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Rajpar I, Kumar G, Fortina P, Tomlinson RE. Toll-like receptor 4 signaling in osteoblasts is required for load-induced bone formation in mice. iScience 2023; 26:106304. [PMID: 36950122 PMCID: PMC10025993 DOI: 10.1016/j.isci.2023.106304] [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: 09/02/2022] [Revised: 01/06/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
In mature bone, NGF is produced by osteoblasts following mechanical loading and signals through resident sensory nerves expressing its high affinity receptor, neurotrophic tyrosine kinase receptor type 1 (TrkA), to support bone formation. Here, we investigated whether osteoblastic expression of Toll-like receptor 4 (TLR4), a key receptor in the NF-κB signaling pathway, is required to initiate NGF-TrkA signaling required for load-induced bone formation. Although Tlr4 conditional knockout mice have normal skeletal mass and strength in adulthood, the loss of TLR4 signaling significantly reduced lamellar bone formation following loading. Inhibition of TLR4 signaling reduced Ngf expression in primary osteoblasts and RNA sequencing of bones from Tlr4 conditional knockout mice and wild-type littermates revealed dysregulated inflammatory signaling three days after osteogenic mechanical loading. In total, our study reveals an important role for osteoblastic TLR4 in the skeletal adaptation of bone to mechanical forces.
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Affiliation(s)
- Ibtesam Rajpar
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gaurav Kumar
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Paolo Fortina
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ryan E. Tomlinson
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
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Target Deconvolution of Fenofibrate in Nonalcoholic Fatty Liver Disease Using Bioinformatics Analysis. BIOMED RESEARCH INTERNATIONAL 2022; 2021:3654660. [PMID: 34988225 PMCID: PMC8720586 DOI: 10.1155/2021/3654660] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/12/2021] [Accepted: 12/14/2021] [Indexed: 01/30/2023]
Abstract
Background Nonalcoholic fatty liver disease (NAFLD) is a prevalent form of liver damage, affecting ~25% of the global population. NAFLD comprises a spectrum of liver pathologies, from hepatic steatosis to nonalcoholic steatohepatitis (NASH), and may progress to liver fibrosis and cirrhosis. The presence of NAFLD correlates with metabolic disorders such as hyperlipidemia, obesity, blood hypertension, cardiovascular, and insulin resistance. Fenofibrate is an agonist drug for peroxisome proliferator-activated receptor alpha (PPARα), used principally for treatment of hyperlipidemia. However, fenofibrate has recently been investigated in clinical trials for treatment of other metabolic disorders such as diabetes, cardiovascular disease, and NAFLD. The evidence to date indicates that fenofibrate could improve NAFLD. While PPARα is considered to be the main target of fenofibrate, fenofibrate may exert its effect through impact on other genes and pathways thereby alleviating, and possibly reversing, NAFLD. In this study, using bioinformatics tools and gene-drug, gene-diseases databases, we sought to explore possible targets, interactions, and pathways involved in fenofibrate and NAFLD. Methods We first determined significant protein interactions with fenofibrate in the STITCH database with high confidence (0.7). Next, we investigated the identified proteins on curated targets in two databases, including the DisGeNET and DISEASES databases, to determine their association with NAFLD. We finally constructed a Venn diagram for these two collections (curated genes-NAFLD and fenofibrate-STITCH) to uncover possible primary targets of fenofibrate. Then, Gene Ontology (GO) and KEGG were analyzed to detect the significantly involved targets in molecular function, biological process, cellular component, and biological pathways. A P value < 0.01 was considered the cut-off criterion. We also estimated the specificity of targets with NAFLD by investigating them in disease-gene associations (STRING) and EnrichR (DisGeNET). Finally, we verified our findings in the scientific literature. Results We constructed two collections, one with 80 protein-drug interactions and the other with 95 genes associated with NAFLD. Using the Venn diagram, we identified 11 significant targets including LEP, SIRT1, ADIPOQ, PPARA, SREBF1, LDLR, GSTP1, VLDLR, SCARB1, MMP1, and APOC3 and then evaluated their biological pathways. Based on Gene Ontology, most of the targets are involved in lipid metabolism, and KEGG enrichment pathways showed the PPAR signaling pathway, AMPK signaling pathway, and NAFLD as the most significant pathways. The interrogation of those targets on authentic disease databases showed they were more specific to both steatosis and steatohepatitis liver injury than to any other diseases in these databases. Finally, we identified three significant genes, APOC3, PPARA, and SREBF1, that showed robust drug interaction with fenofibrate. Conclusion Fenofibrate may exert its effect directly or indirectly, via modulation of several key targets and pathways, in the treatment of NAFLD.
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Yu S, Wu N, Zhu J, Liu Y, Han J. Pyrrolidine Dithiocarbamate Facilitates Arsenic Trioxide Against Pancreatic Cancer via Perturbing Ubiquitin-Proteasome Pathway. Cancer Manag Res 2020; 12:13149-13159. [PMID: 33376406 PMCID: PMC7764808 DOI: 10.2147/cmar.s278674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/21/2020] [Indexed: 01/06/2023] Open
Abstract
Purpose To investigate whether pyrrolidine dithiocarbamate (PDTC) could facilitate arsenic trioxide (ATO) to induce apoptosis in pancreatic cancer cells via perturbing ubiquitin-proteasome pathway. Methods Mass spectrometry was performed to examine the interaction between PDTC and ATO, and the data showed they could form a complex termed PDTC-ATO. Inhibiting effects on cell viability were examined by CCK-8 test, and apoptosis was examined by flow cytometry. Four treatment arms (n = 6), including the control, PDTC, ATO, and PDTC-ATO, were evaluated using BALB/c nude mouse models bearing a xenograft tumor of SW1990 human pancreatic cancer line. Western blot, immunohistochemistry assays were to detect the mechanism. Results The results showed that PDTC-ATO had higher inhibiting effects on proliferation of pancreatic cancer cells than ATO in vitro. In bearing-tumor mice, PDTC-ATO inhibited tumor growth by 79%, being more potent than ATO (by 46%) or PDTC (by 35%) compared to the control. Results of Western blot and immunohistochemistry showed proteasome inhibition and apoptotic cell death, together with obvious suppression of associating E3 ubiquitin ligase activity, occurred more frequently in tumors treated with PDTC-ATO than those with ATO. Conclusion PDTC demonstrated the function to facilitate ATO against pancreatic cancer due to forming a stable complex to perturb ubiquitin-proteasome pathway.
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Affiliation(s)
- Simin Yu
- Department of Traditional Chinese Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ning Wu
- Department of Oncology, Shanghai Pudong New Area Gongli Hospital, Shanghai, People's Republic of China
| | - Jianmin Zhu
- Shanghai Clinical Center, Chinese Academy of Sciences/Xuhui Central Hospital, Shanghai, People's Republic of China
| | - Ying Liu
- Department of Oncology, Yunnan Provincial Hospital of Chinese Medicine, Kunming, People's Republic of China
| | - Jinbin Han
- Department of Traditional Chinese Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Protective Effects of Phellinus linteus Mycelium on the Development of Osteoarthritis after Monosodium Iodoacetate Injection. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:7240858. [PMID: 32908566 PMCID: PMC7450358 DOI: 10.1155/2020/7240858] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/15/2020] [Accepted: 07/25/2020] [Indexed: 12/18/2022]
Abstract
Objective The aim of this study was to identify the protective effects of Phellinus linteus mycelium (PLM) and its possible mechanisms in a model of monosodium iodoacetate- (MIA-) induced osteoarthritis (OA). Methods Intra-articular injection of MIA was injected to 50 μL with 80 mg/mL using a 0.3 mL insulin syringe into the right knee joint. Changes in hindpaw weight-bearing distribution between the right (osteoarthritic) and left (contralateral control) legs were used as an index of joint discomfort. PLM (50, 100, and 200 mg/kg body weight) was orally administered once daily for 14 days from day 7 after MIA treatment. And then, various factors associated with inflammatory response and cartilage degeneration in cartilage tissues detected by western blotting. Results PLM treatment showed a concentration-dependent elevation in change in hindpaw weight-bearing distribution (HWBD). PLM200 demonstrated the capacity to significantly increase HWBD, indicating that the change in weight-bearing distribution means the reduction of spontaneous pain. Our results indicate that PLM suppressed the inflammatory factors via NF-κB signaling pathway induced by p38 phosporlyation. Moreover, PLM200 exhibited a significant reduction of ROS produced by the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. PLM100 and PLM200 inhibited the levels of matrix metalloproteinase (MMP)-1, one of proteinase that degrades extracellular matrix (ECM). Conclusions Taken together, our results indicated that PLM has a strong chondroprotective effect through the suppression both ROS production and inflammation.
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Ji YR, Chen Y, Chen YN, Qiu GL, Wen JG, Zheng Y, Li XF, Cheng H, Li YH, Li J. Dexmedetomidine inhibits the invasion, migration, and inflammation of rheumatoid arthritis fibroblast-like synoviocytes by reducing the expression of NLRC5. Int Immunopharmacol 2020; 82:106374. [PMID: 32163856 DOI: 10.1016/j.intimp.2020.106374] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/13/2020] [Accepted: 03/03/2020] [Indexed: 02/07/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic, autoimmune disease characterized by inflammatory synovitis, but its pathogenesis remains unclear. NLRC5 is a newly discovered member of the NLR family that is effective in regulating autoimmunity, inflammatory responses, and cell death processes. Dexmedetomidine (DEX) has been reported to have a variety of pharmacological effects, including anti-inflammatory and analgesic effects. However, the role of DEX in RA has not been explored. In adjuvant-induced arthritis (AA) rat models, DEX (10 μg/kg and 20 μg/kg) reduced the pathological score, the arthritis score, paw swelling volume, and the serum levels of IL-1β, IL-6, IL-17A, and TNF-α. Moreover, by using Western blot and real-time quantitative PCR (RT-qPCR), it was demonstrated that DEX can inhibit the expression of IL-1β, IL-6, MMP-3, MMP-9 and P-P65 in the synovial tissue of AA rats. In human rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs), DEX (250 nM and 500 nM) was found to inhibit the expression of IL-1β, IL-6, MMP-3, MMP-9, and P-P65 following stimulation with TNF-α. Moreover, DEX can inhibit the invasion and migration of RA-FLSs stimulated by TNF-α. Finally, the expression of NLRC5 in RA-FLSs and AA rat models was also reduced by DEX. After silencing NLRC5 in RA-FLSs, the expression of IL-1β, IL-6, MMP-3, MMP-9, and P-P65, as well as the invasion and migration of cells, were significantly reduced. These results indicate that DEX inhibits the invasion, migration, and inflammation of RA-FLSs by reducing the expression of NLRC5 and inhibiting the NF-κB activation.
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Affiliation(s)
- Ya-Ru Ji
- First Affiliated Hospital, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Yu Chen
- School of Pharmacy, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Yan-Ni Chen
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Gao-Lin Qiu
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Jia-Gen Wen
- School of Pharmacy, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Yan Zheng
- First Affiliated Hospital, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Xiao-Feng Li
- School of Pharmacy, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Huang Cheng
- School of Pharmacy, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China
| | - Yuan-Hai Li
- First Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
| | - Jun Li
- School of Pharmacy, Anhui Medical University, Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei 230032, China, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, China.
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Li Y, Huang T, Fu Y, Wang T, Zhao T, Guo S, Sun Y, Yang Y, Li C. Antitumor activity of a novel dual functional podophyllotoxin derivative involved PI3K/AKT/mTOR pathway. PLoS One 2019; 14:e0215886. [PMID: 31557166 PMCID: PMC6763125 DOI: 10.1371/journal.pone.0215886] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/21/2019] [Indexed: 12/26/2022] Open
Abstract
The progression of cancer through local expansion and metastasis is well recognized, but preventing these characteristic cancer processes is challenging. To this end, a new strategy is required. In this study, we presented a novel dual functional podophyllotoxin derivative, 2-pyridinealdehyde hydrazone dithiocarbamate S-propionate podophyllotoxin ester (PtoxPdp), which inhibited both matrix metalloproteinases and Topoisomerase II. This new podophyllotoxin derivative exhibited significant anti-proliferative, anti-metastatic that correlated with the downregulation of matrix metalloproteinase. In a xenograft animal local expansion model, PtoxPdp was superior to etoposide in tumor repression. A preliminary mechanistic study revealed that PtoxPdp induced apoptosis and autophagy via the PI3K/AKT/mTOR pathway. Furthermore, PtoxPdp could also inhibit epithelial-mesenchymal transition, which was achieved by downregulating both PI3K/AKT/mTOR and NF-κB/Snail pathways. Taken together, our results reveal that PtoxPdp is a promising antitumor drug candidate.
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Affiliation(s)
- Yongli Li
- College of Basic Medical Science, Sanquan College of Xinxiang Medical University, Xinxiang, Henan, P. R. China
- * E-mail: (CL); (YL)
| | - Tengfei Huang
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Yun Fu
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Tingting Wang
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Tiesuo Zhao
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Sheng Guo
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Yanjie Sun
- Experimental Teaching Center of Biology and Basic Medicine, Sanquan College of Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Yun Yang
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
| | - Changzheng Li
- College of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, P. R. China
- Experimental Teaching Center of Biology and Basic Medicine, Sanquan College of Xinxiang Medical University, Xinxiang, Henan, P. R. China
- * E-mail: (CL); (YL)
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Ayman M, El-Messery SM, Habib EE, Al-Rashood ST, Almehizia AA, Alkahtani HM, Hassan GS. Targeting microbial resistance: Synthesis, antibacterial evaluation, DNA binding and modeling study of new chalcone-based dithiocarbamate derivatives. Bioorg Chem 2019; 85:282-292. [DOI: 10.1016/j.bioorg.2019.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 12/29/2018] [Accepted: 01/01/2019] [Indexed: 12/31/2022]
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ANKRD49 inhibits etoposide-induced intrinsic apoptosis of GC-1 cells by modulating NF-κB signaling. Mol Cell Biochem 2019; 457:21-29. [DOI: 10.1007/s11010-019-03508-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 02/14/2019] [Indexed: 01/09/2023]
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Madecassoside impedes invasion of rheumatoid fibroblast-like synoviocyte from adjuvant arthritis rats via inhibition of NF-κB-mediated matrix metalloproteinase-13 expression. Chin J Nat Med 2018; 16:330-338. [PMID: 29860993 DOI: 10.1016/s1875-5364(18)30064-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Indexed: 12/25/2022]
Abstract
Fibroblast-like synoviocytes (FLS) play a pivotal role in Rheumatoid arthritis (RA) pathogenesis through aggressive migration and invasion. Madecassoside (Madec), a triterpenoid saponin present in Centella asiatica herbs, has a potent anti-inflammatory effect. In the present study, Madec exerted an obvious therapeutic effect in reversing the histological lesions in adjuvant-induced arthritis (AIA) rats. To recognize the anti-rheumatoid potentials of Madec, we further investigated whether Madec interfered with FLS invasion and metalloproteinase (MMP) expression. In cultures of primary FLS isolated from the AIA rats, Madec (10 and 30 μmol·L-1) was proven to considerably inhibit migration and invasion of FLS induced by interleukin 1β (IL-1β), but exhibiting no obvious effect on cell proliferation. Madec repressed IL-1β-triggered FLS invasion by prohibiting the expression of MMP-13. Additionally, Madec suppressed MMP-13 transcription via inhibiting the MMP-13 promoter-binding activity of NF-κB. Our results further showed that Madec down-regulated the translocation and phosphorylation of NF-κB as demonstrated by Western blotting and immunofluorescence assays. In conclusion, our results suggest that Madec exerts anti-RA activity via inhibiting the NF-κB/MMP-13 pathway.
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Chen H, Shao X, Li L, Zheng C, Xu X, Hong X, Li X, Wu M. Electroacupuncture serum inhibits TNF‑α‑mediated chondrocyte inflammation via the Ras‑Raf‑MEK1/2‑ERK1/2 signaling pathway. Mol Med Rep 2017; 16:5807-5814. [PMID: 28849229 PMCID: PMC5865778 DOI: 10.3892/mmr.2017.7366] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 06/20/2017] [Indexed: 12/14/2022] Open
Abstract
The Ras-Raf-mitogen-activated protein kinase kinase (MEK)1/2-extracellular signal-regulated kinase (ERK)1/2 signaling pathway contributes to the release of chondral matrix-degrading enzymes and accelerates the degradation of articular cartilage. Electroacupuncture (EA) treatment has been widely used for the treatment of osteoarthritis (OA); however, the mechanism underlying the effects of EA on OA remains unclear. Therefore, the present study evaluated the anti-inflammatory effects and potential underlying mechanisms of EA serum (EAS) on tumor necrosis factor (TNF)-α-mediated chondrocyte inflammation. A total of 30 Sprague Dawley rats were randomly divided into three groups: The blank group; experimental group I, which received 15 min of EA treatment; and experimental group II, which received 30 min of EA treatment. Subsequently, serum samples were obtained. Chondrocytes were isolated from the knee cartilage of Sprague Dawley rats, and were identified using collagen type II immunohistochemistry. TNF-α-treated chondrocytes were used as a cell model, and subsequently the cells were treated with EAS from each group for various durations. The results demonstrated that EAS treatment significantly promoted the viability and inhibited the apoptosis of TNF-α-treated chondrocytes. In addition, interleukin (IL)-1β concentration was significantly increased in the model group compared with in the control group, whereas EAS significantly reduced IL-1β concentration in TNF-α-treated chondrocytes. Furthermore, the protein expression levels of Ras, Raf and MEK1/2 were reduced in the EAS groups compared with in the model group. EAS also significantly inhibited the phosphorylation of ERK1/2, and the expression of downstream regulators matrix metalloproteinase (MMP)-3 and MMP-13. In conclusion, these results indicated that EAS may inhibit TNF-α-mediated chondrocyte inflammation via the Ras-Raf-MEK1/2-ERK1/2 signaling pathway in vitro, thus suggesting that EAS may be considered a potential therapeutic strategy for the treatment of OA.
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Affiliation(s)
- Houhuang Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xiang Shao
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Li Li
- Department of Acupuncture and Moxibustion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
| | - Chunsong Zheng
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xin Xu
- Department of Acupuncture and Moxibustion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
| | - Xiue Hong
- Department of Acupuncture and Moxibustion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
| | - Xihai Li
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Mingxia Wu
- Department of Acupuncture and Moxibustion, The Second Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003, P.R. China
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Zhang D, Qiu B, Wang Y, Guan Y, Zhang L, Wu A. Temozolomide increases MHC-I expression via NF-κB signaling in glioma stem cells. Cell Biol Int 2017; 41:680-690. [PMID: 28403532 DOI: 10.1002/cbin.10773] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 04/08/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Dongyong Zhang
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
| | - Bo Qiu
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
| | - Yunjie Wang
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
| | - Yanlei Guan
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
| | - Luyang Zhang
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
| | - Anhua Wu
- Department of Neurosurgery; The First Affiliated Hospital of China Medical University; 155 Nanjingbei Street, Heping District Shenyang 110001 China
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Liu SC, Chiu CP, Tsai CH, Hung CY, Li TM, Wu YC, Tang CH. Soya-cerebroside, an extract of Cordyceps militaris, suppresses monocyte migration and prevents cartilage degradation in inflammatory animal models. Sci Rep 2017; 7:43205. [PMID: 28225075 PMCID: PMC5320555 DOI: 10.1038/srep43205] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 01/20/2017] [Indexed: 01/15/2023] Open
Abstract
Pathophysiological events that modulate the progression of structural changes in osteoarthritis (OA) include the secretion of inflammatory molecules, such as proinflammatory cytokines. Interleukin-1beta (IL-1β) is the prototypical inflammatory cytokine that activates OA synovial cells to release cytokines and chemokines in support of the inflammatory response. The monocyte chemoattractant protein-1 (MCP-1/CCL2) is one of the key chemokines that regulate migration and infiltration of monocytes in response to inflammation. We show in this study that IL-1β-induced MCP-1 expression and monocyte migration in OA synovial fibroblasts (OASFs) is effectively inhibited by soya-cerebroside, an extract of Cordyceps militaris. We found that soya-cerebroside up-regulated of microRNA (miR)-432 expression via inhibiting AMPK and AKT signaling pathways in OASFs. Soya-cerebroside also effectively decreased monocyte infiltration and prevented cartilage degradation in a rat inflammatory model. Our findings are the first to demonstrate that soya-cerebroside inhibits monocyte/macrophage infiltration into synoviocytes, attenuating synovial inflammation and preventing cartilage damage by reducing MCP-1 expression in vitro and in vivo. Taken together, we suggest a novel therapeutic strategy based on the use of soya-cerebroside for the management of OA.
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Affiliation(s)
- Shan-Chi Liu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Peng Chiu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Hao Tsai
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan.,Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Yin Hung
- Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Yun-Lin County, Taiwan
| | - Te-Mao Li
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan.,Research Center for Chinese Herbal Medicine, China Medical University, Taichung, Taiwan.,Chinese Medicine Research and Development Center, China Medical University Hospital, Taiwan.,Center of Molecular Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
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Pathophysiological changes induced by Pseudomonas aeruginosa infection are involved in MMP-12 and MMP-13 upregulation in human carcinoma epithelial cells and a pneumonia mouse model. Infect Immun 2015; 83:4791-9. [PMID: 26438797 PMCID: PMC4645383 DOI: 10.1128/iai.00619-15] [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: 05/14/2015] [Accepted: 09/18/2015] [Indexed: 12/20/2022] Open
Abstract
Pseudomonas aeruginosa infections persist in patients with cystic fibrosis (CF) and drive lung disease progression. P. aeruginosa potently activates the innate immune system mostly through the recognition of pathogen-associated molecular patterns, such as flagellin. Matrix metalloproteinases 12 and 13 (MMP-12 and MMP-13, respectively) exacerbate chronic lung infection and inflammation by promoting uncontrolled tissue rearrangements and fibrosis, yet the underlying molecular mechanisms by which this occurs remain largely unknown. In this study, we used quantitative bacteriology, histological examination, and proinflammatory cytokine levels to evaluate the effects of MMP-12 and MMP-13 on P. aeruginosa strain K-induced infection and pneumonia in H292 epithelial cells and mice, respectively. Under inflammatory stimulation, mRNA and protein expression levels of proinflammatory mediators were higher in strain K-infected mice and cells than in uninfected counterparts, in which MMP-12 and MMP-13 expression reached levels similar to those observed in epithelial cells. Moreover, we also found that the NF-κB pathway might be involved in the induction of cytokines in response to strain K infection. Taken together, these data suggest that MMP-12 and MMP-13 alter strain K infection in mice and play a role in inflammatory regulation by modulating cytokine levels.
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Liu SC, Lee HP, Hung CY, Tsai CH, Li TM, Tang CH. Berberine attenuates CCN2-induced IL-1β expression and prevents cartilage degradation in a rat model of osteoarthritis. Toxicol Appl Pharmacol 2015; 289:20-9. [PMID: 26344001 DOI: 10.1016/j.taap.2015.08.020] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/20/2015] [Accepted: 08/31/2015] [Indexed: 01/04/2023]
Abstract
Connective tissue growth factor (CTGF; also known as CCN2) is an inflammatory mediator that is abundantly expressed in osteoarthritis (OA). Interleukin-1β (IL-1β) plays a pivotal role in OA pathogenesis. Berberine exhibits an anti-inflammatory effect, but the mechanisms by which it modulates CCN2-induced IL-1β expression in OA synovial fibroblasts (OASFs) remain unknown. We showed that CCN2-induced IL-1β expression is mediated by the activation of αvβ3/αvβ5 integrin-dependent reactive oxygen species (ROS) generation, and subsequent activation of apoptosis signal-regulating kinase 1 (ASK1), p38/JNK, and nuclear factor-κB (NF-κB) signaling pathways. This IL-1β expression in OASFs is attenuated by N-acetylcysteine (NAC), inhibitors of ASK1, p38, or JNK, or treatment with berberine. Furthermore, berberine also reverses cartilage damage in an experimental model of collagenase-induced OA (CIOA). We observed that CCN2 increased IL-1β expression via αvβ3/αvβ5 integrins, ROS, and ASK1, p38/JNK, and NF-κB signaling pathways. Berberine was found to inhibit these signaling components in OASFs in vitro and prevent cartilage degradation in vivo. We suggest a novel therapeutic strategy of using berberine for managing OA.
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Affiliation(s)
- Shan-Chi Liu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Hsiang-Ping Lee
- Graduate Institute of Chinese Medicine, China Medical University, Taichung, Taiwan; Department of Chinese Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Yin Hung
- Department of Orthopaedic Surgery, China Medical University Beigang Hospital, Yun-Lin County, Taiwan
| | - Chun-Hao Tsai
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan; Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Te-Mao Li
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan; Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan; Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan.
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Wang HL, Fan SS, Pang M, Liu YH, Guo M, Liang JB, Zhang JL, Yu BF, Guo R, Xie J, Zheng GP. The Ankyrin Repeat Domain 49 (ANKRD49) Augments Autophagy of Serum-Starved GC-1 Cells through the NF-κB Pathway. PLoS One 2015; 10:e0128551. [PMID: 26043108 PMCID: PMC4455995 DOI: 10.1371/journal.pone.0128551] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 04/28/2015] [Indexed: 11/18/2022] Open
Abstract
The ankyrin repeat domain 49 (ANKRD49) is an evolutionarily conserved protein highly expressed in testes. However, the function of ANKRD49 in spermatogenesis is unknown. In this study, we found that ANKRD49 resides primarily in nucleus of spermatogonia, spermatocytes and round spermatids. ANKRD49 overexpression augments starvation-induced autophagy in male germ GC-1 cells whereas shRNA knockdown of ANKRD49 attenuates the autophagy. Inhibition of NF-κB pathway by its inhibitors or p65 siRNA prevents the ANKRD49-dependent autophagy augmentation, demonstrating that ANKRD49 enhances autophagy via NF-κB pathway. Our findings suggest that ANKRD49 plays an important role in spermatogenesis via promotion of autophagy-dependent survival.
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Affiliation(s)
- Hai-long Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Sha-sha Fan
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Min Pang
- Department of Respiratory, the First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Yi-heng Liu
- Class 041002, Department of Anestesioloy, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Min Guo
- Center of Laboratory Animal, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Jun-bo Liang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Tsinghua University, 5 Dong Dan San Tiao, Beijing, 100005, China
| | - Jian-lin Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Bao-feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Rui Guo
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
| | - Guo-ping Zheng
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
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Blockade of 11β-hydroxysteroid dehydrogenase type 1 enzyme inhibits experimental collagenase-induced osteoarthritis. Mol Med Rep 2015; 11:2071-5. [DOI: 10.3892/mmr.2014.2983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 09/24/2014] [Indexed: 01/15/2023] Open
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Huang Y, Lu Y, Zhang L, Yan J, Jiang J, Jiang H. Perineural dexmedetomidine attenuates inflammation in rat sciatic nerve via the NF-κB pathway. Int J Mol Sci 2014; 15:4049-59. [PMID: 24663080 PMCID: PMC3975383 DOI: 10.3390/ijms15034049] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 02/26/2014] [Accepted: 02/27/2014] [Indexed: 02/03/2023] Open
Abstract
Recent studies have shown that dexmedetomidine exerts an anti-inflammatory effect by reducing serum levels of inflammatory factors, however, the up-stream mechanism is still unknown. The transcription factor NF-κB enters the nucleus and promotes the transcription of its target genes, including those encoding the pro-inflammatory cytokines IL-6 and TNF-α. In this study, we established a rat model that simulates a clinical surgical procedure to investigate the anti-inflammatory effect of perineural administration of dexmedetomidine and the underlying mechanism. Dexmedetomidine reduced the sciatic nerve levels of IL-6 and TNF-α at both the mRNA and protein level. Dexmedetomidine also inhibited the translocation of activated NF-κB to the nucleus and the binding activity of NF-κB. The anti-inflammatory effect is confirmed to be dose-dependent. Finally, pyrrolidine dithiocarbamate also reduced the levels of IL-6 and TNF-α and the activation of NF-κB. In conclusion, dexmedetomidine inhibited the nuclear translocation and binding activity of activated NF-κB, thus reducing inflammatory cytokines.
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Affiliation(s)
- Yan Huang
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
| | - Yi Lu
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
| | - Lei Zhang
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
| | - Jia Yan
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
| | - Jue Jiang
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
| | - Hong Jiang
- Department of Anesthesiology, School of Medicine, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200011, China.
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Cordycepin prevented IL-β-induced expression of inflammatory mediators in human osteoarthritis chondrocytes. INTERNATIONAL ORTHOPAEDICS 2013; 38:1519-26. [PMID: 24346509 DOI: 10.1007/s00264-013-2219-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 11/18/2013] [Indexed: 02/02/2023]
Abstract
PURPOSE Cordycepin, a nucleoside derivative isolated from Cordyceps, has been reported to exert anti-inflammatory, antitumor, antidiabetic and renoprotective effects. Osteoarthritis (OA) is a degenerative joint disease with an inflammatory component that drives the degradation of cartilage extracellular matrix. This study aimed to assess the effects of cordycepin on human OA chondrocytes. METHODS In this study, human OA chondrocytes were pretreated with cordycepin at 10, 50 or 100 μM and subsequently stimulated with interleukin-1β (IL-1β) (5 ng/ml) for 24 h. Production of prostaglandin E2 (PGE2) and nitric oxide (NO) were evaluated by the Griess reaction and an enzyme-linked immunosorbent assay (ELISA). Gene expression of matrix metalloproteinase (MMP)-13, IL-6, inducible nitric oxide synthase (iNOS) and cyclo-oxygenase (COX-2) was measured by real-time polymerase chain reaction (PCR). MMP-13 and IL-6 proteins in culture medium were determined using cytokine-specific ELISA. Western immunoblotting was used to analyse the iNOS and COX-2 protein production in culture medium. Nuclear factor kappa-B (NF-κB) activity regulation was explored using Western immunoblotting. RESULTS Pretreatment with cordycepin significantly inhibited the production of PGE2 and NO induced by IL-1β. Cordycepin also significantly decreased the IL-1β-stimulated gene expression and production of MMP-13, IL-6, iNOS and COX-2 in OA chondrocytes. Pretreatment with cordycepin attenuated IL-1β-induced activation of NF-κB by suppressing degradation of its inhibitory protein nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha (IκB-α) in the cytoplasm. CONCLUSIONS We show for the first time the anti-inflammatory activity of cordycepin in human OA chondrocytes. Thus, with this unique profile of actions, cordycepin may prove to be a potentially attractive and new therapeutic/preventive agent for OA.
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Ying X, Chen X, Cheng S, Shen Y, Peng L, Xu HZ. Piperine inhibits IL-β induced expression of inflammatory mediators in human osteoarthritis chondrocyte. Int Immunopharmacol 2013; 17:293-9. [PMID: 23838114 DOI: 10.1016/j.intimp.2013.06.025] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 06/13/2013] [Accepted: 06/14/2013] [Indexed: 12/17/2022]
Abstract
Black pepper (Piper nigrum) is a common remedy in Traditional Chinese Medicine and possesses diverse biological activities including anti-inflammatory properties. Osteoarthritis (OA) is a degenerative joint disease with an inflammatory component that drives the degradation of cartilage extracellular matrix. The present study aimed to assess the effects of piperine, the active phenolic component in black pepper extract, on human OA chondrocytes. In this study, human OA chondrocytes were pretreated with piperine at 10, 50 or 100μg/ml and subsequently stimulated with IL-1β (5ng/ml) for 24h. Production of PGE2 and NO was evaluated by the Griess reaction and an ELISA. Gene expression of MMP-3, MMP-13, iNOS and COX-2 was measured by real-time PCR. MMP-3 and MMP-13 proteins in culture medium were determined using cytokine-specific ELISA. Western immunoblotting was used to analyze the iNOS and COX-2 protein production in the culture medium. The regulation of NF-kB activity and the degradation of IkB were explored using luciferase and Western immunoblotting, respectively. We found that piperine inhibited the production of PGE2 and NO induced by IL-1β. Piperine significantly decreased the IL-1β-stimulated gene expression and production of MMP-3, MMP-13, iNOS and COX-2 in human OA chondrocytes. Piperine inhibited the IL-1β-mediated activation of NF-κB by suppressing the degradation of its inhibitory protein IκBα in the cytoplasm. The present report is first to demonstrate the anti-inflammatory activity of piperine in human OA chondrocytes. Piperine can effectively abrogate the IL-1β-induced over-expression of inflammatory mediators; suggesting that piperine may be a potential agent in the treatment of OA.
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Affiliation(s)
- Xiaozhou Ying
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, China
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20
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Zhang L, Zhang J, Yang L, Dong Y, Zhang Y, Xie Z. Isoflurane and sevoflurane increase interleukin-6 levels through the nuclear factor-kappa B pathway in neuroglioma cells. Br J Anaesth 2013; 110 Suppl 1:i82-91. [PMID: 23604542 DOI: 10.1093/bja/aet115] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Isoflurane can increase pro-inflammatory cytokine interleukin (IL)-6 levels. However, the up-stream mechanism remains unknown. Nuclear factor-kappa B (NF-κB) promotes the generation of pro-inflammatory cytokines. We examined the effects of isoflurane and sevoflurane on the NF-κB signalling pathway and its association with IL-6 levels in cultured cells. METHODS H4 human neuroglioma cells (H4 cells), and mouse primary neurones and microglia were treated with 2% isoflurane or 4.1% sevoflurane for 6 h, for analysis of IL-6 and NF-κB. Pyrrolidine dithiocarbamate (an NF-κB inhibitor) or 2-deoxy-d-glucose (2-DG) (an inhibitor of glucose glycolysis) was applied 1 h before anaesthetic treatment. RESULTS Isoflurane or sevoflurane treatment increased the levels of IL-6 [isoflurane: 410% (54); sevoflurane: 290% (24)], the nuclear levels of NF-κB [isoflurane: 170% (36); sevoflurane: 320% (30)], and the transcription activity of NF-κB in H4 cells. Moreover, isoflurane enhanced the transcription activity of NF-κB in mouse microglia, but not primary neurones. Finally, pyrrolidine dithiocarbamate and 2-DG attenuated isoflurane-induced increases in IL-6 and NF-κB, and the transcription activity of NF-κB. CONCLUSIONS These studies in H4 cells suggest that the NF-κB signalling pathway could contribute to isoflurane or sevoflurane-induced neuroinflammation. This could lead to the targeted intervention of anaesthetic-induced neuroinflammation.
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Affiliation(s)
- L Zhang
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129-2060, USA
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Ha MK, Song YH, Jeong SJ, Lee HJ, Jung JH, Kim B, Song HS, Huh JE, Kim SH. Emodin inhibits proinflammatory responses and inactivates histone deacetylase 1 in hypoxic rheumatoid synoviocytes. Biol Pharm Bull 2011; 34:1432-7. [PMID: 21881229 DOI: 10.1248/bpb.34.1432] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic inflammation of rheumatoid arthritis (RA) is promoted by proinflammatory cytokines and closely linked to angiogenesis. In the present study, we investigated the anti-inflammatory effects of emodin (1,3,8-trihydroxy-6-methyl-anthraquinone) isolated from the root of Rheum palmatum L. in interleukin 1 beta (IL-1β) and lipopolysaccharide (LPS)-stimulated RA synoviocytes under hypoxia. Emodin significantly inhibited IL-1β and LPS-stimulated proliferation of RA synoviocytes in a dose-dependent manner under hypoxic condition. Also, enzyme linked immunosorbent assay (ELISA) revealed that emodin significantly reduced the production of pro-inflammatory cytokines [tumor necrosis factor-alpha (TNF-α), IL-6 and IL-8], mediators [prostagladin E(2) (PGE(2)), matrix metalloproteinase (MMP)-1 and MMP-13] and vascular endothelial growth factor (VEGF) as an angiogenesis biomarker in IL-1β and LPS-treated synoviocytes under hypoxia. Consistently, emodin attenuated the expression of cyclooxygenase 2 (COX-2), VEGF, hypoxia inducible factor 1 alpha (HIF-1α), MMP-1 and MMP-13 at mRNA level in IL-1β and LPS-treated synoviocytes under hypoxia. Furthermore, emodin reduced histone deacetylase (HDAC) activity as well as suppressed the expression of HDAC1, but not HDAC2 in IL-1β and LPS-treated synoviocytes under hypoxia. Overall, these findings suggest that emodin inhibits proinflammatory cytokines and VEGF productions, and HDAC1 activity in hypoxic RA synoviocytes.
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Affiliation(s)
- Mi-Kyoung Ha
- Graduate School of East-West Medical Science, Kyung Hee University, Korea
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Polyoxypregnane glycoside from Dregea volubilis extract inhibits IL-1β-induced expression of matrix metalloproteinase via activation of NF-κB in human chondrocytes. In Vitro Cell Dev Biol Anim 2011; 48:43-53. [DOI: 10.1007/s11626-011-9475-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Accepted: 11/14/2011] [Indexed: 01/27/2023]
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Lee YA, Choi HM, Lee SH, Hong SJ, Yang HI, Yoo MC, Kim KS. Hypoxia differentially affects IL-1β-stimulated MMP-1 and MMP-13 expression of fibroblast-like synoviocytes in an HIF-1α-dependent manner. Rheumatology (Oxford) 2011; 51:443-50. [PMID: 22123992 DOI: 10.1093/rheumatology/ker327] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVES To further understand the expression regulation of MMP-1 and MMP-13 under physiological and pathological conditions, we investigated the combined effects of hypoxia and pro-inflammatory stimuli on the expression of MMP-1 and MMP-13 in rheumatoid synovial fibroblasts. METHODS Synovial fibroblasts were cultured under either hypoxic or normoxic conditions in the presence of IL-1β stimulation. The culture supernatant was analysed for secreted levels of VEGF, MMP-1 and MMP-13. Their gene expression was quantified with real-time and semi-quantitative PCR. Another group of cells was transfected with small-interfering RNA (siRNA) specific for hypoxia-inducible factor-1 α (HIF-1α). The protein levels of HIF-1α were detected by western blot analysis. RESULTS In response to 10 ng/ml of IL-1β under normoxia, the levels of MMP-1 and MMP-13 increased compared with the levels observed under hypoxia. IL-1β stimulation under hypoxia induced a 2-fold increase in the level of MMP-1 and a 2-fold decrease in the level of MMP-13 compared with cells cultured under normoxia. A similar pattern of differential expression for MMP-1 and MMP-13 was observed with 1 and 5 ng/ml IL-1β, but not at 0.1 ng/ml. The differential expression of MMPs under the combined effect of IL-1β and hypoxia was significantly attenuated by silencing HIF-1α with siRNA. CONCLUSIONS Hypoxia in arthritic joints may differentially affect the IL-1β-stimulated expression of MMP-1 and MMP-13 in rheumatoid synovial fibroblasts. This effect is dependent on HIF-1α expression. This hypoxia-mediated differential effect should be taken into consideration when testing the efficiency of therapies that target HIF-1α.
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Affiliation(s)
- Yeon-Ah Lee
- Kyung Hee University, Gangdong-gu, Seoul, Korea
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Fetal bovine serum requirement for pyrrolidine dithiocarbamate-induced apoptotic cell death of MCF-7 breast tumor cells. Eur J Pharmacol 2010; 649:135-9. [DOI: 10.1016/j.ejphar.2010.09.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 09/16/2010] [Indexed: 12/18/2022]
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Adiponectin may contribute to synovitis and joint destruction in rheumatoid arthritis by stimulating vascular endothelial growth factor, matrix metalloproteinase-1, and matrix metalloproteinase-13 expression in fibroblast-like synoviocytes more than proinflammatory mediators. Arthritis Res Ther 2009; 11:R161. [PMID: 19883500 PMCID: PMC3003518 DOI: 10.1186/ar2844] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 09/30/2009] [Accepted: 11/02/2009] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION The role of adiponectin in the pathogenesis of arthritis is still controversial. This study was performed to examine whether adiponectin is involved in joint inflammation and destruction in rheumatoid arthritis (RA) in relation to the expression of vascular endothelial growth factor (VEGF) and matrix metalloproteinases (MMPs). METHODS Synovial cells from RA patients were treated with adiponectin or interleukin (IL)-1beta for 24 hours. The culture supernatant was collected and analyzed for the levels of IL-6, IL-8, prostaglandin E2 (PGE2), VEGF, and MMPs by enzyme-linked immunosorbent assay. The levels of adiponectin, VEGF, MMP-1, and MMP-13 in the joint fluids from 30 RA or osteoarthritis (OA) patients were also measured. RESULTS Adiponectin at the concentration of 10 microg/mL stimulated the production of IL-6, IL-8, and PGE2 in RA fibroblast-like synoviocytes (FLSs), although the level of these was much lower than with 1 ng/mL IL-1beta. However, adiponectin stimulated the production of VEGF, MMP-1, and MMP-13 at the same level as IL-1beta. In addition, the level of adiponectin and MMP-1 in the joint fluid of RA patients was significantly higher than in OA patients. Adiponectin was positively correlated with VEGF in RA patients but not in OA patients, while the level of MMPs in joint fluid was not correlated with adiponectin in either RA or OA patients. CONCLUSIONS Adiponectin may play a significant role in the pathogenesis of RA by stimulating the production of VEGF and MMPs in FLSs, leading to joint inflammation and destruction, respectively.
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