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Ma C, Yu R, Li J, Chao J, Liu P. Targeting proteostasis network in osteoporosis: Pathological mechanisms and therapeutic implications. Ageing Res Rev 2023; 90:102024. [PMID: 37532006 DOI: 10.1016/j.arr.2023.102024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 07/11/2023] [Accepted: 07/28/2023] [Indexed: 08/04/2023]
Abstract
As the most common bone disease, osteoporosis (OP) increases bone fragility and makes patients more vulnerable to the threat of osteoporotic fractures. With the ageing population in today's society, OP has become a huge and growing public health problem. Unfortunately, the clear pathogenesis of OP is still under exploration, and effective interventions are still scarce. Therefore, exploring new targets for pharmacological interventions to develop promising therapeutic drugs for OP is of great clinical value. Previous studies have shown that normal bone remodeling depends on proteostasis, whereas loss of proteostasis during ageing leads to the dysfunctional proteostasis network (PN) that fails to maintain bone homeostasis. Nevertheless, only a few studies have revealed the pathophysiological relationship between bone metabolism and a single component of PN, yet the role of PN as a whole in the pathogenesis of OP is still under investigation. This review comprehensively summarized the role of PN in the pathogenesis of OP and further discussed the potential of PN as innovative drug targets for the therapy of OP.
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Affiliation(s)
- Cong Ma
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China; Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ronghui Yu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Junhong Li
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jiashuo Chao
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Ping Liu
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China.
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Kim W, Tokuda H, Kawabata T, Fujita K, Sakai G, Nakashima D, Tachi J, Kuroyanagi G, Matsushima-Nishiwaki R, Tanabe K, Otsuka T, Iida H, Kozawa O. Enhancement by HSP90 inhibitor of PGD2-stimulated HSP27 induction in osteoblasts: Suppression of SAPK/JNK and p38 MAP kinase. Prostaglandins Other Lipid Mediat 2019; 143:106327. [PMID: 30946899 DOI: 10.1016/j.prostaglandins.2019.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 02/01/2019] [Accepted: 03/14/2019] [Indexed: 11/26/2022]
Abstract
Heat shock protein (HSP) 90 that is ubiquitously expressed in various tissues is a major molecular chaperone. We have previously demonstrated that prostaglandin D2 (PGD2), a bone remodeling factor, elicits the expression of HSP27, a small HSP, through stress-activated protein kinase/c-Jun N-terminal kinase (SAPK/JNK) and p38 mitogen-activated protein (MAP) kinase in osteoblast-like MC3T3-E1 cells. In the present study, we investigated the involvement of HSP90 in the PGD2-stimulated HSP27 induction and the underlying mechanism in MC3T3-E1 cells. Onalespib, an inhibitor of HSP90, significantly enhanced the PGD2-stimulated HSP27 induction. In addition, geldanamycin, another HSP90 inhibitor, potentiated the HSP27 induction. Both onalespib and geldanamycin markedly amplified the PGD2-induced phosphorylation of SAPK/JNK and p38 MAP kinase. SP600125, an inhibitor of SAPK/JNK, and SB203580, an inhibitor of p38 MAP kinase, suppressed the amplification by onalespib of the PGD2-stimulated HSP27 induction. These results strongly suggest that HSP90 plays a negative role in the HSP27 induction stimulated by PGD2 in osteoblasts, and that the inhibitory effect of HSP90 is mediated through the regulation of SAPK/JNK and p38 MAP kinase.
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Affiliation(s)
- Woo Kim
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Haruhiko Tokuda
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Clinical Laboratory/Biobank of Medical Genome Center, National Center for Geriatrics and Gerontology, Obu, Aichi 474-8511, Japan
| | - Tetsu Kawabata
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Kazuhiko Fujita
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Go Sakai
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Daiki Nakashima
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Junko Tachi
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Gen Kuroyanagi
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan; Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan; Department of Rehabilitation Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | | | - Kumiko Tanabe
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Takanobu Otsuka
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
| | - Hiroki Iida
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Osamu Kozawa
- Department of Pharmacology, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan.
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Kondo A, Tokuda H, Matsushima-Nishiwaki R, Kato K, Kuroyanagi G, Mizutani J, Fukuoka M, Wada I, Kozawa O, Otsuka T. Unphosphorylated heat shock protein 27 suppresses fibroblast growth factor‑2‑stimulated vascular endothelial growth factor release in osteoblasts. Mol Med Rep 2013; 8:691-5. [PMID: 23783659 DOI: 10.3892/mmr.2013.1533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 06/07/2013] [Indexed: 11/06/2022] Open
Abstract
Heat shock protein 27 (HSP27) also known as heat shock protein β1 (HSPB1) is a member of the family of small heat shock proteins ubiquitously expressed in all tissues. It has previously been demonstrated that HSP27 regulated the synthesis of osteocalcin and interleukin‑6 in osteoblast‑like MC3T3‑E1 cells. In the present study, the effect of HSP27 on basic fibroblast growth factor (FGF‑2)‑stimulated vascular endothelial growth factor (VEGF) synthesis in MC3T3‑E1 cells, was observed. The levels of VEGF release stimulated by FGF‑2 in the HSP27‑overexpressing MC3T3‑E1 cells were significantly lower compared with those in the control cells. In addition, the levels of VEGF release stimulated by FGF-2 in the phosphomimic HSP27-overexpressing cells were significantly higher compared with those in the non‑phosphorylatable HSP27‑overexpressing cells. Furthermore, no significant differences were observed in the FGF‑2‑induced phosphorylation levels of p44/p42 mitogen‑activated protein (MAP) kinase, p38 MAP kinase, stress‑activated protein kinase/c‑Jun N‑terminal kinase (SAPK/JNK) or p70 S6 kinase among the four types of transfected cells. These results suggested that unphosphorylated HSP27 attenuated the FGF‑2‑stimulated VEGF synthesis in osteoblasts.
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Affiliation(s)
- Akira Kondo
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan
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Kato K, Adachi S, Matsushima-Nishiwaki R, Minamitani C, Natsume H, Katagiri Y, Hirose Y, Mizutani J, Tokuda H, Kozawa O, Otsuka T. Regulation by heat shock protein 27 of osteocalcin synthesis in osteoblasts. Endocrinology 2011; 152:1872-82. [PMID: 21427224 DOI: 10.1210/en.2010-1062] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We have previously reported that various stimuli, including sphingosine 1-phosphate, are able to induce heat shock protein (HSP) 27 in osteoblast-like MC3T3-E1 cells. However, the precise role of HSP27 in bone metabolism has not been satisfactory clarified. In this study, we investigated the effect of HSP27 on osteocalcin synthesis induced by bone morphogenetic protein (BMP)-4 or T₃ in these cells. In MC3T3-E1 cells, pretreatment with sphingosine 1-phosphate, sodium arsenite, or heat stress caused the attenuation of osteocalcin synthesis induced by BMP-4 or T₃ with concurrent HSP27 induction. To further investigate the effect of HSP27, we established stable HSP27-transfected cells. The osteocalcin synthesis was significantly reduced in the stable HSP27-transfected MC3T3-E1 cells and normal human osteoblasts compared with empty-vector transfected cells. On the other hand, anisomycin, a p38 MAPK activator, caused the phosphorylation of HSP27 in both sphingosine 1-phosphate-stimulated untransfected MC3T3-E1 cells and HSP27-transfected MC3T3-E1 cells. An immunofluorescence microscopy study showed that the phosphorylated HSP27 induced by anisomycin concentrated perinuclearly in these cells, in which it colocalized with the endoplasmic reticulum. We also established stable mutant-HSP27-transfected cells. Osteocalcin synthesis induced by either BMP-4 or T₃ was markedly suppressed in the nonphosphorylatable HSP27-overexpressing MC3T3-E1 cells compared with the phosphomimic HSP27-overexpressing cells. In contrast, the matrix mineralization was more obvious in nonphosphorylatable HSP27-overexpressing cells than that in phosphomimic HSP27-overexpressing cells. Taken together, these results strongly suggest that unphosphorylated HSP27 has an inhibitory effect on osteocalcin synthesis, but has a stimulatory effect on mineralization, in osteoblasts.
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Affiliation(s)
- Kenji Kato
- Department of Pharmacology, Gifu University Graduate School of Medicine, Yanagido, Gifu Japan
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Giusta MS, Andrade H, Santos AV, Castanheira P, Lamana L, Pimenta AMC, Goes AM. Proteomic analysis of human mesenchymal stromal cells derived from adipose tissue undergoing osteoblast differentiation. Cytotherapy 2011; 12:478-90. [PMID: 20230220 DOI: 10.3109/14653240903580270] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND AIMS Stem cells derived from human adipose tissue (ASC) have the capacity for renewal, are easily obtained and have plasticity properties that allow them to differentiate into several cell types, including osteoblast cells. With the aim of understanding the issue of the osteogenic process and finding reliable biomarkers in cells undergoing the osteogeneic differentiation process, this work took advantage of a proteomic approach to identify proteins involved in osteogenesis. METHODS For this purpose, ASC were analyzed under three conditions: S0, in the absence of stimulation; S1, with 2 weeks of osteogenic medium stimulation; and S2, with 4 weeks of osteogenic medium stimulation. The identification of ASC was carried out by flow cytometry using antibodies specific to known undifferentiated stem cell-surface markers. Cell viability, enzymatic activity, mineral deposition, collagen structure and production and gene analyzes were evaluated for each condition. RESULTS Phenotypic modifications were observed during the in vitro osteogenic differentiation process by two-dimensional (2-D) differential image gel electrophoresis (DIGE). The proteins were identified by mass espectrometry in tandem (MS/MS) analyzes using Matrix-assisted laser desorption/ionization with TOF/TOF is a tandem mass spectrometry method where two time-of-flight mass spectrometers are used consecutively (MALDI-TOF/TOF). A total of 51 differentially expressed proteins was identified when comparing the three observed conditions. Sixteen different spots were identified in the S0 stage compared with S2, while 28 different spots were found in S2 compared with S0. S1 expressed seven different spots compared with S0 and S2. CONCLUSIONS These findings suggest the involvement of several proteins directly related to the osteogenic pathway, which can be used to improve understanding of the osteogenic process.
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Affiliation(s)
- M S Giusta
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
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Asano S, Suzuki A, Sekiguchi S, Nishiwaki-Yasuda K, Shibata M, Itoh M. Effects of prostaglandin D2 on Na-dependent phosphate transport activity and its intracellular signaling mechanism in osteoblast-like cells. Prostaglandins Leukot Essent Fatty Acids 2009; 81:247-51. [PMID: 19616422 DOI: 10.1016/j.plefa.2009.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 05/27/2009] [Accepted: 06/23/2009] [Indexed: 11/22/2022]
Abstract
Inorganic phosphate (Pi) transport probably represents an important function of bone-forming cells in relation to extracellular matrix mineralization. In the present study, we investigated the effect of prostaglandin D2 (PGD2) on Pi transport activity and its intracellular signaling mechanism in MC3T3-E1 osteoblast-like cells. PGD2 stimulated Na-dependent Pi uptake time- and dose-dependently in MC3T3-E1 cells during their proliferative phase. A protein kinase C (PKC) inhibitor calphostin C partially suppressed the stimulatory effect of PGD2 on Pi uptake. The selective inhibitors of mitogen-activated protein (MAP) kinase pathways such as ERK, p38 and Jun kinases suppressed PGD2-induced Pi uptake. The inhibitors of phosphatidylinositol (PI) 3-kinase and S6 kinase reduced this effect of PGD2, while Akt kinase inhibitor did not. These results suggest that PGD2 stimulates Na-dependent Pi transport activity in the phase of proliferation of osteoblasts. The mechanisms responsible for this effect are activation of PKC, MAP kinases, PI 3-kinase and S6 kinase.
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Affiliation(s)
- Shogo Asano
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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Engelbrecht AM, Ellis B. Apoptosis is mediated by cytosolic phospholipase A2 during simulated ischaemia/reperfusion-induced injury in neonatal cardiac myocytes. Prostaglandins Leukot Essent Fatty Acids 2007; 77:37-43. [PMID: 17643276 DOI: 10.1016/j.plefa.2007.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Accepted: 06/17/2007] [Indexed: 11/27/2022]
Abstract
It has become increasingly clear that apoptosis plays a major role in ischaemia/reperfusion (I/R)-induced cell death, but the molecular basis of this process remains to be elucidated. Therefore, the aim of this study was to investigate the role of cPLA(2) in MAPK phosphorylation and apoptosis in simulated ischaemia/reperfusion (SI/R)-induced injury in neonatal cardiomyocytes. Inhibition of cPLA(2) with AACOCF(3) significantly improved cell viability during SI/R (60.17+/-1.77 to 80.17+/-1.97%, p<0.05). The increase in cell viability was associated with a significant inhibition of p38 phosphorylation (135.3+/-4.47% to 87.94+/-10.71%, p<0.001) as well as with a significant decrease in caspase-3- (320.32+/-17.32% to 146.7+/-28.69%, p<0.01) and PARP-(263.9+/-8.15% to 154.7+/-2.24%, p<0.001) cleavage during SI/R. This study provides evidence for a role for cPLA(2) during SI/R-induced injury. It appears that p38 MAPK is a central role player in the signalling pathway involved.
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Affiliation(s)
- A-M Engelbrecht
- Department of Physiological Sciences, University of Stellenbosch, Stellenbosch, South Africa.
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