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Protein tyrosine phosphatases in skeletal development and diseases. Bone Res 2022; 10:10. [PMID: 35091552 PMCID: PMC8799702 DOI: 10.1038/s41413-021-00181-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/29/2021] [Accepted: 09/14/2021] [Indexed: 12/24/2022] Open
Abstract
Skeletal development and homeostasis in mammals are modulated by finely coordinated processes of migration, proliferation, differentiation, and death of skeletogenic cells originating from the mesoderm and neural crest. Numerous molecular mechanisms are involved in these regulatory processes, one of which is protein posttranslational modifications, particularly protein tyrosine phosphorylation (PYP). PYP occurs mainly through the action of protein tyrosine kinases (PTKs), modifying protein enzymatic activity, changing its cellular localization, and aiding in the assembly or disassembly of protein signaling complexes. Under physiological conditions, PYP is balanced by the coordinated action of PTKs and protein tyrosine phosphatases (PTPs). Dysregulation of PYP can cause genetic, metabolic, developmental, and oncogenic skeletal diseases. Although PYP is a reversible biochemical process, in contrast to PTKs, little is known about how this equilibrium is modulated by PTPs in the skeletal system. Whole-genome sequencing has revealed a large and diverse superfamily of PTP genes (over 100 members) in humans, which can be further divided into cysteine (Cys)-, aspartic acid (Asp)-, and histidine (His)-based PTPs. Here, we review current knowledge about the functions and regulatory mechanisms of 28 PTPs involved in skeletal development and diseases; 27 of them belong to class I and II Cys-based PTPs, and the other is an Asp-based PTP. Recent progress in analyzing animal models that harbor various mutations in these PTPs and future research directions are also discussed. Our literature review indicates that PTPs are as crucial as PTKs in supporting skeletal development and homeostasis.
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Yang J, Gao J, Gao F, Zhao Y, Deng B, Mu X, Xu L. Extracellular vesicles-encapsulated microRNA-29b-3p from bone marrow-derived mesenchymal stem cells promotes fracture healing via modulation of the PTEN/PI3K/AKT axis. Exp Cell Res 2022; 412:113026. [PMID: 35026284 DOI: 10.1016/j.yexcr.2022.113026] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/07/2022] [Accepted: 01/09/2022] [Indexed: 12/20/2022]
Abstract
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are well-established as vital regulators of fracture healing, whereas angiogenesis is one of the critical processes during the course of bone healing. Accordingly, the current study sought to determine the functions of microRNA (miR)-29b-3p from BM-MSCs-derived extracellular vesicles (EVs) on the angiogenesis of fracture healing via the PTEN/PI3K/AKT axis. Firstly, BM-MSCs-EVs were extracted and identified. The lentiviral protocol was adopted to construct miR-29b-3pKD-BMSCs or miR-negative control-BMSCs, which were then co-cultured with human umbilical vein endothelial cells (HUVECs) in vitro to determine the roles of EVs-encapsulated miR-29b-3p on the proliferation, migration, and angiogenesis of HUVECs in vitro with the help of a CCK-8 assay, scratch test, and tube formation assay. Subsequent database prediction, luciferase activity assay, RT-qPCR, and Western blot assay findings identified the downstream target gene of miR-29b-3p, PTEN, and a signaling pathway, PI3K/AKT. Furthermore, the application of si-PTEN attenuated the effects induced by miR-29b-3pKD-EVs. Finally, a mouse model of femoral fracture was established with a locally instilled injection of equal volumes of BM-MSCs-EVs and miR-29b-3pKD-BM-MSCs-EVs. Notably, the mice treated with BMSC-EVs presented with enhanced neovascularization at the fracture site, in addition to increased bone volume (BV), BV/tissue volume, and mean bone mineral density; whereas miR-29b-3pKD-BMSCs-EVs-treated mice exhibited decreased vessel density with poor fracture healing capacity. Collectively, our findings elicited that BM-MSCs-EVs carrying miR-29b-3p were endocytosed by HUVECs, which consequently suppressed the PTEN expression and activated the PI3K/AKT pathway, thereby promoting HUVEC proliferation, migration, and angiogenesis, and ultimately facilitating fracture healing.
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Affiliation(s)
- Jizhou Yang
- Department of Orthopaedics, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, China
| | - Jian Gao
- Mckelvey School of Engineering at Washington University in St. Louis, University City, Missouri, 63130, USA
| | - Feng Gao
- Department of Surgery, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Tongzhou District, Beijing, 101121, China
| | - Yi Zhao
- Department of Orthopaedics, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, China
| | - Bowen Deng
- Department of Orthopaedics, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, China
| | - Xiaohong Mu
- Department of Orthopaedics, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, China.
| | - Lin Xu
- Department of Orthopaedics, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, China.
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Shape fidelity, mechanical and biological performance of 3D printed polycaprolactone-bioactive glass composite scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 134:112540. [DOI: 10.1016/j.msec.2021.112540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/19/2022]
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Abstract
One of the primary functions of bone is to support the skeleton by withstanding load. In the diseased state, bone's ability to perform this function is altered. Quantification of the features of bone that support its functional behavior, and how they may change with disease, is accomplished through mechanical testing. As such, mechanical testing is a useful tool for scientists studying orthopedic-related diseases. Furthermore, a common animal model used to investigate disease and its treatment is the mouse. Therefore, in this chapter we (1) describe central concepts of mechanical testing, (2) describe factors that influence the mechanical behavior of bone, and (3) describe the application of a widely used mechanical testing technique, four-point bending, to the mouse bone for characterization of its structural properties.
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Lim KE, Hoggatt AM, Bullock WA, Horan DJ, Yokota H, Pavalko FM, Robling AG. Pten deletion in Dmp1-expressing cells does not rescue the osteopenic effects of Wnt/β-catenin suppression. J Cell Physiol 2020; 235:9785-9794. [PMID: 32529635 DOI: 10.1002/jcp.29792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 11/06/2022]
Abstract
Skeletal homeostasis is sensitive to perturbations in Wnt signaling. Beyond its role in the bone, Wnt is a major target for pharmaceutical inhibition in a wide range of diseases, most notably cancers. Numerous clinical trials for Wnt-based candidates are currently underway, and Wnt inhibitors will likely soon be approved for clinical use. Given the bone-suppressive effects accompanying Wnt inhibition, there is a need to expose alternate pathways/molecules that can be targeted to counter the deleterious effects of Wnt inhibition on bone properties. Activation of the Pi3k/Akt pathway via Pten deletion is one possible osteoanabolic pathway to exploit. We investigated whether the osteopenic effects of β-catenin deletion from bone cells could be rescued by Pten deletion in the same cells. Mice carrying floxed alleles for Pten and β-catenin were bred to Dmp1-Cre mice to delete Pten alone, β-catenin alone, or both genes from the late-stage osteoblast/osteocyte population. The mice were assessed for bone mass, density, strength, and formation parameters to evaluate the potential rescue effect of Pten deletion in Wnt-impaired mice. Pten deletion resulted in high bone mass and β-catenin deletion resulted in low bone mass. Compound mutants had bone properties similar to β-catenin mutant mice, or surprisingly in some assays, were further compromised beyond β-catenin mutants. Pten inhibition, or one of its downstream nodes, is unlikely to protect against the bone-wasting effects of Wnt/βcat inhibition. Other avenues for preserving bone mass in the presence of Wnt inhibition should be explored to alleviate the skeletal side effects of Wnt inhibitor-based therapies.
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Affiliation(s)
- Kyung-Eun Lim
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - April M Hoggatt
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Whitney A Bullock
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Daniel J Horan
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Hiroki Yokota
- Indiana Center for Musculoskeletal Health, Indianapolis, Indiana.,Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana
| | - Frederick M Pavalko
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana.,Indiana Center for Musculoskeletal Health, Indianapolis, Indiana
| | - Alexander G Robling
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, Indiana.,Indiana Center for Musculoskeletal Health, Indianapolis, Indiana.,Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, Indiana.,Richard L. Roudebush VA Medical Center, Indianapolis, Indiana
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Xiong Y, Cao F, Hu L, Yan C, Chen L, Panayi AC, Sun Y, Zhou W, Zhang P, Wu Q, Xue H, Liu M, Liu Y, Liu J, Abududilibaier A, Mi B, Liu G. miRNA-26a-5p Accelerates Healing via Downregulation of PTEN in Fracture Patients with Traumatic Brain Injury. MOLECULAR THERAPY-NUCLEIC ACIDS 2019; 17:223-234. [PMID: 31272072 PMCID: PMC6610686 DOI: 10.1016/j.omtn.2019.06.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/25/2019] [Accepted: 06/01/2019] [Indexed: 01/11/2023]
Abstract
Patients who sustain a traumatic brain injury (TBI) are known to have a significantly quicker fracture healing time than patients with isolated fractures, but the underlying mechanism has yet to be identified. In this study, we found that the upregulation of miRNA-26a-5p induced by TBI correlated with a decrease in phosphatase and tensin homolog (PTEN) in callus formation. In vitro, overexpressing miRNA-26a-5p inhibited PTEN expression and accelerated osteoblast differentiation, whereas silencing of miRNA-26a-5p inhibited osteoblast activity. Reduction of PTEN facilitated osteoblast differentiation via the PI3K/AKT signaling pathway. Through luciferase assays, we found evidence that PTEN is a miRNA-26a-5p target gene that negatively regulates the differentiation of osteoblasts. Moreover, the present study confirmed that preinjection of agomiR-26a-5p leads to increased bone formation. Collectively, these results indicate that miRNA-26a-5p overexpression may be a key factor governing the improved fracture healing observed in TBI patients after the downregulation of PTEN and PI3K/AKT signaling. Upregulation of miRNA-26a-5p may therefore be a promising therapeutic strategy for promoting fracture healing.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Peng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Qipeng Wu
- Department of Orthopaedics, Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Mengfei Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yi Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jing Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Abudula Abududilibaier
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Wang L, Zhu LX, Wang Z, Lou AJ, Yang YX, Guo Y, Liu S, Zhang C, Zhang Z, Hu HS, Yang B, Zhang P, Ouyang HW, Zhang ZY. Development of a centrally vascularized tissue engineering bone graft with the unique core-shell composite structure for large femoral bone defect treatment. Biomaterials 2018; 175:44-60. [PMID: 29800757 DOI: 10.1016/j.biomaterials.2018.05.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/10/2018] [Accepted: 05/12/2018] [Indexed: 01/09/2023]
Abstract
Great effort has been spent to promote the vascularization of tissue engineering bone grafts (TEBG) for improved therapeutic outcome. However, the thorough vascularization especially in the central region still remained as a major challenge for the clinical translation of TEBG. Here, we developed a new strategy to construct a centrally vascularized TEBG (CV-TEBG) with unique core-shell composite structure, which is consisted of an angiogenic core and an osteogenic shell. The in vivo evaluation in rabbit critical sized femoral defect was conducted to meticulously compare CV-TEBG to other TEBG designs (TEBG with osteogenic shell alone, or angiogenic core alone or angiogenic core+shell). Microfil-enhanced micro-CT analysis has been shown that CV-TEBG could outperform TEBG with pure osteogenic or angiogenic component for neo-vascularization. CV-TEBG achieved a much higher and more homogenous vascularization throughout the whole scaffold (1.52-38.91 folds, p < 0.01), and generated a unique burrito-like vascular network structure to perfuse both the central and peripheral regions of TEBG, indicating a potential synergistic effect between the osteogenic shell and angiogenic core in CV-TEBG to enhance neo-vascularization. Moreover, CV-TEBG has generated more new bone tissue than other groups (1.99-83.50 folds, p < 0.01), achieved successful bridging defect with the formation of both cortical bone like tissue externally and cancellous bone like tissue internally, and restored approximately 80% of the stiffness of the defected femur (benchmarked to the intact femur). It has been further observed that different bone regeneration patterns occurred in different TEBG implants and closely related to their vascularization patterns, revealing the potential profound influence of vascularization patterns on the osteogenesis pattern during defect healing.
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Affiliation(s)
- Le Wang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China.
| | - Li-Xin Zhu
- Department of Orthopaedic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Zhao Wang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Ai-Ju Lou
- Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Department of Rheumatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Yi-Xi Yang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Yuan Guo
- Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Song Liu
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Chi Zhang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Zheng Zhang
- Department of Cardiology, The General Hospital of the PLA Rocket Force, Beijing 100088, China
| | - Han-Sheng Hu
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Bo Yang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Ping Zhang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Hong-Wei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University-University of Edinburgh Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China; China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China
| | - Zhi-Yong Zhang
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; Translational Research Centre of Regenerative Medicine and 3D Printing Technologies, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China; China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China.
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Jiang F, Liu S, Chen A, Li BY, Robling AG, Chen J, Yokota H. Finite Element Analysis of the Mouse Distal Femur with Tumor Burden in Response to Knee Loading. INTERNATIONAL JOURNAL OF ORTHOPAEDICS (HONG KONG) 2018; 5:863-871. [PMID: 30505850 PMCID: PMC6261479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Breast cancer-associated bone metastasis induces bone loss, followed by an increased risk of bone fracture. To develop a strategy for preventing tumor growth and protecting bone, an understanding of the mechanical properties of bone under tumor burden is indispensable. Using a mouse model of mammary tumor, we conducted finite element analysis (FEA) of two bone samples from the distal femur. One sample was from a placebo-treated mouse, and the other was from a mouse treated with the investigational drug candidate, PD407824, an inhibitor of checkpoint kinases. Mechanical testing and microCT images revealed that bone strength is improved by administration of PD407824. In response to loading to the knee, FEA predicted that the peaks of von Mises stress, an indicator of fracture yielding, as well as the third principal compressive stress, were higher in the placebo-treated femur than the drug-treated femur. Higher peak stresses in trabecular segments were observed in the lateral condyle, a critical region for integrity of the knee joint. Collectively, this FE study supports the notion that mechanical weakening of the femur was observed in the tumor-invaded trabecular bone, and chemical agents such as PD407824 may potentially assist in preventing bone loss and bone fracture.
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Affiliation(s)
- Feifei Jiang
- Department of Mechanical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - Shengzhi Liu
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Andy Chen
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - Bai-Yan Li
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Alexander G. Robling
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jie Chen
- Department of Mechanical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
| | - Hiroki Yokota
- Department of Mechanical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202, USA
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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Liu S, Liu Y, Minami K, Chen A, Wan Q, Yin Y, Gan L, Xu A, Matsuura N, Koizumi M, Liu Y, Na S, Li J, Nakshatri H, Li BY, Yokota H. Inhibiting checkpoint kinase 1 protects bone from bone resorption by mammary tumor in a mouse model. Oncotarget 2018; 9:9364-9378. [PMID: 29507695 PMCID: PMC5823640 DOI: 10.18632/oncotarget.24286] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 01/13/2018] [Indexed: 12/22/2022] Open
Abstract
DNA damage response plays a critical role in tumor growth, but little is known about its potential role in bone metabolism. We employed selective inhibitors of Chk1 and examined their effects on the proliferation and migration of mammary tumor cells as well as the development of osteoblasts and osteoclasts. Further, using a mouse model of bone metastasis we evaluated the effects of Chk1 inhibitors on bone quality. Chk1 inhibitors blocked the proliferation, survival, and migration of tumor cells in vitro and suppressed the development of bone-resorbing osteoclasts by downregulating NFATc1. In the mouse model, Chk1 inhibitor reduced osteolytic lesions and prevented mechanical weakening of the femur and tibia. Analysis of RNA-seq expression data indicated that the observed effects were mediated through the regulation of eukaryotic translation initiation factor 2 alpha, stress to the endoplasmic reticulum, S100 proteins, and bone remodeling-linked genes. Our findings suggest that targeting Chk1 signaling without adding DNA damaging agents may protect bone from degradation while suppressing tumor growth and migration.
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Affiliation(s)
- Shengzhi Liu
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin 150081, China.,Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Yang Liu
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin 150081, China.,Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Kazumasa Minami
- Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA.,Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine Suita, Osaka 565-0871, Japan
| | - Andy Chen
- Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Qiaoqiao Wan
- Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Yukun Yin
- Department of Biology, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Liangying Gan
- Department of Biology, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Aihua Xu
- Department of Biology, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Nariaki Matsuura
- Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka 537-8511, Japan
| | - Masahiko Koizumi
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine Suita, Osaka 565-0871, Japan
| | - Yunlong Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sungsoo Na
- Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Jiliang Li
- Department of Biology, Indiana University at Purdue University, Indianapolis, IN 46202, USA
| | - Harikrishna Nakshatri
- Department of Surgery, Simon Cancer Research Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Bai-Yan Li
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin 150081, China
| | - Hiroki Yokota
- Department of Biomedical Engineering, Indiana University at Purdue University, Indianapolis, IN 46202, USA
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Zhou J, Hu Y, Chen Y, Yang L, Song J, Tang Y, Deng F, Zheng L. Dicer-dependent pathway contribute to the osteogenesis mediated by regulation of Runx2. Am J Transl Res 2016; 8:5354-5369. [PMID: 28078008 PMCID: PMC5209488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
Osteogenesis is mediated by sophisticated interactions of various molecular functions and biological processes, including post-transcriptional regulation. A range of miRNAs have been reported to regulate bone homeostasis and osteoblasts differentiation either positively or negatively through multiple signaling pathways. RNase III endonuclease Dicer is the key enzyme required for the biogenesis of miRNAs and small interfering RNAs. To determine the global influence of miRNAs on regulation of osteogenesis of pre-osteoblast cells, the transcriptional regulation of Dicer and the function of Dicer during osteoblast differentiation and mineralization were investigated. Runx2 binding directly to the Dicer promoter region was characterized in MC3T3-E1 cells by chromatin immunoprecipitation (ChIP) and luciferase promoter reporter assays. Overexpression or knockdown of Runx2 resulted in increase or decrease of Dicer expression, respectively. Furthermore, abatement of Dicer in MC3T3-E1 cells down-regulated the expression of osteogenic marker genes and mineralization ability, at least partly involving Dicer-dependent processing of the miR-21a-5p targeting PTEN via pAKT/pGSK3β/β-catenin signaling pathways. Taken together, the study demonstrates the role of Dicer in osteogenesis and suggests that Dicer is required, in part, for Runx2 regulation of osteoblast differentiation.
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Affiliation(s)
- Jie Zhou
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yun Hu
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yang Chen
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Lan Yang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yuying Tang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Feng Deng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
| | - Leilei Zheng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
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Liu X, Chen T, Wu Y, Tang Z. Role and mechanism of PTEN in adiponectin-induced osteogenesis in human bone marrow mesenchymal stem cells. Biochem Biophys Res Commun 2016; 483:712-717. [PMID: 27986563 DOI: 10.1016/j.bbrc.2016.12.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 12/10/2016] [Indexed: 12/19/2022]
Abstract
Human bone marrow-derived stromal cells (hBMSC) are multi-potent stem cells that can differentiate into osteogenic and adipogenic lineages. Adiponectin (APN) is an adipocyte-derived hormone that modulates a series of metabolic processes. Recent studies revealed a relationship between APN and bone regeneration, though the underlying mechanism was not fully examined. Phosphatase and tensin homolog deleted on chromosome ten (PTEN) is a tumor suppressor and a therapeutic target for the metabolic syndrome. Its deletion mutants increase osteoblast activity and bone mineral density. Both APN and PTEN are involved in osteogenic differentiation. However, whether PTEN is involved in APN-induced bone metabolism remains unclear. This project was designed to study whether PTEN was involved in APN-mediated osteogenesis of hBMSCs. We found that APN downregulated PTEN expression and that both it and an inhibitor of PTEN (SF1670) increased the expression of osteogenic markers such as osteocalcin, alkaline phosphatase, and runt-related transcription factor-2 in APN-treated hBMSCs. Our results suggested that APN enhanced osteogenic differentiation of hBMSCs in vitro partially by inhibiting PTEN expression. APN could be a therapeutic agent in tissue regeneration engineering and bone regeneration by inhibiting PTEN expression and then promoting the osteogenic differentiation of hBMSCs.
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Affiliation(s)
- Xuhong Liu
- 2nd Dental Center, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China; National Engineering Laboratory for Digital and Material Technology of Stomatology, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China
| | - Tong Chen
- 2nd Dental Center, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China; National Engineering Laboratory for Digital and Material Technology of Stomatology, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China
| | - Yuwei Wu
- 2nd Dental Center, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China; National Engineering Laboratory for Digital and Material Technology of Stomatology, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China.
| | - Zhihui Tang
- 2nd Dental Center, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China; National Engineering Laboratory for Digital and Material Technology of Stomatology, School and Hospital of Stomatology, Peking University, Beijing, 100081, People's Republic of China.
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12
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Burgers TA, Vivanco JF, Zahatnansky J, Moren AJV, Mason JJ, Williams BO. Mice with a heterozygous Lrp6 deletion have impaired fracture healing. Bone Res 2016; 4:16025. [PMID: 27635281 PMCID: PMC5011612 DOI: 10.1038/boneres.2016.25] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 05/17/2016] [Accepted: 06/22/2016] [Indexed: 01/07/2023] Open
Abstract
Bone fracture non-unions, the failure of a fracture to heal, occur in 10%–20% of fractures and are a costly and debilitating clinical problem. The Wnt/β-catenin pathway is critical in bone development and fracture healing. Polymorphisms of linking low-density lipoprotein receptor-related protein 6 (LRP6), a Wnt-binding receptor, have been associated with decreased bone mineral density and fragility fractures, although this remains controversial. Mice with a homozygous deletion of Lrp6 have severe skeletal abnormalities and are not viable, whereas mice with a heterozygous deletion have a combinatory effect with Lrp5 to decrease bone mineral density. As fracture healing closely models embryonic skeletal development, we investigated the process of fracture healing in mice heterozygous for Lrp6 (Lrp6+/−) and hypothesized that the heterozygous deletion of Lrp6 would impair fracture healing. Mid-diaphyseal femur fractures were induced in Lrp6+/− mice and wild-type controls (Lrp6+/+). Fractures were analyzed using micro-computed tomography (μCT) scans, biomechanical testing, and histological analysis. Lrp6+/− mice had significantly decreased stiffness and strength at 28 days post fracture (PF) and significantly decreased BV/TV, total density, immature bone density, and mature area within the callus on day-14 and -21 PF; they had significantly increased empty callus area at days 14 and 21 PF. Our results demonstrate that the heterozygous deletion of Lrp6 impairs fracture healing, which suggests that Lrp6 has a role in fracture healing.
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Affiliation(s)
- Travis A Burgers
- Center for Cancer and Cell Biology, Program for Skeletal Disease and Tumor Microenvironment, Van Andel Research Institute , Grand Rapids, MI, USA
| | - Juan F Vivanco
- Facultad de Ingenieria y Ciencias, Adolfo Ibáñez University , Viña del Mar, Chile
| | - Juraj Zahatnansky
- Center for Cancer and Cell Biology, Program for Skeletal Disease and Tumor Microenvironment, Van Andel Research Institute , Grand Rapids, MI, USA
| | - Andrew J Vander Moren
- Padnos College of Engineering and Computing, Grand Valley State University , Grand Rapids, MI, USA
| | - James J Mason
- Center for Cancer and Cell Biology, Program for Skeletal Disease and Tumor Microenvironment, Van Andel Research Institute , Grand Rapids, MI, USA
| | - Bart O Williams
- Center for Cancer and Cell Biology, Program for Skeletal Disease and Tumor Microenvironment, Van Andel Research Institute , Grand Rapids, MI, USA
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Bigham-Sadegh A, Oryan A. Selection of animal models for pre-clinical strategies in evaluating the fracture healing, bone graft substitutes and bone tissue regeneration and engineering. Connect Tissue Res 2015; 56:175-94. [PMID: 25803622 DOI: 10.3109/03008207.2015.1027341] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In vitro assays can be useful in determining biological mechanism and optimizing scaffold parameters, however translation of the in vitro results to clinics is generally hard. Animal experimentation is a better approximation than in vitro tests, and usage of animal models is often essential in extrapolating the experimental results and translating the information in a human clinical setting. In addition, usage of animal models to study fracture healing is useful to answer questions related to the most effective method to treat humans. There are several factors that should be considered when selecting an animal model. These include availability of the animal, cost, ease of handling and care, size of the animal, acceptability to society, resistance to surgery, infection and disease, biological properties analogous to humans, bone structure and composition, as well as bone modeling and remodeling characteristics. Animal experiments on bone healing have been conducted on small and large animals, including mice, rats, rabbits, dogs, pigs, goats and sheep. This review also describes the molecular events during various steps of fracture healing and explains different means of fracture healing evaluation including biomechanical, histopathological and radiological assessments.
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Affiliation(s)
- Amin Bigham-Sadegh
- Faculty of Veterinary Medicine, Department of Veterinary Surgery and Radiology, Shahrekord University , Shahrekord , Iran and
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