the regulation of osteoblast proliferation, differentiation, survival, and bone formation. In this review, we summarize current progress in the understanding of the function and regulatory effects of E3 ligases on the transcription factors and signaling pathways that regulate osteoblast differentiation and bone formation. A deep understanding of E3 ligase-mediated regulation of osteoblast differentiation provides a scientific rationale for the discovery and development of novel E3-targeting therapeutic strategies for osteoporosis.
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Affiliation(s)
- Jianlin Shen
- Guangdong Innovation Platform for Translation of 3D Printing Application, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Affiliated Hospital of Putian University, Putian, China
| | - Bowen Fu
- Guangdong Innovation Platform for Translation of 3D Printing Application, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Yanfang Li
- Department of Pediatric Surgery, Affiliated Hospital of Putian University, Putian, China
| | - Yanjiao Wu
- Department of Orthopedics, Shunde Hospital of Southern Medical University, Guangzhou, China
| | - Hongxun Sang
- Department of Orthopedics, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Heshi Zhang
- Department of Vessel and Breast, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Haibin Lin
- Department of Orthopedics, Affiliated Hospital of Putian University, Putian, China
| | - Huan Liu
- Department of Orthopedics, Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Wenhua Huang
- Guangdong Innovation Platform for Translation of 3D Printing Application, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Guangdong Engineering Research Center for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Guangdong Medical University, Zhanjiang, China
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19
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Mesenchymal Stem Cells, Bioactive Factors, and Scaffolds in Bone Repair: From Research Perspectives to Clinical Practice. Cells 2021; 10:cells10081925. [PMID: 34440694 PMCID: PMC8392210 DOI: 10.3390/cells10081925] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/24/2021] [Accepted: 07/27/2021] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stem cell-based therapies are promising tools for bone tissue regeneration. However, tracking cells and maintaining them in the site of injury is difficult. A potential solution is to seed the cells onto a biocompatible scaffold. Construct development in bone tissue engineering is a complex step-by-step process with many variables to be optimized, such as stem cell source, osteogenic molecular factors, scaffold design, and an appropriate in vivo animal model. In this review, an MSC-based tissue engineering approach for bone repair is reported. Firstly, MSC role in bone formation and regeneration is detailed. Secondly, MSC-based bone tissue biomaterial design is analyzed from a research perspective. Finally, examples of animal preclinical and human clinical trials involving MSCs and scaffolds in bone repair are presented.
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20
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Guasto A, Cormier-Daire V. Signaling Pathways in Bone Development and Their Related Skeletal Dysplasia. Int J Mol Sci 2021; 22:4321. [PMID: 33919228 PMCID: PMC8122623 DOI: 10.3390/ijms22094321] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
Bone development is a tightly regulated process. Several integrated signaling pathways including HH, PTHrP, WNT, NOTCH, TGF-β, BMP, FGF and the transcription factors SOX9, RUNX2 and OSX are essential for proper skeletal development. Misregulation of these signaling pathways can cause a large spectrum of congenital conditions categorized as skeletal dysplasia. Since the signaling pathways involved in skeletal dysplasia interact at multiple levels and have a different role depending on the time of action (early or late in chondrogenesis and osteoblastogenesis), it is still difficult to precisely explain the physiopathological mechanisms of skeletal disorders. However, in recent years, significant progress has been made in elucidating the mechanisms of these signaling pathways and genotype-phenotype correlations have helped to elucidate their role in skeletogenesis. Here, we review the principal signaling pathways involved in bone development and their associated skeletal dysplasia.
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Affiliation(s)
- Alessandra Guasto
- Imagine Institute, Université de Paris, Clinical Genetics, INSERM UMR 1163, Necker Enfants Malades Hospital, 75015 Paris, France;
| | - Valérie Cormier-Daire
- Imagine Institute, Université de Paris, Clinical Genetics, INSERM UMR 1163, Necker Enfants Malades Hospital, 75015 Paris, France;
- Centre de Référence Pour Les Maladies Osseuses Constitutionnelles, Service de Génétique Clinique, AP-HP, Hôpital Necker-Enfants Malades, 75015 Paris, France
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21
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Gao J, Fan L, Zhao L, Su Y. The interaction of Notch and Wnt signaling pathways in vertebrate regeneration. CELL REGENERATION (LONDON, ENGLAND) 2021; 10:11. [PMID: 33791915 PMCID: PMC8012441 DOI: 10.1186/s13619-020-00072-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022]
Abstract
Regeneration is an evolutionarily conserved process in animal kingdoms, however, the regenerative capacities differ from species and organ/tissues. Mammals possess very limited regenerative potential to replace damaged organs, whereas non-mammalian species usually have impressive abilities to regenerate organs. The regeneration process requires proper spatiotemporal regulation from key signaling pathways. The canonical Notch and Wnt signaling pathways, two fundamental signals guiding animal development, have been demonstrated to play significant roles in the regeneration of vertebrates. In recent years, increasing evidence has implicated the cross-talking between Notch and Wnt signals during organ regeneration. In this review, we summarize the roles of Notch signaling and Wnt signaling during several representative organ regenerative events, emphasizing the functions and molecular bases of their interplay in these processes, shedding light on utilizing these two signaling pathways to enhance regeneration in mammals and design legitimate therapeutic strategies.
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Affiliation(s)
- Junying Gao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China.,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Lixia Fan
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China.,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Long Zhao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China. .,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China.
| | - Ying Su
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China. .,College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong, China.
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22
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Novak S, Roeder E, Sinder BP, Adams DJ, Siebel CW, Grcevic D, Hankenson KD, Matthews BG, Kalajzic I. Modulation of Notch1 signaling regulates bone fracture healing. J Orthop Res 2020; 38:2350-2361. [PMID: 32141629 PMCID: PMC7483882 DOI: 10.1002/jor.24650] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/30/2020] [Accepted: 02/22/2020] [Indexed: 02/04/2023]
Abstract
Fracture healing involves interactions of different cell types, driven by various growth factors, and signaling cascades. Periosteal mesenchymal progenitor cells give rise to the majority of osteoblasts and chondrocytes in a fracture callus. Notch signaling has emerged as an important regulator of skeletal cell proliferation and differentiation. We investigated the effects of Notch signaling during the fracture healing process. Increased Notch signaling in osteochondroprogenitor cells driven by overexpression of Notch1 intracellular domain (NICD1) (αSMACreERT2 mice crossed with Rosa-NICD1) during fracture resulted in less cartilage, more mineralized callus tissue, and stronger and stiffer bones after 3 weeks. Periosteal cells overexpressing NICD1 showed increased proliferation and migration in vitro. In vivo data confirmed that increased Notch1 signaling caused expansion of alpha-smooth muscle actin (αSMA)-positive cells and their progeny including αSMA-derived osteoblasts in the callus without affecting osteoclast numbers. In contrast, anti-NRR1 antibody treatment to inhibit Notch1 signaling resulted in increased callus cartilage area, reduced callus bone mass, and reduced biomechanical strength. Our study shows a positive effect of induced Notch1 signaling on the fracture healing process, suggesting that stimulating the Notch pathway could be beneficial for fracture repair.
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Affiliation(s)
- Sanja Novak
- Department of Reconstructive Sciences, UConn Health, Farmington, CT, USA
| | - Emilie Roeder
- Department of Reconstructive Sciences, UConn Health, Farmington, CT, USA
| | - Benjamin P. Sinder
- Department of Reconstructive Sciences, UConn Health, Farmington, CT, USA
| | - Douglas J. Adams
- Department of Orthopedic Surgery, UConn Health, Farmington, CT, USA;,Department of Orthopedics, University of Colorado, Aurora, CO, USA
| | | | - Danka Grcevic
- Department of Physiology and Immunology, School of Medicine, University of Zagreb, Zagreb 10000, Croatia
| | - Kurt D. Hankenson
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Brya G. Matthews
- Department of Reconstructive Sciences, UConn Health, Farmington, CT, USA;,Department of Molecular Medicine and Pathology, University of Auckland, Auckland 1023, New Zealand
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, UConn Health, Farmington, CT, USA
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23
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Zohorsky K, Mequanint K. Designing Biomaterials to Modulate Notch Signaling in Tissue Engineering and Regenerative Medicine. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:383-410. [PMID: 33040694 DOI: 10.1089/ten.teb.2020.0182] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The design of cell-instructive biomaterials for tissue engineering and regenerative medicine is at a crossroads. Although the conventional tissue engineering approach is top-down (cells seeded to macroporous scaffolds and mature to form tissues), bottom-up tissue engineering strategies are becoming appealing. With such developments, we can study cell signaling events, thus enabling functional tissue assembly in physiologic and diseased models. Among many important signaling pathways, the Notch signaling pathway is the most diverse in its influence during tissue morphogenesis and repair following injury. Although Notch signaling is extensively studied in developmental biology and cancer biology, our knowledge of designing biomaterial-based Notch signaling platforms and incorporating Notch signaling components into engineered tissue systems is limited. By incorporating Notch signaling to tissue engineering scaffolds, we can direct cell-specific responses and improve engineered tissue maturation. This review will discuss recent progress in the development of Notch signaling biomaterials as a promising target to control cellular fate decisions, including the influences of ligand identity, biophysical material cues, ligand presentation strategies, and mechanotransduction. Notch signaling is consequently of interest to direct, control, and reprogram cellular behavior on a biomaterial surface. We anticipate that discussions in this article will allow for enhanced knowledge and insight into designing Notch targeted biomaterials for various tissue engineering and cell fate determinations. Impact statement Notch signaling is recognized as an important pathway in tissue engineering and regenerative medicine; however, there is no systematic review on this topic. The comprehensive review and perspectives presented here provide an in-depth discussion on ligand presentation strategies both in 2D and in 3D cell culture environments involving biomaterials/scaffolds. In addition, this review article provides insight into the challenges in designing cell surrogate biomaterials capable of providing Notch signals. To the best of the authors' knowledge, this is the first review relevant to the fields of tissue engineering.
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Affiliation(s)
- Kathleen Zohorsky
- School of Biomedical Engineering and The University of Western Ontario, London, Canada
| | - Kibret Mequanint
- School of Biomedical Engineering and The University of Western Ontario, London, Canada.,Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Canada
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24
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Salhotra A, Shah HN, Levi B, Longaker MT. Mechanisms of bone development and repair. Nat Rev Mol Cell Biol 2020; 21:696-711. [PMID: 32901139 DOI: 10.1038/s41580-020-00279-w] [Citation(s) in RCA: 458] [Impact Index Per Article: 114.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2020] [Indexed: 12/19/2022]
Abstract
Bone development occurs through a series of synchronous events that result in the formation of the body scaffold. The repair potential of bone and its surrounding microenvironment - including inflammatory, endothelial and Schwann cells - persists throughout adulthood, enabling restoration of tissue to its homeostatic functional state. The isolation of a single skeletal stem cell population through cell surface markers and the development of single-cell technologies are enabling precise elucidation of cellular activity and fate during bone repair by providing key insights into the mechanisms that maintain and regenerate bone during homeostasis and repair. Increased understanding of bone development, as well as normal and aberrant bone repair, has important therapeutic implications for the treatment of bone disease and ageing-related degeneration.
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Affiliation(s)
- Ankit Salhotra
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Harsh N Shah
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Benjamin Levi
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA.
| | - Michael T Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA. .,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA.
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25
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Expanding cancer predisposition genes with ultra-rare cancer-exclusive human variations. Sci Rep 2020; 10:13462. [PMID: 32778766 PMCID: PMC7418036 DOI: 10.1038/s41598-020-70494-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 07/28/2020] [Indexed: 12/18/2022] Open
Abstract
It is estimated that up to 10% of cancer incidents are attributed to inherited genetic alterations. Despite extensive research, there are still gaps in our understanding of genetic predisposition to cancer. It was theorized that ultra-rare variants partially account for the missing heritable component. We harness the UK BioBank dataset of ~ 500,000 individuals, 14% of which were diagnosed with cancer, to detect ultra-rare, possibly high-penetrance cancer predisposition variants. We report on 115 cancer-exclusive ultra-rare variations and nominate 26 variants with additional independent evidence as cancer predisposition variants. We conclude that population cohorts are valuable source for expanding the collection of novel cancer predisposition genes.
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26
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Chotiyarnwong P, McCloskey EV. Pathogenesis of glucocorticoid-induced osteoporosis and options for treatment. Nat Rev Endocrinol 2020; 16:437-447. [PMID: 32286516 DOI: 10.1038/s41574-020-0341-0] [Citation(s) in RCA: 224] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/24/2020] [Indexed: 12/31/2022]
Abstract
Glucocorticoids are widely used to suppress inflammation or the immune system. High doses and long-term use of glucocorticoids lead to an important and common iatrogenic complication, glucocorticoid-induced osteoporosis, in a substantial proportion of patients. Glucocorticoids mainly increase bone resorption during the initial phase (the first year of treatment) by enhancing the differentiation and maturation of osteoclasts. Glucocorticoids also inhibit osteoblastogenesis and promote apoptosis of osteoblasts and osteocytes, resulting in decreased bone formation during long-term use. Several indirect effects of glucocorticoids on bone metabolism, such as suppression of production of insulin-like growth factor 1 or growth hormone, are involved in the pathogenesis of glucocorticoid-induced osteoporosis. Fracture risk assessment for all patients with long-term use of oral glucocorticoids is required. Non-pharmacological interventions to manage the risk of fracture should be prescribed to all patients, while pharmacological management is reserved for patients who have increased fracture risk. Various treatment options can be used, ranging from bisphosphonates to denosumab, as well as teriparatide. Finally, appropriate monitoring during treatment is also important.
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Affiliation(s)
- Pojchong Chotiyarnwong
- Department of Orthopaedic Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Academic Unit of Bone Metabolism, Department of Oncology and Metabolism, The Mellanby Centre For Bone Research, University of Sheffield, Sheffield, UK
| | - Eugene V McCloskey
- Academic Unit of Bone Metabolism, Department of Oncology and Metabolism, The Mellanby Centre For Bone Research, University of Sheffield, Sheffield, UK.
- Centre for Metabolic Diseases, University of Sheffield Medical School, Beech Hill Road, Sheffield, UK.
- Centre for Integrated Research into Musculoskeletal Ageing, University of Sheffield Medical School, Sheffield, UK.
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27
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Yu F, Wu F, Li F, Liao X, Wang Y, Li X, Wang C, Shi Y, Ye L. Wnt7b-induced Sox11 functions enhance self-renewal and osteogenic commitment of bone marrow mesenchymal stem cells. Stem Cells 2020; 38:1020-1033. [PMID: 32346881 DOI: 10.1002/stem.3192] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 02/05/2023]
Abstract
As a profoundly anabolic regulator of bone, Wnt7b is well acknowledged to enhance osteoblast activities. Here, we report that bone marrow mesenchymal stem cells (BMSCs) are another important population responding to Wnt7b. In this study, we systematically investigated the in vivo role of Wnt7b in BMSCs using transgenic mice, high-throughput RNA-seq, immunohistochemistry, RT-qPCR, and in situ hybridization. These methods led us to uncover that Sox11 is induced via Wnt7b in BMSCs. Colony formation assay, flow cytometry, EdU incorporation labeling, RT-qPCR, and Western blot were conducted to detect the self-renewal capacity of BMSCs. Alkaline phosphatase staining, alizarin red staining, and ex vivo BMSCs transplantation were utilized to detect the osteogenic ability of BMSCs. ChIP-qPCR, shRNAs, and immunofluorescence staining were utilized to investigate the underlying mechanisms. Consequently, bone-derived Wnt7b was found to decrease in osteoporosis and elevate in bone fracture healing. During bone fracture healing, Wnt7b was particularly expressed in the mesenchymal cells residing within healing frontiers. RNA-seq data of Wnt7b-overexpressed bones uncovered the significant upregulation of Sox11. Histological results further unveiled that Sox11 is specifically increased in BMSCs. Wnt7b-induced Sox11 was demonstrated to reinforce both self-renewal and osteogenic differentiation of BMSCs. Mechanistically, Wnt7b activates the Ca2+ -dependent Nfatc1 signaling to directly induce Sox11 transcription, which in turn activates the transcriptions of both proliferation-related transcription factors (Ccnb1 and Sox2) and osteogenesis-related factors (Runx2, Sp7) in BMSCs. It is intriguing that this Wnt7b-Sox11 signaling in BMSCs is β-Catenin-independent. Overall, this study provides brand new insights of Wnt7b in bone formation, namely, Wnt7b can enhance both self-renewal and osteogenic differentiation of BMSCs via inducing Sox11. These findings present a new crosstalk between Wnt and Sox signaling in BMSCs.
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Affiliation(s)
- Fanyuan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Fanzi Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Feifei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Xueyang Liao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Yitian Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Xin Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yu Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Ling Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
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28
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Abstract
PURPOSE OF REVIEW Steroid-induced osteoporosis or glucocorticoid-induced osteoporosis (GIOP) is a common form of secondary osteoporosis and is a cause of increased morbidity and mortality. The pathogenesis of GIOP includes decreased bone formation and increased bone resorption. Clinicians can rely on several effective medications for the treatment and prevention of GIOP, including antiresorptive drugs (i.e. bisphosphonates) and bone anabolic drugs (i.e. teriparatide). RECENT FINDINGS Recent studies have further highlighted that GIOP is a major public health concern and have provided new insights on the pathogenesis of GIOP, in particular, the dose-dependent effects of glucocorticoids on bone. New evidence on the real-world effectiveness of established GIOP therapies have been recently published as well as the results of the 24-months denosumab randomized controlled trial in GIOP. SUMMARY GIOP and fragility fractures are important adverse events related to the long-term use of glucocorticoids. Recent studies have provided additional data on the epidemiology and pathogenesis of GIOP and on the efficacy and effectiveness of GIOP therapies.
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29
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Guo X, Jiang H, Zong X, Du L, Zhao J, Zhang D, Song G, Jin X. The implication of the notch signaling pathway in biphasic calcium phosphate ceramic‐induced ectopic bone formation: A preliminary experiment. J Biomed Mater Res A 2020; 108:1035-1044. [DOI: 10.1002/jbm.a.36878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 12/31/2019] [Accepted: 01/02/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Xiaoshuang Guo
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Haiyue Jiang
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Xianlei Zong
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Le Du
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Jingyi Zhao
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Dong Zhang
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Guodong Song
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
| | - Xiaolei Jin
- 16th Department, Plastic Surgery HospitalPeking Union Medical College, Chinese Academy of Medical Sciences Beijing China
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30
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Pakvasa M, Haravu P, Boachie-Mensah M, Jones A, Coalson E, Liao J, Zeng Z, Wu D, Qin K, Wu X, Luo H, Zhang J, Zhang M, He F, Mao Y, Zhang Y, Niu C, Wu M, Zhao X, Wang H, Huang L, Shi D, Liu Q, Ni N, Fu K, Lee MJ, Wolf JM, Athiviraham A, Ho SS, He TC, Hynes K, Strelzow J, El Dafrawy M, Reid RR. Notch signaling: Its essential roles in bone and craniofacial development. Genes Dis 2020; 8:8-24. [PMID: 33569510 PMCID: PMC7859553 DOI: 10.1016/j.gendis.2020.04.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/25/2020] [Accepted: 04/03/2020] [Indexed: 02/08/2023] Open
Abstract
Notch is a cell–cell signaling pathway that is involved in a host of activities including development, oncogenesis, skeletal homeostasis, and much more. More specifically, recent research has demonstrated the importance of Notch signaling in osteogenic differentiation, bone healing, and in the development of the skeleton. The craniofacial skeleton is complex and understanding its development has remained an important focus in biology. In this review we briefly summarize what recent research has revealed about Notch signaling and the current understanding of how the skeleton, skull, and face develop. We then discuss the crucial role that Notch plays in both craniofacial development and the skeletal system, and what importance it may play in the future.
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Affiliation(s)
- Mikhail Pakvasa
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA.,Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Pranav Haravu
- Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Michael Boachie-Mensah
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Alonzo Jones
- Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Elam Coalson
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Junyi Liao
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery, Gastrointestinal Surgery, Obstetrics and Gynecology, and Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Zongyue Zeng
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Ministry of Education Key Laboratory of Diagnostic Medicine, and School of Laboratory and Diagnostic Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Di Wu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Kevin Qin
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Xiaoxing Wu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery, Gastrointestinal Surgery, Obstetrics and Gynecology, and Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Huaxiu Luo
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Jing Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery, Gastrointestinal Surgery, Obstetrics and Gynecology, and Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Meng Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Orthopaedic Surgery, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, PR China
| | - Fang He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery, Gastrointestinal Surgery, Obstetrics and Gynecology, and Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Yukun Mao
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery and Neurosurgery, The Affiliated Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Yongtao Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266061, PR China
| | - Changchun Niu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Laboratory Diagnostic Medicine, Chongqing General Hospital, Chongqing, 400021, PR China
| | - Meng Wu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Institute of Bone and Joint Research, and the Department of Orthopaedic Surgery, The Second Hospitals of Lanzhou University, Gansu, Lanzhou, 730030, PR China
| | - Xia Zhao
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266061, PR China
| | - Hao Wang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Ministry of Education Key Laboratory of Diagnostic Medicine, and School of Laboratory and Diagnostic Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Linjuan Huang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery, Gastrointestinal Surgery, Obstetrics and Gynecology, and Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Deyao Shi
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430072, PR China
| | - Qing Liu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Department of Spine Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, PR China
| | - Na Ni
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Ministry of Education Key Laboratory of Diagnostic Medicine, and School of Laboratory and Diagnostic Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Kai Fu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Departments of Orthopaedic Surgery and Neurosurgery, The Affiliated Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430072, PR China
| | - Michael J Lee
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Jennifer Moriatis Wolf
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Aravind Athiviraham
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Sherwin S Ho
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Kelly Hynes
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Jason Strelzow
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Mostafa El Dafrawy
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA
| | - Russell R Reid
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL 60637, USA.,Section of Plastic and Reconstructive Surgery, Department of Surgery, The University of Chicago Medical Center, Chicago, IL 60637, USA
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Notch Signaling in Skeletal Development, Homeostasis and Pathogenesis. Biomolecules 2020; 10:biom10020332. [PMID: 32092942 PMCID: PMC7072615 DOI: 10.3390/biom10020332] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/10/2020] [Accepted: 02/13/2020] [Indexed: 02/07/2023] Open
Abstract
Skeletal development is a complex process which requires the tight regulation of gene activation and suppression in response to local signaling pathways. Among these pathways, Notch signaling is implicated in governing cell fate determination, proliferation, differentiation and apoptosis of skeletal cells-osteoblasts, osteoclasts, osteocytes and chondrocytes. Moreover, human genetic mutations in Notch components emphasize the critical roles of Notch signaling in skeletal development and homeostasis. In this review, we focus on the physiological roles of Notch signaling in skeletogenesis, postnatal bone and cartilage homeostasis and fracture repair. We also discuss the pathological gain- and loss-of-function of Notch signaling in bone and cartilage, resulting in osteosarcoma and age-related degenerative diseases, such as osteoporosis and osteoarthritis. Understanding the physiological and pathological function of Notch signaling in skeletal tissues using animal models and human genetics will provide new insights into disease pathogenesis and offer novel approaches for the treatment of bone/cartilage diseases.
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32
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Ying J, Xu T, Wang C, Jin H, Tong P, Guan J, Abu-Amer Y, O’Keefe R, Shen J. Dnmt3b ablation impairs fracture repair through upregulation of Notch pathway. JCI Insight 2020; 5:131816. [PMID: 32051335 PMCID: PMC7098799 DOI: 10.1172/jci.insight.131816] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022] Open
Abstract
We previously established that DNA methyltransferase 3b (Dnmt3b) is the sole Dnmt responsive to fracture repair and that Dnmt3b expression is induced in progenitor cells during fracture repair. In the current study, we confirmed that Dnmt3b ablation in mesenchymal progenitor cells (MPCs) resulted in impaired endochondral ossification, delayed fracture repair, and reduced mechanical strength of the newly formed bone in Prx1-Cre;Dnmt3bf/f (Dnmt3bPrx1) mice. Mechanistically, deletion of Dnmt3b in MPCs led to reduced chondrogenic and osteogenic differentiation in vitro. We further identified Rbpjκ as a downstream target of Dnmt3b in MPCs. In fact, we located 2 Dnmt3b binding sites in the murine proximal Rbpjκ promoter and gene body and confirmed Dnmt3b interaction with the 2 binding sites by ChIP assays. Luciferase assays showed functional utilization of the Dnmt3b binding sites in murine C3H10T1/2 cells. Importantly, we showed that the MPC differentiation defect observed in Dnmt3b deficiency cells was due to the upregulation of Rbpjκ, evident by restored MPC differentiation upon Rbpjκ inhibition. Consistent with in vitro findings, Rbpjκ blockage via dual antiplatelet therapy reversed the differentiation defect and accelerated fracture repair in Dnmt3bPrx1 mice. Collectively, our data suggest that Dnmt3b suppresses Notch signaling during MPC differentiation and is necessary for normal fracture repair.
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Affiliation(s)
- Jun Ying
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
- Institute of Orthopaedics and Traumatology, First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Taotao Xu
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
- Institute of Orthopaedics and Traumatology, First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Cuicui Wang
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Hongting Jin
- Institute of Orthopaedics and Traumatology, First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Peijian Tong
- Institute of Orthopaedics and Traumatology, First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianjun Guan
- Department of Biomedical Engineering, School of Engineering, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Yousef Abu-Amer
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
- Shriners Hospital for Children, St. Louis, Missouri, USA
| | - Regis O’Keefe
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jie Shen
- Department of Orthopaedic Surgery, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, USA
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33
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Bartold M, Gronthos S, Haynes D, Ivanovski S. Mesenchymal stem cells and biologic factors leading to bone formation. J Clin Periodontol 2019; 46 Suppl 21:12-32. [PMID: 30624807 DOI: 10.1111/jcpe.13053] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 09/23/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Physiological bone formation and bone regeneration occurring during bone repair can be considered distinct but similar processes. Mesenchymal stem cells (MSC) and associated biologic factors are crucial to both bone formation and bone regeneration. AIM To perform a narrative review of the current literature regarding the role of MSC and biologic factors in bone formation with the aim of discussing the clinical relevance of in vitro and in vivo animal studies. METHODS The literature was searched for studies on MSC and biologic factors associated with the formation of bone in the mandible and maxilla. The search specifically targeted studies on key aspects of how stem cells and biologic factors are important in bone formation and how this might be relevant to bone regeneration. The results are summarized in a narrative review format. RESULTS Different types of MSC and many biologic factors are associated with bone formation in the maxilla and mandible. CONCLUSION Bone formation and regeneration involve very complex and highly regulated cellular and molecular processes. By studying these processes, new clinical opportunities will arise for therapeutic bone regenerative treatments.
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Affiliation(s)
- Mark Bartold
- School of Dentistry, University of Adelaide, Adelaide, SA, Australia
| | - Stan Gronthos
- Mesenchymal Stem Cell Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - David Haynes
- Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, SA, Australia
| | - Saso Ivanovski
- School of Dentistry, University of Queensland, Brisbane, Qld, Australia
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Mijailovic I, Nikolic N, Djinic A, Carkic J, Milinkovic I, Peric M, Jankovic S, Milasin J, Aleksic Z. The down‐regulation of Notch 1 signaling contributes to the severity of bone loss in aggressive periodontitis. J Periodontol 2019; 91:554-561. [DOI: 10.1002/jper.18-0755] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Iva Mijailovic
- Department of Periodontology and Oral MedicineSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Nadja Nikolic
- Department of Human GeneticsSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Ana Djinic
- Department of Periodontology and Oral MedicineSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Jelena Carkic
- Department of Human GeneticsSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Iva Milinkovic
- Department of Periodontology and Oral MedicineSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Mina Peric
- Faculty of BiologyUniversity of Belgrade Belgrade Serbia
| | - Sasha Jankovic
- Department of Periodontology and Oral MedicineSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Jelena Milasin
- Department of Human GeneticsSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
| | - Zoran Aleksic
- Department of Periodontology and Oral MedicineSchool of Dental MedicineUniversity of Belgrade Belgrade Serbia
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35
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Liang ST, Chen JR, Tsai JJ, Lai YH, Hsiao CD. Overexpression of Notch Signaling Induces Hyperosteogeny in Zebrafish. Int J Mol Sci 2019; 20:ijms20153613. [PMID: 31344827 PMCID: PMC6696610 DOI: 10.3390/ijms20153613] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 07/03/2019] [Accepted: 07/18/2019] [Indexed: 12/13/2022] Open
Abstract
Notch signaling is one of the evolutionarily conserved signaling pathways in multicellular organisms. It plays an important role in embryonic development. During skeletal development of vertebrates, it regulates bone homeostasis by manipulating both osteoblastogenesis and osteoclastogenesis through different mechanisms. However, due to the different nature of Notch signaling in mesenchymal stem cell and osteoblast, regulation of Notch signaling in bone-related diseases remains unsettled. Previous studies by cell culture and mouse models showed contradictory results regarding the role of Notch signaling in bone homeostasis. To clarify the role of Notch signaling in osteogenesis, we established a zebrafish model, in which Notch1a intracellular domain (N1aICD) was specifically expressed in the osteoblasts. We found that overexpression of N1aICD in osteoblasts caused hyperosteogeny in the column region of zebrafish with the morphology of narrowed neural/hemal canals. Moreover, increased metabolic activity of osteoblasts instead of augmenting osteoblast number led to hyperosteogeny in N1aICD-overexpressed zebrafish. In summary, we successfully established a transgenic zebrafish line overexpressing N1aICD to clarify the in-vivo function of Notch signaling during osteoblastogenesis. In the future, this fish line can serve as a valuable tool to test the therapeutic drugs for hyperosteogeny.
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Affiliation(s)
- Sung-Tzu Liang
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan
| | - Jung-Ren Chen
- Department of Biological Science & Technology College of Medicine, I-Shou University, Kaohsiung 84001, Taiwan
| | - Jhih-Jie Tsai
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan
| | - Yu-Heng Lai
- Department of Chemistry, Chinese Culture University, Taipei 11114, Taiwan.
| | - Chung-Der Hsiao
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan.
- Center for Biomedical Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan.
- Center for Nanotechnology, Chung Yuan Christian University, Chung-Li 32023, Taiwan.
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36
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Review of the Pathways Involved in the Osteogenic Differentiation of Adipose-Derived Stem Cells. J Craniofac Surg 2019; 30:703-708. [PMID: 30839467 DOI: 10.1097/scs.0000000000005447] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Grafts and prosthetic materials used for the repair of bone defects are often accompanied by comorbidity and rejection. Therefore, there is an immense need for novel approaches to combating the issues surrounding such defects. Because of their accessibility, substantial proportion, and osteogenic differentiation potential, adipose-derived stem cells (ASCs) make for an ideal source of bone tissue in regenerative medicine. However, efficient induction of ASCs toward an osteoblastic lineage in vivo is met with challenges, and many signaling pathways must come together to secure osteoblastogenesis. Among them are bone morphogenic protein, wingless-related integration site protein, Notch, Hedgehog, fibroblast growth factor, vascular endothelial growth factor, and extracellular regulated-signal kinase. The goal of this literature review is to conglomerate the present research on these pathways to formulate a better understanding of how ASCs are most effectively transformed into bone in the context of tissue engineering.
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37
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Lee SY, Long F. Notch signaling suppresses glucose metabolism in mesenchymal progenitors to restrict osteoblast differentiation. J Clin Invest 2018; 128:5573-5586. [PMID: 30284985 DOI: 10.1172/jci96221] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/02/2018] [Indexed: 01/02/2023] Open
Abstract
Notch signaling critically controls cell fate decisions in mammals, both during embryogenesis and in adults. In the skeleton, Notch suppresses osteoblast differentiation and sustains bone marrow mesenchymal progenitors during postnatal life. Stabilizing mutations of Notch2 cause Hajdu-Cheney syndrome, which is characterized by early-onset osteoporosis in humans, but the mechanism whereby Notch inhibits bone accretion is not fully understood. Here, we report that activation of Notch signaling by either Jagged1 or the Notch2 intracellular domain suppresses glucose metabolism and osteoblast differentiation in primary cultures of bone marrow mesenchymal progenitors. Importantly, deletion of Notch2 in the limb mesenchyme increases both glycolysis and bone formation in the long bones of postnatal mice, whereas pharmacological reduction of glycolysis abrogates excessive bone formation. Mechanistically, Notch reduces the expression of glycolytic and mitochondrial complex I genes, resulting in a decrease in mitochondrial respiration, superoxide production, and AMPK activity. Forced activation of AMPK restores glycolysis in the face of Notch signaling. Thus, suppression of glucose metabolism contributes to the mechanism, whereby Notch restricts osteoblastogenesis from bone marrow mesenchymal progenitors.
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Affiliation(s)
| | - Fanxin Long
- Department of Orthopaedic Surgery, and.,Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA
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38
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Zanotti S, Yu J, Adhikari S, Canalis E. Glucocorticoids inhibit notch target gene expression in osteoblasts. J Cell Biochem 2018; 119:6016-6023. [PMID: 29575203 DOI: 10.1002/jcb.26798] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/20/2018] [Indexed: 12/13/2022]
Abstract
Glucocorticoids in excess suppress osteoblast function and cause osteoporosis. We demonstrated that cortisol induces the expression of selected Notch receptors in osteoblasts, revealing a potential mechanism for the skeletal effects of glucocorticoids. However, it remains to be determined whether increased expression of Notch receptors results into enhanced signaling. Following activation of Notch, its intracellular domain (NICD) binds to the DNA-associated protein recombination signal binding protein for immunoglobulin kappa-J region (RBPJ) and induces the expression of target genes such as Hey1, Hey2, and HeyL. To determine whether glucocorticoids modulate Notch signaling in the skeleton, 1 month old wild-type mice were administered prednisolone or placebo and sacrificed after 72 h, and gene expression was analyzed in femoral bone. Prednisolone induced Tsc22d3, a glucocorticoid target gene, and suppressed Hey1 and HeyL expression, which is indicative of inhibited Notch receptor activity or direct Hey downregulation. To determine the mechanisms of Hey suppression, wild-type osteoblast-enriched cells were seeded on the Notch cognate ligand Delta-like (DLL)1 or transfected with constructs expressing the NOTCH1 NICD fragment and exposed to either cortisol or vehicle. Cortisol opposed the induction of mRNA and heterogeneous nuclear RNA for Hey1, Hey2, and HeyL by DLL1, but had no effect on mRNA stability, indicating that glucocorticoids inhibit Hey expression by transcriptional mechanisms. Transactivation studies and electrophoretic mobility shift assays revealed that cortisol did not oppose RBPJ-mediated transcription or RBPJ/DNA interactions, respectively. In conclusion, glucocorticoids suppress expression of Hey1, Hey2, and HeyL in osteoblasts by RBPJ-independent transcriptional mechanisms.
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Affiliation(s)
- Stefano Zanotti
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,Department of Medicine, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | - Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
| | | | - Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut.,Department of Medicine, UConn Health, Farmington, Connecticut.,UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut
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39
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Seike M, Omatsu Y, Watanabe H, Kondoh G, Nagasawa T. Stem cell niche-specific Ebf3 maintains the bone marrow cavity. Genes Dev 2018; 32:359-372. [PMID: 29563184 PMCID: PMC5900710 DOI: 10.1101/gad.311068.117] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/28/2018] [Indexed: 01/01/2023]
Abstract
Bone marrow is the tissue filling the space between bone surfaces. Hematopoietic stem cells (HSCs) are maintained by special microenvironments known as niches within bone marrow cavities. Mesenchymal cells, termed CXC chemokine ligand 12 (CXCL12)-abundant reticular (CAR) cells or leptin receptor-positive (LepR+) cells, are a major cellular component of HSC niches that gives rise to osteoblasts in bone marrow. However, it remains unclear how osteogenesis is prevented in most CAR/LepR+ cells to maintain HSC niches and marrow cavities. Here, using lineage tracing, we found that the transcription factor early B-cell factor 3 (Ebf3) is preferentially expressed in CAR/LepR+ cells and that Ebf3-expressing cells are self-renewing mesenchymal stem cells in adult marrow. When Ebf3 is deleted in CAR/LepR+ cells, HSC niche function is severely impaired, and bone marrow is osteosclerotic with increased bone in aged mice. In mice lacking Ebf1 and Ebf3, CAR/LepR+ cells exhibiting a normal morphology are abundantly present, but their niche function is markedly impaired with depleted HSCs in infant marrow. Subsequently, the mutants become progressively more osteosclerotic, leading to the complete occlusion of marrow cavities in early adulthood. CAR/LepR+ cells differentiate into bone-producing cells with reduced HSC niche factor expression in the absence of Ebf1/Ebf3 Thus, HSC cellular niches express Ebf3 that is required to create HSC niches, to inhibit their osteoblast differentiation, and to maintain spaces for HSCs.
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Affiliation(s)
- Masanari Seike
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences, Graduate School of Medicine, Immunology Frontier Research Center, World Premier International Research Center (WPI), Osaka University, Osaka 565-0871, Japan
| | - Yoshiki Omatsu
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences, Graduate School of Medicine, Immunology Frontier Research Center, World Premier International Research Center (WPI), Osaka University, Osaka 565-0871, Japan
| | - Hitomi Watanabe
- Laboratory of Integrative Biological Science and Animal Experiments for Regeneration, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Gen Kondoh
- Laboratory of Integrative Biological Science and Animal Experiments for Regeneration, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Takashi Nagasawa
- Laboratory of Stem Cell Biology and Developmental Immunology, Graduate School of Frontier Biosciences, Graduate School of Medicine, Immunology Frontier Research Center, World Premier International Research Center (WPI), Osaka University, Osaka 565-0871, Japan
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40
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Hey1 and Hey2 are differently expressed during mouse tooth development. Gene Expr Patterns 2018; 27:99-105. [DOI: 10.1016/j.gep.2017.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 11/20/2022]
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41
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Vollersen N, Hermans-Borgmeyer I, Cornils K, Fehse B, Rolvien T, Triviai I, Jeschke A, Oheim R, Amling M, Schinke T, Yorgan TA. High Bone Turnover in Mice Carrying a Pathogenic Notch2 Mutation Causing Hajdu-Cheney Syndrome. J Bone Miner Res 2018; 33:70-83. [PMID: 28856714 DOI: 10.1002/jbmr.3283] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/09/2017] [Accepted: 08/27/2017] [Indexed: 01/08/2023]
Abstract
Hajdu-Cheney syndrome (HCS) is a rare autosomal-dominant disorder primarily characterized by acro-osteolysis and early-onset osteoporosis. Genetically, HCS is caused by nonsense or deletion mutations within exon 34 of the NOTCH2 gene, resulting in premature translational termination and production of C-terminally truncated NOTCH2 proteins that are predicted to activate NOTCH2-dependent signaling. To understand the role of Notch2 in bone remodeling, we developed a mouse model of HCS by introducing a pathogenic mutation (6272delT) into the murine Notch2 gene. By μCT and undecalcified histology, we observed generalized osteopenia in two independent mouse lines derived by injection of different targeted embryonic stem (ES) cell clones, yet acro-osteolysis did not occur until the age of 52 weeks. Cellular and dynamic histomorphometry revealed a high bone turnover situation in Notch2+/HCS mice, since osteoblast and osteoclast indices were significantly increased compared with wild-type littermates. Whereas ex vivo cultures failed to uncover cell-autonomous gain-of-functions within the osteoclast or osteoblast lineage, an unbiased RNA sequencing approach identified Tnfsf11 and Il6 as Notch-signaling target genes in bone marrow cells cultured under osteogenic conditions. Because we further observed that the high-turnover pathology of Notch2+/HCS mice was fully normalized by alendronate treatment, our results demonstrate that mutational activation of Notch2 does not directly control osteoblast activity but favors a pro-osteoclastic gene expression pattern, which in turn triggers high bone turnover. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Nele Vollersen
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Irm Hermans-Borgmeyer
- Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kerstin Cornils
- Research Department Cell and Gene Therapy, Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Boris Fehse
- Research Department Cell and Gene Therapy, Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Rolvien
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ioanna Triviai
- Clinic for Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Oheim
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timur Alexander Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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42
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Shao Y, Hernandez-Buquer S, Childress P, Stayrook KR, Alvarez MB, Davis H, Plotkin LI, He Y, Condon KW, Burr DB, Warden SJ, Robling AG, Yang FC, Wek RC, Allen MR, Bidwell JP. Improving Combination Osteoporosis Therapy in a Preclinical Model of Heightened Osteoanabolism. Endocrinology 2017; 158:2722-2740. [PMID: 28637206 PMCID: PMC5659666 DOI: 10.1210/en.2017-00355] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/15/2017] [Indexed: 11/19/2022]
Abstract
Combining anticatabolic agents with parathyroid hormone (PTH) to enhance bone mass has yielded mixed results in osteoporosis patients. Toward the goal of enhancing the efficacy of these regimens, we tested their utility in combination with loss of the transcription factor Nmp4 because disabling this gene amplifies PTH-induced increases in trabecular bone in mice by boosting osteoblast secretory activity. We addressed whether combining a sustained anabolic response with an anticatabolic results in superior bone acquisition compared with PTH monotherapy. Additionally, we inquired whether Nmp4 interferes with anticatabolic efficacy. Wild-type and Nmp4-/- mice were ovariectomized at 12 weeks of age, followed by therapy regimens, administered from 16 to 24 weeks, and included individually or combined PTH, alendronate (ALN), zoledronate (ZOL), and raloxifene (RAL). Anabolic therapeutic efficacy generally corresponded with PTH + RAL = PTH + ZOL > PTH + ALN = PTH > vehicle control. Loss of Nmp4 enhanced femoral trabecular bone increases under PTH + RAL and PTH + ZOL. RAL and ZOL promoted bone restoration, but unexpectedly, loss of Nmp4 boosted RAL-induced increases in femoral trabecular bone. The combination of PTH, RAL, and loss of Nmp4 significantly increased bone marrow osteoprogenitor number, but did not affect adipogenesis or osteoclastogenesis. RAL, but not ZOL, increased osteoprogenitors in both genotypes. Nmp4 status did not influence bone serum marker responses to treatments, but Nmp4-/- mice as a group showed elevated levels of the bone formation marker osteocalcin. We conclude that the heightened osteoanabolism of the Nmp4-/- skeleton enhances the effectiveness of diverse osteoporosis treatments, in part by increasing hyperanabolic osteoprogenitors. Nmp4 provides a promising target pathway for identifying barriers to pharmacologically induced bone formation.
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Affiliation(s)
- Yu Shao
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Selene Hernandez-Buquer
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Paul Childress
- Department of Orthopedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Keith R. Stayrook
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Marta B. Alvarez
- Department of Orthopedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Hannah Davis
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Lilian I. Plotkin
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Yongzheng He
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Keith W. Condon
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - David B. Burr
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Stuart J. Warden
- Center for Translational Musculoskeletal Research, School of Health and Rehabilitation Sciences, Indiana University, Indianapolis, Indiana 46202
- Department of Physical Therapy, School of Health and Rehabilitation Sciences, Indiana University, Indianapolis, Indiana 46202
| | - Alexander G. Robling
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Feng-Chun Yang
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, Florida 33136
| | - Ronald C. Wek
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Matthew R. Allen
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Richard A. Roudebush Veterans Administration Medical Center, Indianapolis, Indiana 46202
| | - Joseph P. Bidwell
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana 46202
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
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Majidinia M, Sadeghpour A, Yousefi B. The roles of signaling pathways in bone repair and regeneration. J Cell Physiol 2017; 233:2937-2948. [DOI: 10.1002/jcp.26042] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Maryam Majidinia
- Solid Tumor Research Center; Urmia University of Medical Sciences; Urmia Iran
| | - Alireza Sadeghpour
- Department of Orthopedic Surgery, School of Medicine and Shohada Educational Hospital; Tabriz University of Medical Sciences; Tabriz Iran
- Drug Applied Research Center; Tabriz University of Medical Sciences; Tabriz Iran
| | - Bahman Yousefi
- Immunology Research Center; Tabriz University of Medical Sciences; Tabriz Iran
- Molecular Targeting Therapy Research Group; Faculty of Medicine; Tabriz University of Medical Sciences; Tabriz Iran
- Stem cell and Regenerative Medicine Institute; Tabriz University of Medical Sciences; Tabriz Iran
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44
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Notch1 maintains dormancy of olfactory horizontal basal cells, a reserve neural stem cell. Proc Natl Acad Sci U S A 2017. [PMID: 28637720 DOI: 10.1073/pnas.1701333114] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The remarkable capacity of the adult olfactory epithelium (OE) to regenerate fully both neurosensory and nonneuronal cell types after severe epithelial injury depends on life-long persistence of two stem cell populations: the horizontal basal cells (HBCs), which are quiescent and held in reserve, and mitotically active globose basal cells. It has recently been demonstrated that down-regulation of the ΔN form of the transcription factor p63 is both necessary and sufficient to release HBCs from dormancy. However, the mechanisms by which p63 is down-regulated after acute OE injury remain unknown. To identify the cellular source of potential signaling mechanisms, we assessed HBC activation after neuron-only and sustentacular cell death. We found that ablation of sustentacular cells is sufficient for HBC activation to multipotency. By expression analysis, next-generation sequencing, and immunohistochemical examination, down-regulation of Notch pathway signaling is coincident with HBC activation. Therefore, using HBC-specific conditional knockout of Notch receptors and overexpression of N1ICD, we show that Notch signaling maintains p63 levels and HBC dormancy, in contrast to its suppression of p63 expression in other tissues. Additionally, Notch1, but not Notch2, is required to maintain HBC dormancy after selective neuronal degeneration. Taken together, our data indicate that the activation of HBCs observed after tissue injury or sustentacular cell ablation is caused by the reduction/elimination of Notch signaling on HBCs; elimination of Jagged1 expressed by sustentacular cells may be the ligand responsible.
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45
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Ji Y, Ke Y, Gao S. Intermittent activation of notch signaling promotes bone formation. Am J Transl Res 2017; 9:2933-2944. [PMID: 28670381 PMCID: PMC5489893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
Stimulatory and inhibitory effects of Notch signaling pathway on osteogenesis were both widely reported, questioning the effectiveness of small molecules targeting the Notch pathway for prevention or treatment of bone loss diseases. Here we showed that Notch signaling is activated in osteocytes embedded within the mineralized matrix and in late stages of bone marrow mesenchymal cell osteogenic cultures. Inhibition of Notch signaling markedly reduced mineralization activities of bone marrow mesenchymal cells and inhibited expressions of mineralization-associated genes when Notch ligand Jagged1 was conditionally deleted, confirming the essential roles of Notch signaling in mineralization stages of osteoblast differentiation. Moreover, intermittent activation of Notch signaling showed significant increases of bone formation in mice, rats and ovariectomized rats. A two-phase action model of Notch signaling in osteogenesis is proposed, where activation of Notch signaling in early stages of osteoblast differentiation results in proliferation of immature preosteoblast lineage cells and activation in late stages promotes differentiation of osteoblasts into osteocytes. Moreover, valproic acid is a strong activator of Notch signaling, and yearly administration of valproic acid daily showed little side effects, indicating that long term and intermittent activation of Notch signaling will be a safe and ideal way to promote anabolic bone formation for treatment of osteoporosis. Therefore, Notch signaling pathway is a good therapeutic target for bone loss diseases, and valproic acid, resveratrol and other Notch activators are promising therapeutic molecules for promoting anabolic bone formation when administered intermittently.
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Affiliation(s)
- Yaoting Ji
- Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, Hubei, China
| | - Yongxin Ke
- Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, Hubei, China
| | - Song Gao
- Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, Hubei, China
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46
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Zanotti S, Yu J, Sanjay A, Schilling L, Schoenherr C, Economides AN, Canalis E. Sustained Notch2 signaling in osteoblasts, but not in osteoclasts, is linked to osteopenia in a mouse model of Hajdu-Cheney syndrome. J Biol Chem 2017; 292:12232-12244. [PMID: 28592489 DOI: 10.1074/jbc.m117.786129] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/05/2017] [Indexed: 12/19/2022] Open
Abstract
Individuals with Hajdu-Cheney syndrome (HCS) present with osteoporosis, and HCS is associated with NOTCH2 mutations causing deletions of the proline-, glutamic acid-, serine-, and threonine-rich (PEST) domain that are predicted to enhance NOTCH2 stability and cause gain-of-function. Previously, we demonstrated that mice harboring Notch2 mutations analogous to those in HCS (Notch2HCS) are severely osteopenic because of enhanced bone resorption. We attributed this phenotype to osteoclastic sensitization to the receptor activator of nuclear factor-κB ligand and increased osteoblastic tumor necrosis factor superfamily member 11 (Tnfsf11) expression. Here, to determine the individual contributions of osteoclasts and osteoblasts to HCS osteopenia, we created a conditional-by-inversion (Notch2COIN ) model in which Cre recombination generates a Notch2ΔPEST allele expressing a Notch2 mutant lacking the PEST domain. Germ line Notch2COIN inversion phenocopied the Notch2HCS mutant, validating the model. To activate Notch2 in osteoclasts or osteoblasts, Notch2COIN mice were bred with mice expressing Cre from the Lyz2 or the BGLAP promoter, respectively. These crosses created experimental mice harboring a Notch2ΔPEST allele in Cre-expressing cells and control littermates expressing a wild-type Notch2 transcript. Notch2COIN inversion in Lyz2-expressing cells had no skeletal consequences and did not affect the capacity of bone marrow macrophages to form osteoclasts in vitro In contrast, Notch2COIN inversion in osteoblasts led to generalized osteopenia associated with enhanced bone resorption in the cancellous bone compartment and with suppressed endocortical mineral apposition rate. Accordingly, Notch2 activation in osteoblast-enriched cultures from Notch2COIN mice induced Tnfsf11 expression. In conclusion, introduction of the HCS mutation in osteoblasts, but not in osteoclasts, causes osteopenia.
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Affiliation(s)
- Stefano Zanotti
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut 06030; Department of Medicine, UConn Health, Farmington, Connecticut 06030; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut 06030
| | - Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut 06030; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut 06030
| | - Archana Sanjay
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut 06030; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut 06030
| | - Lauren Schilling
- UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut 06030
| | | | | | - Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut 06030; Department of Medicine, UConn Health, Farmington, Connecticut 06030; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut 06030.
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Abstract
PURPOSE OF REVIEW The mechanisms involved in the TNF-mediated deregulated bone remodeling are little appreciated. This review will discuss and summarize the impact of TNF, Notch, and RBP-J signaling on bone remodeling. RECENT FINDINGS The integrity of the adult skeleton undergoes constant and dynamic remodeling throughout life to maintain a proper bone homeostasis, which is achieved by the essential tight control of coupling between osteoclast-mediated bone resorption and osteoblast-mediated bone formation. The studies in this field include not only the differentiation and function of osteoblasts and osteoclasts, but also the mechanisms that simultaneously control both cell types during bone remodeling. Chronic inflammation is one of the most evident and common pathological settings that often leads to deregulated bone remodeling. The resounding success of TNF blockade therapy has demonstrated a key role for TNF in inflammation and the pathogenesis of inflammatory bone resorption associated with diseases such as rheumatoid arthritis and periodontitis. Recent studies have highlighted the function of Notch and RBP-J signaling in both physiological and TNF-mediated inflammatory bone remodeling.
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Affiliation(s)
- Baohong Zhao
- Arthritis and Tissue Degeneration Program and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.
- Graduate Program in Biochemistry, Cell and Molecular Biology, Weill Cornell Graduate School of Medical Sciences, New York, NY, USA.
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA.
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Lawal RA, Zhu X, Batey K, Hoffman CM, Georger MA, Radtke F, Hilton MJ, Xing L, Frisch BJ, Calvi LM. The Notch Ligand Jagged1 Regulates the Osteoblastic Lineage by Maintaining the Osteoprogenitor Pool. J Bone Miner Res 2017; 32:1320-1331. [PMID: 28277610 PMCID: PMC5466455 DOI: 10.1002/jbmr.3106] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 12/16/2022]
Abstract
Notch signaling is critical for osteoblastic differentiation; however, the specific contribution of individual Notch ligands is unknown. Parathyroid hormone (PTH) regulates the Notch ligand Jagged1 in osteoblastic cells. To determine if osteolineage Jagged1 contributes to bone homeostasis, selective deletion of Jagged1 in osteolineage cells was achieved through the presence of Prx1 promoter-driven Cre recombinase expression, targeting mesenchymal stem cells (MSCs) and their progeny (PJag1 mice). PJag1 mice were viable and fertile and did not exhibit any skeletal abnormalities at 2 weeks of age. At 2 months of age, however, PJag1 mice had increased trabecular bone mass compared to wild-type (WT) littermates. Dynamic histomorphometric analysis showed increased osteoblastic activity and increased mineral apposition rate. Immunohistochemical analysis showed increased numbers of osteocalcin-positive mature osteoblasts in PJag1 mice. Also increased phenotypically defined Lin- /CD45- /CD31- /Sca1- /CD51+ osteoblastic cells were measured by flow cytometric analysis. Surprisingly, phenotypically defined Lin- /CD45- /CD31- /Sca1+ /CD51+ MSCs were unchanged in PJag1 mice as measured by flow cytometric analysis. However, functional osteoprogenitor (OP) cell frequency, measured by Von Kossa+ colony formation, was decreased, suggesting that osteolineage Jagged1 contributes to maintenance of the OP pool. The trabecular bone increases were not due to osteoclastic defects, because PJag1 mice had increased bone resorption. Because PTH increases osteoblastic Jagged1, we sought to understand if osteolineage Jagged1 modulates PTH-mediated bone anabolism. Intermittent PTH treatment resulted in a significantly greater increase in BV/TV in PJag1 hind limbs compared to WT. These findings demonstrate a critical role of osteolineage Jagged1 in bone homeostasis, where Jagged1 maintains the transition of OP to maturing osteoblasts. This novel role of Jagged1 not only identifies a regulatory loop maintaining appropriate populations of osteolineage cells, but also provides a novel approach to increase trabecular bone mass, particularly in combination with PTH, through modulation of Jagged1. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Rialnat A Lawal
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Xichao Zhu
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Kaylind Batey
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Corey M Hoffman
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
- Department of Pharmacology and Physiology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Mary A Georger
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Freddy Radtke
- Ecole Polytechnique Fédérale de Lausanne, School of Life Sciences, Swiss Institute for Experimental Cancer Research, Lausanne, Vaud, Switzerland
| | - Matthew J Hilton
- Duke Orthopedic, Cellular, and Developmental and Genome Laboratories, Duke University School of Medicine, Durham, NC, USA
| | - Lianping Xing
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Benjamin J Frisch
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Laura M Calvi
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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Wang H, Jiang Z, Zhang J, Xie Z, Wang Y, Yang G. Enhanced osteogenic differentiation of rat bone marrow mesenchymal stem cells on titanium substrates by inhibiting Notch3. Arch Oral Biol 2017; 80:34-40. [PMID: 28366784 DOI: 10.1016/j.archoralbio.2017.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 03/04/2017] [Accepted: 03/15/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVE The role of the Notch pathway has already been identified as a crucial regulator of bone development. However, the Notch signaling pathway has gone largely unexplored during osseointegration. This study aims to investigate the role of Notch signaling on osteogenic differentiation of rat derived bone marrow mesenchymal stem cells (BMSCs) on sandblasted, large-grit, acid-etched (SLA) treated Ti disks. METHODS The involved target genes in Notch pathways were identified by in vitro microarray and bioinformatics analyses with or without osteogenic induction. Adhesion, proliferation, and osteogenic related assay were subsequently conducted with target gene shRNA treatment. RESULTS We found that 11 genes in the Notch signaling pathway were differentially expressed after osteogenic induction on SLA-treated Ti disks, which included up-regulated genes (Notch2, Dll1, Dll3, Ncstn, Ncor2, and Hes5) and down-regulated genes (Notch3, Lfng, Mfng, Jag2 and Maml2). With Notch3 shRNA treatment, the adhesion and proliferation of BMSCs on SLA-treated Ti disks were inhibited. Moreover, the expression levels of alkaline phosphatase (ALP), osteocalcin (OCN), calcium deposition, BMP2 and Runx2 increased significantly compared with that observed in control groups, suggesting that the function of Notch3 was inhibitory in the osteogenic differentiation of BMSCs on SLA-treated titanium. CONCLUSIONS Inhibition Notch3 can enhance osteogenic differentiation of BMSCs on SLA-treated Ti disks, which potentially provides a gene target for improving osseointegration.
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Affiliation(s)
- Huiming Wang
- Department of Oral and Maxillofacial Surgery, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China
| | - Zhiwei Jiang
- Department of Implantology, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China
| | - Jing Zhang
- Department of Implantology, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China
| | - Zhijian Xie
- Department of Oral and Maxillofacial Surgery, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China
| | - Ying Wang
- Department of Oral Medicine, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China
| | - Guoli Yang
- Department of Implantology, Stomatology Hospital, School of Medical, Zhejiang University, Yan'an Road, Hangzhou, PR China.
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50
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Canalis E, Zanotti S. Hairy and Enhancer of Split-Related With YRPW Motif-Like (HeyL) Is Dispensable for Bone Remodeling in Mice. J Cell Biochem 2017; 118:1819-1826. [PMID: 28019674 DOI: 10.1002/jcb.25859] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/22/2016] [Indexed: 12/14/2022]
Abstract
Notch induces Hairy Enhancer of Split (Hes)1 and Hes-related with YRPW motif (Hey) Hey1, Hey2 and Hey-like (HeyL) expression in osteoblasts, but it is not known whether any of these target genes mediates the effect of Notch in the skeleton. We demonstrated that Notch1 activation in osteoblasts/osteocytes induces Hes1, Hey1, Hey2, and HeyL, but HeyL was induced to a greater extent than other target genes. To characterize HeyL null mice for their skeletal phenotype, microcomputed tomography (µCT) and histomorphometric analysis of HeyL null and sex-matched littermate controls was performed. µCT demonstrated modest cancellous bone osteopenia in 1 month old male mice and normal microarchitecture in 3 month old male HeyL null mice. Female HeyL null mice were not different from controls at either 1 or 3 months of age. Bone histomorphometry did not demonstrate differences between HeyL null mice of either sex and littermate controls. In conclusion, HeyL null mice do not exhibit an obvious skeletal phenotype demonstrating that HeyL is dispensable for skeletal homeostasis. J. Cell. Biochem. 118: 1819-1826, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ernesto Canalis
- Departments of Orthopaedic Surgery and Medicine, and the UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, 06030-5456
| | - Stefano Zanotti
- Departments of Orthopaedic Surgery and Medicine, and the UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, 06030-5456
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