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Zhong F, Hao W, Chao H, Li Z, Chen S, Li S, Zhang S, Zhang K, Li Z, Liu H. Tenascin-C promotes endochondral ossification and fracture healing through Hedgehog and Hippo signaling. Biochem Biophys Res Commun 2024; 703:149634. [PMID: 38354465 DOI: 10.1016/j.bbrc.2024.149634] [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: 09/13/2023] [Revised: 12/24/2023] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
Fractures are frequent and severe musculoskeletal injuries. This study aimed to investigate the function of tenascin-C (TNC) in regulating chondrogenic during fracture healing and elucidate the underlying molecular mechanisms. A well-established femur fracture model in male C57BL/6J mice was used to transect the middle diaphysis of the femur. To identify the essential role of TNC, shTNC lentiviruses or TNC protein were administered in the animal model. Micro-CT analysis, histologic analysis, immunostaining assays, and gene expression analysis were employed to investigate the effect of TNC during fracture healing. An in vitro mesenchymal stem cell culture system was developed to investigate the role and molecular mechanism of TNC in regulating chondrogenesis. TNC expression was induced at the inflammatory phase and peaked at the cartilaginous callus phase during fracture healing. Knockdown of TNC expression in callus results in decreased callus formation and impaired fracture healing. Conversely, administration of exogenous TNC promoted chondrogenic differentiation, cartilage template formation and ultimately improved fracture healing. Both the Hedgehog and Hippo signaling pathways were found to be involved in the pro-chondrogenic function of TNC. Our observations demonstrate that TNC is a crucial factor responsible for endochondral ossification in fracture healing and provide a potential therapeutic strategy for promoting fracture healing.
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Affiliation(s)
- Fangling Zhong
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Wenjun Hao
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Hua Chao
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Zihao Li
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Siwen Chen
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Sifang Li
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Shuai Zhang
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China
| | - Kuibo Zhang
- Department of Spine Surgery, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, 519000, Guangdong, China.
| | - Zemin Li
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China.
| | - Hui Liu
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China; Guangdong Province Key Laboratory of Orthopaedics and Traumatology, Guangzhou, 510080, Guangdong, China.
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Kamalitdinov TB, Fujino K, Keith Lang S, Jiang X, Madi R, Evans MK, Zgonis MH, Kuntz AF, Dyment NA. Targeting the hedgehog signaling pathway to improve tendon-to-bone integration. Osteoarthritis Cartilage 2023; 31:1202-1213. [PMID: 37146960 PMCID: PMC10524548 DOI: 10.1016/j.joca.2023.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/24/2023] [Accepted: 04/29/2023] [Indexed: 05/07/2023]
Abstract
OBJECTIVE While the role of hedgehog (Hh) signaling in promoting zonal fibrocartilage production during development is well-established, whether this pathway can be leveraged to improve tendon-to-bone repair in adults is unknown. Our objective was to genetically and pharmacologically stimulate the Hh pathway in cells that give rise to zonal fibrocartilaginous attachments to promote tendon-to-bone integration. DESIGN Hh signaling was stimulated genetically via constitutive Smo (SmoM2 construct) activation of bone marrow stromal cells or pharmacologically via systemic agonist delivery to mice following anterior cruciate ligament reconstruction (ACLR). To assess tunnel integration, we measured mineralized fibrocartilage (MFC) formation in these mice 28 days post-surgery and performed tunnel pullout testing. RESULTS Hh pathway-related genes increased in cells forming the zonal attachments in wild-type mice. Both genetic and pharmacologic stimulation of the Hh pathway increased MFC formation and integration strength 28 days post-surgery. We next conducted studies to define the role of Hh in specific stages of the tunnel integration process. We found Hh agonist treatment increased the proliferation of the progenitor pool in the first week post-surgery. Additionally, genetic stimulation led to continued MFC production in the later stages of the integration process. These results indicate that Hh signaling plays an important biphasic role in cell proliferation and differentiation towards fibrochondrocytes following ACLR. CONCLUSION This study reveals a biphasic role for Hh signaling during the tendon-to-bone integration process after ACLR. In addition, the Hh pathway is a promising therapeutic target to improve tendon-to-bone repair outcomes.
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Affiliation(s)
- Timur B Kamalitdinov
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA; Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Keitaro Fujino
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA; Osaka Medical and Pharmaceutical University, Takatsuki, Osaka Prefecture, Japan
| | - Sinaia Keith Lang
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA; Department of Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Xi Jiang
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Rashad Madi
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Mary Kate Evans
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA; Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Miltiadis H Zgonis
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Andrew F Kuntz
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Nathaniel A Dyment
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA; Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.
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Rundle CH, Gomez GA, Pourteymoor S, Mohan S. Sequential application of small molecule therapy enhances chondrogenesis and angiogenesis in murine segmental defect bone repair. J Orthop Res 2023; 41:1471-1481. [PMID: 36448182 PMCID: PMC10506518 DOI: 10.1002/jor.25493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 10/03/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
The increasing incidence of physiologic/pathologic conditions that impair the otherwise routine healing of endochondral bone fractures and the occurrence of severe bone injuries necessitate novel approaches to enhance clinically challenging bone fracture repair. To promote the healing of nonunion fractures, we tested an approach that used two small molecules to sequentially enhance cartilage development and conversion to the bone in the callus of a murine femoral segmental defect nonunion model of bone injury. Systemic injections of smoothened agonist 21k (SAG21k) were used to stimulate chondrogenesis through the activation of the sonic hedgehog (SHH) pathway early in bone repair, while injections of the prolyl hydroxylase domain (PHD)2 inhibitor, IOX2, were used to stimulate hypoxia signaling-mediated endochondral bone formation. The expression of SHH pathway genes and Phd2 target genes was increased in chondrocyte cell lines in response to SAG21k and IOX2 treatment, respectively. The segmental defect responded to sequential systemic administration of these small molecules with increased chondrocyte expression of PTCH1, GLI1, and SOX9 in response to SAG and increased expression of hypoxia-induced factor-1α and vascular endothelial growth factor-A in the defect tissues in response to IOX2. At 6 weeks postsurgery, the combined SAG-IOX2 therapy produced increased bone formation in the defect with the bony union over the injury. Clinical significance: This therapeutic approach was successful in promoting cartilage and bone formation within a critical-size segmental defect and established the utility of a sequential small molecule therapy for the enhancement of fracture callus development in clinically challenging bone injuries.
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Affiliation(s)
- Charles H. Rundle
- Musculoskeletal Disease Center, VA Loma Linda Healthcare System, Loma Linda, California, USA
- Department of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Gustavo A. Gomez
- Musculoskeletal Disease Center, VA Loma Linda Healthcare System, Loma Linda, California, USA
| | - Sheila Pourteymoor
- Musculoskeletal Disease Center, VA Loma Linda Healthcare System, Loma Linda, California, USA
| | - Subburaman Mohan
- Musculoskeletal Disease Center, VA Loma Linda Healthcare System, Loma Linda, California, USA
- Department of Medicine, Loma Linda University, Loma Linda, California, USA
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Marcucio R, Miclau T, Bahney C. A Shifting Paradigm: Transformation of Cartilage to Bone during Bone Repair. J Dent Res 2023; 102:13-20. [PMID: 36303415 PMCID: PMC9791286 DOI: 10.1177/00220345221125401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
While formation and regeneration of the skeleton have been studied for a long period of time, significant scientific advances in this field continue to emerge based on an unmet clinical need to improve options to promote bone repair. In this review, we discuss the relationship between mechanisms of bone formation and bone regeneration. Data clearly show that regeneration is not simply a reinduction of the molecular and cellular programs that were used for development. Instead, the mechanical environment exerts a strong influence on the mode of repair, while during development, cell-intrinsic processes drive the mode of skeletal formation. A major advance in the field has shown that cell fate is flexible, rather than terminal, and that chondrocytes are able to differentiate into osteoblasts and other cell types during development and regeneration. This is discussed in a larger context of regeneration in vertebrates as well as the clinical implication that this shift in understanding presents.
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Affiliation(s)
- R.S. Marcucio
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
| | - T. Miclau
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
| | - C.S. Bahney
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
- Steadman Philippon Research Institute, Vail, CO, USA
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Kitaura Y, Nakamura U, Awada C, Yamaguchi M, Kim M, Ikeda Y, Matsuo Y, Moriishi T, Sawase T, Chung UI, Hojo H, Ohba S. Orally administrable peptides derived from egg yolk promote skeletal repair and ameliorate degenerative skeletal disorders in mouse models. Regen Ther 2022; 21:584-595. [DOI: 10.1016/j.reth.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/27/2022] [Accepted: 11/08/2022] [Indexed: 11/27/2022] Open
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Kikuchi K, Haneda M, Hayashi S, Maeda T, Nakano N, Kuroda Y, Tsubosaka M, Kamenaga T, Fujita M, Ikuta K, Anjiki K, Tachibana S, Onoi Y, Matsumoto T, Kuroda R. P21 deficiency exhibits delayed endochondral ossification during fracture healing. Bone 2022; 165:116572. [PMID: 36180020 DOI: 10.1016/j.bone.2022.116572] [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: 05/21/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Endochondral ossification is a complex biological phenomenon involving a variety of factors and cells. Cyclin-dependent kinase inhibitor 1 (p21) inhibits cell cycle progression and is affected by external stress. We recently reported that embryonic endochondral ossification is unaffected by endogenous p21 deficiency. In this study, we evaluated whether p21 expression affects endochondral ossification during fracture healing. METHODS Tibial fractures were introduced into p21 knockout (p21-/-) (n = 24) and wild-type C57BL/6 (p21+/+) (n = 24) mice at age 10 weeks. Fracture healing was evaluated using radiological, histological, and immunohistochemical (IHC) analyses. The effect of p21 small interfering RNA (siRNA) on ATDC5 cells was assessed in vitro. RESULTS The Allen score for fracture healing was lower in p21-/- mice than in p21+/+ mice. In addition, p21-/- mice exhibited larger calluses and lower bone mineral density. IHC analyses showed that p21-/- mice exhibited delayed endochondral ossification via the Ihh-Runx2-Osterix pathway in vivo. Down-regulation of p21 expression in ATDC5 cells delayed endochondral ossification in vitro. CONCLUSIONS p21 deficiency leads to delayed endochondral ossification by attenuating the Ihh-Runx2-Osterix pathway in vivo, and p21 deficiency in hypertrophic chondrocytes causes delayed differentiation of hypertrophic chondrocytes in vitro. p21 plays a role in endochondral ossification during fracture healing.
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Affiliation(s)
- Kenichi Kikuchi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masahiko Haneda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Toshihisa Maeda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Naoki Nakano
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuichi Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masanori Tsubosaka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoyuki Kamenaga
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masahiro Fujita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kenmei Ikuta
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Kensuke Anjiki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shotaro Tachibana
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuma Onoi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Ahmadi A, Mazloomnejad R, Kasravi M, Gholamine B, Bahrami S, Sarzaeem MM, Niknejad H. Recent advances on small molecules in osteogenic differentiation of stem cells and the underlying signaling pathways. Stem Cell Res Ther 2022; 13:518. [PMID: 36371202 PMCID: PMC9652959 DOI: 10.1186/s13287-022-03204-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/09/2022] [Indexed: 11/15/2022] Open
Abstract
Bone-related diseases are major contributors to morbidity and mortality in elderly people and the current treatments result in insufficient healing and several complications. One of the promising areas of research for healing bone fractures and skeletal defects is regenerative medicine using stem cells. Differentiating stem cells using agents that shift cell development towards the preferred lineage requires activation of certain intracellular signaling pathways, many of which are known to induce osteogenesis during embryological stages. Imitating embryological bone formation through activation of these signaling pathways has been the focus of many osteogenic studies. Activation of osteogenic signaling can be done by using small molecules. Several of these agents, e.g., statins, metformin, adenosine, and dexamethasone have other clinical uses but have also shown osteogenic capacities. On the other hand, some other molecules such as T63 and tetrahydroquinolines are not as well recognized in the clinic. Osteogenic small molecules exert their effects through the activation of signaling pathways known to be related to osteogenesis. These pathways include more well-known pathways including BMP/Smad, Wnt, and Hedgehog as well as ancillary pathways including estrogen signaling and neuropeptide signaling. In this paper, we review the recent data on small molecule-mediated osteogenic differentiation, possible adjunctive agents with these molecules, and the signaling pathways through which each small molecule exerts its effects.
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Affiliation(s)
- Armin Ahmadi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Radman Mazloomnejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Mohammadreza Kasravi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Babak Gholamine
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in AUVA Research Center, Vienna, Austria
| | - Mohammad Mahdi Sarzaeem
- Department of Orthopedic Surgery, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hassan Niknejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985711151, Tehran, Iran.
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Ma C, Liu H, Wei Y, Li H, Miao D, Ren Y. Exogenous PTH 1-34 Attenuates Impaired Fracture Healing in Endogenous PTH Deficiency Mice via Activating Indian Hedgehog Signaling Pathway and Accelerating Endochondral Ossification. Front Cell Dev Biol 2022; 9:750878. [PMID: 35071224 PMCID: PMC8766796 DOI: 10.3389/fcell.2021.750878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
Fracture healing is a complicated, long-term, and multistage repair process. Intermittent administration of parathyroid hormone (PTH) has been proven effective on intramembranous and endochondral bone formation during the fracture healing process, however, the mechanism is unclear. In this study, we investigated the role of exogenous PTH and endogenous PTH deficiency in bone fracture healing and explored the mechanism by using PTH knockout (PTH-/-) mice and ATDC5 cells. In a mouse femur fracture model, endogenous PTH deficiency could delay endochondral ossification whereas exogenous PTH promotes accumulation of endochondral bone, accelerates cartilaginous callus conversion to bony callus, enhances maturity of bony callus, and attenuates impaired fracture healing resulting from endogenous PTH deficiency. In fracture callus tissue, endogenous PTH deficiency could inhibit chondrocyte proliferation and differentiation whereas exogenous PTH could activate the IHH signaling pathway to accelerate endochondral ossification and rescue impaired fracture healing resulting from endogenous PTH deficiency. In vitro, exogenous PTH promotes cell proliferation by activating IHH signaling pathway on ATDC5 cells. In mechanistic studies, by using ChIP and luciferase reporter assays, we showed that PTH could phosphorylate CREB, and subsequently bind to the promoter of IHH, causing the activation of IHH gene expression. Therefore, results from this study support the concept that exogenous PTH 1-34 attenuates impaired fracture healing in endogenous PTH deficiency mice via activating the IHH pathway and accelerating endochondral ossification. Hence, the investigation of the mechanism underlying the effects of PTH treatment on fracture repair might guide the exploration of effective therapeutic targets for fracture.
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Affiliation(s)
- Cheng Ma
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huan Liu
- Department of Orthopaedics, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, China
| | - Yifan Wei
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - He Li
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dengshun Miao
- Nanjing Medical University, Affiliated Friendship Plastic Surgery Hospital, Nanjing, China
| | - Yongxin Ren
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Li X, Yang S, Chinipardaz Z, Koyama E, Yang S. SAG therapy restores bone growth and reduces enchondroma incidence in a model of skeletal chondrodysplasias caused by Ihh deficiency. Mol Ther Methods Clin Dev 2021; 23:461-475. [PMID: 34820473 PMCID: PMC8591400 DOI: 10.1016/j.omtm.2021.09.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/22/2021] [Accepted: 09/24/2021] [Indexed: 12/18/2022]
Abstract
Inactivation mutations in the Indian hedgehog (Ihh) gene in humans cause numerous skeletal chondrodysplasias, including acrocapitofemoral dysplasia, brachydactyly type A1, and human short stature. The lack of an appropriate human-relevant model to accurately represent these chondrodysplasias has hampered the identification of clinically effective treatments. Here, we established a mouse model of human skeletal dysplasia induced by Ihh gene mutations via ablation of Ihh in Aggrecan-positive (Acan+) cells using Aggrecan (Acan)-creERT transgenic mice. Smoothen agonist (SAG) promoted Hh activity and rescued chondrocyte proliferation and differentiation by stimulating smoothened trafficking to the cilium in Ihh-silenced cells. SAG treatment corrected mouse stature and significantly decreased mortality without evidence of toxicity. Moreover, Ihh ablation in Acan+ cells produced enchondroma-like tissues near the growth plates that were significantly reduced by SAG treatment. These results demonstrated that SAG effectively treats skeletal dysplasia caused by Ihh gene mutations in a mouse model, suggesting that SAG may represent a potential drug for the treatment of these diseases and/or enchondromas.
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Affiliation(s)
- Xinhua Li
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China.,Department of Spinal Surgery, East Hospital, Tongji University, School of Medicine, Shanghai 200120, China
| | - Shuting Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Zahra Chinipardaz
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Eiki Koyama
- Division of Orthopedic Surgery, Department of Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Shuying Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, PA 19104, USA.,The Penn Center for Musculoskeletal Disorders, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Yamakawa D, Kawase-Koga Y, Fujii Y, Kanno Y, Sato M, Ohba S, Kitaura Y, Kashiwagi M, Chikazu D. Effects of Helioxanthin Derivative-Treated Human Dental Pulp Stem Cells on Fracture Healing. Int J Mol Sci 2020; 21:E9158. [PMID: 33271795 PMCID: PMC7730800 DOI: 10.3390/ijms21239158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/05/2023] Open
Abstract
Bone defects affect patients functionally and psychologically and can decrease quality of life. To resolve these problems, a simple and efficient method of bone regeneration is required. Human dental pulp stem cells (DPSCs) have high proliferative ability and multilineage differentiation potential. In our previous study, we reported a highly efficient method to induce osteogenic differentiation using DPSC sheets treated with a helioxanthin derivative (4-(4-methoxyphenyl)pyrido[40,30:4,5]thieno[2,3-b]pyridine-2-carboxamide (TH)) in a mouse calvarial defect model. However, the localization of the DPSCs after transplantation remains unknown. Therefore, in this study, we investigated the localization of transplanted DPSCs in a mouse fracture model. DPSCs were collected from six healthy patients aged 18-29 years, cultured in normal medium (NM), osteogenic medium (OM), or OM with TH, and fabricated them into cell sheets. To evaluate the efficacy of fracture healing using DPSCs treated with OM+TH, and to clarify the localization of the transplanted DPSC sheets in vivo, we transplanted OM+TH-treated DPSC sheets labeled with PKH26 into mouse tibiae fractures. We demonstrated that transplanted OM+TH-treated DPSCs sheets were localized to the fracture site and facilitated bone formation. These results indicated that transplanted OM+TH-treated DPSCs were localized at fracture sites and directly promoted fracture healing.
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Affiliation(s)
- Daiki Yamakawa
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
| | - Yoko Kawase-Koga
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
- Department of Oral and Maxillofacial Surgery, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 160-0023, Japan
| | - Yasuyuki Fujii
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
| | - Yuki Kanno
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
- Department of Oral and Maxillofacial Surgery, Tokyo Women’s Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 160-0023, Japan
| | - Marika Sato
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
| | - Shinsuke Ohba
- Department of Cell Biology, Institute of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan;
| | - Yoshiaki Kitaura
- Department of Bioengineering, School of Engneering, The University of Tokyo, 7-3-1 Hongou, Bunkyo-ku, Tokyo 113-0033, Japan;
| | - Miki Kashiwagi
- Department of Oral-Maxillofacial Surgery and Orthodontics, University of Tokyo Hospital, 7-3-1 Hongou, Bunkyo-ku, Tokyo 113-0033, Japan;
| | - Daichi Chikazu
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan; (D.Y.); (Y.F.); (Y.K.); (M.S.); (D.C.)
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11
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Regulation of Hedgehog signaling Offers A Novel Perspective for Bone Homeostasis Disorder Treatment. Int J Mol Sci 2019; 20:ijms20163981. [PMID: 31426273 PMCID: PMC6719140 DOI: 10.3390/ijms20163981] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/10/2019] [Accepted: 08/14/2019] [Indexed: 02/07/2023] Open
Abstract
The hedgehog (HH) signaling pathway is central to the regulation of bone development and homeostasis. HH signaling is not only involved in osteoblast differentiation from bone marrow mesenchymal stem cells (BM-MSCs), but also acts upstream within osteoblasts via the OPG/RANK/RANKL axis to control the expression of RANKL. HH signaling has been found to up-regulate parathyroid hormone related protein (PTHrP) expression in osteoblasts, which in turn activates its downstream targets nuclear factor of activated T cells (NFAT) and cAMP responsive element binding protein (CREB), and as a result CREB and NFAT cooperatively increase RANKL expression and osteoclastogenesis. Osteoblasts must remain in balance with osteoclasts in order to avoid excessive bone formation or resorption, thereby maintaining bone homeostasis. This review systemically summarizes the mechanisms whereby HH signaling induces osteoblast development and controls RANKL expression through PTHrP in osteoblasts. Proper targeting of HH signaling may offer a therapeutic option for treating bone homeostasis disorders.
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12
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McKenzie JA, Maschhoff C, Liu X, Migotsky N, Silva MJ, Gardner MJ. Activation of hedgehog signaling by systemic agonist improves fracture healing in aged mice. J Orthop Res 2019; 37:51-59. [PMID: 29663560 PMCID: PMC6226344 DOI: 10.1002/jor.24017] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/04/2018] [Indexed: 02/04/2023]
Abstract
Fracture healing is a complex process of many coordinated biological pathways. This system can go awry resulting in nonunion, which leads to significant patient morbidity. The Hedgehog (Hh) signaling pathway is upregulated in fracture healing. We hypothesized that the Hh signaling pathway can be pharmacologically modulated to positively affect fracture healing. Diaphyseal femur fractures were created in elderly mice (18 months, C57BL/6 females), which have a blunted and delayed healing response compared to younger mice, and were stabilized with intramedullary pins. To activate the Hh pathway we targeted the receptor Smoothened using an agonist (Hh-Ag1.5 [Hh-Ag]) and compared this to a vehicle control. Expression of Hh target genes were significantly increased in the fracture callus of the agonist group compared to controls, indicating pathway activation. Expression of osteogenic and chondrogenic-related genes was greatly upregulated in fracture callus versus intact femora, although Hh agonist treatment did not consistently enhance this response. Blindly graded, radiographic callus healing scores were significantly higher in the Hh-Ag groups at post operative day (POD) 14, indicating earlier callus bridging. On microCT, Hh-Ag treatment led to greater callus volume (+40%) and bone volume (+25%) at POD21. By day 14, callus vascularity, as assessed by 3D microCT angiography vessel volume, was 85% greater in the Hh-Ag group. Finally, mechanical strength of the calluses in the Hh-Ag groups was significantly greater than in the control groups at POD21. In conclusion, systemic administration of a Hh agonist appears to improve the osseous and vascular healing responses in a mouse fracture healing-impaired model. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
| | | | - Xiaochen Liu
- Washington University Orthopedics, St. Louis, MO
| | | | | | - Michael J. Gardner
- Washington University Orthopedics, St. Louis, MO,Stanford University Orthopedics, Stanford, CA
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13
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Wong SA, Rivera KO, Miclau T, Alsberg E, Marcucio RS, Bahney CS. Microenvironmental Regulation of Chondrocyte Plasticity in Endochondral Repair-A New Frontier for Developmental Engineering. Front Bioeng Biotechnol 2018; 6:58. [PMID: 29868574 PMCID: PMC5962790 DOI: 10.3389/fbioe.2018.00058] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/23/2018] [Indexed: 12/31/2022] Open
Abstract
The majority of fractures heal through the process of endochondral ossification, in which a cartilage intermediate forms between the fractured bone ends and is gradually replaced with bone. Recent studies have provided genetic evidence demonstrating that a significant portion of callus chondrocytes transform into osteoblasts that derive the new bone. This evidence has opened a new field of research aimed at identifying the regulatory mechanisms that govern chondrocyte transformation in the hope of developing improved fracture therapies. In this article, we review known and candidate molecular pathways that may stimulate chondrocyte-to-osteoblast transformation during endochondral fracture repair. We also examine additional extrinsic factors that may play a role in modulating chondrocyte and osteoblast fate during fracture healing such as angiogenesis and mineralization of the extracellular matrix. Taken together the mechanisms reviewed here demonstrate the promising potential of using developmental engineering to design therapeutic approaches that activate endogenous healing pathways to stimulate fracture repair.
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Affiliation(s)
- Sarah A Wong
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, San Francisco, CA, United States.,School of Dentistry, University of California, San Francisco, San Francisco, CA, United States
| | - Kevin O Rivera
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, San Francisco, CA, United States.,School of Dentistry, University of California, San Francisco, San Francisco, CA, United States
| | - Theodore Miclau
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Eben Alsberg
- Department of Orthopaedic Surgery and Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Ralph S Marcucio
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, San Francisco, CA, United States.,School of Dentistry, University of California, San Francisco, San Francisco, CA, United States
| | - Chelsea S Bahney
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, San Francisco, CA, United States
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14
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Matsumoto K, Shimo T, Kurio N, Okui T, Ibaragi S, Kunisada Y, Obata K, Masui M, Pai P, Horikiri Y, Yamanaka N, Takigawa M, Sasaki A. Low‐intensity pulsed ultrasound stimulation promotes osteoblast differentiation through hedgehog signaling. J Cell Biochem 2018; 119:4352-4360. [DOI: 10.1002/jcb.26418] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/03/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Kenichi Matsumoto
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Tsuyoshi Shimo
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
- Advanced Research Center for Oral and Craniofacial SciencesOkayama University Dental School/Graduate School of Medicine and Pharmaceutical ScienceOkayamaJapan
| | - Naito Kurio
- Department of Oral Surgery, Subdivision of Molecular Oral MedicineDivision of Integrated Sciences of Translational ResearchInstitute of Health BiosciencesGraduate School of Tokushima UniversityTokushimaJapan
| | - Tatsuo Okui
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Soichiro Ibaragi
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Yuki Kunisada
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Kyoichi Obata
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Masanori Masui
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | - Pang Pai
- Department of Oromaxillofacial‐Head and Neck SurgeryDepartment of Oral and Maxillofacial SurgerySchool of StomatologyChina Medical UniversityShenyangP. R. China
| | - Yuu Horikiri
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
| | | | - Masaharu Takigawa
- Advanced Research Center for Oral and Craniofacial SciencesOkayama University Dental School/Graduate School of Medicine and Pharmaceutical ScienceOkayamaJapan
| | - Akira Sasaki
- Department of Oral and Maxillofacial SurgeryOkayama University Graduate School of Medicine, Dentistry, and Pharmaceutical SciencesOkayamaJapan
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15
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Um J, Lee JH, Jung DW, Williams DR. Re-education begins at home: an overview of the discovery of in vivo-active small molecule modulators of endogenous stem cells. Expert Opin Drug Discov 2018; 13:307-326. [PMID: 29421943 DOI: 10.1080/17460441.2018.1437140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Degenerative diseases, such as Alzheimer's disease, heart disease and arthritis cause great suffering and are major socioeconomic burdens. An attractive treatment approach is stem cell transplantation to regenerate damaged or destroyed tissues. However, this can be problematic. For example, donor cells may not functionally integrate into the host tissue. An alternative methodology is to deliver bioactive agents, such as small molecules, directly into the diseased tissue to enhance the regenerative potential of endogenous stem cells. Areas covered: In this review, the authors discuss the necessity of developing these small molecules to treat degenerative diseases and survey progress in their application as therapeutics. They describe both the successes and caveats of developing small molecules that target endogenous stem cells to induce tissue regeneration. This article is based on literature searches which encompass databases for biomedical research and clinical trials. These small molecules are also categorized per their target disease and mechanism of action. Expert opinion: The development of small molecules targeting endogenous stem cells is a high-profile research area. Some compounds have made the successful transition to the clinic. Novel approaches, such as modulating the stem cell niche or targeted delivery to disease sites, should increase the likelihood of future successes in this field.
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Affiliation(s)
- JungIn Um
- a New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology , Buk-Gu , Gwangju , Republic of Korea
| | - Ji-Hyung Lee
- a New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology , Buk-Gu , Gwangju , Republic of Korea
| | - Da-Woon Jung
- a New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology , Buk-Gu , Gwangju , Republic of Korea
| | - Darren R Williams
- a New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology , Buk-Gu , Gwangju , Republic of Korea
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