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Chougule PR, Sangaraju R, Patil PB, Qadri SSYH, Panpatil VV, Ghosh S, Mungamuri SK, Bhanoori M, Sinha SN. Effect of ethyl gallate and propyl gallate on dextran sulfate sodium (DSS)-induced ulcerative colitis in C57BL/6 J mice: preventive and protective. Inflammopharmacology 2023:10.1007/s10787-023-01254-5. [PMID: 37266812 DOI: 10.1007/s10787-023-01254-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/29/2023] [Indexed: 06/03/2023]
Abstract
OBJECTIVE AND DESIGN Inflammatory bowel disease (IBD) is an idiopathic inflammatory condition of the digestive system marked by oxidative stress, leukocyte infiltration, and elevation of inflammatory mediators. In this study, we demonstrate the protective effect of ethyl gallate (EG), a phytochemical, and propyl gallate (PG), an anti-oxidant, given through normal drinking water (DW) and copper water (CW) in various combinations, which had a positive effect on the amelioration of DSS-induced ulcerative colitis in C57BL/6 J mice. MATERIALS AND METHODS We successfully determined the levels of proinflammatory cytokines and anti-oxidant enzymes by ELISA, tracked oxidative/nitrosative stress (RO/NS) by in vivo imaging (IVIS) using L-012 chemiluminescent probe, disease activity index (DAI), and histopathological and morphometric analysis of colon in DSS-induced colitis in a model. RESULTS The results revealed that oral administration of ethyl gallate and propyl gallate at a dose of 50 mg/kg considerably reduced the severity of colitis and improved both macroscopic and microscopic clinical symptoms. The level of proinflammatory cytokines (TNF-α, IL-6, IL-1β, and IFN-γ) in colonic tissue was considerably reduced in the DSS + EG-treated and DSS + PG-treated groups, compared to the DSS alone-treated group. IVIS imaging of animals from the DSS + EG and DSS + PG-treated groups showed a highly significant decrease in RO/NS species relative to the DSS control group, with the exception of the DSS + PG/CW and DSS + EG + PG/CW-treated groups. We also observed lower levels of myeloperoxidase (MPO), nitric oxide (NO), and lipid peroxidation (LPO), and restored levels of GST and superoxide dismutase (SOD) in DSS + EG-DW/CW, DSS + PG/DW, and DSS + EG + PG/DW groups compared to DSS alone-treated group. In addition, we showed that the EG, PG, and EG + PG treatment significantly reduced the DAI score, and counteracted the body weight loss and colon shortening in mice compared to DSS alone-treated group. In this 21-day study, mice were treated daily with test substances and were challenged to DSS from day-8 to 14. CONCLUSION Our study highlights the protective effect of ethyl gallate and propyl gallate in various combinations which, in pre-clinical animals, serve as an anti-inflammatory drug against the severe form of colitis, indicating its potential for the treatment of IBD in humans. In addition, propyl gallate was investigated for the first time in this study for its anti-colitogenic effect with normal drinking water and reduced effect with copper water.
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Affiliation(s)
- Priyanka Raju Chougule
- Division of Food Safety, Indian Council of Medical Research - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India
- Department of Biochemistry, Osmania University, Hyderabad, Telangana, 500027, India
| | - Rajendra Sangaraju
- Division of Food Safety, Indian Council of Medical Research - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India
| | - Pradeep B Patil
- Animal Facility, ICMR - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India
| | - S S Y H Qadri
- Animal Facility, ICMR - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India
| | - Virendra V Panpatil
- Molecular Biology Division, National Institute of Nutrition-ICMR, Jamai-Osmania, Hyderabad, 500007, India
| | - Sudip Ghosh
- Molecular Biology Division, National Institute of Nutrition-ICMR, Jamai-Osmania, Hyderabad, 500007, India
| | - Sathish Kumar Mungamuri
- Division of Food Safety, Indian Council of Medical Research - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India
| | - Manjula Bhanoori
- Department of Biochemistry, Osmania University, Hyderabad, Telangana, 500027, India
| | - Sukesh Narayan Sinha
- Division of Food Safety, Indian Council of Medical Research - National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500007, India.
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Javaheri-Ghezeldizaj F, Alizadeh AM, Dehghan P, Ezzati Nazhad Dolatabadi J. Pharmacokinetic and toxicological overview of propyl gallate food additive. Food Chem 2023; 423:135219. [PMID: 37178593 DOI: 10.1016/j.foodchem.2022.135219] [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: 05/01/2021] [Revised: 12/10/2022] [Accepted: 12/12/2022] [Indexed: 05/15/2023]
Abstract
The progressive use of food additives in "ultra-processed" food has increased attention to them. Propyl gallate (PG) is an essential synthetic preservative that commonly used in food, cosmetics, and pharmacies as an antioxidant. This study aimed to outline the existing evidence on the toxicological studies of PG including its physicochemical properties, metabolism, and pharmacokinetics effects. The methods include updated searches for the relevant databases. The EFSA has evaluated the use of PG in food industry. It establishes an acceptable daily intake (ADI) of 0.5 mg/kg bw per day. Based on exposure assessment, it can be concluded that at the current level of use, PG is not of safety concern.
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Affiliation(s)
- Fatemeh Javaheri-Ghezeldizaj
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Adel Mirza Alizadeh
- Social Determinants of Health Research Center, Zanjan University of Medical Sciences, Zanjan, Iran; Department of Food Safety and Hygiene, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Parvin Dehghan
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Wang X, Chen K, Zhang X, Hu Y, Wang Z, Yin F, Liu X, Zhang J, Qin L, Zhou D. Effect of carbon chain length on the hydrolysis and transport characteristics of alkyl gallates in rat intestine. Food Funct 2021; 12:10581-10588. [PMID: 34614054 DOI: 10.1039/d1fo01732b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenolipids such as alkyl gallates (A-GAs) have been approved by food industry as non-toxic antioxidant additives. However, their digestion and absorption mechanisms in the intestine have not yet been clarified. In this research, the hydrolysis and transport characteristics of A-GAs with fatty alcohols of various chain lengths (C1:0, C2:0, C3:0, C4:0, C8:0, C12:0 and C16:0) were estimated by the everted-rat-gut-sac model (ERGSM) for the first time. High-performance liquid chromatography measurements proved that measurable peaks corresponding to methyl gallate (G-C1:0), ethyl gallate (G-C2:0), propyl gallate (G-C3:0) and butyl gallate (G-C4:0) were discovered in the serosal fluids, which showed the short-chain alkyl gallates can cross the membrane in the form of esters. Besides, all A-GAs were hydrolyzed to GA in the mucosal solution, which contributed evidently to the transport of GA across the membrane of the small intestine. Meanwhile, the hydrolysis rate of A-GAs and transport rate of GA initially increased and then decreased with the chain length, exhibiting a maximum for octyl gallate (G-C8:0). In general, all A-GAs have the behavior of sustained-release. In consequence, the production of A-GAs should be an effective method to extend action time and further increases biological activities of GA.
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Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Kefan Chen
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Xiumin Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yuanyuan Hu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zixu Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Fawen Yin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Xiaoyang Liu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jianghua Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Lei Qin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dayong Zhou
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
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Abstract
The title compound, propyl gallate (III), is an important substance popularly used in the food, cosmetic and pharmaceutical industries. Current chemical syntheses of this compound are based on the acylation supported by thionyl chloride, DIC/DMAP or Fischer esterification using a range of homogenous and heterogenous catalysts. In this paper, an efficient, green, straightforward, and economical method for synthesizing propyl gallate using potassium hydrogen sulfate, KHSO4, as the heterogenous acidic catalyst has been developed for the first time. In addition, this paper provides a comprehensive spectral dataset for the title compound, especially the new data on DEPT and 2D NMR (HSQC and HMBC) spectra which are not currently available in the literature.
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Sabir F, Katona G, Pallagi E, Dobó DG, Akel H, Berkesi D, Kónya Z, Csóka I. Quality-by-Design-Based Development of n-Propyl-Gallate-Loaded Hyaluronic-Acid-Coated Liposomes for Intranasal Administration. Molecules 2021; 26:molecules26051429. [PMID: 33800788 PMCID: PMC7961673 DOI: 10.3390/molecules26051429] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 12/13/2022] Open
Abstract
The present study aimed to develop n-propyl gallate (PG)-encapsulated liposomes through a novel direct pouring method using the quality-by-design (QbD) approach. A further aim was to coat liposomes with hyaluronic acid (HA) to improve the stability of the formulation in nasal mucosa. The QbD method was used for the determination of critical quality attributes in the formulation of PG-loaded liposomes coated with HA. The optimized formulation was determined by applying the Box–Behnken design to investigate the effect of composition and process variables on particle size, polydispersity index (PDI), and zeta potential. Physiochemical characterization, in vitro release, and permeability tests, as well as accelerated stability studies, were performed with the optimized liposomal formulation. The optimized formulation resulted in 90 ± 3.6% encapsulation efficiency, 167.9 ± 3.5 nm average hydrodynamic diameter, 0.129 ± 0.002 PDI, and −33.9 ± 4.5 zeta potential. Coated liposomes showed significantly improved properties in 24 h in an in vitro release test (>60%), in vitro permeability measurement (420 μg/cm2) within 60 min, and also in accelerated stability studies compared to uncoated liposomes. A hydrogen-peroxide-scavenging assay showed improved stability of PG-containing liposomes. It can be concluded that the optimization of PG-encapsulated liposomes coated with HA has great potential for targeting several brain diseases.
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Affiliation(s)
- Fakhara Sabir
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
| | - Gábor Katona
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
| | - Edina Pallagi
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
| | - Dorina Gabriella Dobó
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
| | - Hussein Akel
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
| | - Dániel Berkesi
- Faculty of Science and Informatics, Department of Applied & Environmental Chemistry, University of Szeged, H-6720 Szeged, Hungary; (D.B.); (Z.K.)
| | - Zoltán Kónya
- Faculty of Science and Informatics, Department of Applied & Environmental Chemistry, University of Szeged, H-6720 Szeged, Hungary; (D.B.); (Z.K.)
| | - Ildikó Csóka
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, H-6720 Szeged, Hungary; (F.S.); (G.K.); (E.P.); (D.G.D.); (H.A.)
- Correspondence: ; Tel.: +36-62-546-116
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Wei PL, Huang CY, Chang YJ. Propyl gallate inhibits hepatocellular carcinoma cell growth through the induction of ROS and the activation of autophagy. PLoS One 2019; 14:e0210513. [PMID: 30653551 PMCID: PMC6336332 DOI: 10.1371/journal.pone.0210513] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/23/2018] [Indexed: 12/19/2022] Open
Abstract
The poor prognosis of hepatocellular carcinoma (HCC) has been attributed to a high frequency of tumor metastasis and recurrence even after successful surgical resection. With less than 30% of patients benefiting from curative treatment, alternative treatment regimens for patients with advanced HCC are needed. Propyl gallate (PG), a synthetic antioxidant used in preserving food and medicinal preparations, has been shown to induce cancer cell death, but the anticancer effects of PG in HCC are unclear. In the present study, we demonstrated that PG inhibited HCC cell proliferation in vitro and in zebrafish models in vivo in a dose- and time-dependent manner. PG also induced cell apoptosis and increased the number of necrotic cells in a time- and dose-dependent manner as determined using a high-content analysis system. We found that PG also increased the intracellular levels of superoxide and reactive oxidative stress as well as the formation of autophagosomes and lysosomes. Regarding the molecular mechanism, PG did not alter the levels of autophagy-related 5 (ATG5), ATG5/12 or Beclin-1 but increased the rate of the LC3-I to LC3-II conversion, suggesting autophagy induction. PG exposure increased the levels of the pro-apoptotic proteins cleaved caspase-3, cleaved PARP, Bax, and Bad and a decreased level of the anti-apoptotic protein Bcl-2. In conclusion, we demonstrate that PG inhibits HCC cell proliferation through enhanced ROS production and autophagy activation. Finally, PG-treated cells induced cell apoptosis and may be a new candidate for HCC therapy.
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Affiliation(s)
- Po-Li Wei
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
- Cancer Research Center and Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Huang
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
- * E-mail: (YJC); (CYH)
| | - Yu-Jia Chang
- Cancer Research Center and Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- International PhD Program in Medicine, Taipei Medical University, Taipei, Taiwan
- * E-mail: (YJC); (CYH)
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Propyl Gallate Exerts an Antimigration Effect on Temozolomide-Treated Malignant Glioma Cells through Inhibition of ROS and the NF- κB Pathway. J Immunol Res 2017; 2017:9489383. [PMID: 29062841 PMCID: PMC5618759 DOI: 10.1155/2017/9489383] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/23/2017] [Accepted: 06/28/2017] [Indexed: 01/12/2023] Open
Abstract
In this study, we demonstrated that temozolomide (TMZ) and propyl gallate (PG) combination enhanced the inhibition of migration in human U87MG glioma cells. PG inhibited the TMZ-induced reactive oxygen species (ROS) generation. The mitochondrial complex III and NADPH oxidase are two critical sites that can be considered to regulate antimigration in TMZ-treated U87MG cells. PG can enhance the antimigration effect of TMZ through suppression of metalloproteinase-2 and metalloproteinase-9 activities, ROS generation, and the NF-κB pathway and possibly provide a novel prospective strategy for treating malignant glioma.
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Jeon W, Park SJ, Kim BC. n -Propyl gallate suppresses lipopolysaccharide-induced inducible nitric oxide synthase activation through protein kinase Cδ-mediated up-regulation of heme oxygenase-1 in RAW264.7 macrophages. Eur J Pharmacol 2017; 801:86-94. [DOI: 10.1016/j.ejphar.2017.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 02/19/2017] [Accepted: 03/08/2017] [Indexed: 02/07/2023]
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Jo EJ, Park SJ, Kim BC. Propyl gallate sensitizes human lung cancer cells to cisplatin-induced apoptosis by targeting heme oxygenase-1 for TRC8-mediated degradation. Eur J Pharmacol 2016; 788:321-327. [DOI: 10.1016/j.ejphar.2016.06.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/28/2016] [Accepted: 06/29/2016] [Indexed: 12/25/2022]
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Brand FJ, de Rivero Vaccari JC, Mejias NH, Alonso OF, de Rivero Vaccari JP. RIG-I contributes to the innate immune response after cerebral ischemia. JOURNAL OF INFLAMMATION-LONDON 2015; 12:52. [PMID: 26379474 PMCID: PMC4570046 DOI: 10.1186/s12950-015-0101-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/09/2015] [Indexed: 12/23/2022]
Abstract
Background Focal cerebral ischemia induces an inflammatory response that when exacerbated contributes to deleterious outcomes. The molecular basis regarding the regulation of the innate immune response after focal cerebral ischemia remains poorly understood. Methods In this study we examined the expression of retinoic acid-inducible gene (RIG)-like receptor-I (RIG-I) and its involvement in regulating inflammation after ischemia in the brain of rats subjected to middle cerebral artery occlusion (MCAO). In addition, we studied the regulation of RIG-I after oxygen glucose deprivation (OGD) in astrocytes in culture. Results In this study we show that in the hippocampus of rats, RIG-I and IFN-α are elevated after MCAO. Consistent with these results was an increased in RIG-I and IFN-α after OGD in astrocytes in culture. These data are consistent with immunohistochemical analysis of hippocampal sections, indicating that in GFAP-positive cells there was an increase in RIG-I after MCAO. In addition, in this study we have identified n-propyl gallate as an inhibitor of IFN-α signaling in astrocytes. Conclusion Our findings suggest a role for RIG-I in contributing to the innate immune response after focal cerebral ischemia.
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Affiliation(s)
- Frank J Brand
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine, University of Miami, Miami, FL 33136 USA
| | - Juan Carlos de Rivero Vaccari
- Louisiana State University School of Medicine/Ochsner Medical Center - Ophthalmology Department, New Orleans, LA 70112 USA
| | - Nancy H Mejias
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine, University of Miami, Miami, FL 33136 USA
| | - Ofelia F Alonso
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine, University of Miami, Miami, FL 33136 USA
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, Miller School of Medicine, University of Miami, Miami, FL 33136 USA
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Zhang Y, Wang Y, Lu M, Qiao X, Sun B, Zhang W, Xue D. Modular analysis of bioinformatics demonstrates a critical role for NF-κB in macrophage activation. Inflammation 2015; 37:1240-53. [PMID: 24577727 DOI: 10.1007/s10753-014-9851-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
To achieve the goal of identifying the gene groups that regulated macrophage activation, a total of 925 differentially expressed genes of activated macrophages were found at the intersection of the three series (GSE5099-1, GSE5099-2, and GSE18686) from the Gene Expression Omnibus (GEO) database, and a sub-network was constructed based on the protein-protein interaction (PPI) network. Four communities (K = 3) were identified from the sub-network using the CFinder software. Community 1 was considered as the gene group of interest base on the heat map. GO-BP and KEGG enrichment analysis with the DAVID software showed that the functions of the 14 genes in community 1 were mainly related to the NF-κB pathway. A network was constructed using the Cytoscape software. The diagram showed that STAT1, NFKBIA, NFKAIB, JUN, and RELA were the key genes in the regulation of macrophage activation. Among these genes, RELA (NF-κB P65) was an important member of the NF-κB family, while NFKBIA (IκBα) and NFKAIB (IκBβ) were the inhibitory factors of NF-κB. Small molecules capable of regulating these five genes were identified via the CMap software, and a network diagram was generated using the Cytoscape software to provide a reference for the development of new drugs that regulate macrophage activation.
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Affiliation(s)
- Yingmei Zhang
- Central Laboratory, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, People's Republic of China
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Brennan P, Filippakopoulos P, Knapp S. The therapeutic potential of acetyl-lysine and methyl-lysine effector domains. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.ddstr.2012.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yu PJ, Jin H, Zhang JY, Wang GF, Li JR, Zhu ZG, Tian YX, Wu SY, Xu W, Zhang JJ, Wu SG. Pyranocoumarins Isolated from Peucedanum praeruptorum Dunn Suppress Lipopolysaccharide-Induced Inflammatory Response in Murine Macrophages Through Inhibition of NF-κB and STAT3 Activation. Inflammation 2011; 35:967-77. [DOI: 10.1007/s10753-011-9400-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Abstract
Acetylation of lysine residues is a post-translational modification with broad relevance
to cellular signalling and disease biology. Enzymes that ‘write’
(histone acetyltransferases, HATs) and ‘erase’ (histone deacetylases,
HDACs) acetylation sites are an area of extensive research in current drug development,
but very few potent inhibitors that modulate the ‘reading process’
mediated by acetyl lysines have been described. The principal readers of
ɛ-N-acetyl lysine (Kac) marks are
bromodomains (BRDs), which are a diverse family of evolutionary conserved
protein-interaction modules. The conserved BRD fold contains a deep, largely hydrophobic
acetyl lysine binding site, which represents an attractive pocket for the development of
small, pharmaceutically active molecules. Proteins that contain BRDs have been implicated
in the development of a large variety of diseases. Recently, two highly potent and
selective inhibitors that target BRDs of the BET (bromodomains and extra-terminal) family
provided compelling data supporting targeting of these BRDs in inflammation and in an
aggressive type of squamous cell carcinoma. It is likely that BRDs will emerge alongside
HATs and HDACs as interesting targets for drug development for the large number of
diseases that are caused by aberrant acetylation of lysine residues.
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