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Zheng Y, Wang J, Ling Z, Zhang J, Zeng Y, Wang K, Zhang Y, Nong L, Sang L, Xu Y, Liu X, Li Y, Huang Y. A diagnostic model for sepsis-induced acute lung injury using a consensus machine learning approach and its therapeutic implications. J Transl Med 2023; 21:620. [PMID: 37700323 PMCID: PMC10498641 DOI: 10.1186/s12967-023-04499-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 09/01/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND A significant proportion of septic patients with acute lung injury (ALI) are recognized late due to the absence of an efficient diagnostic test, leading to the postponed treatments and consequently higher mortality. Identifying diagnostic biomarkers may improve screening to identify septic patients at high risk of ALI earlier and provide the potential effective therapeutic drugs. Machine learning represents a powerful approach for making sense of complex gene expression data to find robust ALI diagnostic biomarkers. METHODS The datasets were obtained from GEO and ArrayExpress databases. Following quality control and normalization, the datasets (GSE66890, GSE10474 and GSE32707) were merged as the training set, and four machine learning feature selection methods (Elastic net, SVM, random forest and XGBoost) were applied to construct the diagnostic model. The other datasets were considered as the validation sets. To further evaluate the performance and predictive value of diagnostic model, nomogram, Decision Curve Analysis (DCA) and Clinical Impact Curve (CIC) were constructed. Finally, the potential small molecular compounds interacting with selected features were explored from the CTD database. RESULTS The results of GSEA showed that immune response and metabolism might play an important role in the pathogenesis of sepsis-induced ALI. Then, 52 genes were identified as putative biomarkers by consensus feature selection from all four methods. Among them, 5 genes (ARHGDIB, ALDH1A1, TACR3, TREM1 and PI3) were selected by all methods and used to predict ALI diagnosis with high accuracy. The external datasets (E-MTAB-5273 and E-MTAB-5274) demonstrated that the diagnostic model had great accuracy with AUC value of 0.725 and 0.833, respectively. In addition, the nomogram, DCA and CIC showed that the diagnostic model had great performance and predictive value. Finally, the small molecular compounds (Curcumin, Tretinoin, Acetaminophen, Estradiol and Dexamethasone) were screened as the potential therapeutic agents for sepsis-induced ALI. CONCLUSION This consensus of multiple machine learning algorithms identified 5 genes that were able to distinguish ALI from septic patients. The diagnostic model could identify septic patients at high risk of ALI, and provide potential therapeutic targets for sepsis-induced ALI.
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Affiliation(s)
- Yongxin Zheng
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Jinping Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong,, China
| | - Zhaoyi Ling
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Jiamei Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Yuan Zeng
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Ke Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Yu Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Lingbo Nong
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Ling Sang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Yonghao Xu
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Xiaoqing Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China
| | - Yimin Li
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China.
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China.
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China.
| | - Yongbo Huang
- Department of Critical Care Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China.
- Guangzhou Institute of Respiratory Health, Guangzhou, 510120, China.
- State Key Laboratory of Respiratory Diseases, Guangzhou, 510120, China.
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Dietary polyphenols and their relationship to the modulation of non-communicable chronic diseases and epigenetic mechanisms: A mini-review. FOOD CHEMISTRY. MOLECULAR SCIENCES 2022; 6:100155. [PMID: 36582744 PMCID: PMC9793217 DOI: 10.1016/j.fochms.2022.100155] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 10/18/2022] [Accepted: 12/11/2022] [Indexed: 12/14/2022]
Abstract
Chronic Non-Communicable Diseases (NCDs) have been considered a global health problem, characterized as diseases of multiple factors, which are developed throughout life, and regardless of genetics as a risk factor of important relevance, the increase in mortality attributed to the disease to environmental factors and the lifestyle one leads. Although the reactive species (ROS/RNS) are necessary for several physiological processes, their overproduction is directly related to the pathogenesis and aggravation of NCDs. In contrast, dietary polyphenols have been widely associated with minimizing oxidative stress and inflammation. In addition to their antioxidant power, polyphenols have also drawn attention for being able to modulate both gene expression and modify epigenetic alterations, suggesting an essential involvement in the prevention and/or development of some pathologies. Therefore, this review briefly explained the mechanisms in the development of some NCDs, followed by a summary of some evidence related to the interaction of polyphenols in oxidative stress, as well as the modulation of epigenetic mechanisms involved in the management of NCDs.
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Key Words
- 8-oxodG, 8-oxo-2́deosyguanosine
- ABCG, ATP Binding Cassette Subfamily G Member
- ADAM10, α-secretase
- ADRB3, adrenoceptor Beta 3
- APP, amyloid-β precursor protein
- ARF, auxin response factor
- ARH-I, aplysia ras homology member I
- ARHGAP24, Rho GTPase Activating Protein 24
- ATF6, activating transcription factor 6
- ATP2A3, ATPase Sarcoplasmic/Endoplasmic Reticulum Ca2+ Transporting 3
- BCL2L14, apoptosis facilitator Bcl-2-like protein 14
- Bioactive compounds
- CDH1, cadherin-1
- CDKN, cyclin dependent kinase inhibitor
- CPT, carnitine palmitoyltransferase
- CREBH, cyclic AMP-responsive element-binding protein H
- DANT2, DXZ4 associated non-noding transcript 2, distal
- DAPK1, death-associated protein kinase 1
- DNA methylation
- DNMT, DNA methyltransferase
- DOT1L, disruptor of telomeric silencing 1-like
- EWASs, epigenome-wide association studies
- EZH2, Enhancer of zeste homolog 2
- FAS, Fas cell Surface Death Receptor
- GDNF, glial cell line-derived neurotrophic factor
- GFAP, glial fibrillary acid protein
- GSTP1, Glutathione S-transferases P1
- Gut microbiota modulation
- HAT, histone acetylases
- HDAC, histone deacetylases
- HSD11B2, 11 beta-hydroxysteroid dehydrogenase type 2
- Histone modifications
- IGFBP3, insulin-like growth factor-binding protein 3
- IGT, impaired glucose tolerance
- KCNK3, potassium two pore domain channel subfamily K Member 3
- MBD4, methyl-CpG binding domain 4
- MGMT, O-6-methylguanine-DNA methyltransferase
- NAFLD, Non-alcoholic fatty liver disease
- OCT1, Organic cation transporter 1
- OGG1, 8-Oxoguanine DNA Glycosylase
- Oxidative stress
- PAI-1, plasminogen activator inhibitor 1
- PHOSPHO1, Phosphoethanolamine/Phosphocholine Phosphatase 1
- PLIN1, perilipin 1
- POE3A, RNA polymerase III
- PPAR, peroxisome proliferator-activated receptor
- PPARGC1A, PPARG coactivator 1 alpha
- PRKCA, Protein kinase C alpha
- PTEN, phosphatase and tensin homologue
- Personalized nutrition
- RASSF1A, Ras association domain family member 1
- SAH, S -adenosyl-l-homocysteine
- SAM, S-adenosyl-methionine
- SD, sleep deprivation
- SOCS3, suppressor of cytokine signaling 3
- SREBP-1C, sterol-regulatory element binding protein-1C
- TBX2, t-box transcription factor 2
- TCF7L2, transcription factor 7 like 2
- TET, ten-eleven translocation proteins
- TNNT2, cardiac muscle troponin T
- TPA, 12-O-tetradecanoylphorbol-13-acetate
- lncRNA, long non-coding RNA
- ncRNA, non-coding RNA
- oAβ-induced-LTP, oligomeric amyloid-beta induced long term potentiation
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Polyphenols as Potent Epigenetics Agents for Cancer. Int J Mol Sci 2022; 23:ijms231911712. [PMID: 36233012 PMCID: PMC9570183 DOI: 10.3390/ijms231911712] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 02/06/2023] Open
Abstract
Human diseases such as cancer can be caused by aberrant epigenetic regulation. Polyphenols play a major role in mammalian epigenome regulation through mechanisms and proteins that remodel chromatin. In fruits, seeds, and vegetables, as well as food supplements, polyphenols are found. Compounds such as these ones are powerful anticancer agents and antioxidants. Gallic acid, kaempferol, curcumin, quercetin, and resveratrol, among others, have potent anti-tumor effects by helping reverse epigenetic changes associated with oncogene activation and tumor suppressor gene inactivation. The role dietary polyphenols plays in restoring epigenetic alterations in cancer cells with a particular focus on DNA methylation and histone modifications was summarized. We also discussed how these natural compounds modulate gene expression at the epigenetic level and described their molecular targets in cancer. It highlights the potential of polyphenols as an alternative therapeutic approach in cancer since they modulate epigenetic activity.
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Schürmann M, Goon P, Sudhoff H. Review of potential medical treatments for middle ear cholesteatoma. Cell Commun Signal 2022; 20:148. [PMID: 36123729 PMCID: PMC9487140 DOI: 10.1186/s12964-022-00953-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/05/2022] [Indexed: 11/15/2022] Open
Abstract
Middle ear cholesteatoma (MEC), is a destructive, and locally invasive lesion in the middle ear driven by inflammation with an annual incidence of 10 per 100,000. Surgical extraction/excision remains the only treatment strategy available and recurrence is high (up to 40%), therefore developing the first pharmaceutical treatments for MEC is desperately required. This review was targeted at connecting the dysregulated inflammatory network of MEC to pathogenesis and identification of pharmaceutical targets. We summarized the numerous basic research endeavors undertaken over the last 30+ years to identify the key targets in the dysregulated inflammatory pathways and judged the level of evidence for a given target if it was generated by in vitro, in vivo or clinical experiments. MEC pathogenesis was found to be connected to cytokines characteristic for Th1, Th17 and M1 cells. In addition, we found that the inflammation created damage associated molecular patterns (DAMPs), which further promoted inflammation. Similar positive feedback loops have already been described for other Th1/Th17 driven inflammatory diseases (arthritis, Crohn’s disease or multiple sclerosis). A wide-ranging search for molecular targeted therapies (MTT) led to the discovery of over a hundred clinically approved drugs already applied in precision medicine. Based on exclusion criteria designed to enable fast translation as well as efficacy, we condensed the numerous MTTs down to 13 top drugs. The review should serve as groundwork for the primary goal, which is to provide potential pharmaceutical therapies to MEC patients for the first time in history. Video Abstract
Middle ear cholesteatoma (MEC) is a destructive and locally invasive ulcerated lesion in the middle ear driven by inflammation which occurs in 10 out of 100,000 people annually. Surgical extraction/excision is the only treatment strategy available and recurrence is high (up to 40% after ten years), therefore developing the first pharmaceutical treatments for MEC is desperately required. This review is focused on the connections between inflammation and MEC pathogenesis. These connections can be used as attack points for pharmaceuticals. For this we summarized the results of research undertaken over the last 30 + years. MEC pathogenesis can be described by specific inflammatory dysregulation already known from arthritis, Crohn’s disease or multiple sclerosis. A hallmark of this dysregulation are positive feedback loops of the inflammation further amplifying itself in a vicious circle-like manner. We have identified over one hundred drugs which are already used in clinic to treat other inflammatory diseases, and could potentially be repurposed to treat MEC. To improve and expedite clinical success rates, we applied certain criteria based on our literature searches and condensed these drugs down to the 13 top drugs. We hope the review will serve as groundwork for the primary goal, which is to provide potential pharmaceutical therapies to MEC patients for the first time in history.
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Affiliation(s)
- Matthias Schürmann
- Department of Otolaryngology, Head and Neck Surgery, Universität Bielefeld, Teutoburger Str. 50, 33604, Bielefeld, Germany
| | - Peter Goon
- Department of Otolaryngology, Head and Neck Surgery, Universität Bielefeld, Teutoburger Str. 50, 33604, Bielefeld, Germany.,Department of Medicine, National University of Singapore, and National University Health System, Singapore, Singapore
| | - Holger Sudhoff
- Department of Otolaryngology, Head and Neck Surgery, Universität Bielefeld, Teutoburger Str. 50, 33604, Bielefeld, Germany.
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Feng J, Meng X. Histone modification and histone modification-targeted anti-cancer drugs in breast cancer: Fundamentals and beyond. Front Pharmacol 2022; 13:946811. [PMID: 36188615 PMCID: PMC9522521 DOI: 10.3389/fphar.2022.946811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/15/2022] [Indexed: 12/21/2022] Open
Abstract
Dysregulated epigenetic enzymes and resultant abnormal epigenetic modifications (EMs) have been suggested to be closely related to tumor occurrence and progression. Histone modifications (HMs) can assist in maintaining genome stability, DNA repair, transcription, and chromatin modulation within breast cancer (BC) cells. In addition, HMs are reversible, dynamic processes involving the associations of different enzymes with molecular compounds. Abnormal HMs (e.g. histone methylation and histone acetylation) have been identified to be tightly related to BC occurrence and development, even though their underlying mechanisms remain largely unclear. EMs are reversible, and as a result, epigenetic enzymes have aroused wide attention as anti-tumor therapeutic targets. At present, treatments to restore aberrant EMs within BC cells have entered preclinical or clinical trials. In addition, no existing studies have comprehensively analyzed aberrant HMs within BC cells; in addition, HM-targeting BC treatments remain to be further investigated. Histone and non-histone protein methylation is becoming an attractive anti-tumor epigenetic therapeutic target; such methylation-related enzyme inhibitors are under development at present. Consequently, the present work focuses on summarizing relevant studies on HMs related to BC and the possible mechanisms associated with abnormal HMs. Additionally, we also aim to analyze existing therapeutic agents together with those drugs approved and tested through pre-clinical and clinical trials, to assess their roles in HMs. Moreover, epi-drugs that target HMT inhibitors and HDAC inhibitors should be tested in preclinical and clinical studies for the treatment of BC. Epi-drugs that target histone methylation (HMT inhibitors) and histone acetylation (HDAC inhibitors) have now entered clinical trials or are approved by the US Food and Drug Administration (FDA). Therefore, the review covers the difficulties in applying HM-targeting treatments in clinics and proposes feasible approaches for overcoming such difficulties and promoting their use in treating BC cases.
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Nguyen HD, Jo WH, Hoang NHM, Kim MS. Curcumin-Attenuated TREM-1/DAP12/NLRP3/Caspase-1/IL1B, TLR4/NF-κB Pathways, and Tau Hyperphosphorylation Induced by 1,2-Diacetyl Benzene: An in Vitro and in Silico Study. Neurotox Res 2022; 40:1272-1291. [PMID: 35781221 DOI: 10.1007/s12640-022-00535-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 01/18/2023]
Abstract
We aimed to evaluate the effects of 1,2-diacetylbenzene (DAB) and curcumin on neuroinflammation induced by DAB via triggering receptor expressed on myeloid cells 1 (TREM-1), Toll-like receptor 4 (TLR4), and NLR family pyrin domain containing 3 (NLP3)/calcium-dependent activator protein for secretion 1 (CAPS1)/interleukin 1 beta (IL1B) pathways; tau hyperphosphorylation; reactive oxygen species (ROS); and advanced glycation end-product (AGE) in microglia cells; and explore the molecular mechanisms involved in the key genes induced by DAB and targeted by curcumin in silico analysis. In this study, Western blot, quantitative polymerase chain reaction, and immunocytochemistry were used as the key methods in vitro. In silico analysis, GeneMANIA, ToppFun feature, Metascape, CHEA3, Cytoscape, Autodock, and MIENTURNET were the core approaches used. Curcumin inhibited both the DAB-induced TREM-1/DAP12/NLRP3/caspase-1/IL1B pathway and the TLR4/NF-κB pathway. In BV2 cells, curcumin inhibited ROS, AGE, hyperphosphorylation, glycogen synthase kinase-3β (GSK-3β), and β-amyloid while activating nuclear factor erythroid 2-related factor 2 (Nrf2) expression. In silico studies showed that tumor necrosis factor (TNF), IL6, NFKB1, IL10, and IL1B, as well as MTF1 and ZNF267, were shown to be important genes and transcription factors in the pathogenesis of cognitive impairment produced by DAB and curcumin. Three significant miRNAs (hsa-miR-26a-5p, hsa-miR-203a-3p, and hsa-miR-155-5p) implicated in the etiology of DAB-induced cognitive impairment and targeted by curcumin were also identified. Inflammation and cytokine-associated pathways, Alzheimer's disease, and cognitive impairment were characterized as the most significant biological processes implicated in genes, miRNAs, and transcription factors induced by DAB and targeted by curcumin. Our findings provide new insight into fundamental molecular mechanisms implicated in the pathogenesis of cognitive impairment caused by DAB, particularly the effects of neuroinflammation. Furthermore, this study suggests that curcumin might be a promising therapeutic molecule for cognitive impairment treatment through modulating neuroinflammatory responses.
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Affiliation(s)
- Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Won Hee Jo
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Ngoc Hong Minh Hoang
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Min-Sun Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea.
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Meng Q, Wang X, Guo D, Shi C, Gu R, Ma J, Nieman G, Kollisch-Singule M, Luo J, Cooney RN. Nano-chemically Modified Tetracycline-3 (nCMT-3) Attenuates Acute Lung Injury via Blocking sTREM-1 Release and NLRP3 Inflammasome Activation. Shock 2022; 57:749-758. [PMID: 35583915 DOI: 10.1097/shk.0000000000001927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Intratracheal (IT) lipopolysaccharide (LPS) causes severe acute lung injury (ALI) and systemic inflammation. CMT-3 has pleiotropic anti-inflammatory effects including matrix metalloproteinase (MMP) inhibition, attenuation of neutrophil (PMN) activation, and elastase release. CMT-3's poor water solubility limits its bioavailability when administered orally for treating ALI. We developed a nano-formulation of CMT-3 (nCMT-3) to test the hypothesis that the pleiotropic anti-inflammatory activities of IT nCMT-3 can attenuate LPS-induced ALI. METHODS C57BL/6 mice were treated with aerosolized IT nCMT-3 or saline, then had IT LPS or saline administered 2 h later. Tissues were harvested at 24 h. The effects of LPS and nCMT-3 on ALI were assessed by lung histology, MMP level/activity (zymography), NLRP3 protein, and activated caspase-1 levels. Blood and bronchoalveolar lavage fluid (BALF) cell counts, PMN elastase, and soluble triggering receptor expressed on myelocytes-1 (sTREM-1) levels, TNF-α, IL-1β, IL-6, IL-18, and BALF protein levels were also measured. RESULTS LPS-induced ALI was characterized by histologic lung injury (PMN infiltration, alveolar thickening, edema, and consolidation) elevated proMMP-2, -9 levels and activity, increased NLRP-3 protein and activated caspase-1 levels in lung tissue. LPS-induced increases in plasma and BALF levels of sTREM-1, TNF-α, IL-1β, IL-6, IL-18, PMN elastase and BALF protein levels demonstrate significant lung/systemic inflammation and capillary leak. nCMT-3 significantly ameliorated all of these LPS-induced inflammatory markers to control levels, and decreased the incidence of ALI. CONCLUSIONS Pre-treatment with nCMT3 significantly attenuates LPS-induced lung injury/inflammation by multiple mechanisms including: MMP activation, PMN elastase, sTREM-1 release, and NLRP3 inflammasome/caspase-1 activation.
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Affiliation(s)
- Qinghe Meng
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Xiaojing Wang
- Department of Pharmacology, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Dandan Guo
- Department of Pharmacology, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Changying Shi
- Department of Pharmacology, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Raymond Gu
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Julia Ma
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Gary Nieman
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
- Sepsis Interdisciplinary Research Center (SIRC), State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Michaela Kollisch-Singule
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
- Sepsis Interdisciplinary Research Center (SIRC), State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Juntao Luo
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
- Department of Pharmacology, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
- Sepsis Interdisciplinary Research Center (SIRC), State University of New York (SUNY), Upstate Medical University, Syracuse, New York
| | - Robert N Cooney
- Department of Surgery, State University of New York (SUNY), Upstate Medical University, Syracuse, New York
- Sepsis Interdisciplinary Research Center (SIRC), State University of New York (SUNY), Upstate Medical University, Syracuse, New York
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Deng Q, Yang S, Sun L, Dong K, Li Y, Wu S, Huang R. Salmonella effector SpvB aggravates dysregulation of systemic iron metabolism via modulating the hepcidin-ferroportin axis. Gut Microbes 2022; 13:1-18. [PMID: 33475464 PMCID: PMC7833757 DOI: 10.1080/19490976.2020.1849996] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Iron withholding, an essential component of nutritional immunity, plays a fundamental role in host resistance to Salmonella infection. Our previous study showed that SpvB, an important pSLT-encoded cytotoxic effector, facilitated Salmonella pathogenesis within macrophages via perturbing cellular iron metabolism. However, the underlying mechanisms of SpvB in Salmonella-relevant disorders of systemic iron metabolism have not yet been identified. Here, we demonstrated that SpvB facilitated Salmonella to scavenge iron from the host by modulating the hepcidin-ferroportin axis, a key regulator of systemic iron metabolism. We observed that SpvB enhanced hepatic hepcidin synthesis in a STAT3-dependent manner, but not the BMP/SMAD pathway. This subsequently resulted in a reduction of the unique cellular iron exporter ferroportin, which facilitated hypoferremia and hepatic iron accumulation and ultimately countered the limitation of iron availability, thereby improving the chances of Salmonella survival and replication. Moreover, SpvB promoted the production of proinflammatory molecules associated with the infiltration of inflammatory cells via highly upregulating TREM-1 signaling. Our data supported a role of TREM-1 in SpvB-related dysregulation of host iron metabolism and suggested that targeting TREM-1 might provide a potential therapeutic strategy to prevent or alleviate Salmonella pathogenesis.
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Affiliation(s)
- Qifeng Deng
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China,CONTACT Shuyan Wu Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, No. 199, Ren Ai Road, Suzhou, Jiangsu 215123, PR China
| | - Sidi Yang
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China,Rui Huang Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, No. 199, Ren Ai Road, Suzhou, Jiangsu 215123, PR China
| | - Lanqing Sun
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China
| | - Kedi Dong
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China
| | - Yuanyuan Li
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China
| | - Shuyan Wu
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China,CONTACT Shuyan Wu Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, No. 199, Ren Ai Road, Suzhou, Jiangsu 215123, PR China
| | - Rui Huang
- Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, Suzhou, Jiangsu, PR China,Rui Huang Department of Medical Microbiology, School of Biology & Basic Medical Sciences, Medical College of Soochow University, No. 199, Ren Ai Road, Suzhou, Jiangsu 215123, PR China
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Mechanistic Insight into the Effects of Curcumin on Neuroinflammation-Driven Chronic Pain. Pharmaceuticals (Basel) 2021; 14:ph14080777. [PMID: 34451874 PMCID: PMC8397941 DOI: 10.3390/ph14080777] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/22/2022] Open
Abstract
Chronic pain is a persistent and unremitting condition that has immense effects on patients' quality of life. Studies have shown that neuroinflammation is associated with the induction and progression of chronic pain. The activation of microglia and astrocytes is the major hallmark of spinal neuroinflammation leading to neuronal excitability in the projection neurons. Excessive activation of microglia and astrocytes is one of the major contributing factors to the exacerbation of pain. However, the current chronic pain treatments, mainly by targeting the neuronal cells, remain ineffective and unable to meet the patients' needs. Curcumin, a natural plant product found in the Curcuma genus, improves chronic pain by diminishing the release of inflammatory mediators from the spinal glia. This review details the role of curcumin in microglia and astrocytes both in vitro and in vivo and how it improves pain. We also describe the mechanism of curcumin by highlighting the major glia-mediated cascades in pain. Moreover, the role of curcumin on inflammasome and epigenetic regulation is discussed. Furthermore, we discuss the strategies used to improve the efficacy of curcumin. This review illustrates that curcumin modulating microglia and astrocytes could assure the treatment of chronic pain by suppressing spinal neuroinflammation.
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Wen X, Zhang H, Xiang B, Zhang W, Gong F, Li S, Chen H, Luo X, Deng J, You Y, Hu Z, Jiang C. Hyperoxia-induced miR-342-5p down-regulation exacerbates neonatal bronchopulmonary dysplasia via the Raf1 regulator Spred3. Br J Pharmacol 2021; 178:2266-2283. [PMID: 33434946 DOI: 10.1111/bph.15371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 12/10/2020] [Accepted: 01/01/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND AND PURPOSE Bronchopulmonary dysplasia (BPD) is the most prevalent chronic paediatric lung disease and is linked to the development of chronic obstructive pulmonary disease. MicroRNA-based regulation of type II alveolar epithelial cell (T2AEC) proliferation and apoptosis is an important factor in the pathogenesis of BPD and warrants further investigation. EXPERIMENTAL APPROACH Two murine models of hyperoxic lung injury (with or without miR-342-5p or Sprouty-related, EVH1 domain-containing protein 3 [Spred3] modulation) were employed: a hyperoxia-induced acute lung injury model (100% O2 on postnatal days 1-7) and the BPD model (100% O2 on postnatal days 1-4, followed by room air for 10 days). Tracheal aspirate pellets from healthy control and moderate/severe BPD neonates were randomly selected for clinical miR-342-5p analysis. KEY RESULTS Hyperoxia decreased miR-342-5p levels in primary T2AECs, MLE12 cells and neonatal mouse lungs. Transgenic miR-342 overexpression in neonatal mice ameliorated survival rates and improved the BPD phenotype and BPD-associated pulmonary arterial hypertension (PAH). T2AEC-specific miR-342 transgenic overexpression, as well as miR-342-5p mimic therapy, also ameliorated the BPD phenotype and associated PAH. miR-342-5p targets the 3'UTR of the Raf1 regulator Spred3, inhibiting Spred3 expression. Treatment with recombinant Spred3 exacerbated the BPD phenotype and associated PAH. Notably, miR-342-5p inhibition under room air conditions did not mimic the BPD phenotype. Moderate/severe BPD tracheal aspirate pellets exhibited decreased miR-342-5p levels relative to healthy control pellets. CONCLUSION AND IMPLICATIONS These findings suggest that miR-342-5p mimic therapy may show promise in the treatment or prevention of BPD.
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Affiliation(s)
- Xin Wen
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Hui Zhang
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Bo Xiang
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Weiyu Zhang
- Department of Pediatrics, Chongqing Jiulongpo District Maternity Child Health Care Hospital, Chongqing, China
| | - Fang Gong
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Shiling Li
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Hongyan Chen
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Xuan Luo
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Juan Deng
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Yaoyao You
- Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Zhangxue Hu
- Department of Pediatrics, Army Medical Center, Army Medical University, Chongqing, China
| | - Changke Jiang
- Department of Pediatrics, Chongqing Yongchuan District Maternity Child Health Care Hospital, Chongqing, China.,Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
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11
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Shanmugam MK, Dharmarajan A, Warrier S, Bishayee A, Kumar AP, Sethi G, Ahn KS. Role of histone acetyltransferase inhibitors in cancer therapy. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2020; 125:149-191. [PMID: 33931138 DOI: 10.1016/bs.apcsb.2020.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of cancer is a complex phenomenon driven by various extrinsic as well as intrinsic risk factors including epigenetic modifications. These post-translational modifications are encountered in diverse cancer cells and appear for a relatively short span of time. These changes can significantly affect various oncogenic genes and proteins involved in cancer initiation and progression. Histone lysine acetylation and deacetylation processes are controlled by two opposing classes of enzymes that modulate gene regulation either by adding an acetyl moiety on a histone lysine residue by histone lysine acetyltransferases (KATs) or via removing it by histone deacetylases (KDACs). Deregulated KAT activity has been implicated in the development of several diseases including cancer and can be targeted for the development of anti-neoplastic drugs. Here, we describe the predominant epigenetic changes that can affect key KAT superfamily members during carcinogenesis and briefly highlight the pharmacological potential of employing lysine acetyltransferase inhibitors (KATi) for cancer therapy.
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Affiliation(s)
- Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Arunasalam Dharmarajan
- Department of Biomedical Sciences, Faculty of Biomedical Sciences Technology and Research, Sri Ramachandra Institute of Higher Education & Research, Chennai, India
| | - Sudha Warrier
- Division of Cancer Stem Cells and Cardiovascular Regeneration, Manipal Institute of Regenerative Medicine, Manipal University, Bangalore, India
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL, United States
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Kwang Seok Ahn
- Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.
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12
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Číž M, Dvořáková A, Skočková V, Kubala L. The Role of Dietary Phenolic Compounds in Epigenetic Modulation Involved in Inflammatory Processes. Antioxidants (Basel) 2020; 9:antiox9080691. [PMID: 32756302 PMCID: PMC7464822 DOI: 10.3390/antiox9080691] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 01/09/2023] Open
Abstract
A better understanding of the interactions between dietary phenolic compounds and the epigenetics of inflammation may impact pathological conditions and their treatment. Phenolic compounds are well-known for their antioxidant, anti-inflammatory, anti-angiogenic, and anti-cancer properties, with potential benefits in the treatment of various human diseases. Emerging studies bring evidence that nutrition may play an essential role in immune system modulation also by altering gene expression. This review discusses epigenetic mechanisms such as DNA methylation, post-translational histone modification, and non-coding microRNA activity that regulate the gene expression of molecules involved in inflammatory processes. Special attention is paid to the molecular basis of NF-κB modulation by dietary phenolic compounds. The regulation of histone acetyltransferase and histone deacetylase activity, which all influence NF-κB signaling, seems to be a crucial mechanism of the epigenetic control of inflammation by phenolic compounds. Moreover, chronic inflammatory processes are reported to be closely connected to the major stages of carcinogenesis and other non-communicable diseases. Therefore, dietary phenolic compounds-targeted epigenetics is becoming an attractive approach for disease prevention and intervention.
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Affiliation(s)
- Milan Číž
- Institute of Biophysics of the Czech Academy of Sciences, 612 65 Brno, Czech Republic; (A.D.); (V.S.); (L.K.)
- Correspondence: ; Tel.: +420-541-517-104
| | - Adéla Dvořáková
- Institute of Biophysics of the Czech Academy of Sciences, 612 65 Brno, Czech Republic; (A.D.); (V.S.); (L.K.)
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Veronika Skočková
- Institute of Biophysics of the Czech Academy of Sciences, 612 65 Brno, Czech Republic; (A.D.); (V.S.); (L.K.)
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Lukáš Kubala
- Institute of Biophysics of the Czech Academy of Sciences, 612 65 Brno, Czech Republic; (A.D.); (V.S.); (L.K.)
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, 656 91 Brno, Czech Republic
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13
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Almatroodi SA, Almatroudi A, Alsahli MA, Aljasir MA, Syed MA, Rahmani AH. Epigallocatechin-3-Gallate (EGCG), an Active Compound of Green Tea Attenuates Acute Lung Injury Regulating Macrophage Polarization and Krüpple-Like-Factor 4 (KLF4) Expression. Molecules 2020; 25:molecules25122853. [PMID: 32575718 PMCID: PMC7356789 DOI: 10.3390/molecules25122853] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 12/25/2022] Open
Abstract
Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) are serious clinical complications with a high frequency of morbidity and mortality. The initiation and amplification of inflammation is a well-known aspect in the pathogenesis of ALI and related disorders. Therefore, inhibition of the inflammatory mediators could be an ideal approach to prevent ALI. Epigallocatechin-3-gallate (EGCG), a major constituent of green tea, has been shown to have protective effects on oxidative damage and anti-inflammation. The goal of the present study was to determine whether EGCG improves phenotype and macrophage polarisation in LPS-induced ALI. C57BL/6 mice were given two doses of EGCG (15 mg/kg) intraperitoneally (IP) 1 h before and 3 h after LPS instillation (2 mg/kg). EGCG treatment improved histopathological lesions, Total Leucocyte count (TLC), neutrophils infiltration, wet/dry ratio, total proteins and myeloperoxidase (MPO) activity in LPS-induced lung injury. The results displayed that EGCG reduced LPS-induced ALI as it modulates macrophage polarisation towards M2 status. Furthermore, EGCG also reduced the expression of proinflammatory M1 mediators iNOS TNF-α, IL-1β and IL-6 in the LPS administered lung microenvironment. In addition, it increased the expression of KLF4, Arg1 and ym1, known to augment the M2 phenotype of macrophages. EGCG also alleviated the expression of 8-OHdG, nitrotyrosine, showing its ability to inhibit oxidative damage. TREM1 in the lung tissue and improved lung regenerative capacity by enhancing Ki67, PCNA and Ang-1 protein expression. Together, these results proposed the protective properties of EGCG against LPS-induced ALI in may be attributed to the suppression of M1/M2 macrophages subtype ratio, KLF4 augmentation, lung cell regeneration and regulating oxidative damage in the LPS-induced murine ALI.
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Affiliation(s)
- Saleh A. Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Ahmad Almatroudi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mohammed A. Alsahli
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mohammad A. Aljasir
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mansoor Ali Syed
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India;
| | - Arshad Husain Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
- Correspondence:
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14
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Evans LW, Athukorala M, Martinez-Guryn K, Ferguson BS. The Role of Histone Acetylation and the Microbiome in Phytochemical Efficacy for Cardiovascular Diseases. Int J Mol Sci 2020; 21:E4006. [PMID: 32503339 PMCID: PMC7313062 DOI: 10.3390/ijms21114006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/12/2020] [Accepted: 05/27/2020] [Indexed: 12/15/2022] Open
Abstract
Cardiovascular diseases (CVD) are the main cause of death worldwide and create a substantial financial burden. Emerging studies have begun to focus on epigenetic targets and re-establishing healthy gut microbes as therapeutic options for the treatment and prevention of CVD. Phytochemicals, commonly found in fruits and vegetables, have been shown to exert a protective effect against CVD, though their mechanisms of action remain incompletely understood. Of interest, phytochemicals such as curcumin, resveratrol and epigallocatechin gallate (EGCG) have been shown to regulate both histone acetylation and microbiome re-composition. The purpose of this review is to highlight the microbiome-epigenome axis as a therapeutic target for food bioactives in the prevention and/or treatment of CVD. Specifically, we will discuss studies that highlight how the three phytochemicals above alter histone acetylation leading to global changes in gene expression and CVD protection. Then, we will expand upon these phytochemicals to discuss the impact of phytochemical-microbiome-histone acetylation interaction in CVD.
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Affiliation(s)
- Levi W. Evans
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
| | - Maheshi Athukorala
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
| | | | - Bradley S. Ferguson
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
- Center of Biomedical Research Excellence for Molecular and Cellular Signal Transduction in the Cardiovascular System, University of Nevada Reno, Reno, NV 89557, USA
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15
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Almatroodi SA, Alrumaihi F, Alsahli MA, Alhommrani MF, Khan A, Rahmani AH. Curcumin, an Active Constituent of Turmeric Spice: Implication in the Prevention of Lung Injury Induced by Benzo(a) Pyrene (BaP) in Rats. Molecules 2020; 25:molecules25030724. [PMID: 32046055 PMCID: PMC7037262 DOI: 10.3390/molecules25030724] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 01/31/2020] [Accepted: 02/05/2020] [Indexed: 02/07/2023] Open
Abstract
Benzo(a)pyrene (BaP) is a well-known carcinogen and enhances oxidative stress and apoptosis and also alters several molecular pathways. Curcumin is an active ingredient of Curcuma longa, and it has potent anti-inflammatory, antioxidant activity that defends cells from oxidative stress and cell death. The objectives of the present study were to explore the protective effects of curcumin against long-term administration of BaP induced disturbances in lungs of rats. Male rats were randomly divided into four groups: saline control, BaP only, BaP + curcumin, and curcumin only. Lung histopathology, electron microscopy, inflammatory cytokine release, antioxidant levels, apoptosis, and cell cycle were examined. Instillation of BaP significantly increased infiltration of inflammatory cells in alveolar space and inflammatory cytokine in blood. BaP induced lung tissue alterations including mild bronchitis, scant chronic inflammatory cell infiltrate in the wall of the respiratory bronchiole, and mild intra-alveolar haemorrhage. However, these alterations were found to be significantly less as mild inflammatory cell infiltrate in curcumin plus BaP treated group. Furthermore, electron microscopy results also showed necrotic changes and broken cell membrane of Type-II epithelial cell of alveoli in BaP group, which was reduced after adding curcumin treatment. In addition, we found BaP plus curcumin treatment effectively reduced inflammatory cytokines Tumour Necrosis Factor alpha (TNF-α), Interleukin 6 (IL-6), and C-reactive protein (CRP) levels in blood serum. Moreover, the levels of tunnel staining and p53 expression were significantly increased by BaP, whereas these changes were noticeably modulated after curcumin treatment. BaP also interferes in normal cell cycle, which was significantly improved with curcumin treatment. Overall, our findings suggest that curcumin attenuates BaP -induced lung injury, probably through inhibiting inflammation, oxidative stress and apoptosis in lung epithelial cells, and improving cell proliferation and antioxidants level. Thus, curcumin may be an alternative therapy for improving the outcomes of Benzo(a)pyrene-induced lung injury.
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Affiliation(s)
- Saleh A. Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 52571, Saudi Arabia; (S.A.A.); (F.A.); (M.A.A.); (M.F.A.)
| | - Faris Alrumaihi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 52571, Saudi Arabia; (S.A.A.); (F.A.); (M.A.A.); (M.F.A.)
| | - Mohammed A. Alsahli
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 52571, Saudi Arabia; (S.A.A.); (F.A.); (M.A.A.); (M.F.A.)
| | - Mazen Fahad Alhommrani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 52571, Saudi Arabia; (S.A.A.); (F.A.); (M.A.A.); (M.F.A.)
| | - Arif Khan
- Department of Basic Health Sciences, College of Applied Medical Science, Qassim University, Buraidah 52571, Saudi Arabia;
| | - Arshad Husain Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah 52571, Saudi Arabia; (S.A.A.); (F.A.); (M.A.A.); (M.F.A.)
- Correspondence: ; Tel.: +3800050 (ext. 4835)
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16
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Wang C, Li Q, Li T. Dioscin alleviates lipopolysaccharide-induced acute lung injury through suppression of TLR4 signaling pathways. Exp Lung Res 2020; 46:11-22. [PMID: 31931639 DOI: 10.1080/01902148.2020.1711830] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Aim: Acute lung injury (ALI) is a life-threatening inflammatory syndrome that lacks an effective therapy. Dioscin, a natural steroid saponin isolated from a variety of herbs, could serve as an anti-inflammatory agent, as suggested in previous reports. The purpose of this study was to explore the effects of dioscin on lipopolysaccharide (LPS)-induced ALI and validate the potential mechanisms.Materials and Methods: An ALI model was induced by intratracheal administration of LPS. Dioscin (20, 40, and 80 mg/kg) was administered intragastrically once daily for seven consecutive days prior to LPS challenge.Results: Our data revealed that dioscin significantly suppressed LPS-induced lung pathological changes, pulmonary capillary permeability, pulmonary edema, inflammatory cell infiltration, myeloperoxidase (MPO) activity, and cytokine production, including tumor necrosis factor (TNF)-α, interleukin (IL)-6, and keratinocyte chemoattractant (KC). Moreover, dioscin inhibited LPS-induced nuclear factor-kappaB (NF-κB) activation as well as Toll-like receptor 4 (TLR4) expression.Conclusions: In brief, the results indicated that dioscin alleviates LPS-induced ALI through suppression of TLR4 signaling pathways.
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Affiliation(s)
- Chuntao Wang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingnian Li
- Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianyu Li
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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17
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Karimi A, Ghodsi R, Kooshki F, Karimi M, Asghariazar V, Tarighat-Esfanjani A. Therapeutic effects of curcumin on sepsis and mechanisms of action: A systematic review of preclinical studies. Phytother Res 2019; 33:2798-2820. [PMID: 31429161 DOI: 10.1002/ptr.6467] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/28/2019] [Accepted: 07/12/2019] [Indexed: 12/18/2022]
Abstract
Sepsis is a complex disease that begins with an infectious disorder and causes excessive immune responses. Curcumin is considered as an active component of turmeric that can improve the condition in sepsis due to its anti-inflammatory and antioxidant properties. PubMed, Embase, Google Scholar, Web of Science, and Scopus databases were searched. Searching was not limited to a specific publication period. Only English-language original articles, which had examined the effect of curcumin on sepsis, were included. At first, 1,098 articles were totally found, and 209 articles were selected after excluding duplicated data; 46 articles were remained due to the curcumin effects on sepsis. These included 23 in vitro studies and 23 animal studies. Our results showed that curcumin and various analogs of curcumin can have an inhibitory effect on sepsis-induced complications. Curcumin has the ability to inhibit the inflammatory, oxidative coagulation factors, and regulation of immune responses in sepsis. Despite the promising evidence of the therapeutic effects of curcumin on the sepsis complication, further studies seem necessary to investigate its effect and possible mechanisms of action in human studies.
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Affiliation(s)
- Arash Karimi
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ramin Ghodsi
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fateme Kooshki
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mozhdeh Karimi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahid Asghariazar
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Tarighat-Esfanjani
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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18
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Hamam HJ, Palaniyar N. Post-Translational Modifications in NETosis and NETs-Mediated Diseases. Biomolecules 2019; 9:E369. [PMID: 31416265 PMCID: PMC6723044 DOI: 10.3390/biom9080369] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 12/19/2022] Open
Abstract
: Neutrophils undergo a unique form of cell death that generates neutrophil extracellular traps (NETs) that may help to neutralize invading pathogens and restore homeostasis. However, uncontrolled NET formation (NETosis) can result in numerous diseases that adversely affect health. Recent studies further elucidate the mechanistic details of the different forms of NETosis and their common end structure, as NETs were constantly found to contain DNA, modified histones and cytotoxic enzymes. In fact, emerging evidence reveal that the post translational modifications (PTMs) of histones in neutrophils have a critical role in regulating neutrophil death. Histone citrullination is shown to promote a rapid form of NET formation independent of NADPH oxidase (NOX), which relies on calcium influx. Interestingly, few studies suggest an association between histone citrullination and other types of PTMs to control cell survival and death, such as histone methylation. Even more exciting is the finding that histone acetylation has a biphasic effect upon NETosis, where histone deacetylase (HDAC) inhibitors promote baseline, NOX-dependent and -independent NETosis. However, increasing levels of histone acetylation suppresses NETosis, and to switch neutrophil death to apoptosis. Interestingly, in the presence of NETosis-promoting stimuli, high levels of HDACis limit both NETosis and apoptosis, and promote neutrophil survival. Recent studies also reveal the importance of the PTMs of neutrophils in influencing numerous pathologies. Histone modifications in NETs can act as a double-edged sword, as they are capable of altering multiple types of neutrophil death, and influencing numerous NET-mediated diseases, such as acute lung injury (ALI), thrombosis, sepsis, systemic lupus erythematosus, and cancer progression. A clear understanding of the role of different PTMs in neutrophils would be important for an understanding of the molecular mechanisms of NETosis, and to appropriately treat NETs-mediated diseases.
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Affiliation(s)
- Hussein J Hamam
- Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Nades Palaniyar
- Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.
- Institute of Medical Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, M5S 1A8, Canada.
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Cross D, Drury R, Hill J, Pollard AJ. Epigenetics in Sepsis: Understanding Its Role in Endothelial Dysfunction, Immunosuppression, and Potential Therapeutics. Front Immunol 2019; 10:1363. [PMID: 31275313 PMCID: PMC6591469 DOI: 10.3389/fimmu.2019.01363] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 05/29/2019] [Indexed: 12/11/2022] Open
Abstract
Sepsis has a complex pathophysiology in which both excessive and refractory inflammatory responses are hallmark features. Pro-inflammatory cytokine responses during the early stages are responsible for significant endothelial dysfunction, loss of endothelial integrity, and organ failure. In addition, it is now well-established that a substantial number of sepsis survivors experience ongoing immunological derangement and immunosuppression following a septic episode. The underpinning mechanisms of these phenomena are incompletely understood yet they contribute to a significant proportion of sepsis-associated mortality. Epigenetic mechanisms including DNA methylation, histone modifications, and non-coding RNAs, have an increasingly clear role in modulating inflammatory and other immunological processes. Recent evidence suggests epigenetic mechanisms are extensively perturbed as sepsis progresses, and particularly play a role in endothelial dysfunction and immunosuppression. Whilst therapeutic modulation of the epigenome is still in its infancy, there is substantial evidence from animal models that this approach could reap benefits. In this review, we summarize research elucidating the role of these mechanisms in several aspects of sepsis pathophysiology including tissue injury and immunosuppression. We also evaluate pre-clinical evidence for the use of "epi-therapies" in the treatment of poly-microbial sepsis.
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Affiliation(s)
- Deborah Cross
- Oxford Vaccine Group, Department of Paediatrics, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
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20
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Maiese A, Bolino G, Mastracchio A, Frati P, Fineschi V. An immunohistochemical study of the diagnostic value of TREM-1 as marker for fatal sepsis cases. Biotech Histochem 2018; 94:159-166. [PMID: 30388897 DOI: 10.1080/10520295.2018.1535138] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Triggering receptor expressed on myeloid cells-1 (TREM-1) is produced and up-regulated by exposure of myeloid cells to lipopolysaccharides or other components of either bacterial or fungal origin, which causes it to be strongly expressed on phagocytes that accumulate in inflamed areas. Because TREM-1 participates in septic shock and in amplifying the inflammatory response to bacterial and fungal infections, we believe it could be an immunohistochemical marker for postmortem diagnosis of sepsis. We tested the anti-TREM-1 antibody in 28 cases of death by septic shock and divided them into two groups. The diagnosis was made according to the criteria of the Surviving Sepsis Campaign. In all cases, blood cultures were positive. The first group was comprised subjects that presented high ante-mortem serum procalcitonin and the soluble form of TREM-1 (s-TREM-1) values. The second group comprised subjects in which s-TREM-1 was not measured ante-mortem. We used samples of brain, heart, lung, liver and kidney for each case to test the anti-TREM-1 antibody. A semiquantitative evaluation of the immunohistochemical findings was made. In lung samples, we found immunostaining in the cells of the monocyte line in 24 of 28 cases, which suggests that TREM-1 is produced principally by cells of the monocyte line. In liver tissue, we found low TREM-staining in the hepatocyte cytoplasm, duct epithelium, the portal-biliary space and blood vessel. In kidney tissue samples, we found the TREM-1 antibody immunostaining in glomeruli and renal tubules. We also found TREM-1 staining in the lumen of blood vessels. Immunohistochemical staining using the anti-TREM-1 antibody can be useful for postmortem diagnosis of sepsis.
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Affiliation(s)
- A Maiese
- a Department of Anatomical, Histological, Forensic and Orthopaedic Sciences , Sapienza University of Rome , Rome , Italy.,b IRCCS Neuromed , Pozzilli , Italy
| | - G Bolino
- a Department of Anatomical, Histological, Forensic and Orthopaedic Sciences , Sapienza University of Rome , Rome , Italy
| | - A Mastracchio
- c Medical UOC Pathology Local Health Agency Rome/6 , University of Rome "Tor Vergata" , Rome , Italy
| | - P Frati
- a Department of Anatomical, Histological, Forensic and Orthopaedic Sciences , Sapienza University of Rome , Rome , Italy.,b IRCCS Neuromed , Pozzilli , Italy
| | - V Fineschi
- a Department of Anatomical, Histological, Forensic and Orthopaedic Sciences , Sapienza University of Rome , Rome , Italy.,b IRCCS Neuromed , Pozzilli , Italy
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Kouassi KT, Gunasekar P, Agrawal DK, Jadhav GP. TREM-1; Is It a Pivotal Target for Cardiovascular Diseases? J Cardiovasc Dev Dis 2018; 5:jcdd5030045. [PMID: 30205488 PMCID: PMC6162371 DOI: 10.3390/jcdd5030045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVDs) are as menacing as ever and still continue to kill adults worldwide, notwithstanding tremendous efforts to decrease their consequent mortality and morbidity. Lately, a growing body of research indicated that inflammation plays a pivotal role in the pathogenesis and complications of CVDs. A receptor of the immunoglobulin superfamily, triggering receptors expressed on myeloid cells-1 (TREM-1) was shown to induce and amplify the inflammation in both acute and chronic disease’ pathogenesis and progression, which hence makes it one of the most important complication factors of CVDs. Thus, studies endeavored to investigate the role played by TREM-1 in CVDs with respect to their etiologies, complications, and possible therapeutics. We examined here, for the first time, the most relevant studies regarding TREM-1 involvement in CVDs. We critically analyzed and summarized our findings and made some suggestions for furtherance of the investigations with the aim to utilize TREM-1 and its pathways for diagnostic, management, and prognosis of CVDs. Overall, TREM-1 was found to be involved in the pathogenesis of acute and chronic cardiovascular conditions, such as acute myocardial infarction (AMI) and atherosclerosis. Although most therapeutic approaches are yet to be elucidated, our present research outcome displays a promising future to utilizing the TREM-1 pathway as a potential target for understanding and managing CVDs.
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Affiliation(s)
- Kouassi T Kouassi
- Department of Clinical and Translational Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA.
| | - Palanikumar Gunasekar
- Department of Clinical and Translational Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA.
| | - Devendra K Agrawal
- Department of Clinical and Translational Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA.
| | - Gopal P Jadhav
- Department of Clinical and Translational Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA.
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Folic Acid Improves the Inflammatory Response in LPS-Activated THP-1 Macrophages. Mediators Inflamm 2018; 2018:1312626. [PMID: 30116142 PMCID: PMC6079441 DOI: 10.1155/2018/1312626] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/19/2018] [Accepted: 05/16/2018] [Indexed: 01/28/2023] Open
Abstract
DNA methylation has been suggested as a regulatory mechanism behind some inflammatory processes. The physiological actions of methyl donors, such as folic acid, choline, and vitamin B12 on inflammation-related disease have been associated with the synthesis of the universal methyl donor S-adenosyl methionine (SAM). The aim of this study was to evaluate the effects of folic acid, choline, vitamin B12, and a combination of all on preventing the lipopolysaccharide- (LPS-) induced inflammatory response in human THP-1 monocyte/macrophage cells. Folic acid and the mixture of methyl donors reduced interleukin 1 beta (IL1B) and tumour necrosis factor (TNF) expression as well as protein secretion by these cells. Folic acid and choline decreased C-C motif chemokine ligand 2 (CCL2) mRNA levels. In addition to this, the methyl donor mixture reduced Cluster of differentiation 40 (CD40) expression, but increased serpin family E member 1 (SERPINE1) expression. All methyl donors increased methylation levels in CpGs located in IL1B, SERPINE1, and interleukin 18 (IL18) genes. However, TNF methylation was not modified. After treatment with folic acid and the methyl donor mixture, ChIP analysis showed no change in the binding affinity of nuclear factor-κB (NF-κB) to IL1B and TNF promoter regions after the treatment with folic acid and the methyl donor mixture. The findings of this study suggest that folic acid might contribute to the control of chronic inflammation in inflammatory-related disease.
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Yuan Z, Bedi B, Sadikot RT. Bronchoalveolar Lavage Exosomes in Lipopolysaccharide-induced Septic Lung Injury. J Vis Exp 2018:57737. [PMID: 29863671 PMCID: PMC6101335 DOI: 10.3791/57737] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) represent a heterogeneous group of lung diseases which continues to have a high morbidity and mortality. The molecular pathogenesis of ALI is being better defined; however, because of the complex nature of the disease molecular therapies have yet to be developed. Here we use a lipopolysaccharide (LPS) induced mouse model of acute septic lung injury to delineate the role of exosomes in the inflammatory response. Using this model, we were able to show that mice that are exposed to intraperitoneal LPS secrete exosomes in Broncho-alveolar lavage (BAL) fluid from the lungs that are packaged with miRNA and cytokines which regulate inflammatory response. Further using a co-culture model system, we show that exosomes released from macrophages disrupt expression of tight junction proteins in bronchial epithelial cells. These results suggest that 1) cross talk between innate immune and structural cells through the exosomal shuttling contribute to the inflammatory response and disruption of the structural barrier and 2) targeting these miRNAs may provide a novel platform to treat ALI and ARDS.
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Affiliation(s)
- Zhihong Yuan
- Department of Veterans Affairs, Atlanta VAMC; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Emory University
| | | | - Ruxana T Sadikot
- Department of Veterans Affairs, Atlanta VAMC; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Emory University;
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Alternative and Natural Therapies for Acute Lung Injury and Acute Respiratory Distress Syndrome. BIOMED RESEARCH INTERNATIONAL 2018; 2018:2476824. [PMID: 29862257 PMCID: PMC5976962 DOI: 10.1155/2018/2476824] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 04/08/2018] [Indexed: 01/17/2023]
Abstract
Introduction Acute respiratory distress syndrome (ARDS) is a complex clinical syndrome characterized by acute inflammation, microvascular damage, and increased pulmonary vascular and epithelial permeability, frequently resulting in acute respiratory failure and death. Current best practice for ARDS involves “lung-protective ventilation,” which entails low tidal volumes and limiting the plateau pressures in mechanically ventilated patients. Although considerable progress has been made in understanding the pathogenesis of ARDS, little progress has been made in the development of specific therapies to combat injury and inflammation. Areas Covered In recent years, several natural products have been studied in experimental models and have been shown to inhibit multiple inflammatory pathways associated with acute lung injury and ARDS at a molecular level. Because of the pleiotropic effects of these agents, many of them also activate antioxidant pathways through nuclear factor erythroid-related factor 2, thereby targeting multiple pathways. Several of these agents are prescribed for treatment of inflammatory conditions in the Asian subcontinent and have shown to be relatively safe. Expert Commentary Here we review natural remedies shown to attenuate lung injury and inflammation in experimental models. Translational human studies in patients with ARDS may facilitate treatment of this devastating disease.
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Arora S, Dev K, Agarwal B, Das P, Syed MA. Macrophages: Their role, activation and polarization in pulmonary diseases. Immunobiology 2017; 223:383-396. [PMID: 29146235 PMCID: PMC7114886 DOI: 10.1016/j.imbio.2017.11.001] [Citation(s) in RCA: 351] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 11/10/2017] [Accepted: 11/10/2017] [Indexed: 02/08/2023]
Abstract
Macrophages, circulating in the blood or concatenated into different organs and tissues constitute the first barrier against any disease. They are foremost controllers of both innate and acquired immunity, healthy tissue homeostasis, vasculogenesis and congenital metabolism. Two hallmarks of macrophages are diversity and plasticity due to which they acquire a wobbling array of phenotypes. These phenotypes are appropriately synchronized responses to a variety of different stimuli from either the tissue microenvironment or - microbes or their products. Based on the phenotype, macrophages are classified into classically activated/(M1) and alternatively activated/(M2) which are further sub-categorized into M2a, M2b, M2c and M2d based upon gene expression profiles. Macrophage phenotype metamorphosis is the regulating factor in initiation, progression, and termination of numerous inflammatory diseases. Several transcriptional factors and other factors controlling gene expression such as miRNAs contribute to the transformation of macrophages at different points in different diseases. Understanding the mechanisms of macrophage polarization and modulation of their phenotypes to adjust to the micro environmental conditions might provide us a great prospective for designing novel therapeutic strategy. In view of the above, this review summarises the activation of macrophages, the factors intricated in activation along with benefaction of macrophage polarization in response to microbial infections, pulmonary toxicity, lung injury and other inflammatory diseases such as chronic obstructive pulmonary dysplasia (COPD), bronchopulmonary dysplasia (BPD), asthma and sepsis, along with the existing efforts to develop therapies targeting this facet of macrophage biology.
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Affiliation(s)
- Shweta Arora
- Translational Research Laboratory, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India.
| | - Kapil Dev
- Translational Research Laboratory, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India.
| | - Beamon Agarwal
- Department of Hematopathology, Montefiore Medical Center, 111 East 210th Street, Bronx, NY 10467-2401, United States.
| | - Pragnya Das
- Drexel University College of Medicine, Philadelphia, PA 19134, United States.
| | - Mansoor Ali Syed
- Translational Research Laboratory, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India.
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Hyperoxia causes miR-34a-mediated injury via angiopoietin-1 in neonatal lungs. Nat Commun 2017; 8:1173. [PMID: 29079808 PMCID: PMC5660088 DOI: 10.1038/s41467-017-01349-y] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 09/11/2017] [Indexed: 01/07/2023] Open
Abstract
Hyperoxia-induced acute lung injury (HALI) is a key contributor to the pathogenesis of bronchopulmonary dysplasia (BPD) in neonates, for which no specific preventive or therapeutic agent is available. Here we show that lung micro-RNA (miR)-34a levels are significantly increased in lungs of neonatal mice exposed to hyperoxia. Deletion or inhibition of miR-34a improves the pulmonary phenotype and BPD-associated pulmonary arterial hypertension (PAH) in BPD mouse models, which, conversely, is worsened by miR-34a overexpression. Administration of angiopoietin-1, which is one of the downstream targets of miR34a, is able to ameliorate the BPD pulmonary and PAH phenotypes. Using three independent cohorts of human samples, we show that miR-34a expression is increased in type 2 alveolar epithelial cells in neonates with respiratory distress syndrome and BPD. Our data suggest that pharmacologic miR-34a inhibition may be a therapeutic option to prevent or ameliorate HALI/BPD in neonates.
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Li H, Guo S, Yan L, Meng C, Hu Y, He K, Shi Z. Expression and Purification of a Functional Porcine Soluble Triggering Receptor Expressed on Myeloid Cells 1. Anim Biotechnol 2017. [PMID: 28631997 DOI: 10.1080/10495398.2016.1267016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Triggering receptor expressed on myeloid cells 1 (TREM-1) plays a vital role in the pathogen-triggered amplification loop required for proinflammatory responses. Blockade of TREM-1 signaling may inhibit expansion of sepsis and prolong survival of animals. In the present study, the gene of porcine soluble TREM-1 was cloned and expressed in E. coli. After purification, the bioactivity of recombinant porcine soluble TREM-1 was tested in vitro on porcine alveolar macrophages. The results showed that supplementation with the recombinant porcine sTREM-1 protein rapidly and dose-dependently attenuated the upregulation of cytokines (IL-1β, IL-2, IL-4, IL-8, IL-10, IL-12, IL-16, IL-18, and TNF-α) caused by LPS stimulation in the cultured porcine alveolar macrophages. These results indicate that the recombinant porcine sTREM-1 protein can prevent TREM-1-mediated hyperinflammatory responses after exposure to LPS.
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Affiliation(s)
- Hui Li
- a Key Laboratory of Animal Breeding and Reproduction , Institute of Animal Science, Jiangsu Academy of Agricultural Science , Nanjing , China
| | - Shuangshuang Guo
- b College of Animal Science and Veterinary Medicine , Shandong Agricultural University , Taian , China
| | - Leyan Yan
- a Key Laboratory of Animal Breeding and Reproduction , Institute of Animal Science, Jiangsu Academy of Agricultural Science , Nanjing , China
| | - Chunhua Meng
- a Key Laboratory of Animal Breeding and Reproduction , Institute of Animal Science, Jiangsu Academy of Agricultural Science , Nanjing , China
| | - Yiyi Hu
- c Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Science , Nanjing , China
| | - Kongwang He
- c Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Science , Nanjing , China
| | - Zhendan Shi
- a Key Laboratory of Animal Breeding and Reproduction , Institute of Animal Science, Jiangsu Academy of Agricultural Science , Nanjing , China
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Sadikot RT, Kolanjiyil AV, Kleinstreuer C, Rubinstein I. Nanomedicine for Treatment of Acute Lung Injury and Acute Respiratory Distress Syndrome. Biomed Hub 2017; 2:1-12. [PMID: 31988911 PMCID: PMC6945951 DOI: 10.1159/000477086] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 04/24/2017] [Indexed: 01/05/2023] Open
Abstract
Acute lung injury and acute respiratory distress syndrome (ARDS) represent a heterogenous group of lung disease in critically ill patients that continues to have high mortality. Despite the increased understanding of the molecular pathogenesis of ARDS, specific targeted treatments for ARDS have yet to be developed. ARDS represents an unmet medical need with an urgency to develop effective pharmacotherapies. Multiple promising targets have been identified that could lead to the development of potential therapies for ARDS; however, they have been limited because of difficulty with the mode of delivery, especially in critically ill patients. Nanobiotechnology is the basis of innovative techniques to deliver drugs targeted to the site of inflamed organs, such as the lungs. Nanoscale drug delivery systems have the ability to improve the pharmacokinetics and pharmacodynamics of agents, allowing an increase in the biodistribution of therapeutic agents to target organs and resulting in improved efficacy with reduction in drug toxicity. Although attractive, delivering nanomedicine to lungs can be challenging as it requires sophisticated systems. Here we review the potential of novel nanomedicine approaches that may prove to be therapeutically beneficial for the treatment of this devastating condition.
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Affiliation(s)
- Ruxana T Sadikot
- Department of Veterans Affairs, Atlanta VAMC, Atlanta, GA, USA.,Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Arun V Kolanjiyil
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA.,Joint UNC-NCSU Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA
| | - Clement Kleinstreuer
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA.,Joint UNC-NCSU Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA
| | - Israel Rubinstein
- Division of Pulmonary, Critical Care Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Department of Veterans Affairs, Jesse Brown VAMC, Chicago, IL, USA
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HIV-related proteins prolong macrophage survival through induction of Triggering receptor expressed on myeloid cells-1. Sci Rep 2017; 7:42028. [PMID: 28181540 PMCID: PMC5299418 DOI: 10.1038/srep42028] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 01/03/2017] [Indexed: 12/11/2022] Open
Abstract
Triggering receptor expressed on myeloid cells-1(TREM-1) is a member of the superimmunoglobulin receptor family. We have previously shown that TREM-1 prolongs survival of macrophages treated with lipoolysaccharide through Egr2-Bcl2 signaling. Recent studies suggest a role for TREM-1 in viral immunity. Human immunodeficiency virus-1 (HIV) targets the monocyte/macrophage lineage at varying stages of infection. Emerging data suggest that macrophages are key reservoirs for latent HIV even in individuals on antiretroviral therapy. Here, we investigated the potential role of TREM-1 in HIV latency in macrophages. Our data show that human macrophages infected with HIV show an increased expression of TREM-1. In parallel, direct exposure to the HIV-related proteins Tat or gp120 induces TREM-1 expression in macrophages and confers anti-apoptotic attributes.NF-κB p65 silencing identified that these proteins induce TREM-1 in p65-dependent manner. TREM-1 silencing in macrophages exposed to HIV-related proteins led to increased caspase 3 activation and reduced Bcl-2 expression, rendering them susceptible to apotosis. These novel data reveal that TREM-1 may play a critical role in establishing HIV reservoir in macrophages by inhibiting apoptosis. Therefore, targeting TREM-1 could be a novel therapeutic approach to enhance clearance of the HIV reservoir, at least within the macrophage pools.
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Anti-Inflammatory Activity of Tanshinone IIA in LPS-Stimulated RAW264.7 Macrophages via miRNAs and TLR4-NF-κB Pathway. Inflammation 2016; 39:375-384. [PMID: 26639663 DOI: 10.1007/s10753-015-0259-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Inflammation is a physiological response to infection or injury and involves the innate and adaptive immune system. Tanshinone IIA (Tan IIA) is a well-known flavonoid that elicits an important therapeutic effect by inhibiting inflammatory response. In this study, we examined whether Tan IIA exerts anti-inflammatory activity and investigated the possible mechanisms, including Toll-like receptor 4 (TLR4)-MyD88-nuclear factor kappa B (NF-κB) signaling pathway and microRNA expression in lipopolysaccharide (LPS)-induced RAW264.7 cells. Tan IIA could attenuate the inflammatory reaction via decreasing cytokine, chemokine, and acute-phase protein production, including GM-CSF, sICAM-1, cxcl-1, MIP-1α, and tumor necrosis factor alpha (TNF-α), analyzed by Proteome profile array in LPS-induced RAW264.7 cells. Concurrently, the messenger RNA (mRNA) expressions of IL-1β, TNF-α, and COX-2 were also significantly reduced by Tan IIA. Additionally, Tan IIA decreased LPS-induced NF-κB activation and downregulated TLR4 and MyD88 protein expression levels. We also observed reduced microRNA-155, miR-147, miR-184, miR-29b, and miR-34c expression levels, while LPS-induced microRNA-105, miR-145a, miR-194, miR-383, miR-132, and miR-451a expression levels were upregulated using microRNA (miRNA) qPCR array. Our results indicate that Tan IIA could exert an anti-inflammatory effect on LPS-induced RAW264.7 cells by decreasing TLR4-MyD88-NF-κB signaling pathway and regulating a series of cytokine production and miRNA expression.
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Kolanjiyil AV, Kleinstreuer C, Sadikot RT. Computationally efficient analysis of particle transport and deposition in a human whole-lung-airway model. Part II: Dry powder inhaler application. Comput Biol Med 2016; 84:247-253. [PMID: 27836120 DOI: 10.1016/j.compbiomed.2016.10.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 10/04/2016] [Accepted: 10/31/2016] [Indexed: 10/20/2022]
Abstract
Pulmonary drug delivery is becoming a favored route for administering drugs to treat both lung and systemic diseases. Examples of lung diseases include asthma, cystic fibrosis and chronic obstructive pulmonary disease (COPD) as well as respiratory distress syndrome (ARDS) and pulmonary fibrosis. Special respiratory drugs are administered to the lungs, using an appropriate inhaler device. Next to the pressurized metered-dose inhaler (pMDI), the dry powder inhaler (DPI) is a frequently used device because of the good drug stability and a minimal need for patient coordination. Specific DPI-designs and operations greatly affect drug-aerosol formation and hence local lung deposition. Simulating the fluid-particle dynamics after use of a DPI allows for the assessment of drug-aerosol deposition and can also assist in improving the device configuration and operation. In Part I of this study a first-generation whole lung-airway model (WLAM) was introduced and discussed to analyze particle transport and deposition in a human respiratory tract model. In the present Part II the drug-aerosols are assumed to be injected into the lung airways from a DPI mouth-piece, forming the mouth-inlet. The total as well as regional particle depositions in the WLAM, as inhaled from a DPI, were successfully compared with experimental data sets reported in the open literature. The validated modeling methodology was then employed to study the delivery of curcumin aerosols into lung airways using a commercial DPI. Curcumin has been implicated to possess high therapeutic potential as an antioxidant, anti-inflammatory and anti-cancer agent. However, efficacy of curcumin treatment is limited because of the low bioavailability of curcumin when ingested. Hence, alternative drug administration techniques, e.g., using inhalable curcumin-aerosols, are under investigation. Based on the present results, it can be concluded that use of a DPI leads to low lung deposition efficiencies because large amounts of drugs are deposited in the oral cavity. Hence, the output of a modified DPI has been evaluated to achieve improved drug delivery, especially needed when targeting the smaller lung airways. This study is the first to utilize CF-PD methodology to simulate drug-aerosol transport and deposition under actual breathing conditions in a whole lung model, using a commercial dry-powder inhaler for realistic inlet conditions.
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Affiliation(s)
- Arun V Kolanjiyil
- Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910, United States
| | - Clement Kleinstreuer
- Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910, United States; Joint UNC-NCSU Department of Biomedical Engineering, North Carolina State University, Raleigh, NC 27695-7910, United States.
| | - Ruxana T Sadikot
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, School of Medicine, United States; Department of Veterans Affairs, Atlanta VAMC, United States
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32
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Marion-Letellier R, Savoye G, Ghosh S. IBD: In Food We Trust. J Crohns Colitis 2016; 10:1351-1361. [PMID: 27194533 DOI: 10.1093/ecco-jcc/jjw106] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/10/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Both science and patients associate diet with inflammatory bowel disease [IBD]. There is no doubt that links between IBD and diet are numerous, based on both epidemiological studies and experimental studies. However, scientific evidence to support dietary advice is currently lacking, and dietary counselling for IBD patients is often limited in clinical practice to the improvement of nutrient intake. This review aimed to focus on both patient's beliefs about and molecular mechanisms for crosstalk between nutrients and inflammation. METHODS A literature search using PubMed was performed to identify relevant studies on diet and/or nutrients and their role in IBD. Pubmed [from inception to January 20, 2016] was searched using the terms: 'Crohn', 'colitis',' intestinal epithelial cells', and a list of terms relating to diet or numerous specific nutrients. Terms associated with nutrients were individually tested in the context of IBD. Reference lists from studies selected were manually searched to identify further relevant reports. Manuscripts about diet in the context of IBD from basic science, epidemiological studies, or clinical trials were selected and reviewed. Only articles published in English were included. RESULTS Epidemiological studies highlight the key role of diet in IBD development, and many IBD patients report diet as a triggering factor in relapse of disease. In addition, we present research on the impact of nutrients on innate immunity. CONCLUSION Diet may offer an alternative approach to restoring deficient innate immunity in IBD, and this may be the scientific rationale for providing dietary counselling for IBD patients.
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Affiliation(s)
| | - Guillaume Savoye
- INSERM Unit UMR1073, Rouen University and Rouen University Hospital, Rouen cedex, France.,Department of Gastroenterology, Rouen University Hospital, Rouen cedex, France
| | - Subrata Ghosh
- Division of Gastroenterology, University of Calgary, Alberta, Canada
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Yuan Z, Syed M, Panchal D, Joo M, Bedi C, Lim S, Onyuksel H, Rubinstein I, Colonna M, Sadikot RT. TREM-1-accentuated lung injury via miR-155 is inhibited by LP17 nanomedicine. Am J Physiol Lung Cell Mol Physiol 2015; 310:L426-38. [PMID: 26684249 DOI: 10.1152/ajplung.00195.2015] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 12/11/2015] [Indexed: 01/01/2023] Open
Abstract
Triggering receptors expressed on myeloid cell-1 (TREM-1) is a superimmunoglobulin receptor expressed on myeloid cells. Synergy between TREM-1 and Toll-like receptor amplifies the inflammatory response; however, the mechanisms by which TREM-1 accentuates inflammation are not fully understood. In this study, we investigated the role of TREM-1 in a model of LPS-induced lung injury and neutrophilic inflammation. We show that TREM-1 is induced in lungs of mice with LPS-induced acute neutrophilic inflammation. TREM-1 knockout mice showed an improved survival after lethal doses of LPS with an attenuated inflammatory response in the lungs. Deletion of TREM-1 gene resulted in significantly reduced neutrophils and proinflammatory cytokines and chemokines, particularly IL-1β, TNF-α, and IL-6. Physiologically deletion of TREM-1 conferred an immunometabolic advantage with low oxygen consumption rate (OCR) sparing the respiratory capacity of macrophages challenged with LPS. Furthermore, we show that TREM-1 deletion results in significant attenuation of expression of miR-155 in macrophages and lungs of mice treated with LPS. Experiments with antagomir-155 confirmed that TREM-1-mediated changes were indeed dependent on miR-155 and are mediated by downregulation of suppressor of cytokine signaling-1 (SOCS-1) a key miR-155 target. These data for the first time show that TREM-1 accentuates inflammatory response by inducing the expression of miR-155 in macrophages and suggest a novel mechanism by which TREM-1 signaling contributes to lung injury. Inhibition of TREM-1 using a nanomicellar approach resulted in ablation of neutrophilic inflammation suggesting that TREM-1 inhibition is a potential therapeutic target for neutrophilic lung inflammation and acute respiratory distress syndrome (ARDS).
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Affiliation(s)
- Zhihong Yuan
- Department of Veterans Affairs, Atlanta Veterans Affairs Medical Center, Decatur, Georgia; Division of Pulmonary and Critical Care Medicine, Emory University, Atlanta, Georgia
| | - Mansoor Syed
- Division of Pulmonary and Critical Medicine, Yale University, New Haven, Connecticut
| | - Dipti Panchal
- Division of Pulmonary and Critical Care Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Myungsoo Joo
- Department of Immunology, Pusan University, Yangsan, Korea
| | - Chetna Bedi
- Department of Veterans Affairs, Atlanta Veterans Affairs Medical Center, Decatur, Georgia
| | - Sokbee Lim
- School of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
| | - Hayat Onyuksel
- School of Pharmacy, University of Illinois at Chicago, Chicago, Illinois
| | - Israel Rubinstein
- Division of Pulmonary and Critical Care Medicine, University of Illinois at Chicago, Chicago, Illinois; Department of Veterans Affairs, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois; and
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Ruxana T Sadikot
- Department of Veterans Affairs, Atlanta Veterans Affairs Medical Center, Decatur, Georgia; Division of Pulmonary and Critical Care Medicine, Emory University, Atlanta, Georgia;
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Kalani A, Kamat PK, Kalani K, Tyagi N. Epigenetic impact of curcumin on stroke prevention. Metab Brain Dis 2015; 30:427-35. [PMID: 24788895 PMCID: PMC4216637 DOI: 10.1007/s11011-014-9537-0] [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: 01/20/2014] [Accepted: 03/26/2014] [Indexed: 12/31/2022]
Abstract
The epigenetic impact of curcumin in stroke and neurodegenerative disorders is curiosity-arousing. It is derived from Curcuma longa (spice), possesses anti-oxidative, anti-inflammatory, anti-lipidemic, neuro-protective and recently shown to exhibit epigenetic modulatory properties. Epigenetic studies include DNA methylation, histone modifications and RNA-based mechanisms which regulate gene expression without altering nucleotide sequences. Curcumin has been shown to affect cancer by altering epigenetic changes but its role as an epigenetic agent in cerebral stroke has not been much explored. Although curcumin possesses remarkable medicinal properties, the bioavailability of curcumin has limited its success in epigenetic studies and clinical trials. The present review is therefore designed to look into epigenetic mechanisms that could be induced with curcumin during stroke, along with its molecular designing with different moieties that may increase its bioavailability. Curcumin has been shown to be encapsulated in exosomes, nano-vesicles (<200 nm), thereby showing its therapeutic effects in brain diseases. Curcumin delivered through nanoparticles has been shown to be neuroregenerative but the use of nanoparticles in brain has limitations. Hence, curcumin-encapsulated exosomes along with curcumin-primed exosomes (exosomes released by curcumin-treated cells) are much needed to be explored to broadly look into their use as a novel therapy for stroke.
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Affiliation(s)
- Anuradha Kalani
- Department of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Pradip K Kamat
- Department of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Komal Kalani
- Central Institute of Medicinal and Aromatic Plants-Council of Scientific and Industrial Research (CIMAP-CSIR), Lucknow-226001, India
| | - Neetu Tyagi
- Department of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA
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Boyanapalli SSS, Kong ANT. "Curcumin, the King of Spices": Epigenetic Regulatory Mechanisms in the Prevention of Cancer, Neurological, and Inflammatory Diseases. ACTA ACUST UNITED AC 2015; 1:129-139. [PMID: 26457241 DOI: 10.1007/s40495-015-0018-x] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Curcumin (diferuloylmethane), a polyphenolic compound, is a component of Curcuma longa, commonly known as turmeric. It is a well-known anti-inflammatory, anti-oxidative, and anti-lipidemic agent and has recently been shown to modulate several diseases via epigenetic regulation. Many recent studies have demonstrated the role of epigenetic inactivation of pivotal genes that regulate human pathologies, such as neurocognitive disorders, inflammation, obesity, and cancers. Epigenetic changes involve changes in DNA methylation, histone modifications, or altered microRNA expression patterns which are known to be interconnected and play a key role in tumor progression and failure of conventional chemotherapy. The majority of epigenetic changes are influenced by lifestyle and diets. In this regard, dietary phytochemicals as dietary supplements have emerged as a promising source that are able to reverse these epigenetic alterations, to actively regulate gene expression and molecular targets that are known to promote tumorigenesis, and also to prevent age-related diseases through epigenetic modifications. There have been several studies which reported the role of curcumin as an epigenetic regulator in neurological disorders, inflammation, and in diabetes apart from cancers. The epigenetic regulatory roles of curcumin include (1) inhibition of DNA methyltransferases (DNMTs), which has been well defined from the recent studies on its function as a DNA hypomethylating agent; (2) regulation of histone modifications via regulation of histone acetyltransferases (HATs) and histone deacetylases (HDACs); and (3) regulation of micro RNAs (miRNA). This review summarizes the current knowledge on the effect of curcumin in the treatment and/or prevention of inflammation, neurodegenerative diseases, and cancers by regulating histone deacetylases, histone acetyltransferases, and DNA methyltransferases.
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Affiliation(s)
- Sarandeep S S Boyanapalli
- Center for Cancer Prevention Research, Department of Pharmaceutics, Ernest-Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Ah-Ng. Tony Kong
- Center for Cancer Prevention Research, Department of Pharmaceutics, Ernest-Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA
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Smith AJ, Oertle J, Prato D. Multiple Actions of Curcumin Including Anticancer, Anti-Inflammatory, Antimicrobial and Enhancement via Cyclodextrin. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jct.2015.63029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Zhang Y, Yan R, Hu Y. Oxymatrine inhibits lipopolysaccharide-induced inflammation by down-regulating Toll-like receptor 4/nuclear factor-kappa B in macrophages. Can J Physiol Pharmacol 2014; 93:253-60. [PMID: 25668061 DOI: 10.1139/cjpp-2014-0362] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Oxymatrine (OMT) is the quinolizidine alkaloid extracted from the Chinese herb Sophora flavescens Ait. that has many pharmacological effects and is used for the treatment of some inflammatory diseases. In this study, RAW264.7 cells and THP-1 differentiated macrophages were pretreated with various concentrations of OMT at 2 h prior to treatment with lipopolysaccharide (LPS) (1.0 μg/mL) for different durations. We detected the anti-inflammatory effect of OMT in LPS-stimulated macrophages and investigated the molecular mechanism. We showed that OMT pretreatment significantly inhibited the LPS-induced secretion of nitric oxide (NO), interleukin-1 beta (IL-1β), and tumor necrosis factor-alpha (TNF-α) in supernatant, attenuated the mRNA levels of inducible nitric oxide synthase (iNOS), IL-1β, TNF-α, and Toll-like receptor 4 (TLR4), increased TLR4 and phosphorylation of inhibitor of kappa B-alpha (p-IBα) in cytosol, and decreased the nuclear level of nuclear factor-κB (NF-κB) p65 in macrophages. In conclusion, OMT exerts anti-inflammatory properties in LPS-stimulated macrophages by down-regulating the TLR4/NF-κB pathway.
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Affiliation(s)
- Yu Zhang
- Department of Pathophysiology, the Medical School of Nantong University, 19 Qixiu Road, Nantong 226001, Jiangsu Province, China
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Shukla P, Rao GM, Pandey G, Sharma S, Mittapelly N, Shegokar R, Mishra PR. Therapeutic interventions in sepsis: current and anticipated pharmacological agents. Br J Pharmacol 2014; 171:5011-31. [PMID: 24977655 PMCID: PMC4253453 DOI: 10.1111/bph.12829] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/29/2014] [Accepted: 06/13/2014] [Indexed: 12/14/2022] Open
Abstract
Sepsis is a clinical syndrome characterized by a multisystem response to a pathogenic assault due to underlying infection that involves a combination of interconnected biochemical, cellular and organ-organ interactive networks. After the withdrawal of recombinant human-activated protein C (rAPC), researchers and physicians have continued to search for new therapeutic approaches and targets against sepsis, effective in both hypo- and hyperinflammatory states. Currently, statins are being evaluated as a viable option in clinical trials. Many agents that have shown favourable results in experimental sepsis are not clinically effective or have not been clinically evaluated. Apart from developing new therapeutic molecules, there is great scope for for developing a variety of drug delivery strategies, such as nanoparticulate carriers and phospholipid-based systems. These nanoparticulate carriers neutralize intracorporeal LPS as well as deliver therapeutic agents to targeted tissues and subcellular locations. Here, we review and critically discuss the present status and new experimental and clinical approaches for therapeutic intervention in sepsis.
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Affiliation(s)
- Prashant Shukla
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - G Madhava Rao
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Gitu Pandey
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Shweta Sharma
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Naresh Mittapelly
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Ranjita Shegokar
- Department of Pharmaceutics, Biopharmaceutics & NutriCosmetics, Institute of Pharmacy, Freie Universität BerlinBerlin, Germany
| | - Prabhat Ranjan Mishra
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
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Pi J, Li T, Liu J, Su X, Wang R, Yang F, Bai H, Jin H, Cai J. Detection of lipopolysaccharide induced inflammatory responses in RAW264.7 macrophages using atomic force microscope. Micron 2014; 65:1-9. [DOI: 10.1016/j.micron.2014.03.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 02/27/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
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Li Y, Wang Z, Ma X, Shao B, Gao X, Zhang B, Xu G, Wei Y. Low-dose cisplatin administration to septic mice improves bacterial clearance and programs peritoneal macrophage polarization to M1 phenotype. Pathog Dis 2014; 72:111-23. [PMID: 24850793 DOI: 10.1111/2049-632x.12189] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/09/2014] [Accepted: 05/09/2014] [Indexed: 02/05/2023] Open
Abstract
Sepsis is a systemic inflammatory response to infection, and early responses of macrophages are vital in controlling the infected microorganisms. We used a cecal ligation and puncture (CLP) model of sepsis to determine the role of cisplatin (0.1, 0.5 and 1 mg kg(-1)) with respect to peritoneal macrophages, controlling peritoneal/blood bacterial infection, and systemic inflammation. We found that mice which received low-dose (0.1 and 0.5 mg kg(-1)) i.p. cisplatin had lower mortality rate and improved clinical scores compared with mice in normal saline-treated group, and the level of IL-6 and TNF-α was significantly reduced after cisplatin administration in peritoneal fluid of mice underwent CLP. Although cisplatin had no directly bactericidal ability, the numbers of bacteria in peritoneal and blood were significantly reduced at 24 and 72 h after the onset of CLP. Besides, in vivo phagocytosis and killing assay showed that the ability of macrophage derived from peritoneum was significantly increased with cisplatin treatment (5, 10, and 15 μM) for both gram-positive (Enterococcus faecalis) and gram-negative (Escherichia coli) bacteria. This was associated with the macrophage phenotype polarization from CD11b(+) F4/80(high) CD206(-) to CD11b(+) F4/80(low) CD206(-) M1 group. These findings underscore the importance of low-dose cisplatin in the treatment of sepsis.
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Affiliation(s)
- Yanyan Li
- The Department of Medical Oncology, Cancer Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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41
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Mehta HJ, Patel V, Sadikot RT. Curcumin and lung cancer—a review. Target Oncol 2014; 9:295-310. [DOI: 10.1007/s11523-014-0321-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 05/09/2014] [Indexed: 12/25/2022]
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42
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Yuan Z, Mehta HJ, Mohammed K, Nasreen N, Roman R, Brantly M, Sadikot RT. TREM-1 is induced in tumor associated macrophages by cyclo-oxygenase pathway in human non-small cell lung cancer. PLoS One 2014; 9:e94241. [PMID: 24842612 PMCID: PMC4026315 DOI: 10.1371/journal.pone.0094241] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 03/14/2014] [Indexed: 01/18/2023] Open
Abstract
It is increasingly recognized that the tumor microenvironment plays a critical role in the initiation and progression of lung cancer. In particular interaction of cancer cells, macrophages, and inflammatory response in the tumor microenvironment has been shown to facilitate cancer cell invasion and metastasis. The specific molecular pathways in macrophages that immunoedit tumor growth are not well defined. Triggering receptor expressed on myeloid cells 1 (TREM-1) is a member of the super immunoglobulin family expressed on a select group of myeloid cells mainly monocyte/macrophages. Recent studies suggest that expression of TREM-1 in tumors may predict cancer aggressiveness and disease outcomes in liver and lung cancer however the mechanism of TREM-1 expression in the setting of cancer is not defined. In this study we demonstrate that tumor tissue from patients with non-small cell lung cancer show an increased expression of TREM-1 and PGE2. Immunohistochemistry and immunofluorescence confirmed that the expression of TREM-1 was selectively seen in CD68 positive macrophages. By employing an in vitro model we confirmed that expression of TREM-1 is increased in macrophages that are co-cultured with human lung cancer cells. Studies with COX-2 inhibitors and siCOX-2 showed that expression of TREM-1 in macrophages in tumor microenvironment is dependent on COX-2 signaling. These studies for the first time define a link between tumor COX-2 induction, PGE2 production and expression of TREM-1 in macrophages in tumor microenvironment and suggest that TREM-1 might be a novel target for tumor immunomodulation.
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Affiliation(s)
- Zhihong Yuan
- Veterans Affairs Medical Center, Gainesville, Florida, United States of America
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Hiren J. Mehta
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Kamal Mohammed
- Veterans Affairs Medical Center, Gainesville, Florida, United States of America
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Najmunissa Nasreen
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Robert Roman
- Veterans Affairs Medical Center, Gainesville, Florida, United States of America
| | - Mark Brantly
- Veterans Affairs Medical Center, Gainesville, Florida, United States of America
| | - Ruxana T. Sadikot
- Veterans Affairs Medical Center, Gainesville, Florida, United States of America
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, United States of America
- * E-mail:
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Yuan Z, Syed MA, Panchal D, Joo M, Colonna M, Brantly M, Sadikot RT. Triggering receptor expressed on myeloid cells 1 (TREM-1)-mediated Bcl-2 induction prolongs macrophage survival. J Biol Chem 2014; 289:15118-29. [PMID: 24711453 DOI: 10.1074/jbc.m113.536490] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Triggering receptor expressed on myeloid cells 1 (TREM-1) is a superimmunoglobulin receptor expressed on myeloid cells that plays an important role in the amplification of inflammation. Recent studies suggest a role for TREM-1 in tumor-associated macrophages with relationship to tumor growth and progression. Whether the effects of TREM-1 on inflammation and tumor growth are mediated by an alteration in cell survival signaling is not known. In these studies, we show that TREM-1 knock-out macrophages exhibit an increase in apoptosis of cells in response to lipopolysaccharide (LPS) suggesting a role for TREM-1 in macrophage survival. Specific ligation of TREM-1 with monoclonal TREM-1 (mTREM-1) or overexpression of TREM-1 with adeno-TREM-1 induced B-cell lymphoma-2 (Bcl-2) with depletion of the key executioner caspase-3 prevents the cleavage of poly(ADP-ribose) polymerase. TREM-1 knock-out cells showed lack of induction of Bcl2 with an increase in caspase-3 activation in response to lipopolysaccharide. In addition overexpression of TREM-1 with adeno-TREM-1 led to an increase in mitofusins (MFN1 and MFN2) and knockdown of TREM-1 decreased the expression of mitofusins suggesting that TREM-1 contributes to the maintenance of mitochondrial integrity favoring cell survival. Investigations into potential mechanisms by which TREM-1 alters cell survival showed that TREM-1-induced Bcl-2 in an Egr2-dependent manner. Furthermore, our data shows that expression of Egr2 in response to specific ligation of TREM-1 is ERK mediated. These data for the first time provide novel mechanistic insights into the role of TREM-1 as an anti-apoptotic protein that prolongs macrophage survival.
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Affiliation(s)
- Zhihong Yuan
- From the Veterans Affairs Medical Center, Gainesville, Florida 32610, the Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida 32610
| | - Mansoor Ali Syed
- the Section of Pulmonary, Critical Care, and Sleep Medicine, University of Illinois, Chicago, Illinois 60612
| | - Dipti Panchal
- the Section of Pulmonary, Critical Care, and Sleep Medicine, University of Illinois, Chicago, Illinois 60612
| | - Myungsoo Joo
- the Department of Immunology, Pusan University, Yangsan 626-870, Korea, and
| | - Marco Colonna
- the Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Mark Brantly
- the Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida 32610
| | - Ruxana T Sadikot
- From the Veterans Affairs Medical Center, Gainesville, Florida 32610, the Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida 32610,
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Hyperoxia exacerbates postnatal inflammation-induced lung injury in neonatal BRP-39 null mutant mice promoting the M1 macrophage phenotype. Mediators Inflamm 2013; 2013:457189. [PMID: 24347826 PMCID: PMC3855965 DOI: 10.1155/2013/457189] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/02/2013] [Accepted: 10/03/2013] [Indexed: 12/22/2022] Open
Abstract
RATIONALE Hyperoxia exposure to developing lungs-critical in the pathogenesis of bronchopulmonary dysplasia-may augment lung inflammation by inhibiting anti-inflammatory mediators in alveolar macrophages. OBJECTIVE We sought to determine the O2-induced effects on the polarization of macrophages and the role of anti-inflammatory BRP-39 in macrophage phenotype and neonatal lung injury. METHODS We used RAW264.7, peritoneal, and bone marrow derived macrophages for polarization (M1/M2) studies. For in vivo studies, wild-type (WT) and BRP-39(-/-) mice received continuous exposure to 21% O2 (control mice) or 100% O2 from postnatal (PN) 1 to PN7 days, along with intranasal lipopolysaccharide (LPS) administered on alternate days (PN2, -4, and -6). Lung histology, bronchoalveolar lavage (BAL) cell counts, BAL protein, and cytokines measurements were performed. MEASUREMENTS AND MAIN RESULTS Hyperoxia differentially contributed to macrophage polarization by enhancing LPS induced M1 and inhibiting interleukin-4 induced M2 phenotype. BRP-39 absence led to further enhancement of the hyperoxia and LPS induced M1 phenotype. In addition, BRP-39(-/-) mice were significantly more sensitive to LPS plus hyperoxia induced lung injury and mortality compared to WT mice. CONCLUSIONS These findings collectively indicate that BRP-39 is involved in repressing the M1 proinflammatory phenotype in hyperoxia, thereby deactivating inflammatory responses in macrophages and preventing neonatal lung injury.
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45
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Teiten MH, Dicato M, Diederich M. Curcumin as a regulator of epigenetic events. Mol Nutr Food Res 2013; 57:1619-29. [DOI: 10.1002/mnfr.201300201] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 03/18/2013] [Accepted: 03/21/2013] [Indexed: 12/16/2022]
Affiliation(s)
- Marie-Hélène Teiten
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer; Hôpital Kirchberg, Luxembourg; Luxembourg
| | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer; Hôpital Kirchberg, Luxembourg; Luxembourg
| | - Marc Diederich
- Department of Pharmacy, College of Pharmacy; Seoul National University; Seoul Korea
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