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Yang Y, Dai Q, Gao X, Zhu Y, Chung MR, Jin A, Liu Y, Wang X, Huang X, Sun S, Xu H, Liu J, Jiang L. Occlusal force orchestrates alveolar bone homeostasis via Piezo1 in female mice. J Bone Miner Res 2024; 39:580-594. [PMID: 38477783 DOI: 10.1093/jbmr/zjae032] [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: 10/19/2023] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024]
Abstract
Healthy alveolar bone is the cornerstone of oral function and oral treatment. Alveolar bone is highly dynamic during the entire lifespan and is affected by both systemic and local factors. Importantly, alveolar bone is subjected to unique occlusal force in daily life, and mechanical force is a powerful trigger of bone remodeling, but the effect of occlusal force in maintaining alveolar bone mass remains ambiguous. In this study, the Piezo1 channel is identified as an occlusal force sensor. Activation of Piezo1 rescues alveolar bone loss caused by a loss of occlusal force. Moreover, we identify Piezo1 as the mediator of occlusal force in osteoblasts, maintaining alveolar bone homeostasis by directly promoting osteogenesis and by sequentially regulating catabolic metabolism through Fas ligand (FasL)-induced osteoclastic apoptosis. Interestingly, Piezo1 activation also exhibits remarkable efficacy in the treatment of alveolar bone osteoporosis caused by estrogen deficiency, which is highly prevalent among middle-aged and elderly women. Promisingly, Piezo1 may serve not only as a treatment target for occlusal force loss-induced alveolar bone loss but also as a potential target for metabolic bone loss, especially in older patients.
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Affiliation(s)
- Yiling Yang
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Qinggang Dai
- Shanghai Key Laboratory of Stomatology, The 2 nd Dental Center, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Xin Gao
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Yanfei Zhu
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Mi Ri Chung
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Anting Jin
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Yuanqi Liu
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Xijun Wang
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Xiangru Huang
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Siyuan Sun
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Hongyuan Xu
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Jingyi Liu
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
| | - Lingyong Jiang
- Shanghai Key Laboratory of Stomatology, Department of Oral and Cranio-Maxillofacial Science, Center of Craniofacial Orthodontics, National Clinical Research Center of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiaotong University School of Medicine, , Ninth People's Hospital, Shanghai, Shanghai 200011, China
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Wiatr M, Bartoszewicz R, Niemczyk K, Wiatr A. Effect of stapes demineralisation on the development of cochlear otosclerosis. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2024; 44:120-127. [PMID: 38420840 DOI: 10.14639/0392-100x-n2389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 10/16/2023] [Indexed: 03/02/2024]
Abstract
Objective The involvement of the inner ear in otosclerosis may lead to the development of cochlear otosclerosis. The aim of this study was to analyse changes in the chemical composition and microstructure of the stapes in the course of otosclerosis compared to healthy stapes. Materials and methods This analysis included 31 patients with otosclerosis and 9 patients without otosclerosis. Microanalytical and diffraction techniques were used to assess the elemental distribution and orientation topography of the stapes. Results The concentration of Ca2+ in the study group was significantly lower in the area of the anterior crus of the stapes than in the posterior crus. A reduction in the Ca2+/P3+ ratio in the anterior crus was associated with deteriorated bone conduction and tinnitus. Degradation of the stapes microstructure in the area of otosclerotic lesions was observed with scanning electron microscopy. Conclusions Bone remodelling is most significant at the closest location to typical otosclerotic lesions with hydroxyapatite porosity and scale-like bone formation according to scanning electron microscopy. There is a relationship between the disturbance of calcium metabolism and the development of clinical symptoms of cochlear otosclerosis.
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Affiliation(s)
- Maciej Wiatr
- Department of Otolaryngology, Jagiellonian University Medical College, Kraków, Poland
| | - Robert Bartoszewicz
- Department of Otolaryngology, Head and Neck Surgery, Medical University, Warsaw, Poland
| | - Kazimierz Niemczyk
- Department of Otolaryngology, Head and Neck Surgery, Medical University, Warsaw, Poland
| | - Agnieszka Wiatr
- Department of Otolaryngology, Jagiellonian University Medical College, Kraków, Poland
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3
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Wei Y, Yu Z, Wang L, Li X, Li N, Bai Q, Wang Y, Li R, Meng Y, Xu H, Wang X, Dong Y, Huang Z, Zhang XC, Zhao Y. Structural bases of inhibitory mechanism of Ca V1.2 channel inhibitors. Nat Commun 2024; 15:2772. [PMID: 38555290 PMCID: PMC10981686 DOI: 10.1038/s41467-024-47116-8] [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: 12/05/2022] [Accepted: 03/19/2024] [Indexed: 04/02/2024] Open
Abstract
The voltage-gated calcium channel CaV1.2 is essential for cardiac and vessel smooth muscle contractility and brain function. Accumulating evidence demonstrates that malfunctions of CaV1.2 are involved in brain and heart diseases. Pharmacological inhibition of CaV1.2 is therefore of therapeutic value. Here, we report cryo-EM structures of CaV1.2 in the absence or presence of the antirheumatic drug tetrandrine or antihypertensive drug benidipine. Tetrandrine acts as a pore blocker in a pocket composed of S6II, S6III, and S6IV helices and forms extensive hydrophobic interactions with CaV1.2. Our structure elucidates that benidipine is located in the DIII-DIV fenestration site. Its hydrophobic sidechain, phenylpiperidine, is positioned at the exterior of the pore domain and cradled within a hydrophobic pocket formed by S5DIII, S6DIII, and S6DIV helices, providing additional interactions to exert inhibitory effects on both L-type and T-type voltage gated calcium channels. These findings provide the structural foundation for the rational design and optimization of therapeutic inhibitors of voltage-gated calcium channels.
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Affiliation(s)
- Yiqing Wei
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhuoya Yu
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lili Wang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Xiaojing Li
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Na Li
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qinru Bai
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuhang Wang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Renjie Li
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yufei Meng
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hao Xu
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
| | - Xianping Wang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yanli Dong
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhuo Huang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, 100191, China.
| | - Xuejun Cai Zhang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yan Zhao
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Kelly MM, Sharma K, Wright CS, Yi X, Reyes Fernandez PC, Gegg AT, Gorrell TA, Noonan ML, Baghdady A, Sieger JA, Dolphin AC, Warden SJ, Deosthale P, Plotkin LI, Sankar U, Hum JM, Robling AG, Farach-Carson MC, Thompson WR. Loss of the auxiliary α 2δ 1 voltage-sensitive calcium channel subunit impairs bone formation and anabolic responses to mechanical loading. JBMR Plus 2024; 8:ziad008. [PMID: 38505532 PMCID: PMC10945727 DOI: 10.1093/jbmrpl/ziad008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/31/2023] [Accepted: 11/27/2023] [Indexed: 03/21/2024] Open
Abstract
Voltage-sensitive calcium channels (VSCCs) influence bone structure and function, including anabolic responses to mechanical loading. While the pore-forming (α1) subunit of VSCCs allows Ca2+ influx, auxiliary subunits regulate the biophysical properties of the pore. The α2δ1 subunit influences gating kinetics of the α1 pore and enables mechanically induced signaling in osteocytes; however, the skeletal function of α2δ1 in vivo remains unknown. In this work, we examined the skeletal consequences of deleting Cacna2d1, the gene encoding α2δ1. Dual-energy X-ray absorptiometry and microcomputed tomography imaging demonstrated that deletion of α2δ1 diminished bone mineral content and density in both male and female C57BL/6 mice. Structural differences manifested in both trabecular and cortical bone for males, while the absence of α2δ1 affected only cortical bone in female mice. Deletion of α2δ1 impaired skeletal mechanical properties in both sexes, as measured by three-point bending to failure. While no changes in osteoblast number or activity were found for either sex, male mice displayed a significant increase in osteoclast number, accompanied by increased eroded bone surface and upregulation of genes that regulate osteoclast differentiation. Deletion of α2δ1 also rendered the skeleton insensitive to exogenous mechanical loading in males. While previous work demonstrates that VSCCs are essential for anabolic responses to mechanical loading, the mechanism by which these channels sense and respond to force remained unclear. Our data demonstrate that the α2δ1 auxiliary VSCC subunit functions to maintain baseline bone mass and strength through regulation of osteoclast activity and also provides skeletal mechanotransduction in male mice. These data reveal a molecular player in our understanding of the mechanisms by which VSCCs influence skeletal adaptation.
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Affiliation(s)
- Madison M Kelly
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Karan Sharma
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Christian S Wright
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Xin Yi
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Perla C Reyes Fernandez
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Aaron T Gegg
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
| | - Taylor A Gorrell
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
| | - Megan L Noonan
- Department of Medical and Molecular Genetics, Indiana University, Indianapolis, IN 46202, United States
| | - Ahmed Baghdady
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Jacob A Sieger
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Annette C Dolphin
- Department of Neuroscience, Physiology and Pharmacology, University College of London, Gower Street, London WC1E 6BT, United Kingdom
| | - Stuart J Warden
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne Victoria 3086, DX 211319, Australia
| | - Padmini Deosthale
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Lilian I Plotkin
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Uma Sankar
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Julia M Hum
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Alexander G Robling
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Mary C Farach-Carson
- Department of Diagnostic & Biomedical Sciences, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX 77054, United States
| | - William R Thompson
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
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5
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Tanaka K, Ohara S, Matsuzaka T, Matsugaki A, Ishimoto T, Ozasa R, Kuroda Y, Matsuo K, Nakano T. Quantitative Threshold Determination of Auditory Brainstem Responses in Mouse Models. Int J Mol Sci 2023; 24:11393. [PMID: 37511152 PMCID: PMC10380451 DOI: 10.3390/ijms241411393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
The auditory brainstem response (ABR) is a scalp recording of potentials produced by sound stimulation, and is commonly used as an indicator of auditory function. However, the ABR threshold, which is the lowest audible sound pressure, cannot be objectively determined since it is determined visually using a measurer, and this has been a problem for several decades. Although various algorithms have been developed to objectively determine ABR thresholds, they remain lacking in terms of accuracy, efficiency, and convenience. Accordingly, we proposed an improved algorithm based on the mutual covariance at adjacent sound pressure levels. An ideal ABR waveform with clearly defined waves I-V was created; moreover, using this waveform as a standard template, the experimentally obtained ABR waveform was inspected for disturbances based on mutual covariance. The ABR testing was repeated if the value was below the established cross-covariance reference value. Our proposed method allowed more efficient objective determination of ABR thresholds and a smaller burden on experimental animals.
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Affiliation(s)
- Kenji Tanaka
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Shuma Ohara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Tadaaki Matsuzaka
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Aira Matsugaki
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Takuya Ishimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Ryosuke Ozasa
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Yukiko Kuroda
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
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6
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Li H, Korcari A, Ciufo D, Mendias CL, Rodeo SA, Buckley MR, Loiselle AE, Pitt GS, Cao C. Increased Ca 2+ signaling through Ca V 1.2 induces tendon hypertrophy with increased collagen fibrillogenesis and biomechanical properties. FASEB J 2023; 37:e23007. [PMID: 37261735 PMCID: PMC10254118 DOI: 10.1096/fj.202300607r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/03/2023] [Accepted: 05/17/2023] [Indexed: 06/02/2023]
Abstract
Tendons are tension-bearing tissues transmitting force from muscle to bone for body movement. This mechanical loading is essential for tendon development, homeostasis, and healing after injury. While Ca2+ signaling has been studied extensively for its roles in mechanotransduction, regulating muscle, bone, and cartilage development and homeostasis, knowledge about Ca2+ signaling and the source of Ca2+ signals in tendon fibroblast biology are largely unknown. Here, we investigated the function of Ca2+ signaling through CaV 1.2 voltage-gated Ca2+ channel in tendon formation. Using a reporter mouse, we found that CaV 1.2 is highly expressed in tendon during development and downregulated in adult homeostasis. To assess its function, we generated ScxCre;CaV 1.2TS mice that express a gain-of-function mutant CaV 1.2 in tendon. We found that mutant tendons were hypertrophic, with more tendon fibroblasts but decreased cell density. TEM analyses demonstrated increased collagen fibrillogenesis in the hypertrophic tendons. Biomechanical testing revealed that the hypertrophic tendons display higher peak load and stiffness, with no changes in peak stress and elastic modulus. Proteomic analysis showed no significant difference in the abundance of type I and III collagens, but mutant tendons had about two-fold increase in other ECM proteins such as tenascin C, tenomodulin, periostin, type XIV and type VIII collagens, around 11-fold increase in the growth factor myostatin, and significant elevation of matrix remodeling proteins including Mmp14, Mmp2, and cathepsin K. Taken together, these data highlight roles for increased Ca2+ signaling through CaV 1.2 on regulating expression of myostatin growth factor and ECM proteins for tendon collagen fibrillogenesis during tendon formation.
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Affiliation(s)
- Haiyin Li
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopeadics, University of Rochester Medical Center, Rochester, NY, USA
| | - Antonion Korcari
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA
| | - David Ciufo
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopeadics, University of Rochester Medical Center, Rochester, NY, USA
| | | | - Scott A. Rodeo
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, NY, USA
| | - Mark R. Buckley
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA
| | - Alayna E. Loiselle
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopeadics, University of Rochester Medical Center, Rochester, NY, USA
| | - Geoffrey S. Pitt
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Chike Cao
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopeadics, University of Rochester Medical Center, Rochester, NY, USA
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7
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Li H, Korcari A, Ciufo D, Mendias CL, Rodeo SA, Buckley MR, Loiselle AE, Pitt GS, Cao C. Increased Ca 2+ signaling through Ca V 1.2 induces tendon hypertrophy with increased collagen fibrillogenesis and biomechanical properties. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.24.525119. [PMID: 36747837 PMCID: PMC9900778 DOI: 10.1101/2023.01.24.525119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Tendons are tension-bearing tissues transmitting force from muscle to bone for body movement. This mechanical loading is essential for tendon development, homeostasis, and healing after injury. While Ca 2+ signaling has been studied extensively for its roles in mechanotransduction, regulating muscle, bone and cartilage development and homeostasis, knowledge about Ca 2+ signaling and the source of Ca 2+ signals in tendon fibroblast biology are largely unknown. Here, we investigated the function of Ca 2+ signaling through Ca V 1.2 voltage-gated Ca 2+ channel in tendon formation. Using a reporter mouse, we found that Ca V 1.2 is highly expressed in tendon during development and downregulated in adult homeostasis. To assess its function, we generated ScxCre;Ca V 1.2 TS mice that express a gain-of-function mutant Ca V 1.2 channel (Ca V 1.2 TS ) in tendon. We found that tendons in the mutant mice were approximately 2/3 larger and had more tendon fibroblasts, but the cell density of the mutant mice decreased by around 22%. TEM analyses demonstrated increased collagen fibrillogenesis in the hypertrophic tendon. Biomechanical testing revealed that the hypertrophic Achilles tendons display higher peak load and stiffness, with no changes in peak stress and elastic modulus. Proteomics analysis reveals no significant difference in the abundance of major extracellular matrix (ECM) type I and III collagens, but mutant mice had about 2-fold increase in other ECM proteins such as tenascin C, tenomodulin, periostin, type XIV and type VIII collagens, around 11-fold increase in the growth factor of TGF-β family myostatin, and significant elevation of matrix remodeling proteins including Mmp14, Mmp2 and cathepsin K. Taken together, these data highlight roles for increased Ca 2+ signaling through Ca V 1.2 on regulating expression of myostatin growth factor and ECM proteins for tendon collagen fibrillogenesis during tendon formation.
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8
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Shi M, Cao L, Ding D, Shi L, Hu Y, Qi G, Zhan L, Zhu Y, Yu W, Lv P, Yu N. Acute Noise Causes Down-Regulation of ECM Protein Expression in Guinea Pig Cochlea. Mol Biotechnol 2022; 65:774-785. [PMID: 36209333 DOI: 10.1007/s12033-022-00557-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 09/05/2022] [Indexed: 11/24/2022]
Abstract
Proteomics technology reveals the marker proteins, potential pathogenesis, and intervention targets after noise-induced hearing loss. To study the differences in cochlea protein expression before and after noise exposure using proteomics to reveal the pathological mechanism of noise-induced hearing loss (NIHL). A guinea pig NIHL model was established to test the ABR thresholds before and after noise exposure. The proteomics technology was used to study the mechanism of differential protein expression in the cochlea by noise stimulation. The average hearing threshold of guinea pigs on the first day after noise exposure was 57.00 ± 6.78 dB Sound pressure level (SPL); the average hearing threshold on the seventh day after noise exposure was 45.83 ± 6.07 dB SPL. The proteomics technology identified 3122 different inner ear proteins, of which six proteins related to the hearing were down-regulation: Tenascin C, Collagen Type XI alpha two chains, Collagen Type II alpha one chain, Thrombospondin 2, Collagen Type XI alpha one chain and Ribosomal protein L38, and are enriched in protein absorption, focal adhesion, and extracellular matrix receptor pathways. Impulse noise can affect the expression of differential proteins through focal adhesion pathways. This data can provide an experimental basis for the research on the prevention and treatment of NIHL.
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Affiliation(s)
- Min Shi
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,Suining Central Hospital, Suining, 629000, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Lei Cao
- The First Clinical Medical College of Gansu University of Traditional Chinese Medicine, Lanzhou, 730000, China
| | - Daxiong Ding
- Department of Otorhinolaryngology, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Lei Shi
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Yiyong Hu
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Guowei Qi
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Li Zhan
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Yuhua Zhu
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
| | - Wenxing Yu
- Suining Central Hospital, Suining, 629000, China
| | - Ping Lv
- Department of Otorhinolaryngology, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China
| | - Ning Yu
- Senior Department of Otolaryngology Head and Neck Surgery, The Sixth Medical Center of PLA General Hospital, Beijing, 100853, China. .,National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China.
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9
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Ren J, Sun Y, Dai B, Song W, Tan T, Guo L, Cao H, Wu Y, Hu W, Wang Z, Haiping D. Association between Ca2+ Signaling Pathway-Related Gene Polymorphism and Age-Related Hearing Loss in Qingdao Chinese Elderly. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422100076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Bohner M, Maazouz Y, Ginebra MP, Habibovic P, Schoenecker JG, Seeherman H, van den Beucken JJ, Witte F. Sustained local ionic homeostatic imbalance caused by calcification modulates inflammation to trigger heterotopic ossification. Acta Biomater 2022; 145:1-24. [PMID: 35398267 DOI: 10.1016/j.actbio.2022.03.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 12/15/2022]
Abstract
Heterotopic ossification (HO) is a condition triggered by an injury leading to the formation of mature lamellar bone in extraskeletal soft tissues. Despite being a frequent complication of orthopedic and trauma surgery, brain and spinal injury, the etiology of HO is poorly understood. The aim of this study is to evaluate the hypothesis that a sustained local ionic homeostatic imbalance (SLIHI) created by mineral formation during tissue calcification modulates inflammation to trigger HO. This evaluation also considers the role SLIHI could play for the design of cell-free, drug-free osteoinductive bone graft substitutes. The evaluation contains five main sections. The first section defines relevant concepts in the context of HO and provides a summary of proposed causes of HO. The second section starts with a detailed analysis of the occurrence and involvement of calcification in HO. It is followed by an explanation of the causes of calcification and its consequences. This allows to speculate on the potential chemical modulators of inflammation and triggers of HO. The end of this second section is devoted to in vitro mineralization tests used to predict the ectopic potential of materials. The third section reviews the biological cascade of events occurring during pathological and material-induced HO, and attempts to propose a quantitative timeline of HO formation. The fourth section looks at potential ways to control HO formation, either acting on SLIHI or on inflammation. Chemical, physical, and drug-based approaches are considered. Finally, the evaluation finishes with a critical assessment of the definition of osteoinduction. STATEMENT OF SIGNIFICANCE: The ability to regenerate bone in a spatially controlled and reproducible manner is an essential prerequisite for the treatment of large bone defects. As such, understanding the mechanism leading to heterotopic ossification (HO), a condition triggered by an injury leading to the formation of mature lamellar bone in extraskeletal soft tissues, would be very useful. Unfortunately, the mechanism(s) behind HO is(are) poorly understood. The present study reviews the literature on HO and based on it, proposes that HO can be caused by a combination of inflammation and calcification. This mechanism helps to better understand current strategies to prevent and treat HO. It also shows new opportunities to improve the treatment of bone defects in orthopedic and dental procedures.
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11
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Ahmed ASI, Sheng MHC, Lau KHW, Wilson SM, Wongworawat MD, Tang X, Ghahramanpouri M, Nehme A, Xu Y, Abdipour A, Zhang XB, Wasnik S, Baylink DJ. Calcium released by osteoclastic resorption stimulates autocrine/paracrine activities in local osteogenic cells to promote coupled bone formation. Am J Physiol Cell Physiol 2022; 322:C977-C990. [PMID: 35385325 PMCID: PMC9109806 DOI: 10.1152/ajpcell.00413.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A major cause of osteoporosis is impaired coupled bone formation. Mechanistically, both osteoclast-derived and bone-derived growth factors have been previously implicated. We hypothesize that the release of bone calcium during osteoclastic bone resorption is essential for coupled bone formation. Osteoclastic resorption increases interstitial fluid calcium locally from the normal 1.8 mM up to 5 mM. MC3T3-E1 osteoprogenitors, cultured in a 3.6 mM calcium medium, demonstrated that calcium signaling stimulated osteogenic cell proliferation, differentiation, and migration. Calcium channel knockdown studies implicated calcium channels, Cav1.2, store-operated calcium entry (SOCE), and calcium-sensing receptor (CaSR) in regulating bone cell anabolic activities. MC3T3-E1 cultured in a 3.6 mM calcium medium expressed increased gene expression of Wnt signaling and growth factors platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), and bone morphogenic protein-2 (BMP 2). Our coupling model of bone formation, the Receptor activator of nuclear factor-kappa-Β ligand (RANKL) treated mouse calvaria, confirmed the role of calcium signaling in coupled bone formation by exhibiting increased gene expression for osterix and osteocalcin. Critically, dual immunocytochemistry showed that RANKL treatment increased osterix positive cells and increased fluorescence intensity of Cav1.2 and CaSR protein expression per osterix positive cell. The data established that calcium released by osteoclasts contributed to the regulation of coupled bone formation. CRISPR/Cas-9 knockout of Cav1.2 in osteoprogenitors cultured in basal calcium medium caused a >80% decrease in the expression of downstream osteogenic genes, emphasizing the large magnitude of the effect of calcium signaling. Thus, calcium signaling is a major regulator of coupled bone formation.
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Affiliation(s)
- Abu Shufian Ishtiaq Ahmed
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States.,The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Matilda H C Sheng
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States.,Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center, Loma Linda, California, United States
| | - Kin-Hing William Lau
- Musculoskeletal Disease Center, Jerry L. Pettis Memorial Veterans Affairs Medical Center, Loma Linda, California, United States
| | - Sean M Wilson
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - M Daniel Wongworawat
- Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, California, United States
| | - Xiaolei Tang
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine, Long Island University, Brookville, NY, United States
| | - Mahdis Ghahramanpouri
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States
| | - Antoine Nehme
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States
| | - Yi Xu
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States.,Division of Hematology and Oncology, Department of Medicine, Loma Linda University and Loma Linda University Cancer Center, Loma Linda, CA, United States
| | - Amir Abdipour
- Division of Nephrology, Department of Medicine, Loma Linda University, Loma Linda, CA, United States
| | - Xiao-Bing Zhang
- Department of Neurosurgery, Loma Linda University, Loma Linda, California, United States
| | - Samiksha Wasnik
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States
| | - David J Baylink
- Department of Medicine, Division of Regenerative Medicine, Loma Linda University, Loma Linda, California, United States
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12
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Matsui M, Bouchareb R, Storto M, Hussain Y, Gregg A, Marx SO, Pitt GS. Increased Ca2+ influx through CaV1.2 drives aortic valve calcification. JCI Insight 2022; 7:155569. [PMID: 35104251 PMCID: PMC8983132 DOI: 10.1172/jci.insight.155569] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 01/28/2022] [Indexed: 11/17/2022] Open
Abstract
Calcific aortic valve disease (CAVD) is heritable as revealed by recent genome wide association studies. While polymorphisms linked to increased expression of CACNA1C, encoding the CaV1.2 L-type voltage-gated Ca2+ channel, and increased Ca2+ signaling are associated with CAVD, whether increased Ca2+ influx through the druggable CaV1.2 is causal for calcific aortic valve disease is unknown. With surgically removed aortic valves from patients, we confirmed the association between increased CaV1.2 expression and CAVD. We extended our studies with a transgenic mouse model that mimics increased CaV1.2 expression in within aortic valve interstitial cells (VICs). In young mice maintained on normal chow, we observed dystrophic valve lesions that mimic changes found in pre-symptomatic CAVD, and showed activation of chondrogenic and osteogenic transcriptional regulators within these valve lesions. Chronic administration of verapamil, a clinically used CaV1.2 antagonist, slowed the progression of lesion development in vivo. Exploiting VIC cultures we demonstrated that increased Ca2+ influx through CaV1.2 drives signaling programs that lead to myofibroblast activation of VICs and upregulation of genes associated with aortic valve calcification. Our data support a causal role for Ca2+ influx through CaV1.2 in CAVD and suggest that early treatment with Ca2+ channel blockers is an effective therapeutic strategy.
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Affiliation(s)
- Maiko Matsui
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, United States of America
| | - Rihab Bouchareb
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, United States of America
| | - Mara Storto
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, United States of America
| | - Yasin Hussain
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, United States of America
| | - Andrew Gregg
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, United States of America
| | - Steven O Marx
- Division of Cardiology, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, United States of America
| | - Geoffrey S Pitt
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, United States of America
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13
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Wright CS, Robling AG, Farach-Carson MC, Thompson WR. Skeletal Functions of Voltage Sensitive Calcium Channels. Curr Osteoporos Rep 2021; 19:206-221. [PMID: 33721180 PMCID: PMC8216424 DOI: 10.1007/s11914-020-00647-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/16/2020] [Indexed: 12/15/2022]
Abstract
Voltage-sensitive calcium channels (VSCCs) are ubiquitous multimeric protein complexes that are necessary for the regulation of numerous physiological processes. VSCCs regulate calcium influx and various intracellular processes including muscle contraction, neurotransmission, hormone secretion, and gene transcription, with function specificity defined by the channel's subunits and tissue location. The functions of VSCCs in bone are often overlooked since bone is not considered an electrically excitable tissue. However, skeletal homeostasis and adaptation relies heavily on VSCCs. Inhibition or deletion of VSCCs decreases osteogenesis, impairs skeletal structure, and impedes anabolic responses to mechanical loading. RECENT FINDINGS: While the functions of VSCCs in osteoclasts are less clear, VSCCs have distinct but complementary functions in osteoblasts and osteocytes. PURPOSE OF REVIEW: This review details the structure, function, and nomenclature of VSCCs, followed by a comprehensive description of the known functions of VSCCs in bone cells and their regulation of bone development, bone formation, and mechanotransduction.
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Affiliation(s)
- Christian S Wright
- Department of Physical Therapy, School of Health and Rehabilitation Sciences, Indiana University, Indianapolis, IN, 46202, USA
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN, 46202, USA
| | - Alexander G Robling
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN, 46202, USA
- Department of Anatomy & Cell Biology, Indiana University, Indianapolis, IN, 46202, USA
| | - Mary C Farach-Carson
- Department of Diagnostic & Biomedical Sciences, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, 77054, USA
| | - William R Thompson
- Department of Physical Therapy, School of Health and Rehabilitation Sciences, Indiana University, Indianapolis, IN, 46202, USA.
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN, 46202, USA.
- Department of Anatomy & Cell Biology, Indiana University, Indianapolis, IN, 46202, USA.
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14
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Abstract
The identification of a gain-of-function mutation in CACNA1C as the cause of Timothy syndrome, a rare disorder characterized by cardiac arrhythmias and syndactyly, highlighted roles for the L-type voltage-gated Ca2+ channel CaV1.2 in nonexcitable cells. Previous studies in cells and animal models had suggested that several voltage-gated Ca2+ channels (VGCCs) regulated critical signaling events in various cell types that are not expected to support action potentials, but definitive data were lacking. VGCCs occupy a special position among ion channels, uniquely able to translate membrane excitability into the cytoplasmic Ca2+ changes that underlie the cellular responses to electrical activity. Yet how these channels function in cells not firing action potentials and what the consequences of their actions are in nonexcitable cells remain critical questions. The development of new animal and cellular models and the emergence of large data sets and unbiased genome screens have added to our understanding of the unanticipated roles for VGCCs in nonexcitable cells. Here, we review current knowledge of VGCC regulation and function in nonexcitable tissues and cells, with the goal of providing a platform for continued investigation.
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Affiliation(s)
- Geoffrey S Pitt
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY 10021, USA;
| | - Maiko Matsui
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY 10021, USA;
| | - Chike Cao
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY 10021, USA;
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15
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Sasaki F, Hayashi M, Ono T, Nakashima T. The regulation of RANKL by mechanical force. J Bone Miner Metab 2021; 39:34-44. [PMID: 32889574 DOI: 10.1007/s00774-020-01145-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 08/14/2020] [Indexed: 12/15/2022]
Abstract
Receptor activator of nuclear factor-κB ligand (RANKL) is a key mediator of osteoclast differentiation and bone resorption. Osteoblast-lineage cells including osteoblasts and osteocytes express RANKL, which is regulated by several different factors, including hormones, cytokines, and mechanical forces. In vivo and in vitro analyses have demonstrated that various types of mechanosensing proteins on the cell membrane (i.e. mechanosensors) and intracellular mechanosignaling proteins play essential roles in the differentiation and functions of osteoblasts, osteoclasts, and osteocytes via soluble factors, such as sclerostin, Wnt ligands, and RANKL. This section provides an overview of the in vivo and in vitro evidence for the regulation of RANKL expression by mechanosensing and mechanotransduction.
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Affiliation(s)
- Fumiyuki Sasaki
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
- Core Research for Evolutional Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Mikihito Hayashi
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
- Precursory Research for Innovative Medical Care (PRIME), Japan Agency for Medical Research and Development, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Takehito Ono
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
- Core Research for Evolutional Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Tomoki Nakashima
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
- Core Research for Evolutional Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Yushima 1-5-45, Bunkyo-ku, Tokyo, 113-8549, Japan.
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16
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Ozekin YH, Isner T, Bates EA. Ion Channel Contributions to Morphological Development: Insights From the Role of Kir2.1 in Bone Development. Front Mol Neurosci 2020; 13:99. [PMID: 32581710 PMCID: PMC7296152 DOI: 10.3389/fnmol.2020.00099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/08/2020] [Indexed: 12/21/2022] Open
Abstract
The role of ion channels in neurons and muscles has been well characterized. However, recent work has demonstrated both the presence and necessity of ion channels in diverse cell types for morphological development. For example, mutations that disrupt ion channels give rise to abnormal structural development in species of flies, frogs, fish, mice, and humans. Furthermore, medications and recreational drugs that target ion channels are associated with higher incidence of birth defects in humans. In this review we establish the effects of several teratogens on development including epilepsy treatment drugs (topiramate, valproate, ethosuximide, phenobarbital, phenytoin, and carbamazepine), nicotine, heat, and cannabinoids. We then propose potential links between these teratogenic agents and ion channels with mechanistic insights from model organisms. Finally, we talk about the role of a particular ion channel, Kir2.1, in the formation and development of bone as an example of how ion channels can be used to uncover important processes in morphogenesis. Because ion channels are common targets of many currently used medications, understanding how ion channels impact morphological development will be important for prevention of birth defects. It is becoming increasingly clear that ion channels have functional roles outside of tissues that have been classically considered excitable.
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Affiliation(s)
- Yunus H Ozekin
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Trevor Isner
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Emily A Bates
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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