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Schmidt KE, Höving AL, Nowak K, an Mey N, Kiani Zahrani S, Nemeita B, Riedel L, Majewski A, Kaltschmidt B, Knabbe C, Kaltschmidt C. Serum Induces the Subunit-Specific Activation of NF-κB in Proliferating Human Cardiac Stem Cells. Int J Mol Sci 2024; 25:3593. [PMID: 38612406 PMCID: PMC11012129 DOI: 10.3390/ijms25073593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024] Open
Abstract
Cardiovascular diseases (CVDs) are often linked to ageing and are the major cause of death worldwide. The declined proliferation of adult stem cells in the heart often impedes its regenerative potential. Thus, an investigation of the proliferative potential of adult human cardiac stem cells (hCSCs) might be of great interest for improving cell-based treatments of cardiovascular diseases. The application of human blood serum was already shown to enhance hCSC proliferation and reduce senescence. Here, the underlying signalling pathways of serum-mediated hCSC proliferation were studied. We are the first to demonstrate the involvement of the transcription factor NF-κB in the serum-mediated proliferative response of hCSCs by utilizing the NF-κB inhibitor pyrrolidine dithiocarbamate (PDTC). RNA-Sequencing (RNA-Seq) revealed ATF6B, COX5B, and TNFRSF14 as potential targets of NF-κB that are involved in serum-induced hCSC proliferation.
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Affiliation(s)
- Kazuko E. Schmidt
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes Centre NRW, Ruhr-University Bochum, 32545 Bad Oeynhausen, Germany;
- Medical Faculty Ostwestfalen-Lippe, University of Bielefeld, 33615 Bielefeld, Germany
| | - Anna L. Höving
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes Centre NRW, Ruhr-University Bochum, 32545 Bad Oeynhausen, Germany;
- Medical Faculty Ostwestfalen-Lippe, University of Bielefeld, 33615 Bielefeld, Germany
| | - Katja Nowak
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes Centre NRW, Ruhr-University Bochum, 32545 Bad Oeynhausen, Germany;
- Medical Faculty Ostwestfalen-Lippe, University of Bielefeld, 33615 Bielefeld, Germany
| | - Nike an Mey
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
| | - Sina Kiani Zahrani
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
| | - Britta Nemeita
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
| | - Lena Riedel
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
| | - Agnes Majewski
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
| | - Barbara Kaltschmidt
- AG Molecular Neurobiology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany;
| | - Cornelius Knabbe
- Institute for Laboratory and Transfusion Medicine, Heart and Diabetes Centre NRW, Ruhr-University Bochum, 32545 Bad Oeynhausen, Germany;
- Medical Faculty Ostwestfalen-Lippe, University of Bielefeld, 33615 Bielefeld, Germany
| | - Christian Kaltschmidt
- Department of Cell Biology, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany (N.a.M.); (S.K.Z.); (B.N.)
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Shin JH, Kim SS, Seo SR. Pyrrolidine Dithiocarbamate Suppresses Cutibacterium acnes-Induced Skin Inflammation. Int J Mol Sci 2023; 24:ijms24054444. [PMID: 36901873 PMCID: PMC10003320 DOI: 10.3390/ijms24054444] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023] Open
Abstract
Cutibacterium acnes (C. acnes), a Gram-positive anaerobic bacterium, proliferates in hair follicles and pores and causes inflammation in the skin of young people. The rapid growth of C. acnes triggers macrophages to secrete proinflammatory cytokines. Pyrrolidine dithiocarbamate (PDTC) is a thiol compound that exerts antioxidant and anti-inflammatory effects. Although the anti-inflammatory function of PDTC in several inflammatory disorders has been reported, the effect of PDTC on C. acnes-induced skin inflammation remains unexplored. In the present study, we examined the effect of PDTC on C. acnes-induced inflammatory responses and determined the mechanism by using in vitro and in vivo experimental models. We found that PDTC significantly inhibited the expression of C. acnes-induced proinflammatory mediators, such as interleukin-1β (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), and NOD-like receptor (NLR) pyrin domain-containing 3 (NLRP3), in mouse-bone-marrow-derived macrophage (BMDM) cells. PDTC suppressed C. acnes-induced activation of nuclear factor-kappa B (NF-κB), which is the major transcription factor for proinflammatory cytokine expression. In addition, we found that PDTC inhibited caspase-1 activation and IL-1β secretion through suppressing NLRP3 and activated the melanoma 2 (AIM2) inflammasome but not the NLR CARD-containing 4 (NLRC4) inflammasome. Moreover, we found that PDTC improved C. acnes-induced inflammation by attenuating C. acnes-induced IL-1β secretion in a mouse acne model. Therefore, our results suggest that PDTC has potential therapeutic value for the amelioration of C. acnes-induced skin inflammation.
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Affiliation(s)
- Jin Hak Shin
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seon Sook Kim
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, Republic of Korea
- Institute of Life Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Su Ryeon Seo
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon 24341, Republic of Korea
- Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
- Correspondence: ; Tel.: +82-33-250-8541; Fax: +82-33-241-4627
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Huang Y, Wang S, Fan J, Pan J, Zhou Q, Xu J, Wang J, Zhang T, Yan Z. New insights into the mechanism of ammonia toxicity: Focus on Cactus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114357. [PMID: 36508831 DOI: 10.1016/j.ecoenv.2022.114357] [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: 10/01/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
The NF-κB signaling pathway is the most critical pathway in innate immunity. IκB (Cactus) is the primary cytoplasmic inhibitor of NF-κB (Dorsal). In this study, we found that ammonia exposure could significantly induce the expression of Cactus, in a dose-dependent manner in different tissues, with the highest expression in the gill of Corbicula fluminea. The expression pattern-related elements (Tube and Dorsal) in the NF-κB signaling pathway were also analyzed, showing significant up-regulation in 48 h. There was an inhibitory effect between up-regulated Cactus and Dorsal in 72 h, which may regulate Dorsal as a negative feedback pathway function to control the expression of pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α). Besides, through molecular docking simulation, we found that the Cactus could be directly activated by NH3, complementing the regulatory mechanism of the Cactus. To further test our hypothesis, the levels of pro-inflammatory cytokines decreased after adding PDTC (the antioxidant of Cactus/IκB), suggesting that PDTC can prevent the degradation of Cactus, inhibit Dorsal translocating into the nucleus, and activate the pro-inflammatory cytokines. This revealed the inhibitory effect of Cactus on activating Dorsal/NF-κB factors in the NF-κB signaling pathway. Thus, we suggested that the Cactus is an essential regulator of ammonia-activated inflammation in C. fluminea, which was reported to be activated only by bacteria and immune stimulators. Our study provides a new perspective on the mechanism of ammonia toxicity in invertebrates.
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Affiliation(s)
- Yi Huang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao 266100, PR China; Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China (College of Environmental Science and Engineering), Qingdao 266100, PR China
| | - Shuping Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Juntao Fan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Jinfen Pan
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China (College of Environmental Science and Engineering), Qingdao 266100, PR China
| | - Quan Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Jiayun Xu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Jie Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Tianxu Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| | - Zhenguang Yan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
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Raheem S, Khan R, Pan X, Ullah R, Ahsan Halim S, Khan A, Al-Harrasi A. One pot domino synthesis of new 3,5-disubstituted-tetrahydro-2H-1,3,5-thiadiazine-2-thiones (THTTs) as anti-inflammatory and antinociceptive candidates: A proof from in-vivo to in-vitro and in-silico mechanistic studies. Bioorg Chem 2022; 127:105974. [DOI: 10.1016/j.bioorg.2022.105974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/06/2022] [Accepted: 06/14/2022] [Indexed: 11/29/2022]
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Guo L, Wang Z, Li J, Cui L, Dong J, Meng X, Zhu G, Li J, Wang H. MCC950 attenuates inflammation-mediated damage in canines with Staphylococcus pseudintermedius keratitis by inhibiting the NLRP3 inflammasome. Int Immunopharmacol 2022; 108:108857. [PMID: 35597123 DOI: 10.1016/j.intimp.2022.108857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND Bacterial keratitis is a common eye disease in dogs and can seriously affect vision. This study investigated the anti-inflammatory effect of MCC950 in the cornea of canines infected with Staphylococcus pseudintermedius (S. pseudintermedius). METHODS In vitro, canine cornea epithelial cells were pretreated with MCC950 and PDTC and then infected with S. pseudintermedius. The key proteins of the NF-κB pathway and NLRP3 inflammasome were detected by Western blotting, the levels of inflammatory factors were detected by qPCR, and the levels of MDA and LDH were detected by assay kit. In vivo, the canine keratitis model was established by injecting S. pseudintermedius into the corneal stroma layer. After treatment with MCC950, slit-lamp examinations were performed. Cornea tissue protein and RNA were extracted, and Western blotting was used to detect key proteins of the NF-κB pathway and NLRP3 inflammasome. qPCR was used to detect the inflammatory factors. Paraffin sections of corneal tissue were prepared for HE staining and immunohistochemical staining. RESULTS After MCC950 treatment, the expression levels of key proteins in the NF-κB pathway and NLRP3 inflammasome in canine cornea epithelial cells and corneal tissues were decreased, and the expression levels of IL-1β, IL-6, IL-8, IL-18 and TNF-α were reduced. Cellular MDA and LDH levels were decreased. In vivo, the degree of corneal opacity, edema, neovascularization and corneal injury area decreased after MCC950 treatment. Canine corneal sections showed that MCC950 attenuated neutrophil infiltration. CONCLUSION MCC950 alleviates the inflammatory response to canine keratitis caused by S. pseudintermedius by inhibiting the activation of the NLRP3 inflammasome.
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Affiliation(s)
- Long Guo
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Zhihao Wang
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Jun Li
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Luying Cui
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Junsheng Dong
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Xia Meng
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Jianji Li
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
| | - Heng Wang
- College of Veterinary Medicine, Yangzhou University, Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, China; Joint International Research Laboratory of Agriculture and Agri-product Safety of the Ministry of Education, Yangzhou, Jiangsu 225009, China.
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Wu Y, Liu L, Lv S, Wang Y, Wang S, Wang S, Zhang J, Wang J. Pyrrolidine Dithiocarbamate Might Mitigate Radiation-Induced Heart Damage at an Early Stage in Rats. Front Pharmacol 2022; 13:832045. [PMID: 35392554 PMCID: PMC8981468 DOI: 10.3389/fphar.2022.832045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: Radiation-induced heart damage (RIHD) is becoming an increasing concern due to offsetting clinical benefits of radiotherapy to a certain extent. Pyrrolidine dithiocarbamate (PDTC) as an antioxidant has been implicated in cardioprotective effects. We aimed to investigate whether pyrrolidine dithiocarbamate could attenuate heart damage at an early stage post-irradiation and unveil the potential mechanisms. Methods: A total of 15 adult male Sprague-Dawley rats were randomized into the control, irradiation (IR), and PDTC plus irradiation (PDTC + IR) groups. Hearts were irradiated with a single fraction of 20.0 Gy. Rats received daily intraperitoneal injection of PDTC for 14 days. At the 14th day post-irradiation, echocardiography was performed, and rats were killed. Morphological damage was examined by hematoxylin-eosin (HE) stain and Masson's trichrome stain. The collagen volume fraction (CVF) was applied for semi-quantitative analysis. The protein levels were analyzed by Western blot and mRNA levels by quantitative real-time PCR. Results: No significant damage to systolic function of left ventricular was induced at an early stage post-irradiation. HE staining of cardiac tissue showed that the disordered arrangement of myocardial cells and abnormal cell infiltration were alleviated in the PDTC + IR group. The increased CVF in the irradiation group was inhibited in the PDTC + IR group (22.05 ± 2.64% vs. 9.99 ± 1.65%, p < 0.05). The protein levels of nuclear factor-kappa B (NF-κB), hypoxia-inducible factor-1α (HIF-1α), and COL-1 were downregulated after treatment with PDTC (p < 0.05), and there was a declining trend in the protein of the connective tissue growth factor (CTGF). The mRNA expression of NF-κB and HIF-1α in the PDTC plus irradiation group was lower than that in the irradiation group (p < 0.05), and there was a declining trend in the mRNA expression of the connective tissue growth factor and COL-1. Conclusion: PDTC alleviates myocardial cell disordered arrangement, abnormal cell infiltration, and pro-fibrotic change at an early stage in rats with radiation-induced heart damage. Such a protective effect is closely associated with the downregulation of NF-κB.
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Affiliation(s)
- Yajing Wu
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lina Liu
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shengliang Lv
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yi Wang
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shuai Wang
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Sheng Wang
- Hebei Key Laboratory of Neurophysiology, Shijiazhuang, China
| | - Jiandong Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Jun Wang
- Department of Radiation Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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The Versatility in the Applications of Dithiocarbamates. Int J Mol Sci 2022; 23:ijms23031317. [PMID: 35163241 PMCID: PMC8836150 DOI: 10.3390/ijms23031317] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/08/2022] [Accepted: 01/18/2022] [Indexed: 02/07/2023] Open
Abstract
Dithiocarbamate ligands have the ability to form stable complexes with transition metals, and this chelating ability has been utilized in numerous applications. The complexes have also been used to synthesize other useful compounds. Here, the up-to-date applications of dithiocarbamate ligands and complexes are extensively discussed. Some of these are their use as enzyme inhibitor and treatment of HIV and other diseases. The application as anticancer, antimicrobial, medical imaging and anti-inflammatory agents is examined. Moreover, the application in the industry as vulcanization accelerator, froth flotation collector, antifouling, coatings, lubricant additives and sensors is discussed. The various ways in which they have been employed in synthesis of other compounds are highlighted. Finally, the agricultural uses and remediation of heavy metals via dithiocarbamate compounds are comprehensively discussed.
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Naveed M, Ullah R, Khan A, Shal B, Khan AU, Khan SZ, Rehman ZU, Khan S. Anti-neuropathic pain activity of a cationic palladium (II) dithiocarbamate by suppressing the inflammatory mediators in paclitaxel-induced neuropathic pain model. Mol Biol Rep 2021; 48:7647-7656. [PMID: 34734371 DOI: 10.1007/s11033-021-06754-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 09/10/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Neuropathic pain is a chronic pain state that negatively impacts the quality of life. Currently, available therapies for the treatment of neuropathic pain often lack efficacy and tolerability. Therefore, the search for novel drugs is crucial to obtain treatments that effectively suppress neuropathic pain. OBJECTIVES The present study was undertaken to investigate the antinociceptive properties of (1,4-bis-(diphenylphosphino) butane) palladium (II) chloride monohydrate (Compound 1) in a paclitaxel (PTX)-induced neuropathic pain model. METHODS Initially, behavioral tests such as mechanical and cold allodynia as well as thermal and tail immersion hyperalgesia were performed to investigate the antinociceptive potential of Compound 1 (5 and 10 mg/kg, b.w). RT-PCR was performed to determine the effect of Compound 1 on the mRNA expression level of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and proinflammatory cytokines such as tumor necrosis factor-alpha (TNF)-α, interleukin (IL)-1β, and IL-6. In addition, antioxidant protein, nitric oxide (NO), and malondialdehyde (MDA) levels were also determined. RESULTS The results demonstrated that once-daily dosing of Compound 1 significantly suppressed the PTX-induced behavioral pain responses dose-dependently. The mRNA gene expressions of iNOS, COX-2, and inflammatory cytokines were markedly reduced by Compound 1. Furthermore, it enhanced the level of antioxidant enzymes and lowered the level of MDA and NO production. CONCLUSION These findings suggest that the antinociceptive potential of Compound 1 in the PTX-induced neuropathic pain model is via suppression of oxidative stress and inflammation. Thus, Compound 1 might be a potential candidate for the therapeutic management of PTX induced neuropathic pain.
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Affiliation(s)
- Muhammad Naveed
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged, Szeged, Hungary
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Rahim Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Adnan Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Bushra Shal
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Ashraf Ullah Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Shahan Zeb Khan
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan
- Department of Chemistry, University of Science and Technology, KPK, Bannu, 28100, Pakistan
| | - Zia Ur Rehman
- Department of Chemistry, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
| | - Salman Khan
- Pharmacological Sciences Research Lab, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan.
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Srinivasarao DA, Sreenivasa Reddy S, Bhanuprakash Reddy G, Katti DS. Simultaneous amelioration of diabetic ocular complications in lens and retinal tissues using a non-invasive drug delivery system. Int J Pharm 2021; 608:121045. [PMID: 34481006 DOI: 10.1016/j.ijpharm.2021.121045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 10/20/2022]
Abstract
Topically administered delivery systems for ophthalmic applications have been studied for the treatment of anterior or posterior eye diseases. However, simultaneous treatment of both anterior and posterior eye diseases has not been explored. In this study, we fabricated a topically administrable polymeric nanoparticle (NP)- based delivery system consisting of pluronic®F-68 shell and polycaprolactone core for the simultaneous treatment of both anterior and posterior eye diseases. These NPs were loaded with pyrrolidine dithiocarbamate (PDTC) or triamcinolone acetonide (TA) separately. The drug loading in NPs was optimized to initially achieve a moderate burst release of PDTC followed by slow and sustained release of both PDTC and TA. The resultant delivery system was studied for its in vivo efficacy in a diabetic retinopathy (DR) and cataract rat model. The results demonstrated that administration of PDTC NPs + TA NPs minimized oxidative stress in lens as evidenced by reduced levels of protein carbonyls and malondialdehyde, and, ameliorated DR complications in retina as evidenced by reduced expression of hypoxia inducible factor-1α along with a reduction in number of neovascular tufts and acellular capillaries. Therefore, delivery of PDTC and TA using PCL-PF68 NPs could be a useful approach for simultaneous treatment of diabetic cataract and DR.
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Affiliation(s)
- Dadi A Srinivasarao
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; The Mehta Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - S Sreenivasa Reddy
- Biochemistry Division, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad 500007, India
| | - G Bhanuprakash Reddy
- Biochemistry Division, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad 500007, India
| | - Dhirendra S Katti
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; The Mehta Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, India.
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Microenvironmental innate immune signaling and cell mechanical responses promote tumor growth. Dev Cell 2021; 56:1884-1899.e5. [PMID: 34197724 DOI: 10.1016/j.devcel.2021.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 05/01/2021] [Accepted: 06/09/2021] [Indexed: 01/08/2023]
Abstract
Tissue homeostasis is achieved by balancing stem cell maintenance, cell proliferation and differentiation, as well as the purging of damaged cells. Elimination of unfit cells maintains tissue health; however, the underlying mechanisms driving competitive growth when homeostasis fails, for example, during tumorigenesis, remain largely unresolved. Here, using a Drosophila intestinal model, we find that tumor cells outcompete nearby enterocytes (ECs) by influencing cell adhesion and contractility. This process relies on activating the immune-responsive Relish/NF-κB pathway to induce EC delamination and requires a JNK-dependent transcriptional upregulation of the peptidoglycan recognition protein PGRP-LA. Consequently, in organisms with impaired PGRP-LA function, tumor growth is delayed and lifespan extended. Our study identifies a non-cell-autonomous role for a JNK/PGRP-LA/Relish signaling axis in mediating death of neighboring normal cells to facilitate tumor growth. We propose that intestinal tumors "hijack" innate immune signaling to eliminate enterocytes in order to support their own growth.
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Schmitt A, Brändle AL, Herzog P, Röchner F, Fragasso A, Munz B. Effects of the anti-oxidant PDTC in combination with a single bout of treadmill running on murine skeletal muscle. Redox Rep 2021; 25:70-79. [PMID: 32808587 PMCID: PMC7480603 DOI: 10.1080/13510002.2020.1807088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Objectives: Skeletal muscle adaptation to physical activity is dependent on various factors. Important signaling mediators are reactive oxygen species (ROS). However, recent research suggests that ROS have both beneficial and deleterious effects on exercise adaptation, dependent on training intensity and training status, so that the question of whether anti-oxidants should be taken in connection with exercise cannot easily be answered. Thus, it is important to gain more insight into the complex roles of ROS in regulating training adaptation. Methods: The effects of ROS inhibition on skeletal muscle training adaptation were analyzed by applying the anti-oxidant PDTC, which is also an inhibitor of the ROS-activated transcription factor nuclear factor kappa B (NFκB), to juvenile mice in connection with a single bout of treadmill running. Results: We found that PDTC inhibits exercise-mediated induction of specific stress- and inflammation-associated genes. Other genes, specifically those encoding metabolic and mitochondrial factors, were affected to a lesser extent and there appeared to be little effect on the microRNA (miR) profile. Discussion: Our data suggest that anti-oxidants regulate distinct sets of adaptation-relevant genes, which might have important implications for the design of exercise-based preventive and therapeutic approaches.
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Affiliation(s)
- Angelika Schmitt
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany
| | - Anne-Lena Brändle
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany
| | - Pascal Herzog
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany
| | - Franziska Röchner
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany
| | - Annunziata Fragasso
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany
| | - Barbara Munz
- Department of Sports Medicine, University Hospital Tübingen, Medical Clinic, Tübingen, Germany.,Interfaculty Research Institute for Sport and Physical Activity, Eberhard Karls University of Tübingen, Tübingen, Germany
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12
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Farooq S, Haq IU, Ullah N. Synthesis, characterization and biological evaluation of N-Mannich base derivatives of 2-phenyl-2-imidazoline as potential antioxidants, enzyme inhibitors, antimicrobials, cytotoxic and anti-inflammatory agents. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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13
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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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14
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Wang Z, Yang J, Yang Y, Pu X, Zhao J, Zhang N. Targeted and Combined TPCA-1-Gold Nanocage Therapy for In Vivo Treatment of Inflammatory Arthritis. AAPS PharmSciTech 2020; 21:298. [PMID: 33140225 DOI: 10.1208/s12249-020-01856-0] [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: 08/25/2020] [Accepted: 10/16/2020] [Indexed: 12/22/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease that is currently incurable. Inhibition of inflammation can prevent the deterioration of RA. 2-[(Aminocarbonyl)amino]-5-(4-fluorophenyl)-3-thiophenecarboxamide (TPCA-1) suppresses inflammation via the inhibition of nuclear factor-κ (NF-κB) signaling pathway. Gold-based therapies have been used to treat inflammatory arthritis since the 1940s. Hyaluronic acid (HA) is a targeting ligand for CD44 receptors overexpressed on activated macrophages. Therefore, a combined therapy based on TPCA-1, gold, and HA was explored for the treatment of RA in this study. We used gold nanocages (AuNCs) to load TPCA-1 and modified the TPCA-1 (T) loaded AuNCs with HA and peptides (P) to construct an anti-inflammatory nanoparticle (HA-AuNCs/T/P). An adjuvant-induced arthritis (AIA) mice model was used to investigate the in vivo anti-inflammatory efficacy of HA-AuNCs/T/P. In vivo distribution results showed that HA-AuNCs/T/P had increased and prolonged accumulation at the inflamed paws of AIA mice. Treatment by the HA-AuNCs/T/P suppressed joint swelling and alleviated cartilage and bone damage. By loading to HA-AuNCs/T/P, the effective concentration of TPCA-1 was greatly reduced from 20 to 0.016 mg/kg mice. This study demonstrated that HA-AuNCs/T/P could effectively suppress inflammation and alleviate the symptoms of AIA mice, suggesting a great potential of HA-AuNCs/T/P for the treatment of RA.
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15
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Wang X, Zhou J, Yang J, Wang S, Yang L. Role of TLR4/MyD88/NF-κB signaling in the contrast-induced injury of renal tubular epithelial cells. Exp Ther Med 2020; 20:115. [PMID: 33005241 DOI: 10.3892/etm.2020.9243] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/29/2020] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to explore the role of toll-like receptor 4 (TLR4)/myeloid differentiation primary response 88 (MyD88)/nuclear factor (NF)-κB signaling in the contrast-induced injury of renal tubular epithelial cells, and to investigate the potential mechanisms. HK-2 cells cultured in vitro were randomly divided into six groups as follows: i) The blank group; ii) the iohexol group; iii) the NF-κB RNAi group (NF-κB siRNA + iohexol); iv) the TLR4 RNAi group (TLR4 siRNA + iohexol); v) the NF-κB blocker group (PDTC + iohexol); and vi) the TLR4 blocker group (CLI-095 + iohexol). The expression of the TLR4/MyD88/NF-κB signaling pathway proteins was detected by reverse transcription-quantitative (RT-q)PCR and western blot analysis, and the cellular proliferation rate was determined using the Cell Counting Kit-8 assay. The mRNA expression levels of the inflammatory cytokines tumor necrosis factor (TNF)-α, interleukin (IL)-1β and IL-6 were also detected using RT-qPCR, and apoptosis was assessed by flow cytometry and western blotting to detect apoptosis-associated proteins (caspase-3, caspase-9 and cleaved caspase-9). Compared with the blank group, the apoptotic rates and the expression levels of TLR4, MyD88, NF-κB, caspase-3, cleaved caspase-9, TNF-α, IL-1β and IL-6 were upregulated in the iohexol group (P<0.001). However, when TLR4 or NF-κB were blocked or silenced, these effects were reversed (P<0.001). Collectively, the results of the present study indicated that TLR4/MyD88/NF-κB signaling is involved in the contrast-induced injury of renal tubular epithelial cells by inducing inflammation and apoptosis.
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Affiliation(s)
- Xin Wang
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jiaojiao Zhou
- Division of Ultrasound, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jia Yang
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Siwen Wang
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Lichuan Yang
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Oliveira KC, Zambom FFF, Albino AH, Alarcon Arias SC, Ávila VF, Faustino VD, Malheiros DMAC, Camara NOS, Fujihara CK, Zatz R. NF-κB blockade during short-term l-NAME and salt overload strongly attenuates the late development of chronic kidney disease. Am J Physiol Renal Physiol 2020; 319:F215-F228. [PMID: 32463727 DOI: 10.1152/ajprenal.00495.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Nitric oxide synthase inhibition by Nω-nitro-l-arginine methyl ester (l-NAME) plus a high-salt diet (HS) is a model of chronic kidney disease (CKD) characterized by marked hypertension and renal injury. With cessation of treatment, most of these changes subside, but progressive renal injury develops, associated with persistent low-grade renal inflammation. We investigated whether innate immunity, and in particular the NF-κB system, is involved in this process. Male Munich-Wistar rats received HS + l-NAME (32 mg·kg-1·day-1), whereas control rats received HS only. Treatment was ceased after week 4 when 30 rats were studied. Additional rats were studied at week 8 (n = 30) and week 28 (n = 30). As expected, HS + l-NAME promoted severe hypertension, albuminuria, and renal injury after 4 wk of treatment, whereas innate immunity activation was evident. After discontinuation of treatments, partial regression of renal injury and inflammation occurred, along with persistence of innate immunity activation at week 8. At week 28, glomerular injury worsened, while renal inflammation persisted and renal innate immunity remained activated. Temporary administration of the NF-κB inhibitor pyrrolidine dithiocarbamate, in concomitancy with the early 4-wk HS + l-NAME treatment, prevented the development of late renal injury and inflammation, an effect that lasted until the end of the study. Early activation of innate immunity may be crucial to the initiation of renal injury in the HS + l-NAME model and to the autonomous progression of chronic nephropathy even after cessation of the original insult. This behavior may be common to other conditions leading to CKD.
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Affiliation(s)
- Karin Carneiro Oliveira
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Amanda Helen Albino
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Simone Costa Alarcon Arias
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Victor Ferreira Ávila
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Viviane Dias Faustino
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Niels Olsen Saraiva Camara
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.,Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Clarice Kazue Fujihara
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Roberto Zatz
- Renal Division, Department of Clinical Medicine, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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Ethyl-p-methoxycinnamate enhances oct4 expression and reinforces pluripotency through the NF-κB signaling pathway. Biochem Pharmacol 2020; 177:113984. [PMID: 32311348 DOI: 10.1016/j.bcp.2020.113984] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 04/15/2020] [Indexed: 12/13/2022]
Abstract
Pluripotent stem cells are have therapeutic applications in regenerative medicine and drug discovery. However, the differentiation of stem cells in vitro hinders their large-scale production and clinical applications. The maintenance of cell pluripotency relies on a complex network of transcription factors; of these, octamer-binding transcription factor-4 (Oct4) plays a key role. This study aimed to construct an Oct4 gene promoter-driven firefly luciferase reporter and screen small-molecule compounds could maintain cell self-renewal and pluripotency. The results showed that ethyl-p-methoxycinnamate (EPMC) enhance the promoter activity of the Oct4 gene, increased the expression of Oct4 at both mRNA and protein levels, and significantly promoted the colony formation of P19 cells. These findings suggesting that EPMC could reinforce the self-renewal capacity of P19 cells. The pluripotency markers Oct4, SRY-related high-mobility-group-box protein-2, and Nanog were expressed at higher levels in EPMC-induced colonies. EPMC could promote teratoma formation and differentiation potential of P19 cells in vivo. It also enhanced self-renewal and pluripotency of human umbilical cord mesenchymal stem cells and mouse embryonic stem cells. Moreover, it significantly activated the nuclear factor kappa B (NF-κB) signaling pathway via the myeloid differentiation factor 88-dependent pathway. The expression level of Oct4 decreased after blocking the NF-κB signaling pathway, suggesting that EPMC promoted the expression of Oct4 partially through the NF-κB signaling pathway. This study indicated that EPMC could maintain self-renewal and pluripotency of stem cells.
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Naveed M, Khan SZ, Zeeshan S, Khan A, Shal B, Atiq A, Ali H, Ullah R, Zia-Ur-Rehman, Khan S. A new cationic palladium(II) dithiocarbamate exhibits anti-inflammatory, analgesic, and antipyretic activities through inhibition of inflammatory mediators in in vivo models. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2019; 392:961-977. [PMID: 30968231 DOI: 10.1007/s00210-019-01645-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/12/2019] [Indexed: 12/13/2022]
Abstract
Inflammation is being a protective mechanism of the body towards the injury. However, chronic and progressive inflammation may lead to some chronic diseases. Due to the serious unwanted effects associated with available drugs, new and safe anti-inflammatory agents are still required. Therefore, the present study was designed to investigate the anti-inflammatory, analgesics, and antipyretic properties of a new compound (4-benzylpiperidine-1-carbodithioato-κ2S,S')(1,4-bis-(diphenylphosphino)butane)palladium(II)chloride monohydrate (compound-1) in albino mice models. Compound-1 was characterized by elemental analysis, FT-IR, and multinuclear NMR spectroscopy. Initially, compound-1 was evaluated for cytotoxicity, anti-inflammatory, and analgesic activities by performing MTT assay, carrageenan-, histamine-, serotonin-, and CFA-induced paw edema, mechanical hyperalgesia, thermal hyperalgesia, and mechanical allodynia (0.1, 1, and 10 mg/kg, b.w). Antipyretic activity was evaluated in brewer's yeast-induced model. The pro-inflammatory cytokines were measured by using commercially available ELISA kits. Additionally, nitrite production, antioxidant enzymes, H&E staining, muscle activity and motor coordination, and kidney and liver function tests were also determined. The results demonstrated that compound-1 significantly inhibited inflammation, pain, and febrile responses in all models at a dose of 10 mg/kg without effecting viability of cells in vitro at concentrations up to 100 μM. Similarly, the data clearly demonstrated significant reduction in the pro-inflammatory cytokines and nitrite production while enhancing antioxidant enzymes. Furthermore, pretreatment with compound-1 did not produce any prominent side effect on kidney, liver, stomach, and muscles. These findings suggest that compound-1 has potent anti-inflammatory-, pain-, and pyrexia-relieving properties. Hence, compound-1 might be a potential candidate for the therapeutic management of chronic inflammation and pain.
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Affiliation(s)
- Muhammad Naveed
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shahan Zeb Khan
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
- Department of Chemistry, University of Science and Technology, Bannu, KPK, 28100, Pakistan
| | - Sara Zeeshan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Adnan Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Bushra Shal
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ayesha Atiq
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hussain Ali
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Rahim Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Zia-Ur-Rehman
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Salman Khan
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
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Garg BK, Loring RH. GTS-21 has cell-specific anti-inflammatory effects independent of α7 nicotinic acetylcholine receptors. PLoS One 2019; 14:e0214942. [PMID: 30947238 PMCID: PMC6448884 DOI: 10.1371/journal.pone.0214942] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/22/2019] [Indexed: 12/15/2022] Open
Abstract
α7 Nicotinic acetylcholine receptors (nAChRs) reportedly reduce inflammation by blocking effects of the important pro-inflammatory transcription factor, nuclear factor kappa-light chain-enhancer of B cells (NFκB). The α7 nAChR partial agonist GTS-21 reduces secretion of pro-inflammatory cytokines including interleukin-6 (IL6) and tumor-necrosis factor (TNF) in models of endotoxemia and sepsis, and its anti-inflammatory effects are widely ascribed to α7 nAChR activation. However, mechanistic details of α7 nAChR involvement in GTS-21 effects on inflammatory pathways remain unclear. Here, we investigate how GTS-21 acts in two cell systems including the non-immune rat pituitary cell line GH4C1 expressing an NFκB-driven reporter gene and cytokine secretion by ex vivo cultures of primary mouse macrophages activated by lipopolysaccharide (LPS). GTS-21 does not change TNF-stimulated NFκB signaling in GH4C1 cells expressing rat α7 nAChRs, suggesting that GTS-21 requires additional unidentified factors besides α7 nAChR expression to allow anti-inflammatory effects in these cells. In contrast, GTS-21 dose-dependently suppresses LPS-induced IL6 and TNF secretion in primary mouse macrophages endogenously expressing α7 nAChRs. GTS-21 also blocks TNF-induced phosphorylation of NFκB inhibitor alpha (IκBα), an important intermediary in NFκB signaling. However, α7 antagonists methyllycaconitine and α-bungarotoxin only partially reverse GTS-21 blockade of IL6 and TNF secretion. Further, GTS-21 significantly inhibited LPS-induced IL6 and TNF secretion in macrophages isolated from knockout mice lacking α7 nAChRs. These data indicate that even though a discrete component of the anti-inflammatory effects of GTS-21 requires expression of α7 nAChRs in macrophages, GTS-21 also has anti-inflammatory effects independent of these receptors depending on the cellular context.
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Affiliation(s)
- Brijesh K. Garg
- Department of Pharmaceutical Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Ralph H. Loring
- Department of Pharmaceutical Science, Northeastern University, Boston, Massachusetts, United States of America
- * E-mail:
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Xia Y, Liu X, Zhang L, Zhang J, Li C, Zhang N, Xu H, Li Y. A new Schiff base coordinated copper(II) compound induces apoptosis and inhibits tumor growth in gastric cancer. Cancer Cell Int 2019; 19:81. [PMID: 30988662 PMCID: PMC6448317 DOI: 10.1186/s12935-019-0801-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/23/2019] [Indexed: 12/30/2022] Open
Abstract
Background Gastric cancer, as a multifactorial disorders, shows cytological and architectural heterogeneity compared to other gastrointestinal cancers, making it therapeutically challenging. Cisplatin is generally used in clinic for gastric cancer treatment but with toxic side effects and develops resistance. Anti-tumor properties of copper and its coordinated compounds have been explored intensively in recent years. Methods In this study, we synthesized a novel Schiff base copper coordinated compound (SBCCC) and examined its antitumor effects in two gastric cancer cell lines SGC-7901 and BGC-823 as well as a mouse model of gastric cancer. Results The results show that SBCCC can significantly inhibit the proliferation of gastric cancer cells in a dose- and time-dependent manner. The IC50 of SBCCC in SGC-7901 and BGC-823 cells is 1 μM, which is much less than cisplatin’s IC50. SBCCC induces apoptosis and causes cell cycle arrest at the G1 phase. SBCCC induces apoptosis via multiple pathways including inhibition of NF-κB, ROS production and autophagy. Conclusions The synthesized SBCCC induced cancer cell death via inhibition of NF-κB, ROS production and autophagy. The multiple cell-killing mechanisms were important to overcome therapeutic failure because of multidrug-resistance of cancer cells. SBCCC, with a lower IC50 compared to cisplatin, could render it the potential to overcome the side-effect for clinical application.
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Affiliation(s)
- Yan Xia
- 1Department of Gastroenterology, The First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021 Jilin China
| | - Xingkai Liu
- 2Department of Hepatobiliary and Pancreas Surgery, The First Hospital, Jilin University, Changchun, Jilin China
| | - Luping Zhang
- 1Department of Gastroenterology, The First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021 Jilin China
| | - Jinzhu Zhang
- 1Department of Gastroenterology, The First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021 Jilin China
| | - Chaoying Li
- 3College of Basic Medical Science, Jilin University, Changchun, 130021 China
| | - Nan Zhang
- 1Department of Gastroenterology, The First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021 Jilin China
| | - Hong Xu
- 1Department of Gastroenterology, The First Hospital of Jilin University, No. 71. Xinmin Street, Changchun, 130021 Jilin China
| | - Yan Li
- 4Division of Surgical Oncology, Department of Surgery, University of Louisville, Louisville, KY 40202 USA
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LI H, HOU H, LIU S, FENG Y, ZHONG W, HU X, YAN N. miR-33 and RIP140 participate in LPS-induced acute lung injury. Turk J Med Sci 2019; 49:422-428. [PMID: 30761836 PMCID: PMC7350843 DOI: 10.3906/sag-1804-173] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background/aim Pulmonary microvascular endothelial cells (PMVECs) play a pivotal role in the process of acute lung injury (ALI), which can be induced by lipopolysaccharide (LPS). Numerous reports have indicated that both miR-33 and RIP140 are involved in the inflammatory response in macrophages. In this study, we sought to investigate whether miR-33 and RIP140 participate in ALI induced by LPS. Materials and methods First, we isolated and identified PMVECs from BALB/c mice. Subsequently, both PMVECs and BALB/c mice were treated with PBS, LPS, or pyrrolidine dithiocarbamate (PDTC) plus LPS and divided into three groups: control (PBS), LPS (LPS), and L+P (LPS plus PDTC) groups. We assessed pathology by hematoxylin and eosin staining, and miR-33 and RIP140 expression levels were examined using quantitative PCR and Western blot analyses. Results Our results demonstrated that LPS can induce PMVEC injury and ALI and that LPS treatment significantly decreased miR-33 expression compared with controls (P < 0.001, n = 5). On the contrary, RIP140 was markedly overexpressed by LPS treatment (P < 0.001, n = 5). However, this alteration can be inhibited by pretreatment with PDTC before LPS (P < 0.05, n = 5). Conclusion This study is the first to confirm that both miR-33 and RIP140 participate in LPS-induced PMVEC injury and ALI, which may help uncover the mechanism of ALI.
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Affiliation(s)
- Hua LI
- Basic Medical Experiments Center, Nanchang University, Nanchang, JiangxiP.R. China
| | - Huan HOU
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
| | - Shuang LIU
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
| | - Yangyang FENG
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
| | - Wansi ZHONG
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
| | - Xiaojuan HU
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
| | - Nianlong YAN
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences,Nanchang University, Nanchang, JiangxiP.R. China
- * To whom correspondence should be addressed. E-mail:
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Exosomes from differentially activated macrophages influence dormancy or resurgence of breast cancer cells within bone marrow stroma. Cell Death Dis 2019; 10:59. [PMID: 30683851 PMCID: PMC6347644 DOI: 10.1038/s41419-019-1304-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 12/23/2018] [Accepted: 01/02/2019] [Indexed: 02/07/2023]
Abstract
Breast cancer (BC) cells (BCCs) can retain cellular quiescence for decades, a phenomenon referred to as dormancy. BCCs show preference for the bone marrow (BM) where they can remain dormant for decades. Targeting BCCs within the BM is a challenge since the dormant BCCs reside within BM stroma, also residence for hematopoietic stem cells (HSCs). Dormant BCCs could behave as cancer stem cells (CSCs). The CSCs and HSCs are similar by function and also, by commonly expressed genes. The method by which dormant BCCs transition into clinically metastatic cells remains unclear. This study tested the hypothesis that macrophages (MΦs) within BM stroma, facilitates dormancy or reverse this state into metastatic cells. MΦs exhibiting an M2 phenotype constitute ~10% of cultured BM stroma. The M2 MΦs form gap junctional intercellular communication (GJIC) with CSCs, resulting in cycling quiescence, reduced proliferation and carboplatin resistance. In contrast, MΦs expressing the M1 phenotype reversed BC dormancy. Activation of M2a MΦs via the toll-like receptor 4 (TLR4) switched to M1 phenotype. The switch can occur by direct activation of M2a MΦs, or indirectly through activation of mesenchymal stem cells. M1 MΦ-derived exosomes activated NFкB to reverse quiescent BCCs to cycling cells. Using an in vivo model of BC dormancy, injected Mi MOs sensitized BCCs to carboplatin and increased host survival. In summary, we have shown how BM stromal MΦs, through exosomes, regulate the behavior of BCCs, by either inducing or reversing dormancy.
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Casali CI, Erjavec LC, Fernández-Tome MDC. Sequential and synchronized hypertonicity-induced activation of Rel-family transcription factors is required for osmoprotection in renal cells. Heliyon 2019; 4:e01072. [PMID: 30603705 PMCID: PMC6304461 DOI: 10.1016/j.heliyon.2018.e01072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/31/2018] [Accepted: 12/14/2018] [Indexed: 01/28/2023] Open
Abstract
NF-κB and TonEBP belong to the Rel-superfamily of transcription factors. Several specific stimuli, including hypertonicity which is a key factor for renal physiology, are able to activate them. It has been reported that, after hypertonic challenge, NF-κB activity can be modulated by TonEBP, considered as the master regulator of transcriptional activity in the presence of changes in environmental tonicity. In the present work we evaluated whether hypertonicity-induced gene transcription mediated by p65/RelA and TonEBP occurs by an independent action of each transcription factor or by acting together. To do this, we evaluated the expression of their specific target genes and cyclooxygenase-2 (COX-2), a common target of both transcription factors, in the renal epithelial cell line Madin-Darby canine kidney (MDCK) subjected to hypertonic environment. The results herein indicate that hypertonicity activates the Rel-family transcription factors p65/RelA and TonEBP in MDCK cells, and that both are required for hypertonic induction of COX-2 and of their specific target genes. In addition, present data show that p65/RelA modulates TonEBP expression and both colocalize in nuclei of hypertonic cultures of MDCK cells. Thus, a sequential and synchronized action p65/RelA → TonEBP would be necessary for the expression of hypertonicity-induced protective genes.
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Affiliation(s)
- Cecilia I Casali
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Biología Celular y Molecular, Buenos Aires, Argentina.,Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas Prof. Dr. Alejandro C. Paladini (IQUIFIB)-Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
| | - Luciana C Erjavec
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Biología Celular y Molecular, Buenos Aires, Argentina
| | - María Del Carmen Fernández-Tome
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Biología Celular y Molecular, Buenos Aires, Argentina.,Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas Prof. Dr. Alejandro C. Paladini (IQUIFIB)-Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
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24
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Borghi SM, Fattori V, Ruiz-Miyazawa KW, Bertozzi MM, Lourenco-Gonzalez Y, Tatakihara RI, Bussmann AJ, Mazzuco TL, Casagrande R, Verri WA. Pyrrolidine dithiocarbamate inhibits mouse acute kidney injury induced by diclofenac by targeting oxidative damage, cytokines and NF-κB activity. Life Sci 2018; 208:221-231. [DOI: 10.1016/j.lfs.2018.07.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/13/2018] [Accepted: 07/19/2018] [Indexed: 02/06/2023]
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25
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Schmitt A, Haug AL, Schlegel F, Fragasso A, Munz B. Effects of 10 weeks of regular running exercise with and without parallel PDTC treatment on expression of genes encoding sarcomere-associated proteins in murine skeletal muscle. Cell Stress Chaperones 2018; 23:1041-1054. [PMID: 29797237 PMCID: PMC6111093 DOI: 10.1007/s12192-018-0914-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 12/16/2022] Open
Abstract
Physical exercise can induce various adaptation reactions in skeletal muscle tissue, such as sarcomere remodeling. The latter involves degradation of damaged sarcomere components, as well as de novo protein synthesis and sarcomere assembly. These processes are controlled by specific protease systems in parallel with molecular chaperones that assist in folding of newly synthesized polypeptide chains and their incorporation into sarcomeres. Since acute exercise induces oxidative stress and inflammation, leading to activation of the transcription factor NFκB (nuclear factor kappa B), we speculated that this transcription factor might also play a role in the regulation of long-term adaptation to regular exercise. Thus, we studied skeletal muscle adaptation to running exercise in a murine model system, with and without parallel treatment with the NFκB-inhibitory, anti-oxidant and anti-inflammatory drug pyrrolidine dithiocarbamate (PDTC). In control mice, 10 weeks of uphill (15° incline) treadmill running for 60 min thrice a week at a final speed of 14 m/min had differential, but only minor effects on many genes encoding molecular chaperones for sarcomere proteins, and/or factors involved in the degradation of the latter. Furthermore, there were marked differences between individual muscles. PDTC treatment modulated gene expression patterns as well, both in sedentary and exercising mice; however, most of these effects were also modest and there was little effect of PDTC treatment on exercise-induced changes in gene expression. Taken together, our data suggest that moderate-intensity treadmill running, with or without parallel PDTC treatment, had little effect on the expression of genes encoding sarcomere components and sarcomere-associated factors in murine skeletal muscle tissue.
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Affiliation(s)
- Angelika Schmitt
- Department of Sports Medicine, Medical Clinic, University Hospital Tübingen, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany
| | - Anne-Lena Haug
- Department of Sports Medicine, Medical Clinic, University Hospital Tübingen, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany
| | - Franziska Schlegel
- Department of Sports Medicine, Medical Clinic, University Hospital Tübingen, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany
| | - Annunziata Fragasso
- Department of Sports Medicine, Medical Clinic, University Hospital Tübingen, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany
| | - Barbara Munz
- Department of Sports Medicine, Medical Clinic, University Hospital Tübingen, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany.
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26
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Martinez RM, Ivan ALM, Vale DL, Campanini MZ, Ferreira VS, Steffen VS, Vicentini FTMC, Vilela FMP, Fonseca MJV, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Topical emulsion containing pyrrolidine dithiocarbamate: effectiveness against ultraviolet B irradiation-induced injury of hairless mouse skin. J Pharm Pharmacol 2018; 70:1461-1473. [PMID: 30132896 DOI: 10.1111/jphp.12997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 07/21/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To evaluate the effects of a topical emulsion containing pyrrolidine dithiocarbamate (PDTC) (EcPDTC) in skin oxidative stress and inflammation triggered by ultraviolet B (UVB) irradiation (dose of 4.14 J/cm2 ). METHODS Hairless mouse received treatment with 0.5 g of EcPDTC or control emulsion (CTRLE) on the dorsal surface skin 12 h, 6 h and 5 min before and 6 h after the irradiation. Oxidative stress was evaluated by ferric reducing antioxidant power (FRAP), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radical (ABTS) scavenging capacity, reduced glutathione quantitation, catalase activity, superoxide anion production and lipid peroxidation products. Inflammation parameters were as follows: skin oedema, myeloperoxidase activity (neutrophil marker), matrix metalloproteinase-9 activity, collagen fibre damage, mast cell and sunburn cell counts, and cytokine production. KEY FINDINGS Topical treatment with EcPDTC protected from UVB-induced skin injury by maintaining the antioxidant capacity levels similar to non-irradiated control group. Furthermore, EcPDTC inhibited UVB irradiation-induced superoxide anion production, lipid peroxidation and reduced skin inflammation by inhibiting skin oedema, neutrophil recruitment, metalloproteinase-9 activity, collagen fibre damage, mast cell and sunburn cell counts, and cytokine (TNF-α and IL-1β) production. CONCLUSIONS Topical treatment with EcPDTC improves antioxidant systems and inhibits inflammation, protecting the skin from the damaging effects of UVB irradiation.
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Affiliation(s)
- Renata M Martinez
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Ana L M Ivan
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - David L Vale
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Marcela Z Campanini
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Vitor S Ferreira
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Vinicius S Steffen
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Fabiana T M C Vicentini
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Fernanda M P Vilela
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Maria J V Fonseca
- Department of Pharmaceutical Science, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Marcela M Baracat
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Sandra R Georgetti
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
| | - Waldiceu A Verri
- Department of Pathology, Biological Science Center, State University of Londrina, Londrina, Brazil
| | - Rúbia Casagrande
- Department of Pharmaceutical Science, Health Science Center, State University of Londrina, Londrina, Brazil
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27
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Narsale AA, Puppa MJ, Hardee JP, VanderVeen BN, Enos RT, Murphy EA, Carson JA. Short-term pyrrolidine dithiocarbamate administration attenuates cachexia-induced alterations to muscle and liver in ApcMin/+ mice. Oncotarget 2018; 7:59482-59502. [PMID: 27449092 PMCID: PMC5312326 DOI: 10.18632/oncotarget.10699] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/09/2016] [Indexed: 12/19/2022] Open
Abstract
Cancer cachexia is a complex wasting condition characterized by chronic inflammation, disrupted energy metabolism, and severe muscle wasting. While evidence in pre-clinical cancer cachexia models have determined that different systemic inflammatory inhibitors can attenuate several characteristics of cachexia, there is a limited understanding of their effects after cachexia has developed, and whether short-term administration is sufficient to reverse cachexia-induced signaling in distinctive target tissues. Pyrrolidine dithiocarbamate (PDTC) is a thiol compound having anti-inflammatory and antioxidant properties which can inhibit STAT3 and nuclear factor κB (NF-κB) signaling in mice. This study examined the effect of short-term PDTC administration to ApcMin/+ mice on cachexia-induced disruption of skeletal muscle protein turnover and liver metabolic function. At 16 weeks of age ApcMin/+ mice initiating cachexia (7% BW loss) were administered PDTC (10mg/kg bw/d) for 2 weeks. Control ApcMin/+ mice continued to lose body weight during the treatment period, while mice receiving PDTC had no further body weight decrease. PDTC had no effect on either intestinal tumor burden or circulating IL-6. In muscle, PDTC rescued signaling disrupting protein turnover regulation. PDTC suppressed the cachexia induction of STAT3, increased mTORC1 signaling and protein synthesis, and suppressed the induction of Atrogin-1 protein expression. Related to cachectic liver metabolic function, PDTC treatment attenuated glycogen and lipid content depletion independent to the activation of STAT3 and mTORC1 signaling. Overall, these results demonstrate short-term PDTC treatment to cachectic mice attenuated cancer-induced disruptions to muscle and liver signaling, and these changes were independent to altered tumor burden and circulating IL-6.
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Affiliation(s)
- Aditi A Narsale
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, USA
| | - Melissa J Puppa
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, USA
| | - Justin P Hardee
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, USA
| | - Brandon N VanderVeen
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, USA
| | - Reilly T Enos
- Department of Pathology, Microbiology & Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina, USA
| | - E Angela Murphy
- Department of Pathology, Microbiology & Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina, USA
| | - James A Carson
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, USA.,Center for Colon Cancer Research, University of South Carolina, Columbia, South Carolina, USA
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28
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Pyrrolidine dithiocarbamate (PDTC) inhibits inflammatory signaling via expression of regulator of calcineurin activity 1 (RCAN1). Biochem Pharmacol 2017; 143:107-117. [DOI: 10.1016/j.bcp.2017.07.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/11/2017] [Indexed: 11/20/2022]
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29
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DeMartino AW, Souza ML, Ford PC. Uncaging carbon disulfide. Delivery platforms for potential pharmacological applications: a mechanistic approach. Chem Sci 2017; 8:7186-7196. [PMID: 29081951 PMCID: PMC5633850 DOI: 10.1039/c7sc02727c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 09/03/2017] [Indexed: 01/30/2023] Open
Abstract
We describe the kinetics of the formation and decay of a series of dithiocarbamates under physiological conditions. The goal is to provide a toolbox of compounds that release CS2 by well-defined kinetics in such media. Carbon disulfide is a known environmental toxin, but there is fragmentary evidence suggesting that CS2 may have bioregulatory and/or therapeutic roles in mammalian biology. Further investigation of such roles will require methodologies for controlled delivery of this bioactive small molecule to specific targets. Reported here are mechanistic and computational studies of CS2 release from a series of dithiocarbamate anions (DTCs), where R2N represents several different secondary amido groups. The various DTCs under physiologically relevant conditions show a tremendous range of reactivities toward CS2 dissociation with decay lifetimes ranging from ∼2 s for imidazolidyldithiocarbamate (ImDTC-) to ∼300 s for diisopropyldithiocarbamate (DIDTC-) to >24 h for pyrrolidinyldithiocarbamate (PDTC-) in pH 7.4 phosphate buffer solution at 37 °C. Thus, by making the correct choice of these tools, one can adjust the flux of CS2 in a biological experiment, while the least reactive DTCs could serve as controls for evaluating the potential effects of the dithiocarbamate functionality itself. Kinetics studies and density functional calculations are used to probe the mechanism of DTC- decay. In each case, the rate of CS2 dissociation is acid dependent; however, the DFT studies point to a mechanistic pathway for ImDTC- that is different than those for DIDTC-. The role of general acid catalysis is also briefly probed.
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Affiliation(s)
- Anthony W DeMartino
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , CA 93106-9510 , USA .
| | - Maykon Lima Souza
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , CA 93106-9510 , USA .
| | - Peter C Ford
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , CA 93106-9510 , USA .
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30
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Ramakrishnan A, Vijayakumar N. Urea cycle pathway targeted therapeutic action of naringin against ammonium chloride induced hyperammonemic rats. Biomed Pharmacother 2017; 94:1028-1037. [DOI: 10.1016/j.biopha.2017.08.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 12/25/2022] Open
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31
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Li J, Xia K, Xiong M, Wang X, Yan N. Effects of sepsis on the metabolism of sphingomyelin and cholesterol in mice with liver dysfunction. Exp Ther Med 2017; 14:5635-5640. [PMID: 29285103 DOI: 10.3892/etm.2017.5226] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 07/27/2017] [Indexed: 11/06/2022] Open
Abstract
Sepsis is characterized by a severe inflammatory response to infection. With the spread of sepsis, various tissues, including the lungs, liver and kidney, may be damaged. This may finally develop into multiple organ dysfunction syndrome. Sphingomyelin and cholesterol are two main lipids involved in sepsis. The metabolism of sphingomyelin and cholesterol in the livers of mice with sepsis needs to be clarified. To achieve this, the present study intraperitoneally injected mice with PBS, lipopolysaccharide (LPS; 10 mg/kg) and LPS + pyrrolidine dithiocarbamate (PDTC; 30 mg/kg). Subsequently, sphingomyelin and cholesterol content were measured using kits, the sphingomyelin synthase (SMS) activity was measured using thin layer chromatography, and the expression levels of SMS1 and 2, hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR), ATP binding cassette subfamily A member 1 (ABCA1), scavenger receptor class B member 1 (SR-B1) and apolipoprotein A1 (Apo A1) were determined by western blotting in the livers of mice. Results demonstrated that, in the LPS group, sphingomyelin and cholesterol content was significantly increased (P<0.001; n=6), the SMS activity significantly enhanced (P<0.001; n=6), the expression levels of SMS2, HMGCR, ABCA1 and SR-B1 were augmented (P<0.05; n=6), and the expression of Apo A1 was decreased (P<0.05; n=6), whereas SMS1 level only slightly increased with no statistical significance (P>0.05; n=6), compared to the levels in the control group. However, PDTC was able to attenuate these alterations. These results indicated that sphingomyelin and cholesterol content may increase in the liver dysfunction of sepsis by increasing the expression of SMS2, HMGCR, SR-B1 and ABCA1, and downregulating Apo A1.
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Affiliation(s)
- Jiaqi Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Kun Xia
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Mingdi Xiong
- Basic Medical Experiments Center, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xi Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Nianlong Yan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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32
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Zhang M, Cui Z, Cui H, Wang Y, Zhong C. Astaxanthin protects astrocytes against trauma-induced apoptosis through inhibition of NKCC1 expression via the NF-κB signaling pathway. BMC Neurosci 2017; 18:42. [PMID: 28490320 PMCID: PMC5425995 DOI: 10.1186/s12868-017-0358-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 04/26/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Astaxanthin (ATX) is a carotenoid pigment with pleiotropic pharmacological properties that is seen as a possible drug for treating cerebral ischemic injury and subarachnoid hemorrhage. Na+-K+-2Cl- co-transporter-1 (NKCC1), an intrinsic membrane protein expressed by many cell types, is activated by various insults, leading to the formation of cell swelling and brain edema. We previously established that ATX attenuated brain edema and improved neurological outcomes by modulating NKCC1 expression after traumatic brain injury in mice. This paper explored the molecular mechanism of ATX-mediated inhibition of NKCC1 utilizing an in vitro astrocyte stretch injury model. RESULTS Stretch injury in cultured astrocytes lowered cell viability time-dependently, which was substantially reducing by pretreating with ATX (50 μmol/L). Stretch injury increased Bax level and cleaved caspase-3 activity, and decreased Bcl-2 level and pro-caspase 3 activity, resulting in the apoptosis of astrocytes. Additionally, stretch injury substantially raised the gene and protein expressions of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α and prompted the expression and nuclear translocation of NF-κB. Pretreatment with ATX remarkably prevented the trauma-induced initiation of NF-κB, expressions of pro-inflammatory cytokines, and cell apoptosis. Moreover, stretch injury markedly elevated the gene and protein expression of NKCC1, which was partly blocked by co-treatment with ATX (50 µmol/L) or an NF-κB inhibitor (PDTC, 10 µmol/L). Cleaved caspase-3 activity was partially reduced by PDTC (10 µmol/L) or an NKCC1 inhibitor (bumetanide, 50 µmol/L). CONCLUSIONS ATX attenuates apoptosis after stretch injury in cultured astrocytes by inhibiting NKCC1 expression, and it acts by reducing the expression of NF-κB-mediated pro-inflammatory factors.
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Affiliation(s)
- Mingkun Zhang
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.,Department of Neurosurgery, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, China
| | - Zhenwen Cui
- Department of Neurosurgery, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, China.,Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, 266005, China
| | - Hua Cui
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Yong Wang
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Chunlong Zhong
- Department of Neurosurgery, East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, 200120, China.
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33
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Carlson CG, Stein L, Dole E, Potter RM, Bayless D. Agents Which Inhibit NF-κB Signaling Block Spontaneous Contractile Activity and Negatively Influence Survival of Developing Myotubes. J Cell Physiol 2017; 231:788-97. [PMID: 26130066 DOI: 10.1002/jcp.25085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/25/2015] [Indexed: 01/06/2023]
Abstract
Inhibiting the NF-κB signaling pathway provides morphological and functional benefits for the mdx mouse, a model for Duchenne muscular dystrophy characterized by chronic elevations in the nuclear expression of p65, the transactivating component of the NF-κB complex. The purpose of this study was to examine p65 expression in nondystrophic and mdx myotubes using confocal immunofluorescence, and determine whether inhibitors of the NF-κB pathway alter myotube development. Primary cultures of nondystrophic and mdx myotubes had identical levels of nuclear and cytosolic p65 expression and exhibited equivalent responses to TNF-α, thus excluding the hypothesis that the lack of dystrophin is sufficient to induce increases in NF-κB signaling. The NF-κB inhibitors pyrrolidine dithiocarbamate (PDTC) and sulfasalazine decreased spontaneous contractile activity and reduced myotube viability in a dose- and time-dependent manner. Similarly, a vivo-morpholino designed to block translation of murine p65 (m-p65tb-vivomorph1) rapidly abolished spontaneous contractile activity, reduced p65 expression measured by confocal immunofluorescence, and induced cell death in primary cultures of nondystrophic and mdx myotubes. Similar effects on p65 immunofluorescence and cell viability were observed following m-p65tb-vivomorph1 exposure to spontaneously inactive C2C12 myotubes, while exposure to a control scrambled vivo morpholino had no effect. These results indicate a direct role of the NF-κB pathway in myotube development and identify a potential therapeutic limitation to the use of NF-κB inhibitors in treating Duchenne and related muscular dystrophies. J. Cell. Physiol. 231: 788-797, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- C George Carlson
- Department of Physiology, Midwestern University Glendale, Glendale, Arizona.,Department of Physiology, Kirksville College Osteopathic Medicine, Kirksville, Missouri
| | - Lauren Stein
- Department of Physiology, Kirksville College Osteopathic Medicine, Kirksville, Missouri
| | - Elizabeth Dole
- Department of Physiology, Kirksville College Osteopathic Medicine, Kirksville, Missouri
| | - Ross M Potter
- Department of Physiology, Midwestern University Glendale, Glendale, Arizona
| | - David Bayless
- Department of Physiology, Kirksville College Osteopathic Medicine, Kirksville, Missouri
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34
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Nandi A, Bishayi B. CCR-2 neutralization augments murine fresh BMC activation by Staphylococcus aureus via two distinct mechanisms: at the level of ROS production and cytokine response. Innate Immun 2017; 23:345-372. [PMID: 28409543 DOI: 10.1177/1753425917697806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
CCR-2 signaling regulates recruitment of monocytes from the bone marrow into the bloodstream and then to sites of infection. We sought to determine whether CCL-2/CCR-2 signaling is involved in the killing of Staphylococcus aureus by murine bone marrow cells (BMCs). The intermittent link of reactive oxygen species (ROS)-NF-κB/p38-MAPK-mediated CCL-2 production in CCR-2 signaling prompted us to determine whether neutralization of CCR-2 augments the response of murine fresh BMCs (FBMCs) after S. aureus infection. It was observed that anti-CCR-2 Ab-treated FBMCs released fewer ROS on encountering S. aureus infection than CCR-2 non-neutralized FBMCs, also correlating with reduced killing of S. aureus in CCR-2 neutralized FBMCs. Staphylococcal catalase and SOD were also found to play a role in protecting S. aureus from the ROS-mediated killing of FBMC. S. aureus infection of CCR-2 intact FBMCs pre-treated with either NF-κB or p-38-MAPK blocker induced less CCL-2, suggesting that NF-κB or p-38-MAPK is required for CCL-2 production by FBMCs. Moreover, blocking of CCR-2 along with NF-κB or p-38-MAPK resulted in elevated CCL-2 production and reduced CCR-2 expression. Inhibition of CCR-2 impairs the response of murine BMCs to S. aureus infection by attenuation ROS production and modulating the cytokine response.
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Affiliation(s)
- Ajeya Nandi
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, West Bengal, India
| | - Biswadev Bishayi
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, West Bengal, India
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35
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Angiotensin II Receptor Blockers Attenuate Lipopolysaccharide-Induced Memory Impairment by Modulation of NF-κB-Mediated BDNF/CREB Expression and Apoptosis in Spontaneously Hypertensive Rats. Mol Neurobiol 2017; 55:1725-1739. [DOI: 10.1007/s12035-017-0450-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 02/07/2017] [Indexed: 11/28/2022]
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36
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Bhat OM, Uday Kumar P, Harishankar N, Ravichandaran L, Bhatia A, Dhawan V. Interleukin-18-induced cell adhesion molecule expression is associated with feedback regulation by PPAR-γ and NF-κB in Apo E-/- mice. Mol Cell Biochem 2017; 428:119-128. [PMID: 28176248 DOI: 10.1007/s11010-016-2922-8] [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] [Received: 09/01/2016] [Accepted: 12/21/2016] [Indexed: 10/20/2022]
Abstract
Focal recruitment of monocytes and lymphocytes is one of the earliest detectable cellular responses in atherosclerotic lesion formation. Endothelium may regulate leukocyte recruitment by expressing specific adhesion molecules. Interleukin-18 is a proinflammatory cytokine that plays an important role in vascular pathologies. The present study highlights the modulation of adhesion molecules and PPAR-γ by IL-18 and proposes a novel feedback mechanism by which PPAR-γ may regulate IL-18 expression. Three groups of normal chow diet-fed, male Apo E-/- mice, aged 12 weeks (n = 6/group) were employed: Gp I, phosphate-buffered saline (PBS) (2 mo): Gp II, recombinant IL-18 (rIL-18) (1 mo) followed by PBS (1 mo); Gp III, rIL-18 (1 mo) followed by pyrrolidine dithiocarbamate (PDTC) (1 mo). Significantly augmented mRNA expression of ICAM-1 (~5.7-fold), VCAM-1 (~3.6-fold), and NF-κB (~7-fold) was observed in Gp II mice as compared to Gp I, whereas PPAR-γ expression was not altered. PDTC treatment caused a significant downregulation of ICAM-1 (~4.2-fold), VCAM-1(~2-fold), and NF-κB (~4.5-fold) and upregulation of PPAR-γ expression (~5-fold) in Gp III mice. A similar trend was observed in protein expression. In vivo imaging results demonstrated a marked increase in probe (CF750 dye conjugated to VCAM-1 antibody) fluorescence intensity for VCAM-1 expression in Gp II mice, whereas it was moderately decreased in Gp III. PPAR-γ was found to significantly downregulate both IL-18 levels and IL-18-induced adhesion molecules. The underlying mechanism was found to be via inhibition of NF-κB activity by PDTC, thereby leading to decreased adherence of monocytes to the activated endothelial cells and a step to halt the progression and development of atherosclerotic lesions.
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Affiliation(s)
- Owais Mohammad Bhat
- Department of Experimental Medicine and Biotechnology, Research Block-B, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.,Department of Pharmacology and Toxicology, Virginia Common Wealth University, Richmond, VA, USA
| | - P Uday Kumar
- Department of Histopathology, National Centre for Laboratory Animal Sciences (NCLAS), National Institute of Nutrition (NIN), Hyderabad, India
| | - N Harishankar
- Department of Histopathology, National Centre for Laboratory Animal Sciences (NCLAS), National Institute of Nutrition (NIN), Hyderabad, India
| | - L Ravichandaran
- Department of Histopathology, National Centre for Laboratory Animal Sciences (NCLAS), National Institute of Nutrition (NIN), Hyderabad, India
| | - A Bhatia
- Department of Experimental Medicine and Biotechnology, Research Block-B, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
| | - Veena Dhawan
- Department of Experimental Medicine and Biotechnology, Research Block-B, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
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Buzzo CDL, Medina T, Branco LM, Lage SL, Ferreira LCDS, Amarante-Mendes GP, Hottiger MO, De Carvalho DD, Bortoluci KR. Epigenetic regulation of nitric oxide synthase 2, inducible (Nos2) by NLRC4 inflammasomes involves PARP1 cleavage. Sci Rep 2017; 7:41686. [PMID: 28150715 PMCID: PMC5288713 DOI: 10.1038/srep41686] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 12/21/2016] [Indexed: 12/11/2022] Open
Abstract
Nitric oxide synthase 2, inducible (Nos2) expression is necessary for the microbicidal activity of macrophages. However, NOS2 over-activation causes multiple inflammatory disorders, suggesting a tight gene regulation is necessary. Using cytosolic flagellin as a model for inflammasome-dependent NOS2 activation, we discovered a surprising new role for NLRC4/caspase-1 axis in regulating chromatin accessibility of the Nos2 promoter. We found that activation of two independent mechanisms is necessary for NOS2 expression by cytosolic flagellin: caspase-1 and NF-κB activation. NF-κB activation was necessary, but not sufficient, for NOS2 expression. Conversely, caspase-1 was necessary for NOS2 expression, but dispensable for NF-κB activation, indicating that this protease acts downstream NF-κB activation. We demonstrated that epigenetic regulation of Nos2 by caspase-1 involves cleavage of the chromatin regulator PARP1 (also known as ARTD1) and chromatin accessibility of the NF-κB binding sites located at the Nos2 promoter. Remarkably, caspase-1-mediated Nos2 transcription and NO production contribute to the resistance of macrophages to Salmonella typhimurium infection. Our results uncover the molecular mechanism behind the constricted regulation of Nos2 expression and open new therapeutic opportunities based on epigenetic activities of caspase-1 against infectious and inflammatory diseases.
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Affiliation(s)
- Carina de Lima Buzzo
- Centro de Terapia Celular e Molecular (CTC-Mol) e Departamento de Ciências Biológicas - Universidade Federal de São Paulo, São Paulo, Brazil.,Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Tiago Medina
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 2M9, Canada
| | - Laura M Branco
- Centro de Terapia Celular e Molecular (CTC-Mol) e Departamento de Ciências Biológicas - Universidade Federal de São Paulo, São Paulo, Brazil.,Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo and Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT-iii), Brazil
| | - Silvia L Lage
- Centro de Terapia Celular e Molecular (CTC-Mol) e Departamento de Ciências Biológicas - Universidade Federal de São Paulo, São Paulo, Brazil.,Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo and Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT-iii), Brazil
| | | | - Gustavo P Amarante-Mendes
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo and Instituto de Investigação em Imunologia, Instituto Nacional de Ciência e Tecnologia (INCT-iii), Brazil
| | - Michael O Hottiger
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | - Daniel D De Carvalho
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 2M9, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, M5G 2M9, Canada
| | - Karina R Bortoluci
- Centro de Terapia Celular e Molecular (CTC-Mol) e Departamento de Ciências Biológicas - Universidade Federal de São Paulo, São Paulo, Brazil
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Tang X, Guo D, Lin C, Shi Z, Qian R, Fu W, Liu J, Li X, Fan L. hCLOCK induction by hypoxia promotes inflammatory responses by activating the NF‑κB pathway. Mol Med Rep 2017; 15:1401-1406. [PMID: 28098888 DOI: 10.3892/mmr.2017.6127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 11/25/2016] [Indexed: 11/06/2022] Open
Abstract
The expression and secretion of infla-mmation‑associated cytokines are induced by hypoxia. Circadian locomotor output cycles protein kaput (CLOCK) has previously been shown to activate the nuclear factor‑κB (NF‑κB) pathway, which is a key transcription factor during hypoxia. The present study evaluated the role of the NF‑κB pathway in the CLOCK‑induced inflammatory response. Under hypoxic conditions, the expression levels of NF‑κB and proinflammatory cytokines, including interleukin (IL)‑1, IL‑1β, IL‑6, intercellular adhesion molecule 1, cyclooxygenase 2 and tumor necrosis factor alpha, were significantly increased compared with under control conditions. Conversely, human umbilical vein endothelial cells (HUVECs) that were transfected with small hairpin RNA against human CLOCK exhibited reversed effects. Furthermore, inhibition of NF‑κB with pyrrolidine dithiocarbamate (PDTC) reduced the expression of proinflammatory cytokines in HUVECs treated under hypoxic conditions. In addition, the CLOCK‑induced inflammatory response was abolished with PDTC treatment. These findings suggest that the mechanism by which CLOCK induces inflammation mainly involves activation of the NF‑κB signaling pathway.
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Affiliation(s)
- Xiao Tang
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Daqiao Guo
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Changpo Lin
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Zhenyu Shi
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Ruizhe Qian
- Department of Physiology and Pathophysiology, Fudan University Shanghai Medical College, Shanghai 200032, P.R. China
| | - Weiguo Fu
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Jianjun Liu
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Xu Li
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Longhua Fan
- Department of Vascular Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
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Zaafan MA, Zaki HF, El-Brairy AI, Kenawy SA. Pyrrolidinedithiocarbamate attenuates bleomycin-induced pulmonary fibrosis in rats: Modulation of oxidative stress, fibrosis, and inflammatory parameters. Exp Lung Res 2016; 42:408-416. [PMID: 27797599 DOI: 10.1080/01902148.2016.1244578] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The current study aimed to investigate the modulatory effects of pyrrolidinedithiocarbamate (PDTC; 100 mg/kg) on bleomycin-induced pulmonary fibrosis (5 mg/kg; intratracheal) in rats. MATERIALS AND METHODS Rats were randomly assigned to three groups: normal control, bleomycin control, and PDTC-treated groups. Lung injury was evaluated through histological examination, immunohistochemical detection of inducible nitric oxide synthase (iNOS) in lung tissue and evaluating the total and differential leucocytes count in bronchoalveolar lavage fluid. Lung tissue was used for biochemical assessment of lung content of hydroxyproline, transforming growth factor beta-1 (TGF-β1), tumor necrosis factor-alpha (TNF-α) as well as analysis of lipid peroxides, reduced glutathione (GSH), and total nitrite contents. RESULTS PDTC attenuated bleomycin-induced pulmonary fibrosis as evidenced by histological observations, decreased iNOS expression and prevention of bleomycin-induced altered total and differential leukocytes count. Additionally, PDTC caused a significant decrease in lung contents of hydroxyproline, TGF-β1, TNF-α, lipid peroxides, and total nitrite coupled with increase in lung GSH content as compared to bleomycin control group. CONCLUSION PDTC attenuated bleomycin-induced pulmonary fibrosis in rats via its anti-inflammatory, antioxidant, and antifibrotic activities.
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Affiliation(s)
- Mai A Zaafan
- a Pharmacology & Toxicology Department , Faculty of Pharmacy, October University for Modern Sciences and Arts , Cairo , Egypt
| | - Hala F Zaki
- b Pharmacology & Toxicology Department , Faculty of Pharmacy, Cairo University , Giza , Egypt
| | - Amany I El-Brairy
- a Pharmacology & Toxicology Department , Faculty of Pharmacy, October University for Modern Sciences and Arts , Cairo , Egypt
| | - Sanaa A Kenawy
- b Pharmacology & Toxicology Department , Faculty of Pharmacy, Cairo University , Giza , Egypt
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Kan MH, Yang T, Fu HQ, Fan L, Wu Y, Terrando N, Wang TL. Pyrrolidine Dithiocarbamate Prevents Neuroinflammation and Cognitive Dysfunction after Endotoxemia in Rats. Front Aging Neurosci 2016; 8:175. [PMID: 27493629 PMCID: PMC4954850 DOI: 10.3389/fnagi.2016.00175] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/28/2016] [Indexed: 01/01/2023] Open
Abstract
Systemic inflammation, for example as a result of infection, often contributes to long-term complications. Neuroinflammation and cognitive decline are key hallmarks of several neurological conditions, including advance age. The contribution of systemic inflammation to the central nervous system (CNS) remains not fully understood. Using a model of peripheral endotoxemia with lipopolysaccharide (LPS) we investigated the role of nuclear factor-κB (NF-κB) activity in mediating long-term neuroinflammation and cognitive dysfunction in aged rats. Herein we describe the anti-inflammatory effects of pyrrolidine dithiocarbamate (PDTC), a selective NF-κB inhibitor, in modulating systemic cytokines including tumor necrosis factor (TNF)-α and interleukin-1β (IL-1β) and CNS markers after LPS exposure in aged rats. In the hippocampus, PDTC not only reduced neuroinflammation by modulating canonical NF-κB activity but also affected IL-1β expression in astrocytes. Parallel effects were observed on behavior and postsynaptic density-95 (PSD95), a marker of synaptic function. Taken together these changes improved acute and long-term cognitive function in aged rats after LPS exposure.
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Affiliation(s)
- Min Hui Kan
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical UniversityBeijing, China; Department of Anatomy, Capital Medical UniversityBeijing, China
| | - Ting Yang
- Department of Medicine, Division of Nephrology, Durham VA and Duke University Medical Centers Durham, NC, USA
| | - Hui Qun Fu
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University Beijing, China
| | - Long Fan
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University Beijing, China
| | - Yan Wu
- Department of Anatomy, Capital Medical University Beijing, China
| | - Niccolò Terrando
- Department of Anesthesiology, Basic Science Division, Duke University Medical Center Durham, NC, USA
| | - Tian-Long Wang
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University Beijing, China
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41
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Pinho-Ribeiro FA, Fattori V, Zarpelon AC, Borghi SM, Staurengo-Ferrari L, Carvalho TT, Alves-Filho JC, Cunha FQ, Cunha TM, Casagrande R, Verri WA. Pyrrolidine dithiocarbamate inhibits superoxide anion-induced pain and inflammation in the paw skin and spinal cord by targeting NF-κB and oxidative stress. Inflammopharmacology 2016; 24:97-107. [PMID: 27160222 DOI: 10.1007/s10787-016-0266-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/28/2016] [Indexed: 12/30/2022]
Abstract
We evaluated the effect of pyrrolidine dithiocarbamate (PDTC) in superoxide anion-induced inflammatory pain. Male Swiss mice were treated with PDTC and stimulated with an intraplantar or intraperitoneal injection of potassium superoxide, a superoxide anion donor. Subcutaneous PDTC treatment attenuated mechanical hyperalgesia, thermal hyperalgesia, paw oedema and leukocyte recruitment (neutrophils and macrophages). Intraplantar injection of superoxide anion activated NF-κB and increased cytokine production (IL-1β, TNF-α and IL-10) and oxidative stress (nitrite and lipid peroxidation levels) at the primary inflammatory foci and in the spinal cord (L4-L6). PDTC treatment inhibited superoxide anion-induced NF-κB activation, cytokine production and oxidative stress in the paw and spinal cord. Furthermore, intrathecal administration of PDTC successfully inhibited superoxide anion-induced mechanical hyperalgesia, thermal hyperalgesia and inflammatory response in peripheral foci (paw). These results suggest that peripheral stimulus with superoxide anion activates the local and spinal cord oxidative- and NF-κB-dependent inflammatory nociceptive mechanisms. PDTC targets these events, therefore, inhibiting superoxide anion-induced inflammatory pain in mice.
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Affiliation(s)
- Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Victor Fattori
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Ana C Zarpelon
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Sergio M Borghi
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Larissa Staurengo-Ferrari
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Thacyana T Carvalho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Jose C Alves-Filho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Fernando Q Cunha
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Hospital Universitário, Universidade Estadual de Londrina, Av. Robert Koch, 60, 86038-350, Londrina, Paraná, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR445 KM380, 86057-970, Londrina, Paraná, Brazil.
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Huang M, Lou D, Li HH, Cai Q, Wang YP, Yang HF. Pyrrolidine dithiocarbamate attenuates paraquat-induced acute pulmonary poisoning in vivo via transforming growth factor β1 and nuclear factor κB pathway interaction. Hum Exp Toxicol 2016; 35:1312-1318. [PMID: 26860689 DOI: 10.1177/0960327116630351] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Paraquat (PQ) exposure could cause pulmonary fibrosis. The aim of this study was to investigate the protective effect of pyrrolidine dithiocarbamate (PDTC) in an acute PQ poison model. One hundred and forty-four Sprague Dawley rats were equally divided into three experimental groups: control group, PQ group, and PQ + PDTC group. At days 1, 3, 7, 14, 28, and 56 of treatment, the serum levels of transforming growth factor β1 (TGF-β1), the levels of hydroxyproline, the protein expression of nuclear factor κB (NF-κB) pathway, and histopathological change in lung tissue were assessed. The survival rate of rats treated with PQ + PDTC was increased compared with that of rats treated only with PQ (p < 0.05), and the occurrence of pathological changes was dramatically attenuated in the PQ + PDTC group. The serum levels of TGF-β1 and the hydroxyproline levels in the PQ group were significantly increased in a time-dependent manner compared with those in the control and PQ + PDTC groups on days 7, 14, 28, and 56 (p < 0.05). Additionally, the protein levels of NF-κB proteins p65, inhibitor of κB (IκB) kinase (IKKβ, and IκB-α were significantly downregulated in the PQ + PDTC group as determined by array analysis. The present findings suggest that overexpression of TGF-β1 may play an important role in PQ-induced lung injury and that PDTC, a strong NF-κB inhibitor, can rescue PQ-induced pulmonary fibrosis by influencing the protein expression of NF-κB pathway.
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Affiliation(s)
- M Huang
- Lab of Molecular Toxicology, Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, People's Republic of China
| | - D Lou
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - H-H Li
- Lab of Molecular Toxicology, Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, People's Republic of China
| | - Q Cai
- Lab of Molecular Toxicology, Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, People's Republic of China
| | - Y-P Wang
- Lab of Molecular Toxicology, Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, People's Republic of China
| | - H-F Yang
- Lab of Molecular Toxicology, Department of Occupational and Environmental Health, School of Public Health, Ningxia Medical University, Yinchuan, People's Republic of China
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Govea-Salas M, Rivas-Estilla AM, Rodríguez-Herrera R, Lozano-Sepúlveda SA, Aguilar-Gonzalez CN, Zugasti-Cruz A, Salas-Villalobos TB, Morlett-Chávez JA. Gallic acid decreases hepatitis C virus expression through its antioxidant capacity. Exp Ther Med 2015; 11:619-624. [PMID: 26893656 DOI: 10.3892/etm.2015.2923] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 09/25/2015] [Indexed: 01/16/2023] Open
Abstract
Gallic acid (GA) is a natural phenolic compound that possesses various biological effects, including antioxidant, anti-inflammatory, antibiotic, anticancer, antiviral and cardiovascular protection activities. In addition, numerous studies have reported that antioxidants possess antiviral activities. Hepatitis C virus (HCV) is one of the most important causes of chronic liver diseases worldwide, but until recently, only a small number of antiviral agents had been developed against HCV. Therefore, the present study investigated whether GA exhibits an anti-HCV activity. The effects of GA on HCV expression were examined using a subgenomic HCV replicon cell culture system that expressed HCV nonstructural proteins (NSs). In addition, GA cytotoxicity was evaluated at concentrations between 100-600 mg/ml using an MTT assay. Huh-7 replicon cells were incubated with 300 mg/ml GA for different times, and the HCV-RNA and protein levels were measured by reverse transcription-quantitative polymerase chain reaction and western blot analysis, respectively. Pyrrolidine dithiocarbamate (PDTC) was used as an antioxidant control and reactive oxygen species (ROS) production was measured during the exposure. The results indicated that GA did not produce a statistically significant cytotoxicity in parental and HCV replicon cells. Furthermore, GA downregulated the expression levels of NS5A-HCV protein (~55%) and HCV-RNA (~50%) in a time-dependent manner compared with the levels in untreated cells. Notably, GA treatment decreased ROS production at the early time points of exposure in cells expressing HCV proteins. Similar results were obtained upon PDTC exposure. These findings suggest that the antioxidant capacity of GA may be involved in the downregulation of HCV replication in hepatoma cells.
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Affiliation(s)
- Mayela Govea-Salas
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Unit, Saltillo, Coahuila 25260, México; Department of Biochemistry and Molecular Medicine, School of Medicine, Autonomous University of Nuevo Leon, Monterrey, Nuevo Leon 66450, México
| | - Ana Maria Rivas-Estilla
- Department of Biochemistry and Molecular Medicine, School of Medicine, Autonomous University of Nuevo Leon, Monterrey, Nuevo Leon 66450, México
| | - Raul Rodríguez-Herrera
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Unit, Saltillo, Coahuila 25260, México
| | - Sonia A Lozano-Sepúlveda
- Department of Biochemistry and Molecular Medicine, School of Medicine, Autonomous University of Nuevo Leon, Monterrey, Nuevo Leon 66450, México
| | - Cristobal N Aguilar-Gonzalez
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Unit, Saltillo, Coahuila 25260, México
| | - Alejandro Zugasti-Cruz
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Unit, Saltillo, Coahuila 25260, México
| | - Tanya B Salas-Villalobos
- Department of Biochemistry and Molecular Medicine, School of Medicine, Autonomous University of Nuevo Leon, Monterrey, Nuevo Leon 66450, México
| | - Jesus Antonio Morlett-Chávez
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Unit, Saltillo, Coahuila 25260, México; Clinical Laboratory Department, General Hospital Zone No. 2, Mexican Social Security Institute, Saltillo, Coahuila 25017, México
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Cabral JM, Grácio D, Soares-da-Silva P, Magro F. Short- and long-term regulation of intestinal Na+/H+ exchange by Toll-like receptors TLR4 and TLR5. Am J Physiol Gastrointest Liver Physiol 2015; 309:G703-15. [PMID: 26294670 DOI: 10.1152/ajpgi.00124.2015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/13/2015] [Indexed: 01/31/2023]
Abstract
Inappropriate activation of pattern recognition receptors has been described as a potential trigger in the development of inflammatory bowel disease (IBD). In this study, we evaluated the activity and expression of Na(+)/H(+) exchanger (NHE) subtypes in T84 intestinal epithelial cells during Toll-like receptor 4 (TLR4) activation by monophosphoryl lipid A and TLR5 by flagellin. NHE activity and intracellular pH were evaluated by spectrofluorescence. Additionally, kinase activities were evaluated by ELISA, and siRNA was used to specifically inhibit adenylyl cyclase (AC). Monophosphoryl lipid A (MPLA) (0.01-50.00 μg/ml) and flagellin (10-500 ng/ml) inhibited NHE1 activity in a concentration-dependent manner (MPLA short term -25.2 ± 5.0%, long term -31.9 ± 4.0%; flagellin short term -14.9 ± 2.0%, long term -19.1 ± 2.0%). Both ligands triggered AC3, PKA, PLC, and PKC signal molecules. Long-term exposure to flagellin and MPLA induced opposite changes on NHE3 activity; flagellin increased NHE3 activity (∼10%) with overexpression of membrane protein, whereas MPLA decreased NHE3 activity (-17.3 ± 3.0%). MPLA and flagellin simultaneously had synergistic effects on NHE activity. MPLA and flagellin impaired pHi recovery after intracellular acidification. The simultaneous exposure to MPLA and flagellin induced a substantial pHi reduction (-0.55 ± 0.03 pH units). Activation of TLR4 and TLR5 exerts marked inhibition of NHE1 activity in intestinal epithelial cells. Transduction mechanisms set into motion during TLR4-mediated and long-term TLR5-mediated inhibition of NHE1 activity involve AC3, PKA, PLC, and PKC. However, short- and long-term TLR4 activation and TLR5 activation might use different signaling pathways. The physiological alterations on intestinal epithelial cells described here may be useful in the development of better IBD therapeutics.
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Affiliation(s)
- José Miguel Cabral
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Porto, Portugal
| | - Daniela Grácio
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Porto, Portugal
| | - Patrício Soares-da-Silva
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Porto, Portugal; MedInUP, Centre for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Fernando Magro
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Porto, Portugal; MedInUP, Centre for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal; Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal
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Chyau CC, Chu CC, Chen SY, Duh PD. Djulis (Chenopodiun formosaneum) and its bioactive compounds protect against oxidative stress in human HepG2 cells. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.06.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Sgarbanti R, Amatore D, Celestino I, Marcocci ME, Fraternale A, Ciriolo MR, Magnani M, Saladino R, Garaci E, Palamara AT, Nencioni L. Intracellular redox state as target for anti-influenza therapy: are antioxidants always effective? Curr Top Med Chem 2015; 14:2529-41. [PMID: 25478883 PMCID: PMC4435240 DOI: 10.2174/1568026614666141203125211] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 10/29/2014] [Accepted: 11/02/2014] [Indexed: 12/12/2022]
Abstract
Influenza virus infections represent a big issue for public health since effective treatments are still lacking. In particular, the emergence of strains resistant to drugs limits the effectiveness of anti-influenza agents. For this reason, many efforts have been dedicated to the identification of new therapeutic strategies aimed at targeting the virus-host cell interactions. Oxidative stress is a characteristic of some viral infections including influenza. Because antioxidants defend cells from damage caused by reactive oxygen species induced by different stimuli including pathogens, they represent interesting molecules to fight infectious diseases. However, most of the available studies have found that these would-be panaceas could actually exacerbate the diseases they claim to prevent, and have thus revealed "the dark side" of these molecules. This review article discusses the latest opportunities and drawbacks of the antioxidants used in anti-influenza therapy and new perspectives.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Lucia Nencioni
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy.
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Luo H, Wang X, Wang J, Chen C, Wang N, Xu Z, Chen S, Zeng C. Chronic NF-κB blockade improves renal angiotensin II type 1 receptor functions and reduces blood pressure in Zucker diabetic rats. Cardiovasc Diabetol 2015; 14:76. [PMID: 26055622 PMCID: PMC4465496 DOI: 10.1186/s12933-015-0239-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/02/2015] [Indexed: 02/07/2023] Open
Abstract
Background Both angiotensin II type 1 receptor (AT1R) and nuclear factor-kappa B (NF-κB) play significant roles in the pathogenesis of hypertension and type 2 diabetes. However, the role of NF-κB in perpetuating renal AT1 receptors dysfunction remains unclear. The aim of the present study to determine whether blockade of NF-κB, could reverse the exaggerated renal AT1R function, reduce inflammatory state and oxidative stress, lower blood pressure in Zucker diabetic fatty (ZDF) rats. Methods Pyrrolidine dithiocarbamate (PDTC), a NF-κB inhibitor (150 mg/kg in drinking water)or vehicle was administered orally to 12-weeks-old ZDF rats and their respective control lean Zucker (LZ) rats for 4 weeks. Blood pressure was measured weekly by tail-cuff method. AT1R functions were determined by measuring diuretic and natriuretic responses to AT1R antagonist (candesartan; 10 μg/kg/min iv). The mRNA and protein levels of NF-κB, oxidative stress maker and AT1R were determined using quantitative real-time PCR and Western blotting, respectively. The NF-κB-DNA binding activity in renal cortex was measured by Electrophoretic mobility shift assay (EMSA). Results As compared with LZ rats, ZDF rats had higher blood pressure, impaired natriuresis and diuresis, accompanied with higher levels of oxidative stress and inflammation. Furthermore, AT1R expression was higher in renal cortex from ZDF rats; candesartan induced natriresis and diuresis, which was augmented in ZDF rats. Treatment with PDTC lowered blood pressure and improved diuretic and natriuretic effects in ZDF rats; meanwhile, the increased oxidative stress and inflammation were reduced; the increased AT1R expression and augmented candesartan-mediated natriuresis and diuresis were recoverd in ZDF rats. Our further study investigated the mechanisms of PDTC on AT1R receptor expression. It resulted that PDTC inhibited NF-κB translocation from cytosol to nucleus, inhibited binding of NF-κB with AT1R promoter, therefore, reduced AT1R expression and function. Conclusions Our present study indicates blockade of NF-κB, via inhibition of binding of NF-κB with AT1R promoter, reduces renal AT1R expression and function, improves oxidative stress and inflammatory/anti-inflammatory balance, therefore, lowers blood pressure and recovers renal function in ZDF rats. Electronic supplementary material The online version of this article (doi:10.1186/s12933-015-0239-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hao Luo
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Xinquan Wang
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Jialiang Wang
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Caiyu Chen
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Na Wang
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Zaicheng Xu
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Shuo Chen
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
| | - Chunyu Zeng
- The Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, PR China. .,Chongqing Institute of Cardiology, Chongqing, PR China.
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Abdelhamid G, El-Kadi AOS. Buthionine sulfoximine, an inhibitor of glutathione biosynthesis, induces expression of soluble epoxide hydrolase and markers of cellular hypertrophy in a rat cardiomyoblast cell line: roles of the NF-κB and MAPK signaling pathways. Free Radic Biol Med 2015; 82:1-12. [PMID: 25614461 DOI: 10.1016/j.freeradbiomed.2015.01.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 01/09/2015] [Accepted: 01/10/2015] [Indexed: 01/04/2023]
Abstract
Evidence suggests that upregulation of soluble epoxide hydrolase (sEH) is associated with the development of myocardial infarction, dilated cardiomyopathy, cardiac hypertrophy, and heart failure. However, the upregulation mechanism is still unknown. In this study, we treated H9C2 cells with buthionine sulfoximine (BSO) to explore whether oxidative stress upregulates sEH gene expression and to identify the molecular and cellular mechanisms behind this upregulatory response. Real-time PCR and Western blot analyses were used to measure mRNA and protein expression, respectively. We demonstrated that BSO significantly upregulated sEH at mRNA levels in a concentration- and time-dependent manner, leading to a significant increase in the cellular hypertrophic markers, atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP). Furthermore, BSO significantly increased the cytosolic phosphorylated IκB-α and translocation of NF-κB p50 subunits, as measured by Western blot analysis. This level of translocation was paralleled by an increase in the DNA-binding activity of NF-κB P50 subunits. Moreover, our results demonstrated that pretreatment with the NF-κB inhibitor PDTC significantly inhibited BSO-mediated induction of sEH and cellular hypertrophic marker gene expression in a dose-dependent manner. Additionally, mitogen-activated protein kinases (MAPKs) were transiently phosphorylated by BSO treatment. To understand further the role of MAPKs pathway in BSO-mediated induction of sEH mRNA, we examined the role of extracellular signal-regulated kinase (ERK), c-JunN-terminal kinase (JNK), and p38 MAPK. Indeed, treatment with the MEK/ERK signal transduction inhibitor, PD98059, partially blocked the activation of IκB-α and translocation of NF-κB p50 subunits induced by BSO. Moreover, pretreatment with MEK/ERK signal transduction inhibitors, PD98059 and U0126, significantly inhibited BSO-mediated induction of sEH and cellular hypertrophic marker gene expression. These results clearly demonstrated that the NF-κB signaling pathway is involved in BSO-mediated induction of sEH gene expression, and appears to be associated with the activation of the MAPK pathway. Furthermore, our findings provide a strong link between sEH-induced cardiac dysfunction and involvement of NF-κB in the development of cellular hypertrophy.
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Affiliation(s)
- Ghada Abdelhamid
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2N8
| | - Ayman O S El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2N8.
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Duan JL, Yin J, Ren WK, Wu MM, Chen S, Cui ZJ, Wu X, Huang RL, Li TJ, Yin YL. Pyrrolidine dithiocarbamate restores gastric damages and suppressive autophagy induced by hydrogen peroxide. Free Radic Res 2015; 49:210-8. [PMID: 25471085 DOI: 10.3109/10715762.2014.993627] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
It is well known that gastric barrier is very important for protecting host from various insults. Simultaneously, autophagy serving as a prominent cytoprotective and survival pathway under oxidative stress conditions is being increasingly recognized. Thus, this study was conducted for investigating the effect of pyrrolidine dithiocarbamate (PDTC) on gastric barrier function and autophagy under oxidative stress induced by intragastric administration of hydrogen peroxide (H2O2). The gastric tight junction proteins [zonula occludens-1 (ZO1), occludin, and claudin1], autophagic proteins [microtubule-associated protein light chain 3I(LC3I), LC3II, and beclin1], and nuclear factor kappa B (NF-κB) signaling pathway (p65 and IκB kinase α/β) were determined by Western blot. The results showed that H2O2 exposure disturbed gastric barrier function with decreased expression of ZO1, occludin, and claudin1, and reduced gastric autophagy with decreased conversion of LC3I into LC3II in mice. However, treatment with PDTC restored these adverse effects evidenced by increased expression of ZO1 and claudin1 and increased conversion of LC3I into LC3II. Meanwhile, H2O2 exposure decreased normal human gastric epithelial mucosa cell line (GES-1) viability in a concentration-dependent way. However, after being exposed to H2O2, GES-1 exhibited autophagic response which was inconsistent with our in vivo results in mice, while PDTC failed to decrease autophagy in GES-1 induced by H2O2. Simultaneously, the beneficial effect of PDTC on gastric damage and autophagy in mice might be independent of inhibition of NF-κB. In conclusion, PDTC treatment restores gastric damages and reduced autophagy induced by H2O2. Therefore, PDTC may serve as a potential adjuvant therapy for gastric damages.
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Affiliation(s)
- J L Duan
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences , Changsha, Hunan , P. R. China
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Bhat OM, Kumar PU, Giridharan NV, Kaul D, Kumar MJM, Dhawan V. Interleukin-18-induced atherosclerosis involves CD36 and NF-κB crosstalk in Apo E-/- mice. J Cardiol 2014; 66:28-35. [PMID: 25475966 DOI: 10.1016/j.jjcc.2014.10.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/15/2014] [Accepted: 10/06/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Interleukin (IL)-18 is a pleotropic cytokine involved in various inflammatory disorders. The transcription factor, nuclear factor kappa-B (NF-κB), is thought to play an important role in IL-18 signaling. The present study proposes a novel role for IL-18 in cholesterol efflux and plaque stability and demonstrates that pyrrolidine dithiocarbamate (PDTC), a NF-κB inhibitor blocks IL-18 signaling in apolipoprotein (Apo) E-/- mice. METHODS Three groups of normal chow-diet-fed, male Apo E-/- mice, aged 12 weeks (n=6/group) were employed: Gp I, PBS (2mo); Gp II, recombinant (r)IL-18 (1mo) followed by PBS (1mo); Gp III, rIL-18 (1mo) followed by PDTC (1mo). RESULTS Significantly augmented expression of IL-18 receptor (R)α by fluorescence-activated cell sorting analysis and plasma IL-18 was observed in Gp II. There was a significant increase in total cholesterol and low-density lipoprotein cholesterol whereas high-density lipoprotein cholesterol was significantly decreased in Gp II. However, this pattern was reversed in Gp III. Significantly augmented mRNA expression of IL-18, CD36, matrix metalloproteinase (MMP)-9, and NF-κB was observed in Gp II but liver X receptor alpha (LXR-α) gene was significantly reduced. A significant increase in frequency of atherosclerotic lesions was observed in Gp II animals, whereas there was a significant decrease in the Gp III. CONCLUSION IL-18 administration initiates inflammatory cascade by binding with IL-18 Rα via NF-κB which is involved in progression and destabilization of atherosclerotic plaques in Apo E-/- mice. This study also reveals that NF-κB blockade with PDTC, blocks IL-18 signaling through down-regulation of IL-18, IL-18 Rα, CD36, and MMP-9, thus reducing inflammation and restoring plaque instability via upregulation of LXR-α.
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Affiliation(s)
- Owais Mohammad Bhat
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - P Uday Kumar
- National Centre for Laboratory Animal Sciences (NCLAS), Hyderabad, Department of Histopathology, National Institute of Nutrition (NIN), Hyderabad, India
| | - N V Giridharan
- Amrita School of Nanosciences & Molecular Medicine, Amrita Institute of Medical Sciences, Amrita Viswavidyapeedham, Kochi, Kerala, India
| | - Deepak Kaul
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - M J Mahesh Kumar
- Animal House, Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
| | - Veena Dhawan
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
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