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Sugawara D, Sakai N, Sato Y, Azetsu Y, Karakawa A, Chatani M, Mizuno M, Maruoka Y, Myers M, Fukuhara K, Takami M. Planar catechin increases bone mass by regulating differentiation of osteoclasts in mice. J Oral Biosci 2024; 66:196-204. [PMID: 38295903 DOI: 10.1016/j.job.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVES While catechins have been reported to exhibit potential to benefit osteoporosis patients, the effects of planar catechin (PCat), synthesized during the development of drugs for Alzheimer's disease, have not been clearly elucidated. Here, we examined the effects of PCat on mouse bone metabolism both in vivo and in vitro. METHODS Six week old female mice were orally administered PCat (30 mg/kg) every other day for four weeks, and their femurs were analyzed using micro-computed tomography imaging. Osteoclasts and osteoblasts were collected from mice and cultured with PCat. Subsequently, osteoclast formation and differentiation and osteoblast differentiation were observed. RESULTS Mice orally administered PCat displayed significantly increased femur bone mass compared to the control group. Quantitative polymerase chain reaction findings indicated that PCat addition to osteoclast progenitor cultures suppressed osteoclast formation and decreased osteoclast marker expression without affecting the proliferative potential of the osteoclast progenitor cells. Addition of PCat to osteoblast cultures increased osteoblast marker expression. CONCLUSIONS PCat inhibits osteoclast differentiation and promotes osteoblast differentiation, resulting in increased bone mass in mice. These results suggest that PCat administration is a promising treatment option for conditions associated with bone loss, including osteoporosis.
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Affiliation(s)
- Daiki Sugawara
- Department of Medical and Dental Cooperative Dentistry, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan; Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Dental Education, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
| | - Yurie Sato
- Division of Dentistry for Persons with Disabilities, Department of Perioperative Medicine, Showa University, School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Mirei Mizuno
- Department of Organic and Bioorganic Chemistry, Graduate School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yasubumi Maruoka
- Department of Dental Surgery, Totsuka Kyoritsu Second Hospital, 579-1 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0817, Japan
| | - Mie Myers
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Kiyoshi Fukuhara
- Department of Organic and Bioorganic Chemistry, Graduate School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masamichi Takami
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
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Otake K, Azetsu Y, Chatani M, Karakawa A, Nishida S, Hirayama A, Kobayashi R, Sakai N, Suzuki N, Takami M. Abnormal bone regeneration induced by FK506 in medaka fin revealed by in vivo imaging. J Oral Biosci 2024:S1349-0079(24)00020-3. [PMID: 38423180 DOI: 10.1016/j.job.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/20/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVES Bone tissue in bony fish demonstrates a remarkable ability to regenerate, particularly evident following induction of extensive bone defects, such as fin amputation. This regenerative capacity has been reported to be promoted by the immunosuppressant FK506, yet its precise effects on bone cells during fin regeneration remains insufficiently elucidated. This study aims to investigate the effects of FK506 treatment on bone morphology, osteoblasts, and osteoclasts in the bony fin rays of osterix promoter-DsRed/TRAP promoter-EGFP double transgenic (Tg) medaka. METHODS The caudal fin of double Tg medaka was amputated, followed by a 20-day treatment with FK506 (1.0 μg/ml) to observe its effects on fin regeneration. Additionally, the regenerated caudal fin area underwent evaluation using genetic analysis and cell proliferation assays. RESULTS FK506 treatment significantly increased osterix-positive osteoblast formation, resulting in both a significantly longer fin length and fewer joints in the bony fin rays formed during fin regeneration. Notably, TRAP-positive osteoclast formation and bone resorption were observed to occur primarily during the latter stages of fin regeneration. Furthermore, while the expression levels of osteoblast-related genes in the regenerated area remained unchanged following FK506 treatment, a heightened cell proliferation was observed at the tip of the fin. CONCLUSIONS Our findings suggest that treatment with FK506 promotes bone regeneration by increasing the number of osteoblasts in the amputated area of the fin. However, long-term treatment disrupts regular bone metabolism by inducing abnormal osteoclast formation.
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Affiliation(s)
- Kai Otake
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Department of Endodontology, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145- 8515, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Satoko Nishida
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Department of Medical and Dental Cooperative Dentistry, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Aiko Hirayama
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Rina Kobayashi
- Division of Toxicology, Department of Pharmacology, Toxicology and Therapeutics, Showa University School of Pharmacy, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Dental Education, Showa University Graduate School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Noriyuki Suzuki
- Department of Endodontology, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145- 8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
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Nishida S, Azetsu Y, Chatani M, Karakawa A, Otake K, Sugiki H, Sakai N, Maruoka Y, Myers M, Takami M. Tacrolimus, FK506, promotes bone formation in bone defect mouse model. J Oral Biosci 2024:S1349-0079(24)00016-1. [PMID: 38360372 DOI: 10.1016/j.job.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/17/2024]
Abstract
OBJECTIVES Some studies have reported that tacrolimus (FK506), an immunosuppressant, may have positive effects on bone formation. However, the precise effects of FK506 on bone repair or osteoblasts remain inadequately elucidated, and limited research has explored the outcomes of its use in an in vivo mouse model. This study aims to examine the effects of FK506 on bone repair and osteoblast functions using bone defect and BMP-2-induced ectopic ossification mouse models, as well as cultured primary mouse osteoblasts treated with FK506. METHODS We established mouse models of femur bone defect and BMP-2-induced ectopic ossification to evaluate the effect of FK506 on new bone formation, respectively. Additionally, primary mouse osteoblasts were cultured with FK506 and examined for gene expressions related to osteoblast differentiation. RESULTS While FK506 promoted the repair of bone defect areas in the femur of the bone defect mouse model, it also led to widespread abnormal bone formation outside the intended area. Additionally, following the implantation of a collagen sponge containing BMP-2 into mouse muscle tissue, FK506 was found to promote ectopic ossification and enhance BMP-2-induced osteoblast differentiation in vitro. Our findings also revealed that FK506 increased the number of immature osteoblasts in the absence of BMP-2 without affecting osteoblast differentiation. Furthermore, direct effects were observed, reducing the ability of osteoblasts to support osteoclastogenesis. CONCLUSIONS These results indicate that FK506 increases new bone formation during bone repair and influences the proliferation of immature osteoblasts, as well as osteoblast-supported osteoclastogenesis.
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Affiliation(s)
- Satoko Nishida
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Department of Medical and Dental Cooperative Dentistry, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Kai Otake
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Department of Endodontology, Graduate School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Hidemitsu Sugiki
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Dental Education, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yasubumi Maruoka
- Totsuka Kyoritsu Daini Hospital, 579-1 Totsuka, Yokohama, Kanagawa, 244-0817, Japan
| | - Mie Myers
- Department of Medical and Dental Cooperative Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Graduate School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
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Zhou Y, Nishiura A, Morikuni H, Deng W, Tsujibayashi T, Momota Y, Azetsu Y, Takami M, Honda Y, Matsumoto N. RANKL + senescent cells under mechanical stress: a therapeutic target for orthodontic root resorption using senolytics. Int J Oral Sci 2023; 15:20. [PMID: 37253719 DOI: 10.1038/s41368-023-00228-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 04/29/2023] [Accepted: 05/04/2023] [Indexed: 06/01/2023] Open
Abstract
In dentistry, orthodontic root resorption is a long-lasting issue with no effective treatment strategy, and its mechanisms, especially those related to senescent cells, remain largely unknown. Here, we used an orthodontic intrusion tooth movement model with an L-loop in rats to demonstrate that mechanical stress-induced senescent cells aggravate apical root resorption, which was prevented by administering senolytics (a dasatinib and quercetin cocktail). Our results indicated that cementoblasts and periodontal ligament cells underwent cellular senescence (p21+ or p16+) and strongly expressed receptor activator of nuclear factor-kappa B (RANKL) from day three, subsequently inducing tartrate-resistant acid phosphatase (TRAP)-positive odontoclasts and provoking apical root resorption. More p21+ senescent cells expressed RANKL than p16+ senescent cells. We observed only minor changes in the number of RANKL+ non-senescent cells, whereas RANKL+ senescent cells markedly increased from day seven. Intriguingly, we also found cathepsin K+p21+p16+ cells in the root resorption fossa, suggesting senescent odontoclasts. Oral administration of dasatinib and quercetin markedly reduced these senescent cells and TRAP+ cells, eventually alleviating root resorption. Altogether, these results unveil those aberrant stimuli in orthodontic intrusive tooth movement induced RANKL+ early senescent cells, which have a pivotal role in odontoclastogenesis and subsequent root resorption. These findings offer a new therapeutic target to prevent root resorption during orthodontic tooth movement.
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Affiliation(s)
- Yue Zhou
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
| | - Aki Nishiura
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan.
| | - Hidetoshi Morikuni
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
| | - Wenqi Deng
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
| | - Toru Tsujibayashi
- Department of Physics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
| | - Yoshihiro Momota
- Department of Anesthesiology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawaku, Tokyo, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawaku, Tokyo, Japan
| | - Yoshitomo Honda
- Department of Oral Anatomy, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan.
| | - Naoyuki Matsumoto
- Department of Orthodontics, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka, Japan
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Yamaguchi M, Takami M, Azetsu Y, Karakawa A, Chatani M, Funatsu T, Sakai N. Effects of anti-RANKL antibodies administered to pregnant mice on bone and tooth development in neonates. J Oral Biosci 2023; 65:186-194. [PMID: 36907379 DOI: 10.1016/j.job.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 03/14/2023]
Abstract
OBJECTIVES This study examined how the anti-bone resorptive agent denosumab, which comprises anti-receptor activator of nuclear factor kappa B ligand (anti-RANKL) monoclonal antibodies, administered during pregnancy affected neonatal development. Anti-RANKL antibodies, which are known to bind to mouse RANKL and inhibit osteoclast formation, were administered to pregnant mice. Following this, the survival, growth, bone mineralization, and tooth development of their neonates were analyzed. METHODS Anti-RANKL antibodies (5 mg/kg) were injected into pregnant mice on day 17 of gestation. After parturition, their neonatal offspring underwent microcomputed tomography at 24 h and at 2, 4, and 6 weeks after birth. Three-dimensional bone and teeth images were subjected to histological analysis. RESULTS Approximately 70% of the neonatal mice born to mice who received anti-RANKL antibodies died within 6 weeks after birth. These mice had a significantly lower body weight and significantly higher bone mass compared with the control group. Furthermore, delayed tooth eruption and abnormal tooth morphology (eruption length, enamel surface, and cusps) were observed. Conversely, while the tooth germ shape and mothers against decapentaplegic homolog 1/5/8 expression remained unchanged at 24 h after birth in the neonatal mice born to mice that received anti-RANKL antibodies, osteoclasts were not formed. CONCLUSIONS These results suggest that anti-RANKL antibodies administered to mice in the late stage of pregnancy results in adverse events in their neonatal offspring. Thus, it is speculated that administering denosumab to pregnant humans will affect fetal development and growth after birth.
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Affiliation(s)
- Maho Yamaguchi
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan; Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Takahiro Funatsu
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan; Department of Dental Education, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
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Emralino FL, Satoh S, Sakai N, Takami M, Takeuchi F, Yan N, Rutsch F, Fujita T, Kato H. Double-Stranded RNA Induces Mortality in an MDA5-Mediated Type I Interferonopathy Model. J Immunol 2022; 209:2093-2103. [PMID: 36426976 DOI: 10.4049/jimmunol.2200367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/22/2022] [Indexed: 01/04/2023]
Abstract
Gain-of-function mutations in the viral dsRNA sensor melanoma differentiation-associated protein 5 (MDA5) lead to autoimmune IFNopathies, including Singleton-Merten syndrome (SMS) and Aicardi-Goutières syndrome. However, much remains unclear regarding the mechanism of disease progression and how external factors such as infection or immune stimulation with vaccination can affect the immune response. With this aim, we generated mice with human MDA5 bearing the SMS-associated mutation R822Q (hM-R822Q). hM-R822Q transgenic (Tg) mice developed SMS-like heart fibrosis, aortic valve enlargement, and aortic calcification with a systemic IFN-stimulated gene signature resulting in the activation of the adaptive immune response. Although administration of the viral dsRNA mimic polyinosinic-polycytidylic acid [poly(I:C)] did not have remarkable effects on the cardiac phenotype, dramatic inflammation was observed in the intestines where IFN production was most elevated. Poly(I:C)-injected hM-R822Q Tg mice also developed lethal hypercytokinemia marked by massive IL-6 levels in the serum. Interrupting the IFN signaling through mitochondrial antiviral signaling protein or IFN-α/β receptor alleviated hM-R822Q-induced inflammation. Furthermore, inhibition of JAK signaling with tofacitinib reduced cytokine production and ameliorated mucosal damage, enabling the survival of poly(I:C)-injected hM-R822Q Tg mice. These findings demonstrate that the MDA5 R822Q mutant introduces a critical risk factor for uncontrollable inflammation on viral infection or vaccination.
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Affiliation(s)
- Francine Lianne Emralino
- Laboratory of Molecular and Cellular Immunology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan.,Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, Japan
| | - Saya Satoh
- Institute of Cardiovascular Immunology, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, Japan
| | - Fumihiko Takeuchi
- Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, Japan
| | - Nan Yan
- Department of Immunology, University of Texas Southwestern, Medical Center, Dallas, TX.,Department of Microbiology, University of Texas Southwestern, Medical Center, Dallas, TX; and
| | - Frank Rutsch
- Department of General Pediatrics, Muenster University Children's Hospital, Albert-Schweitzer Campus 1, Muenster, Germany
| | - Takashi Fujita
- Laboratory of Molecular and Cellular Immunology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan.,Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, Japan.,Institute of Cardiovascular Immunology, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Hiroki Kato
- Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, Japan.,Institute of Cardiovascular Immunology, University Hospital Bonn, University of Bonn, Bonn, Germany
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Ikeda M, Karakawa A, Takizawa H, Azetsu Y, Sakai N, Chatani M, Suzuki N, Takami M. Effects of Anti-RANKL Antibody and Zoledronic Acid on Periapical Lesion Development in Mice. J Endod 2022; 48:632-640. [PMID: 35181456 DOI: 10.1016/j.joen.2022.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Anti-resorptive drugs are widely used to treat osteoporosis and other systemic bone diseases, though their efficacy for local bone resorption following localized inflammation has not been fully elucidated. We examined the effects of an anti-receptor activator of nuclear factor-κB ligand (RANKL) antibody and the bisphosphonate zoledronic acid (ZOL) on periapical lesion (PL) development in mice. METHODS Dental pulps of lower first molars in mice were removed, with the exposed dental pulp chambers left open to the oral environment to induce apical periodontitis. An anti-RANKL antibody or ZOL was intraperitoneally injected once per week until postoperative day 21, then micro-computed tomography and histological analyses were performed. RESULTS PL enlargement was inhibited by both the anti-RANKL antibody and ZOL in a dose-dependent manner and reduction of inflammatory cell infiltration in apical tissues inhibited periapical bone resorption. The anti-RANKL antibody decreased the number of osteoclasts in periapical tissues, while ZOL suppressed periapical bone resorption with osteoclast numbers maintained. While administration of each of the anti-resorptive drugs increased femoral bone mass, femoral bone mineral density in the PL group was lower as compared to the sham-operated group. CONCLUSIONS These results suggest that an anti-resorptive drug administered systemically is distributed to areas of local inflammation in the jaw and can prevent PL development.
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Affiliation(s)
- Megumi Ikeda
- Division of Endodontics, Department of Conservative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan; Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan.
| | - Hideomi Takizawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan; Department of Orthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Noriyuki Suzuki
- Division of Endodontics, Department of Conservative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan.
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8
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Takizawa H, Karakawa A, Suzawa T, Chatani M, Ikeda M, Sakai N, Azetsu Y, Takahashi M, Urano E, Kamijo R, Maki K, Takami M. Neural crest-derived cells possess differentiation potential to keratinocytes in the process of wound healing. Biomed Pharmacother 2021; 146:112593. [PMID: 34968925 DOI: 10.1016/j.biopha.2021.112593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 11/02/2022] Open
Abstract
Neural crest-derived cells (NCDCs), which exist as neural crest cells during the fetal stage and differentiate into palate cells, also exist in adult palate tissues, though with unknown roles. In the present study, NCDCs were labeled with EGFP derived from P0-Cre/CAG-CAT-EGFP (P0-EGFP) double transgenic mice, then their function in palate mucosa wound healing was analyzed. As a palate wound healing model, left-side palate mucosa of P0-EGFP mice was resected, and stem cell markers and keratinocyte markers were detected in healed areas. NCDCs were extracted from normal palate mucosa and precultured with stem cell media for 14 days, then were differentiated into keratinocytes or osteoblasts to analyze pluripotency. The wound healing process started with marginal mucosal regeneration on day two and the entire wound area was lined by regenerated mucosa with EGFP-positive cells (NCDCs) on day 28. EGFP-positive cells comprised approximately 60% of cells in healed oral mucosa, and 65% of those expressed stem cell markers (Sca-1+, PDGFRα+) and 30% expressed a keratinocyte marker (CK13+). In tests of cultured palate mucosa cells, approximately 70% of EGFP-positive cells expressed stem cell markers (Sca-1+, PDGFRα+). Furthermore, under differentiation inducing conditions, cultured EGFP-positive cells were successfully induced to differentiate into keratinocytes and osteoblasts. We concluded that NCDCs exist in adult palate tissues as stem cells and have potential to differentiate into various cell types during the wound healing process.
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Affiliation(s)
- Hideomi Takizawa
- Department of Orthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo 145-8515, Japan; Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
| | - Tetsuo Suzawa
- Department of Biochemistry, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Megumi Ikeda
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Division of Endodontology, Department of Conservative Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Masahiro Takahashi
- Department of Orthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo 145-8515, Japan
| | - Eri Urano
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo 145-8515, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Koutaro Maki
- Department of Orthodontics, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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9
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Nakasone K, Fukuzawa K, Kiuchi K, Takami M, Takemoto M, Sakai J, Nakamura T, Yatomi A, Sonoda Y, Takahara H, Yamamoto K, Suzuki Y, Tani K, Hirata K. VT recurrence and predictors in patients with VT inducibility at the end of VT ablation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
A successful Radiofrequency (RF) ablation of ventricular tachycardia (VT) can prevent VT recurrence. It has been reported that VT non-inducibility at the end of RF ablation is associated with less likely VT recurrence in ischemic cardiomyopathy (ICM) and non-ICM (NCIM). However, it is not clear whether we should use VT non-inducibility as routine end point in RF ablation of VT.
Purpose
The aim of this study was to evaluate VT recurrence in patients who couldn't be achieved VT non-inducibility at the end of RF ablation and the factors attributed to VT recurrence in ICM and NICM patients.
Methods
Between January 2009 and April 2020, 84 consecutive patients (ICM: 34, NICM: 50) underwent RF ablation for drug-resistant VT in our hospital. VT non-inducibility was defined as any ventricular tachy-arrhythmia, including clinical VT, non-clinical VT, and VF, was not induced by programed stimuli at the end of session. Non-inducibility was achieved in 37 patients but it was not achieved in 47 patients (ICM: 18, NICM: 29). To evaluate the validity of “non-inducibility” as an end point of VT ablation, 47 patients (male: 40, mean age: 66±15 years) in whom non-inducibility of any ventricular tachyarrhythmia was not achieved were studied. The primary endpoint was recurrence of any sustained VT and VF during follow up period (mean follow-up period was 1.4 (range, 0.0, 2.0) years.)
Results
Mean left ventricular ejection fraction (LVEF) was 36±13%. Epicardial ablation was required in 8 patients. 32 patients had electrical storm at the time of ablation. Among them, 21 patients had VT recurrence and 26 patients had non-VT recurrence during follow-up period. VT recurrence rate was significantly lower in patients with LVEF≥35% than those with LVEF<35% (HR=0.31, 95% CI 1.25–9.92). Multivariate survival analysis identified LVEF≥35% (HR=0.34, 95% CI 0.10–0.98) and ablation of VT isthmus (HR=0.18, 95% CI 0.02–0.78) as independent predictors of non-VT recurrence.
Conclusions
Even if non-inducibility of any ventricular tachyarrhythmia wasn't achieved at the end of ablation, the patients with LVEF≥35% or who had ablated of VT isthmus might prevent VT recurrence. The validity of non-inducibility of any ventricular tachyarrhythmia should be evaluated in each patient's background.
Funding Acknowledgement
Type of funding sources: Public hospital(s). Main funding source(s): Abbott, Medtronic
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Affiliation(s)
| | | | | | | | | | - J Sakai
- Kobe University, Kobe, Japan
| | | | | | | | | | | | | | - K Tani
- Kobe University, Kobe, Japan
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10
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Yoshida H, Suzawa T, Shibata Y, Takahashi M, Kawai R, Takami M, Maki K, Kamijo R. Neural crest-derived cells in nasal conchae of adult mice contribute to bone regeneration. Biochem Biophys Res Commun 2021; 554:173-178. [PMID: 33798944 DOI: 10.1016/j.bbrc.2021.03.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 01/02/2023]
Abstract
Neural crest-derived cells (NCDCs), a class of adult stem cells not restricted to embryonic tissues, are attractive tissue regenerative therapy candidates because of their ease of isolation, self-renewing properties, and multipotency. Although adult NCDCs can undergo osteogenic differentiation in vitro, whether they induce bone formation in vivo remains unclear. Previously, our group reported findings showing high amounts of NCDCs scattered throughout nasal concha tissues of adult mice. In the present study, NCDCs in nasal conchae labeled with enhanced green fluorescent protein (EGFP) were collected from adult P0-Cre/CAG-CAT-EGFP double transgenic mice, then cultured in serum-free medium to increase the number. Subsequently, NCDCs were harvested and suspended in type I atelocollagen gel, then an atelocollagen sponge was used as a scaffold for the cell suspension. Atelocollagen scaffolds with NCDCs were placed on bone defects created in a mouse calvarial bone defect model. Over the ensuing 12 weeks, micro-CT and histological analysis findings showed that mice with scaffolds containing NCDCs had slightly greater bone formation as compared to those with a scaffold alone. Furthermore, Raman spectroscopy revealed spectral properties of bone in mice that received scaffolds with NCDCs similar to those of native calvarial bone. Bone regeneration is important not only for gaining bone mass but also chemical properties. These results are the first to show the validity of biomolecule-free adult nasal concha-derived NCDCs for bone regeneration, including the chemical properties of regenerated bone tissue.
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Affiliation(s)
- Hiroshi Yoshida
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan; Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Tetsuo Suzawa
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan.
| | - Yo Shibata
- Department of Conservative Dentistry, Division of Biomaterials and Engineering, School of Dentistry, Showa University, Tokyo, Japan
| | - Masahiro Takahashi
- Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Ryota Kawai
- Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, Japan
| | - Koutaro Maki
- Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan
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11
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Yu J, Kim S, Lee N, Jeon H, Lee J, Takami M, Rho J. Pax5 Negatively Regulates Osteoclastogenesis through Downregulation of Blimp1. Int J Mol Sci 2021; 22:ijms22042097. [PMID: 33672551 PMCID: PMC7923754 DOI: 10.3390/ijms22042097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 12/23/2022] Open
Abstract
Paired box protein 5 (Pax5) is a crucial transcription factor responsible for B-cell lineage specification and commitment. In this study, we identified a negative role of Pax5 in osteoclastogenesis. The expression of Pax5 was time-dependently downregulated by receptor activator of nuclear factor kappa B (RANK) ligand (RANKL) stimulation in osteoclastogenesis. Osteoclast (OC) differentiation and bone resorption were inhibited (68.9% and 48% reductions, respectively) by forced expression of Pax5 in OC lineage cells. Pax5 led to the induction of antiosteoclastogenic factors through downregulation of B lymphocyte-induced maturation protein 1 (Blimp1). To examine the negative role of Pax5 in vivo, we generated Pax5 transgenic (Pax5Tg) mice expressing the human Pax5 transgene under the control of the tartrate-resistant acid phosphatase (TRAP) promoter, which is expressed mainly in OC lineage cells. OC differentiation and bone resorption were inhibited (54.2–76.9% and 24.0–26.2% reductions, respectively) in Pax5Tg mice, thereby contributing to the osteopetrotic-like bone phenotype characterized by increased bone mineral density (13.0–13.6% higher), trabecular bone volume fraction (32.5–38.1% higher), trabecular thickness (8.4–9.0% higher), and trabecular number (25.5–26.7% higher) and decreased trabecular spacing (9.3–10.4% lower) compared to wild-type control mice. Furthermore, the number of OCs was decreased (48.8–65.3% reduction) in Pax5Tg mice. These findings indicate that Pax5 plays a negative role in OC lineage specification and commitment through Blimp1 downregulation. Thus, our data suggest that the Pax5–Blimp1 axis is crucial for the regulation of RANKL-induced osteoclastogenesis.
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Affiliation(s)
- Jiyeon Yu
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea; (J.Y.); (S.K.); (N.L.); (H.J.)
| | - Sumi Kim
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea; (J.Y.); (S.K.); (N.L.); (H.J.)
| | - Nari Lee
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea; (J.Y.); (S.K.); (N.L.); (H.J.)
| | - Hyoeun Jeon
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea; (J.Y.); (S.K.); (N.L.); (H.J.)
| | - Jun Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, College of Dentistry, Wonkwang University, Iksan 54538, Korea;
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawaku 142-8555, Japan;
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea; (J.Y.); (S.K.); (N.L.); (H.J.)
- Correspondence: ; Tel.: +82-42-821-6420; Fax: +82-42-822-7367
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12
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Hosonuma M, Sakai N, Furuya H, Kurotaki Y, Sato Y, Handa K, Dodo Y, Ishikawa K, Tsubokura Y, Negishi-Koga T, Tsuji M, Kasama T, Kiuchi Y, Takami M, Isozaki T. Inhibition of hepatocyte growth factor/c-Met signalling abrogates joint destruction by suppressing monocyte migration in rheumatoid arthritis. Rheumatology (Oxford) 2021; 60:408-419. [PMID: 32770199 DOI: 10.1093/rheumatology/keaa310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/25/2020] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES To determine the expression of hepatocyte growth factor (HGF) in RA biological fluids, the role of HGF in monocyte migration and the therapeutic effect of the c-Met inhibitor savolitinib in an arthritis model mice. METHODS HGF/c-Met expression in serum, SF and synovial tissues (STs) obtained from RA patients and controls, as well as RA fibroblast-like synoviocytes (FLSs), was evaluated by ELISA and immunostaining. To determine the function of HGF in RA SF, we preincubated RA SF with a neutralizing anti-HGF antibody and measured the chemotactic ability of a human acute monocytic leukaemia cell line (THP-1). Additionally, examinations were conducted of SKG mice treated with savolitinib for 4 weeks. RESULTS HGF levels in serum from RA patients were significantly higher than those in the controls and were decreased by drug treatment for 24 weeks. Additionally, the HGF level in SF from RA patients was higher than that in SF from OA patients. HGF and c-Met expression was also noted in RA STs. Stimulation of RA FLSs with TNF-α increased HGF/c-Met expression in a concentration-dependent manner, and c-Met signal inhibition suppressed production of fractalkine/CX3CL1 and macrophage inflammatory protein-1α/CCL3. When HGF was removed by immunoprecipitation, migration of THP-1 in RA SF was suppressed. In SKG mice, savolitinib significantly suppressed ankle bone destruction on µCT, with an associated reduction in the number of tartrate-resistant acid phosphatase-positive osteoclasts. CONCLUSION HGF produced by inflammation in synovium of RA patients activates monocyte migration to synovium and promotes bone destruction via a chemotactic effect and enhanced chemokine production.
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Affiliation(s)
- Masahiro Hosonuma
- Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Shinagawa.,Division of Medical Pharmacology, Department of Pharmacology, Showa University School of Medicine, Shinagawa.,Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa
| | - Hidekazu Furuya
- Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Shinagawa
| | - Yutaro Kurotaki
- Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa.,Division of Community-Based Comprehensive Dentistry, Department of Special Needs Dentistry, School of Dentistry, Showa University, Ota
| | - Yurie Sato
- Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa.,Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, Ota
| | - Kazuaki Handa
- Division of Medical Pharmacology, Department of Pharmacology, Showa University School of Medicine, Shinagawa.,Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa.,Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa
| | - Yusuke Dodo
- Division of Medical Pharmacology, Department of Pharmacology, Showa University School of Medicine, Shinagawa.,Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa.,Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa
| | - Koji Ishikawa
- Parmacological Research Center, Showa University, Shinagawa.,Department of Orthopaedic Surgery, Showa University School of Medicine, Shinagawa
| | - Yumi Tsubokura
- Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Shinagawa
| | - Takako Negishi-Koga
- Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa.,Division of Mucosal Barriology, International Research and Development Centre for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Minato, Tokyo, Japan
| | - Mayumi Tsuji
- Division of Medical Pharmacology, Department of Pharmacology, Showa University School of Medicine, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa
| | - Tsuyoshi Kasama
- Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Shinagawa
| | - Yuji Kiuchi
- Division of Medical Pharmacology, Department of Pharmacology, Showa University School of Medicine, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, Shinagawa.,Parmacological Research Center, Showa University, Shinagawa
| | - Takeo Isozaki
- Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Shinagawa
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13
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Yamakawa T, Okamatsu N, Ishikawa K, Kiyohara S, Handa K, Hayashi E, Sakai N, Karakawa A, Chatani M, Tsuji M, Inagaki K, Kiuchi Y, Negishi-Koga T, Takami M. Novel gene Merlot inhibits differentiation and promotes apoptosis of osteoclasts. Bone 2020; 138:115494. [PMID: 32569872 DOI: 10.1016/j.bone.2020.115494] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/15/2020] [Accepted: 06/15/2020] [Indexed: 12/31/2022]
Abstract
Extended osteoclast longevity is deeply involved in the pathogenesis of bone diseases such as osteoporosis and rheumatoid arthritis, though the mechanisms that determine osteoclast lifespan are not fully understood. Here we present findings indicating that the newly characterized gene Merlot, which encodes a highly conserved yet uncharacterized protein in vertebrates, is an important regulator for termination of osteoclastogenesis via induction of apoptosis. Mice lacking Merlot exhibited low bone mass due to increased osteoclast and bone resorption. Furthermore, osteoclast precursors overexpressing Merlot failed to differentiate into mature osteoclasts, while Merlot deficiency led to hyper-nucleation and prolonged survival of osteoclasts, accompanied by sustained nuclear localization of nuclear factor of activated T cell c1 (NFATc1) and derepression of glycogen synthase kinase-3β (GSK3β) activity, known to regulate NFATc1 activity and induce apoptosis. Merlot-deficient osteoclasts were found to represent suppression of caspase-3-mediated apoptosis and Merlot deficiency caused transcriptional downregulation of a proapoptotic cascade, including Bax, Bak, Noxa, and Bim, as well as the executor caspase members Casp-3, -6, and -7, and upregulation of anti-apoptotic Bcl2, resulting in a low apoptotic threshold. Thus, Merlot regulates osteoclast lifespan by inhibition of differentiation and simultaneous induction of apoptosis via regulation of the NFATc1-GSK3β axis.
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Affiliation(s)
- Tomoyuki Yamakawa
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Nobuaki Okamatsu
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Koji Ishikawa
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Shuichi Kiyohara
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Implant Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Kazuaki Handa
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Erika Hayashi
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Mayumi Tsuji
- Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Katsunori Inagaki
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Takako Negishi-Koga
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Division of Mucosal Barriology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8629, Japan.
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Pharmacology Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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14
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Hosonuma M, Sakai N, Furuya H, Tsubokura Y, Nishimi S, Ikari Y, Ishii S, Maeoka A, Tokunaga T, Wakabayashi K, Kasama T, Takami M, Isozaki T. SAT0005 INHIBITION OF HEPATOCYTE GROWTH FACTOR/C-MET SIGNALING ABROGATES JOINT DESTRUCTION BY SUPPRESSING MIGRATION OF MONOCYTES TO SYNOVIUM IN RHEUMATOID ARTHRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Hepatocyte growth factor (HGF), originally discovered as a mitogen of hepatocytes, binds to receptor-tyrosine kinase c-Met and has been shown to be a multi-functional cytokine that promotes processes such as cell proliferation, survival, differentiation, migration, and angiogenesis1. Since HGF/c-Met signaling also leads to tumorigenesis and cancer invasion, that has recently attracted attention as a target for anticancer agents2. However, in reports of rheumatoid arthritis (RA), though anti-inflammatory and antiangiogenic mechanisms related to HGF/c-Met signal inhibition have been reported, the role of HGF in RA bone destruction through monocyte migration remains unclear3.Objectives:To determine the expression of HGF in RA biological fluids, the role it plays in monocyte migration and the therapeutic effect of a savolitinib, a specific c-Met inhibitor, in arthritis model mice.Methods:HGF/c-Met expression in serum, synovial fluid (SF), and synovial tissues (STs) obtained from RA patients and control subjects, as well as RA fibroblast-like synoviocytes (FLSs) was evaluated by ELISA and immunostaining. To determine the function of HGF in RA SFs, we preincubated RA SFs with a neutralizing anti-HGF antibody and measured the ability of these SFs to induce the human acute monocytic leukemia cell line (THP-1) chemotaxis. Additionally, examinations of SKG mice treated with savolitinib (2.5 mg/kg/day) for 4 weeks were conducted.Results:HGF level in serum from RA patients was significantly higher as compared to the controls (930 ± 97 vs. 476 ± 97 pg/mL, p <0.01) and decreased by drug treatment for 24 weeks (1147 ± 284 vs. 539 ± 160 pg/mL, p <0.05). Additionally, HGF level in SF from RA patients was higher as compared to SF from osteoarthritis patients (1632 ± 366 vs. 566 ± 140 pg/mL, p <0.05). HGF and c-Met expressions were also noted in RA STs. Stimulation of RA-FLS with TNF-α increased HGF/c-Met expression in a concentration-dependent manner, and c-Met signal inhibition by SU11274 suppressed production of fractalkine/CX3CL1, CXCL16, and MIP-1α/CCL3 (mean 50%, 56%, 90%, respectively). When HGF was removed by immunoprecipitation, migration of THP-1 in RA-SF was suppressed (mean 23%). In SKG mice, savolitinib significantly suppressed ankle bone damage on µCT, with an associated reduction in number of tartrate-resistant acid phosphatase-positive osteoclasts.Conclusion:HGF is produced by inflammation in synovium associated with RA, and then activates monocyte migration to synovium tissue and promotes bone destruction through its own chemotactic effect as well as enhanced chemokine production. These results indicate that a strategy that targets c-Met signaling may be important for resolving bone destruction in RA.References:[1] Nakamura T, Nishizawa T, Hagiya M, Seki T, Shimonishi M, Sugimura A, Tashiro K, Shimizu S. Molecular cloning and expression of human hepatocyte growth factor. Nature. 1989 Nov 23;342(6248):440-3[2] Lee D, Sung ES, Ahn JH, An S, Huh J, You WK. Development of antibody-based c-Met inhibitors for targeted cancer therapy. Immunotargets Ther. 2015 Feb 9;4:35-44.[3] Koch AE, Halloran MM, Hosaka S, Shah MR, Haskell CJ, Baker SK, Panos RJ, Haines GK, Bennett GL, Pope RM, Ferrara N. Hepatocyte growth factor. A cytokine mediating endothelial migration in inflammatory arthritis. Arthritis Rheum. 1996 Sep;39(9):1566-75Disclosure of Interests:None declared
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Kiyohara S, Sakai N, Handa K, Yamakawa T, Ishikawa K, Chatani M, Karakawa A, Azetsu Y, Munakata M, Ozeki M, Negishi-Koga T, Takami M. Effects of N-methyl-d-aspartate receptor antagonist MK-801 (dizocilpine) on bone homeostasis in mice. J Oral Biosci 2020; 62:131-138. [PMID: 32289529 DOI: 10.1016/j.job.2020.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/19/2020] [Accepted: 02/03/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVES To gain insight into the role of the N-methyl-d-aspartate (NMDA) receptor in bone metabolism by examining the effects of its noncompetitive antagonist, MK-801 (dizocilpine), on bone homeostasis and bone healing in mice. METHODS MK-801 (2.5 mg/kg) or saline (in control groups) was intravenously administered to healthy mice and mice with bone-defects daily for seven to 14 days. Bone defects were artificially created in femurs using a drill and reamer. Following euthanasia, bones were extracted and processed for microcomputed tomography (μCT) and histological analyses. The effects of MK-801 on osteoclast differentiation by bone marrow macrophages (BMMs) were examined in vitro. mRNA expressionlevels of Grin3b levels were also examined using reverse-transcription polymerase chain reaction (RT-PCR). RESULTS Bone volume was significantly decreased in mice administered MK-801 for 14 days. Additionally, the number of osteoclasts was reduced, while number of osteoblasts and rate of bone formation were increased in these mice. MK-801 inhibited osteoclast differentiation dose-dependently in vitro. RT-PCR findings suggested expression of Grin3b, a subunit of the NMDA receptor, in BMMs. During the healing process of artificially created defects in femurs, no significant differences were found between the control and MK-801-treated groups, indicating no stimulatory or inhibitory effects by MK-801 administration. CONCLUSIONS These results indicate that blockade of the NMDA receptor by MK-801 administration affects bone metabolism but not the healing process of artificial bone defects.
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Affiliation(s)
- Shuichi Kiyohara
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Department of Implant Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Kazuaki Handa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Department of Orthopedic Surgery, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Tomoyuki Yamakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Department of Orthopedic Surgery, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Koji Ishikawa
- Department of Orthopedic Surgery, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Motohiro Munakata
- Department of Implant Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan.
| | - Masahiko Ozeki
- Department of Implant Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan.
| | - Takako Negishi-Koga
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Division of Mucosal Barriology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato, Tokyo, 108-8639, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555 Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai Shinagawa, Tokyo, 142-8555, Japan.
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Dodo Y, Chatani M, Azetsu Y, Hosonuma M, Karakawa A, Sakai N, Negishi-Koga T, Tsuji M, Inagaki K, Kiuchi Y, Takami M. Myelination during fracture healing in vivo in myelin protein zero (p0) transgenic medaka line. Bone 2020; 133:115225. [PMID: 31923703 DOI: 10.1016/j.bone.2020.115225] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/04/2020] [Accepted: 01/05/2020] [Indexed: 12/11/2022]
Abstract
During the fracture healing process, osteoblasts and osteoclasts, as well as the nervous system are known to play important roles for signaling in the body. Glia cells contribute to the healing process by myelination, which can increase the speed of signals transmitted between neurons. However, the behavior of myelinating cells at a fracture site remains unclear. We developed a myelin protein zero (mpz)-EGFP transgenic medaka line for tracing myelinating cells. Mpz-enhanced green fluorescence protein (EGFP)-positive (mpz+) cells are driven by the 2.9-kb promoter of the medaka mpz gene, which is distributed throughout the nervous system, such as the brain, spinal cord, lateral line, and peripheral nerves. In the caudal fin region, mpz+ cells were found localized parallel with the fin ray (bone) in the adult stage. mpz+ cells were not distributed with fli-DsRed positive (fli+) blood vessels, but with some nerve fibers, and were dyed with the anti-acetylated tubulin antibody. We then fractured one side of the caudal lepidotrichia in a caudal fin of mpz-EGFP medaka and found a unique phenomenon, in that mpz+ cells were accumulated at 1 bone away from the fracture site. This mpz+ cell accumulation phenomenon started from 4 days after fracture of the proximal bone. Thereafter, mpz+ cells became elongated from the proximal bone to the distal bone and finally showed a crosslink connection crossing the fracture site to the distal bone at 28 days after fracture. Finally, the effects of rapamycin, known as a mTOR inhibitor, on myelination was examined. Rapamycin treatment of mpz-EGFP/osterix-DsRed double transgenic medaka inhibited not only the crosslink connection of mpz+ cells but also osterix+ osteoblast accumulation at the fracture site, accompanied with a fracture healing defect. These findings indicated that mTOR signaling plays important roles in bone formation and neural networking during fracture healing. Taken together, the present results are the first to show the dynamics of myelinating cells in vivo.
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Affiliation(s)
- Yusuke Dodo
- Department of Pharmacology, Division of Medical Pharmacology, Showa University School of Medicine, Tokyo 142-8555, Japan; Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan; Department of Orthopaedic Surgery, Showa University School of Medicine, Tokyo 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan.
| | - Yuki Azetsu
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Masahiro Hosonuma
- Department of Pharmacology, Division of Medical Pharmacology, Showa University School of Medicine, Tokyo 142-8555, Japan; Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Takako Negishi-Koga
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan; Division of Mucosal Barriology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Mayumi Tsuji
- Department of Pharmacology, Division of Medical Pharmacology, Showa University School of Medicine, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Katsunori Inagaki
- Department of Orthopaedic Surgery, Showa University School of Medicine, Tokyo 142-8555, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, Division of Medical Pharmacology, Showa University School of Medicine, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan; Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
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17
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Kurotaki Y, Sakai N, Miyazaki T, Hosonuma M, Sato Y, Karakawa A, Chatani M, Myers M, Suzawa T, Negishi-Koga T, Kamijo R, Miyazaki A, Maruoka Y, Takami M. Effects of lipid metabolism on mouse incisor dentinogenesis. Sci Rep 2020; 10:5102. [PMID: 32198436 PMCID: PMC7083963 DOI: 10.1038/s41598-020-61978-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/03/2020] [Indexed: 01/09/2023] Open
Abstract
Tooth formation can be affected by various factors, such as oral disease, drug administration, and systemic illness, as well as internal conditions including dentin formation. Dyslipidemia is an important lifestyle disease, though the relationship of aberrant lipid metabolism with tooth formation has not been clarified. This study was performed to examine the effects of dyslipidemia on tooth formation and tooth development. Dyslipidemia was induced in mice by giving a high-fat diet (HFD) for 12 weeks. Additionally, LDL receptor-deficient (Ldlr−/−) strain mice were used to analyze the effects of dyslipidemia and lipid metabolism in greater detail. In the HFD-fed mice, incisor elongation was decreased and pulp was significantly narrowed, while histological findings revealed disappearance of predentin. In Ldlr−/− mice fed regular chow, incisor elongation showed a decreasing trend and pulp a narrowing trend, while predentin changes were unclear. Serum lipid levels were increased in the HFD-fed wild-type (WT) mice, while Ldlr−/− mice given the HFD showed the greatest increase. These results show important effects of lipid metabolism, especially via the LDL receptor, on tooth homeostasis maintenance. In addition, they suggest a different mechanism for WT and Ldlr−/− mice, though the LDL receptor pathway may not be the only factor involved.
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Affiliation(s)
- Yutaro Kurotaki
- Division of Community-Based Comprehensive Dentistry, Department of Special Needs Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan.,Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan. .,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
| | - Takuro Miyazaki
- Department of Biochemistry, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Hosonuma
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Division of Rheumatology, Department of Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yurie Sato
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Akiko Karakawa
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masahiro Chatani
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Mie Myers
- Division of Community-Based Comprehensive Dentistry, Department of Special Needs Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Tetsuo Suzawa
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Takako Negishi-Koga
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.,Division of Mucosal Barriology, International Research and Development Center for Mucosal vaccines, The Institute of Medical Science, The Institute of Medical Science The University of Tokyo, 4-6-1 Shirokanedai, Minato, Tokyo, 108-8639, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Akira Miyazaki
- Department of Biochemistry, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yasubumi Maruoka
- Division of Community-Based Comprehensive Dentistry, Department of Special Needs Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan. .,Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
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Shibuya I, Takami M, Kawamoto M, Karakawa A, Nakamura S, Kamijo R. Immunohistochemical Analysis of the Distribution of RANKL-Expressing Cells and the Expression of Osteoclast-Related Markers in Giant Cell Tumor of Bone. J HARD TISSUE BIOL 2020. [DOI: 10.2485/jhtb.29.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Isao Shibuya
- Department of Biochemistry, Showa University School of Dentistry
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry
| | - Masashi Kawamoto
- Department of Diagnostic Pathology, Teikyo University Mizonokuchi Hospital
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry
| | - Shigeru Nakamura
- Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital
| | - Ryutaro Kamijo
- Department of Biochemistry, Showa University School of Dentistry
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19
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Isawa M, Karakawa A, Sakai N, Nishina S, Kuritani M, Chatani M, Negishi-Koga T, Sato M, Inoue M, Shimada Y, Takami M. Biological Effects of Anti-RANKL Antibody and Zoledronic Acid on Growth and Tooth Eruption in Growing Mice. Sci Rep 2019; 9:19895. [PMID: 31882595 PMCID: PMC6934544 DOI: 10.1038/s41598-019-56151-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 12/03/2019] [Indexed: 11/30/2022] Open
Abstract
The anti-bone resorptive drugs denosumab, an anti-human-RANKL antibody, and zoledronic acid (ZOL), a nitrogen-containing bisphosphonate, have recently been applied for treatment of pediatric patients with bone diseases, though details regarding their effects in growing children have yet to be fully elucidated. In the present study, we administered these anti-resorptive drugs to mice from the age of 1 week and continued once-weekly injections for a total of 7 times. Mice that received the anti-RANKL antibody displayed normal growth and tooth eruption, though osteopetrotic bone volume gain in long and alveolar bones was noted, while there were nearly no osteoclasts and a normal of number osteoblasts observed. In contrast, ZOL significantly delayed body growth, tooth root formation, and tooth eruption, with increased osteoclast and decreased osteoblast numbers. These findings suggest regulation of tooth eruption via osteoblast differentiation by some types of anti-resorptive drugs.
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Affiliation(s)
- Motoki Isawa
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Saki Nishina
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Miku Kuritani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
- Department of Special Needs Dentistry for Persons with Disabilities, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
| | - Takako Negishi-Koga
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan
- Department of Mucosal Barriology, International Research and Development for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Masashi Sato
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Mitsuko Inoue
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Yukie Shimada
- Department of Pediatric Dentistry, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
- Pharmacological Research Center, Showa University, Tokyo, 142-8555, Japan.
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Hosonuma M, Sakai N, Takaki T, Matsushima H, Takebe A, Kiuchi Y, Takami M. PB-13 Three-dimensional ultrastructural analysis of bone-resorbing osteoclasts by Correlative Light Electron Microscopy (CLEM) and Focused Ion Beam Scanning Electron Microscope (FIB-SEM) suggested novel functions of osteoclasts. Microscopy (Oxf) 2019. [DOI: 10.1093/jmicro/dfz071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Masahiro Hosonuma
- Department of Pharmacology at School of Dentistry in Showa University
- Department of Pharmacology at School of Medicine in Showa University
- Division of Rheumatology at Department of Medicine in Showa University School of Medicine
| | - Nobuhiro Sakai
- Department of Pharmacology at School of Dentistry in Showa University
| | | | | | | | - Yuji Kiuchi
- Department of Pharmacology at School of Medicine in Showa University
| | - Masamichi Takami
- Department of Pharmacology at School of Dentistry in Showa University
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Imai H, Yoshimura K, Miyamoto Y, Sasa K, Sugano M, Chatani M, Takami M, Yamamoto M, Kamijo R. Roles of monocarboxylate transporter subtypes in promotion and suppression of osteoclast differentiation and survival on bone. Sci Rep 2019; 9:15608. [PMID: 31666601 PMCID: PMC6821745 DOI: 10.1038/s41598-019-52128-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 10/14/2019] [Indexed: 01/07/2023] Open
Abstract
Monocarboxylate transporters (MCTs) provide transmembrane transport of monocarboxylates such as lactate and pyruvate. The present results showed that α-cyano-4-hydroxycinnamic acid (CHC), an inhibitor of MCTs, promoted osteoclast differentiation from macrophages at lower concentrations (0.1–0.3 mM) and suppressed that at a higher concentration (1.0 mM). On the other hand, CHC reduced the number of mature osteoclasts on the surface of dentin in a concentration-dependent manner. Additionally, macrophages and osteoclasts were found to express the Mct1, Mct2, and Mct4 genes, with Mct1 and Mct4 expression higher in macrophages, and that of Mct2 higher in osteoclasts. Although Mct1 gene knockdown in macrophages enhanced osteoclast formation induced by RANKL, Mct2 gene knockdown suppressed that. Finally, Mct2 gene silencing in mature osteoclasts decreased their number and, thereby, bone resorption. These results suggest that MCT1 is a negative regulator and MCT2 a positive regulator of osteoclast differentiation, while MCT2 is required for bone resorption by osteoclasts.
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Affiliation(s)
- Hiroko Imai
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan.,Department of Periodontology, Showa University School of Dentistry, Tokyo, Japan
| | - Kentaro Yoshimura
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan.
| | - Yoichi Miyamoto
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan
| | - Kiyohito Sasa
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan
| | - Marika Sugano
- Department of Periodontology, Showa University School of Dentistry, Tokyo, Japan
| | - Masahiro Chatani
- Department of Pharmacology, Showa University School of Dentistry, Tokyo, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, Tokyo, Japan
| | - Matsuo Yamamoto
- Department of Periodontology, Showa University School of Dentistry, Tokyo, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan
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22
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Nagaoka M, Maeda T, Chatani M, Handa K, Yamakawa T, Kiyohara S, Negishi-Koga T, Kato Y, Takami M, Niida S, Lang SC, Kruger MC, Suzuki K. A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models. Antioxidants (Basel) 2019; 8:antiox8090386. [PMID: 31509995 PMCID: PMC6769591 DOI: 10.3390/antiox8090386] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/02/2019] [Accepted: 09/07/2019] [Indexed: 02/03/2023] Open
Abstract
In our previous investigation, delphinidin, one of the most abundant anthocyanins found in vegetables and berry fruits, had been shown to inhibit osteoclasts and prevent bone loss in mouse models of osteoporosis. In the present study, we investigated whether a delphinidin glycoside-enriched maqui berry extract (MBE, Delphinol®) exhibits beneficial effects on bone metabolism both in vitro and in vivo. MBE stimulated the osteoblastic differentiation of MC3T3-E1 cells, as indicated by enhanced mineralized nodule formation, and increased alkaline phosphatase activity, through the upregulation of bone morphogenetic protein 2 (Bmp2), runt-related transcription factor 2 (Runx2), osterix (Osx), osteocalcin (Ocn), and matrix extracellular phosphoglycoprotein (Mepe) mRNA expression. Immunostaining and immunoprecipitation assays demonstrated that MBE suppressed NF-κB transnucleation through acting as a superoxide anion/peroxynitrite scavenger in MC3T3-E1 cells. Simultaneously, MBE inhibited both osteoclastogenesis in primary bone marrow macrophages and pit formation by maturated osteoclasts on dentine slices. Microcomputed tomography (micro-CT) and bone histomorphometry analyses of femurs demonstrated that the daily ingestion of MBE significantly increased BV/TV (ratio of bone volume to tissue volume), Tb.Th (trabecular thickness), Tb.N (trabecular number), N.Nd/N.Tm (node to terminus ratio), OV/TV (ratio of osteoid volume to tissue volume), BFR/TV (bone formation rate per tissue volume), and significantly decreased Tb.Sp (trabecular separation), ES/BS (ratio of eroded surface to bone surface) and N.Oc/BS (number of osteoclast per unit of bone surface), compared to vehicle controls in osteopenic mouse models. These findings suggest that MBE can be a promising natural agent for the prevention of bone loss in osteopenic conditions by not only inhibiting bone resorption, but also stimulating bone formation.
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Affiliation(s)
- Masahiro Nagaoka
- Department of Pharmacology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan.
| | - Toyonobu Maeda
- Department of Oral Function and Molecular Biology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan.
| | - Masahiro Chatani
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Kazuaki Handa
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Tomoyuki Yamakawa
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Shuichi Kiyohara
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Takako Negishi-Koga
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Yasumasa Kato
- Department of Oral Function and Molecular Biology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan.
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan.
| | - Shumpei Niida
- Medical Genome Center, National Center for Geriatrics and Gerontology (NCGG), Aichi 474-8511, Japan.
| | - Stefanie C Lang
- Anklam Extrakt GmbH, Marienbergstr. 92, 90411 Nuremberg, Germany.
| | - Marlena C Kruger
- School of Health Sciences, College of Health, Massey University, Palmerston North 4442, New Zealand.
| | - Keiko Suzuki
- Department of Pharmacology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan.
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23
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Soda N, Sakai N, Kato H, Takami M, Fujita T. Singleton-Merten Syndrome-like Skeletal Abnormalities in Mice with Constitutively Activated MDA5. J Immunol 2019; 203:1356-1368. [PMID: 31366715 DOI: 10.4049/jimmunol.1900354] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 07/01/2019] [Indexed: 12/14/2022]
Abstract
Singleton-Merten syndrome (SMS) is a type I interferonopathy characterized by dental dysplasia, aortic calcification, skeletal abnormalities, glaucoma, and psoriasis. A missense mutation in IFIH1 encoding a cytoplasmic viral RNA sensor MDA5 has recently been identified in the SMS patients as well as in patients with a monogenic form of lupus. We previously reported that Ifih1gs/+ mice express a constitutively active MDA5 and spontaneously develop lupus-like nephritis. In this study, we demonstrate that the Ifih1gs/+ mice also exhibit SMS-like bone abnormalities, including decreased bone mineral density and thin cortical bone. Histological analysis revealed a low number of osteoclasts, low bone formation rate, and abnormal development of growth plate cartilages in Ifih1gs/+ mice. These abnormalities were not observed in Ifih1gs/+ ・Mavs-/- and Ifih1gs/+ ・Ifnar1-/- mice, indicating the critical role of type I IFNs induced by MDA5/MAVS-dependent signaling in the bone pathogenesis of Ifih1gs/+ mice, affecting bone turnover. Taken together, our findings suggest the inhibition of type I IFN signaling as a possible effective therapeutic strategy for bone disorders in SMS patients.
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Affiliation(s)
- Nobumasa Soda
- Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, 606-8507 Japan.,Laboratory of Molecular and Cellular Immunology, Graduate School of Biostudies, Kyoto University, Kyoto, 606-8501 Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, 142-8555 Japan; and
| | - Hiroki Kato
- Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, 606-8507 Japan.,Institute of Cardiovascular Immunology, University Hospital Bonn, University of Bonn, Bonn, 53127 Germany
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, 142-8555 Japan; and
| | - Takashi Fujita
- Laboratory of Molecular Genetics, Institute for Frontier Life and Medical Science, Kyoto University, Kyoto, 606-8507 Japan; .,Laboratory of Molecular and Cellular Immunology, Graduate School of Biostudies, Kyoto University, Kyoto, 606-8501 Japan
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24
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Manome Y, Suzuki D, Mochizuki A, Saito E, Sasa K, Yoshimura K, Inoue T, Takami M, Inagaki K, Funatsu T, Kamijo R. The inhibition of malignant melanoma cell invasion of bone by the TLR7 agonist R848 is dependent upon pro-inflammatory cytokines produced by bone marrow macrophages. Oncotarget 2018; 9:29934-29943. [PMID: 30042824 PMCID: PMC6057452 DOI: 10.18632/oncotarget.25711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 06/12/2018] [Indexed: 12/22/2022] Open
Abstract
Distant metastasis remarkably worsens the prognoses of malignant melanoma patients. Toll-like receptors (TLRs) recognize molecules derived from many types of pathogens and activate the innate intravital immune system. In this study, we examined the effects of R848, a TLR7 ligand, on bone invasion by malignant melanoma cells. Mice underwent transplantation with cells of a malignant melanoma cell line B16F10, and were also administered R848 every three days. Hindlimbs were obtained 13 days after transplantation and invasion of bone marrow by B16F10 cells was evaluated. ELISA was used to determine the concentrations of cytokines in mouse serum and in the culture medium from bone marrow macrophages (BMMs) in the presence or absence of R848. In addition, MTS assays were used to examine the effects of media from BMM cultures on the proliferation of B16F10 cells. The rate of infiltration by B16F10 cells and the area of invasion were significantly reduced with R848 administration. Furthermore, serum levels of IL-6, IL-12, and IFN-γ were significantly increased in mice administered R848, with the same trend observed in the culture medium of BMMs treated with R848. In addition, B16F10 cell proliferation was suppressed by the addition of medium from cultured BMMs treated with R848. Neutralization by antibodies against IL-6, IL-12, and IFN-γ abrogated the suppression of proliferation of B16F10 cells by culture medium from BMMs treated with R848. Our results suggest that R848 drives the production of IL-6, IL-12, and IFN-γ in BMMs, which reduces proliferation and bone invasion by B16F10 cells.
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Affiliation(s)
- Yoko Manome
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan.,Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, Showa University Dental Hospital, Shinagawa, Tokyo, Japan
| | - Dai Suzuki
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Ayako Mochizuki
- Departments of Oral Physiology School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Emi Saito
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan.,Department of Orthopedic Surgery School of Medicine, Showa University, Shinagawa, Tokyo, Japan
| | - Kiyohito Sasa
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Kentaro Yoshimura
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Tomio Inoue
- Departments of Oral Physiology School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Masamichi Takami
- Departments of Pharmacology School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Katsunori Inagaki
- Department of Orthopedic Surgery School of Medicine, Showa University, Shinagawa, Tokyo, Japan
| | - Takahiro Funatsu
- Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, Showa University Dental Hospital, Shinagawa, Tokyo, Japan
| | - Ryutaro Kamijo
- Departments of Biochemistry School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
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25
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Kadotani H, Takami M, Nishikawa K, Sumi Y, Nakabayashi T, Fujii Y, Matsuo M, Yamada N. 0354 Insomnia Is Associated With Presenteeism In Japanese City Government Employees. Sleep 2018. [DOI: 10.1093/sleep/zsy061.353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Kadotani
- Shiga University of Medical Science, Otsu, JAPAN
| | - M Takami
- Shiga University of Medical Science, Otsu, JAPAN
| | | | - Y Sumi
- Department of Psychiatry, Shiga University of Medical Science, Seta, JAPAN
| | - T Nakabayashi
- Department of Psychiatry, Shiga University of Medical Science, Seta, JAPAN
| | - Y Fujii
- Department of Psychiatry, Shiga University of Medical Science, Seta, JAPAN
| | - M Matsuo
- Department of Psychiatry, Shiga University of Medical Science, Seta, JAPAN
| | - N Yamada
- Department of Psychiatry, Shiga University of Medical Science, Seta, JAPAN
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26
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Minamide A, Yoshida M, Simpson AK, Nakagawa Y, Iwasaki H, Tsutsui S, Takami M, Hashizume H, Yukawa Y, Yamada H. Minimally invasive spinal decompression for degenerative lumbar spondylolisthesis and stenosis maintains stability and may avoid the need for fusion. Bone Joint J 2018; 100-B:499-506. [PMID: 29629597 DOI: 10.1302/0301-620x.100b4.bjj-2017-0917.r1] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aims The aim of this study was to investigate the clinical and radiographic outcomes of microendoscopic laminotomy in patients with lumbar stenosis and concurrent degenerative spondylolisthesis (DS), and to determine the effect of this procedure on spinal stability. Patients and Methods A total of 304 consecutive patients with single-level lumbar DS with concomitant stenosis underwent microendoscopic laminotomy without fusion between January 2004 and December 2010. Patients were divided into two groups, those with and without advanced DS based on the degree of spondylolisthesis and dynamic instability. A total of 242 patients met the inclusion criteria. There were 101 men and 141 women. Their mean age was 68.1 years (46 to 85). Outcome was assessed using the Japanese Orthopaedic Association and Roland Morris Disability Questionnaire scores, a visual analogue score for pain and the Short Form Health-36 score. The radiographic outcome was assessed by measuring the slip and the disc height. The clinical and radiographic parameters were evaluated at a mean follow-up of 4.6 years (3 to 7.5). Results There were no significant differences in the preoperative measurements between the group and no significant differences between the clinical parameters at the final follow-up. The mean percentage slip was 17.1% preoperatively and 17.7% at the final follow-up (p = 0.35). Progressive instability was noted in 13 patients (8.2%) with DS and 6 patients (7.0%) with advanced DS, respectively (p = 0.81). There was radiological evidence of restabilization of the spine in 30 patients (35%) with preoperative instability. The success rate of microendoscopic laminotomy was good/excellent in 166 (69%), fair in 49 (20%) and poor in 27 patients (11%) in both groups. Conclusion Microendoscopic laminotomy is an effective form of surgical treatment for patients with DS and stenosis. Preservation of the stabilizing structures using this technique prevents postoperative instability. Cite this article: Bone Joint J 2018;100-B:499-506.
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Affiliation(s)
- A Minamide
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - M Yoshida
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - A K Simpson
- Microendoscopic Spine Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Y Nakagawa
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - H Iwasaki
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - S Tsutsui
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - M Takami
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - H Hashizume
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - Y Yukawa
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
| | - H Yamada
- Department of Orthopaedic Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8510, Japan
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27
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Sasaki S, Tsukamoto M, Saito M, Hojyo S, Fukada T, Takami M, Furuichi T. Disruption of the mouse Slc39a14 gene encoding zinc transporter ZIP14 is associated with decreased bone mass, likely caused by enhanced bone resorption. FEBS Open Bio 2018; 8:655-663. [PMID: 29632817 PMCID: PMC5881542 DOI: 10.1002/2211-5463.12399] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 11/28/2022] Open
Abstract
Osteoclasts are bone‐resorbing cells that play an essential role in maintaining bone homeostasis. Zinc (Zn) has been reported to inhibit osteoclast‐mediated bone resorption, but the mechanism of this action has not been clarified. Zn homeostasis is tightly controlled by the coordinated actions of many Zn transporters. The Zn transporter ZIP14/Slc39a14 is involved in various physiological functions; hence, Zip14‐knockout (KO) mice exhibit multiple phenotypes. In this study, we thoroughly investigated the bone phenotypes of Zip14‐KO mice, demonstrating that the KO mice exhibited osteopenia in both trabecular and cortical bones. In Zip14‐KO mice, bone resorption was increased, whereas the bone formation rate was unchanged. Zip14mRNA was expressed in normal osteoclasts both in vivo and in vitro, but receptor activator of NF‐κB ligand (RANKL)‐induced osteoclastogenesis was not impaired in bone marrow‐derived macrophages prepared from Zip14‐KO mice. These results suggest that ZIP14 regulates bone homeostasis by inhibiting bore resorption and that in Zip14‐KO mice, bone resorption is increased due to the elimination of this inhibitory regulation. Further studies are necessary to conclude whether the enhancement of bone resorption in Zip14‐KO mice is due to a cell‐autonomous or a non‐cell‐autonomous osteoclast defect.
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Affiliation(s)
- Sun Sasaki
- Laboratory of Laboratory Animal Science and Medicine, Co-Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Manami Tsukamoto
- Laboratory of Laboratory Animal Science and Medicine, Co-Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masaki Saito
- Laboratory of Laboratory Animal Science and Medicine, Co-Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Shintaro Hojyo
- Osteoimmunology, Deutsches Rheuma-Forschungszentrum, Berlin, Germany
| | - Toshiyuki Fukada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, okushima, Japan.,Department of Pathology, School of Dentistry, Showa University, Tokyo, Japan.,RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, Japan
| | - Tatsuya Furuichi
- Laboratory of Laboratory Animal Science and Medicine, Co-Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan.,Department of Basic Veterinary Science, United Graduate School of Veterinary Science, Gifu University, Gifu, Japan
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28
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Kuritani M, Sakai N, Karakawa A, Isawa M, Chatani M, Negishi-Koga T, Funatsu T, Takami M. Anti-mouse RANKL Antibodies Inhibit Alveolar Bone Destruction in Periodontitis Model Mice. Biol Pharm Bull 2018; 41:637-643. [DOI: 10.1248/bpb.b18-00026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Miku Kuritani
- Department of Pharmacology, School of Dentistry, Showa University
- Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University
| | - Akiko Karakawa
- Department of Pharmacology, School of Dentistry, Showa University
| | - Motoki Isawa
- Department of Pharmacology, School of Dentistry, Showa University
- Department of Pediatric Dentistry, School of Dentistry, Showa University
| | - Masahiro Chatani
- Department of Pharmacology, School of Dentistry, Showa University
| | | | - Takahiro Funatsu
- Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University
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29
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Kadotani H, Takami M, Nishikawa K, Masahiro M, Naoto Y. Relationship between absenteeism/presenteeism and weekday sleep debt in government employees of a Japanese city. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Kuriyama K, Suzuki M, Kadotani H, Yoshinaka H, Yamanaka M, Omori T, Mori A, Tsuboi H, Ueda T, Kashiwagi K, Yoshimura A, Yoshiike T, Takahashi M, Matsuo M, Morita S, Takami M, Fujii Y, Nakabayashi T, Yoshida M, Kutsumi H, Uchiyama M, Yamada N. A research project aimed at developing practical use of sleep EEG for diagnosis of major depressive disorder: multicenter exploratory prospective study. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Shibata H, Kijima Y, Nagoshi R, Takami M, Kozuki A, Fujiwara R, Mochizuki Y, Nakano S, Fukuyama Y, Kakizaki S, Fujimoto D, Kurimoto H, Masuko E, Shite J. 5712Clinical outcome of very severe calcified lesions guided by optical coherence tomography. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Shibata H, Kijima Y, Nagoshi R, Takami M, Kozuki A, Fujiwara R, Mochizuki Y, Nakano S, Fukuyama Y, Kakizaki S, Fujimoto D, Kurimoto H, Masuko E, Shite J. 5708Incidence and predictors of target lesion revascularization in lesions with moderate to severe calcification which underwent percutaneous coronary intervention guided by optical coherence tomography. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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33
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Okamatsu N, Sakai N, Karakawa A, Kouyama N, Sato Y, Inagaki K, Kiuchi Y, Oguchi K, Negishi-Koga T, Takami M. Biological effects of anti-RANKL antibody administration in pregnant mice and their newborns. Biochem Biophys Res Commun 2017; 491:614-621. [PMID: 28760341 DOI: 10.1016/j.bbrc.2017.07.154] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 07/27/2017] [Indexed: 12/11/2022]
Abstract
Denosumab, a fully human monoclonal antibody that neutralizes receptor activator of nuclear factor-κB ligand (RANKL) and blocks osteoclast differentiation, has received approval in Japan for use as an anti-resorptive drug for osteoporosis and skeletal-related events (SREs) in patients with solid cancer. Denosumab is contraindicated during pregnancy, though the effects of blocking RANKL activity on pregnant mothers and their newborns are unclear. We used mice to investigate the effects of an anti-RANKL antibody on maternal and newborn health. Mothers injected with the anti-RANKL antibody had increased bone mass as compared with the controls, while osteoclast number and the level of tartrate-resistant acid phosphatase (TRAP) in serum were increased at the end of pregnancy. Newborn mice exposed to the antibody in utero were normally born, but showed increased bone mass and died within 48 h after birth. None of the newborns were found to have milk in their stomachs, suggesting that they died due to a maternal defect in lactation. Consistent with this, anti-RANKL antibody-injected mothers displayed impaired mammary gland development. However, fostering by healthy surrogate mothers rescued only 33% of the antibody-exposed newborns, suggesting that neonatal mortality was due, at least in part, to an intrinsic defect in the newborns. Our findings show that anti-RANKL antibody administration during pregnancy results in not only an undesirable increase in bone mass, but also has harmful effects on newborn survival.
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Affiliation(s)
- Nobuaki Okamatsu
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Nobuhiro Sakai
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Akiko Karakawa
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Naoka Kouyama
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Yurie Sato
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Katsunori Inagaki
- Department of Orthopaedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Katsuji Oguchi
- Department of Pharmacology, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Takako Negishi-Koga
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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Enomoto T, Takami M, Yamamoto M, Kamijo R. LPS administration increases CD11b + c-Fms + CD14 + cell population that possesses osteoclast differentiation potential in mice. Cytotechnology 2017; 69:529-537. [PMID: 28429166 DOI: 10.1007/s10616-017-0094-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/04/2017] [Indexed: 01/09/2023] Open
Abstract
Osteoclasts are multinucleated giant cells that originate from a monocyte/macrophage lineage, and are involved in the inflammatory bone destruction accompanied by periodontitis. Recent studies have shown that osteoclast precursors reside not only in the bone marrow, but also in the peripheral blood and spleen, though the precise characteristics of each precursor have not been analyzed. We hypothesized that the number of osteoclast precursors in those tissues may increase under pathological conditions and contribute to osteoclast formation in vivo in a mouse model. To test this hypothesis, we attempted to identify cell populations that possess osteoclast differentiation potential in the bone marrow, spleen, and blood by analyzing macrophage/monocyte-related cell surface markers such as CD11b, CD14, and colony-stimulating factor-1 receptor (c-Fms). In the bone marrow, the CD11b- cell population, but not the CD11b+ cell population, differentiated into osteoclasts in the presence of receptor activator of nuclear factor-κB ligand and macrophage colony-stimulating factor. On the other hand, in the spleen and blood, CD11b+ cells differentiated into osteoclasts. Interestingly, lipopolysaccharide (LPS) administration to the mice dramatically increased the proportion of CD11b+ c-Fms+ CD14+ cells, which differentiated into osteoclasts, in the bone marrow and spleen. These results suggest that LPS administration increases the proportion of a distinct cell population expressing CD11b+, c-Fms+, and CD14+ in the bone marrow and spleen. Thus, these cell populations are considered to contribute to the increase in osteoclast number during inflammatory bone destruction such as periodontitis.
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Affiliation(s)
- Takuya Enomoto
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
- Department of Periodontology, Showa University Dental Hospital, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Masamichi Takami
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
- Department of Dental Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
| | - Matsuo Yamamoto
- Department of Periodontology, Showa University Dental Hospital, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
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Urano-Morisawa E, Takami M, Suzawa T, Matsumoto A, Osumi N, Baba K, Kamijo R. Induction of osteoblastic differentiation of neural crest-derived stem cells from hair follicles. PLoS One 2017; 12:e0174940. [PMID: 28384239 PMCID: PMC5383073 DOI: 10.1371/journal.pone.0174940] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/17/2017] [Indexed: 12/12/2022] Open
Abstract
The neural crest (NC) arises near the neural tube during embryo development. NC cells migrate throughout the embryo and have potential to differentiate into multiple cell types, such as peripheral nerves, glial, cardiac smooth muscle, endocrine, and pigment cells, and craniofacial bone. In the present study, we induced osteoblast-like cells using whisker follicles obtained from the NC of mice. Hair follicle cells derived from the NC labeled with enhanced green fluorescent protein (EGFP) were collected from protein zero-Cre/floxed-EGFP double transgenic mice and cultured, then treated and cultured in stem cell growth medium. After growth for 14 days, results of flow cytometry analysis showed that 95% of the EGFP-positive (EGFP+) hair follicle cells derived from the NC had proliferated and 76.2% of those expressed mesenchymal stem cells markers, such as platelet-derived growth factor α and stem cell antigen-1, and also showed constitutive expression of Runx2 mRNA. Cells stimulated with bone morphogenetic protein-2 expressed osteocalcin, osterix, and alkaline phosphatase mRNA, resulting in production of mineralized matrices, which were detected by von Kossa and alizarin red staining. Moreover, EGFP+ hair follicle cells consistently expressed macrophage colony-stimulating factor and osteoprotegerin (OPG). Addition of 1α,25-dihydroxyvitamin D3 [1,25(OH)2D3] (10-8 M) to the cultures suppressed OPG expression and induced RANKL production in the cells. Furthermore, multinucleated osteoclasts appeared within 6 days after starting co-cultures of bone marrow cells with EGFP+ cells in the presence of 1,25(OH)2D3 and PGE2. These results suggest that NC-derived hair follicle cells possess a capacity for osteoblastic differentiation and may be useful for developing new bone regenerative medicine therapies.
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Affiliation(s)
- Eri Urano-Morisawa
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan
- Department of Prosthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Masamichi Takami
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan
- Department of Pharmacology, School of Dentistry, Showa University, Tokyo, Japan
- * E-mail:
| | - Tetsuo Suzawa
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan
| | - Akifumi Matsumoto
- Department of Prosthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Noriko Osumi
- Division of Developmental Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuyoshi Baba
- Department of Prosthodontics, School of Dentistry, Showa University, Tokyo, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, Tokyo, Japan
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Yu J, Yun H, Shin B, Kim Y, Park ES, Choi S, Yu J, Amarasekara DS, Kim S, Inoue JI, Walsh MC, Choi Y, Takami M, Rho J. Interaction of Tumor Necrosis Factor Receptor-associated Factor 6 (TRAF6) and Vav3 in the Receptor Activator of Nuclear Factor κB (RANK) Signaling Complex Enhances Osteoclastogenesis. J Biol Chem 2016; 291:20643-60. [PMID: 27507811 DOI: 10.1074/jbc.m116.728303] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Indexed: 12/14/2022] Open
Abstract
The signaling pathway downstream of stimulation of receptor activator of nuclear factor κB (RANK) by RANK ligand is crucial for osteoclastogenesis. RANK recruits TNF receptor-associated factor 6 (TRAF6) to TRAF6-binding sites (T6BSs) in the RANK cytoplasmic tail (RANKcyto) to trigger downstream osteoclastogenic signaling cascades. RANKcyto harbors an additional highly conserved domain (HCR) that also activates crucial signaling during RANK-mediated osteoclastogenesis. However, the functional cross-talk between T6BSs and the HCR in the RANK signaling complex remains unclear. To characterize the cross-talk between T6BSs and the HCR, we screened TRAF6-interacting proteins using a proteomics approach. We identified Vav3 as a novel TRAF6 binding partner and evaluated the functional importance of the TRAF6-Vav3 interaction in the RANK signaling complex. We demonstrated that the coiled-coil domain of TRAF6 interacts directly with the Dbl homology domain of Vav3 to form the RANK signaling complex independent of the TRAF6 ubiquitination pathway. TRAF6 is recruited to the RANKcyto mutant, which lacks T6BSs, via the Vav3 interaction; conversely, Vav3 is recruited to the RANKcyto mutant, which lacks the IVVY motif, via the TRAF6 interaction. Finally, we determined that the TRAF6-Vav3 interaction resulting from cross-talk between T6BSs and the IVVY motif in RANKcyto enhances downstream NF-κB, MAPK, and NFATc1 activation by further strengthening TRAF6 signaling, thereby inducing RANK-mediated osteoclastogenesis. Thus, Vav3 is a novel TRAF6 interaction partner that functions in the activation of cooperative signaling between T6BSs and the IVVY motif in the RANK signaling complex.
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Affiliation(s)
- Jiyeon Yu
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Hyeongseok Yun
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Bongjin Shin
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Yongjin Kim
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Eui-Soon Park
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Seunga Choi
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Jungeun Yu
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | | | - Sumi Kim
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea
| | - Jun-Ichiro Inoue
- the Division of Cellular and Molecular Biology, Department of Cancer Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Matthew C Walsh
- the Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, and
| | - Yongwon Choi
- the Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, and
| | - Masamichi Takami
- the Department of Biochemistry, School of Dentistry, Showa University, Shinagawaku, 142-8555, Japan
| | - Jaerang Rho
- From the Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 305-764, Korea,
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37
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Saito E, Suzuki D, Kurotaki D, Mochizuki A, Manome Y, Suzawa T, Toyoshima Y, Ichikawa T, Funatsu T, Inoue T, Takami M, Tamura T, Inagaki K, Kamijo R. Down-regulation of Irf8 by Lyz2-cre/loxP accelerates osteoclast differentiation in vitro. Cytotechnology 2016; 69:443-450. [PMID: 27502007 PMCID: PMC5461233 DOI: 10.1007/s10616-016-0013-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 07/20/2016] [Indexed: 12/21/2022] Open
Abstract
Interferon regulatory factor 8 (Irf8) is a transcription factor that negatively regulates osteoclast differentiation and Irf8 global knockout (Irf8−/−) mice have been shown to have reduced bone volume resulting from increased osteoclast numbers. However, detailed analysis of the functions of Irf8 in osteoclast precursors with a monocyte/macrophage linage is difficult, because the population and properties of hematopoietic cells in Irf8−/− mice are severely altered. Therefore, to clearly elucidate the functions of Irf8 during osteoclastogenesis, we established myeloid cell-specific Irf8 conditional knockout (Irf8fl/fl;Lyz2cre/+) mice. We found that trabecular bone volume in the Irf8fl/fl;Lyz2cre/+ mice was not significantly affected, while exposure to M-CSF and RANKL significantly increased TRAP activity in vitro in osteoclasts that underwent osteoclastogenesis from bone marrow-derived macrophages (BMMs) induced from bone marrow cells (BMCs) of those mice by addition of M-CSF. Our results also showed that expression of Irf8 mRNA and protein in BMMs obtained from Irf8fl/fl;Lyz2cre/+ mice and cultured with M-CSF was reduced. These findings predicted that Lyz2/Lyz2-cre expression is induced when BMCs differentiate into BMMs in cultures with M-CSF. In osteoclast differentiation cultures, Lyz2 was gradually increased by M-CSF during the first 3 days of culture, then rapidly decreased by the addition of RANKL with M-CSF during the next 3 days. Furthermore, BMCs differentiated into osteoclasts while maintaining a low level of Lyz2 expression when cultured simultaneously with both M-CSF and RANKL from the initiation of culture. These findings suggest that Lyz2-cre expression is induced along with differentiation to BMMs by BMCs obtained from Irf8fl/fl;Lyz2cre/+ mice and cultured with M-CSF. In addition, Irf8 was down-regulated by activation of the cre/loxP recombination system in BMMs and osteoclastogenesis was accelerated. Based on our results, we propose the existence in vivo of a new lineage of osteoclast precursors among BMCs, which differentiate into osteoclasts without up-regulation of Lyz2 expression.
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Affiliation(s)
- Emi Saito
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
- Department of Orthopedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Dai Suzuki
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan.
| | - Daisuke Kurotaki
- Department of Immunology, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Ayako Mochizuki
- Department of Oral Physiology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yoko Manome
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
- Division of Dentistry for Persons with Disabilities, Department of Special Needs Dentistry, Showa University Dental Hospital, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Tetsuo Suzawa
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Yoichi Toyoshima
- Department of Orthopedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Takahiro Ichikawa
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Takahiro Funatsu
- Division of Dentistry for Persons with Disabilities, Department of Special Needs Dentistry, Showa University Dental Hospital, 2-1-1 Kitasenzoku, Ota, Tokyo, 145-8515, Japan
| | - Tomio Inoue
- Department of Oral Physiology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Tomohiko Tamura
- Department of Immunology, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Katsunori Inagaki
- Department of Orthopedic Surgery, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
| | - Ryutaro Kamijo
- Departments of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
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Hiranuma K, Yamada A, Kurosawa T, Aizawa R, Suzuki D, Saito Y, Nagahama R, Ikehata M, Tsukasaki M, Morimura N, Chikazu D, Maki K, Shirota T, Takami M, Yamamoto M, Iijima T, Kamijo R. Expression of nephronectin is enhanced by 1α,25-dihydroxyvitamin D3. FEBS Open Bio 2016; 6:914-8. [PMID: 27642554 PMCID: PMC5011489 DOI: 10.1002/2211-5463.12085] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 04/08/2016] [Accepted: 05/05/2016] [Indexed: 11/10/2022] Open
Abstract
The extracellular matrix protein nephronectin (Npnt), also called POEM, is considered to play critical roles as an adhesion molecule in development and functions of various tissues, such as the kidneys, liver, and bone. In the present study, we examined the molecular mechanism of Npnt gene expression and found that vitamin D3 (1α,25-dihydroxyvitamin D3,VD 3) strongly enhanced Npnt mRNA expression in MC3T3-E1 cells from a mouse osteoblastic cell line. The VD 3-induced increase in Npnt expression is both time- and dose-dependent and is mediated by the vitamin D receptor (VDR).
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Affiliation(s)
- Katsuhiro Hiranuma
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Department of Perioperative Medicine Division of Anesthesiology School of Dentistry Showa University Tokyo Japan
| | - Atsushi Yamada
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan
| | - Tamaki Kurosawa
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan
| | - Ryo Aizawa
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Department of Periodontology School of Dentistry Showa University Tokyo Japan
| | - Dai Suzuki
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan
| | - Yoshiro Saito
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Department of Oral and Maxillofacial Surgery School of Dentistry Showa University Tokyo Japan
| | - Ryo Nagahama
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Department of Orthodontics School of Dentistry Showa University Tokyo Japan
| | - Mikiko Ikehata
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Department of Oral and Maxillofacial Surgery Tokyo Medical University Japan
| | - Masayuki Tsukasaki
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan; Present address: Department of Immunology Graduate School of Medicine and Faculty of Medicine The University of Tokyo Hongo 7-3-1, Bunkyo-ku Tokyo 113-0033 Japan
| | - Naoko Morimura
- Brain Science Laboratory The Research Organization of Science and Technology Ritsumeikan University Kusatsu Shiga Japan
| | - Daichi Chikazu
- Department of Oral and Maxillofacial Surgery Tokyo Medical University Japan
| | - Koutaro Maki
- Department of Orthodontics School of Dentistry Showa University Tokyo Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery School of Dentistry Showa University Tokyo Japan
| | - Masamichi Takami
- Department of Pharmacology School of Dentistry Showa University Tokyo Japan
| | - Matsuo Yamamoto
- Department of Periodontology School of Dentistry Showa University Tokyo Japan
| | - Takehiko Iijima
- Department of Perioperative Medicine Division of Anesthesiology School of Dentistry Showa University Tokyo Japan
| | - Ryutaro Kamijo
- Department of Biochemistry School of Dentistry Showa University Tokyo Japan
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Suzuki H, Mochizuki A, Yoshimura K, Miyamoto Y, Kaneko K, Inoue T, Chikazu D, Takami M, Kamijo R. Bropirimine inhibits osteoclast differentiation through production of interferon-β. Biochem Biophys Res Commun 2015; 467:146-51. [PMID: 26399683 DOI: 10.1016/j.bbrc.2015.09.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/17/2015] [Indexed: 01/17/2023]
Abstract
Bropirimine is a synthetic agonist for toll-like receptor 7 (TLR7). In this study, we investigated the effects of bropirimine on differentiation and bone-resorbing activity of osteoclasts in vitro. Bropirimine inhibited osteoclast differentiation of mouse bone marrow-derived macrophages (BMMs) induced by receptor activator of nuclear factor κB ligand (RANKL) in a concentration-dependent manner. Furthermore, it suppressed the mRNA expression of nuclear factor of activated T-cells, cytoplasmic, calcineurin-dependent 1 (NFATc1), a master transcription factor for osteoclast differentiation, without affecting BMM viability. Bropirimine also inhibited osteoclast differentiation induced in co-cultures of mouse bone marrow cells (BMCs) and mouse osteoblastic UAMS-32 cells in the presence of activated vitamin D3. Bropirimine partially suppressed the expression of RANKL mRNA in UAMS-32 cells induced by activated vitamin D3. Finally, the anti-interferon-β (IFN-β) antibody restored RANKL-dependent differentiation of BMMs into osteoclasts suppressed by bropirimine. These results suggest that bropirimine inhibits differentiation of osteoclast precursor cells into osteoclasts via TLR7-mediated production of IFN-β.
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Affiliation(s)
- Hiroaki Suzuki
- Department of Biochemistry, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Ayako Mochizuki
- Department of Oral Physiology, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Kentaro Yoshimura
- Department of Biochemistry, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Yoichi Miyamoto
- Department of Biochemistry, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Kotaro Kaneko
- Department of Biochemistry, Showa University School of Dentistry, Tokyo 142-8555, Japan; Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Tomio Inoue
- Department of Oral Physiology, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Daichi Chikazu
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Masamichi Takami
- Department of Pharmacology, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, Showa University School of Dentistry, Tokyo 142-8555, Japan.
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Deisher A, Anderson S, Cusma J, Herman M, Johnson S, Lehmann H, Packer D, Parker K, Song L, Takami M, Kruse J. WE-EF-BRA-03: Catheter- Free Ablation with External Photon Radiation: Treatment Planning, Delivery Considerations, and Correlation of Effects with Delivered Dose. Med Phys 2015. [DOI: 10.1118/1.4925982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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41
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Eichhorn A, Constantinescu A, Lehmann HI, Lugenbiel P, Takami M, Richter D, Prall M, Kaderka R, Thomas D, Bert C, Packer DL, Durante M, Graeff C. SU-C-303-06: Treatment Planning Study for Non-Invasive Cardiac Arrhythmia Ablation with Scanned Carbon Ions in An Animal Model. Med Phys 2015. [DOI: 10.1118/1.4923823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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42
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Kurosawa T, Yamada A, Takami M, Suzuki D, Saito Y, Hiranuma K, Enomoto T, Morimura N, Yamamoto M, Iijima T, Shirota T, Itabe H, Kamijo R. Expression of nephronectin is inhibited by oncostatin M via both JAK/STAT and MAPK pathways. FEBS Open Bio 2015; 5:303-7. [PMID: 25905035 PMCID: PMC4404411 DOI: 10.1016/j.fob.2015.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 03/30/2015] [Accepted: 04/01/2015] [Indexed: 11/26/2022] Open
Abstract
Oncostatin M regulates nephronectin (Npnt) gene expression in a dose- and time dependent manner. Nephronectin gene expression is regulated by JAK/STAT and MAPK pathways. Down-regulation of Npnt influences inhibition of osteoblast differentiation by oncostatin M.
Nephronectin (Npnt), also called POEM, is an extracellular matrix protein considered to play critical roles as an adhesion molecule in the development and functions of various tissues, such as the kidneys, liver, and bones. In the present study, we examined the molecular mechanism of Npnt gene expression and found that oncostatin M (OSM) strongly inhibited Npnt mRNA expression in MC3T3-E1 cells from a mouse osteoblastic cell line. OSM also induced a decrease in Npnt expression in both time- and dose-dependent manners via both the JAK/STAT and MAPK pathways. In addition, OSM-induced inhibition of osteoblast differentiation was recovered by over-expression of Npnt. These results suggest that OSM inhibits Npnt expression via the JAK/STAT and MAPK pathways, while down-regulation of Npnt by OSM influences inhibition of osteoblast differentiation.
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Key Words
- BMP-2, bone morphogenetic protein-2
- ERK, extracellular signal-regulated kinase
- JAK, janus kinase
- JAK/STAT
- JNK, c-Jun N-terminal kinase
- MAM, meprin, A5 protein, and receptor protein-tyrosine phosphatase μ
- MAPK
- MAPK, mitogen-activated protein kinase
- MEF2, myocyte enhancer-binding factor 2A
- Nephronectin
- Npnt, nephronectin
- OSM, oncostatin M
- OSMR, OSM receptor
- Oncostatin M
- STAT, signal transducer and activator of transcription
- TGF-β, transforming growth factor-β
- TNF-α, tumor necrosis factor-α
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Affiliation(s)
- Tamaki Kurosawa
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan ; Division of Biological Chemistry, Department of Molecular Biology, Showa University School of Pharmacy, Shinagawa, Tokyo 142-8555, Japan
| | - Atsushi Yamada
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan
| | - Masamichi Takami
- Department of Pharmacology, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Dai Suzuki
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan
| | - Yoshiro Saito
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan ; Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Katsuhiro Hiranuma
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan ; Department of Perioperative Medicine Division of Anesthesiology, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Takuya Enomoto
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan ; Department of Periodontology, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Naoko Morimura
- Brain Science Laboratory, The Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Matsuo Yamamoto
- Department of Periodontology, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Takehiko Iijima
- Department of Perioperative Medicine Division of Anesthesiology, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Ohta, Tokyo 145-8515, Japan
| | - Hiroyuki Itabe
- Division of Biological Chemistry, Department of Molecular Biology, Showa University School of Pharmacy, Shinagawa, Tokyo 142-8555, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo 142-8555, Japan
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Matsunaga A, Takami M, Irié T, Mishima K, Inagaki K, Kamijo R. Microscopic study on resorption of β-tricalcium phosphate materials by osteoclasts. Cytotechnology 2015; 67:727-32. [PMID: 25672942 DOI: 10.1007/s10616-015-9854-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 02/04/2015] [Indexed: 11/24/2022] Open
Abstract
Sintered compounds prepared with β-tricalcium phosphate (β-TCP) are commonly used as biocompatible materials for bone regenerative medicine. Although implanted β-TCP is gradually replaced with new bone after resorption by osteoclasts, exactly how osteoclasts resorb β-TCP is not well understood. To elucidate this mechanism, we analyzed the structure of β-TCP discs on which mouse mature osteoclasts were cultured using scanning electron microscopy. We found that β-TCP was resorbed by mature osteoclasts on one side of each disc, as evidenced by the formation of multiple spine-like crystals at the exposed areas. Because osteoclasts secrete acid to resorb bone minerals, we mimicked this acidification by dipping β-TCP slices into HCl solution (pH 2.0). However, no spine-like crystals appeared even though the size of each β-TCP particle was reduced. On dentin slices, osteoclasts formed clear actin rings, which are cytoskeletal structures characteristic of bone-resorbing osteoclasts. No clear actin rings were observed in osteoclasts cultured on β-TCP slices, although small actin dots were observed. Analysis by transmission electron microscopy showed that osteoclasts attached to β-TCP particles. These results suggest that osteoclasts resorb β-TCP particles independently of clear actin ring formation.
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Affiliation(s)
- Akihiro Matsunaga
- Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo, 142-8555, Japan
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Shin B, Yu J, Park ES, Choi S, Yu J, Hwang JM, Yun H, Chung YH, Hong KS, Choi JS, Takami M, Rho J. Secretion of a truncated osteopetrosis-associated transmembrane protein 1 (OSTM1) mutant inhibits osteoclastogenesis through down-regulation of the B lymphocyte-induced maturation protein 1 (BLIMP1)-nuclear factor of activated T cells c1 (NFATc1) axis. J Biol Chem 2014; 289:35868-81. [PMID: 25359771 DOI: 10.1074/jbc.m114.589614] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Genetic mutations in osteoclastogenic genes are closely associated with osteopetrotic bone diseases. Genetic defects in OSTM1 (osteopetrosis-associated transmembrane protein 1) cause autosomal recessive osteopetrosis in humans. In particular, OSTM1 mutations that exclude the transmembrane domain might lead to the production of a secreted form of truncated OSTM1. However, the precise role of the secreted form of truncated OSTM1 remains unknown. In this study, we analyzed the functional role of truncated OSTM1 in osteoclastogenesis. Here, we showed that a secreted form of truncated OSTM1 binds to the cell surface of osteoclast (OC) precursors and inhibits the formation of multinucleated OCs through the reduction of cell fusion and survival. Truncated OSTM1 significantly inhibited the expression of OC marker genes through the down-regulation of the BLIMP1 (B lymphocyte-induced maturation protein 1)-NFATc1 (nuclear factor of activated T cells c1) axis. Finally, we demonstrated that truncated OSTM1 reduces lipopolysaccharide-induced bone destruction in vivo. Thus, these findings suggest that autosomal recessive osteopetrosis patients with an OSTM1 gene mutation lacking the transmembrane domain produce a secreted form of truncated OSTM1 that inhibits osteoclastogenesis.
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Affiliation(s)
- Bongjin Shin
- From the Department of Microbiology and Molecular Biology and
| | - Jungeun Yu
- From the Department of Microbiology and Molecular Biology and
| | - Eui-Soon Park
- From the Department of Microbiology and Molecular Biology and
| | - Seunga Choi
- From the Department of Microbiology and Molecular Biology and
| | - Jiyeon Yu
- From the Department of Microbiology and Molecular Biology and
| | - Jung Me Hwang
- From the Department of Microbiology and Molecular Biology and
| | - Hyeongseok Yun
- From the Department of Microbiology and Molecular Biology and
| | - Young-Ho Chung
- the Division of Life Science, Korea Basic Science Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Korea, and
| | - Kwan Soo Hong
- the Division of Life Science, Korea Basic Science Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Korea, and the Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea
| | - Jong-Soon Choi
- the Division of Life Science, Korea Basic Science Institute, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 305-806, Korea, and the Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea
| | - Masamichi Takami
- the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawaku 142-8555, Japan
| | - Jaerang Rho
- From the Department of Microbiology and Molecular Biology and the Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea,
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Brandt TD, McElwain MW, Turner EL, Mede K, Spiegel DS, Kuzuhara M, Schlieder JE, Wisniewski JP, Abe L, Biller B, Brandner W, Carson J, Currie T, Egner S, Feldt M, Golota T, Goto M, Grady CA, Guyon O, Hashimoto J, Hayano Y, Hayashi M, Hayashi S, Henning T, Hodapp KW, Inutsuka S, Ishii M, Iye M, Janson M, Kandori R, Knapp GR, Kudo T, Kusakabe N, Kwon J, Matsuo T, Miyama S, Morino JI, Moro-Martín A, Nishimura T, Pyo TS, Serabyn E, Suto H, Suzuki R, Takami M, Takato N, Terada H, Thalmann C, Tomono D, Watanabe M, Yamada T, Takami H, Usuda T, Tamura M. A STATISTICAL ANALYSIS OF SEEDS AND OTHER HIGH-CONTRAST EXOPLANET SURVEYS: MASSIVE PLANETS OR LOW-MASS BROWN DWARFS? ACTA ACUST UNITED AC 2014. [DOI: 10.1088/0004-637x/794/2/159] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Akiyama T, Miyamoto Y, Yoshimura K, Yamada A, Takami M, Suzawa T, Hoshino M, Imamura T, Akiyama C, Yasuhara R, Mishima K, Maruyama T, Kohda C, Tanaka K, Potempa J, Yasuda H, Baba K, Kamijo R. Porphyromonas gingivalis-derived lysine gingipain enhances osteoclast differentiation induced by tumor necrosis factor-α and interleukin-1β but suppresses that by interleukin-17A: importance of proteolytic degradation of osteoprotegerin by lysine gingipain. J Biol Chem 2014; 289:15621-30. [PMID: 24755218 DOI: 10.1074/jbc.m113.520510] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease accompanied by alveolar bone resorption by osteoclasts. Porphyromonas gingivalis, an etiological agent for periodontitis, produces cysteine proteases called gingipains, which are classified based on their cleavage site specificity (i.e. arginine (Rgps) and lysine (Kgps) gingipains). We previously reported that Kgp degraded osteoprotegerin (OPG), an osteoclastogenesis inhibitory factor secreted by osteoblasts, and enhanced osteoclastogenesis induced by various Toll-like receptor (TLR) ligands (Yasuhara, R., Miyamoto, Y., Takami, M., Imamura, T., Potempa, J., Yoshimura, K., and Kamijo, R. (2009) Lysine-specific gingipain promotes lipopolysaccharide- and active-vitamin D3-induced osteoclast differentiation by degrading osteoprotegerin. Biochem. J. 419, 159-166). Osteoclastogenesis is induced not only by TLR ligands but also by proinflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-17A, in inflammatory conditions, such as periodontitis. Although Kgp augmented osteoclastogenesis induced by TNF-α and IL-1β in co-cultures of mouse osteoblasts and bone marrow cells, it suppressed that induced by IL-17A. In a comparison of proteolytic degradation of these cytokines by Kgp in a cell-free system with that of OPG, TNF-α and IL-1β were less susceptible, whereas IL-17A and OPG were equally susceptible to degradation by Kgp. These results indicate that the enhancing effect of Kgp on cytokine-induced osteoclastogenesis is dependent on the difference in degradation efficiency between each cytokine and OPG. In addition, elucidation of the N-terminal amino acid sequences of OPG fragments revealed that Kgp primarily cleaved OPG in its death domain homologous region, which might prevent dimer formation of OPG required for inhibition of receptor activator of nuclear factor κB ligand. Collectively, our results suggest that degradation of OPG by Kgp is a crucial event in the development of osteoclastogenesis and bone loss in periodontitis.
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Affiliation(s)
- Tomohito Akiyama
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Yoichi Miyamoto
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan,
| | - Kentaro Yoshimura
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Atsushi Yamada
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Masamichi Takami
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Tetsuo Suzawa
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Marie Hoshino
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Takahisa Imamura
- the Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Chie Akiyama
- the Department of Molecular Pathology, Faculty of life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Rika Yasuhara
- the Department of Molecular Pathology, Faculty of life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Kenji Mishima
- the Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Toshifumi Maruyama
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan, the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Chikara Kohda
- the Department of Microbiology, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Kazuo Tanaka
- the Department of Microbiology, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Jan Potempa
- the Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387 Krakow, Poland, the Oral Health and Systemic Diseases Group, University of Louisville School of Dentistry, Louisville, Kentucky 40202, and
| | - Hisataka Yasuda
- the Bioindustry Division, Oriental Yeast Company Ltd., Tokyo 174-8505, Japan
| | - Kazuyoshi Baba
- the Department of Prosthodontics, School of Dentistry, Showa University, Tokyo 142-8555, Japan
| | - Ryutaro Kamijo
- From the Department of Biochemistry, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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Maruyama T, Miyamoto Y, Yamamoto G, Yamada A, Yoshimura K, Suzawa T, Takami M, Akiyama T, Hoshino M, Iwasa F, Ikumi N, Tachikawa T, Mishima K, Baba K, Kamijo R. Downregulation of carbonic anhydrase IX promotes Col10a1 expression in chondrocytes. PLoS One 2013; 8:e56984. [PMID: 23441228 PMCID: PMC3575511 DOI: 10.1371/journal.pone.0056984] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 01/21/2013] [Indexed: 11/18/2022] Open
Abstract
Carbonic anhydrase (CA) IX is a transmembrane isozyme of CAs that catalyzes reversible hydration of CO(2). While it is known that CA IX is distributed in human embryonic chondrocytes, its role in chondrocyte differentiation has not been reported. In the present study, we found that Car9 mRNA and CA IX were expressed in proliferating but not hypertrophic chondrocytes. Next, we examined the role of CA IX in the expression of marker genes of chondrocyte differentiation in vitro. Introduction of Car9 siRNA to mouse primary chondrocytes obtained from costal cartilage induced the mRNA expressions of Col10a1, the gene for type X collagen α-1 chain, and Epas1, the gene for hypoxia-responsible factor-2α (HIF-2α), both of which are known to be characteristically expressed in hypertrophic chondrocytes. On the other hand, forced expression of CA IX had no effect of the proliferation of chondrocytes or the transcription of Col10a1 and Epas1, while the transcription of Col2a1 and Acan were up-regulated. Although HIF-2α has been reported to be a potent activator of Col10a1 transcription, Epas1 siRNA did not suppress Car9 siRNA-induced increment in Col10a1 expression, indicating that down-regulation of CA IX induces the expression of Col10a1 in chondrocytes in a HIF-2α-independent manner. On the other hand, cellular cAMP content was lowered by Car9 siRNA. Furthermore, the expression of Col10a1 mRNA after Car9 silencing was augmented by an inhibitor of protein kinase A, and suppressed by an inhibitor for phosphodiesterase as well as a brominated analog of cAMP. While these results suggest a possible involvement of cAMP-dependent pathway, at least in part, in induction of Col10a1 expression by down-regulation of Car9, more detailed study is required to clarify the role of CA IX in regulation of Col10a1 expression in chondrocytes.
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Affiliation(s)
- Toshifumi Maruyama
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- Department of Prosthodontics, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Yoichi Miyamoto
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- * E-mail:
| | - Gou Yamamoto
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Atsushi Yamada
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Kentaro Yoshimura
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Tetsuo Suzawa
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Masamichi Takami
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Tomohito Akiyama
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- Department of Prosthodontics, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Marie Hoshino
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- Department of Prosthodontics, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Fuminori Iwasa
- Department of Prosthodontics, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Noriharu Ikumi
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Tetsuhiko Tachikawa
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Kenji Mishima
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Kazuyoshi Baba
- Department of Prosthodontics, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
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Mochizuki A, Takami M, Miyamoto Y, Nakamaki T, Tomoyasu S, Kadono Y, Tanaka S, Inoue T, Kamijo R. Cell adhesion signaling regulates RANK expression in osteoclast precursors. PLoS One 2012; 7:e48795. [PMID: 23139818 PMCID: PMC3490906 DOI: 10.1371/journal.pone.0048795] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 10/01/2012] [Indexed: 11/30/2022] Open
Abstract
Cells with monocyte/macrophage lineage expressing receptor activator of NF-κB (RANK) differentiate into osteoclasts following stimulation with the RANK ligand (RANKL). Cell adhesion signaling is also required for osteoclast differentiation from precursors. However, details of the mechanism by which cell adhesion signals induce osteoclast differentiation have not been fully elucidated. To investigate the participation of cell adhesion signaling in osteoclast differentiation, mouse bone marrow-derived macrophages (BMMs) were used as osteoclast precursors, and cultured on either plastic cell culture dishes (adherent condition) or the top surface of semisolid methylcellulose gel loaded in culture tubes (non-adherent condition). BMMs cultured under the adherent condition differentiated into osteoclasts in response to RANKL stimulation. However, under the non-adherent condition, the efficiency of osteoclast differentiation was markedly reduced even in the presence of RANKL. These BMMs retained macrophage characteristics including phagocytic function and gene expression profile. Lipopolysaccharide (LPS) and tumor necrosis factor –αTNF-α activated the NF-κB-mediated signaling pathways under both the adherent and non-adherent conditions, while RANKL activated the pathways only under the adherent condition. BMMs highly expressed RANK mRNA and protein under the adherent condition as compared to the non-adherent condition. Also, BMMs transferred from the adherent to non-adherent condition showed downregulated RANK expression within 24 hours. In contrast, transferring those from the non-adherent to adherent condition significantly increased the level of RANK expression. Moreover, interruption of cell adhesion signaling by echistatin, an RGD-containing disintegrin, decreased RANK expression in BMMs, while forced expression of either RANK or TNFR-associated factor 6 (TRAF6) in BMMs induced their differentiation into osteoclasts even under the non-adherent condition. These results suggest that cell adhesion signaling regulates RANK expression in osteoclast precursors.
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Affiliation(s)
- Ayako Mochizuki
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- Department of Oral Physiology, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Masamichi Takami
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
- * E-mail:
| | - Yoichi Miyamoto
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Tsuyoshi Nakamaki
- Division of Hematology, Department of Medicine, Showa University School of Medicine, Shinagawa, Tokyo, Japan
| | - Shigeru Tomoyasu
- Division of Hematology, Department of Medicine, Showa University School of Medicine, Shinagawa, Tokyo, Japan
| | - Yuho Kadono
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Tomio Inoue
- Department of Oral Physiology, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
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Tsukasaki M, Yamada A, Yoshimura K, Miyazono A, Yamamoto M, Takami M, Miyamoto Y, Morimura N, Kamijo R. Nephronectin expression is regulated by SMAD signaling in osteoblast-like MC3T3-E1 cells. Biochem Biophys Res Commun 2012; 425:390-2. [DOI: 10.1016/j.bbrc.2012.07.106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 07/19/2012] [Indexed: 12/20/2022]
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50
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Koyama T, Nakajima C, Nishimoto S, Takami M, Woo JT, Yazawa K. Suppressive effects of the leaf of Terminalia catappa L. on osteoclast differentiation in vitro and bone weight loss in vivo. J Nutr Sci Vitaminol (Tokyo) 2012; 58:129-35. [PMID: 22790571 DOI: 10.3177/jnsv.58.129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Oral administration of Terminalia catappa extract (TCE; 1,000 mg/kg) for 5 wk suppressed bone weight loss and trabecular bone loss in ovariectomized mice. An in vitro experiment showed that TCE (1.3-20 µg/mL) did not increase alkaline phosphatase activity, which would indicate osteoclast formation, in osteoblast-like 3T3-L1 cells. On the other hand, TCE (12.5 µg/mL) markedly decreased the number of tartrate resistant acid phosphatase (TRAP)-positive multinucleated cells, which would indicate osteoclast formation, in a co-culture system (bone marrow cells/osteoblastic UAMS-32 cells). A detailed analysis of the stages of osteoclast differentiation revealed that TCE mainly suppressed the differentiation of bone marrow mononuclear cells into osteoclast progenitor cells in the presence of M-CSF and TGF-β. An additional experiment using fractionated TCE revealed that the water-soluble fraction suppressed the bone weight loss in OVX-mice and osteoclast differentiation in vitro. Therefore, the suppressive effects of TCE on bone weight loss in mice might be due to the suppressive effects of highly polar components on the early stage of osteoclast differentiation.
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Affiliation(s)
- Tomoyuki Koyama
- Laboratory of Nutraceuticals and Functional Foods Science, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Tokyo 108-8477, Japan.
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