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Zhu Y, Li Q. Multifaceted roles of PDCD6 both within and outside the cell. J Cell Physiol 2024; 239:e31235. [PMID: 38436472 DOI: 10.1002/jcp.31235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/15/2024] [Accepted: 02/20/2024] [Indexed: 03/05/2024]
Abstract
Programmed cell death protein 6 (PDCD6) is an evolutionarily conserved Ca2+-binding protein. PDCD6 is involved in regulating multifaceted and pleiotropic cellular processes in different cellular compartments. For instance, nuclear PDCD6 regulates apoptosis and alternative splicing. PDCD6 is required for coat protein complex II-dependent endoplasmic reticulum-to-Golgi apparatus vesicular transport in the cytoplasm. Recent advances suggest that cytoplasmic PDCD6 is involved in the regulation of cytoskeletal dynamics and innate immune responses. Additionally, membranous PDCD6 participates in membrane repair through endosomal sorting complex required for transport complex-dependent membrane budding. Interestingly, extracellular vesicles are rich in PDCD6. Moreover, abnormal expression of PDCD6 is closely associated with many diseases, especially cancer. PDCD6 is therefore a multifaceted but pivotal protein in vivo. To gain a more comprehensive understanding of PDCD6 functions and to focus and stimulate PDCD6 research, this review summarizes key developments in its role in different subcellular compartments, processes, and pathologies.
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Affiliation(s)
- Yigao Zhu
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Qingchao Li
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
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Ni H, Li L, Hu D, Yang M, Wang D, Ma H, Bu W, Yang J, Zhu LE, Zhai D, Song T, Yang S, Lu Q, Li D, Ran J, Liu M. Dynamic changes of endothelial and stromal cilia are required for the maintenance of corneal homeostasis. J Cell Physiol 2024; 239:e31215. [PMID: 38308657 DOI: 10.1002/jcp.31215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/21/2024] [Accepted: 01/24/2024] [Indexed: 02/05/2024]
Abstract
Primary cilia are distributed extensively within the corneal epithelium and endothelium. However, the presence of cilia in the corneal stroma and the dynamic changes and roles of endothelial and stromal cilia in corneal homeostasis remain largely unknown. Here, we present compelling evidence for the presence of primary cilia in the corneal stroma, both in vivo and in vitro. We also demonstrate dynamic changes of both endothelial and stromal cilia during corneal development. In addition, our data show that cryoinjury triggers dramatic cilium formation in the corneal endothelium and stroma. Furthermore, depletion of cilia in mutant mice lacking intraflagellar transport protein 88 compromises the corneal endothelial capacity to establish the effective tissue barrier, leading to an upregulation of α-smooth muscle actin within the corneal stroma in response to cryoinjury. These observations underscore the essential involvement of corneal endothelial and stromal cilia in maintaining corneal homeostasis and provide an innovative strategy for the treatment of corneal injuries and diseases.
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Affiliation(s)
- Hua Ni
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
- College of Life and Geographic Sciences, Kashi University, Kashi, China
| | - Lamei Li
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Die Hu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Mulin Yang
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Difei Wang
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Hongbo Ma
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Weiwen Bu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Jia Yang
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Li-E Zhu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Denghui Zhai
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Ting Song
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Song Yang
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Quanlong Lu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Dengwen Li
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Jie Ran
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Min Liu
- Laboratory of Tissue Homeostasis, Haihe Laboratory of Cell Ecosystem, Tianjin, China
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Bu W, Di J, Zhao J, Liu R, Wu Y, Ran J, Li T. Dynein Light Intermediate Chains Exhibit Different Arginine Methylation Patterns. J Clin Lab Anal 2024; 38:e25030. [PMID: 38525916 PMCID: PMC11033342 DOI: 10.1002/jcla.25030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND The motor protein dynein is integral to retrograde transport along microtubules and interacts with numerous cargoes through the recruitment of cargo-specific adaptor proteins. This interaction is mediated by dynein light intermediate chain subunits LIC1 (DYNC1LI1) and LIC2 (DYNC1LI2), which govern the adaptor binding and are present in distinct dynein complexes with overlapping and unique functions. METHODS Using bioinformatics, we analyzed the C-terminal domains (CTDs) of LIC1 and LIC2, revealing similar structural features but diverse post-translational modifications (PTMs). The methylation status of LIC2 and the proteins involved in this modification were examined through immunoprecipitation and immunoblotting analyses. The specific methylation sites on LIC2 were identified through a site-directed mutagenesis analysis, contributing to a deeper understanding of the regulatory mechanisms of the dynein complex. RESULTS We found that LIC2 is specifically methylated at the arginine 397 residue, a reaction that is catalyzed by protein arginine methyltransferase 1 (PRMT1). CONCLUSIONS The distinct PTMs of the LIC subunits offer a versatile mechanism for dynein to transport diverse cargoes efficiently. Understanding how these PTMs influence the functions of LIC2, and how they differ from LIC1, is crucial for elucidating the role of dynein-related transport pathways in a range of diseases. The discovery of the arginine 397 methylation site on LIC2 enhances our insight into the regulatory PTMs of dynein functions.
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Affiliation(s)
- Weiwen Bu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life SciencesNankai UniversityTianjinChina
| | - Jie Di
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life SciencesNankai UniversityTianjinChina
| | - Junkui Zhao
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life SciencesNankai UniversityTianjinChina
| | - Ruming Liu
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life SciencesNankai UniversityTianjinChina
| | - Yue Wu
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life SciencesShandong Normal UniversityJinanChina
| | - Jie Ran
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, College of Life SciencesShandong Normal UniversityJinanChina
| | - Te Li
- Department of Genetics and Cell Biology, Haihe Laboratory of Cell Ecosystem, State Key Laboratory of Medicinal Chemical Biology, College of Life SciencesNankai UniversityTianjinChina
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Wu Y, Ma Y. CCL2-CCR2 signaling axis in obesity and metabolic diseases. J Cell Physiol 2024; 239:e31192. [PMID: 38284280 DOI: 10.1002/jcp.31192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/10/2023] [Accepted: 12/29/2023] [Indexed: 01/30/2024]
Abstract
Obesity and metabolic diseases, such as insulin resistance, type 2 diabetes, nonalcoholic fatty liver disease, and cardiovascular ailments, represent formidable global health challenges, bearing considerable implications for both morbidity and mortality rates. It has become increasingly evident that chronic, low-grade inflammation plays a pivotal role in the genesis and advancement of these conditions. The involvement of C-C chemokine ligand 2 (CCL2) and its corresponding receptor, C-C chemokine receptor 2 (CCR2), has been extensively documented in numerous inflammatory maladies. Recent evidence indicates that the CCL2/CCR2 pathway extends beyond immune cell recruitment and inflammation, exerting a notable influence on the genesis and progression of metabolic syndrome. The present review seeks to furnish a comprehensive exposition of the CCL2-CCR2 signaling axis within the context of obesity and metabolic disorders, elucidating its molecular mechanisms, functional roles, and therapeutic implications.
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Affiliation(s)
- Yue Wu
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Center for Cell Structure and Function, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Yanchun Ma
- Shandong Provincial Key Laboratory of Animal Resistance Biology, Center for Cell Structure and Function, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
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Zhan X, Yang Y, Li Q, He F. The role of deubiquitinases in cardiac disease. Expert Rev Mol Med 2024; 26:e3. [PMID: 38525836 PMCID: PMC11062144 DOI: 10.1017/erm.2024.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/10/2023] [Accepted: 12/28/2023] [Indexed: 03/26/2024]
Abstract
Deubiquitinases are a group of proteins that identify and digest monoubiquitin chains or polyubiquitin chains attached to substrate proteins, preventing the substrate protein from being degraded by the ubiquitin-proteasome system. Deubiquitinases regulate cellular autophagy, metabolism and oxidative stress by acting on different substrate proteins. Recent studies have revealed that deubiquitinases act as a critical regulator in various cardiac diseases, and control the onset and progression of cardiac disease through a board range of mechanism. This review summarizes the function of different deubiquitinases in cardiac disease, including cardiac hypertrophy, myocardial infarction and diabetes mellitus-related cardiac disease. Besides, this review briefly recapitulates the role of deubiquitinases modulators in cardiac disease, providing the potential therapeutic targets in the future.
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Affiliation(s)
- Xiaona Zhan
- Department of Nephrology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Yi Yang
- Department of Nephrology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Qing Li
- Department of Nephrology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Fan He
- Department of Nephrology, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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Bekas N, Samiotaki M, Papathanasiou M, Mokos P, Pseftogas A, Xanthopoulos K, Thanos D, Mosialos G, Dafou D. Inactivation of Tumor Suppressor CYLD Inhibits Fibroblast Reprogramming to Pluripotency. Cancers (Basel) 2023; 15:4997. [PMID: 37894364 PMCID: PMC10605754 DOI: 10.3390/cancers15204997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
CYLD is a tumor suppressor gene coding for a deubiquitinating enzyme that has a critical regulatory function in a variety of signaling pathways and biological processes involved in cancer development and progression, many of which are also key modulators of somatic cell reprogramming. Nevertheless, the potential role of CYLD in this process has not been studied. With the dual aim of investigating the involvement of CYLD in reprogramming and developing a better understanding of the intricate regulatory system governing this process, we reprogrammed control (CYLDWT/WT) and CYLD DUB-deficient (CYLDΔ9/Δ9) mouse embryonic fibroblasts (MEFs) into induced pluripotent stem cells (iPSCs) through ectopic overexpression of the Yamanaka factors (Oct3/4, Sox2, Klf4, c-myc). CYLD DUB deficiency led to significantly reduced reprogramming efficiency and slower early reprogramming kinetics. The introduction of WT CYLD to CYLDΔ9/Δ9 MEFs rescued the phenotype. Nevertheless, CYLD DUB-deficient cells were capable of establishing induced pluripotent colonies with full spontaneous differentiation potential of the three germ layers. Whole proteome analysis (Data are available via ProteomeXchange with identifier PXD044220) revealed that the mesenchymal-to-epithelial transition (MET) during the early reprogramming stages was disrupted in CYLDΔ9/Δ9 MEFs. Interestingly, differentially enriched pathways revealed that the primary processes affected by CYLD DUB deficiency were associated with the organization of the extracellular matrix and several metabolic pathways. Our findings not only establish for the first time CYLD's significance as a regulatory component of early reprogramming but also highlight its role as an extracellular matrix regulator, which has profound implications in cancer research.
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Affiliation(s)
- Nikolaos Bekas
- School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.B.); (P.M.); (G.M.)
| | - Martina Samiotaki
- Biomedical Sciences Research Center “Alexander Fleming”, 16672 Vari, Greece;
| | - Maria Papathanasiou
- Biomedical Research Foundation Academy of Athens, 11527 Athens, Greece; (M.P.); (D.T.)
| | - Panagiotis Mokos
- School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.B.); (P.M.); (G.M.)
| | - Athanasios Pseftogas
- Division of Experimental Oncology, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy;
| | - Konstantinos Xanthopoulos
- Laboratory of Pharmacology, Department of Pharmacy, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Dimitris Thanos
- Biomedical Research Foundation Academy of Athens, 11527 Athens, Greece; (M.P.); (D.T.)
| | - George Mosialos
- School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.B.); (P.M.); (G.M.)
| | - Dimitra Dafou
- School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.B.); (P.M.); (G.M.)
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Vielmuth F, Radeva MY, Yeruva S, Sigmund AM, Waschke J. cAMP: A master regulator of cadherin-mediated binding in endothelium, epithelium and myocardium. Acta Physiol (Oxf) 2023; 238:e14006. [PMID: 37243909 DOI: 10.1111/apha.14006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/05/2023] [Accepted: 05/22/2023] [Indexed: 05/29/2023]
Abstract
Regulation of cadherin-mediated cell adhesion is crucial not only for maintaining tissue integrity and barrier function in the endothelium and epithelium but also for electromechanical coupling within the myocardium. Therefore, loss of cadherin-mediated adhesion causes various disorders, including vascular inflammation and desmosome-related diseases such as the autoimmune blistering skin dermatosis pemphigus and arrhythmogenic cardiomyopathy. Mechanisms regulating cadherin-mediated binding contribute to the pathogenesis of diseases and may also be used as therapeutic targets. Over the last 30 years, cyclic adenosine 3',5'-monophosphate (cAMP) has emerged as one of the master regulators of cell adhesion in endothelium and, more recently, also in epithelial cells as well as in cardiomyocytes. A broad spectrum of experimental models from vascular physiology and cell biology applied by different generations of researchers provided evidence that not only cadherins of endothelial adherens junctions (AJ) but also desmosomal contacts in keratinocytes and the cardiomyocyte intercalated discs are central targets in this scenario. The molecular mechanisms involve protein kinase A- and exchange protein directly activated by cAMP-mediated regulation of Rho family GTPases and S665 phosphorylation of the AJ and desmosome adaptor protein plakoglobin. In line with this, phosphodiesterase 4 inhibitors such as apremilast have been proposed as a therapeutic strategy to stabilize cadherin-mediated adhesion in pemphigus and may also be effective to treat other disorders where cadherin-mediated binding is compromised.
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Affiliation(s)
- Franziska Vielmuth
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Mariya Y Radeva
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Sunil Yeruva
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Anna M Sigmund
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Jens Waschke
- Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, LMU Munich, Munich, Germany
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He N, Liu M, Wu Y. Adipose tissue and hematopoiesis: Friend or foe? J Clin Lab Anal 2023; 37:e24872. [PMID: 36972475 PMCID: PMC10156104 DOI: 10.1002/jcla.24872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/02/2023] [Accepted: 03/12/2023] [Indexed: 03/29/2023] Open
Abstract
AIM Hematopoietic stem cells are the origin of all hematopoietic cells. They have the self-renewal ability and can differentiate into various blood cells. In physiological state, most of the hematopoietic stem cells are dormant, and only a few cells proliferate to maintain hematopoietic homeostasis. METHODS This precise steady-state maintenance is regulated by complex mechanisms. Bone marrow adipocytes make up half of all cells in the bone marrow cavity, a feature that has attracted the attention of researchers from multiple fields. The adipocyte density within marrow increases during aging and obesity. RESULTS Recent studies have shown that bone marrow adipocytes play important roles in regulating hematopoiesis, but the effects of bone marrow adipocytes on hematopoiesis are often conflicting. Bone marrow adipocytes, participating in the formation of bone marrow hematopoietic microenvironment, influence hematopoiesis positively or negatively. In addition, other adipose tissue, especially white adipose tissue, also regulates hematopoiesis. CONCLUSION In this review, we describe the role of adipose tissue in hematological malignancies, which may be useful for understanding hematopoiesis and the pathogenesis of related diseases.
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Affiliation(s)
- Na He
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, China
| | - Min Liu
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Yue Wu
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, China
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Cao Y, Zhang X, Hu M, Yang S, Li X, Han R, Zhou J, Li D, Liu D. CYLD inhibits osteoclastogenesis to ameliorate alveolar bone loss in mice with periodontitis. J Cell Physiol 2023; 238:1036-1045. [PMID: 36922748 DOI: 10.1002/jcp.30990] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/09/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023]
Abstract
Periodontitis is a chronic immune inflammatory disease that can lead to the destruction and loss of the tooth-supporting apparatus. During this process, the balance between bone absorption mediated by osteoclasts and bone formation mediated by osteoblasts is damaged. Consistent with previous studies, we observed that depletion of cylindromatosis (CYLD) resulted in an osteoporotic bone phenotype. However, the effect of CYLD deficiency on periodontitis is undetermined. Here, we investigated whether CYLD affects periodontal tissue homeostasis in experimental periodontitis in Cyld knockout (KO) mice, and we explored the underlying mechanisms. Interestingly, we discovered significant alveolar bone density loss and severely reduced alveolar bone height in Cyld KO mice with experimentally induced periodontitis. We observed increased osteoclast number and activity in both the femurs and alveolar bones, accompanied by the downregulation of osteogenesis genes and upregulation of osteoclastogenesis genes of alveolar bones in ligatured Cyld KO mice. Taken together, our findings demonstrate that the deletion of CYLD in mice plays a vital role in the pathogenesis of periodontal bone loss and suggest that CYLD might exert an ameliorative effect on periodontal inflammatory responses.
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Affiliation(s)
- Yuxin Cao
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
| | - Xinming Zhang
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
| | - Meilin Hu
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
| | - Song Yang
- Department of Genetics and Cell Biology, State Key Laboratory of Medicinal Chemical Biology, Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
| | - Xiaoyan Li
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
| | - Ruohui Han
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
| | - Jun Zhou
- Department of Genetics and Cell Biology, State Key Laboratory of Medicinal Chemical Biology, Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
| | - Dengwen Li
- Department of Genetics and Cell Biology, State Key Laboratory of Medicinal Chemical Biology, Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, China
| | - Dayong Liu
- Department of Endodontics and Laboratory of Stem Cells Endocrine Immunology, Tianjin Medical University School of Stomatology, Tianjin, China
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