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Zhao Z, Wang H, Li X, Hou J, Yang Y, Li H. Comprehensive analysis of DNA methylation for periodontitis. Int J Implant Dent 2022; 8:22. [PMID: 35491409 PMCID: PMC9058047 DOI: 10.1186/s40729-022-00420-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 04/11/2022] [Indexed: 11/26/2022] Open
Abstract
Background Periodontitis is an infectious disease, and a risk factor for peri-implantitis that could result in the implant loss. DNA methylation has an essential role in the etiology and pathogenesis of inflammatory disease. However, there is lack of study on methylation status of genes in periodontitis. This study sought to explore the gene methylation profiling microarray in periodontitis. Methods Through searching in the Gene Expression Omnibus database, a gene methylation profiling data set GSE173081 was identified, which included 12 periodontitis samples and 12 normal samples, respectively. Thereafter, the data of GSE173081 was downloaded and analyzed to determined differentially methylated genes (DMGs), which then were used to perform Gene Ontology analysis and pathway enrichment analyses through online database. In addition, the DMGs were applied to construct the protein–protein interaction (PPI) network information, predict the hub genes in pathology of periodontitis. Results In total 668 DMGs were sorted and identified from the data set, which included 621 hypo-methylated genes and 47 hyper-methylated genes. Through the function and ontology analysis, these 668 genes are mainly classified into intracellular signaling pathway, cell components, cell–cell interaction, and cellular behaviors. The pathway analysis showed that the hypo-methylated genes were mostly enriched in the pathway of cGMP–PKG signaling pathway; RAF/MAP kinase; PI3K–Akt signaling pathway, while hyper-methylated genes were mostly enriched in the pathway of bacterial invasion of epithelial cells; sphingolipid signaling pathway and DCC mediated attractive signaling. The PPI network contained 630 nodes and 1790 interactions. Moreover, further analysis identified top 10 hub genes (APP; PAX6; LPAR1; WNT3A; BMP2; PI3KR2; GATA4; PLCB1; GATA6; CXCL12) as central nodes that are involved in the immune system and the inflammatory response. Conclusions This study provides comprehensive information of methylation status of genes to the revelation of periodontitis pathogenesis that may contribute to future research on periodontitis. Supplementary Information The online version contains supplementary material available at 10.1186/s40729-022-00420-8.
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Wu X, Pu L, Chen W, Zhao Q, Wu G, Li D, Zhu H. LY294002 attenuates inflammatory response in endotoxin-induced uveitis by downregulating JAK3 and inactivating the PI3K/Akt signaling. Immunopharmacol Immunotoxicol 2022; 44:510-518. [PMID: 35344456 DOI: 10.1080/08923973.2022.2055565] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
CONTEXT Uveitis is a prevalent inflammatory eye disease that damages the vision of patients and even leads to blindness. LY294002, an inhibitor of PI3K, was reported to suppress the inflammation and alleviate the progression of many diseases. However, the function of LY294002 in uveitis is unclear. OBJECTIVE This study aimed to explore the function of LY294002 in endotoxin-induced uveitis (EIU). MATERIALS AND METHODS EIU rat models were established via a single intravitreal injection of LPS. At 24 h after LPS injection, the rats received LY294002 treatment for 14 days. The histopathology was observed by H&E staining. The concentration of proinflammatory cytokines in aqueous humor was tested by ELISA. The expression of proinflammatory cytokines in the iris ciliary body (ICB) and retina of EIU rats were detected by RT-qPCR. JAK3, PI3K, and Akt expression were assessed by RT-qPCR and western blotting. Translocation of Akt in rat retinal Müller cells (rMC-1) was evaluated by immunofluorescence staining. RESULTS LY294002 alleviated ocular inflammation and decreased inflammatory cell infiltration in the anterior chamber, iris, ciliary body, vitreous cavity, and retina of EIU rats. LY294002 decreased the concentration of proinflammatory cytokines INF-γ, IL-17, IL-6, TNF-α, and IL-1β in aqueous humor and their expression in the ICB and retina of EIU rats. LY294002 downregulated JAK3 expression in EIU rats. LY294002 inhibited p-PI3K and p-Akt expression in EIU rats and restrained Akt translocation from cytoplasm to cell membrane in LPS-treated rMC-1 cells. CONCLUSION LY294002 ameliorates inflammation in EIU by downregulating JAK3 and inactivating the PI3K/Akt signaling.
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Affiliation(s)
- Xinyang Wu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lijun Pu
- Department of Ophthalmology, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
| | - Wei Chen
- Department of Ophthalmology, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
| | - Qi Zhao
- Department of Ophthalmology, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
| | - Geping Wu
- Institute of Translational Medicine, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
| | - Di Li
- Institute of Translational Medicine, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
| | - Hongyan Zhu
- Institute of Translational Medicine, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China
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Pulukool SK, Srimadh Bhagavatham SK, Kannan V, Parim B, Challa S, Karnatam V, V.M DD, Ahmad Mir I, Sukumar P, Venkateshan V, Sharma A, Sivaramakrishnan V. Elevated ATP, cytokines and potential microglial inflammation distinguish exfoliation glaucoma from exfoliation syndrome. Cytokine 2022; 151:155807. [DOI: 10.1016/j.cyto.2022.155807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 12/19/2021] [Accepted: 01/11/2022] [Indexed: 12/27/2022]
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Sharma N, Khajuria V, Gupta S, Kumar C, Sharma A, Lone NA, Paul S, Meena SR, Ahmed Z, Satti NK, Verma MK. Dereplication Based Strategy for Rapid Identification and Isolation of a Novel Anti-inflammatory Flavonoid by LCMS/MS from Colebrookea oppositifolia. ACS OMEGA 2021; 6:30241-30259. [PMID: 34805658 PMCID: PMC8600527 DOI: 10.1021/acsomega.1c01837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Colebrookea oppositifolia is a folkloric medicinal plant, well known for its tremendous medicinal properties such as curing epilepsy, ulcers, and urinary problems. The aim of the present study was to apply the dereplication strategy on the ethanol extract of C. oppositifolia with potent anti-inflammatory activity for the rapid identification and isolation of novel bioactive molecules to aid the drug discovery process. An integrated approach using liquid chromatography-mass spectrometry (LCMS) followed by preparative high-performance liquid chromatography (HPLC) was used for the isolation of potent molecules from the anti-inflammatory extract of C. oppositifolia . Purity of the compounds (>98.5%) was established by HPLC, and identification was carried out by NMR and ESI-MS. 5,6,7-Trihydroxyflavone-3-O-glucuronide methyl ester (compound III) isolated from C. oppositifolia was extensively studied for anti-inflammatory potential in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells and the mice model. Compound III significantly repressed various proinflammatory mediators and upregulated the release of anti-inflammatory cytokine IL-10. Compound III reduced inflammation when studied for parameters such as the phagocytic index, carrageenan-induced paw edema in mice, and effect on organ weight. It reduced inflammation in a dose-dependent manner both in vitro and in vivo. Further molecular insights into the study revealed that compound III blocks the phosphorylation of I kappa b kinase α/β (IKKα/β), IκBα, and nuclear factor kB p65 (NF-κBp65) which is a key controller of inflammation, thereby showing anti-inflammatory potential. Hence, this study permits further investigation to develop compound III as an anti-inflammatory drug.
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Affiliation(s)
- Neha Sharma
- Natural
Product Chemistry Division, Analytical Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Vidushi Khajuria
- Inflammation
Pharmacology Division, CSIR-Indian Institute
of Integrative, Jammu 180001, India
- AcSIR:
Academy of Scientific and Innovative Research, Jammu 180006, India
| | - Shilpa Gupta
- Inflammation
Pharmacology Division, CSIR-Indian Institute
of Integrative, Jammu 180001, India
- AcSIR:
Academy of Scientific and Innovative Research, Jammu 180006, India
| | - Chetan Kumar
- Natural
Product Chemistry Division, Analytical Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Anjana Sharma
- AcSIR:
Academy of Scientific and Innovative Research, Jammu 180006, India
- PK-PD
and Toxicology Division, CSIR-Indian Institute
of Integrative Medicine, Jammu 180006, India
| | - Nazir Ahmad Lone
- AcSIR:
Academy of Scientific and Innovative Research, Jammu 180006, India
- PK-PD
and Toxicology Division, CSIR-Indian Institute
of Integrative Medicine, Jammu 180006, India
| | - Satya Paul
- Department
of Chemistry, University of Jammu, Jammu 180006, India
| | - Siya Ram Meena
- Genetic Resource
& Agrotech. Division, CSIR-Indian Institute
of Integrative Medicine, Jammu 180001, India
| | - Zabeer Ahmed
- Inflammation
Pharmacology Division, CSIR-Indian Institute
of Integrative, Jammu 180001, India
- AcSIR:
Academy of Scientific and Innovative Research, Jammu 180006, India
| | - Naresh Kumar Satti
- Natural
Product Chemistry Division, Analytical Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Mahendra Kumar Verma
- Natural
Product Chemistry Division, Analytical Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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Anti-Inflammatory and Chondroprotective Effects of Vanillic Acid and Epimedin C in Human Osteoarthritic Chondrocytes. Biomolecules 2020; 10:biom10060932. [PMID: 32575510 PMCID: PMC7356262 DOI: 10.3390/biom10060932] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 01/15/2023] Open
Abstract
In osteoarthritis (OA), inhibition of excessively expressed pro-inflammatory cytokines in the OA joint and increasing the anabolism for cartilage regeneration are necessary. In this ex-vivo study, we used an inflammatory model of human OA chondrocytes microtissues, consisting of treatment with cytokines (interleukin 1β (IL-1β)/tumor necrosis factor α (TNF-α)) with or without supplementation of six herbal compounds with previously identified chondroprotective effect. The compounds were assessed for their capacity to modulate the key catabolic and anabolic factors using several molecular analyses. We selectively investigated the mechanism of action of the two most potent compounds Vanillic acid (VA) and Epimedin C (Epi C). After identification of the anti-inflammatory and anabolic properties of VA and Epi C, the Ingenuity Pathway Analysis showed that in both treatment groups, osteoarthritic signaling pathways were inhibited. In the treatment group with VA, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling was inhibited by attenuation of the nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor alpha (IκBα) phosphorylation. Epi C showed a significant anabolic effect by increasing the expression of collagenous and non-collagenous matrix proteins. In conclusion, VA, through inhibition of phosphorylation in NF-κB signaling pathway and Epi C, by increasing the expression of extracellular matrix components, showed significant anti-inflammatory and anabolic properties and might be potentially used in combination to treat or prevent joint OA.
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Zheng N, Sun L, Pang G, Zha X, Niu W, Tan L, Zhang H, Bai H. Chlamydia muridarum infection induces CD4+ T cells apoptosis via PI3K/AKT signal pathway. Pathog Dis 2020; 77:5492259. [PMID: 31107947 DOI: 10.1093/femspd/ftz029] [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] [Received: 02/09/2019] [Accepted: 05/17/2019] [Indexed: 11/12/2022] Open
Abstract
Apoptosis is essential for the homeostatic control of the lymphocytes number during the development of an immune response to an invasive microorganism. CD4+ T cells play a major role in homeostasis of the immune system and are sufficient to confer protection against Chlamydia muridarum (Cm) infection in mice. The present study demonstrated that phosphatidylinositol 3-kinase (PI3K) p110δ mRNA and phosphorylation of protein kinase B (p-AKT) level were significantly increased in lung cells and spleen cells at day 3 and day 7 post-infection, p-AKT level was inhibited when adding PI3K inhibitor LY294002. Moreover, Cm infection induced high levels of IL-2/IL-2Rα in CD4+ T cells, which may relate to PI3K/AKT signal pathway activation. We observed that Cm infection significantly induced apoptosis of CD4+ T cells. The related apoptosis proteins Bcl-2 and Mcl-1 uneven expression levels were induced in CD4+ T cells by Cm infection. These findings provided in vivo and in vitro evidence that Cm infection induces CD4+ T cells apoptosis possibly via PI3K/AKT signal pathway.
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Affiliation(s)
- Ningbo Zheng
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Lida Sun
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Gaoju Pang
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Xiaoyu Zha
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Wenhao Niu
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Lu Tan
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Hong Zhang
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Hong Bai
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, No.22 Qixiangtai Road, Heping District, Tianjin, 300070, China
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Pregnancy-Associated Plasma Protein A Induces Inflammatory Cytokine Expression by Activating IGF-I/PI3K/Akt Pathways. Mediators Inflamm 2019; 2019:8436985. [PMID: 31582904 PMCID: PMC6754940 DOI: 10.1155/2019/8436985] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/10/2019] [Accepted: 08/13/2019] [Indexed: 12/12/2022] Open
Abstract
Pregnancy-associated plasma protein A (PAPP-A) was previously reported to be an inflammatory biomarker and a prognostic marker of acute coronary syndrome (ACS) and involved in the process of atherosclerosis and plaque rupture. However, the role of PAPP-A in inflammation is poorly understood. In this study, we aimed to investigate the role of PAPP-A in macrophage activation and inflammatory cytokine production. RAW264.7 macrophages were treated with or without PAPP-A. Reverse-transcriptase quantitative real-time PCR (RT-qPCR) and Western blot were performed to detect gene and protein expressions. The concentration of monocyte chemoattractant protein-1 (MCP-1), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in culture supernatants was determined by ELISA. Results showed that PAPP-A significantly stimulated the expression of MCP-1, TNF-α, and IL-6 at both transcriptional and translational levels in a dose-dependent and time-dependent manner. The secretion of these inflammatory cytokines by macrophages was also increased after PAPP-A treatment. Moreover, PAPP-A activated the IGF-I/PI3K/Akt signaling pathway in macrophages. The PAPP-A-mediated upregulation of MCP-1, TNF-α, and IL-6 mRNA and protein levels were strongly inhibited by PI3K inhibitors or IGF-IR siRNA, indicating that the upregulation of MCP-1, TNF-α, and IL-6 could involve the IGF-I/PI3K/Akt pathway. Together, this study demonstrates that PAPP-A activates the macrophage signaling pathway (IGF-I/PI3K/Akt), which drives the expression and production of inflammatory cytokines known to contribute to the initiation and progression of ACS. These findings indicate that PAPP-A may play a proinflammatory role in the pathophysiology of ACS and serve as a potential therapeutic target.
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Reduction of Real-Time Imaging of M1 Macrophage Chemotaxis toward Damaged Muscle Cells is PI3K-Dependent. Antioxidants (Basel) 2018; 7:antiox7100138. [PMID: 30297636 PMCID: PMC6210562 DOI: 10.3390/antiox7100138] [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: 08/07/2018] [Revised: 09/25/2018] [Accepted: 10/04/2018] [Indexed: 11/16/2022] Open
Abstract
Macrophages migrate and invade into damaged muscle rapidly and are important for muscle repair and subsequent regeneration. The exact cellular and biological events that cause macrophage migration toward injured muscle are not completely understood. In this study, the effect of macrophage differentiation on the chemotactic capability to invade local damaged muscle was investigated using an in vitro model of muscle injury. We used C2C12 cell myoblasts and J774 cell macrophages, and the "killed-C2C12" cells were combined with live C2C12 cells as a partially damaged muscle model. The cultured J774 cells, with or without lipopolysaccharide (LPS), were treated with Ly294002 (Ly), which is an inhibitor of phosphoinositide 3-kinase (PI3K). In order to evaluate the polarization effect of LPS stimulation on J774 cells, expression of cell surface Toll-like receptor 4 (TLR4), CD11c and CCR2, and expression of F-actin intensity, were analyzed by flow cytometry. The real-time horizontal chemotaxis assay of J774 cells was tested using the TAXIScan device. The expressions of TLR4, CD11c, and F-actin intensity in LPS-treated cells were significantly higher than those in Ctrl cells. In LPS-treated cells, the chemotactic activity toward damaged muscle cells completely disappeared. Moreover, the reduced chemotaxis depended far more on directionality than velocity. However, Ly treatment reversed the reduced chemotactic activity of the LPS-treated cells. In addition, cell-adhesion and F-actin intensity, but not CCR2 expression, in LPS-treated cells, was significantly reduced by Ly treatment. Taken together, our results suggest that the PI3K/Akt activation state drives migration behavior towards damaged muscle cells.
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Eräsalo H, Hämäläinen M, Leppänen T, Mäki-Opas I, Laavola M, Haavikko R, Yli-Kauhaluoma J, Moilanen E. Natural Stilbenoids Have Anti-Inflammatory Properties in Vivo and Down-Regulate the Production of Inflammatory Mediators NO, IL6, and MCP1 Possibly in a PI3K/Akt-Dependent Manner. JOURNAL OF NATURAL PRODUCTS 2018; 81:1131-1142. [PMID: 29726680 DOI: 10.1021/acs.jnatprod.7b00384] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Stilbenoids are a group of polyphenolic compounds found in plants, trees, berries, and nuts. Stilbenoids have been shown to serve an antimicrobial and antifungal function in plants. There is also evidence that as a part of the human diet, stilbenoids play an important role as antioxidants and may have anti-inflammatory effects. The PI3K/Akt pathway is a well-characterized signaling pathway controlling cellular functions involved in growth and cell cycle and in metabolism. There is also increasing evidence to show the involvement of this pathway in the regulation of inflammatory responses. In the present study, an attempt was made to investigate the anti-inflammatory properties of the naturally occurring stilbenoids pinosylvin (1), monomethylpinosylvin (2), resveratrol (3), pterostilbene (4), piceatannol (5), and rhapontigenin (6). Glycosylated derivatives of piceatannol and rhapontigenin, namely, astringin (7) and rhaponticin (8), respectively, were also investigated. In addition to the natural stilbenoids, pinosylvin derivatives (9-13) were synthesized and subjected to the testing of their effects on the PI3K/Akt pathway in inflammatory conditions. The investigated natural stilbenoids (except the glycosylated derivatives) were found to down-regulate Akt phosphorylation, which is a well-acknowledged marker for PI3K activity. It was also found that all of the studied natural stilbenoids had anti-inflammatory effects in vitro. The three most potent stilbenoids, piceatannol, pinosylvin, and pterostilbene, were selected for in vivo testing and were found to suppress inflammatory edema and to down-regulate the production of inflammatory mediators IL6 and MCP1 in carrageenan-induced paw inflammation in mice. When compared to the commercial PI3K inhibitor LY294002, the anti-inflammatory effects appeared to be quite similar. The results reveal hitherto unknown anti-inflammatory effects of natural stilbenoids and suggest that those effects may be mediated via inhibition of the PI3K/Akt pathway.
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Affiliation(s)
- Heikki Eräsalo
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
| | - Mari Hämäläinen
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
| | - Tiina Leppänen
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
| | - Ilari Mäki-Opas
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
| | - Mirka Laavola
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
| | - Raisa Haavikko
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 Helsinki , Finland
| | - Jari Yli-Kauhaluoma
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 Helsinki , Finland
| | - Eeva Moilanen
- The Immunopharmacology Research Group, Faculty of Medicine and Life Sciences , University of Tampere and Tampere University Hospital , FI-33014 Tampere , Finland
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Khajuria V, Gupta S, Sharma N, Tiwari H, Bhardwaj S, Dutt P, Satti N, Nargotra A, Bhagat A, Ahmed Z. Kaempferol-3-o-β- d -glucuronate exhibit potential anti-inflammatory effect in LPS stimulated RAW 264.7 cells and mice model. Int Immunopharmacol 2018; 57:62-71. [DOI: 10.1016/j.intimp.2018.01.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 01/18/2018] [Accepted: 01/24/2018] [Indexed: 11/28/2022]
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11
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Jiang Y, Hao S, Tian W, Gao B, Zhang X, Zhang S, Guo L, Yan J, Luo D. PI3K inhibitors IC87114 inhibits the migration and invasion of thyroid cancer cell in vitro and in vivo. J Cell Biochem 2018; 119:4097-4102. [DOI: 10.1002/jcb.26604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 12/01/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Yan Jiang
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Shuai Hao
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Wuguo Tian
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Bo Gao
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Xiaohua Zhang
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Shu Zhang
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Lingji Guo
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Jie Yan
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
| | - Donglin Luo
- Department of Breast, Thyroid SurgeryResearch Institute of Surgery, Daping Hospital, Third Military Medical UniversityChongqingChina
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Zhang Y, Li K, Ying Y, Chen B, Hao K, Chen B, Zheng Y, Lyu J, Tong X, Chen X, Wang Y, Zhan Z, Zhang W, Wang Z. C21 steroid-enriched fraction refined from Marsdenia tenacissima inhibits hepatocellular carcinoma through the coordination of Hippo-Yap and PTEN-PI3K/AKT signaling pathways. Oncotarget 2017; 8:110576-110591. [PMID: 29299170 PMCID: PMC5746405 DOI: 10.18632/oncotarget.22833] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/13/2017] [Indexed: 12/22/2022] Open
Abstract
Marsdenia tenacissimae extraction (MTE), a traditional herbal medicine, has exhibited anti-tumor effects on a variety of cancers. However, its effectiveness and the mechanism of action in Hepatocellular carcinoma (HCC) has not been fully understood. In the present study, we demonstrate that C21 steroid-enriched fraction from MTE, which contains five main C21 steroids (FR5) exhibits obvious pharmacological activities on HCC cells in vitro and in vivo. FR5 induces apoptosis and inhibits proliferation and migration of HepG2 and Bel7402 cells in a dose and time dependent manner. Furthermore, in HCC cells, we found that FR5 inhibits Hippo pathway, leading to inactivation of YAP and increase of PTEN. Enhanced PTEN results in the inhibition of PI3K/AKT signaling pathway, inhibiting cell proliferation by FR5 and FR5-induced apoptosis. Moreover, it was proved that FR5 treatment could inhibit tumor growth in a HCC xenograft mouse model, and immunohistochemistry results showed FR5 treatment resulted in down-regulation of Bcl-2 and YAP, and up-regulation of PTEN and PI3K. Taken together, we found that FR5 effectively inhibits proliferation and induces apoptosis of HCC cells through coordinated inhibition of YAP in the Hippo pathway and AKT in the PI3K-PTEN-mTOR pathway, and suggest FR5 as a potential therapy for HCC.
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Affiliation(s)
- Yu Zhang
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Kaiqiang Li
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Youmin Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bingyu Chen
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Ke Hao
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Boxu Chen
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Yu Zheng
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Jianxin Lyu
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Xiangming Tong
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Xiaopan Chen
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Ying Wang
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Zhajun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wei Zhang
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Zhen Wang
- Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
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13
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Chao W, Deng JS, Huang SS, Li PY, Liang YC, Huang GJ. 3, 4-dihydroxybenzalacetone attenuates lipopolysaccharide-induced inflammation in acute lung injury via down-regulation of MMP-2 and MMP-9 activities through suppressing ROS-mediated MAPK and PI3K/AKT signaling pathways. Int Immunopharmacol 2017. [PMID: 28644965 DOI: 10.1016/j.intimp.2017.06.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
3, 4-Dihydroxybenzalacetone (DBL) is a constituent of Phellinus linteus. This study demonstrated the protective effect of DBL on lipopolysaccharide (LPS)-induced acute lung injuries in mice. Pretreatment with DBL significantly improved LPS-induced histological alterations in lung tissues. In addition, DBL markedly reduced the total cell number, the leukocytes, the protein concentrations, and decreased the release of nitrite, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 and the activities of matrix metalloproteinase (MMP)-2 and -9 in the bronchoalveolar lavage fluid. DBL also inhibited the W/D ratio and myeloperoxidase activity in the lung tissues. Western blot analysis indicated DBL efficiently blocked the protein expressions of inducible nitric oxide synthase, cyclooxygenase-2, MMP-2, MMP-9, and the phosphorylation of mitogen-activated protein kinase (MAPK), phosphoinositide-3-kinase (PI3K), AKT, Toll-like receptor 4 (TLR4) and nuclear factor (NF)-κB. Moreover, DBL enhanced the expression of anti-oxidant proteins, such as superoxide dismutase (SOD), catalase and glutathione peroxidase (GPx). Based on our results, DBL might be a potential target for attenuating tissue oxidative injuries and nonspecific pulmonary inflammation.
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Affiliation(s)
- Wei Chao
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan
| | - Jeng-Shyan Deng
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Shyh-Shyun Huang
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan
| | - Pei-Ying Li
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan
| | - Yu-Chia Liang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan
| | - Guan-Jhong Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
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14
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Kuuliala K, Kuuliala A, Hämäläinen M, Koivuniemi R, Kautiainen H, Moilanen E, Repo H, Leirisalo-Repo M. Impaired Akt Phosphorylation in Monocytes of Patients with Rheumatoid Arthritis. Scand J Immunol 2017; 85:155-161. [PMID: 27992958 DOI: 10.1111/sji.12521] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/10/2016] [Indexed: 12/13/2022]
Abstract
It has been proposed that the Akt kinase pathway provides a regulatory mechanism to limit the inflammatory response. We examined the activation of Akt upon lipopolysaccharide (LPS) challenge in monocytes of patients with rheumatoid arthritis (RA) and correlated it with disease activity. Twelve subjects with recent-onset, DMARD-naïve RA, thirteen patients with chronic, DMARD therapy-non-responding RA and 27 healthy volunteers provided whole blood samples for phosphospecific flow cytometric measurement of unstimulated and LPS-stimulated Akt phosphorylation at serine 473 in monocytes, determined in relative fluorescence units (RFU). Activation capability, that is responsiveness of monocytes, was determined as the difference between stimulated and unstimulated samples and compared between groups using Mann-Whitney test. CRP and ESR, swollen and tender joint counts, patients' global assessment of disease activity, DAS28 score and plasma IL-6 determined by ELISA were correlated with Akt activation using Spearman method. Median (interquartile range) Akt activation capability was significantly lower in DMARD-naïve (379 RFU [285, 432], P = 0.016) and even lower in DMARD-non-responding RA (258 RFU [213, 338], P < 0.001), compared to healthy controls (505 RFU[408, 639]) and showed a negative correlation with swollen joint count (r = -0.48, CI -0.78 to -0.05, P = 0.014), CRP (r = -0.42, CI -0.80 to -0.02, P = 0.039) and plasma IL-6 levels (r = -0.44, CI -0.65 to -0.17, P = 0.001). In conclusion, Akt activation capability of monocytes is low in early untreated RA and even lower in chronic, DMARD-non-responding RA, suggesting a role for Akt pathway in the pathogenesis of RA.
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Affiliation(s)
- K Kuuliala
- Bacteriology and Immunology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - A Kuuliala
- Bacteriology and Immunology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - M Hämäläinen
- The Immunopharmacology Research Group, University of Tampere School of Medicine and Tampere University Hospital, Tampere, Finland
| | - R Koivuniemi
- Rheumatology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - H Kautiainen
- Primary Health Care and General Practice, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.,Unit of Primary Health Care, Kuopio University Hospital, Kuopio, Finland
| | - E Moilanen
- The Immunopharmacology Research Group, University of Tampere School of Medicine and Tampere University Hospital, Tampere, Finland
| | - H Repo
- Bacteriology and Immunology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - M Leirisalo-Repo
- Rheumatology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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15
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The TLR4–NOS1–AP1 signaling axis regulates macrophage polarization. Inflamm Res 2016; 66:323-334. [DOI: 10.1007/s00011-016-1017-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 11/29/2016] [Accepted: 12/01/2016] [Indexed: 12/17/2022] Open
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16
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Liu H, Zhang J, Guo JL, Lin C, Wang ZW. Phosphoinositide 3-kinase inhibitor LY294002 ameliorates the severity of myosin-induced myocarditis in mice. Curr Res Transl Med 2016; 64:21-7. [DOI: 10.1016/j.retram.2016.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/20/2016] [Indexed: 12/16/2022]
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17
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Samadi AK, Bilsland A, Georgakilas AG, Amedei A, Amin A, Bishayee A, Azmi AS, Lokeshwar BL, Grue B, Panis C, Boosani CS, Poudyal D, Stafforini DM, Bhakta D, Niccolai E, Guha G, Vasantha Rupasinghe HP, Fujii H, Honoki K, Mehta K, Aquilano K, Lowe L, Hofseth LJ, Ricciardiello L, Ciriolo MR, Singh N, Whelan RL, Chaturvedi R, Ashraf SS, Shantha Kumara HMC, Nowsheen S, Mohammed SI, Keith WN, Helferich WG, Yang X. A multi-targeted approach to suppress tumor-promoting inflammation. Semin Cancer Biol 2015; 35 Suppl:S151-S184. [PMID: 25951989 PMCID: PMC4635070 DOI: 10.1016/j.semcancer.2015.03.006] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 12/15/2022]
Abstract
Cancers harbor significant genetic heterogeneity and patterns of relapse following many therapies are due to evolved resistance to treatment. While efforts have been made to combine targeted therapies, significant levels of toxicity have stymied efforts to effectively treat cancer with multi-drug combinations using currently approved therapeutics. We discuss the relationship between tumor-promoting inflammation and cancer as part of a larger effort to develop a broad-spectrum therapeutic approach aimed at a wide range of targets to address this heterogeneity. Specifically, macrophage migration inhibitory factor, cyclooxygenase-2, transcription factor nuclear factor-κB, tumor necrosis factor alpha, inducible nitric oxide synthase, protein kinase B, and CXC chemokines are reviewed as important antiinflammatory targets while curcumin, resveratrol, epigallocatechin gallate, genistein, lycopene, and anthocyanins are reviewed as low-cost, low toxicity means by which these targets might all be reached simultaneously. Future translational work will need to assess the resulting synergies of rationally designed antiinflammatory mixtures (employing low-toxicity constituents), and then combine this with similar approaches targeting the most important pathways across the range of cancer hallmark phenotypes.
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Affiliation(s)
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Scotland, UK
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematics and Physical Sciences, National Technical University of Athens, Athens, Greece
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates; Faculty of Science, Cairo University, Cairo, Egypt
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, College of Pharmacy, Larkin Health Sciences Institute, Miami, FL, United States
| | - Asfar S Azmi
- Department of Pathology, Wayne State Univeristy, Karmanos Cancer Center, Detroit, MI, USA
| | - Bal L Lokeshwar
- Department of Urology, University of Miami, Miller School of Medicine, Miami, FL, United States; Miami Veterans Administration Medical Center, Miami, FL, United States
| | - Brendan Grue
- Department of Environmental Science, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Carolina Panis
- Laboratory of Inflammatory Mediators, State University of West Paraná, UNIOESTE, Paraná, Brazil
| | - Chandra S Boosani
- Department of BioMedical Sciences, School of Medicine, Creighton University, Omaha, NE, United States
| | - Deepak Poudyal
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, Columbia, SC, United States
| | - Diana M Stafforini
- Huntsman Cancer Institute and Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Dipita Bhakta
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | | | - Gunjan Guha
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India
| | - H P Vasantha Rupasinghe
- Department of Environmental Sciences, Faculty of Agriculture and Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Nara, Japan
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Nara, Japan
| | - Kapil Mehta
- Department of Experimental Therapeutics, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Leroy Lowe
- Getting to Know Cancer, Truro, Nova Scotia, Canada.
| | - Lorne J Hofseth
- Department of Drug Discovery and Biomedical Sciences, South Carolina College of Pharmacy, University of South Carolina, Columbia, SC, United States
| | - Luigi Ricciardiello
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | | | - Neetu Singh
- Advanced Molecular Science Research Centre (Centre for Advanced Research), King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Richard L Whelan
- Department of Surgery, St. Luke's Roosevelt Hospital, New York, NY, United States
| | - Rupesh Chaturvedi
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - S Salman Ashraf
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
| | - H M C Shantha Kumara
- Department of Surgery, St. Luke's Roosevelt Hospital, New York, NY, United States
| | - Somaira Nowsheen
- Medical Scientist Training Program, Mayo Graduate School, Mayo Medical School, Mayo Clinic, Rochester, MN, United States
| | - Sulma I Mohammed
- Department of Comparative Pathobiology, Purdue University Center for Cancer Research, West Lafayette, IN, United States
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Scotland, UK
| | | | - Xujuan Yang
- University of Illinois at Urbana Champaign, Champaign, IL, United States
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18
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Chen Z, Liu H, Lei S, Zhao B, Xia Z. LY294002 prevents lipopolysaccharide‑induced hepatitis in a murine model by suppressing IκB phosphorylation. Mol Med Rep 2015; 13:811-6. [PMID: 26647861 DOI: 10.3892/mmr.2015.4574] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 07/03/2015] [Indexed: 11/06/2022] Open
Abstract
Although fulminant hepatitis represents a ubiquitous human health problem, there is a lack of effective therapeutic strategies that have few side‑effects and the precise mechanisms underlying fulminant hepatitis are not fully understood. Phosphoinositide 3‑kinase (PI3K) is a pivotal kinase known to regulate inflammatory responses in hepatic diseases. Although previous research indicates that PI3K is involved in cardiac diseases, including myocardial infarction, it currently remains unclear whether the inhibition of PI3K is essential for ameliorating the severity of lipopolysaccharide (LPS)‑induced hepatitis. The aim of the present study was to investigate whether pharmacological blockade of PI3K ameliorates the development of LPS‑induced murine acute hepatic injury. A murine model of LPS‑induced acute hepatic injury was used to investigate the therapeutic effect of the pan‑PI3K inhibitor, LY294002 on murine fulminant hepatitis and to investigate potential underlying mechanisms. The current report presents the in vivo role of LY294002 in protecting the mice from fulminant hepatitis. LY294002 was observed to exert significant protective effects on the liver by reducing the activities of alanine aminotransferase and aspartate aminotransferase, as well as by improving the histological architecture of the liver. In LPS‑induced hepatitis, treatment with LY294002 clearly inhibited intrahepatic synthesis of various disease‑relevant proinflammatory cytokines, including tumor necrosis factor‑α, interleukin (IL)‑6, IL‑1β and interferon‑γ. Furthermore, LY294002 was observed to significantly inhibit IκB phosphorylation in LPS‑injured mouse liver samples. Therefore, LY294002 may protect the liver from LPS‑induced injury by inhibition of the IκB‑nuclear factor κ‑light‑chain‑enhancer of activated B cell dependent signaling pathway. Thus, the current report provides evidence that LY294002 exerts potent effects against LPS‑induced hepatic injury, indicating its potential therapeutic value for the treatment of acute hepatitis.
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Affiliation(s)
- Zhize Chen
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Huimin Liu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Shaoqin Lei
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Bo Zhao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Zhongyuan Xia
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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