1
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Amin U, Jiang R, Raza SM, Fan M, Liang L, Feng N, Li X, Yang Y, Guo F. Gut-joint axis: Oral Probiotic ameliorates Osteoarthritis. J Tradit Complement Med 2024; 14:26-39. [PMID: 38223812 PMCID: PMC10785157 DOI: 10.1016/j.jtcme.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/10/2023] [Accepted: 06/13/2023] [Indexed: 01/16/2024] Open
Abstract
Osteoarthritis (OA) etiology is multifactorial, and its prevalence is growing globally. The Gut microbiota shapes our immune system and impacts all aspects of health and disease. The idea of utilizing probiotics to treat different conditions prevails. Concerning musculoskeletal illness and health, current data lack the link to understand the interactions between the host and microbiome. We report that S. thermophilus, L. pentosus (as probiotics), and γ-aminobutyric acid (GABA) harbour against osteoarthritis in vivo and alleviate IL-1β induced changes in chondrocytes in vitro. We examined the increased GABA concentration in mice's serum and small intestine content followed by bacterial treatment. The treatment inhibited the catabolism of cartilage and rescued mice joints from degradation. Furthermore, the anabolic markers upregulated and decreased inflammatory markers in mice knee joints and chondrocytes. This study is the first to represent GABA's chondrogenic and chondroprotective effects on joints and human chondrocytes. This data provides a foundation for future studies to elucidate the role of GABA in regulating chondrocyte cell proliferation. These findings opened future horizons to understanding the gut-joint axis and OA treatment. Thus, probiotic/GABA therapy shields OA joints in mice and could at least serve as adjuvant therapy to treat osteoarthritis.
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Affiliation(s)
- Uzma Amin
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
- Department of Microbiology, Government College University, Faisalabad, 38000, Punjab, Pakistan
| | - Rong Jiang
- Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Shahid Masood Raza
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Department of Microbiology, Government College University, Faisalabad, 38000, Punjab, Pakistan
| | - Mengtian Fan
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
| | - Li Liang
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
| | - Naibo Feng
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
| | - Xiaoli Li
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
| | - Yuyou Yang
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
| | - Fengjin Guo
- Laboratory of Developmental Biology, Department of Cell Biology and Genetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
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2
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Takahata Y, Hagino H, Kimura A, Urushizaki M, Kobayashi S, Wakamori K, Fujiwara C, Nakamura E, Yu K, Kiyonari H, Bando K, Murakami T, Komori T, Hata K, Nishimura R. Smoc1 and Smoc2 regulate bone formation as downstream molecules of Runx2. Commun Biol 2021; 4:1199. [PMID: 34667264 PMCID: PMC8526618 DOI: 10.1038/s42003-021-02717-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 09/21/2021] [Indexed: 11/21/2022] Open
Abstract
Runx2 is an essential transcription factor for bone formation. Although osteocalcin, osteopontin, and bone sialoprotein are well-known Runx2-regulated bone-specific genes, the skeletal phenotypes of knockout (KO) mice for these genes are marginal compared with those of Runx2 KO mice. These inconsistencies suggest that unknown Runx2-regulated genes play important roles in bone formation. To address this, we attempted to identify the Runx2 targets by performing RNA-sequencing and found Smoc1 and Smoc2 upregulation by Runx2. Smoc1 or Smoc2 knockdown inhibited osteoblastogenesis. Smoc1 KO mice displayed no fibula formation, while Smoc2 KO mice had mild craniofacial phenotypes. Surprisingly, Smoc1 and Smoc2 double KO (DKO) mice manifested no skull, shortened tibiae, and no fibulae. Endochondral bone formation was also impaired at the late stage in the DKO mice. Collectively, these results suggest that Smoc1 and Smoc2 function as novel targets for Runx2, and play important roles in intramembranous and endochondral bone formation. Takahata et al. investigate the functional role of SMOC1/2 proteins in skeletal development. They reveal a genetic pathway that includes Bmp2 and Runx2 inducing expression of the paralogous Smoc genes, which may offer novel and effective therapeutic strategies associated with various bone and cartilage diseases.
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Affiliation(s)
- Yoshifumi Takahata
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan.
| | - Hiromasa Hagino
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Ayaka Kimura
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Mitsuki Urushizaki
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Sachi Kobayashi
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Kanta Wakamori
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Chika Fujiwara
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Eriko Nakamura
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Kayon Yu
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan
| | - Kana Bando
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan
| | - Tomohiko Murakami
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Toshihisa Komori
- Basic and Translational Research Center for Hard Tissue Disease, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kenji Hata
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Riko Nishimura
- Department of Molecular and Cellular Biochemistry, Osaka University Graduate School of Dentistry, Osaka, Japan
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3
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Bao J, Qian Z, Liu L, Hong X, Che H, Wu X. Pharmacological Disruption of Phosphorylated Eukaryotic Initiation Factor-2α/Activating Transcription Factor 4/Indian Hedgehog Protects Intervertebral Disc Degeneration via Reducing the Reactive Oxygen Species and Apoptosis of Nucleus Pulposus Cells. Front Cell Dev Biol 2021; 9:675486. [PMID: 34164397 PMCID: PMC8215438 DOI: 10.3389/fcell.2021.675486] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/20/2021] [Indexed: 12/29/2022] Open
Abstract
Excessive reactive oxygen species (ROS) and apoptosis in nucleus pulposus (NP) cells accelerate the process of intervertebral disc degeneration (IDD). Here, we integrated pathological samples and in vitro and in vivo framework to investigate the impact of phosphorylation of eukaryotic initiation factor-2α (eIF2α)/activating transcription factor 4 (ATF4)/Indian hedgehog (Ihh) signaling in the IDD. From the specimen analysis of the IDD patients, we found phosphorylated eIF2α (p-eIF2α), ATF4 and Ihh protein levels were positively related while the NP tissue went degenerative. In vitro, tumor necrosis factor (TNF)-α caused the NP cell degeneration and induced a cascade of upregulation of p-eIF2α, ATF4, and Ihh. Interestingly, ATF4 could enhance Ihh expression through binding its promoter region, and silencing of ATF4 decreased Ihh and protected the NP cells from degeneration. Moreover, ISRIB inhibited the p-eIF2α, which resulted in a suppression of ATF4/Ihh, and alleviated the TNF-α-induced ROS production and apoptosis of NP cells. On the contrary, further activating p-eIF2α aggravated the NP cell degeneration, with amplification of ATF4/Ihh and a higher level of ROS and apoptosis. Additionally, applying cyclopamine (CPE) to suppress Ihh was efficient to prevent NP cell apoptosis but did not decrease the ROS level. In an instability-induced IDD model in mice, ISRIB suppressed p-eIF2α/ATF4/Ihh and prevented IDD via protecting the anti-oxidative enzymes and decreased the NP cell apoptosis. CPE prevented NP cell apoptosis but did not affect anti-oxidative enzyme expression. Taken together, p-eIF2α/ATF4/Ihh signaling involves the ROS level and apoptosis in NP cells, the pharmacological disruption of which may provide promising methods in preventing IDD.
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Affiliation(s)
- Junping Bao
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Zhanyang Qian
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Lei Liu
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Xin Hong
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Hui Che
- Faculty of Medicine, Medical Center, Albert-Ludwigs-University of Freiburg, Freiburg im Breisgau, Germany
| | - Xiaotao Wu
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
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4
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Iezaki T, Fukasawa K, Horie T, Park G, Robinson S, Nakaya M, Fujita H, Onishi Y, Ozaki K, Kanayama T, Hiraiwa M, Kitaguchi Y, Kaneda K, Yoneda Y, Takarada T, Guo XE, Kurose H, Hinoi E. The MAPK Erk5 is necessary for proper skeletogenesis involving a Smurf-Smad-Sox9 molecular axis. Development 2018; 145:dev.164004. [PMID: 29986870 DOI: 10.1242/dev.164004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/20/2018] [Indexed: 12/25/2022]
Abstract
Erk5 belongs to the mitogen-activated protein kinase (MAPK) family. Following its phosphorylation by Mek5, Erk5 modulates several signaling pathways in a number of cell types. In this study, we demonstrated that Erk5 inactivation in mesenchymal cells causes abnormalities in skeletal development by inducing Sox9, an important transcription factor of skeletogenesis. We further demonstrate that Erk5 directly phosphorylates and activates Smurf2 (a ubiquitin E3 ligase) at Thr249, which promotes the proteasomal degradation of Smad proteins and phosphorylates Smad1 at Ser206 in the linker region known to trigger its proteasomal degradation by Smurf1. Smads transcriptionally activated the expression of Sox9 in mesenchymal cells. Accordingly, removal of one Sox9 allele in mesenchymal cells from Erk5-deficient mice rescued some abnormalities of skeletogenesis. These findings highlight the importance of the Mek5-Erk5-Smurf-Smad-Sox9 axis in mammalian skeletogenesis.
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Affiliation(s)
- Takashi Iezaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan.,Venture Business Laboratory, Organization of Frontier Science and Innovation, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Kazuya Fukasawa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Tetsuhiro Horie
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Gyujin Park
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Samuel Robinson
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Michio Nakaya
- Department of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiroyuki Fujita
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Yuki Onishi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Kakeru Ozaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Takashi Kanayama
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Manami Hiraiwa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Yuka Kitaguchi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Katsuyuki Kaneda
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Yukio Yoneda
- Section of Prophylactic Pharmacology, Venture Business Laboratory, Organization of Frontier Science and Innovation, Kanazawa University Kanazawa, Ishikawa 920-1192, Japan
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - Hitoshi Kurose
- Department of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Eiichi Hinoi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
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5
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Chen YC, Wu KC, Huang BM, So EC, Wang YK. Midazolam inhibits chondrogenesis via peripheral benzodiazepine receptor in human mesenchymal stem cells. J Cell Mol Med 2018. [PMID: 29516686 PMCID: PMC5908119 DOI: 10.1111/jcmm.13584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Midazolam, a benzodiazepine derivative, is widely used for sedation and surgery. However, previous studies have demonstrated that Midazolam is associated with increased risks of congenital malformations, such as dwarfism, when used during early pregnancy. Recent studies have also demonstrated that Midazolam suppresses osteogenesis of mesenchymal stem cells (MSCs). Given that hypertrophic chondrocytes can differentiate into osteoblast and osteocytes and contribute to endochondral bone formation, the effect of Midazolam on chondrogenesis remains unclear. In this study, we applied a human MSC line, the KP cell, to serve as an in vitro model to study the effect of Midazolam on chondrogenesis. We first successfully established an in vitro chondrogenic model in a micromass culture or a 2D high‐density culture performed with TGF‐β‐driven chondrogenic induction medium. Treatment of the Midazolam dose‐dependently inhibited chondrogenesis, examined using Alcian blue‐stained glycosaminoglycans and the expression of chondrogenic markers, such as SOX9 and type II collagen. Inhibition of Midazolam by peripheral benzodiazepine receptor (PBR) antagonist PK11195 or small interfering RNA rescued the inhibitory effects of Midazolam on chondrogenesis. In addition, Midazolam suppressed transforming growth factor‐β‐induced Smad3 phosphorylation, and this inhibitory effect could be rescued using PBR antagonist PK11195. This study provides a possible explanation for Midazolam‐induced congenital malformations of the musculoskeletal system through PBR.
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Affiliation(s)
- Yung-Ching Chen
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - King-Chuen Wu
- Department of Nursing, Chang Gung University of Science and Technology, Chia-Yi County, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Chiayi County, Taiwan
| | - Bu-Miin Huang
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Edmund Cheung So
- Department of Anesthesiology, An-Nan Hospital, China Medical University, Tainan, Taiwan.,Department of Medicine, China Medical University, Taichung, Taiwan
| | - Yang-Kao Wang
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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6
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Sarty KI, Cowie A, Martyniuk CJ. The legacy pesticide dieldrin acts as a teratogen and alters the expression of dopamine transporter and dopamine receptor 2a in zebrafish (Danio rerio) embryos. Comp Biochem Physiol C Toxicol Pharmacol 2017; 194:37-47. [PMID: 28163252 DOI: 10.1016/j.cbpc.2017.01.010] [Citation(s) in RCA: 9] [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: 10/01/2016] [Revised: 01/31/2017] [Accepted: 01/31/2017] [Indexed: 11/23/2022]
Abstract
Dieldrin (DLD) is a lipophilic pesticide that shows environmental persistence. The objectives were to determine the effects of DLD on GABAergic and dopaminergic systems in developing zebrafish. Both chorionated and dechorionated embryos (~24h post-hatch) were exposed to a single concentration of DLD (0.347-3470μM) for 48h. Following exposure, a subset of larvae was placed into clean water for 6days (i.e. depuration phase). Chorionated embryos showed <15% mortality while dechorionated embryos showed higher mortality (>30%), suggesting that the chorion protected the embryos. Over a 6day depuration phase, there was a dose dependent effect observed in both the "dechorionated and chorionated embryo" treatments for larval mortality (>60%). At the end of depuration, there was no detectable change in neuro-morphological endpoints that included the ratio of notochord length to body length (%) and the ratio of head area to body area (%). However, DLD did induce cardiac edema, skeletal deformities, and tremors. GABA-related transcripts were not affected in abundance by DLD. Conversely, the relative mRNA levels of dopamine transporter (dat1) and dopamine receptor drd2a mRNA were decreased in dechorionated, but not chorionated, embryos. These data suggest that DLD can alter the expression of transcripts related to dopaminergic signaling. Lastly, GABAA receptor subunits gabrB1 and gabrB2, as well as dopamine receptors drd1 and drd2a, were inherently higher in abundance in dechorionated embryos compared to chorionated embryos. This is an important consideration when incorporating transcriptomics into embryo testing as expression levels can change with removal of the chorion prior to exposure.
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MESH Headings
- Animals
- Behavior, Animal/drug effects
- Chorion/physiology
- Dieldrin/toxicity
- Dopamine Plasma Membrane Transport Proteins/genetics
- Dopamine Plasma Membrane Transport Proteins/metabolism
- Embryo, Nonmammalian/drug effects
- Embryo, Nonmammalian/metabolism
- Embryonic Development/drug effects
- Gene Expression Regulation, Developmental/drug effects
- Insecticides/toxicity
- Larva/drug effects
- Larva/growth & development
- Larva/metabolism
- Osmolar Concentration
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- Protein Subunits/genetics
- Protein Subunits/metabolism
- RNA, Messenger/metabolism
- Receptors, Dopamine D1/genetics
- Receptors, Dopamine D1/metabolism
- Receptors, Dopamine D2/genetics
- Receptors, Dopamine D2/metabolism
- Receptors, GABA-A/genetics
- Receptors, GABA-A/metabolism
- Survival Analysis
- Teratogens/toxicity
- Zebrafish/embryology
- Zebrafish/growth & development
- Zebrafish/physiology
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
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Affiliation(s)
- Kathleena I Sarty
- Canadian Rivers Institute and Department of Biology, University of New Brunswick, Saint John, New Brunswick, E2L 4L5, Canada
| | - Andrew Cowie
- Canadian Rivers Institute and Department of Biology, University of New Brunswick, Saint John, New Brunswick, E2L 4L5, Canada
| | - Christopher J Martyniuk
- Canadian Rivers Institute and Department of Biology, University of New Brunswick, Saint John, New Brunswick, E2L 4L5, Canada.
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7
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ATF3 controls proliferation of osteoclast precursor and bone remodeling. Sci Rep 2016; 6:30918. [PMID: 27480204 PMCID: PMC4969588 DOI: 10.1038/srep30918] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 07/11/2016] [Indexed: 12/21/2022] Open
Abstract
Bone homeostasis is maintained by the sophisticated coupled actions of bone-resorbing osteoclasts and bone-forming osteoblasts. Here we identify activating transcription factor 3 (ATF3) as a pivotal transcription factor for the regulation of bone resorption and bone remodeling under a pathological condition through modulating the proliferation of osteoclast precursors. The osteoclast precursor-specific deletion of ATF3 in mice led to the prevention of receptor activator of nuclear factor-κB (RANK) ligand (RANKL)-induced bone resorption and bone loss, although neither bone volume nor osteoclastic parameter were markedly altered in these knockout mice under the physiological condition. RANKL-dependent osteoclastogenesis was impaired in vitro in ATF3-deleted bone marrow macrophages (BMM). Mechanistically, the deficiency of ATF3 impaired the RANKL-induced transient increase in cell proliferation of osteoclast precursors in bone marrow in vivo as well as of BMM in vitro. Moreover, ATF3 regulated cyclin D1 mRNA expression though modulating activator protein-1-dependent transcription in the osteoclast precursor, and the introduction of cyclin D1 significantly rescued the impairment of osteoclastogenesis in ATF3-deleted BMM. Therefore, these findings suggest that ATF3 could have a pivotal role in osteoclastogenesis and bone homeostasis though modulating cell proliferation under pathological conditions, thereby providing a target for bone diseases.
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Iezaki T, Ozaki K, Fukasawa K, Inoue M, Kitajima S, Muneta T, Takeda S, Fujita H, Onishi Y, Horie T, Yoneda Y, Takarada T, Hinoi E. ATF3 deficiency in chondrocytes alleviates osteoarthritis development. J Pathol 2016; 239:426-37. [DOI: 10.1002/path.4739] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 04/16/2016] [Accepted: 04/21/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Takashi Iezaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Kakeru Ozaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Kazuya Fukasawa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Makoto Inoue
- Department of Biochemical Genetics; Medical Research Institute, Tokyo Medical and Dental University; Tokyo Japan
| | - Shigetaka Kitajima
- Department of Biochemical Genetics; Medical Research Institute, Tokyo Medical and Dental University; Tokyo Japan
| | - Takeshi Muneta
- Department of Joint Surgery and Sports Medicine; Graduate School of Medicine Tokyo Medical and Dental University; Tokyo Japan
| | - Shu Takeda
- Department of Physiology and Cell Biology; Tokyo Medical and Dental University Graduate School and Faculty of Medicine; Tokyo Japan
| | - Hiroyuki Fujita
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Yuki Onishi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Tetsuhiro Horie
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Yukio Yoneda
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Takeshi Takarada
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
| | - Eiichi Hinoi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences; Kanazawa University Graduate School of Medical, Pharmaceutical and Health Sciences; Kanazawa Ishikawa Japan
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9
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Zeng H, Zhang JM, Du Y, Wang J, Ren Y, Li M, Li H, Cai Z, Chu Q, Yang C. Crosstalk between ATF4 and MTA1/HDAC1 promotes osteosarcoma progression. Oncotarget 2016; 7:7329-42. [PMID: 26797758 PMCID: PMC4872789 DOI: 10.18632/oncotarget.6940] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 01/01/2016] [Indexed: 02/01/2023] Open
Abstract
The stress response gene activating transcription factor 4 (ATF4) is involved in metastatic behavior and cellular protection. Here we show that ATF4 is upregulated in osteosarcoma (OS) cell lines and patient clinical samples as compared to matched non-tumor tissue. Overexpression of ATF4 in OS cells promoted cell proliferation, migration and lung metastasis. Furthermore, the expression of ATF4 was markedly reduced in metastasis associated protein (MTA1) or histone deacetylase 1 (HDAC1) knockdown OS cells, but MTA1 overexpression increased the stability and activity of ATF4 protein via ATF4 deacetylation by HDAC1. ATF4 in turn enhanced the expression of MTA1 and HDAC1 at the transcription level, suggesting a positive feedback loop between ATF4 and MTA1/HDAC1. Clinically, the level of ATF4 was positively correlated with that of MTA1 in OS. Mice injected with ATF4-overexpressing cells exhibited a higher rate of tumor growth, and the average weight of these tumors was ~90% greater than the controls. Taken together, these data establish a direct correlation between ATF4-induced OS progression and MTA1/HDAC1-associated metastasis, and support the potential therapeutic value of targeting ATF4 in the treatment of OS.
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Affiliation(s)
- Heng Zeng
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Jin-ming Zhang
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Yu Du
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Jiang Wang
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Ye Ren
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Mi Li
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Hao Li
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Zhuo Cai
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Qian Chu
- Department of Oncology, Tongji Hospital of Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Caihong Yang
- Department of Orthopedics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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Takarada T, Nakazato R, Tsuchikane A, Fujikawa K, Iezaki T, Yoneda Y, Hinoi E. Genetic analysis of Runx2 function during intramembranous ossification. Development 2015; 143:211-8. [PMID: 26657773 DOI: 10.1242/dev.128793] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/28/2015] [Indexed: 01/07/2023]
Abstract
Runt-related transcription factor 2 (Runx2) is an essential transcriptional regulator of osteoblast differentiation and its haploinsufficiency leads to cleidocranial dysplasia because of a defect in osteoblast differentiation during bone formation through intramembranous ossification. The cellular origin and essential period for Runx2 function during osteoblast differentiation in intramembranous ossification remain poorly understood. Paired related homeobox 1 (Prx1) is expressed in craniofacial mesenchyme, and Runx2 deficiency in cells of the Prx1 lineage (in mice referred to here as Runx2prx1 (-/-)) resulted in defective intramembranous ossification. Runx2 was heterogeneously expressed in Prx1-GFP(+) cells located at the intrasutural mesenchyme in the calvaria of transgenic mice expressing GFP under the control of the Prx1 promoter. Double-positive cells for Prx1-GFP and stem cell antigen-1 (Sca1) (Prx1(+)Sca1(+) cells) in the calvaria expressed Runx2 at lower levels and were more homogeneous and primitive than Prx1(+)Sca1(-) cells. Osterix (Osx) is another transcriptional determinant of osteoblast lineages expressed by osteoblast precursors; Osx is highly expressed by Prx1(-)Runx2(+) cells at the osteogenic front and on the surface of mineralized bone in the calvaria. Runx2 deficiency in cells of the Osx lineage (in mice referred to here as Runx2osx (-/-)) resulted in severe defects in intramembranous ossification. These findings indicate that the essential period of Runx2 function in intramembranous ossification begins at the Prx1(+)Sca1(+) mesenchymal stem cell stage and ends at the Osx(+)Prx1(-)Sca1(-) osteoblast precursor stage.
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Affiliation(s)
- Takeshi Takarada
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Ryota Nakazato
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Azusa Tsuchikane
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Koichi Fujikawa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Takashi Iezaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Yukio Yoneda
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
| | - Eiichi Hinoi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kanazawa, Ishikawa 920-1192, Japan
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Yoneda Y. [Universality of amino acid signaling between diverse plasma cells]. YAKUGAKU ZASSHI 2014; 134:879-87. [PMID: 25088319 DOI: 10.1248/yakushi.14-00152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Both glutamic (Glu) and gamma-aminobutyric (GABA) acids are believed to play roles as neurotransmitters released from particular neurons into synaptic clefts in the mammalian central nervous system. Although GABA has been shown to act as an extracellular signal outside the brain, little attention has been paid to the possible expression of machineries required for neuronal glutamatergic signaling in cells other than central neurons. We first demonstrated the presence of Glu receptors in peripheral tissues such as the adrenal and pituitary glands three decades ago. In this review, I will outline our experimental findings accumulated since then on the physiological and pathological significance of neuronal amino acids as an extracellular signal for the maintenance of homeostasis in a variety of plasma cells. For example, Glu is released upon stimulation in a Ca2+-dependent manner for signal output in osteoblasts, where Glu is essential for the expression of the master regulator of osteoblastogenesis through a particular inotropic receptor subtype. In contrast, GABA plays a role in mechanisms underlying the suppression of cellular differentiation and maturation through a particular metabotropic receptor subtype in osteoblasts. Taken together, osteoblastic maturation proceeds as a delicate balancing between excitatory glutamatergic and inhibitory GABAergic signals, as seen in the brain. Re-evaluation of drugs currently used could be beneficial for the efficient discovery and development of innovative drugs useful for the prophylaxis and/or therapy of a variety of diseases relevant to the disturbance of glutamatergic and GABAergic signaling in diverse plasma cells.
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Affiliation(s)
- Yukio Yoneda
- Laboratory of Molecular Pharmacology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University
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Abstract
In this review, we would outline the possible signaling system for three types of amino acids including glutamate (Glu), γ-aminobutyric acid (GABA) and D-serine (D-Ser) to play a role as an extracellular signal mediator in mechanisms underlying maintenance of the cellular homeostasis in skeletal tissues. Although Glu and GABA has been thought to be an excitatory/inhibitory amino acid neurotransmitter in the mammalian central nervous system, our molecular biological analyses give rise to a novel function for Glu and GABA as an autocrine and/or paracrine factor in three types of distinct cell types including osteoblasts, osteoclasts and chondrocytes in bone tissues. Moreover, D-Ser plays a pivotal role in osteoclastogenesis through a mechanism related to the incorporation of serine enantiomers in osteoclasts after the synthesis and subsequent release from adjacent osteoblasts. Accordingly, bone formation and maintenance seems to be under control by amino acid signaling in skeletal tissues as seen with neurotransmission in the brain.
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Affiliation(s)
- Takeshi Takarada
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School of Natural Science and Technology, Kakuma-machi, Kanazawa 920-1192, Japan.
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Zhang C, Bai N, Chang A, Zhang Z, Yin J, Shen W, Tian Y, Xiang R, Liu C. ATF4 is directly recruited by TLR4 signaling and positively regulates TLR4-trigged cytokine production in human monocytes. Cell Mol Immunol 2012; 10:84-94. [PMID: 23241898 DOI: 10.1038/cmi.2012.57] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Toll-like receptors (TLRs) are sentinels of the host defense system, which recognize a large number of microbial pathogens. The host defense system may be inefficient or inflammatory diseases may develop if microbial recognition by TLRs and subsequent TLR-triggered cytokine production are deregulated. Activating transcription factor 4 (ATF4), a member of the ATF/CREB transcription factor family, is an important factor that participates in several pathophysiological processes. In this report, we found that ATF4 is also involved in the TLR-mediated innate immune response, which participates in TLR4 signal transduction and mediates the secretion of a variety of cytokines. We observed that ATF4 is activated and translocates to the nucleus following lipopolysaccharide (LPS) stimulation via the TLR4-MyD88-dependent pathway. Additionally, a cytokine array assay showed that some key inflammatory cytokines, such as IL-6, IL-8 and RANTES, are positively regulated by ATF4. We also demonstrate that c-Jun directly binds to ATF4, thereby promoting the secretion of inflammatory cytokines. Taken together, these results indicate that ATF4 acts as a positive regulator in TLR4-triggered cytokine production.
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Affiliation(s)
- Chunyan Zhang
- Department of Immunology, Nankai University School of Medicine, Tianjin, China
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