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Lin X, Yuan G, Yang B, Xie C, Zhou Z, Liu Y, Liu Z, Wu Z, Akimoto Y, Li N, Xu R, Song F. Dauricine attenuates ovariectomized-induced bone loss and RANKL-induced osteoclastogenesis via inhibiting ROS-mediated NF-κB and NFATc1 activity. Phytomedicine 2024; 129:155559. [PMID: 38579642 DOI: 10.1016/j.phymed.2024.155559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 03/13/2024] [Accepted: 03/20/2024] [Indexed: 04/07/2024]
Abstract
BACKGROUND Osteoclast plays an important role in maintaining the balance between bone anabolism and bone catabolism. The abnormality of osteoclast is closely related to osteolytic bone diseases such as osteoporosis, rheumatoid arthritis and tumor bone metastasis. PURPOSE We aim to search for natural compound that may suppress osteoclast formation and function. STUDY DESIGN In this study, we assessed the impact of Dauricine (Dau) on the formation and function of osteoclasts in vitro, as well as its potential in preventing bone loss in an ovariectomy mouse model in vivo. METHODS Multiple in vitro experiments were carried out, including osteoclastogenesis, podosomal belt formation, bone resorption assay, RNA-sequencing, real-time quantitative PCR, ROS level detection, surface plasmon resonance assay, luciferase assay and western blot. To verify the effect in vivo, an ovariectomized mouse model (OVX model) was constructed, and bone parameters were measured using micro-CT and histology. Furthermore, metabolomics analysis was performed on blood serum samples from the OVX model. RESULTS In vitro experiments demonstrated that Dau inhibits RANKL-induced osteoclastogenesis, podosomal belt formation, and bone resorption function. RNA-sequencing results revealed that Dau significantly suppresses genes related to osteoclast. Functional enrichment analysis indicated that Dau's inhibition of osteoclasts may be associated with NF-κB signaling pathway and reactive oxygen metabolism pathway. Molecular docking, surface plasmon resonance assay and western blot analysis further confirmed that Dau inhibits RANKL-induced osteoclastogenesis by modulating the ROS/NF-κB/NFATc1 pathway. Moreover, administration of Dau to OVX-induced mice validated its efficacy in treating bone loss disease. CONCLUSION Dau prevents OVX-induced bone loss by inhibiting osteoclast activity and bone resorption, potentially offering a new approach for preventing and treating metabolic bone diseases such as osteoporosis. This study provides innovative insights into the inhibitory effects of Dau in an in vivo OVX model and elucidates the underlying mechanism.
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Affiliation(s)
- Xixi Lin
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China
| | - Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China; Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou University Medical College, Shantou, Guangdong, 515044, China
| | - Bin Yang
- Department of Anesthesiology, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, 361000, China
| | - Chunlan Xie
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China
| | - Zhigao Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou University Medical College, Shantou, Guangdong, 515044, China
| | - Ying Liu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China
| | - Zhijuan Liu
- Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, 530021, China; Collaborative Innovation Centre of Regenerative Medicine and Medical Bio Resource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Zuoxing Wu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China
| | | | - Na Li
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, School of Medicine, Xiamen University, Xiamen, Fujian, 361100, China; Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China; Collaborative Innovation Centre of Regenerative Medicine and Medical Bio Resource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, 530021, China.
| | - Fangming Song
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, 361100, China; Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, 530021, China; Collaborative Innovation Centre of Regenerative Medicine and Medical Bio Resource Development and Application Co-constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, 530021, China.
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Yuan G, Lin X, Liu Y, Greenblatt MB, Xu R. Skeletal stem cells in bone development, homeostasis and disease. Protein Cell 2024:pwae008. [PMID: 38442300 DOI: 10.1093/procel/pwae008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Indexed: 03/07/2024] Open
Abstract
Tissue-resident stem cells are essential for development and repair, and in the skeleton this function is fulfilled by recently identified skeletal stem cells (SSCs). However, recent work has identified that SSCs are not monolithic, with long bones, craniofacial sites, and the spine being formed by distinct stem cells. Recent studies have utilized techniques such as fluorescence-activated cell sorting (FACS), lineage tracing and single-cell sequencing to investigate the involvement of SSCs in bone development, homeostasis and disease. These investigations have allowed researchers to map the lineage commitment trajectory of SSCs in different parts of the body and at different time points. Furthermore, recent studies have shed light on the characteristics of SSCs in both physiological and pathological conditions. This review focuses on discussing the spatiotemporal distribution of SSCs and enhancing our understanding of the diversity and plasticity of SSCs by summarizing recent discoveries.
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Affiliation(s)
- Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361005, China
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Xixi Lin
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361005, China
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Ying Liu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361005, China
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Matthew B Greenblatt
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10065, USA
- Research Division, Hospital for Special Surgery, New York, NY 10065, USA
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361005, China
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, 361102, China
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Wu Z, Lin X, Yuan G, Li N, Xu R. Innate lymphoid cells: New players in osteoimmunology. Eur J Immunol 2024; 54:e2350381. [PMID: 38234001 DOI: 10.1002/eji.202350381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 12/21/2023] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
Innate lymphoid cells (ILCs) are the most recently identified immune cell types existing in lymphoid and nonlymphoid organs. Albeit they lack the expression of antigen receptors, ILCs play vital roles in innate immune responses by producing multiple effector cytokines. The ILC family includes conventional natural killer cells and cytokine-producing ILCs, which are divided into group 1, group 2, and group 3 ILCs based on their effector cytokines and developmental requirements. Emerging evidence has indicated that ILCs are essential immune regulators of bone homeostasis, playing a critical role in osteoimmunology. In this mini-review, we discuss recent advances in the understanding of ILC functions in bone homeostasis under physiological and pathological conditions, with an emphasis on the communication between ILCs and bone cells including osteoclasts and osteoblasts, as well as the underlying immunoregulatory networks involving ILC-derived cytokines and growth factors. This review also discusses future research directions and the potential of targeting ILCs for the treatment of inflammation-associated bone disorders.
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Affiliation(s)
- Zuoxing Wu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Xixi Lin
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Na Li
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cells, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
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Cheng C, Yu X, Shi K, Dai G, Pan Q, Yuan G, Jia J. Associations between abdominal obesity indices with hypertension in type 2 diabetes mellitus: Chinese visceral adiposity index. J Endocrinol Invest 2024; 47:547-555. [PMID: 37768525 DOI: 10.1007/s40618-023-02165-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/14/2023] [Indexed: 09/29/2023]
Abstract
PURPOSE This research was performed to evaluate the relationship between hypertension (HTN) and abdominal obesity index in patients with type 2 diabetes mellitus (T2DM). METHODS Totally 1657 participants with T2DM (mean age 54 ± 12 years; 38.02% female) were enrolled. They were divided into the groups of HTN (n = 775) and non-HTN (n = 882). Anthropometric and biochemical indicators were measured and collected. A bioelectrical impedance analyzer was used to measure visceral and subcutaneous fat areas. RESULTS Compared with the HTN group, the non-HTN group had a lower level of Chinese visceral adiposity index (CVAI) (p < 0.001). Meanwhile, among tertiles of CVAI, as CVAI increased, the proportion of patients with HTN increased, which was 33.51%, 44.30%, and 62.50%, respectively. CVAI was shown to have a significant positive correlation with HTN. (r = 0.258, p < 0.001). CVAI was independently related to an elevated risk of HTN by binary logistic regression analyses, and the OR was (95% CI) 1.013 (1.010-1.016, p < 0.001) after adjustment. The area under the receiver operating characteristic curve (AUC) of CVAI predicted HTN in T2DM patients was greater than those of other abdominal obesity indices (p < 0.001). CONCLUSION We found that CVAI was highly positively correlated with HTN in T2DM. Compared with other indices of abdominal obesity, such as WC, BMI, WHR, VAI, and LAP, the CVAI showed superior discriminative ability in T2DM complicated with HTN. Therefore, more attention should be paid to CVAI in T2DM.
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Affiliation(s)
- C Cheng
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - X Yu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - K Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - G Dai
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - Q Pan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China
| | - G Yuan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China.
| | - J Jia
- Department of Endocrinology and Metabolism, Affiliated Hospital of Jiangsu University, Institute of Endocrine and Metabolic Diseases, Jiangsu University, Zhenjiang, China.
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Zhang X, Liu Y, Yuan G, Wang S, Wang D, Zhu T, Wu X, Ma M, Guo L, Guo H, Bhadauria V, Liu J, Peng YL. The synthetic NLR RGA5 HMA5 requires multiple interfaces within and outside the integrated domain for effector recognition. Nat Commun 2024; 15:1104. [PMID: 38321036 PMCID: PMC10847126 DOI: 10.1038/s41467-024-45380-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/19/2024] [Indexed: 02/08/2024] Open
Abstract
Some plant sensor nucleotide-binding leucine-rich repeat (NLR) receptors detect pathogen effectors through their integrated domains (IDs). Rice RGA5 sensor NLR recognizes its corresponding effectors AVR-Pia and AVR1-CO39 from the blast fungus Magnaporthe oryzae through direct binding to its heavy metal-associated (HMA) ID to trigger the RGA4 helper NLR-dependent resistance in rice. Here, we report a mutant of RGA5 named RGA5HMA5 that confers complete resistance in transgenic rice plants to the M. oryzae strains expressing the noncorresponding effector AVR-PikD. RGA5HMA5 carries three engineered interfaces, two of which lie in the HMA ID and the other in the C-terminal Lys-rich stretch tailing the ID. However, RGA5 variants having one or two of the three interfaces, including replacing all the Lys residues with Glu residues in the Lys-rich stretch, failed to activate RGA4-dependent cell death of rice protoplasts. Altogether, this work demonstrates that sensor NLRs require a concerted action of multiple surfaces within and outside the IDs to both recognize effectors and activate helper NLR-mediated resistance, and has implications in structure-guided designing of sensor NLRs.
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Affiliation(s)
- Xin Zhang
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, 100193, Beijing, China
| | - Yang Liu
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China
| | - Guixin Yuan
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, 100193, Beijing, China
| | - Shiwei Wang
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, 100193, Beijing, China
| | - Dongli Wang
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China
| | - Tongtong Zhu
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China
| | - Xuefeng Wu
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China
| | - Mengqi Ma
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China
| | - Liwei Guo
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, 650201, Kunming, China
| | - Hailong Guo
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Vijai Bhadauria
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Junfeng Liu
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China.
- Joint International Research Laboratory of Crop Molecular Breeding, China Agricultural University, 100193, Beijing, China.
| | - You-Liang Peng
- The State Key Laboratory of Maize Bio-breeding, Joint International Research Laboratory of Crop Molecular Breeding, Ministry of Agriculture Key Laboratory for Crop Pest Monitoring and Green Control, College of Plant Protection, China Agricultural University, 100193, Beijing, China.
- Frontiers Science Center for Molecular Design Breeding, China Agricultural University, 100193, Beijing, China.
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Zheng R, Chen Y, Yao G, Zeng J, Ma X, Yuan G, Hu X. Computed Tomography-Based Morphometric Analysis of Lower Cervical Anterior Transpedicular Screw Fixation and Related Factors in the Chinese Population. World Neurosurg 2024; 182:e721-e733. [PMID: 38092354 DOI: 10.1016/j.wneu.2023.12.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND Anterior transpedicular screw (ATPS) internal fixation of the lower cervical spine is an alternative for patients who cannot tolerate combined anterior and posterior surgery. The cervical vertebral anatomy varies with many factors, including age, gender, height, weight, and race. METHODS Three-dimensional (3D) CT reconstructions were performed on 122 patients. We selected the best level and measured the relevant parameters on both sides of the cervical vertebrae. RESULTS We identified the entry point and orientation parameters of ATPS fixation for the C3-C7 vertebrae, and analyzed cervical pedicle parameters. Outer pedicle width (OPW), outer pedicle height (OPH), and pedicle axis length (PAL) were not correlated with body weight and age, but were positively correlated with body height (P < 0.05). After multiple linear regression analysis to exclude the effects of body height, no significant differences in OPW, OPH, and PAL were found between male and female subjects at most cervical levels. Pedicle cortical thickness was negatively correlated with age (P < 0.05). The percentage of pedicles with OPW <4.5 mm was: C3, 38.10%; C4, 34.92%; C5, 12.70%; C6, 9.52%; and C7, 0%. The percentage of pedicles with OPWs ≤4.5 mm, ≤4.0 mm, and ≤3.5 mm was higher among subjects with body height <160 cm. CONCLUSIONS This study presents the internal anatomy of the cervical spine and provides accurate preoperative evaluation data for ATPS fixation. OPW, OPH, and PAL are positively correlated with body height, while pedicle cortical thickness is negatively correlated with age.
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Affiliation(s)
- Ruiwu Zheng
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Yuchun Chen
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Jicang Zeng
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Xueming Ma
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Xianghua Hu
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China.
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Zhou W, Zhou W, Bi Y, Zhou Z, Zhou Z, Chen S, Xie G, Lian Z, Yuan G, Yao G. Antidepressant duloxetine hydrochloride protects against ovariectomy-induced bone loss in mice by inhibiting osteoclast differentiation. Biomed Pharmacother 2023; 168:115810. [PMID: 37913736 DOI: 10.1016/j.biopha.2023.115810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/21/2023] [Accepted: 10/26/2023] [Indexed: 11/03/2023] Open
Abstract
BACKGROUND Several studies have reported the association between osteoporosis and major depressive disorder (MDD) as well as the use of antidepressants. However, it remains to be elucidated whether these associations are related to exposure to antidepressants, a consequence of a disease process, or a combination of both. METHODS This study investigates the independent effect of the antidepressant duloxetine hydrochloride (DH) on ovariectomy-induced bone loss in mice. One week after ovariectomy, the treated mice received DH. To explore the mechanism underlying the rescue of bone loss, bone marrow cells were isolated from mouse femurs and tibias, and macrophages extracted from them were induced to become osteoclasts in vitro while being treated with DH. Subsequently, the osteoclasts underwent Bulk RNA-Seq to reveal the involved signaling pathways. The results of the bioinformatic analysis were then validated through in vitro experiments. RESULTS The in vivo experiments demonstrated that DH treatment compromised ovariectomy-induced bone loss after 7 weeks. The in vitro experiments suggested that DH treatment attenuated osteoclast differentiation via the MAPKs/NFATc1 signaling pathway. CONCLUSION The findings from this study suggest that DH, instead of causing bone mass loss, may assist in alleviating postmenopausal osteoporosis. These results can serve as a reference for the clinical treatment of patients with perimenopausal or postmenopausal depression using antidepressants.
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Affiliation(s)
- Weijun Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Wenyun Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Yonghao Bi
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Zibin Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Zhigao Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Shaozhe Chen
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China
| | - Gang Xie
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China.
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Shantou University Medical College, Shantou, Guangdong, China.
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Liu H, Lu X, Li M, Lun Z, Yan X, Yin C, Yuan G, Wang X, Liu N, Liu D, Wu M, Luo Z, Zhang Y, Bhadauria V, Yang J, Talbot NJ, Peng YL. Plant immunity suppression by an exo-β-1,3-glucanase and an elongation factor 1α of the rice blast fungus. Nat Commun 2023; 14:5491. [PMID: 37679340 PMCID: PMC10484928 DOI: 10.1038/s41467-023-41175-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/23/2023] [Indexed: 09/09/2023] Open
Abstract
Fungal cell walls undergo continual remodeling that generates β-1,3-glucan fragments as products of endo-glycosyl hydrolases (GHs), which can be recognized as pathogen-associated molecular patterns (PAMPs) and trigger plant immune responses. How fungal pathogens suppress those responses is often poorly understood. Here, we study mechanisms underlying the suppression of β-1,3-glucan-triggered plant immunity by the blast fungus Magnaporthe oryzae. We show that an exo-β-1,3-glucanase of the GH17 family, named Ebg1, is important for fungal cell wall integrity and virulence of M. oryzae. Ebg1 can hydrolyze β-1,3-glucan and laminarin into glucose, thus suppressing β-1,3-glucan-triggered plant immunity. However, in addition, Ebg1 seems to act as a PAMP, independent of its hydrolase activity. This Ebg1-induced immunity appears to be dampened by the secretion of an elongation factor 1 alpha protein (EF1α), which interacts and co-localizes with Ebg1 in the apoplast. Future work is needed to understand the mechanisms behind Ebg1-induced immunity and its suppression by EF1α.
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Affiliation(s)
- Hang Liu
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Xunli Lu
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Mengfei Li
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Zhiqin Lun
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Xia Yan
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Changfa Yin
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Guixin Yuan
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Xingbin Wang
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Ning Liu
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Di Liu
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Mian Wu
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Ziluolong Luo
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Yan Zhang
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Vijai Bhadauria
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Jun Yang
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China
| | - Nicholas J Talbot
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, NR4 7UH, UK
| | - You-Liang Peng
- Ministry of Agriculture and Rural Affairs Key Laboratory for Crop Pest Monitoring and Green Control, China Agricultural University, Beijing, 100193, China.
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9
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Wei J, Lin Z, Dai Z, Zhou Z, Bi Y, Zheng R, Hu X, Xu Z, Yuan G, Wang W. Brevilin A inhibits RANKL-induced osteoclast differentiation and bone resorption. In Vitro Cell Dev Biol Anim 2023; 59:420-430. [PMID: 37460875 DOI: 10.1007/s11626-023-00783-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023]
Abstract
Brevilin A (BA) is the primary component of Centipeda minima, which is widely used in Chinese traditional medicine. The anti-inflammatory and anti-tumor properties of BA have been established; however, its function in bone metabolism is not well understood. This study revealed that concentrations of BA below 1.0 µM did not inhibit the proliferation of bone marrow macrophages but did impede the differentiation and bone resorption activity of osteoclasts. Furthermore, BA suppressed the expression of osteoclast-specific genes Mmp9, Acp5, Dc-stamp, Ctsk, and Atp6v0d2. In addition, mTOR, ERK, and NFATc1 activation in bone marrow macrophages were suppressed by BA. As a whole, BA blocks the mTOR and ERK signaling pathways, which is responsible for the development and activity of osteoclasts, and the resorption of bone.
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Affiliation(s)
- Jinfu Wei
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Zihong Lin
- Department of Shantou Central Hospital, Shantou, 515000, Guangdong, China
| | - Zeyu Dai
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Zibin Zhou
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Yonghao Bi
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Ruiwu Zheng
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Xianghua Hu
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Zhaoxin Xu
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, 515000, Guangdong, China.
| | - Weidong Wang
- Department of Bone and Soft Tissue Oncology Surgery, Cancer Hospital of Shantou University Medical College, Shantou, 515000, Guangdong, China.
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10
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Liu D, Lun Z, Liu N, Yuan G, Wang X, Li S, Peng YL, Lu X. Identification and Characterization of Novel Candidate Effector Proteins from Magnaporthe oryzae. J Fungi (Basel) 2023; 9:jof9050574. [PMID: 37233285 DOI: 10.3390/jof9050574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023] Open
Abstract
The fungal pathogen Magnaporthe oryzae secretes a large number of effector proteins to facilitate infection, most of which are not functionally characterized. We selected potential candidate effector genes from the genome of M. oryzae, field isolate P131, and cloned 69 putative effector genes for functional screening. Utilizing a rice protoplast transient expression system, we identified that four candidate effector genes, GAS1, BAS2, MoCEP1 and MoCEP2 induced cell death in rice. In particular, MoCEP2 also induced cell death in Nicotiana benthamiana leaves through Agrobacteria-mediated transient gene expression. We further identified that six candidate effector genes, MoCEP3 to MoCEP8, suppress flg22-induced ROS burst in N. benthamiana leaves upon transient expression. These effector genes were highly expressed at a different stage after M. oryzae infection. We successfully knocked out five genes in M. oryzae, MoCEP1, MoCEP2, MoCEP3, MoCEP5 and MoCEP7. The virulence tests suggested that the deletion mutants of MoCEP2, MoCEP3 and MoCEP5 showed reduced virulence on rice and barley plants. Therefore, those genes play an important role in pathogenicity.
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Affiliation(s)
- Di Liu
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Zhiqin Lun
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Ning Liu
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Guixin Yuan
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Xingbin Wang
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Shanshan Li
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - You-Liang Peng
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Xunli Lu
- MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
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11
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Wu Z, Li X, Chen X, He X, Chen Y, Zhang L, Li Z, Yang M, Yuan G, Shi B, Chen N, Li N, Feng H, Zhou M, Rui G, Xu F, Xu R. Phosphatidyl Inositol 3-Kinase (PI3K)-Inhibitor CDZ173 protects against LPS-induced osteolysis. Front Pharmacol 2023; 13:1021714. [PMID: 36686650 PMCID: PMC9854393 DOI: 10.3389/fphar.2022.1021714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/03/2022] [Indexed: 01/09/2023] Open
Abstract
A major complication of a joint replacement is prosthesis loosening caused by inflammatory osteolysis, leading to the revision of the operation. This is due to the abnormal activation of osteoclast differentiation and function caused by periprosthetic infection. Therefore, targeting abnormally activated osteoclasts is still effective for treating osteolytic inflammatory diseases. CDZ173 is a selective PI3K inhibitor widely used in autoimmune-related diseases and inflammatory diseases and is currently under clinical development. However, the role and mechanism of CDZ173 in osteoclast-related bone metabolism remain unclear. The possibility for treating aseptic prosthesis loosening brought on by inflammatory osteolysis illness can be assessed using an LPS-induced mouse cranial calcium osteolysis model. In this study, we report for the first time that CDZ173 has a protective effect on LPS-induced osteolysis. The data show that this protective effect is due to CDZ173 inhibiting the activation of osteoclasts in vivo. Meanwhile, our result demonstrated that CDZ173 had a significant inhibitory effect on RANKL-induced osteoclasts. Furthermore, using the hydroxyapatite resorption pit assay and podosol actin belt staining, respectively, the inhibitory impact of CDZ173 on bone resorption and osteoclast fusion of pre-OC was determined. In addition, staining with alkaline phosphatase (ALP) and alizarin red (AR) revealed that CDZ173 had no effect on osteoblast development in vitro. Lastly, CDZ173 inhibited the differentiation and function of osteoclasts by weakening the signal axis of PI3K-AKT/MAPK-NFATc1 in osteoclasts. In conclusion, our results highlight the potential pharmacological role of CDZ173 in preventing osteoclast-mediated inflammatory osteolysis and its potential clinical application.
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Affiliation(s)
- Zuoxing Wu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.,The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Xuedong Li
- Department of Medical Laboratory, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, China
| | - Xiaohui Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.,The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Xuemei He
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Yu Chen
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Long Zhang
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Zan Li
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Mengyu Yang
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Baohong Shi
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China
| | - Ning Chen
- Department of Endocrinology, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
| | - Na Li
- Department of Orthopedic Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.,The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Haotian Feng
- Inner Mongolia Dairy Technology Research Institute Co. Ltd., Hohhot, China
| | - Mengyu Zhou
- Department of Dentistry, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Gang Rui
- Department of Orthopedic Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Feng Xu
- Department of Subject Planning, Ninth People's Hospital Shanghai, Jiaotong University School of Medicine, Shanghai, China
| | - Ren Xu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.,The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Center for Skeletal Stem Cell, School of Medicine, Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China.,Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
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12
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Yuan G, Li Z, Lin X, Li N, Xu R. New perspective of skeletal stem cells. Biomater Transl 2022; 3:280-294. [PMID: 36846511 PMCID: PMC9947737 DOI: 10.12336/biomatertransl.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/29/2022] [Accepted: 12/19/2022] [Indexed: 03/01/2023]
Abstract
Tissue-resident stem cells are a group of stem cells distinguished by their capacity for self-renewal and multilineage differentiation capability with tissue specificity. Among these tissue-resident stem cells, skeletal stem cells (SSCs) were discovered in the growth plate region through a combination of cell surface markers and lineage tracing series. With the process of unravelling the anatomical variation of SSCs, researchers were also keen to investigate the developmental diversity outside the long bones, including in the sutures, craniofacial sites, and spinal regions. Recently, fluorescence-activated cell sorting, lineage tracing, and single-cell sequencing have been used to map lineage trajectories by studying SSCs with different spatiotemporal distributions. The SSC niche also plays a pivotal role in regulating SSC fate, such as cell-cell interactions mediated by multiple signalling pathways. This review focuses on discussing the spatial and temporal distribution of SSCs, and broadening our understanding of the diversity and plasticity of SSCs by summarizing the progress of research into SSCs in recent years.
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Affiliation(s)
- Guixin Yuan
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China
| | - Zan Li
- Department of Sports Medicine & Research Centre of Sports Medicine, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xixi Lin
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China
| | - Na Li
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Corresponding authors: Ren Xu, ; Na Li,
| | - Ren Xu
- The First Affiliated Hospital of Xiamen University-ICMRS Collaborating Centre for Skeletal Stem Cell, State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian Province, China,Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Department of Human Anatomy, School of Medicine, Xiamen University, Xiamen, Fujian Province, China,Corresponding authors: Ren Xu, ; Na Li,
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13
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Zhou W, Zhou W, Bi Y, Zhou Z, Liu Y, Ye J, Lin Z, Xie G, Yuan G, Lian Z, Yao G. Integrative Analysis of Necroptosis-Related Signature for Predicting the Prognosis of Osteosarcoma.. [DOI: 10.21203/rs.3.rs-2241039/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Abstract
Background
Osteosarcoma (OS) is the most common and malignant bone tumor among children and adolescents worldwide. Over decades, clinical treatment for osteosarcoma has proven to be intractable. Novel approaches, such as immunotherapy, face immune escape. Thus, exploring potential therapeutic targets for osteosarcoma is an urgent need.
Method
Gene expression data and clinical information were downloaded from Therapeutically Applicable Research to Generate Effective Treatments (TARGET), Gene Expression Omnibus (GEO), and Univariate Cox regression analysis was used to identify prognostic necroptosis-related genes (NRGs). A non-negative matrix factorization algorithm (NMF) was used to cluster patients into various molecular subgroups with NRGs. We dealt with multi-collinearity with the least absolute shrinkage and selection operator (LASSO). Multivariate Cox regression was used to construct the prediction model that divided OS patients into two risk groups. The model's validity was assessed by time-dependent receiver operating characteristic (ROC) analysis. Different expression genes (DEGs) between these two groups were conducted for functional analysis, including gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, Gene Set Enrichment Analysis (GSEA), and Gene Set Variation Analysis (GSVA). Eight algorithms were carried out to evaluate the tumor microenvironment. These marker genes on the single-cell transcriptome were further labeled to explore whether their expression was cell-specific.
Results
Based on the model constructed by 5 NRGs (TLR4, STAT5A, IFNGR1, PYGM, CHMP4C), the patients were divided into two risk groups. Patients in the high-risk group suffered a poorer prognosis than those in the low-risk group. The nomogram was constructed and integrated with clinical features and gene signatures, demonstrating better predictive ability in training and testing cohorts. Immune cell infiltrations were highly associated with the risk score generated by Multivariate Cox. All 5 NRGs can be successfully marked on the feature plot of single-cell RNA-Seq, and two NRGs were associated with cell-specific genes of osteosarcoma pluripotency with statistical significance.
Conclusion
This study can provide a reference for diagnosing molecular subtyping and treating patients with OS.
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Affiliation(s)
| | | | | | | | | | | | | | - Gang Xie
- The Second Affiliated Hospital of Shantou University Medical College
| | - Guixin Yuan
- The Second Affiliated Hospital of Shantou University Medical College
| | - Zhen Lian
- The Second Affiliated Hospital of Shantou University Medical College
| | - Guanfeng Yao
- The Second Affiliated Hospital of Shantou University Medical College
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14
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Lu D, Yao J, Yuan G, Gao Y, Zhang J, Guo X. Immune checkpoint inhibitor-associated new-onset primary adrenal insufficiency: a retrospective analysis using the FAERS. J Endocrinol Invest 2022; 45:2131-2137. [PMID: 35870109 PMCID: PMC9525402 DOI: 10.1007/s40618-022-01845-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/18/2022] [Indexed: 12/20/2022]
Abstract
BACKGROUND Our study aimed to investigate the prevalence and demographic characteristics of immune checkpoint inhibitor-associated primary adrenal insufficiency (ICI-PAI) and to explore the risk factors of its clinical outcome using data from the US FDA Adverse Event Reporting System (FAERS). METHODS This was a retrospective study. All cases of new-onset or newly diagnosed primary adrenal insufficiency associated with FDA-approved ICIs from 1 January 2007 to 31 December 2020 were identified and collected using FAERS. Data on age, sex category, body weight of the participating individuals, the reporting year and the prognosis of cases, and other accompanying endocrinopathies related to ICIs, were analysed. RESULTS The incidence of ICI-PAI was 1.03% (1180/114121). Of the 1180 cases of PAI, 46 were "confirmed PAI", and 1134 were "suspected PAI". Combination therapy with anti-CTLA-4 and anti-PD-1 was related to a higher risk of PAI compared with the anti-PD-1-only group (χ2 = 92.88, p < 0.001). Male and elderly individuals showed a higher risk of ICI-PAI (male vs. female, 1.17% vs. 0.94%, χ2 = 12.55, p < 0.001; age < 65 vs. ≥ 65, 1.20 vs. 1.41%, χ2 = 6.89, p = 0.009). The co-occurrence rate of endocrinopathies other than PAI was 24.3%, which showed a higher trend in patients on nivolumab-ipilimumab treatment than in those on PD-1 inhibitors (χ2 = 3.227, p = 0.072). Body weight was negatively associated with the risk of death in the study population [p = 0.033 for the regression model; B = - 0.017, OR 0.984, 95% CI (0.969-0.998), p = 0.029]. CONCLUSION ICI-associated PAI is a rare but important irAE. Male and elderly patients have a higher risk of ICI-PAI. Awareness among clinicians is critical when patients with a lower body weight develop PAI, which indicates a higher risk of a poor clinical outcome.
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Affiliation(s)
- D. Lu
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - J. Yao
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - G. Yuan
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - Y. Gao
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - J. Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
| | - X. Guo
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034 People’s Republic of China
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15
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Yuan G, Li R, Zang M, Li Q, Hu X, Fan W, Huang W, Ruan J, Pang H, Chen J. 719P Tyrosine kinase inhibitors and/or immune checkpoint inhibitors is required for improving efficacy of transarterial chemoembolization for hepatocellular carcinoma: A large-scale multicenter real-world study of 582 patients. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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16
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Zang M, Li Q, Pang H, Hu X, Li R, Yuan G, Li W, Guo Y, Chen J. 726P Camrelizumab combined with lenvatinib and RALOX-HAIC for hepatocellular carcinoma (HCC) in BCLC stage B and C: A prospective, single-arm, phase II trial (Cal Era study). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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17
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Liu N, Qi L, Huang M, Chen D, Yin C, Zhang Y, Wang X, Yuan G, Wang RJ, Yang J, Peng YL, Lu X. Comparative Secretome Analysis of Magnaporthe oryzae Identified Proteins Involved in Virulence and Cell Wall Integrity. Genomics Proteomics Bioinformatics 2022; 20:728-746. [PMID: 34284133 PMCID: PMC9880818 DOI: 10.1016/j.gpb.2021.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/11/2020] [Accepted: 03/10/2021] [Indexed: 01/31/2023]
Abstract
Plant fungal pathogens secrete numerous proteins into the apoplast at the plant-fungus contact sites to facilitate colonization. However, only a few secretory proteins were functionally characterized in Magnaporthe oryzae, the fungal pathogen causing rice blast disease worldwide. Asparagine-linked glycosylation 3 (Alg3) is an α-1,3-mannosyltransferase functioning in the N-glycan synthesis of N-glycosylated secretory proteins. Fungal pathogenicity and cell wall integrity are impaired in Δalg3 mutants, but the secreted proteins affected in Δalg3 mutants are largely unknown. In this study, we compared the secretomes of the wild-type strain and the Δalg3 mutant and identified 51 proteins that require Alg3 for proper secretion. These proteins were predicted to be involved in metabolic processes, interspecies interactions, cell wall organization, and response to chemicals. Nine proteins were selected for further validation. We found that these proteins were localized at the apoplastic region surrounding the fungal infection hyphae. Moreover, the N-glycosylation of these proteins was significantly changed in the Δalg3 mutant, leading to the decreased protein secretion and abnormal protein localization. Furthermore, we tested the biological functions of two genes, INV1 (encoding invertase 1, a secreted invertase) and AMCase (encoding acid mammalian chinitase, a secreted chitinase). The fungal virulence was significantly reduced, and the cell wall integrity was altered in the Δinv1 and Δamcase mutant strains. Moreover, the N-glycosylation was essential for the function and secretion of AMCase. Taken together, our study provides new insight into the role of N-glycosylated secretory proteins in fungal virulence and cell wall integrity.
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Affiliation(s)
- Ning Liu
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Linlu Qi
- MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Manna Huang
- MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Deng Chen
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Changfa Yin
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Yiying Zhang
- MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Xingbin Wang
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Guixin Yuan
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China,Graduate School of China Agricultural University, Beijing 100193, China
| | - Rui-Jin Wang
- MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Jun Yang
- MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - You-Liang Peng
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China
| | - Xunli Lu
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, Beijing 100193, China,Corresponding author.
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18
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Wang Z, Zhao Z, Xia Y, Cai Z, Wang C, Shen Y, Liu R, Qin H, Jia J, Yuan G. Potential biomarkers in the fibrosis progression of nonalcoholic steatohepatitis (NASH). J Endocrinol Invest 2022; 45:1379-1392. [PMID: 35226336 DOI: 10.1007/s40618-022-01773-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/17/2022] [Indexed: 12/13/2022]
Abstract
PURPOSE Fibrosis is the only histological feature reflecting the severity and prognosis of nonalcoholic steatohepatitis (NASH). We aim to explore novel genes associated with fibrosis progression in NASH. METHODS Two human RNA-seq datasets were downloaded from the public database. Weighted gene co-expression network analysis (WGCNA) was used to identify their co-expressed modules and further bioinformatics analysis was performed to identify hub genes within the modules. Finally, based on two single-cell RNA-seq datasets from mice and one microarray dataset from human, we further observed the expression of hub genes in different cell clusters and liver tissues. RESULTS 7 hub genes (SPP1, PROM1, SOX9, EPCAM, THY1, CD34 and MCAM) associated with fibrosis progression were identified. Single-cell RNA-seq analysis revealed that those hub genes were expressed by different cell clusters such as cholangiocytes, natural killer (NK) cells, and hepatic stellate cells (HSCs). We also found that SPP1 and CD34 serve as markers of different HSCs clusters, which are associated with inflammatory response and fibrogenesis, respectively. Further study suggested that SPP1, SOX9, MCAM and THY1 might be related to NASH-associated hepatocellular carcinoma (HCC). Receiver operating characteristic (ROC) analysis showed that the high expression of these genes could well predict the occurrence of HCC. At the same time, there were significant differences in metabolism-related pathway changes between different HCC subtypes, and SOX9 may be involved in these changes. CONCLUSIONS The present study identified novel genes associated with NASH fibrosis and explored their effects on fibrosis from a single-cell perspective that might provide new ideas for the early diagnosis, monitoring, evaluation, and prediction of fibrosis progression in NASH.
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Affiliation(s)
- Z Wang
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - Z Zhao
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - Y Xia
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - Z Cai
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - C Wang
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - Y Shen
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - R Liu
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - H Qin
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China
| | - J Jia
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China.
| | - G Yuan
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, China.
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19
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Abstract
Dentin is a major mineralized component of teeth. Odontoblasts are responsible for synthesis and secretion of dentin matrix. Previously, it has been demonstrated in a cell culture system that the E3 ubiquitin ligase, murine double minute 2 (Mdm2), promotes odontoblast-like differentiation of mouse dental papilla cells (mDPCs) by ubiquitinating p53 and the odontoblast-specific substrate Dlx3. However, whether Mdm2 plays an essential role in vivo in odontoblast differentiation and dentin formation remains unknown. In this study, we investigated the in vivo functions of Mdm2 using Dmp1-Cre;Mdm2 flox/flox mice combined with multiple histological and molecular biological methods. The results showed that Mdm2 deletion in the odontoblast layer led to defects in odontoblast differentiation and dentin formation. Unexpectedly, specific inhibition of the Mdm2-p53 axis in wild-type mice by injection of a small-molecule inhibitor Nutlin-3a indicated that the role of Mdm2 in dentinogenesis was p53 independent, which was inconsistent with the previous in vitro study. In situ proximity ligation assay (PLA) showed that Mdm2 interacted with and ubiquitinated Dlx3 in the odontoblast nucleus of mouse molars. Dlx3 promoted the translocation of Mdm2 to the nucleus, and in turn, the nuclear Mdm2 mediated ubiquitination of Dlx3 and promoted the odontoblast-like differentiation of mDPCs. Dlx3 interacted with Mdm2 through its C-terminal domain. Deletion of the C-terminal domain of Dlx3 reversed the enhanced odontoblast-like differentiation and the activation of Dspp promoter mediated by overexpression of wild-type or nuclear Mdm2. Our findings suggest that nuclear Mdm2 mediates ubiquitination of the transcription factor Dlx3, which is essential for Dlx3 transcriptional activity on Dspp as well as subsequent odontoblast differentiation and dentin formation.
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Affiliation(s)
- H. Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
| | - J. Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
| | - Z. Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - G. Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - G. Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
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20
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Clément K, Argente J, Dollfus H, Han J, Haqq A, Martos-Moreno G, Mittleman R, Stewart M, Webster M, Yanovski J, Yuan G, Haws R. Étude de phase 3 sur l’efficacité de setmélanotide chez des patients ayant un syndrome de Bardet-Biedl : résultats contrôlés par placebo. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Argente J, Clément K, Dollfus H, Han J, Haqq A, Martos-Moreno G, Mittleman R, Stewart M, Webster M, Yanovski J, Yuan G, Haws R. Étude de phase 3 sur le setmélanotide chez des patients ayant un syndrome de Bardet-Biedl : résultats contrôlés par placebo. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Wu Z, Li C, Chen Y, Liu Q, Li N, He X, Li W, Shen R, Li L, Wei C, Shao S, Fu F, Ding J, Sun X, Wang D, Yuan G, Su Y, Zhao J, Xu J, Xu R, Xu X, Xu F. Chrysin Protects Against Titanium Particle-Induced Osteolysis by Attenuating Osteoclast Formation and Function by Inhibiting NF-κB and MAPK Signaling. Front Pharmacol 2022; 13:793087. [PMID: 35401243 PMCID: PMC8985127 DOI: 10.3389/fphar.2022.793087] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
Bone homeostasis only exists when the physical function of osteoblast and osteoclast stays in the balance between bone formation and resorption. Bone resorption occurs when the two processes are uncoupled, shifting the balance in favour of bone resorption. Excessive activation of osteoclasts leads to a range of osteolytic bone diseases including osteoporosis, aseptic prosthesis loosening, rheumatoid arthritis, and osteoarthritis. Receptor activator of nuclear factor kappa-B ligand (RANKL) and its downstream signaling pathways are recognized as key mediators that drive the formation and activation of osteoclastic function. Hence, osteoclast formation and/or its function remain as dominant targets for research and development of agents reaching the treatment towards osteolytic diseases. Chrysin (CHR) is a flavonoid with a wide range of anti-inflammatory and anti-tumor effects. However, its effect on osteoclasts remains unknown. In this study, we found the effects of CHR on inhibiting osteoclast differentiation which were assessed in terms of the number and size of TRAcP positive multinucleated osteoclasts (OCs). Further, the inhibitory effects of CHR on bone resorption and osteoclast fusion of pre-OC were assessed by hydroxyapatite resorption pit assay and F-actin belts staining; respectively. Western blotting analysis of RANKL-induced signaling pathways and immunofluorescence analysis for p65 nuclear translocation in response to RANKL-induced osteoclasts were used to analyze the mechanism of action of CHR affecting osteoclasts. Lastly, the murine calvarial osteolysis model revealed that CHR could protect against particle-induced bone destruction in vivo. Collectively, our data strongly suggested that CHR with its promising anti-tumor effects would also be a potential therapeutic agent for osteolytic diseases.
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Affiliation(s)
- Zuoxing Wu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Chen Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Yu Chen
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Qian Liu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Na Li
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Xuemei He
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Weibin Li
- Xiang’an Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Rong Shen
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
| | - Li Li
- Pharmaceutic College, Guangxi Medical University, Nanning, China
| | - Chenming Wei
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Siyuan Shao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Fangsheng Fu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Jiaxin Ding
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Xiaochen Sun
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Dairong Wang
- Department of Orthopedics, Guilin People’s Hospital, Guilin, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Yiji Su
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Jinmin Zhao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Ren Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, China
- Department of Orthopedic Surgery, The First Afiliated Hospital of Xiamen University, Xiamen, China
- *Correspondence: Ren Xu, ; Xin Xu, ; Feng Xu,
| | - Xin Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
- *Correspondence: Ren Xu, ; Xin Xu, ; Feng Xu,
| | - Feng Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
- Department of Subject Planning, Ninth Peoples Hospital Shanghai, Jiaotong University School of Medicine, Shanghai, China
- *Correspondence: Ren Xu, ; Xin Xu, ; Feng Xu,
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23
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Abstract
Periodontitis is a complex inflammatory disease affecting the supporting structures of teeth and is associated with systemic inflammatory disorders. Regulator of G-protein signaling 12 (RGS12), the largest protein in the RGS protein family, plays a crucial role in the development of inflammation and bone remodeling. However, the role and mechanism(s) by which RGS12 may regulate periodontitis have not been elucidated. Here, we showed that ablation of RGS12 in Mx1+ hematopoietic cells blocked bone loss in the ligature-induced periodontitis model, as evidenced morphometrically and by micro-computed tomography analysis of the alveolar bone. Moreover, hematopoietic cell-specific deletion of RGS12 inhibited osteoclast formation and activity as well as the production of inflammatory cytokines such as IL1β, IL6, and TNFα in the diseased periodontal tissue. In the in vitro experiments, we found that the overexpression of RGS12 promoted the reprogramming of macrophages to the proinflammatory M1 type, but not the anti-inflammatory M2 type, and enhanced the ability of macrophages for migration. Conversely, knockdown of RGS12 in macrophages inhibited the production of inflammatory cytokines and migration of macrophages in response to lipopolysaccharide stimulation. Our results demonstrate for the first time that inhibition of RGS12 in macrophages is a promising therapeutic target for the treatment of periodontitis.
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Affiliation(s)
- G Yuan
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C Fu
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.,Department of Orthodontics, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - S T Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - D Y Yuh
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei
| | - G Hajishengallis
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - S Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,The Penn Center for Musculoskeletal Disorders, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, USA
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24
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Affiliation(s)
- J Guo
- From the Department of Endocrinology, Peking University First Hospital, Beijing, China
| | - N Gu
- From the Department of Endocrinology, Peking University First Hospital, Beijing, China
| | - W Wang
- From the Department of Endocrinology, Peking University First Hospital, Beijing, China
| | - G Yuan
- From the Department of Endocrinology, Peking University First Hospital, Beijing, China
| | - J Zhang
- From the Department of Endocrinology, Peking University First Hospital, Beijing, China
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25
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Xie G, Liu W, Lian Z, Xie D, Yuan G, Ye J, Lin Z, Wang W, Zeng J, Shen H, Wang X, Feng H, Cong W, Yao G. Spleen tyrosine kinase (SYK) inhibitor PRT062607 protects against ovariectomy-induced bone loss and breast cancer-induced bone destruction. Biochem Pharmacol 2021; 188:114579. [PMID: 33895161 DOI: 10.1016/j.bcp.2021.114579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 02/05/2023]
Abstract
Osteolytic diseases, including breast cancer-induced osteolysis and postmenopausal osteoporosis, are attributed to excessive bone resorption by osteoclasts. Spleen tyrosine kinase (SYK) is involved in osteoclastogenesis and bone resorption, whose role in breast cancer though remains controversial. Effects of PRT062607 (PRT), a highly specific inhibitor of SYK, on the osteoclast and breast cancer functionalities are yet to be clarified. This study demonstrated the in vitro inhibitory actions of PRT on the osteoclast-specific gene expression, bone resorption, and osteoclastogenesis caused by receptor activator of nuclear factor kappa B ligand (RANKL), as well as its in vitro suppressive effects on the growth, migration and invasion of breast carcinoma cell line MDA-MB-231, which were achieved through PLCγ2 and PI3K-AKT-mTOR pathways. Further, we proved that PRT could prevent post-ovariectomy (OVX) loss of bone and breast cancer-induced bone destruction in vivo, which agreed with the in vitro outcomes. In conclusion, our findings suggest the potential value of PRT in managing osteolytic diseases mediated by osteoclasts.
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Affiliation(s)
- Gang Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Wenjie Liu
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Dantao Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Jiajie Ye
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Zihong Lin
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Weidong Wang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Jican Zeng
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Huaxing Shen
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Xinjia Wang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Haotian Feng
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China; Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi, China; School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Wei Cong
- Institute of Translational Medicine, Shanghai University, Shanghai, China.
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China.
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26
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Dai J, Yuan G, Li Y, Zhou H. MicroRNA-596 is epigenetically inactivated and suppresses prostatic cancer cell growth and migration via regulating Wnt/β-catenin signaling. Clin Transl Oncol 2021; 23:1394-1404. [PMID: 33387246 DOI: 10.1007/s12094-020-02536-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/24/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Although studies have reported that miR-596 extensively participates in multiple cancer progression, the biological mechanisms and effects of miR-596 in prostatic cancer remain unclear. The literature is aimed to reveal the function and possible molecular mechanisms of miR-596 in prostatic cancer carcinogenesis. MATERIALS AND METHODS qRT-PCR was applied to examine miR-596 expression in prostatic cancer cell lines and samples, also methylation-specific PCR was used to detect the methylation status of the promoter CpG islands in prostatic cancer samples. Meanwhile, the tumor-related effects of miR-596 were detected via cell viability, clone formation assay, migration assay, flow cytometric and AO/EB assay. qRT-PCR and Western blots were applied to investigate the function of miR-596 on malignant behavior in prostatic cancer cells. RESULTS We found that miR-596 mRNA was decreased in prostatic cancer samples and cell lines. miR-596 mRNA level was also correlated to cancer stage, Gleason scores, while miR-596 promoter methylation was related to cancer tumor stage, Gleason score and preoperative PSA levels. miR-596 inhibited the cell growth and activity by causing cell apoptosis, and also suppressed the migration of prostatic cancer cells by revealing the epithelial-mesenchymal transition process. In addition, Western blot indicates that miR-596 overexpression deregulated Wnt/β-catenin signaling, by restraining phosphorylation levels of β-catenin and expression levels of downstream targets. CONCLUSIONS In summary, this research indicates that miR-596 overexpression could be potentially useful in the cell growth and migration of prostatic cancer and serves as a potential molecular marker in prostatic cancer.
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Affiliation(s)
- J Dai
- Chongqing University Cancer Hospital, Chongqing, China
| | - G Yuan
- Chongqing University Cancer Hospital, Chongqing, China
| | - Y Li
- Chongqing University Cancer Hospital, Chongqing, China
| | - H Zhou
- Chongqing University Cancer Hospital, Chongqing, China.
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27
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Liu W, Xie G, Yuan G, Xie D, Lian Z, Lin Z, Ye J, Zhou W, Zhou W, Li H, Wang X, Feng H, Liu Y, Yao G. 6'-O-Galloylpaeoniflorin Attenuates Osteoclasto-genesis and Relieves Ovariectomy-Induced Osteoporosis by Inhibiting Reactive Oxygen Species and MAPKs/c-Fos/NFATc1 Signaling Pathway. Front Pharmacol 2021; 12:641277. [PMID: 33897430 PMCID: PMC8058459 DOI: 10.3389/fphar.2021.641277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/19/2021] [Indexed: 02/05/2023] Open
Abstract
Emerging evidence suggests bright prospects of some natural antioxidants in the treatment of osteoporosis. 6'-O-Galloylpaeoniflorin (GPF), an antioxidant isolated from peony roots (one of very widely used Oriental medicines, with various anti-inflammatory, antitumor, and antioxidant activities), shows a series of potential clinical applications. However, its effects on osteoporosis remain poorly investigated. The current study aimed to explore whether GPF can attenuate osteoclastogenesis and relieve ovariectomy-induced osteoporosis via attenuating reactive oxygen species (ROS), and investigate the possible mechanism. After the culture of primary murine bone marrow-derived macrophages/monocytes were induced by the use of macrophage colony-stimulating factor (M-CSF) and the receptor activator of NF-κB ligand (RANKL) and then treated with GPF. Cell proliferation and viability were assessed by Cell Counting Kit-8 (CCK-8) assay. Thereafter, the role of GPF in the production of osteoclasts and the osteogenic resorption of mature osteoclasts were evaluated by tartrate-resistant acid phosphatase (TRAP) staining, podosome belt formation, and resorption pit assay. Western blotting and qRT-PCR examination were performed to evaluate proteins' generation and osteoclast-specific gene levels, respectively. The ROS generation in cells was measured in vitro by 2',7'-Dichlorodi-hydrofluorescein diacetate (DCFH-DA). Ovariectomy-induced osteoporosis mouse administered with GPF or vehicle was performed to explore the in vivo potential of GPF, then a micro-CT scan was performed in combination with histological examination for further analysis. GPF suppressed the formation of osteoclasts and podosome belts, as well as bone resorption when induced by RANKL through affecting intracellular ROS activity, MAPKs signaling pathway, and subsequent NFATc1 translocation and expression, as well as osteoclast-specific gene expression in vitro. In vivo study suggested that exposure to GPF prevented osteoporosis-related bone loss in the ovariectomized mice. These findings indicate that GPF attenuates osteoclastogenesis and relieves ovariectomy-induced osteoporosis by inhibiting ROS and MAPKs/c-Fos/NFATc1 signaling pathway. This suggested that GPF may be potentially used to treat bone diseases like periodontitis, rheumatoid arthritis, and osteoporosis associated with osteoclasts.
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Affiliation(s)
- Wenjie Liu
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Gang Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Dantao Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Zihong Lin
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Jiajie Ye
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Wenyun Zhou
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Weijun Zhou
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Henghui Li
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Xinjia Wang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
| | - Haotian Feng
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, China
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, China
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Ying Liu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- *Correspondence: Ying Liu, ; Guanfeng Yao,
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, China
- *Correspondence: Ying Liu, ; Guanfeng Yao,
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28
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Abstract
Oral squamous cell carcinoma (OSCC) is the most common head and neck cancer characterized by aggressive local invasion and metastasis. The pathogenesis of OSCC is mainly due to the accumulation of genetic alterations in epithelial cells, but the underlying mechanism for its development remains unclear. Here, we found that the expression level of regulator of G protein signaling 12 (RGS12) was significantly reduced in human OSCC. To understand the role and mechanism of RGS12 in OSCC, we generated a novel RGS12 global knockout (CMVCre/+; RGS12fl/fl) mouse model by crossing RGS12fl/fl mice with CMV-Cre transgenic mice and then further induced the mice to develop OSCC by using 4-nitroquinoline 1-oxide (4NQO). Deletion of RGS12 exhibited aggressive OSCC in the tongue compared with the control RGS12fl/fl mice. Knockdown of RGS12 in OSCC cells significantly increased cell proliferation and migration. Mechanistically, we found that RGS12 associated with phosphatase and tension homolog (PTEN) via the PDZ domain to upregulate the phosphorylation and SUMOylation of PTEN and then correspondingly inactivated the AKT/mTOR signaling pathway. To test the potential therapeutic effect of RGS12 on OSCC, we overexpressed RGS12 in OSCC cells and found a significant inhibition of cancer cell proliferation and migration. Moreover, subcutaneous inoculation of RGS12-overexpressed OSCC cells in NOD scid mice showed a significant reduction in tumor formation. Our findings reveal that RGS12 is an essential tumor suppressor and highlights RGS12 as a potential therapeutic target and prognostic biomarker of OSCC.
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Affiliation(s)
- C Fu
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - G Yuan
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - S T Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - D Zhang
- Department of Orthodontics, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.,Department of Orthodontics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - S Yang
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Center for Innovation and Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, USA.,The Penn Center for Musculoskeletal Disorders, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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29
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Abstract
WW domain-containing E3 Ub-protein ligase 2 (WWP2) belongs to the homologous to E6AP C-terminus (HECT) E3 ligase family. It has been explored to regulate osteogenic differentiation, chondrogenesis, and palatogenesis. Odontoblasts are terminally differentiated mesenchymal cells, which contribute to dentin formation in tooth development. However, it remained unknown whether WWP2 participated in odontoblast differentiation. In this study, WWP2 was found to be expressed in mouse dental papilla cells (mDPCs), odontoblasts, and odontoblastic-induced mDPCs by immunohistochemistry and Western blotting. Besides, WWP2 expression was decreased in the cytoplasm but increased in the nuclei of differentiation-induced mDPCs. When Wwp2 was knocked down, the elevated expression of odontoblast marker genes (Dmp1 and Dspp) in mDPCs induced by differentiation medium was suppressed. Meanwhile, a decrease of alkaline phosphatase (ALP) activity was observed by ALP staining, and reduced formation of mineralized matrix nodules was demonstrated by Alizarin Red S staining. Overexpression of WWP2 presented opposite results to knockdown experiments, suggesting that WWP2 promoted odontoblastic differentiation of mDPCs. Further investigation found that WWP2 was coexpressed and interacted with KLF5 in the nuclei, leading to ubiquitination of KLF5. The PPPSY (PY2) motif of KLF5 was essential for its physical binding with WWP2. Also, cysteine 838 (Cys838) of WWP2 was the active site for ubiquitination of KLF5, which did not lead to proteolysis of KLF5. Then, KLF5 was confirmed to be monoubiquitinated and transactivated by WWP2, which promoted the expression of KLF5 downstream genes Dmp1 and Dspp. Deletion of the PY2 motif of KLF5 or mutation of Cys838 of WWP2 reduced the upregulation of Dmp1 and Dspp. Besides, lysine (K) residues K31, K52, K83, and K265 of KLF5 were verified to be crucial to WWP2-mediated KLF5 transactivation. Taken together, WWP2 promoted odontoblastic differentiation by monoubiquitinating KLF5.
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Affiliation(s)
- J Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - H Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - Y Xue
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - R Jin
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - G Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - Z Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
| | - G Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, HuBei, China
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30
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Li Q, Chen M, Cao M, Yuan G, Hu X, Dai W, Zang M, Cheng X, Huang J, Hou J, Chen J. 182P Lenvatinib (LEN) plus anti-PD-1 antibodies vs LEN alone for advanced hepatocellular carcinoma (HCC): A real-world study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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31
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Lin X, Yuan G, Li Z, Zhou M, Hu X, Song F, Shao S, Fu F, Zhao J, Xu J, Liu Q, Feng H. Ellagic acid protects ovariectomy-induced bone loss in mice by inhibiting osteoclast differentiation and bone resorption. J Cell Physiol 2020; 235:5951-5961. [PMID: 32026468 DOI: 10.1002/jcp.29520] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 01/09/2020] [Indexed: 02/05/2023]
Abstract
Osteoporosis is a devastating disease that features reduced bone quantity and microstructure, which causes fragility fracture and increases mortality, especially in the aged population. Due to the long-term side-effects of current drugs for osteoporosis, it is of importance to find other safe and effective medications. Ellagic acid (EA) is a phenolic compound found in nut galls, plant extracts, and fruits, and exhibits antioxidant and antineoplastic effects. Here, we showed that EA attenuated the formation and function of osteoclast dose-dependently. The underlying mechanism was further discovered by western blot, immunofluorescence assay, and luciferase assay, which elucidated that EA suppressed osteoclastogenesis and bone resorption mainly through attenuating receptor activator of nuclear factor-κB (NF-κB) ligand-induced NF-κB activation and extracellular signal-regulated kinase signaling pathways, accompanied by decreased protein expression of nuclear factor of activated T-cells calcineurin-dependent 1 and c-Fos. Moreover, EA inhibits osteoclast marker genes expression including Dc-stamp, Ctsk, Atp6v0d2, and Acp5. Intriguingly, we also found that EA treatment could significantly protect ovariectomy-induced bone loss in vivo. Conclusively, this study suggested that EA might have the therapeutic potentiality for preventing or treating osteoporosis.
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Affiliation(s)
- Xixi Lin
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Zhaoning Li
- Department of orthopedics, Dongguan people's hospital, Dongguan, Guangdong, China
| | - Mengyu Zhou
- Department of Dentistry, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xianghua Hu
- Department of Orthopedics, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Fangming Song
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Siyuan Shao
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Fangsheng Fu
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Jinmin Zhao
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Qian Liu
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Haotian Feng
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
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Zhao H, Zhou X, Yuan G, Hou Z, Sun H, Zhai N, Huang B, Li X. CDC6 is up-regulated and a poor prognostic signature in glioblastoma multiforme. Clin Transl Oncol 2020; 23:565-571. [PMID: 32661826 DOI: 10.1007/s12094-020-02449-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 07/02/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Glioblastoma multiforme (GBM) represents the most common and the most malignant type of brain tumor. Cell division cycle 6 (CDC6), a gene associated with DNA replication initiation, has been proven to be associated with the prognosis of multiple tumors. In this study, we aim to explore the association between CDC6 expression and GBM carcinogenesis and prognosis. METHODS CDC6 expression in normal cells and GBM cells was explored by analyzing TCGA dataset, as well as by RT-PCR and western blot methods. Survival analysis was performed by the Kaplan-Meier method. Multivariate Cox-regression analysis was adopted to estimate the independence of CDC6 as a GBM prognostic factor. RESULTS AND CONCLUSIONS Elevated CDC6 levels in GBM tumor tissues compared with those in normal brain tissues were illustrated by analyzing the gene expression profiles from TCGA dataset, and confirmed by RT-PCR and western blot assays in GBM tumor and normal human astrocyte cell lines. Kaplan-Meier analysis indicated the negative influence of high CDC6 expression on GBM overall survival (OS) probability and days to progression (D2P) after initial treatment, but not on days to recurrence (D2R) after initial treatment. Multivariate Cox regression analysis showed CDC6 as an independent signature marker gene for GBM prognosis. In addition, the combination of CDC6 mRNA expression and CpG island methylator phenotype (CIMP) could sensitively predict 3-year OS and D2P. In conclusion, our study uncovered the role of CDC6 in GBM carcinogenesis and prognosis for the first time, which could shed new light on GBM diagnosis and treatment.
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Affiliation(s)
- H Zhao
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China.,Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - X Zhou
- Department of Paediatric Neurology, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - G Yuan
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - Z Hou
- Department of Pathology, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - H Sun
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - N Zhai
- Department of Neurosurgery, Zibo Central Hospital Affiliated to Shandong University, Zibo, 255036, Shandong, China
| | - B Huang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, 250012, Jinan, China
| | - X Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, 250012, Shandong, China. .,Shandong Key Laboratory of Brain Function Remodeling, 250012, Jinan, China.
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Wang H, Liu JL, Wu XX, Zhang SQ, Zhang ZK, Pan WW, Yuan G, Yuan CL, Ren YL, Lei W. Ultra-long high quality catalyst-free WO 3 nanowires for fabricating high-performance visible photodetectors. Nanotechnology 2020; 31:274003. [PMID: 32209740 DOI: 10.1088/1361-6528/ab8327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work presents a study on the controlled growth of WO3 nanowires via chemical vapor deposition without catalyst, and their potential applications in visible photodetectors. The influence of growth conditions on the morphology of WO3 nanowires is studied in order to understand the growth mechanism of WO3 nanowires, and ultra-long (60 [Formula: see text], the longest one ever reported) WO3 nanowires with a spindle shape are achieved by optimizing the growth conditions. It was found that the length of WO3 nanowires increases from 15 [Formula: see text] to 60 [Formula: see text] with increasing the argon carrier gas flow rate from 30 sccm to 90 sccm, and then saturates with further increasing the argon carrier gas flow rate. However, the length of WO3 nanowires reduces from 60 [Formula: see text] to 19 [Formula: see text] with increasing the tube inner pressure from 2.5 Torr to 3.5 Torr. The photoconductor detectors based on WO3 single nanowires present excellent device performance with a responsivity as high as 19 A W-1 at a bias of 0.1 V, a detectivity as high as 1.06 × 1011 Jones, and a response (rising and decay) time as short as 8 ms under the illumination of a 404 nm laser. These results indicate the great potential of WO3 nanowires for applications in fabricating high performance visible photodetectors.
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Affiliation(s)
- H Wang
- Department of Electrical, Electronic and Computer Engineering, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia. These authors contributed to the work equally
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Abstract
Dentin is an important structural component of the tooth. Odontoblast differentiation is an essential biological process that guarantees normal dentin formation, which is precisely regulated by various proteins. Murine double minute 2 (Mdm2) is an E3 ubiquitin ligase, and it plays a pivotal role in the differentiation of different cell types, such as osteoblasts and myoblasts. However, whether Mdm2 plays a role in odontoblast differentiation remains unknown. Here, we investigated the spatiotemporal expression of Mdm2 by immunostaining and found that Mdm2 was highly expressed in the odontoblasts and slightly in the dental papilla cells of mouse incisors and molars. Gene knockdown and overexpression experiments verified that Mdm2 promoted the odontoblast-like differentiation of mouse dental papilla cells (mDPCs). Intranuclear colocalization and physical interaction between Mdm2 and distal-less 3 (Dlx3), a transcription factor important for odontoblast differentiation, was found during the odontoblast-like differentiation of mDPCs by double immunofluorescence and immunoprecipitation. Mdm2 was proved to monoubiquitinate Dlx3, which enhanced the expression of Dlx3 target gene Dspp. In addition, p53, the canonical substrate of Mdm2, was validated to be also ubiquitinated but degraded by Mdm2 during the odontoblast-like differentiation of mDPCs. Gene knockdown experiments confirmed that p53 inhibited the odontoblast-like differentiation of mDPCs. p53 and Mdm2 double knockdown partially rescued the reduced odontoblast-like differentiation by knockdown of Mdm2 alone. Taken together, our study revealed that Mdm2 promoted the odontoblast-like differentiation of mDPCs by ubiquitinating both Dlx3 and p53. On one hand, the monoubiquitination of Dlx3 by Mdm2 led to upregulation of Dspp, which is a marker of the odontoblast differentiation. On the other hand, ubiquitination of p53 by Mdm2 resulted in its degradation, which eliminated the inhibitory effect of p53 on the odontoblast-like differentiation of mDPCs.
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Affiliation(s)
- H Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - G Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - J Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Z Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - G Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Shao S, Fu F, Wang Z, Song F, Li C, Wu ZX, Ding J, Li K, Xiao Y, Su Y, Lin X, Yuan G, Zhao J, Liu Q, Xu J. Diosmetin inhibits osteoclast formation and differentiation and prevents LPS-induced osteolysis in mice. J Cell Physiol 2019; 234:12701-12713. [PMID: 30515812 DOI: 10.1002/jcp.27887] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 11/13/2018] [Indexed: 02/05/2023]
Abstract
Osteolytic bone diseases are closely linked to the over-activation of osteoclasts and enhancement of bone resorption. It has become a major health issue in orthopedic practice worldwide. Inhibition of osteoclasts is proposed to be the main treatment for osteolytic disorders. Diosmetin (DIO) is a natural flavonoid with properties of antioxidant, anti-infection, and antishock. The effect of DIO on osteoclast differentiation is poorly understood. In this study project, we found that DIO could inhibit osteoclastic formation induced by receptor activator of nuclear factor kappa-B ligand (RANKL) in a dose-dependent manner. The expression of the osteoclast differentiation marker genes, cathepsin K, nuclear factor of activated T-cells 1 (NFATc1), Acp5, Ctr, Atp6v0d2, and Mmp9 were also decreased by the treatment of DIO. In addition, DIO attenuated the formation of actin ring and the ability of bone resorption. Further, the western blotting showed that DIO inhibits the phosphorylation of the mitogen-activated protein kinases signaling pathway induced by RANKL, accompanied by the downregulation of NFATc1 and c-Fos expression. We also found that DIO could reduce the accumulation of reactive oxygen species (ROS) induced by RANKL. In vivo, the study revealed that DIO can significantly reduce LPS-induced osteolysis in mice. Collectively, our study shows that DIO can inhibit osteoclast formation and activation, and could serve as a potential therapeutic drug for osteolytic bone diseases.
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Affiliation(s)
- Siyuan Shao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Fangsheng Fu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Ziyi Wang
- School of Biomedical Sciences, the University of Western Australia, Perth, Western Australia, Australia
| | - Fangming Song
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
- School of Biomedical Sciences, the University of Western Australia, Perth, Western Australia, Australia
| | - Chen Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Zuo-Xing Wu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jiaxing Ding
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Kai Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Yu Xiao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Yiji Su
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Xixi Lin
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Jinmin Zhao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Qian Liu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
- Department of Trauma Orthopedic and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jiake Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
- School of Biomedical Sciences, the University of Western Australia, Perth, Western Australia, Australia
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Wu Z, Wu H, Li C, Fu F, Ding J, Shao S, Li K, Yu X, Su Y, Liang J, Lin X, Yuan G, Zhou J, Song F, Zhao J, Xu J, Liu Q, Xu F. Daphnetin attenuates LPS-induced osteolysis and RANKL mediated osteoclastogenesis through suppression of ERK and NFATc1 pathways. J Cell Physiol 2019; 234:17812-17823. [PMID: 30815894 DOI: 10.1002/jcp.28408] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 02/05/2023]
Abstract
Aseptic prosthetic loosening and periprosthetic infection resulting in inflammatory osteolysis is a leading complication of total joint arthroplasty (TJA). Excessive bone destruction around the bone and prosthesis interface plays a key role in the loosening prostheses leading to revision surgery. The bacterial endotoxins or implant-derived wear particles-induced inflammatory response is the major cause of the elevated osteoclast formation and activity. Thus, agents or compounds that can attenuate the inflammatory response and/or inhibit the elevated osteoclastogenesis and excessive bone resorption would provide a promising therapeutic avenue to prevent aseptic prosthetic loosening in TJA. Daphnetin (DAP), a natural coumarin derivative, is clinically used in Traditional Chinese Medicine for the treatment of rheumatoid arthritis due to its anti-inflammatory properties. In this study, we report for the first time that DAP could protect against lipopolysaccharide-induced inflammatory bone destruction in a murine calvarial osteolysis model in vivo. This protective effect of DAP can in part be attributed to its direct inhibitory effect on RANKL-induced osteoclast differentiation, fusion, and bone resorption in vitro. Biochemical analysis found that DAP inhibited the activation of the ERK and NFATc1 signaling cascades. Collectively, our findings suggest that DAP as a natural compound has potential for the treatment of inflammatory osteolysis.
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Affiliation(s)
- Zuoxing Wu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Hailun Wu
- Department of Gynecological Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Chen Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Fangsheng Fu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jiaxin Ding
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Siyuan Shao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Kai Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiao Yu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Yuangang Su
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jiamin Liang
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Xixi Lin
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Juan Zhou
- Department of Gynecological Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Fangming Song
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jinmin Zhao
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jiake Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Qian Liu
- Department of Trauma Orthopedic and Hand Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Feng Xu
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
- Department of Subject Planning Shanghai, Ninth People's Hospital Shanghai, Jiaotong University School of Medicine, Shanghai, China
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Li C, Wu Z, Yuan G, Fang Z, Lin X, Pu R, Kang Y, Li L, Shao S, Ding J, Zhao J, Liu Q, Qin A. Vx-11e protects against titanium-particle-induced osteolysis and osteoclastogenesis by supressing ERK activity. Biochem Biophys Res Commun 2019; 514:1244-1250. [PMID: 31109651 DOI: 10.1016/j.bbrc.2019.05.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 05/06/2019] [Indexed: 02/05/2023]
Abstract
Wear particle-induced osteolysis around the prosthesis is the most common long-term complication after total joint replacement surgery which often leads to aseptic loosening of the prosthesis. Osteoclasts play key roles in the osteolytic process. Currently there is a lack of clinically effective measures to prevent or treat peri-prosthetic osteolysis and thus identification of new agents that can inhibit the enhanced osteoclastic bone resorption is warranted. Through this study, we discovered that the specific and potent ERK1/2 inhibitor, Vx-11e, can protect against calvarial osteolysis caused by titanium (Ti) particles in vivo. Low doses of Vx-11e mildly reduced osteoclast resorption whilst no calvarial osteolysis was observed with high dose Vx-11e treatment. Histological examination showed fewer osteoclasts and reduced bone erosion in the Vx-11e treated groups. In vitro cellular analyses showed that Vx-11e inhibited osteoclast formation from BMM precursors in response to RANKL, as well as bone resorption by mature osteoclasts. Mechanistically, Vx-11e impaired RANKL-induced ERK1/2 signaling by inhibiting its kinase activity thereby blocking the phosphorylation of downstream substrates. Moreover, Vx-11e significantly reduced the expression of RANKL-mediated genes such as ACP5/TRAcP, CTR, MMP-9, CTSK. Collectively, our data provides evidence for the potential therapeutic use of Vx-11e for the treatment of osteolysis diseases caused by extremely actived osteoclastogenesis.
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Affiliation(s)
- Chen Li
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Zuoxing Wu
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Zhanfei Fang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Xixi Lin
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Ruoyu Pu
- Department of Obstetrics and Gynaecology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Yanbin Kang
- Research Centre for Regenerative Medicine, Department of Trauma Orthopedic and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi, 530021, China
| | - Li Li
- Pharmaceutic College, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Siyuan Shao
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Jiaxin Ding
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Jinmin Zhao
- Research Centre for Regenerative Medicine, Department of Trauma Orthopedic and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi, 530021, China
| | - Qian Liu
- Research Centre for Regenerative Medicine, Department of Trauma Orthopedic and Hand Surgery, The First Affiliated Hospital of Guangxi Medical University, Guangxi, 530021, China.
| | - An Qin
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China; Department of Orthopaedics, Shanghai Key Laboratory of Orthopaedic Implant, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
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Li Z, Yuan G, Lin X, Liu Q, Xu J, Lian Z, Song F, Zheng J, Xie D, Chen L, Wang X, Feng H, Zhou M, Yao G. Dehydrocostus lactone (DHC) suppresses estrogen deficiency-induced osteoporosis. Biochem Pharmacol 2019; 163:279-289. [PMID: 30721671 DOI: 10.1016/j.bcp.2019.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 02/01/2019] [Indexed: 02/05/2023]
Abstract
Osteoporosis is a chronic bone lytic disease, because of inadequate bone ossification and/or excessive bone resorption. Even though drugs are currently available for the treatment of osteoporosis, there remains an unmet need for the development of more specific novel agents with less adverse effects. Dehydrocostus lactone (DHC), a natural sesquiterpene lactone, was previously found to affect the differentiation of inflammatory cells by inhibiting NF-κB pathways, and garnered much interest for its anti-cancer properties via SOCS-mediated cell cycle arrest and apoptosis. As NF-κB pathway plays an essential role in osteoclast differentiation, we sought to discover the biological effects of DHC on osteoclast differentiation and resorptive activity, as well as the underlying mechanisms on these effects. Our research found that DHC inhibited RANKL-induced osteoclast differentiation, bone resorption and osteoclast specific genes expression via suppression of NF-κB and NFAT signaling pathways in vitro. We further demonstrated that DHC protected against ovariectomy (OVX)-induced bone loss in mice and the protective effect was mediated at least in part through the attenuation of NF-κB signaling pathway. Thus, this study provides insight that DHC might be used as a potential pharmacological treatment for osteoporosis.
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Affiliation(s)
- Zhaoning Li
- Department of Orthopedics, Dongguan People's Hospital, Dongguan, Guangdong 523000, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Xixi Lin
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China; Centre for Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Qian Liu
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China; Centre for Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Fangming Song
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China; Centre for Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Jinjian Zheng
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Dantao Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Lingzi Chen
- Affiliated Chaozhou Central Hospital, Southern Medical University (Chaozhou Central Hospital), China
| | - Xinjia Wang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Haotian Feng
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China; Centre for Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China; School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Mengyu Zhou
- Department of Dentistry, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, China.
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39
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Lian Z, Han J, Huang L, Wei C, Fan Y, Xu J, Zhou M, Feng H, Liu Q, Chen L, Li Z, Cheng H, Yuan G, Lin X, Song F, Su Y, Wang C, Huang G, Qin A, Song Y, Yao G. Retraction of: A005, a novel inhibitor of phosphatidylinositol 3-kinase/mammalian target of rapamycin, prevents osteosarcoma-induced osteolysis. Carcinogenesis 2019; 40:e1-e13. [PMID: 29635391 DOI: 10.1093/carcin/bgy036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Osteosarcoma is the most frequent primary bone tumor in children and adolescents. The phosphatidylinositol 3-kinase (PI3K)/mammalian target of rapamycin (mTOR) signaling pathway is an attractive anticancer target because it plays key roles in the regulation of cell growth, division and differentiation. In this study, we demonstrated high expression of PI3K/mTOR signaling pathway-related genes in patients with osteosarcoma. We thus investigated the effects of A005, a newly synthesized dual PI3K/mTOR inhibitor, on osteosarcoma cells and in a mouse xenograft tumor model. The results confirmed that A005 inhibited the proliferation, migration and invasion of human osteosarcoma cells. In addition, A005 also inhibited receptor activator of nuclear factor kappa-B ligand (RANKL)-induced osteoclast differentiation and bone resorption in vitro. Therefore, A005 was further applied to a SaOS-2 osteosarcoma-induced mouse osteolysis model. A005 inhibited tumor growth and prevented osteosarcoma-associated osteolysis via modulation of the PI3K/AKT/mTOR pathway. Overall, our results showed that A005 inhibited osteoclastogenesis and prevented osteosarcoma-induced bone osteolysis by suppressing PI3K/AKT/mTOR signaling. These findings indicated that A005 may be a promising candidate drug for the treatment of human osteosarcoma.
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Affiliation(s)
- Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Jinsong Han
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, Shanghai, China
- Department of Medicinal Chemistry, Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld, Heidelberg, Germany
| | - Lin Huang
- Department of Spine Surgery, Department of Orthopedics, Research Center of Spinal and Pelvic Tumor, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou City, Guangdong Province, China
| | - Chengming Wei
- Department of Orthopedics, Collaborative Innovation Center of Guangxi Biological Medicine, Guangxi Medical University, Guangxi, China
| | - Yongyong Fan
- Orthopedic Department, Taizhou Hospital, Wenzhou Medical University, Linhai, China
| | - Jiake Xu
- Department of Orthopedics, School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
| | - Mengyu Zhou
- Department of Stomatology, Haicheng Central Hospital, Liaoning, China
| | - Haotian Feng
- Department of Orthopedics, Research Centre for Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Qian Liu
- Department of Orthopedics, Research Centre for Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Lingzi Chen
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Zhaoning Li
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Haichun Cheng
- Department of General Surgery, The Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Shenzhen, Guangdong, China
| | - Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - Xixi Lin
- Department of Orthopedics, Research Centre for Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Fangming Song
- Department of Orthopedics, Research Centre for Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Yiji Su
- Department of Rehabilitation, The First Affiliated Hospital, Guangxi Medical University, Guangxi, China
| | - Chao Wang
- Department of Orthopedics, School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
| | - Guopeng Huang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
| | - An Qin
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yunlong Song
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
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40
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Yuan G, Lian Z, Liu Q, Lin X, Xie D, Song F, Wang X, Shao S, Zhou B, Li C, Li M, Yao G. Phosphatidyl inositol 3-kinase (PI3K)-mTOR inhibitor PKI-402 inhibits breast cancer induced osteolysis. Cancer Lett 2019; 443:135-144. [PMID: 30540926 DOI: 10.1016/j.canlet.2018.11.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 11/26/2018] [Accepted: 11/29/2018] [Indexed: 02/05/2023]
Abstract
Bone metastasis causes bone pain and pathological bone fracture in breast cancer patients with a serious complication. Previous studies have demonstrated that a novel phosphatidyl inositol 3-kinase (PI3K)-mTOR inhibitor PKI-402 suppressed the growth of breast cancer cells. However, the role of PKI-402 involved in osteolysis induced by breast cancer remains unclear. In this study, we showed that treatment of PKI-402 led to significant decreases in RANKL-induced osteoclastogenesis and osteoclast-specific gene expression in mouse bone marrow-derived macrophages and reduced proliferation, migration and invasion of MDA-MB-231 breast cancer cells by blocking the PI3K-AKT-mTOR signaling pathway. Importantly, as evidenced by the observation that the administration of PKI-402 inhibited MDA-MB-231-induced osteolysis in vivo, PKI-402 exerted an inhibitory effect on osteoclast formation and bone resorption, critical for cancer cells-induced bone destruction. These results strongly suggest that PKI-402 might have a therapeutic potential to inhibit breast cancer induced osteolysis.
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Affiliation(s)
- Guixin Yuan
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Zhen Lian
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Qian Liu
- Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China; Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China
| | - Xixi Lin
- Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China; Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China
| | - Dantao Xie
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Fangming Song
- Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China; Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China
| | - Xinjia Wang
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China
| | - Siyuan Shao
- Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China; Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China
| | - Bo Zhou
- Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China; Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi, 530021, China; Orthopaedic Department, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China
| | - Chen Li
- Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Guangxi, 530021, China; Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, 530021, China
| | - Muyan Li
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning, Guangxi, 530021, China.
| | - Guanfeng Yao
- Department of Orthopedics, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, 515041, China.
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Drescher C, Moore K, Liu J, O’Malley D, Wang E, Wang JZ, Subbiah V, Wilky B, Yuan G, Dupont C, Gonzalez A, Savitsky D, Coulter S, Shebanova O, Dow E, Ortuzar W, Buell J, Stein R, Youssoufian H. Phase I/II, open-label, multiple ascending dose trial of AGEN2034, an anti–PD-1 monoclonal antibody, in advanced solid malignancies: Results of dose escalation in advanced cancer and expansion cohorts in subjects with relapsed/refractory cervical cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Wilky B, Kumthekar P, Wesolowski R, Hwang J, Park S, Yuan G, Dupont C, Lim M, Shebanova O, Cuillerot JM, Dow E, Ortuzar W, Raizer J, Drouin E, Wilson N, Gonzalez A, Goldberg J, Buell J, Stein R, Youssoufian H. Phase I, open-label ascending dose trial of anti–CTLA-4 monoclonal antibody AGEN1884 in advanced solid malignancies, with expansion to patients refractory to recent anti–PD-1/PD-L1 therapy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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43
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Yang H, Rao L, Cui J, Yuan G. Effect of patient support on psychological and activity of daily living in patients with early spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Fu Q, Wang DH, Xu L, Yuan G. A cardioid oscillator with asymmetric time ratio for establishing CPG models. Biol Cybern 2018; 112:227-235. [PMID: 29332230 DOI: 10.1007/s00422-018-0746-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 12/26/2017] [Indexed: 06/07/2023]
Abstract
Nonlinear oscillators are usually utilized by bionic scientists for establishing central pattern generator models for imitating rhythmic motions by bionic scientists. In the natural word, many rhythmic motions possess asymmetric time ratios, which means that the forward and the backward motions of an oscillating process sustain different times within one period. In order to model rhythmic motions with asymmetric time ratios, nonlinear oscillators with asymmetric forward and backward trajectories within one period should be studied. In this paper, based on the property of the invariant set, a method to design the closed curve in the phase plane of a dynamic system as its limit cycle is proposed. Utilizing the proposed method and considering that a cardioid curve is a kind of asymmetrical closed curves, a cardioid oscillator with asymmetric time ratios is proposed and realized. Through making the derivation of the closed curve in the phase plane of a dynamic system equal to zero, the closed curve is designed as its limit cycle. Utilizing the proposed limit cycle design method and according to the global invariant set theory, a cardioid oscillator applying a cardioid curve as its limit cycle is achieved. On these bases, the numerical simulations are conducted for analyzing the behaviors of the cardioid oscillator. The example utilizing the established cardioid oscillator to simulate rhythmic motions of the hip joint of a human body in the sagittal plane is presented. The results of the numerical simulations indicate that, whatever the initial condition is and without any outside input, the proposed cardioid oscillator possesses the following properties: (1) The proposed cardioid oscillator is able to generate a series of periodic and anti-interference self-exciting trajectories, (2) the generated trajectories possess an asymmetric time ratio, and (3) the time ratio can be regulated by adjusting the oscillator's parameters. Furthermore, the comparison between the simulated trajectories by the established cardioid oscillator and the measured angle trajectories of the hip angle of a human body show that the proposed cardioid oscillator is fit for imitating the rhythmic motions of the hip of a human body with asymmetric time ratios.
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Affiliation(s)
- Q Fu
- Precision and Intelligence Laboratory, Department of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - D H Wang
- Key Laboratory of Optoelectronic Technology and Systems of the Ministry of Education of China, Chongqing University, Chongqing, 400044, China.
- Precision and Intelligence Laboratory, Department of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China.
| | - L Xu
- Precision and Intelligence Laboratory, Department of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - G Yuan
- Key Laboratory of Optoelectronic Technology and Systems of the Ministry of Education of China, Chongqing University, Chongqing, 400044, China
- Precision and Intelligence Laboratory, Department of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
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Su W, Du L, Liu S, Deng J, Cao Q, Yuan G, Kijlstra A, Yang P. ERAP1/ERAP2 and RUNX3 polymorphisms are not associated with ankylosing spondylitis susceptibility in Chinese Han. Clin Exp Immunol 2018; 193:95-102. [PMID: 29480940 PMCID: PMC6038008 DOI: 10.1111/cei.13121] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2018] [Indexed: 02/01/2023] Open
Abstract
Previous studies show that endoplasmic reticulum‐associated aminopeptidase (ERAP1/ERAP2) and runt‐related transcription factor 3 (RUNX3) gene polymorphisms are associated with AS (ankylosing spondylitis) in European Caucasians. However, contradictory results were reported in different Asian populations. The purpose of this study was to determine whether eleven candidate single nucleotide polymorphisms (SNPs) in ERAP1/ERAP2 and six in RUNX3 genes confer susceptibility to AS with or without acute anterior uveitis (AAU) [AS+AAU+ or AS+AAU–] in Chinese Han. Therefore, a case–control association study was performed in 882 AS+AAU–, 884 AS+AAU+ and 1727 healthy controls. Genotyping was performed using the iPLEXGold genotyping assay. A meta‐analysis was performed to assess the association of polymorphisms of ERAP1 with AS susceptibility in Asian populations. No association was found between SNPs of ERAP1/ERAP2/RUNX3 and susceptibility of AS with or without AAU. A case–control study between patients with human leucocyte antigen HLA‐B27‐positive and healthy controls also failed to demonstrate an association of the tested SNP with AS with or without AAU. Moreover, a meta‐analysis showed that there was no association of rs30187, rs27037, rs27980, rs27434 and rs27582 in ERAP1 with AS in Chinese Han. Taken together, 17 SNPs in ERAP1/ERAP2 and RUNX3 genes did not confer disease susceptibility to AS in Chinese Han.
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Affiliation(s)
- W Su
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
| | - L Du
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
| | - S Liu
- Rheumatology Department of the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J Deng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
| | - Q Cao
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
| | - G Yuan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
| | - A Kijlstra
- University Eye Clinic, Maastricht, Maastricht, the Netherlands
| | - P Yang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, Chongqing, China
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46
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Duan D, Gong X, Yuan G, Zhai F. Right linear map preserving the left spectrum of 2x2 quaternion matrices. Proc Estonian Acad Sci 2018. [DOI: 10.3176/proc.2018.4.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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Xie JH, Li CY, Yuan G. [Congenital adrenal hypoplasia combined with hypogonadotropic hypogonadism dued to new DAX-1 mutations: two cases report]. Zhonghua Nei Ke Za Zhi 2017; 56:853-855. [PMID: 29136719 DOI: 10.3760/cma.j.issn.0578-1426.2017.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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48
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Tian F, Liu GR, Li N, Yuan G. Insulin-like growth factor I reduces the occurrence of necrotizing enterocolitis by reducing inflammatory response and protecting intestinal mucosal barrier in neonatal rats model. Eur Rev Med Pharmacol Sci 2017; 21:4711-4719. [PMID: 29131241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To observe the effect of enteral supplement of insulin-like growth factor I (IGF-1) on dynamic changes of TLR4, NF-κB, IL-6, SIgA and MUC2 in intestinal tissues of neonatal rats, and to investigate the protective effects and possible mechanisms of IGF-1 on necrotizing enterocolitis (NEC). MATERIALS AND METHODS Specific pathogen free (SPF) neonatal Sprague Dawley (SD) rats aged 3 days old were randomly divided into 3 groups, namely, normal control group, NEC model group and IGF-1 intervention group. In NEC group, the neonatal NEC rat models were established using artificial feeding, hypoxia and cold stimulation. In IGF-1 intervention group, the models were established by means of artificial feeding plus hypoxia and cold stimulation, and IGF-1 (22 ug/L) at a physiological concentration similar to the breast milk was added to milk replacer for intervention. The rats in the three groups were killed after the blood was collected from the heart at 24, 48 and 72 h, respectively, following the establishment of models; then, 3 cm of the terminal ilea were dissected and used for histopathological examination, RT-PCR and ELISA studies after hematoxylin and eosin (HE) staining. RESULTS Symptoms in IGF-1 intervention group were significantly relieved, and the incidence rate of NEC was lowered remarkably. In NEC model group, the peak expression of TLR4 mRNA occurred later than that of NF-κB mRNA and IL-6, and the expressions of TLR4 mRNA, NF-κB mRNA and IL-6 were decreased at 72 h after IGF-1 intervention. In NEC model group, the expression of MUC2 showed a transient decrease, the expression of SIgA was on the decline, but the expressions of MUC2 and SIgA were increased after IGF-1 intervention. CONCLUSIONS The enteral administration of IGF-1 at a physiological concentration can ameliorate the clinical symptoms in neonatal NEC rat models and decrease the occurrence rate. The possible mechanism is that IGF-1 down-regulates the TLR4 mRNA expression to inhibit the production of inflammatory mediators, and it up-regulates the expressions of MUC2 and SIgA to protect the mechanical and immuno-barrier functions of the intestinal mucous.
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Affiliation(s)
- F Tian
- Department of Pediatric, Maternal and Child Health Hospital of Zibo City, Zibo, China.
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Wang M, Lawrence JB, Quon DV, Ducore J, Simpson ML, Boggio LN, Mitchell IS, Yuan G, Alexander WA, Schved JF. PERSEPT 1: a phase 3 trial of activated eptacog beta for on-demand treatment of haemophilia inhibitor-related bleeding. Haemophilia 2017; 23:832-843. [DOI: 10.1111/hae.13301] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2017] [Indexed: 01/19/2023]
Affiliation(s)
- M. Wang
- Hemophilia and Thrombosis Center; University of Colorado; Aurora CO USA
| | | | - D. V. Quon
- Orthopaedic Hemophilia Treatment Center; Orthopaedic Institute for Children; Los Angeles CA USA
| | - J. Ducore
- University of California, Davis; Comprehensive Cancer Center; Hematology/Oncology Clinic; Sacramento CA USA
| | | | | | | | - G. Yuan
- LFB USA Inc.; Framingham MA USA
| | | | - J.-F. Schved
- Département d'Hématologie Biologique; Hôpital Saint-Eloi; CHU Montpellier; Montpellier France
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Yuan G, Zeng CL, Zhu DD, Shi XJ. Influences of RFA combined with TACE on the HIF-1α and EGR level of patients with primary hepatic carcinoma. Eur Rev Med Pharmacol Sci 2017; 21:1738-1745. [PMID: 28485808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To discuss the influences of radiofrequency ablation (RFA) combined with hepatic arterial chemoembolization on the expression level of immunity and hypoxia-inducible factor (HIF-1a) and early growth response protein2 (EGR2) of patients with hepatocarcinoma. PATIENTS AND METHODS Patients with primary hepatic carcinoma treated in our hospital from 2011 to 2014 were divided into research group (RFA+TACE) and control group (TACE) according to different therapy methods, with 72 patients in each group. Then, the immunity functions were detected before treatment and 3 months after treatment, the expression level of HIF-1a, EGR-2, the alpha fetal protein (AFP), the therapeutic effect, and incidence of adverse reaction in near and specific future were compared between two groups. RESULTS After treatment, the ratio of CD3+ and CD4+T cells, specific vale of CD4/CD8, and NK cell population in research group were more than those in control group, while the ratio of CD8+T cells was less than that in control group with statistical significance. Meanwhile, the expression levels of HIF-1a (F between-group*time point = 5.353, p = 0.043), EGR-2 (F between-group*time point = 4.385, p = 0.044), and AFP (F between-group*time point = 4.205, p = 0.045) had difference with statistical significance. Moreover, the recent therapy response rate in research group was 76.4%, which was higher than that in control group (50.0%), with significant difference (χ2 = 10.784, p = 0.029), while the difference of long-term therapeutic effect between two groups has statistical significance (χ2 = 7.439, p = 0.005). CONCLUSIONS The treatment of primary hepatic carcinoma by TACE combined with RAF therapeutic schedule was helpful in improving organic immunity, decreasing tumor angiogenesis and reducing tumor cell proliferation speed to improve the short- and long-term therapeutic effects.
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Affiliation(s)
- G Yuan
- Department of Acute Infection, Ningbo No. 2 Hospital Ningbo, Zhejiang, China.
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