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Xiong Q, Tian X, Xu C, Ma B, Li W, Xia Y, Liu W, Sun B, Ru Q, Shu X. Mediation of PM2.5-induced cytotoxicity: the role of P2X7 receptor in NR8383 cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:1602-1614. [PMID: 37394938 DOI: 10.1080/09603123.2023.2230920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/25/2023] [Indexed: 07/04/2023]
Abstract
Ambient fine particulate matter (PM2.5) is a threat to public health. The P2 X 7purinergic receptor (P2X7R) is a modulator that responds to inflammation. Yet the role of P2X7R in the mediation of PM2.5-induced pulmonary cytotoxicity is rarely investigated. In this study, the expression of P2X7R and its effect on cell viability, oxidative damage, apoptosis, mitochondrial dysfunction and underlying mechanism following PM2.5 treatment in rat alveolar macrophages (NR8383) were analyzed. The outcome indicated that PM2.5 exposure significantly increased the expression of P2X7R, while P2X7R antagonist oATP markedly alleviate the production of reactive oxygen species (ROS), Nitrite Oxidation (NO), mitochondrial membrane potential, apoptosis rate, and release of inflammatory cytokines. In contrast, P2X7 agonist BzATP showed opposite effect in PM2.5-treated NR8383 cells. Therefore, these results demonstrated that P2X7R participated in PM2.5-induced pulmonary toxicity, while the blockade of P2X7R is a promising therapeutic approach of treating PM2.5-induced lung diseases.
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Affiliation(s)
- Qi Xiong
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Xiang Tian
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Congyue Xu
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Baomiao Ma
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Wenshuang Li
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Yiyuan Xia
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Wei Liu
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Binlian Sun
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
| | - Qin Ru
- School of Health and Physical Education, Jianghan University, Wuhan City, Hubei Province, China
| | - Xiji Shu
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan City, Hubei Province, China
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Li Y, Fu T, Zhao Y, Yuan LJ, Wang BB, Guan J, Wang HJ, Li L, Gao YP. Micro-223 Promotes Diabetic Osteoarthritis Progression by Regulating Cartilage Degeneration and Subchondral Bone Remodeling. Cartilage 2023:19476035231210631. [PMID: 37994560 DOI: 10.1177/19476035231210631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2023] Open
Abstract
OBJECTIVE Our study was performed to investigate whether micro-223 promotes diabetic Osteoarthritis (OA) progression by regulating cartilage degeneration and subchondral bone remodeling. METHODS The expression of miR-223 in human normal cartilage, OA cartilage, and subchondral bone tissue with or without DM was detected by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR). miR-223 mimic or inhibitor was transfected into chondrocytes. Cell viability and apoptosis were assessed by 3-(4,5)-dimethylthiahiazo(-2)-3,5-diphenyltetrazolium bromide (MTT) and Terminal Deoxynucleotidyl Transferase(TdT)-mediated dUTP nick end labeling (TUNEL) assay, respectively. RESULTS miR-223 was significantly higher in human diabetic OA cartilage and subchondral bone compared with normal OA and healthy control. Overexpression of miR-223 accelerated cartilage degeneration and subchondral bone sclerosis in diabetic OA mice, whereas miR-223 inhibition had the opposite effect. In vitro upregulation of miR-223 decreased proliferation and enhanced apoptosis of chondrocytes. Meanwhile, downregulation of miR-223 promoted glycosaminoglycan (GAG) production in chondrocytes. CONCLUSION miR-223 promotes diabetic OA progression by regulating cartilage degeneration and subchondral bone remodeling both in vitro and in vivo.
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Affiliation(s)
- Yao Li
- Department of Orthopedics, The Third Hospital of Shijiazhuang, Shijiazhuang, China
| | - Ting Fu
- Department of Internal Medicine, Armed Police Corps Hospital of Hebei, Shijiazhuang, China
| | - Yi Zhao
- Department of Orthopedics, The Third Hospital of Shijiazhuang, Shijiazhuang, China
| | - Long-Jie Yuan
- Department of Orthopedics, The Third Hospital of Shijiazhuang, Shijiazhuang, China
| | - Bai-Bai Wang
- Department of Orthopedics, The Third Hospital of Shijiazhuang, Shijiazhuang, China
| | - Jian Guan
- Department of Orthopedics, The Third Hospital of Shijiazhuang, Shijiazhuang, China
| | - Hua-Jun Wang
- Departments of Sports Medicine and Bone and Joint Surgery and Sports Medicine Center, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Ling Li
- Department of Rheumatology and Immunology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University,Guangzhou,China
| | - Yan-Ping Gao
- Department of Traditional Chinese Orthopedics and Traumatology, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University,Guangzhou, China
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Kim J, Bai H. Peroxisomal Stress Response and Inter-Organelle Communication in Cellular Homeostasis and Aging. Antioxidants (Basel) 2022; 11:192. [PMID: 35204075 PMCID: PMC8868334 DOI: 10.3390/antiox11020192] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/15/2022] [Accepted: 01/16/2022] [Indexed: 12/20/2022] Open
Abstract
Peroxisomes are key regulators of cellular and metabolic homeostasis. These organelles play important roles in redox metabolism, the oxidation of very-long-chain fatty acids (VLCFAs), and the biosynthesis of ether phospholipids. Given the essential role of peroxisomes in cellular homeostasis, peroxisomal dysfunction has been linked to various pathological conditions, tissue functional decline, and aging. In the past few decades, a variety of cellular signaling and metabolic changes have been reported to be associated with defective peroxisomes, suggesting that many cellular processes and functions depend on peroxisomes. Peroxisomes communicate with other subcellular organelles, such as the nucleus, mitochondria, endoplasmic reticulum (ER), and lysosomes. These inter-organelle communications are highly linked to the key mechanisms by which cells surveil defective peroxisomes and mount adaptive responses to protect them from damages. In this review, we highlight the major cellular changes that accompany peroxisomal dysfunction and peroxisomal inter-organelle communication through membrane contact sites, metabolic signaling, and retrograde signaling. We also discuss the age-related decline of peroxisomal protein import and its role in animal aging and age-related diseases. Unlike other organelle stress response pathways, such as the unfolded protein response (UPR) in the ER and mitochondria, the cellular signaling pathways that mediate stress responses to malfunctioning peroxisomes have not been systematically studied and investigated. Here, we coin these signaling pathways as "peroxisomal stress response pathways". Understanding peroxisomal stress response pathways and how peroxisomes communicate with other organelles are important and emerging areas of peroxisome research.
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Affiliation(s)
- Jinoh Kim
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Hua Bai
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA
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Foreman SC, Ashmeik W, Baal JD, Han M, Bahroos E, von Schacky CE, Carl M, Krug R, Joseph GB, Link TM. Patients with Type 2 Diabetes Exhibit a More Mineralized Deep Cartilage Layer Compared with Nondiabetic Controls: A Pilot Study. Cartilage 2021; 13:428S-436S. [PMID: 31455093 PMCID: PMC8808878 DOI: 10.1177/1947603519870853] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE To assess differences in biochemical composition of the deep cartilage layer in subjects with type 2 diabetes mellitus (T2DM) and nondiabetic controls using UTE (ultra-short echo time) T2* mapping and to investigate the association of vascular health and UTE T2* measurements. DESIGN Ten subjects with T2DM matched for age, sex, and body mass index with 10 nondiabetic controls. A 3D UTE sequence with 6 echo times was acquired using 3T magnetic resonance imaging of the knee. For UTE T2* analysis, the deep cartilage layer was segmented and analyzed in 5 compartments (patella, medial, and lateral femur and tibia). The ankle brachial index (ABI) was obtained in all subjects. Linear regression analyses were used to assess associations of T2DM and UTE T2* relaxation times and the associations of ABI measurements and UTE measurements. RESULTS Compared with nondiabetic controls, T2DM subjects had significantly lower mean T2*-UTE in the patella (mean difference 4.87 ms; 95% confidence interval [CI] 1.09-8.65; P = 0.015), the lateral tibia (mean difference 2.26 ms; 95% CI 0.06-4.45; P = 0.045), and the lateral femur (mean difference 4.96 ms; 95% CI 0.19-9.73; P = 0.043). Independent of diabetic status, subjects with higher ABI values, indicating better vascular health, had higher T2*-UTE of the patella (coefficient 15.2; 95% CI 3.3-21.4; P = 0.017), the medial tibia (coefficient 9.8; 95% CI 1.0-18.6; P = 0.031), and the lateral femur (coefficient 18.8; 95% CI 3.3-34.3; P = 0.021). CONCLUSIONS T2*-UTE measurements of the deep cartilage layer were consistently lower in subjects with T2DM and in subjects with impaired vascular health, likely indicating increased mineralization of this layer.
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Affiliation(s)
- Sarah C. Foreman
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA,Department of Radiology, Klinikum Rechts
der Isar, Technische Universität München, Munich, Germany,Sarah C. Foreman, Department of Radiology
and Biomedical Imaging, University of California, San Francisco, 185 Berry
Street, Lobby 6, Suite 350, San Francisco, CA 94107, USA.
| | - Walid Ashmeik
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Joe D. Baal
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Misung Han
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Emma Bahroos
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Claudio E. von Schacky
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA,Department of Radiology, Klinikum Rechts
der Isar, Technische Universität München, Munich, Germany
| | | | - Roland Krug
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Gabby B. Joseph
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
| | - Thomas M. Link
- Department of Radiology and Biomedical
Imaging, University of California, San Francisco, CA, USA
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Wang L, Gao Z, Liu C, Li J. Potential biomarkers of abnormal osseointegration of implants in type II diabetes mellitus. BMC Oral Health 2021; 21:583. [PMID: 34794414 PMCID: PMC8603511 DOI: 10.1186/s12903-021-01939-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 10/30/2021] [Indexed: 01/13/2023] Open
Abstract
Background Type II diabetes mellitus (T2DM) is an important risk factor for osseointegration of implants. The aim of this study was to explore key genes of T2DM affecting bone metabolism through bioinformatic analysis of published RNA sequencing data, identify potential biomarkers, and provide a reference for finding the molecular mechanism of abnormal osseointegration caused by T2DM. Methods We identified differentially expressed mRNAs and miRNAs from the Gene Expression Omnibus database using the R package ‘limma’ and analysed the predicted target genes using Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis and Gene Ontology analysis. At the same time, miRNA–mRNA interactions were explored using miRWalk 2.0. Results We constructed an miRNA-gene regulatory network and a protein–protein interaction network. The enrichment pathways of differentially expressed mRNAs included extracellular matrix receptor interactions, protein digestion and absorption, the PI3K-Akt signalling pathway, cytokine–cytokine receptor interactions, chemokine signalling pathways, and haematopoietic cell lineage functions. We analysed the expression of these differentially expressed mRNAs and miRNAs in T2DM rats and normal rats with bone implants and identified Smpd3, Itga10, and rno-mir-207 as possible key players in osseointegration in T2DM. Conclusion Smpd3, Itga10, and rno-mir-207 are possible biomarkers of osseointegration in T2DM. This study sheds light on the possible molecular mechanism of abnormal osseointegration caused by bone metabolism disorder in T2DM. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01939-9.
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Affiliation(s)
- Lingxiao Wang
- Department of Dental Implant Center, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, No. 4 Tian Tan Xi Li, Beijing, 100050, People's Republic of China
| | - Zhenhua Gao
- Outpatient Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, No. 4 Tian Tan Xi Li, Beijing, 100050, People's Republic of China
| | - Changying Liu
- Department of Dental Implant Center, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, No. 4 Tian Tan Xi Li, Beijing, 100050, People's Republic of China
| | - Jun Li
- Department of Dental Implant Center, Beijing Stomatological Hospital, Capital Medical University, Capital Medical University School of Stomatology, No. 4 Tian Tan Xi Li, Beijing, 100050, People's Republic of China.
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Gora IM, Ciechanowska A, Ladyzynski P. NLRP3 Inflammasome at the Interface of Inflammation, Endothelial Dysfunction, and Type 2 Diabetes. Cells 2021; 10:314. [PMID: 33546399 PMCID: PMC7913585 DOI: 10.3390/cells10020314] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/24/2021] [Accepted: 01/30/2021] [Indexed: 01/08/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM), accounting for 90-95% cases of diabetes, is characterized by chronic inflammation. The mechanisms that control inflammation activation in T2DM are largely unexplored. Inflammasomes represent significant sensors mediating innate immune responses. The aim of this work is to present a review of links between the NLRP3 inflammasome, endothelial dysfunction, and T2DM. The NLRP3 inflammasome activates caspase-1, which leads to the maturation of pro-inflammatory cytokines interleukin 1β and interleukin 18. In this review, we characterize the structure and functions of NLRP3 inflammasome as well as the most important mechanisms and molecules engaged in its activation. We present evidence of the importance of the endothelial dysfunction as the first key step to activating the inflammasome, which suggests that suppressing the NLRP3 inflammasome could be a new approach in depletion hyperglycemic toxicity and in averting the onset of vascular complications in T2DM. We also demonstrate reports showing that the expression of a few microRNAs that are also known to be involved in either NLRP3 inflammasome activation or endothelial dysfunction is deregulated in T2DM. Collectively, this evidence suggests that T2DM is an inflammatory disease stimulated by pro-inflammatory cytokines. Finally, studies revealing the role of glucose concentration in the activation of NLRP3 inflammasome are analyzed. The more that is known about inflammasomes, the higher the chances to create new, effective therapies for patients suffering from inflammatory diseases. This may offer potential novel therapeutic perspectives in T2DM prevention and treatment.
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Affiliation(s)
- Ilona M. Gora
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland; (A.C.); (P.L.)
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Brigant B, Demont Y, Ouled-Haddou H, Metzinger-Le Meuth V, Testelin S, Garçon L, Metzinger L, Rochette J. TRIM37 is highly expressed during mitosis in CHON-002 chondrocytes cell line and is regulated by miR-223. Bone 2020; 137:115393. [PMID: 32353567 DOI: 10.1016/j.bone.2020.115393] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/24/2020] [Accepted: 04/24/2020] [Indexed: 02/06/2023]
Abstract
Multiple molecular disorders can affect mechanisms regulating proliferation and differentiation of growth plate chondrocytes. Mutations in the TRIM37 gene cause the Mulibrey nanism, a heritable growth disorder. Since chondrocytes are instrumental in long bone growth that is deficient in nanism, we hypothesized that TRIM37 defect could contribute to dysregulation of the chondrocyte cell cycle. Western blotting, confocal microscopy and imaging flow cytometry determined TRIM37 expression in CHON-002 cell lineage. We showed that TRIM37 is expressed during mitosis of chondrocytes and directly impacted their proliferation. During the chondrocyte cell cycle, TRIM37 was present in both nucleus and cytoplasm. During M phase we observed an increase of the TRIM37-Tubulin co-localization in comparison with G1, S and G2 phases. TRIM37 knock down inhibited proliferation, together with cell cycle anomalies and increased autophagy, while overexpression accordingly enhanced cell proliferation. We demonstrated that microRNA-223 directly targets TRIM37, and suggest that miR-223 regulates TRIM37 gene expression during the cell cycle. In summary, our results give clues to explain why TRIM37 deficiency in chondrocytes impacts bone growth. Modulating TRIM37 using miR-223 could be an approach to increase chondrogenesis.
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Affiliation(s)
- Benjamin Brigant
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | - Yohann Demont
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | - Hakim Ouled-Haddou
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | | | - Sylvie Testelin
- Maxillo-Facial Surgery Department, Centre Hospitalo-Universitaire d'Amiens, Avenue Laennec, 80000 Amiens, France; EA CHIMERE, université de Picardie-Jules-Verne, Avenue Laennec, 80000 Amiens, France; Facing Faces Institute, Avenue Laennec, 80000 Amiens, France
| | - Loïc Garçon
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | - Laurent Metzinger
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | - Jacques Rochette
- HEMATIM EA4666, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France.
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Exosomal miRNAs in osteoarthritis. Mol Biol Rep 2020; 47:4737-4748. [DOI: 10.1007/s11033-020-05443-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/06/2020] [Indexed: 12/17/2022]
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Long non-coding RNA activated by transforming growth factor beta alleviates lipopolysaccharide-induced inflammatory injury via regulating microRNA-223 in ATDC5 cells. Int Immunopharmacol 2019; 69:313-320. [PMID: 30771739 DOI: 10.1016/j.intimp.2019.01.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 01/29/2019] [Accepted: 01/31/2019] [Indexed: 12/13/2022]
Abstract
Osteoarthritis (OA) is a conversant joint disease, which seriously threatens the health of the elderly, and even leads to disability. Long non-coding RNA-activated by transforming growth factor beta (lncRNA-ATB) has been reported in diverse cancers. However, the functions of lncRNA-ATB in OA remain uninvestigated. The current study aimed to explore the impacts of lncRNA-ATB on lipopolysaccharide (LPS)-induced inflammatory injury in ATDC5 cells and to uncover the underlying mechanism. LPS-induced ATDC5 cell injury model was constructed, and the effects of lncRNA-ATB on LPS-injured cells were explored via analyzing cell viability, apoptosis, iNOS, COX-2, and inflammatory cytokines (IL-6 and TNF-α). Subsequently, the relationship between lncRNA-ATB and microRNA (miR)-223 was detected, and whether miR-223 was involved in modulating LPS-induced cells injury in ATDC5 cells was investigated. Finally, MyD88/NF-κB and p38MAPK pathways were assessed to explore the underlying mechanism. Results showed that LPS repressed cell viability, induced apoptosis, and promoted iNOS, COX-2, IL-6 and TNF-α expression. Additionally, we observed that lncRNA-ATB expression was down-regulated in LPS-injured cells, and lncRNA-ATB overexpression significantly alleviated LPS-induced inflammatory injury in ATDC5 cells. Interesting results revealed that miR-223 expression was down-regulated by lncRNA-ATB and miR-223 overexpression declined the protective effect of lncRNA-ATB on LPS-injured ATDC5 cells. Further, the signaling pathway experiments showed that lncRNA-ATB inhibited MyD88/NF-κB and p38MAPK pathways by down-regulating miR-223 in LPS-injured cells. These data demonstrated that lncRNA-ATB protected ATDC5 cells against LPS-induced inflammatory injury by repressing MyD88/NF-κB and p38MAPK pathways, which was mediated by down-regulation of miR-223.
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10
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Krill oil protects PC12 cells against methamphetamine-induced neurotoxicity by inhibiting apoptotic response and oxidative stress. Nutr Res 2018; 58:84-94. [DOI: 10.1016/j.nutres.2018.07.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 07/04/2018] [Accepted: 07/09/2018] [Indexed: 01/05/2023]
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Park S, Oh J, Kim YI, Choe SK, Chun CH, Jin EJ. Suppression of ABCD2 dysregulates lipid metabolism via dysregulation of miR-141:ACSL4 in human osteoarthritis. Cell Biochem Funct 2018; 36:366-376. [DOI: 10.1002/cbf.3356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/29/2018] [Accepted: 08/11/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Sujeong Park
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
| | - Jinjoo Oh
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
| | - Yong-Il Kim
- Department of Microbiology; Wonkwang University School of Medicine; Iksan South Korea
| | - Seong-Kyu Choe
- Department of Microbiology; Wonkwang University School of Medicine; Iksan South Korea
| | - Churl-Hong Chun
- Department of Orthopedic Surgery; Wonkwang University School of Medicine; Iksan South Korea
| | - Eun-Jung Jin
- Department of Biological Sciences, College of Natural Sciences; Wonkwang University; Iksan South Korea
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12
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Baicalin alleviates IL-1β-induced inflammatory injury via down-regulating miR-126 in chondrocytes. Biomed Pharmacother 2018; 99:184-190. [PMID: 29331857 DOI: 10.1016/j.biopha.2018.01.041] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/03/2018] [Accepted: 01/03/2018] [Indexed: 12/28/2022] Open
Abstract
Baicalin is a flavonoid extracted from Scutellaria baicalensis Georgi, with anti-inflammatory and anti-apoptotic activities. The objective of this study was to explore the effect and mechanism of baicalin on chondrocyte inflammatory response in OA. Different concentrations of IL-1β (0, 0.1, 2, 5 and 10 ng/mL) were used to simulate inflammatory injury in CHON-001 cells. The expression of miR-126 was altered by transfection with miR-126 mimic. Thereafter, cells were treated with baicalin, and cell viability, apoptosis, the expressions of apoptosis-related protein and pro-inflammatory factors were respectively detected using CCK-8 assay, flow cytometry, qRT-PCR and western blot analysis. We found that IL-1β induced a significantly inflammatory injury in CHON-001 cells. Baicalin alleviated IL-1β-induced inflammatory injury, as it increased cell viability, decreased cell apoptosis and repressed the production of IL-6, IL-8 and TNF-α. miR-126 was up-regulated by IL-1β treatment while was down-regulated by baicalin. More interestingly, the protective actions of baicalin on IL-1β-injured CHON-001 cells were partially eliminated by miR-126 overexpression. Further, NF-κB signaling pathway was activated by IL-1β, and deactivated by addition of baicalin. The deactivation of NF-κB signaling pathway induced by baicalin upon IL-1β exposure was recovered by miR-126 overexpression. In conclusion, this study demonstrated that baicalin protected CHON-001 cells against IL-1β-induced inflammatory injury possibly via down-regulation of miR-126 and thereby deactivation of NF-κB signaling pathway.
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Deori NM, Kale A, Maurya PK, Nagotu S. Peroxisomes: role in cellular ageing and age related disorders. Biogerontology 2018; 19:303-324. [PMID: 29968207 DOI: 10.1007/s10522-018-9761-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/27/2018] [Indexed: 12/12/2022]
Abstract
Peroxisomes are dynamic organelles essential for optimum functioning of a eukaryotic cell. Biogenesis of these organelles and the diverse functions performed by them have been extensively studied in the past decade. Their ability to perform functions depending on the cell type and growth conditions is unique and remarkable. Oxidation of fatty acids and reactive oxygen species metabolism are the two most important functions of these ubiquitous organelles. They are often referred to as both source and sink of reactive oxygen species in a cell. Recent research connects peroxisome dysfunction to fatal oxidative damage associated with ageing-related diseases/disorders. It is now widely accepted that mitochondria and peroxisomes are required to maintain oxidative balance in a cell. However, our understanding on the inter-dependence of these organelles to maintain cellular homeostasis of reactive oxygen species is still in its infancy. Herein, we summarize findings that highlight the role of peroxisomes in cellular reactive oxygen species metabolism, ageing and age-related disorders.
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Affiliation(s)
- Nayan M Deori
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Avinash Kale
- UM-DAE, Centre for Excellence in Basic Sciences, Health Centre, University of Mumbai, Mumbai, 400098, India
| | - Pawan K Maurya
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, Brazil
| | - Shirisha Nagotu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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14
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Mutant cartilage oligomeric matrix protein (COMP) compromises bone integrity, joint function and the balance between adipogenesis and osteogenesis. Matrix Biol 2018; 67:75-89. [PMID: 29309831 DOI: 10.1016/j.matbio.2017.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/23/2017] [Accepted: 12/27/2017] [Indexed: 12/23/2022]
Abstract
Mutations in COMP (cartilage oligomeric matrix protein) cause severe long bone shortening in mice and humans. Previously, we showed that massive accumulation of misfolded COMP in the ER of growth plate chondrocytes in our MT-COMP mouse model of pseudoachondroplasia (PSACH) causes premature chondrocyte death and loss of linear growth. Premature chondrocyte death results from activation of oxidative stress and inflammation through the CHOP-ER pathway and is reduced by removing CHOP or by anti-inflammatory or antioxidant therapies. Although the mutant COMP chondrocyte pathologic mechanism is now recognized, the effect of mutant COMP on bone quality and joint health (laxity) is largely unknown. Applying multiple analytic approaches, we describe a novel mechanism by which the deleterious consequences of mutant COMP retention results in upregulation of miR-223 disturbing the adipogenesis - osteogenesis balance. This results in reduction in bone mineral density, bone quality, mechanical strength and subchondral bone thickness. These, in addition to abnormal patterns of ossification at the ends of the femoral bones likely contribute to precocious osteoarthritis (OA) of the hips and knees in the MT-COMP mouse and PSACH. Moreover, joint laxity is compromised by abnormally thin ligaments. Altogether, these novel findings align with the PSACH phenotype of delayed ossification and bone age, extreme joint laxity and joint erosion, and extend our understanding of the underlying processes that affect bone in PSACH. These results introduce a novel finding that miR-223 is involved in the ossification defect in MT-COMP mice making it a therapeutic target.
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15
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Hydrostatic pressure as epigenetic modulator in chondrocyte cultures: A study on miRNA-155, miRNA-181a and miRNA-223 expression levels. J Biomech 2017; 66:165-169. [PMID: 29150345 DOI: 10.1016/j.jbiomech.2017.10.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/17/2017] [Accepted: 10/28/2017] [Indexed: 12/12/2022]
Abstract
Mechanical stimuli and hydrostatic pressure (HP) play an important role in the regulation of chondrocytes metabolism. Growing evidence demonstrated the ability of mechanical loading to modulate the expression of microRNA (miRNA) involved in chondrocytes homeostasis and in the pathogenesis of osteoarthritis (OA). The expression of miR-155, miR-181a and miR-223 in normal and OA chondrocyte cultures, and their potential modifications following exposure to three hours of a cyclic HP (1-5 MPa, frequency 0.25 Hz) were investigated. Also evaluated the expression of Chuk, regulator of the NF-kB pathway activation, which is a target gene of miR-223, was evaluated. Chondrocytes were collected immediately after pressurization (T0), and following 12, 24, and 48 h. Total RNA was extracted, reverse transcribed and used for real-time PCR. At basal condition, a significant increase of miR-155 and miR-181a was observed in OA in comparison to normal cells; on the contrary, no differences in miR-223 and Chuk expression levels were detected between normal and OA chondrocytes. miR-155 and miR-181a resulted significantly downregulated immediately after pressurization (T0) in OA cells. The pressure effect on miR-155 and miR-181a levels was maintained over time. No modifications of miR-223 were observed in response to HP, while Chuk levels resulted significantly reduced at T0 and after 12 h. Pressurization did not cause any modifications in normal cells. In conclusion, HP was able to modulate the expression of miRNA associated to OA pathogenesis. The preliminary results about Chuk response to pressure raised interest in its involvement in the possible HP induced NF-kB pathway modulation.
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16
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Song J, Kang YH, Yoon S, Chun CH, Jin EJ. HIF-1α:CRAT:miR-144-3p axis dysregulation promotes osteoarthritis chondrocyte apoptosis and VLCFA accumulation. Oncotarget 2017; 8:69351-69361. [PMID: 29050208 PMCID: PMC5642483 DOI: 10.18632/oncotarget.20615] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/14/2017] [Indexed: 11/25/2022] Open
Abstract
The functional role(s) of peroxisomes in osteoarthritis remains unclear. We demonstrated that peroxisomal dysfunction in osteoarthritis is responsible for very-long-chain fatty acid (VLCFA) accumulation. Through gene-profiling analyses, we identified CRAT as the gene responsible for this event. CRAT expression was suppressed in osteoarthritis chondrocytes, and its knockdown yielded pathological osteoarthritic characteristics, including VLCFA accumulation, apoptosis, autophagic inhibition, and mitochondrial dysfunction. Subsequent miRNA profiling revealed that peroxisomal dysfunction upregulates miR-144-3p, which overlapped with the osteoarthritis pathological characteristics observed upon CRAT knockdown. Moreover, knocking down HIF-1α in normal chondrocytes suppressed CRAT expression while stimulating miR-144-3p. Our data indicate that deregulation of a HIF-1a:CRAT:miR-144-3p axis impairs peroxisomal function during the pathogenesis of osteoarthritis.
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Affiliation(s)
- Jinsoo Song
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, Korea
| | - Yeon-Ho Kang
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, Korea
| | - Sik Yoon
- Department of Anatomy, Pusan National University School of Medicine, Yangsan, Korea
| | - Churl-Hong Chun
- Department of Orthopedic Surgery, Wonkwang University School of Medicine, Iksan, Chunbuk, Korea
| | - Eun-Jung Jin
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, Korea
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17
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Miao C, Zhang G, Xie Z, Chang J. MicroRNAs in the pathogenesis of type 2 diabetes: new research progress and future direction. Can J Physiol Pharmacol 2017; 96:103-112. [PMID: 28898588 DOI: 10.1139/cjpp-2017-0452] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
miRNA is a short non-coding RNA that can influence mRNA processing at the post-transcriptional level. A large number of miRNAs have been found in virtually all species so far, and these small molecules play an important role in many different physiological processes and various pathologic conditions, such as cell metabolism, cancer, autoimmune disease, and diabetes mellitus. T2D arises from a dysregulated response to the elevated glucose level in the circulation. The prevalence of T2D has increased dramatically in all age groups, and T2D in older adults is associated with more T2D complications and higher mortality. Despite the existing findings describing the pathological mechanism, T2D pathology is more complex and the pathophysiology of the disease is still not fully elucidated. In this review, we summarize the current understanding of miRNA-mediated modulation of gene expression in T2D pathogenesis, as well as related signaling pathways, and insight into the important role of miRNA in various T2D complications. Furthermore, the potential therapeutic value of miRNA for T2D patients is also discussed in detail.
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Affiliation(s)
- Chenggui Miao
- a Department of Pharmacy, School of Food and Drug, Anhui Science and Technology University, Fengyang 233100, China
| | - Guoxue Zhang
- b School of Science and Technology of Tea and Food, Anhui Agricultural University, Hefei 230036, China
| | - Zhongwen Xie
- b School of Science and Technology of Tea and Food, Anhui Agricultural University, Hefei 230036, China
| | - Jun Chang
- c Fourth Affiliated Hospital, Anhui Medical University, Hefei 230032, China
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18
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Chanchek N, Gersing AS, Schwaiger BJ, Nevitt MC, Neumann J, Joseph GB, Lane NE, Zarnowski J, Hofmann FC, Heilmeier U, McCulloch CE, Link TM. Association of diabetes mellitus and biochemical knee cartilage composition assessed by T 2 relaxation time measurements: Data from the osteoarthritis initiative. J Magn Reson Imaging 2017; 47:380-390. [PMID: 28556419 DOI: 10.1002/jmri.25766] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/05/2017] [Indexed: 12/24/2022] Open
Abstract
PURPOSE To investigate the association of the presence and severity of diabetes mellitus (DM) with articular cartilage composition, using magnetic resonance imaging (MRI)-based T2 relaxation time measurements, and structural knee abnormalities. MATERIALS AND METHODS In the Osteoarthritis Initiative 208, participants with DM (age 63.0 ± 8.9 years; 111 females) and risk factors for osteoarthritis (OA) or mild radiographic tibiofemoral OA (Kellgren-Lawrence [KL] grade ≤2) were identified and group-matched with 208 controls without DM (age 63.3 ± 9.1 years; 111 females). Subjects with diabetes-related renal or ophthalmological complications or insulin treatment at baseline (n = 50) were defined as severe DM. 3T MR images of the right knee were assessed for articular cartilage T2 , including texture and laminar analyses derived from the patella, medial, and lateral femur and tibia and for structural abnormalities using the modified whole-organ magnetic resonance imaging score (WORMS). Clustered linear regression analyses were used to assess associations of DM with MRI findings. RESULTS DM subjects had significantly higher cartilage T2 in the patella (mean difference 0.92 msec [95% confidence interval (CI) 0.79, 1.06]; P = 0.001) and medial femur (mean difference 0.36 msec [95% CI 0.27, 0.81]; P = 0.006) compared to controls. Averaged over all compartments, DM subjects showed significantly higher texture parameters (variance, P = 0.001; contrast, P = 0.002; entropy, P < 0.001). Subjects with severe DM additionally showed higher T2 in the medial tibial deep and superficial layers (P = 0.011 and P = 0.041) compared to controls. No significant differences in cartilage, meniscus, and overall WORMS were found between the groups (P > 0.05). CONCLUSION In comparison to nondiabetic controls, cartilage in DM subjects showed higher and more heterogeneous cartilage T2 values, indicating increased articular cartilage degeneration. This affected even more compartments in subjects with severe DM. LEVEL OF EVIDENCE 2 Technical Efficacy: 5 J. Magn. Reson. Imaging 2018;47:380-390.
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Affiliation(s)
- Nattagan Chanchek
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA.,Department of Radiology, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Alexandra S Gersing
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA.,Department of Radiology, Technical University of Munich, Munich, Germany
| | - Benedikt J Schwaiger
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Michael C Nevitt
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California, USA
| | - Jan Neumann
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Gabby B Joseph
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Nancy E Lane
- Department of Internal Medicine, UC Davis Medical Center, Sacramento, California, USA
| | - Julia Zarnowski
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Felix C Hofmann
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Ursula Heilmeier
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Charles E McCulloch
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California, USA
| | - Thomas M Link
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
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19
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Cipolla CM, Lodhi IJ. Peroxisomal Dysfunction in Age-Related Diseases. Trends Endocrinol Metab 2017; 28:297-308. [PMID: 28063767 PMCID: PMC5366081 DOI: 10.1016/j.tem.2016.12.003] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/04/2016] [Accepted: 12/07/2016] [Indexed: 12/21/2022]
Abstract
Peroxisomes carry out many key functions related to lipid and reactive oxygen species (ROS) metabolism. The fundamental importance of peroxisomes for health in humans is underscored by the existence of devastating genetic disorders caused by impaired peroxisomal function or lack of peroxisomes. Emerging studies suggest that peroxisomal function may also be altered with aging and contribute to the pathogenesis of a variety of diseases, including diabetes and its related complications, neurodegenerative disorders, and cancer. With increasing evidence connecting peroxisomal dysfunction to the pathogenesis of these acquired diseases, the possibility of targeting peroxisomal function in disease prevention or treatment becomes intriguing. Here, we review recent developments in understanding the pathophysiological implications of peroxisomal dysfunctions outside the context of inherited peroxisomal disorders.
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Affiliation(s)
- Cynthia M Cipolla
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Irfan J Lodhi
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA.
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20
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Wu CL, Kimmerling KA, Little D, Guilak F. Serum and synovial fluid lipidomic profiles predict obesity-associated osteoarthritis, synovitis, and wound repair. Sci Rep 2017; 7:44315. [PMID: 28317846 PMCID: PMC5357837 DOI: 10.1038/srep44315] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/03/2017] [Indexed: 01/10/2023] Open
Abstract
High-fat diet-induced obesity is a major risk factor for osteoarthritis (OA) and diminished wound healing. The objective of this study was to determine the associations among serum and synovial fluid lipid levels with OA, synovitis, adipokine levels, and wound healing in a pre-clinical obese mouse model of OA. Male C57BL/6 J mice were fed either a low-fat (10% kcal) or one of three high-fat (HF, 60% kcal) diets rich in saturated fatty acids (SFAs), ω-6 or ω-3 polyunsaturated FAs (PUFAs). OA was induced by destabilization of the medial meniscus. Mice also received an ear punch for evaluating wound healing. Serum and synovial fluid were collected for lipidomic and adipokine analyses. We demonstrated that the serum levels of ω-3 PUFAs were negatively correlated with OA and wound size, but positively correlated with adiponectin levels. In contrast, most ω-6 PUFAs exhibited positive correlations with OA, impaired healing, and inflammatory adipokines. Interestingly, levels of pentadecylic acid (C15:0, an odd-chain SFA) and palmitoleic acid were inversely correlated with joint degradation. This study extends our understanding of the links of FAs with OA, synovitis and wound healing, and reports newly identified serum and synovial fluid FAs as predictive biomarkers of OA in obesity.
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Affiliation(s)
- Chia-Lung Wu
- Department of Orthopaedic Surgery, Washington University, St. Louis MO, 63110, USA.,Shriners Hospitals for Children - St. Louis, St. Louis MO, 63110, USA
| | - Kelly A Kimmerling
- Department of Orthopaedic Surgery, Washington University, St. Louis MO, 63110, USA.,Shriners Hospitals for Children - St. Louis, St. Louis MO, 63110, USA
| | - Dianne Little
- Departments of Basic Medical Sciences and Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Washington University, St. Louis MO, 63110, USA.,Shriners Hospitals for Children - St. Louis, St. Louis MO, 63110, USA
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21
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Kim D, Song J, Kang Y, Park S, Kim YI, Kwak S, Lim D, Park R, Chun CH, Choe SK, Jin EJ. Fis1 depletion in osteoarthritis impairs chondrocyte survival and peroxisomal and lysosomal function. J Mol Med (Berl) 2016; 94:1373-1384. [PMID: 27497958 DOI: 10.1007/s00109-016-1445-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 06/16/2016] [Accepted: 06/29/2016] [Indexed: 11/26/2022]
Abstract
Cumulative evidence suggests the importance of organelle homeostasis in regulating metabolic functions in response to various cellular stresses. Particularly, the dynamism and health of the mitochondria-peroxisome network through fission and fusion are essential for cellular function; dysfunctional dynamism underlies the pathogenesis of several degenerative diseases including Parkinson's disease. Here, we investigated the role of Fis1 in cartilage homeostasis and its relevance to osteoarthritis (OA). We found that Fis1 is significantly suppressed in human OA chondrocytes compared to that in normal chondrocytes. Fis1 depletion through siRNA induced peroxisomal dysfunction. Moreover, Fis1 suppression altered miRNA profiles, especially those implicated in lysosomal regulation. Lysosomal destruction using LAMP-1-specific targeted nanorods or lysosomal dysfunction through chloroquine treatment resulted in enhanced chondrocyte apoptosis and/or suppression of autophagy. Accordingly, lysosomal activity and autophagy were severely decreased in OA chondrocytes despite abundant LAMP-1-positive organelles. Moreover, Fis1 morpholino-injected zebrafish embryos displayed lysosome accumulation, mitochondrial dysfunction, and peroxisome reduction. Collectively, these data suggest interconnected links among Fis1-modulated miRNA, lysosomes, and autophagy, which contributes to chondrocyte survival/apoptosis. This study represents the first functional study of Fis1 with its pathological relevance to OA. Our data suggest a new target for controlling cartilage-degenerative diseases, such as OA. KEY MESSAGE Fis1 suppression in OA chondrocytes induces accumulation and inhibition of lysosomes. Fis1 suppression alters miRNAs, especially those implicated in lysosomal regulation. Lysosomal destruction results in chondrocyte apoptosis and suppression of autophagy. Fis1 depletion in zebrafish causes lysosome accumulation, mitochondrial dysfunction, and peroxisome reduction. This is the first functional study of Fis1 and its pathological relevance to OA.
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Affiliation(s)
- Dongkyun Kim
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea
| | - Jinsoo Song
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea
| | - Yeonho Kang
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea
| | - Sujung Park
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea
| | - Yong-Il Kim
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Chunbuk, 570-749, South Korea
| | - Seongae Kwak
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Chunbuk, 570-749, South Korea
| | - Dongkwon Lim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 136-701, South Korea
| | - Raekil Park
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Chunbuk, 570-749, South Korea
| | - Churl-Hong Chun
- Department of Orthopedic Surgery, Wonkwang University School of Medicine, Iksan, Chunbuk, 570-749, South Korea
| | - Seong-Kyu Choe
- Department of Microbiology, Wonkwang University School of Medicine, Iksan, Chunbuk, 570-749, South Korea.
- Integrated Omics Institute, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea.
| | - Eun-Jung Jin
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea.
- Integrated Omics Institute, Wonkwang University, Iksan, Chunbuk, 570-749, South Korea.
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22
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Abstract
Micro ribonucleic acid (microRNA) regulation and expression has become an emerging field in determining the mechanisms regulating a variety of inflammation-mediated diseases. Several studies have focused on specific microRNAs that are differentially expressed in cases of osteoarthritis. Furthermore, several targets of these miRNAs important in disease progression have also been identified. In this review, we focus on microRNA biogenesis, regulation, detection, and quantification with an emphasis on cellular localization and how these concepts may be linked to disease processes such as osteoarthritis. Next, we review the relationships of specific microRNAs to certain features and risk factors associated with osteoarthritis such as inflammation, obesity, autophagy, and cartilage homeostasis. We also identify certain microRNAs that are differentially expressed in osteoarthritis but have unidentified targets and functions in the disease state. Lastly, we identify the potential use of microRNAs for therapeutic purposes and also mention certain remedies that regulate microRNA expression.
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Affiliation(s)
- Gregory R Sondag
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University (NEOMED), 4209 State Route 44, Rootstown, OH, 44272, USA
| | - Tariq M Haqqi
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University (NEOMED), 4209 State Route 44, Rootstown, OH, 44272, USA.
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23
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Overexpression of microRNA-634 suppresses survival and matrix synthesis of human osteoarthritis chondrocytes by targeting PIK3R1. Sci Rep 2016; 6:23117. [PMID: 26972586 PMCID: PMC4789801 DOI: 10.1038/srep23117] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 02/25/2016] [Indexed: 12/15/2022] Open
Abstract
Osteoarthritis (OA) is a degenerative disease characterized by deterioration of articular cartilage. Recent studies have demonstrated the importance of some microRNAs in cartilage damage. The aim of this study was to identify and characterize the expression of microRNA-634 (miR-634) in normal and OA chondrocytes, and to determine its role in OA pathogenesis. Human normal and OA chondrocytes obtained from patients were cultured in vitro. Transfection with miR-634 mimic or inhibitor was employed to investigate the effect of miR-634 on chondrocyte survival and matrix synthesis, and to identify miR-634 target. The results indicated that miR-634 was expressed at lower level in high grade OA chondrocyte compared with normal chondrocytes. Overexpression of miR-634 could inhibit cell survival and matrix synthesis in high grade OA chondrocytes. Furthermore, miR-634 targeted PIK3R1 gene that encodes the regulatory subunit 1 of class I PI3K (p85α) and exerted its inhibitory effect on the phosphorylation of Akt, mTOR, and S6 signal molecules in high grade OA chondrocytes. Therefore, the data suggested that miR-634 could suppress survival and matrix synthesis of high grade OA chondrocytes through targeting PIK3R1 gene to modulate the PI3K/Akt/S6 and PI3K/Akt/mTOR/S6 axes, with important implication for validating miR-634 as a potential target for OA therapy.
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24
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Kang YH, Park S, Ahn C, Song J, Kim D, Jin EJ. Beneficial reward-to-risk action of glucosamine during pathogenesis of osteoarthritis. Eur J Med Res 2015; 20:89. [PMID: 26520587 PMCID: PMC4628363 DOI: 10.1186/s40001-015-0176-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 09/22/2015] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Glucosamine is widely used to improve the symptoms and to delay the structural progression of osteoarthritis. However, its efficacy in osteoarthritis has been controversial and its underlying mechanism of action remains unclear. The aim of this study was to investigate the effects of glucosamine and the underlying mechanisms in human chondrocytes. METHODS Chondrocytes from normal human articular cartilage were treated with glucosamine (10-100 mM). Subsequently, cell death was analyzed by Annexin V staining and FACS and mitochondrial function was studied by measuring the mitopotential. Peroxisomal function was analyzed by BODIPY staining, and gene expression of PMP70 and acyl-CoA oxidase 1, by real-time PCR. Total lipids were analyzed by gas chromatography/mass spectrometry. Autophagy activation was determined by western blotting of beclin and light chain 3B. Autophagosome formation was analyzed by introduction of green fluorescent protein (GFP) LC3, and pexophagy was determined by introduction of mRFP-EGFP-SKL plasmids. RESULTS Treatment of chondrocytes with glucosamine exerts exposure time-dependent dual effects on apoptosis/autophagy. Short time exposure of glucosamine to chondrocytes activated autophagy, pexophagy, and peroxidation. On the other hand, long time exposure of glucosamine had opposite effects, namely accumulation of very long chain fatty acids and peroxisomal dysfunction. CONCLUSION We highlight the dual role of glucosamine in apoptosis/autophagy in human chondrocytes depending on exposure time. Although further research is required to fully understand the dual effects of glucosamine, dosage and duration of glucosamine treatment are clear contributing factors towards the line of beneficial reward-to-risk action.
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Affiliation(s)
- Yeon-Ho Kang
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
| | - Sujeong Park
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
| | - Chihyun Ahn
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
| | - Jinsoo Song
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
| | - Dongkyun Kim
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
| | - Eun-Jung Jin
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk, 570-749, Korea. .,Integrated Omics Institute, Wonkwang University, Iksan, Chunbuk, 570-749, Korea.
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25
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Farr RL, Lismont C, Terlecky SR, Fransen M. Peroxisome biogenesis in mammalian cells: The impact of genes and environment. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1863:1049-60. [PMID: 26305119 DOI: 10.1016/j.bbamcr.2015.08.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/13/2015] [Accepted: 08/18/2015] [Indexed: 01/16/2023]
Abstract
The initiation and progression of many human diseases are mediated by a complex interplay of genetic, epigenetic, and environmental factors. As all diseases begin with an imbalance at the cellular level, it is essential to understand how various types of molecular aberrations, metabolic changes, and environmental stressors function as switching points in essential communication networks. In recent years, peroxisomes have emerged as important intracellular hubs for redox-, lipid-, inflammatory-, and nucleic acid-mediated signaling pathways. In this review, we focus on how nature and nurture modulate peroxisome biogenesis and function in mammalian cells. First, we review emerging evidence that changes in peroxisome activity can be linked to the epigenetic regulation of cell function. Next, we outline how defects in peroxisome biogenesis may directly impact cellular pathways involved in the development of disease. In addition, we discuss how changes in the cellular microenvironment can modulate peroxisome biogenesis and function. Finally, given the importance of peroxisome function in multiple aspects of health, disease, and aging, we highlight the need for more research in this still understudied field.
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Affiliation(s)
- Rebecca L Farr
- Laboratory of Lipid Biochemistry and Protein Interactions, Department of Cellular and Molecular Medicine, KU Leuven-University of Leuven, Herestraat 49 box 601, B-3000 Leuven, Belgium; Department of Pharmacology, Wayne State University School of Medicine, 540 E. Canfield Ave., Detroit, MI 48201, USA
| | - Celien Lismont
- Laboratory of Lipid Biochemistry and Protein Interactions, Department of Cellular and Molecular Medicine, KU Leuven-University of Leuven, Herestraat 49 box 601, B-3000 Leuven, Belgium
| | - Stanley R Terlecky
- Department of Pharmacology, Wayne State University School of Medicine, 540 E. Canfield Ave., Detroit, MI 48201, USA
| | - Marc Fransen
- Laboratory of Lipid Biochemistry and Protein Interactions, Department of Cellular and Molecular Medicine, KU Leuven-University of Leuven, Herestraat 49 box 601, B-3000 Leuven, Belgium.
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26
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Liu D, Huang Y, Jia C, Li Y, Liang F, Fu Q. Administration of antagomir-223 inhibits apoptosis, promotes angiogenesis and functional recovery in rats with spinal cord injury. Cell Mol Neurobiol 2014; 35:483-91. [PMID: 25416533 DOI: 10.1007/s10571-014-0142-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 11/18/2014] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) are recently described as a class of short non-coding RNAs, which play important roles in post-transcriptional gene regulation and involved in many physiological and pathological processes. MicroRNA-223 (miR-223) has been showed highly elevated in the injured spinal cord. However, the potential role and underlying mechanisms of miR-223 in spinal cord injury (SCI) were incompletely understood. In the present study, we observed the persistent high levels of miR-223 in the injured spinal cord at different time points (1, 3, 7, and 14 days) after SCI. Besides, inhibiting miR-223 by intrathecally injection with antagomir-223 significantly improved recovery in hindlimb motor function and attenuated cell apoptosis in spinal cord-injured rats. Additionally, antagomir-223 treatment markedly decreased the pro-apoptotic protein levels, including Bax and cleaved caspase-3, up-regulated the anti-apoptotic Bcl-2 protein level, as well as the expression of GluR2. Moreover, inhibition of miR-223 promoted angiogenesis, as evidenced by the increased CD31 expression and microvascular density. Taken together, our results indicate that inhibition of miR-223 with antagomir-223 exerts protective role in functional recovery, angiogenesis, and anti-apoptosis during SCI. Thereby, miR-223 may be a promising target of therapy for SCI.
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Affiliation(s)
- Da Liu
- Department of Orthopaedic Surgery, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, 110004, People's Republic of China,
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