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Das AS, Basu A, Mukhopadhyay R. Ribosomal proteins: the missing piece in the inflammation puzzle? Mol Cell Biochem 2024:10.1007/s11010-024-05050-9. [PMID: 38951378 DOI: 10.1007/s11010-024-05050-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 06/09/2024] [Indexed: 07/03/2024]
Abstract
Ribosomal proteins (RPs) are constituents of macromolecular machinery, ribosome that translates genetic information into proteins. Besides ribosomal functions, RPs are now getting appreciated for their 'moonlighting'/extra-ribosomal functions modulating many cellular processes. Accumulating evidence suggests that a number of RPs are involved in inflammation. Though acute inflammation is a part of the innate immune response, uncontrolled inflammation is a driving factor for several chronic inflammatory diseases. An in-depth understanding of inflammation regulation has always been valued for the better management of associated diseases. Hence, this review first outlines the common livelihood of RPs and then provides a comprehensive account of five RPs that significantly contribute to the inflammation process. Finally, we discuss the possible therapeutic uses of RPs against chronic inflammatory diseases.
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Affiliation(s)
- Anindhya Sundar Das
- Department of Molecular Biology and Biotechnology, Tezpur University, Assam, 784028, India.
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, 02912, USA.
| | - Anandita Basu
- Department of Molecular Biology and Biotechnology, Tezpur University, Assam, 784028, India
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, Rhode Island, 02903, USA
| | - Rupak Mukhopadhyay
- Department of Molecular Biology and Biotechnology, Tezpur University, Assam, 784028, India.
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Xiong G, Xie N, Nie M, Ling R, Yun B, Xie J, Ren L, Huang Y, Wang W, Yi C, Zhang M, Xu X, Zhang C, Zou B, Zhang L, Liu X, Huang H, Chen D, Cao W, Wang C. Single-cell transcriptomics reveals cell atlas and identifies cycling tumor cells responsible for recurrence in ameloblastoma. Int J Oral Sci 2024; 16:21. [PMID: 38424060 PMCID: PMC10904398 DOI: 10.1038/s41368-024-00281-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 03/02/2024] Open
Abstract
Ameloblastoma is a benign tumor characterized by locally invasive phenotypes, leading to facial bone destruction and a high recurrence rate. However, the mechanisms governing tumor initiation and recurrence are poorly understood. Here, we uncovered cellular landscapes and mechanisms that underlie tumor recurrence in ameloblastoma at single-cell resolution. Our results revealed that ameloblastoma exhibits five tumor subpopulations varying with respect to immune response (IR), bone remodeling (BR), tooth development (TD), epithelial development (ED), and cell cycle (CC) signatures. Of note, we found that CC ameloblastoma cells were endowed with stemness and contributed to tumor recurrence, which was dominated by the EZH2-mediated program. Targeting EZH2 effectively eliminated CC ameloblastoma cells and inhibited tumor growth in ameloblastoma patient-derived organoids. These data described the tumor subpopulation and clarified the identity, function, and regulatory mechanism of CC ameloblastoma cells, providing a potential therapeutic target for ameloblastoma.
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Affiliation(s)
- Gan Xiong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Nan Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Min Nie
- Department of Periodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Rongsong Ling
- Institute for Advanced Study, Shenzhen University, Shenzhen, China
| | - Bokai Yun
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiaxiang Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Linlin Ren
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yaqi Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenjin Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Chen Yi
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xiuyun Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Caihua Zhang
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bin Zou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Leitao Zhang
- Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiqiang Liu
- Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongzhang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Demeng Chen
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Cao
- Department of Oral and Maxillofacial & Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- National Center for Stomatology, National Clinical Research Center for Oral diseases, Shanghai Key Laboratory of Stomatology, Shanghai, China.
| | - Cheng Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
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Song J, Han S, Choi S, Lee J, Jeong Y, Lee HM, Son J, Jeong DY, Yu SS, Lee W. A mixture of Pueraria lobata and Platycodon grandiflorum extracts ameliorates RANKL-induced osteoclast differentiation and ovariectomy-induced bone loss by regulating Src- PI3K-AKT and JNK/p38 signaling pathways. Heliyon 2024; 10:e24842. [PMID: 38312605 PMCID: PMC10835310 DOI: 10.1016/j.heliyon.2024.e24842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 02/06/2024] Open
Abstract
Osteoporosis is caused by increased bone resorption due to the excessive activity of osteoclasts. Pueraria lobata has demonstrated the ability to improve bone density in ovariectomized mice, and Platycodon grandiflorum can suppress osteolysis biomarkers such as collagen content in cartilage and alkaline phosphatase activity. In this study, we examined whether HX112, a mixture of Pueraria lobata and Platycodon grandiflorum extracts, could inhibit the receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-induced osteoclast differentiation to alleviate osteoporosis. To induce the differentiation of osteoclasts, RAW 264.7 cell were cultured with RANKL and HX112. Osteoclasts differentiation was evaluated by TRAP activity and TRAP staining. Bone resorption as osteoclasts major function was assessed by pit formation assay. As a result, HX112 suppressed osteoclast differentiation and bone resorptive function. Additionally, HX112 reduced the expression of osteoclastogenic genes including NFATc1 and c-Fos, and these effects of HX112 were mediated by inhibiting Src-phosphoinositide 3-kinase (PI3K)- Protein kinase B (Akt) and c-Jun N-terminal kinase (JNK)/p38 signaling pathways. Furthermore, ICR mice were ovariectomized to induce osteoporosis and bone mineral density of femur was measured using micro-CT. Consequently, oral administration of HX112 to ovariectomized mice significantly improved bone microstructure and bone mineral density. Collectively, these findings indicate that the mixed extract of Pueraria lobata and Platycodon grandiflorum may be useful as therapeutics for osteoporosis.
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Affiliation(s)
- Jisun Song
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Suhyun Han
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Sooyeon Choi
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Jungkyu Lee
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Yoonseon Jeong
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Hyun Myung Lee
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - JongDai Son
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Dam Yeon Jeong
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Seung-Shin Yu
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
| | - Wonwoo Lee
- R&D Center for Innovative Medicines, Helixmith Co., Ltd., Seoul 07794, South Korea
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Hansen MS, Søe K, Christensen LL, Fernandez-Guerra P, Hansen NW, Wyatt RA, Martin C, Hardy RS, Andersen TL, Olesen JB, Hartmann B, Rosenkilde MM, Kassem M, Rauch A, Gorvin CM, Frost M. GIP reduces osteoclast activity and improves osteoblast survival in primary human bone cells. Eur J Endocrinol 2023; 188:6987865. [PMID: 36747334 DOI: 10.1093/ejendo/lvac004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/26/2022] [Accepted: 11/19/2022] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Drugs targeting the glucose-dependent insulinotropic polypeptide (GIP) receptor (GIPR) are emerging as treatments for type-2 diabetes and obesity. GIP acutely decreases serum markers of bone resorption and transiently increases bone formation markers in short-term clinical investigations. However, it is unknown whether GIP acts directly on bone cells to mediate these effects. Using a GIPR-specific antagonist, we aimed to assess whether GIP acts directly on primary human osteoclasts and osteoblasts. METHODS Osteoclasts were differentiated from human CD14+ monocytes and osteoblasts from human bone. GIPR expression was determined using RNA-seq in primary human osteoclasts and in situ hybridization in human femoral bone. Osteoclastic resorptive activity was assessed using microscopy. GIPR signaling pathways in osteoclasts and osteoblasts were assessed using LANCE cAMP and AlphaLISA phosphorylation assays, intracellular calcium imaging and confocal microscopy. The bioenergetic profile of osteoclasts was evaluated using Seahorse XF-96. RESULTS GIPR is robustly expressed in mature human osteoclasts. GIP inhibits osteoclastogenesis, delays bone resorption, and increases osteoclast apoptosis by acting upon multiple signaling pathways (Src, cAMP, Akt, p38, Akt, NFκB) to impair nuclear translocation of nuclear factor of activated T cells-1 (NFATc1) and nuclear factor-κB (NFκB). Osteoblasts also expressed GIPR, and GIP improved osteoblast survival. Decreased bone resorption and improved osteoblast survival were also observed after GIP treatment of osteoclast-osteoblast co-cultures. Antagonizing GIPR with GIP(3-30)NH2 abolished the effects of GIP on osteoclasts and osteoblasts. CONCLUSIONS GIP inhibits bone resorption and improves survival of human osteoblasts, indicating that drugs targeting GIPR may impair bone resorption, whilst preserving bone formation.
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Affiliation(s)
- Morten S Hansen
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
- Institute of Metabolism and Systems Research (IMSR) and Centre for Diabetes, Endocrinology and Metabolism (CEDAM), University of Birmingham, Birmingham B15 2TT, United Kingdom
- Centre for Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Birmingham B15 2TT, United Kingdom
| | - Kent Søe
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Molecular Medicine, University of Southern Denmark, Odense C DK-5000, Denmark
| | - Line L Christensen
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
| | - Paula Fernandez-Guerra
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
| | - Nina W Hansen
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
| | - Rachael A Wyatt
- Institute of Metabolism and Systems Research (IMSR) and Centre for Diabetes, Endocrinology and Metabolism (CEDAM), University of Birmingham, Birmingham B15 2TT, United Kingdom
- Centre for Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Birmingham B15 2TT, United Kingdom
| | - Claire Martin
- Institute of Metabolism and Systems Research (IMSR) and Centre for Diabetes, Endocrinology and Metabolism (CEDAM), University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Rowan S Hardy
- Institute of Metabolism and Systems Research (IMSR) and Centre for Diabetes, Endocrinology and Metabolism (CEDAM), University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Thomas L Andersen
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Molecular Medicine, University of Southern Denmark, Odense C DK-5000, Denmark
| | - Jacob B Olesen
- Clinical Cell Biology, Department of Pathology, Odense University Hospital, Odense C DK-5000, Denmark
| | - Bolette Hartmann
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N DK-2200, Denmark
| | - Mette M Rosenkilde
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N DK-2200, Denmark
| | - Moustapha Kassem
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
| | - Alexander Rauch
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
- Steno Diabetes Centre Odense, Odense University Hospital, Odense C DK-5000, Denmark
| | - Caroline M Gorvin
- Institute of Metabolism and Systems Research (IMSR) and Centre for Diabetes, Endocrinology and Metabolism (CEDAM), University of Birmingham, Birmingham B15 2TT, United Kingdom
- Centre for Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Birmingham B15 2TT, United Kingdom
| | - Morten Frost
- Molecular Endocrinology Laboratory (KMEB), Department of Endocrinology, Odense University Hospital, Odense C DK-5000, Denmark
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense C DK-5000, Denmark
- Steno Diabetes Centre Odense, Odense University Hospital, Odense C DK-5000, Denmark
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Liang W, Chen Q, Cheng S, Wei R, Li Y, Yao C, Ouyang Z, Kang D, Chen A, Liu Z, Li K, Bai X, Li Q, Huang B. Skin chronological aging drives age-related bone loss via secretion of cystatin-A. NATURE AGING 2022; 2:906-922. [PMID: 37118283 DOI: 10.1038/s43587-022-00285-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 08/25/2022] [Indexed: 04/30/2023]
Abstract
Although clinical evidence has indicated an association between skin atrophy and bone loss during aging, their causal relationship and the underlying mechanisms are unknown. Here we show that premature skin aging drives bone loss in mice. We further identify that cystatin-A (Csta), a keratinocyte-enriched secreted factor, mediates the effect of skin on bone. Keratinocyte-derived Csta binds the receptor for activated C-kinase 1 in osteoblast and osteoclast progenitors, thus promoting their proliferation but inhibiting osteoclast differentiation. Csta secretion decreases with skin aging in both mice and humans, thereby causing senile osteoporosis by differentially decreasing the numbers of osteoblasts and osteoclasts. In contrast, topical application of calcipotriol stimulates Csta production in the epidermis and alleviates osteoporosis. These results reveal a mode of endocrine regulation of bone metabolism in the skin, and identify Csta as an epidermally derived hormone linking skin aging to age-related bone loss. Enhancers of skin Csta levels could serve as a potential topical drug for treatment of senile osteoporosis.
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Affiliation(s)
- Wenquan Liang
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Qingjing Chen
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Shasha Cheng
- Department of Clinical Laboratory, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Ruiming Wei
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Yuejun Li
- Department of Orthopedics, The Second People's Hospital of Panyu District, Guangzhou, China
| | - Chenfeng Yao
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Zhicong Ouyang
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Dawei Kang
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Ajuan Chen
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Zezheng Liu
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Kai Li
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, China
| | - Qingchu Li
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Bin Huang
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Department of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.
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Methyl 3,4-dihydroxybenzoate inhibits RANKL-induced osteoclastogenesis via Nrf2 signaling in vitro and suppresses LPS-induced osteolysis and ovariectomy-induced osteoporosis in vivo. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1068-1079. [PMID: 35929596 PMCID: PMC9827904 DOI: 10.3724/abbs.2022087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Osteoporosis deteriorates bone mass and biomechanical strength and is life-threatening to the elderly. In this study, we show that methyl 3,4-dihydroxybenzoate (MDHB), an antioxidant small-molecule compound extracted from natural plants, inhibits receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-induced osteoclastogenesis in vitro. Furthermore, MDHB attenuates the activation of mitogen-activated protein kinase (MAPK) and NF-κB pathways by reducing the levels of reactive oxygen species (ROS), which leads to downregulated protein expression of c-Fos and nuclear factor of activated T cells c1 (NFATc1). We also confirm that MDHB upregulates the protein expression of nuclear factor-erythroid 2-related factor 2 (Nrf2), an important transcription factor involved in ROS regulation, by inhibiting the ubiquitination-mediated proteasomal degradation of Nrf2. Next, animal experiments show that MDHB has an effective therapeutic effect on lipopolysaccharide (LPS)- and ovariectomized (OVX)-induced bone loss in mice. Our study demonstrates that MDHB can upregulate Nrf2 and suppress excessive osteoclast activity in mice to treat osteoporosis.
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7
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Ecology and evolution of dormant metastasis. Trends Cancer 2022; 8:570-582. [DOI: 10.1016/j.trecan.2022.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 12/25/2022]
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He Y, Li Z, Ding X, Xu B, Wang J, Li Y, Chen F, Meng F, Song W, Zhang Y. Nanoporous titanium implant surface promotes osteogenesis by suppressing osteoclastogenesis via integrin β1/FAKpY397/MAPK pathway. Bioact Mater 2021; 8:109-123. [PMID: 34541390 PMCID: PMC8424426 DOI: 10.1016/j.bioactmat.2021.06.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 12/13/2022] Open
Abstract
Macrophages and osteoclasts are both derived from monocyte/macrophage lineage, which plays as the osteoclastic part of bone metabolism. Although they are regulated by bone implant surface nanoarchitecture and involved in osseointegration, the beneath mechanism has not been simultaneously analyzed in a given surface model and their communication with osteoblasts is also blurring. Here, the effect of implant surface topography on monocyte/macrophage lineage osteoclastogenesis and the subsequent effect on osteogenesis are systematically investigated. The nanoporous surface is fabricated on titanium implant by etching and anodizing to get the nanotubes structure. The early bone formation around implant is significantly accelerated by the nanoporous surface in vivo. Meanwhile, the macrophage recruitment and osteoclast formation are increased and decreased respectively. Mechanistically, the integrin mediated FAK phosphorylation and its downstream MAPK pathway (p-p38) are significantly downregulated by the nanoporous surface, which account for the inhibition of osteoclastogenesis. In addition, the nanoporous surface can alleviate the inhibition of osteoclasts on osteogenesis by changing the secretion of clastokines, and accelerate bone regeneration by macrophage cytokine profiles. In conclusion, these data indicate that physical topography of implant surface is a critical factor modulating monocyte/macrophage lineage commitment, which provides theoretical guidance and mechanism basis for promoting osseointegration by coupling the osteogenesis and osteoclastogenesis. Nanoporous implant inhibits osteoclastogenesis via integrin β1/FAKpY397/MAPK. Nanoporous implant with larger diameter inhibits osteoclastogenesis more strongly. Nanoporous implant increases osteogenic cytokines of macrophages/osteoclasts.
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Affiliation(s)
- Yide He
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhe Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xin Ding
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Huaian Stomatological Hospital, Nanjing, China
| | - Boya Xu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jinjin Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yi Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Fanghao Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Fanhui Meng
- State Key Laboratory of Military Stomatology, Department of Dental Materials, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wen Song
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yumei Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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Li Z, Zhao Q, Lu Y, Zhang Y, Li L, Li M, Chen X, Sun D, Duan Y, Xu Y. DDIT4 S-Nitrosylation Aids p38-MAPK Signaling Complex Assembly to Promote Hepatic Reactive Oxygen Species Production. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101957. [PMID: 34310076 PMCID: PMC8456271 DOI: 10.1002/advs.202101957] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/31/2021] [Indexed: 05/11/2023]
Abstract
Mitogen-activated protein kinase (MAPK) signaling plays a significant role in reactive oxygen species (ROS) production. The authors have previously shown that Brahma-related gene 1 (BRG1), a chromatin remodeling protein, contributes to hepatic ROS accumulation in multiple animal and cellular models of liver injury. Here it is reported that DNA damage-induced transcript 4 (DDIT4) is identified as a direct transcriptional target for BRG1. DDIT4 overexpression overcomes BRG1 deficiency to restore ROS production whereas DDIT4 knockdown phenocopies BRG1 deficiency in suppressing ROS production in vitro and in vivo. Mechanistically, DDIT4 coordinates the assembly of the p38-MAPK signaling complex to drive ROS production in an S-nitrosylation dependent manner. Molecular docking identifies several bioactive DDIT4-inteacting compounds including imatinib, nilotinib, and nateglinide, all of which are confirmed to attenuate hepatic ROS production, dampen p38-MAPK signaling, and ameliorate liver injury by influencing DDIT4 S-nitrosylation. Importantly, positive correlation between ROS levels and BRG1/DDIT4/S-nitrosylated DDIT4 levels is detected in human liver biopsy specimens. In conclusion, the data reveal a transcription-based signaling cascade that contributes to ROS production in liver injury.
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Affiliation(s)
- Zilong Li
- Department of Hepatobiliary and Pancreatic SurgeryThe First People's Hospital of ChangzhouThe Third Affiliated Hospital of Soochow UniversityChangzhou213000China
- Key Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Translational MedicineNanjing Medical UniversityNanjing211166China
- Institute of Biomedical ResearchLiaocheng UniversityLiaocheng252000China
- State Key Laboratory of Natural MedicinesDepartment of PharmacologyChina Pharmaceutical UniversityNanjingChina
| | - Qianwen Zhao
- State Key Laboratory of Natural MedicinesDepartment of PharmacologyChina Pharmaceutical UniversityNanjingChina
| | - Yunjie Lu
- Department of Hepatobiliary and Pancreatic SurgeryThe First People's Hospital of ChangzhouThe Third Affiliated Hospital of Soochow UniversityChangzhou213000China
| | - Yangxi Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Translational MedicineNanjing Medical UniversityNanjing211166China
| | - Luyang Li
- Key Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Translational MedicineNanjing Medical UniversityNanjing211166China
| | - Min Li
- Key Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Translational MedicineNanjing Medical UniversityNanjing211166China
| | - Xuemin Chen
- Department of Hepatobiliary and Pancreatic SurgeryThe First People's Hospital of ChangzhouThe Third Affiliated Hospital of Soochow UniversityChangzhou213000China
| | - Donglin Sun
- Department of Hepatobiliary and Pancreatic SurgeryThe First People's Hospital of ChangzhouThe Third Affiliated Hospital of Soochow UniversityChangzhou213000China
| | - Yunfei Duan
- Department of Hepatobiliary and Pancreatic SurgeryThe First People's Hospital of ChangzhouThe Third Affiliated Hospital of Soochow UniversityChangzhou213000China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Translational MedicineNanjing Medical UniversityNanjing211166China
- Institute of Biomedical ResearchLiaocheng UniversityLiaocheng252000China
- State Key Laboratory of Natural MedicinesDepartment of PharmacologyChina Pharmaceutical UniversityNanjingChina
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10
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Liang X, Hou Y, Han L, Yu S, Zhang Y, Cao X, Yan J. ELMO1 Regulates RANKL-Stimulated Differentiation and Bone Resorption of Osteoclasts. Front Cell Dev Biol 2021; 9:702916. [PMID: 34381782 PMCID: PMC8350380 DOI: 10.3389/fcell.2021.702916] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/30/2021] [Indexed: 11/20/2022] Open
Abstract
Bone homeostasis is a metabolic balance between the new bone formation by osteoblasts and old bone resorption by osteoclasts. Excessive osteoclastic bone resorption results in low bone mass, which is the major cause of bone diseases such as rheumatoid arthritis. Small GTPases Rac1 is a key regulator of osteoclast differentiation, but its exact mechanism is not fully understood. ELMO and DOCK proteins form complexes that function as guanine nucleotide exchange factors for Rac activation. Here, we report that ELMO1 plays an important role in differentiation and bone resorption of osteoclasts. Osteoclast precursors derived from bone marrow monocytes (BMMs) of Elmo1–/– mice display defective adhesion and migration during differentiation. The cells also have a reduced activation of Rac1, p38, JNK, and AKT in response to RANKL stimulation. Importantly, we show that bone erosion is alleviated in Elmo1–/– mice in a rheumatoid arthritis mouse model. Taken together, our results suggest that ELMO1, as a regulator of Rac1, regulates osteoclast differentiation and bone resorption both in vitro and in vivo.
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Affiliation(s)
- Xinyue Liang
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Yafei Hou
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lijuan Han
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Shuxiang Yu
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Yunyun Zhang
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Xiumei Cao
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianshe Yan
- School of Life Sciences, Shanghai University, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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11
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Artesunate inhibits osteoclastogenesis through the miR-503/RANK axis. Biosci Rep 2021; 40:225313. [PMID: 32542308 PMCID: PMC7374274 DOI: 10.1042/bsr20194387] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/15/2020] [Accepted: 06/01/2020] [Indexed: 12/11/2022] Open
Abstract
Osteoporosis is a metabolic bone disease that is characterized by decreased bone density and strength due to excessive loss of bone protein and mineral content, which can be induced by increased osteoclast activity. Developing agents targeting osteoclast activation is considered to be the most effective method to reverse bone destruction and alleviate the pain caused by osteoporosis. MTT assay was conducted to detect the cell viability after artesunate treatment of RAW264.7 cells. TRACP staining and pit formation assays were performed to examine the TRACP-positive cells and pit-forming activity of osteoclasts. qRT-PCR and Western blot analysis were performed to assess the mRNA and protein expression levels of the osteoclastogenesis-related genes NFATc1, TRAP, and cathepsin k. The protein levels of RANK, p-Akt, p-p38, and p-ERK were examined by Western blotting. Luciferase reporter assay was conducted to determine whether miR-503 targeted RANK directly. Artesunate inhibited TRACP-positive cells and the pit-forming activity of osteoclasts. However, artesunate increased the expression of miR-503. Artesunate suppressed osteoclastogenesis-related gene expression and RANKL-induced activation of MAPKs and the AKT pathway. In addition, miR-503 inhibited RANK expression by directly targeting RANK during osteoclast differentiation. Artesunate inhibited osteoclastogenesis and osteoclast functions in vitro by regulating the miR-503/RANK axis and suppressing the MAPK and AKT pathways, which resulted in decreased expression of osteoclastogenesis-related markers.
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12
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Li N, Li X, Zheng K, Bai J, Zhang W, Sun H, Ge G, Wang W, Wang Z, Gu Y, Xue Y, Xu Y, Geng D, Zhou J. Inhibition of Sirtuin 3 prevents titanium particle-induced bone resorption and osteoclastsogenesis via suppressing ERK and JNK signaling. Int J Biol Sci 2021; 17:1382-1394. [PMID: 33867853 PMCID: PMC8040473 DOI: 10.7150/ijbs.53992] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 03/20/2021] [Indexed: 12/12/2022] Open
Abstract
Implant-derived wear particles can be phagocytosed by local macrophages, triggering an inflammatory cascade that can drive the activation and recruitment of osteoclasts, thereby inducing peri-prosthetic osteolysis. Efforts to suppress pro-inflammatory cytokine release and osteoclastsogenesis thus represent primary approaches to treating and preventing such osteolysis. Sirtuin 3 (SIRT3) is a NAD+-dependent deacetylases that control diverse metabolic processes. However, whether SIRT3 could mitigate wear debris-induced osteolysis has not been reported. Herein we explored the impact of the SIRT3 on titanium particle-induced osteolysis. Tartrate resistant acid phosphatase (TRAP) staining revealed that the inhibition of SIRT3 suppressed nuclear factor-κB ligand (RANKL)-mediated osteoclasts activation in a dose-dependent fashion. Notably, inhibition of SIRT3 also suppressed matrix metallopeptidase 9 (MMP9) and nuclear factor of activated T‐cell cytoplasmic 1 (NFATc1) expression at the mRNA and protein levels, while also inhibiting the mRNA expression of dendritic cell-specific transmembrane protein (DC-STAMP), ATPase H+ Transporting V0 Subunit D2 (Atp6v0d2), TRAP and Cathepsin K (CTSK) . In addition, inhibition of SIRT3 suppressed titanium particle-induced tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) expression and prevented titanium particle-induced osteolysis and bone loss in vivo. This inhibition of osteoclasts differentiation was found to be linked to the downregulation and reduced phosphorylation of JNK and ERK. Taken together, inhibition of SIRT3 may be a potential target for titanium particle-induced bone loss.
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Affiliation(s)
- Ning Li
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Xiaoping Li
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Kai Zheng
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Jiaxiang Bai
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Weicheng Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Houyi Sun
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Gaoran Ge
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Wei Wang
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Zhen Wang
- Department of Orthopaedics, Suzhou Kowloon Hospital Shanghai Jiao Tong University School of Medicine, Suzhou, Jiangsu 215006, China
| | - Ye Gu
- Department of Orthopedics, Soochow University Affiliated First People's, Hospital of Changshou City, Changshu, Jiangsu 215500, China
| | - Yi Xue
- Department of Orthopaedics, Changshu Hospital Affiliated to Nanjing University of Traditional Chinese Medicine, Suzhou, Jiangsu 215500, China
| | - Yaozeng Xu
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Dechun Geng
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Jun Zhou
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
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13
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Canovas B, Nebreda AR. Diversity and versatility of p38 kinase signalling in health and disease. Nat Rev Mol Cell Biol 2021; 22:346-366. [PMID: 33504982 PMCID: PMC7838852 DOI: 10.1038/s41580-020-00322-w] [Citation(s) in RCA: 253] [Impact Index Per Article: 84.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2020] [Indexed: 02/06/2023]
Abstract
The ability of cells to deal with different types of stressful situations in a precise and coordinated manner is key for survival and involves various signalling networks. Over the past 25 years, p38 kinases — in particular, p38α — have been implicated in the cellular response to stress at many levels. These span from environmental and intracellular stresses, such as hyperosmolarity, oxidative stress or DNA damage, to physiological situations that involve important cellular changes such as differentiation. Given that p38α controls a plethora of functions, dysregulation of this pathway has been linked to diseases such as inflammation, immune disorders or cancer, suggesting the possibility that targeting p38α could be of therapeutic interest. In this Review, we discuss the organization of this signalling pathway focusing on the diversity of p38α substrates, their mechanisms and their links to particular cellular functions. We then address how the different cellular responses can be generated depending on the signal received and the cell type, and highlight the roles of this kinase in human physiology and in pathological contexts. p38α — the best-characterized member of the p38 kinase family — is a key mediator of cellular stress responses. p38α is activated by a plethora of signals and functions through a multitude of substrates to regulate different cellular behaviours. Understanding context-dependent p38α signalling provides important insights into p38α roles in physiology and pathology.
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Affiliation(s)
- Begoña Canovas
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Angel R Nebreda
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain. .,ICREA, Barcelona, Spain.
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14
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Gutiérrez-Hernández JM, Castorena-Alejandro C, Pozos-Guillén A, Toriz-González G, Flores H, Escobar-García DM. Gene expression profile involved in signaling and apoptosis of osteoblasts in contact with cellulose/MWCNTs scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111531. [PMID: 33255084 DOI: 10.1016/j.msec.2020.111531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/16/2020] [Accepted: 09/11/2020] [Indexed: 12/14/2022]
Abstract
The aim of this work was to evaluate the expression profile of genes involved in signaling, intracellular and extracellular Ca+2 concentration and apoptosis pathways of osteoblasts in contact with a scaffold made of a composite of BCN/MWCNTs. Osteoblasts were cultivated on BCN, MWCNTs and their mixtures. Osteoblast RNA was extracted for sintering cDNA to amplify genes of interest by PCR; intra- and extracellular calcium (Ca2+) was also quantified. Regarding the genes that participate in the regulation paths (MAPK and NF-KB), it was found that only the expression of NF-KB was affected in all treatments. The expression of VEGFA increased, except in the treatment of high concentration of MWCNTs, where remained unchanged. The expression of genes Apaf-1 and Bcl-2/Bax and TP53 increased as compared to the control (except for TP53 in BC and C1/MWCNTs) indicating that cells are responding to the presence of BCN-MWCNTs composites scaffolds. The results suggest that osteoblast developed a modification in the expression profile of genes that actively participate in cellular processes such as proliferation, vasculogenesis and apoptosis, which may be modulated by the increase of intra- and extracellular Ca2+ concentration.
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Affiliation(s)
| | - Claudia Castorena-Alejandro
- Basic Sciences Laboratory, Faculty of Dentistry, Autonomous University of San Luis Potosi, 78290 SLP, Mexico
| | - Amaury Pozos-Guillén
- Basic Sciences Laboratory, Faculty of Dentistry, Autonomous University of San Luis Potosi, 78290 SLP, Mexico
| | - Guillermo Toriz-González
- Department of Wood, Cellulose and Paper Research, University of Guadalajara, 45110 Guadalajara, Mexico; Transdisciplinar Institute for Research and Services, University of Guadalajara, 45150 Guadalajara, Mexico
| | - Héctor Flores
- Basic Sciences Laboratory, Faculty of Dentistry, Autonomous University of San Luis Potosi, 78290 SLP, Mexico
| | - Diana María Escobar-García
- Basic Sciences Laboratory, Faculty of Dentistry, Autonomous University of San Luis Potosi, 78290 SLP, Mexico.
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15
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Tang RH, Yang J, Fei J. New perspectives on traumatic bone infections. Chin J Traumatol 2020; 23:314-318. [PMID: 32847694 PMCID: PMC7718542 DOI: 10.1016/j.cjtee.2020.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 02/04/2023] Open
Abstract
In this paper, we review the results of previous studies and summarize the effects of various factors on the regulation of bone metabolism in traumatic bone infections. Infection-related bone destruction incorporates pathogens and iatrogenic factors in the process of bone resorption dominated by the skeletal and immune systems. The development of bone immunology has established a bridge of communication between the skeletal system and the immune system. Exploring the effects of pathogens, skeletal systems, immune systems, and antibacterials on bone repair in infectious conditions can help improve the treatment of these diseases.
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Affiliation(s)
- Ruo-Hui Tang
- Health Team of 96824 Troops of the Chinese People's Liberation Army, Kunming, China
| | - Jing Yang
- Emergency Department, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jun Fei
- Emergency Department, Daping Hospital, Third Military Medical University, Chongqing, China,State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China,Corresponding author. Emergency Department, Daping Hospital, Third Military Medical University, Chongqing, China.
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16
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Proteomics of regenerated tissue in response to a titanium implant with a bioactive surface in a rat tibial defect model. Sci Rep 2020; 10:18493. [PMID: 33116264 PMCID: PMC7595204 DOI: 10.1038/s41598-020-75527-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 10/07/2020] [Indexed: 12/21/2022] Open
Abstract
Due to their excellent mechanical and biocompatibility properties, titanium-based implants are successfully used as biomedical devices. However, when new bone formation fails for different reasons, impaired fracture healing becomes a clinical problem and affects the patient's quality of life. We aimed to design a new bioactive surface of titanium implants with a synergetic PEG biopolymer-based composition for gradual delivery of growth factors (FGF2, VEGF, and BMP4) during bone healing. The optimal architecture of non-cytotoxic polymeric coatings deposited by dip coating under controlled parameters was assessed both in cultured cells and in a rat tibial defect model (100% viability). Notably, the titanium adsorbed polymer matrix induced an improved healing process when compared with the individual action of each biomolecules. High-performance mass spectrometry analysis demonstrated that recovery after a traumatic event is governed by specific differentially regulated proteins, acting in a coordinated response to the external stimulus. Predicted protein interactions shown by STRING analysis were well organized in hub-based networks related with response to chemical, wound healing and response to stress pathways. The proposed functional polymer coatings of the titanium implants demonstrated the significant improvement of bone healing process after injury.
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17
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Liu Y, Dou Y, Yan L, Yang X, He B, Kong L, Smith W. The role of Rho GTPases' substrates Rac and Cdc42 in osteoclastogenesis and relevant natural medicinal products study. Biosci Rep 2020; 40:BSR20200407. [PMID: 32578854 PMCID: PMC7364480 DOI: 10.1042/bsr20200407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 05/07/2020] [Accepted: 06/23/2020] [Indexed: 12/30/2022] Open
Abstract
Recently, Rho GTPases substrates include Rac (Rac1 and Rac2) and Cdc42 that have been reported to exert multiple cellular functions in osteoclasts, the most prominent of which includes regulating the dynamic actin cytoskeleton rearrangements. In addition, natural products and their molecular frameworks have a long tradition as valuable starting points for medicinal chemistry and drug discovery. Although currently, there are reports about the natural product, which could play a therapeutic role in bone loss diseases (osteoporosis and osteolysis) through the regulation of Rac1/2 and Cdc42 during osteoclasts cytoskeletal structuring. There have been several excellent studies for exploring the therapeutic potentials of various natural products for their role in inhibiting cancer cells migration and function via regulating the Rac1/2 and Cdc42. Herein in this review, we try to focus on recent advancement studies for extensively understanding the role of Rho GTPases substrates Rac1, Rac2 and Cdc42 in osteoclastogenesis, as well as therapeutic potentials of natural medicinal products for their properties on the regulation of Rac1, and/or Rac2 and Cdc42, which is in order to inspire drug discovery in regulating osteoclastogenesis.
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Affiliation(s)
- Yuan Liu
- Department of Spine Surgery, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, Xi'an, China
- Department of Orthopedics, Yan’an University Medical School, Yan’an, China
| | - Yusheng Dou
- Department of Shoulder and Elbow Joint, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, China
| | - Liang Yan
- Department of Spine Surgery, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, Xi'an, China
| | - Xiaobin Yang
- Department of Spine Surgery, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, Xi'an, China
| | - Baorong He
- Department of Spine Surgery, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, Xi'an, China
| | - Lingbo Kong
- Department of Spine Surgery, Honghui Hospital, School of Medicine, Xi’an Jiaotong University, Xi'an, China
| | - Wanli Smith
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, U.S.A
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18
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Wang F, Zhang J, Ke X, Peng W, Zhao G, Peng S, Xu J, Xu B, Cui H. WDR5-Myc axis promotes the progression of glioblastoma and neuroblastoma by transcriptional activating CARM1. Biochem Biophys Res Commun 2020; 523:699-706. [PMID: 31948749 DOI: 10.1016/j.bbrc.2019.12.101] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 12/21/2019] [Indexed: 02/04/2023]
Abstract
The WD repeat domain 5 (WDR5), also known as SWD3 and BIG-3, is often overexpressed in cancers, however its molecular function in cancer remains to be elucidated. In this study, we found that WDR5 promoted the proliferation and self-renewal of glioblastoma and neuroblastoma cells. The data from databases and Western blot assay showed that CARM1 is a downstream gene of WDR5-Myc axis. In addition, we observed that WDR5 promoted the binding of Myc to CARM1 promoter by interacting with Myc and inducing histone 3 lysine 4 trimethylation (H3K4me3). Dual luciferase reporter system indicated that Myc binds to the upstream region (-520 to -515) before transcription start site (TSS) of CARM1 promoter. These findings suggest a novel regulatory model for the proliferation and tumorigenesis of glioblastoma and neuroblastoma by WDR5-Myc axis.
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Affiliation(s)
- Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Jiayi Zhang
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Xiaoxue Ke
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Wen Peng
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Gaichao Zhao
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Shihan Peng
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Jie Xu
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China
| | - Bo Xu
- School Hospital of Southwest University, Southwest University, Beibei, Chongqing, 400716, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Beibei, Chongqing, 400716, China; Cancer Center, Medical Research Institute, Southwest University, Beibei, Chongqing, 400716, China.
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19
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Park JH, Jeong E, Lin J, Ko R, Kim JH, Yi S, Choi Y, Kang IC, Lee D, Lee SY. RACK1 interaction with c-Src is essential for osteoclast function. Exp Mol Med 2019; 51:1-9. [PMID: 31358728 PMCID: PMC6802652 DOI: 10.1038/s12276-019-0285-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/28/2019] [Accepted: 04/29/2019] [Indexed: 12/30/2022] Open
Abstract
The scaffolding protein receptor for activated C-kinase 1 (RACK1) mediates receptor activator of nuclear factor κΒ ligand (RANKL)-dependent activation of p38 MAPK in osteoclast precursors; however, the role of RACK1 in mature osteoclasts is unclear. The aim of our study was to identify the interaction between RACK1 and c-Src that is critical for osteoclast function. A RACK1 mutant protein (mutations of tyrosine 228 and 246 residues to phenylalanine; RACK1 Y228F/Y246F) did not interact with c-Src. The mutant retained its ability to differentiate into osteoclasts; however, the integrity of the RANKL-mediated cytoskeleton, bone resorption activity, and phosphorylation of c-Src was significantly decreased. Importantly, lysine 152 (K152) within the Src homology 2 (SH2) domain of c-Src is involved in RACK1 binding. The c-Src K152R mutant (mutation of lysine 152 into arginine) impaired the resorption of bone by osteoclasts. These findings not only clarify the role of the RACK1-c-Src axis as a key regulator of osteoclast function but will also help to develop new antiresorption therapies to prevent bone loss-related diseases.
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Affiliation(s)
- Jin Hee Park
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, Korea
| | - Eutteum Jeong
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, Korea
| | - Jingjing Lin
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, Korea
| | - Ryeojin Ko
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, Korea
| | - Ji Hee Kim
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea
| | - Sol Yi
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea
| | - Youngjin Choi
- Department of Food Science & Technology, Hoseo University, Asan, 31499, Korea
| | - In-Cheol Kang
- Department of Biological Science, College of Natural Science, BioChip Research Center, and Hoseo University, Asan, 31499, Korea
| | - Daekee Lee
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea
| | - Soo Young Lee
- Department of Life Science, Ewha Womans University, Seoul, 03760, Korea. .,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, Korea.
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20
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Overexpression of RACK1 enhanced the replication of porcine reproductive and respiratory syndrome virus in Marc-145 cells and promoted the NF-κB activation via upregulating the expression and phosphorylation of TRAF2. Gene 2019; 709:75-83. [PMID: 31129249 DOI: 10.1016/j.gene.2019.05.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/07/2019] [Accepted: 05/22/2019] [Indexed: 11/22/2022]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is the causative pathogen for porcine reproductive and respiratory syndrome (PRRS), which lead to huge loss to porcine industry. RACK1 (receptor of activated protein C kinase 1) was first identified as a receptor for protein kinase C. Mounting evidence demonstrated that RACK1 played diverse roles in NF-κB activation and virus infections. We previously reported that siRNA knockdown of RACK1 inhibited PRRSV replication in Marc-145 cells, abrogated NF-κB activation induced by PRRSV infection and reduced the viral titer. Here we established a Marc-145 cell line which could stably overexpress RACK1 to consolidate our findings. Based on the data from RT-qPCR, western blot, immunofluorescence staining, cytopathic effects and viral titer analysis, we concluded that overexpression of RACK1 could enhance the replication of PRRSV in Marc-145 cells and promote the NF-κB activation via upregulating TRAF2 expression and its phosphorylation. Marc-145 cells overexpressing RACK1exhibited severe cytopathic effects post infection with PRRSV and elevated the viral titer. Taken together, RACK1 plays an essential role for PRRSV replication in Marc-145 cells and NF-κB activation. The results presented here shed more light on the understanding of the molecular mechanisms underlying PRRSV infection and its subsequent NF-κB activation. Therefore, we anticipate RACK1 as a promising target for PRRS control.
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21
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Dainichi T, Matsumoto R, Mostafa A, Kabashima K. Immune Control by TRAF6-Mediated Pathways of Epithelial Cells in the EIME (Epithelial Immune Microenvironment). Front Immunol 2019; 10:1107. [PMID: 31156649 PMCID: PMC6532024 DOI: 10.3389/fimmu.2019.01107] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/01/2019] [Indexed: 12/13/2022] Open
Abstract
In the protective responses of epithelial tissues, not only immune cells but also non-immune cells directly respond to external agents. Epithelial cells can be involved in the organization of immune responses through two phases. First, the exogenous harmful agents trigger the primary responses of the epithelial cells leading to various types of immune cell activation. Second, cytokines produced by the immune cells that are activated directly by the external agents and indirectly by the epithelial cell products elicit the secondary responses giving rise to further propagation of immune responses. TRAF6 is a ubiquitin E3 ligase, which intermediates between various types of receptors for exogenous agents or endogenous mediators and activation of subsequent transcriptional responses via NF-kappaB and MAPK pathways. TRAF6 ubiquitously participates in many protective responses in immune and non-immune cells. Particularly, epithelial TRAF6 has an essential role in the primary and secondary responses via driving type 17 response in psoriatic inflammation of the skin. Consistently, many psoriasis susceptibility genes encode the TRAF6 signaling players, such as ACT1 (TRAF3IP2), A20 (TNFAIP3), ABIN1 (TNIP1), IL-36Ra (IL36RN), IkappaBzeta (NFKBIZ), and CARD14. Herein, we describe the principal functions of TRAF6, especially in terms of positive and regulatory immune controls by interaction between immune cells and epithelial cells. In addition, we discuss how TRAF6 in the epithelial cells can organize the differentiation of immune responses and drive inflammatory loops in the epithelial immune microenvironment, which is termed EIME.
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Affiliation(s)
- Teruki Dainichi
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Reiko Matsumoto
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Alshimaa Mostafa
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Dermatology, Beni-Suef University, Beni-Suef, Egypt
| | - Kenji Kabashima
- Department of Dermatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore, Singapore
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22
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Koga Y, Tsurumaki H, Aoki-Saito H, Sato M, Yatomi M, Takehara K, Hisada T. Roles of Cyclic AMP Response Element Binding Activation in the ERK1/2 and p38 MAPK Signalling Pathway in Central Nervous System, Cardiovascular System, Osteoclast Differentiation and Mucin and Cytokine Production. Int J Mol Sci 2019; 20:ijms20061346. [PMID: 30884895 PMCID: PMC6470985 DOI: 10.3390/ijms20061346] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/08/2019] [Accepted: 03/13/2019] [Indexed: 11/26/2022] Open
Abstract
There are many downstream targets of mitogen-activated protein kinase (MAPK) signalling that are involved in neuronal development, cellular differentiation, cell migration, cancer, cardiovascular dysfunction and inflammation via their functions in promoting apoptosis and cell motility and regulating various cytokines. It has been reported that cyclic AMP response element-binding protein (CREB) is phosphorylated and activated by cyclic AMP signalling and calcium/calmodulin kinase. Recent evidence also points to CREB phosphorylation by the MAPK signalling pathway. However, the specific roles of CREB phosphorylation in MAPK signalling have not yet been reviewed in detail. Here, we describe the recent advances in the study of this MAPK-CREB signalling axis in human diseases. Overall, the crosstalk between extracellular signal-related kinase (ERK) 1/2 and p38 MAPK signalling has been shown to regulate various physiological functions, including central nervous system, cardiac fibrosis, alcoholic cardiac fibrosis, osteoclast differentiation, mucin production in the airway, vascular smooth muscle cell migration, steroidogenesis and asthmatic inflammation. In this review, we focus on ERK1/2 and/or p38 MAPK-dependent CREB activation associated with various diseases to provide insights for basic and clinical researchers.
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Affiliation(s)
- Yasuhiko Koga
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Hiroaki Tsurumaki
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Haruka Aoki-Saito
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Makiko Sato
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Masakiyo Yatomi
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Kazutaka Takehara
- Department of Allergy and Respiratory Medicine, Gunma University Graduate School of Medicine, 3-39-15 sho-wa machi Maebashi, Gunma 371-8511, Japan.
| | - Takeshi Hisada
- Gunma University Graduate School of Health Sciences, 3-39-22 sho-wa machi Maebashi, Gunma 371-8514, Japan.
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23
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Jie Z, Shen S, Zhao X, Xu W, Zhang X, Huang B, Tang P, Qin A, Fan S, Xie Z. Activating β-catenin/Pax6 axis negatively regulates osteoclastogenesis by selectively inhibiting phosphorylation of p38/MAPK. FASEB J 2018; 33:4236-4247. [PMID: 30526042 DOI: 10.1096/fj.201801977r] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Balance of osteoclast formation is regulated by the receptor activator of NF-κB ligand and extracellular negative regulators such as IFN-γ and IFN-β. However, very little is known about the intrinsic negative regulatory factors of osteoclast differentiation. Recently, the paired-box homeodomain transcription factor Pax6 was shown to negatively regulate receptor activator of NF-κB ligand-mediated osteoclast differentiation. However, the mechanism underlying this regulation is still unclear. In this study, we show that a p38 inhibitor (VX-745) up-regulates the expression of Pax6 during osteoclast differentiation. Subsequently, we found that β-catenin could bind to the proximal region of Pax6 promoter to induce its expression, and this action could be impaired by p38-induced ubiquitin-mediated degradation of β-catenin. Our results suggest that Pax6 is regulated by a novel p38/β-catenin pathway. Pax6 can further regulate the nuclear translocation of NF of activated T cells, cytoplasmic 1. Our study indicates that this novel p38/β-catenin/Pax6 axis contributes to negative regulation of osteoclastogenesis. In addition, our study proposes a novel approach to treat osteoclast-related diseases through the use of VX-745 complemented with the β-catenin activator SKL2001.-Jie, Z., Shen, S., Zhao, X., Xu, W., Zhang, X., Huang, B., Tang, P., Qin, A., Fan, S., Xie, Z. Activating β-catenin/Pax6 axis negatively regulates osteoclastogenesis by selectively inhibiting phosphorylation of p38/MAPK.
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Affiliation(s)
- Zhiwei Jie
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Shuying Shen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Xiangde Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Wenbin Xu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Xuyang Zhang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Bao Huang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Pan Tang
- Department of Orthopaedics, Huzhou Hospital, Zhejiang University, Hangzhou, China; and
| | - An Qin
- Department of Orthopaedics, Shanghai Key Laboratory of Orthopaedic Implant, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shunwu Fan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Ziang Xie
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
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24
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Mei L, Sang W, Chen Z, Zheng L, Jin K, Lou C, Huang W, He D. Small molecule inhibitor RepSox prevented ovariectomy-induced osteoporosis by suppressing osteoclast differentiation and bone resorption. J Cell Physiol 2018; 233:9724-9738. [PMID: 30059597 DOI: 10.1002/jcp.26914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 06/12/2018] [Indexed: 12/30/2022]
Abstract
Osteoporosis (OP) is a serious metabolic disease that, due to the increased number or function of osteoclasts, results in increased bone brittleness and, therefore, fragile fracture. Some recent studies report the importance of the transforming growth factor β (TGFβ) pathway in bone homeostasis. RepSox is a small molecule inhibitor of TGFβRI that has a wide range of potential application in clinical medicine, except OP. The aim of our study is to evaluate the effects of RepSox on the differentiation and bone resorption of osteoclasts in vitro and in vivo in an ovariectomy (OVX)-induced OP model. An initial analysis showed TGFβRI messenger RNA expression in both bone samples and bone cells. In the in vitro study, RepSox inhibited the receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclast differentiation and bone resorption activity. Real-time polymerase chain reaction (PCR) analysis showed that RepSox suppressed osteoclastic marker gene expression in both dose-dependent and time-dependent manners. In addition, RepSox did not affect osteoblast differentiation, migration or osteoblastic-specific gene expression in vitro. Furthermore, western blot analysis indicated the underlying mechanisms of the RepSox suppression of osteoclastogenesis via the Smad3 and c-Jun N-terminal kinase/activator protein-1 (JNK/AP-1) signaling pathways. Finally, our animal experiments revealed that RepSox prevented OVX-induced bone loss in vivo. Together, our data suggest that RepSox regulates osteoclast differentiation, bone resorption, and OVX-induced OP via the suppression of the Smad3 and JNK/AP-1 pathways.
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Affiliation(s)
- Liangwei Mei
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Wenhua Sang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhenzhong Chen
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Lin Zheng
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Kangtao Jin
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Chao Lou
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Wenjun Huang
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
| | - Dengwei He
- Department of Orthopaedic Surgery, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Municipal Central Hospital, Lishui, Zhejiang, China
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25
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Narahara H, Sakai E, Yamaguchi Y, Narahara S, Iwatake M, Okamoto K, Yoshida N, Tsukuba T. Actin binding LIM 1 (abLIM1) negatively controls osteoclastogenesis by regulating cell migration and fusion. J Cell Physiol 2018; 234:486-499. [PMID: 29904924 DOI: 10.1002/jcp.26605] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 03/16/2018] [Indexed: 12/22/2022]
Abstract
Actin binding LIM 1 (abLIM1) is a cytoskeletal actin-binding protein that has been implicated in interactions between actin filaments and cytoplasmic targets. Previous biochemical and cytochemical studies have shown that abLIM1 interacts and co-localizes with F-actin in the retina and muscle. However, whether abLIM1 regulates osteoclast differentiation has not yet been elucidated. In this study, we examined the role of abLIM1 in osteoclast differentiation and function. We found that abLIM1 expression was upregulated during receptor activator of nuclear factor kappa-B ligand (RANKL)-induced osteoclast differentiation, and that a novel transcript of abLIM1 was exclusively expressed in osteoclasts. Overexpression of abLIM1 in the murine monocytic cell line, RAW-D suppressed osteoclast differentiation and decreased expression of several osteoclast-marker genes. By contrast, small interfering RNA-induced knockdown of abLIM1 enhanced the formation of multinucleated osteoclasts and markedly increased the expression of the osteoclast-marker genes. Mechanistically, abLIM1 regulated the localization of tubulin, migration, and fusion in osteoclasts. Thus, these results indicate that abLIM1 negatively controls osteoclast differentiation by regulating cell migration and fusion mediated via actin formation.
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Affiliation(s)
- Haruna Narahara
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.,Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Eiko Sakai
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yu Yamaguchi
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Shun Narahara
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Mayumi Iwatake
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kuniaki Okamoto
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Noriaki Yoshida
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Takayuki Tsukuba
- Department of Dental Pharmacology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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26
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A flavonoids compound inhibits osteoclast differentiation by attenuating RANKL induced NFATc-1/c-Fos induction. Int Immunopharmacol 2018; 61:150-155. [PMID: 29879658 DOI: 10.1016/j.intimp.2018.05.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 05/27/2018] [Accepted: 05/29/2018] [Indexed: 11/24/2022]
Abstract
Function studies of pectolinarigenin demonstrated that, as a natural product, it possesses the regulatory effects on transcription factors (TFs) such as: signal transducer and activator of transcription 3 (STAT3). Herein, we aimed to identify the regulatroy effects of pectolinarigenin on the osteoclastogenesis TFs such as: NFATc1 and c-Fos, and further identify the relevant up-stream signals activity. We initially found pectolinarigenin inhibited receptor activator of nuclear factor-kappa B ligand (RANKL) induced osteoclast formation during the bone marrow-derived macrophages (BMMs) cultures, suggesting that this natural product could act on osteoclast precursors by inhibiting the down signaling cascades of RANKL signaling. Moreover, mechanistical investigation showed pectolinarigenin inhibits RANKL-mediated osteoclastogenesis by attenuating the nuclear factor of activated T cells cytoplasmic 1 (NFATc-1) and c-Fos following the Akt and mitogen activated protein kinases (MAPKs) signaling costimulatory. These findings identify that pectolinarigenin may act as an anti-resorption agent by blocking osteoclast activation.
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27
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STAC2 negatively regulates osteoclast formation by targeting the RANK signaling complex. Cell Death Differ 2018; 25:1364-1374. [PMID: 29348675 DOI: 10.1038/s41418-017-0048-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 11/08/2022] Open
Abstract
The receptor activator of nuclear factor-κB (RANK) protein activates various protein kinase signaling cascades, including those involving NF-κB, mitogen-activated protein kinase (MAPK), and Bruton tyrosine kinase (Btk)/tyrosine-protein kinase Tec. However, the mechanism underlying the negative regulation of RANK by downstream signaling molecules remains unclear. Here, we report that Src homology 3 domain and cysteine-rich domain-containing protein 2 (STAC2) is a novel RANK ligand-inducible protein that negatively regulates RANK-mediated osteoclast formation. STAC2 physically interacts with RANK and inhibits the formation of the RANK signaling complex, which contains Grb-2-associated binder 2 (Gab2) and phospholipase Cγ2 (PLCγ2), thus leading to the suppression of RANK-mediated NF-κB and MAPK activation. Furthermore, STAC2 overexpression limits Btk/Tec-mediated PLCγ2 phosphorylation via the interaction between STAC2 and Btk/Tec. Taken together, our results reveal a novel mechanism whereby RANK signaling is restricted by its physical interaction with STAC2.
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28
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Lee NK. RANK Signaling Pathways and Key Molecules Inducing Osteoclast Differentiation. ACTA ACUST UNITED AC 2017. [DOI: 10.15616/bsl.2017.23.4.295] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Na Kyung Lee
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Chungnam 31538, Korea
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29
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Schapira M, Tyers M, Torrent M, Arrowsmith CH. WD40 repeat domain proteins: a novel target class? Nat Rev Drug Discov 2017; 16:773-786. [PMID: 29026209 PMCID: PMC5975957 DOI: 10.1038/nrd.2017.179] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antagonism of protein-protein interactions (PPIs) with small molecules is becoming more feasible as a therapeutic approach. Successful PPI inhibitors tend to target proteins containing deep peptide-binding grooves or pockets rather than the more common large, flat protein interaction surfaces. Here, we review one of the most abundant PPI domains in the human proteome, the WD40 repeat (WDR) domain, which has a central peptide-binding pocket and is a member of the β-propeller domain-containing protein family. Recently, two WDR domain-containing proteins, WDR5 and EED, as well as other β-propeller domains have been successfully targeted by potent, specific, cell-active, drug-like chemical probes. Could WDR domains be a novel target class for drug discovery? Although the research is at an early stage and therefore not clinically validated, cautious optimism is justified, as WDR domain-containing proteins are involved in multiple disease-associated pathways. The druggability and structural diversity of WDR domain binding pockets suggest that understanding how to target this prevalent domain class will open up areas of disease biology that have so far resisted drug discovery efforts.
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Affiliation(s)
- Matthieu Schapira
- Structural Genomics Consortium, University of Toronto, Toronto, ON M5G 1L7, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Mike Tyers
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Mount Sinai Hospital, The Lunenfeld-Tanenbaum Research Institute, Toronto, ON M5G 1X5, Canada
| | - Maricel Torrent
- Discovery Research, AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States
| | - Cheryl H. Arrowsmith
- Structural Genomics Consortium, University of Toronto, Toronto, ON M5G 1L7, Canada
- Princess Margaret Cancer Centre and Department of Medical Biophysics, University of Toronto, 101 College St., Toronto, ON M5G 1L7, Canada
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30
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Park JH, Lee NK, Lee SY. Current Understanding of RANK Signaling in Osteoclast Differentiation and Maturation. Mol Cells 2017; 40:706-713. [PMID: 29047262 PMCID: PMC5682248 DOI: 10.14348/molcells.2017.0225] [Citation(s) in RCA: 274] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 12/17/2022] Open
Abstract
Osteoclasts are bone-resorbing cells that are derived from hematopoietic precursor cells and require macrophage-colony stimulating factor and receptor activator of nuclear factor-κB ligand (RANKL) for their survival, proliferation, differentiation, and activation. The binding of RANKL to its receptor RANK triggers osteoclast precursors to differentiate into osteoclasts. This process depends on RANKL-RANK signaling, which is temporally regulated by various adaptor proteins and kinases. Here we summarize the current understanding of the mechanisms that regulate RANK signaling during osteoclastogenesis. In the early stage, RANK signaling is mediated by recruiting adaptor molecules such as tumor necrosis factor receptor-associated factor 6 (TRAF6), which leads to the activation of mitogen-activated protein kinases (MAPKs), and the transcription factors nuclear factor-κB (NF-κB) and activator protein-1 (AP-1). Activated NF-κB induces the nuclear factor of activated T-cells cytoplasmic 1 (NFATc1), which is the key osteoclastogenesis regulator. In the intermediate stage of signaling, the co-stimulatory signal induces Ca2+ oscillation via activated phospholipase Cγ2 (PLCγ2) together with c-Fos/AP-1, wherein Ca2+ signaling facilitates the robust production of NFATc1. In the late stage of osteoclastogenesis, NFATc1 translocates into the nucleus where it induces numerous osteoclast-specific target genes that are responsible for cell fusion and function.
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Affiliation(s)
- Jin Hee Park
- Department of Life Science, Ewha Womans University, Seoul 03760,
Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760,
Korea
| | - Na Kyung Lee
- Department of Biomedical Laboratory Science, College of Medical Sciences, Soonchunhyang University, Asan 31538,
Korea
| | - Soo Young Lee
- Department of Life Science, Ewha Womans University, Seoul 03760,
Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760,
Korea
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31
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Mbalaviele G, Novack DV, Schett G, Teitelbaum SL. Inflammatory osteolysis: a conspiracy against bone. J Clin Invest 2017; 127:2030-2039. [PMID: 28569732 DOI: 10.1172/jci93356] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
There are many causes of inflammatory osteolysis, but regardless of etiology and cellular contexts, the osteoclast is the bone-degrading cell. Thus, the impact of inflammatory cytokines on osteoclast formation and function was among the most important discoveries advancing the treatment of focal osteolysis, leading to development of therapeutic agents that either directly block the bone-resorptive cell or do so indirectly via cytokine arrest. Despite these advances, a substantial number of patients with inflammatory arthritis remain resistant to current therapies, and even effective anti-inflammatory drugs frequently do not repair damaged bone. Thus, insights into events such as those impacted by inflammasomes, which signal through cytokine-dependent and -independent mechanisms, are needed to optimize treatment of inflammatory osteolysis.
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Affiliation(s)
| | - Deborah V Novack
- Department of Medicine, Division of Bone and Mineral Diseases, and.,Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Steven L Teitelbaum
- Department of Medicine, Division of Bone and Mineral Diseases, and.,Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, St. Louis, Missouri, USA
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32
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Cong Q, Jia H, Li P, Qiu S, Yeh J, Wang Y, Zhang ZL, Ao J, Li B, Liu H. p38α MAPK regulates proliferation and differentiation of osteoclast progenitors and bone remodeling in an aging-dependent manner. Sci Rep 2017; 7:45964. [PMID: 28382965 PMCID: PMC5382695 DOI: 10.1038/srep45964] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/07/2017] [Indexed: 02/07/2023] Open
Abstract
Bone mass is determined by the balance between bone formation, carried out by mesenchymal stem cell-derived osteoblasts, and bone resorption, carried out by monocyte-derived osteoclasts. Here we investigated the potential roles of p38 MAPKs, which are activated by growth factors and cytokines including RANKL and BMPs, in osteoclastogenesis and bone resorption by ablating p38α MAPK in LysM+monocytes. p38α deficiency promoted monocyte proliferation but regulated monocyte osteoclastic differentiation in a cell-density dependent manner, with proliferating p38α−/− cultures showing increased differentiation. While young mutant mice showed minor increase in bone mass, 6-month-old mutant mice developed osteoporosis, associated with an increase in osteoclastogenesis and bone resorption and an increase in the pool of monocytes. Moreover, monocyte-specific p38α ablation resulted in a decrease in bone formation and the number of bone marrow mesenchymal stem/stromal cells, likely due to decreased expression of PDGF-AA and BMP2. The expression of PDGF-AA and BMP2 was positively regulated by the p38 MAPK-Creb axis in osteoclasts, with the promoters of PDGF-AA and BMP2 having Creb binding sites. These findings uncovered the molecular mechanisms by which p38α MAPK regulates osteoclastogenesis and coordinates osteoclastogenesis and osteoblastogenesis.
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Affiliation(s)
- Qian Cong
- Dept. of Osteoporosis and Bone Diseases, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hao Jia
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China.,Department of Biochemistry and Molecular cellular Biology Shanghai Jiaotong University, School of Medicine, 280 Chongqing Rd, Shanghai, 200025, China
| | - Ping Li
- Dept. of Osteoporosis and Bone Diseases, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shoutao Qiu
- Dept. of Osteoporosis and Bone Diseases, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - James Yeh
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yibin Wang
- Division of Molecular Medicine, Departments of Anesthesiology, Medicine and Physiology, Molecular Biology Institute, Cardiovascular Research Laboratories, David Geffen School of Medicine, Los Angeles, CA90095, USA
| | - Zhen-Lin Zhang
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Junping Ao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Baojie Li
- Dept. of Osteoporosis and Bone Diseases, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huijuan Liu
- Dept. of Osteoporosis and Bone Diseases, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
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33
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Asc1p/RACK1 Connects Ribosomes to Eukaryotic Phosphosignaling. Mol Cell Biol 2017; 37:MCB.00279-16. [PMID: 27821475 DOI: 10.1128/mcb.00279-16] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 10/24/2016] [Indexed: 02/07/2023] Open
Abstract
WD40 repeat proteins fold into characteristic β-propeller structures and control signaling circuits during cellular adaptation processes within eukaryotes. The RACK1 protein of Saccharomyces cerevisiae, Asc1p, consists exclusively of a single seven-bladed β-propeller that operates from the ribosomal base at the head region of the 40S subunit. Here we show that the R38D K40E ribosomal binding-compromised variant (Asc1DEp) is severely destabilized through mutation of phosphosite T143 to a dephosphorylation-mimicking alanine, probably through proteasomal degradation, leading to asc1- phenotypes. Phosphosite Y250 contributes to resistance to translational inhibitors but does not influence Asc1DEp stability. Beyond its own phosphorylation at T143, Y250, and other sites, Asc1p heavily influences the phosphorylation of as many as 90 proteins at 120 sites. Many of these proteins are regulators of fundamental processes ranging from mRNA translation to protein transport and turnover, cytoskeleton organization, and cellular signaling. Our data expose Asc1p/RACK1 as a key factor in phosphosignaling and manifest it as a control point at the head of the ribosomal 40S subunit itself regulated through posttranslational modification.
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Liu H, Dong S, Sun D, Liu W, Gu F, Liu Y, Guo T, Wang H, Wang J, Chen Z. CONSTANS-Like 9 (OsCOL9) Interacts with Receptor for Activated C-Kinase 1(OsRACK1) to Regulate Blast Resistance through Salicylic Acid and Ethylene Signaling Pathways. PLoS One 2016; 11:e0166249. [PMID: 27829023 PMCID: PMC5102437 DOI: 10.1371/journal.pone.0166249] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 10/25/2016] [Indexed: 11/19/2022] Open
Abstract
In a previous transcriptome analysis of early response genes in rice during Magnaporthe oryzae infection, we identified a CONSTANS-like (COL) gene OsCOL9. In the present study, we investigated the functional roles of OsCOL9 in blast resistance. OsCOL9 belonged to group II of the COL protein family, and it contained a BB-box and a C-terminal CCT (CONSTANS, COL and TOC1) domain. OsCOL9 was found in the nucleus of rice cells, and it exerted transcriptional activation activities through its middle region (MR). Magnaporthe oryzae infection induced OsCOL9 expression, and transgenic OsCOL9 knock-out rice plants showed increased pathogen susceptibility. OsCOL9 was a critical regulator of pathogen-related genes, especially PR1b, which were also activated by exogenous salicylic acid (SA) and 1-aminocyclopropane-1-carboxylicacid (ACC), the precursor of ethylene (ET). Further analysis indicated that OsCOL9 over-expression increased the expressions of phytohormone biosynthetic genes, NPR1, WRKY45, OsACO1 and OsACS1, which were related to SA and ET biosynthesis. Interestingly, we found that OsCOL9 physically interacted with the scaffold protein OsRACK1 through its CCT domain, and the OsRACK1 expression was induced in response to exogenous SA and ACC as well as M. oryzae infection. Taken together, these results indicated that the COL protein OsCOL9 interacted with OsRACK1, and it enhanced the rice blast resistance through SA and ET signaling pathways.
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Affiliation(s)
- Hao Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Shuangyu Dong
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Dayuan Sun
- Plant Protection Research Institute Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou, 510640, China
| | - Wei Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Fengwei Gu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Yongzhu Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Tao Guo
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Hui Wang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
| | - Jiafeng Wang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
- * E-mail: (JW); (ZC)
| | - Zhiqiang Chen
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou, 510642, China
- * E-mail: (JW); (ZC)
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Liu H, Gu F, Dong S, Liu W, Wang H, Chen Z, Wang J. CONSTANS-like 9 (COL9) delays the flowering time in Oryza sativa by repressing the Ehd1 pathway. Biochem Biophys Res Commun 2016; 479:173-178. [PMID: 27620492 DOI: 10.1016/j.bbrc.2016.09.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 12/15/2022]
Abstract
Flowering or heading is one of most important agronomic traits in rice. It has been characterized that CONSTANS (CO) and CONSTANS-like (COL) proteins are critical flowering regulators in response to photoperiodic stress in plants. We have previously identified that the COL family member OsCOL9 can positively enhance the rice blast resistance. In the present study, we aimed to explore the functional role of OsCOL9 in modulating the photoperiodic flowering. Our data showed that overexpression of OsCOL9 delayed the flowering time under both short-day (SD) and long-day (LD) conditions, leading to suppressed expressions of EHd1, RFT and Hd3a at the mRNA Level. OsCOL9 expression exhibited two types of circadian patterns under different daylight conditions, and it could delay the heading date by suppressing the Ehd1 photoperiodic flowering pathway. In contrast, the expressions of previously reported flowering regulators were not significantly changed in OsCOL9 transgenic plants, indicating that OsCOL9 functioned independently of other flowering pathways. In addition, OsCOL9 served as a potential yield gene, and its deficiency reduced the grain number of main panicle in plants. Furthermore, yeast two-hybrid assay indicated that OsCOL9 physically interacted with Receptor for Activated C-kinase 1 (OsRACK1). Rhythmic pattern analysis suggested that OsRACK1 responded to the change of daylight, which was regulated by the circadian clock. Taken together, our results revealed that OsCOL9 could delay the flowering time in rice by repressing the Ehd1 pathway.
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Affiliation(s)
- Hao Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Fengwei Gu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Shuangyu Dong
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Wei Liu
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Hui Wang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China
| | - Zhiqiang Chen
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China.
| | - Jiafeng Wang
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, Guangzhou 510642, China.
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Park SJ, Huh JE, Shin J, Park DR, Ko R, Jin GR, Seo DH, Kim HS, Shin HI, Oh GT, Kim HS, Lee SY. Sirt6 cooperates with Blimp1 to positively regulate osteoclast differentiation. Sci Rep 2016; 6:26186. [PMID: 27189179 PMCID: PMC4870620 DOI: 10.1038/srep26186] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/27/2016] [Indexed: 01/06/2023] Open
Abstract
Global deletion of the gene encoding a nuclear histone deacetylase sirtuin 6 (Sirt6) in mice leads to osteopenia with a low bone turnover due to impaired bone formation. But whether Sirt6 regulates osteoclast differentiation is less clear. Here we show that Sirt6 functions as a transcriptional regulator to directly repress anti-osteoclastogenic gene expression. Targeted ablation of Sirt6 in hematopoietic cells including osteoclast precursors resulted in increased bone volume caused by a decreased number of osteoclasts. Overexpression of Sirt6 led to an increase in osteoclast formation, and Sirt6-deficient osteoclast precursor cells did not undergo osteoclast differentiation efficiently. Moreover, we showed that Sirt6, induced by RANKL-dependent NFATc1 expression, forms a complex with B lymphocyte-induced maturation protein-1 (Blimp1) to negatively regulate expression of anti-osteoclastogenic gene such as Mafb. These findings identify Sirt6 as a novel regulator of osteoclastogenesis by acting as a transcriptional repressor.
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Affiliation(s)
- So Jeong Park
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Jeong-Eun Huh
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Jihye Shin
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Doo Ri Park
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Ryeojin Ko
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Gyu-Rin Jin
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea.,Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Dong-Hyun Seo
- Department of Biomedical Engineering, College of Health Science, Institute of Medical Engineering, Yonsei University, Wonju, Korea
| | - Han-Sung Kim
- Department of Biomedical Engineering, College of Health Science, Institute of Medical Engineering, Yonsei University, Wonju, Korea
| | - Hong-In Shin
- IHBR, Department of Oral Pathology, School of Dentistry, Kyungpook National University, Daegu 700-412, Korea
| | - Goo Taeg Oh
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
| | - Hyun Seok Kim
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea.,Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Soo Young Lee
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea.,The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
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37
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Huh JE, Shin JH, Jang ES, Park SJ, Park DR, Ko R, Seo DH, Kim HS, Lee SH, Choi Y, Kim HS, Lee SY. Sirtuin 3 (SIRT3) maintains bone homeostasis by regulating AMPK-PGC-1β axis in mice. Sci Rep 2016; 6:22511. [PMID: 26928655 PMCID: PMC4772385 DOI: 10.1038/srep22511] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/16/2016] [Indexed: 11/09/2022] Open
Abstract
The mitochondrial sirtuin 3 (SIRT3) is involved in suppressing the onset of multiple pathologies, including cardiovascular disease, fatty liver, age-related hearing loss, and breast cancer. But a physiological role of SIRT3 in bone metabolism is not known. Here we show that SIRT3 is a key regulatory molecule to maintain bone homeostasis. Mice deficient in SIRT3 exhibited severe osteopenia owing to increased numbers of osteoclasts. Osteoclast precursors from Sirt3-/- mice underwent increased osteoclastogenesis in response to receptor activator of nuclear factor-κB ligand (RANKL), an essential cytokine for osteoclast differentiation. SIRT3 expression from RANKL induction depended on the transcription coactivator PGC-1β (peroxisome proliferator-activated receptor-γ co-activator-1β) and the nuclear receptor ERRα (estrogen receptor-related receptor α), and that SIRT3 inhibited the differentiation by interfering with the RANKL-induced expression of PGC-1β. Thus an auto-regulatory feedback mechanism operates to induce its own inhibitor SIRT3 by PGC-1β. Moreover, Sirt3-/- osteoclast precursors reduced AMP-activated protein kinase (AMPK) phosphorylation through down-regulating the expression of AMPK. Our results suggest that a mitochondrial SIRT3 is an intrinsic inhibitor for RANKL-mediated osteoclastogenesis.
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Affiliation(s)
- Jeong-Eun Huh
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Ji Hye Shin
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
| | - Eun Sun Jang
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - So Jeong Park
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Doo Ri Park
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Ryeojin Ko
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
| | - Dong-Hyun Seo
- Department of Biomedical Engineering, College of Health Science, Institute of Medical Engineering, Yonsei University, Wonju 220-710, Korea
| | - Han-Sung Kim
- Department of Biomedical Engineering, College of Health Science, Institute of Medical Engineering, Yonsei University, Wonju 220-710, Korea
| | - Seoung Hoon Lee
- Department of Oral Microbiology and Immunology, College of Dentistry, Wonkwang University, Iksan 570-749, Korea
| | - Yongwon Choi
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Hyun Seok Kim
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Soo Young Lee
- Department of Life Science, Ewha Womans University, Seoul 120-750, Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, Korea
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38
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Wang Q, Zhou S, Wang JY, Cao J, Zhang X, Wang J, Han K, Cheng Q, Qiu G, Zhao Y, Li X, Qiao C, Li Y, Hou C, Zhang J. RACK1 antagonizes TNF-α-induced cell death by promoting p38 activation. Sci Rep 2015; 5:14298. [PMID: 26381936 PMCID: PMC4585558 DOI: 10.1038/srep14298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/24/2015] [Indexed: 02/08/2023] Open
Abstract
p38 mitogen-activated protein kinase (MAPK) activity has been reported to either promote or suppress cell death, which depends on cell type and stimulus. Our previous report indicates that p38 exerts a protective role in tumor necrosis factor (TNF)-α-induced cell death in L929 fibroblastoma cells. However, key molecules regulating p38 activation remain unclear. Here, we show that ectopic expression of scaffold protein receptor for activated C kinase 1 (RACK1) suppressed TNF-α-induced cell death in L929 cells, which was associated with enhanced p38 activation. Knockdown of endogenous RACK1 expression exhibited opposite effects. The protective role of RACK1 in TNF-α-induced cell death diminished upon blockade of p38 activation. Therefore, RACK1 antagonizes TNF-α-induced cell death through, at least partially, augmenting p38 activation. Further exploration revealed that RACK1 directly bound to MKK3/6 and enhanced the kinase activity of MKK3/6 without affecting MKK3/6 phosphorylation. Similar effects of RACK1 were also observed in primary murine hepatocytes, another cell type sensitive to TNF-α-induced cell death. Taken together, our data suggest that RACK1 is a key factor involved in p38 activation as well as TNF-α-induced cell death.
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Affiliation(s)
- Qingyang Wang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Silei Zhou
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Jing-Yang Wang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Junxia Cao
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Xueying Zhang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Jing Wang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Kun Han
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Qianqian Cheng
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Guihua Qiu
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Yawei Zhao
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Xinying Li
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Chunxia Qiao
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Yan Li
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Chunmei Hou
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
| | - Jiyan Zhang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P. R. China
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