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Osman NA, Soltan MK, Rezq S, Flaherty J, Romero DG, Abdelkhalek AS. Dual COX-2 and 15-LOX inhibition study of novel 4-arylidine-2-mercapto-1-phenyl-1H-imidazolidin-5(4H)-ones: Design, synthesis, docking, and anti-inflammatory activity. Arch Pharm (Weinheim) 2024; 357:e2300615. [PMID: 38315093 PMCID: PMC11073913 DOI: 10.1002/ardp.202300615] [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: 10/21/2023] [Revised: 12/12/2023] [Accepted: 01/10/2024] [Indexed: 02/07/2024]
Abstract
Novel arylidene-5(4H)-imidazolone derivatives 4a-r were designed and evaluated as multidrug-directed ligands, that is, inflammatory, proinflammatory mediators, and reactive oxygen species (ROS) inhibitors. All of the tested compounds showed cyclooxygenase (COX)-1 inhibitory effect more than celecoxib and less than indomethacin and also demonstrated an improved inhibitory activity against 15-lipoxygenase (15-LOX). Compounds 4f, 4l, and 4p exhibited COX-2 selectivity comparable to that of celecoxib, while 4k was the most selective COX-2 inhibitor. Interestingly, the screened results showed that compound 4k exhibited a superior inhibition effect against 15-LOX and was found to be the most selective COX-2 inhibitor over celecoxib, whereas compound 4f showed promising COX-2 and 15-LOX inhibitory activities besides its inhibitory effect against ROS production and its lowering effect of both tumor necrosis factor-α and interleukin-6 levels by ∼80%. Moreover, compound 4f attenuated the lipopolysaccharide-mediated increase in NF-κB activation in RAW 264.7 macrophages. The preferred binding affinity of these molecules was confirmed by docking studies. We conclude that arylidene-5(4H)-imidazolone scaffolds provide promising hits for developing new synthons with anti-inflammatory and antioxidant activities.
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Affiliation(s)
- Nermine A. Osman
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Mostafa K. Soltan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
- Oman College of Health Sciences, Muscat, Sultanate Oman
| | - Samar Rezq
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA
- Women’s Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Joseph Flaherty
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA
- Women’s Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Damian G. Romero
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA
- Women’s Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Ahmed S. Abdelkhalek
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
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Ferreira C, Vieira P, Sá H, Malva J, Castelo-Branco M, Reis F, Viana S. Polyphenols: immunonutrients tipping the balance of immunometabolism in chronic diseases. Front Immunol 2024; 15:1360065. [PMID: 38558823 PMCID: PMC10978763 DOI: 10.3389/fimmu.2024.1360065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Mounting evidence progressively appreciates the vital interplay between immunity and metabolism in a wide array of immunometabolic chronic disorders, both autoimmune and non-autoimmune mediated. The immune system regulates the functioning of cellular metabolism within organs like the brain, pancreas and/or adipose tissue by sensing and adapting to fluctuations in the microenvironment's nutrients, thereby reshaping metabolic pathways that greatly impact a pro- or anti-inflammatory immunophenotype. While it is agreed that the immune system relies on an adequate nutritional status to function properly, we are only just starting to understand how the supply of single or combined nutrients, all of them termed immunonutrients, can steer immune cells towards a less inflamed, tolerogenic immunophenotype. Polyphenols, a class of secondary metabolites abundant in Mediterranean foods, are pharmacologically active natural products with outstanding immunomodulatory actions. Upon binding to a range of receptors highly expressed in immune cells (e.g. AhR, RAR, RLR), they act in immunometabolic pathways through a mitochondria-centered multi-modal approach. First, polyphenols activate nutrient sensing via stress-response pathways, essential for immune responses. Second, they regulate mammalian target of rapamycin (mTOR)/AMP-activated protein kinase (AMPK) balance in immune cells and are well-tolerated caloric restriction mimetics. Third, polyphenols interfere with the assembly of NLR family pyrin domain containing 3 (NLRP3) in endoplasmic reticulum-mitochondria contact sites, inhibiting its activation while improving mitochondrial biogenesis and autophagosome-lysosome fusion. Finally, polyphenols impact chromatin remodeling and coordinates both epigenetic and metabolic reprogramming. This work moves beyond the well-documented antioxidant properties of polyphenols, offering new insights into the multifaceted nature of these compounds. It proposes a mechanistical appraisal on the regulatory pathways through which polyphenols modulate the immune response, thereby alleviating chronic low-grade inflammation. Furthermore, it draws parallels between pharmacological interventions and polyphenol-based immunonutrition in their modes of immunomodulation across a wide spectrum of socioeconomically impactful immunometabolic diseases such as Multiple Sclerosis, Diabetes (type 1 and 2) or even Alzheimer's disease. Lastly, it discusses the existing challenges that thwart the translation of polyphenols-based immunonutritional interventions into long-term clinical studies. Overcoming these limitations will undoubtedly pave the way for improving precision nutrition protocols and provide personalized guidance on tailored polyphenol-based immunonutrition plans.
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Affiliation(s)
- Carolina Ferreira
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Pedro Vieira
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, Pharmacy, Coimbra, Portugal
| | - Helena Sá
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Institute of Immunology, Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
| | - João Malva
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Miguel Castelo-Branco
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT)/Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Coimbra, Portugal
- Institute of Physiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Flávio Reis
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Sofia Viana
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, Pharmacy, Coimbra, Portugal
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Li J, Zhao R, Miao P, Xu F, Chen J, Jiang X, Hui Z, Wang L, Bai R. Discovery of anti-inflammatory natural flavonoids: Diverse scaffolds and promising leads for drug discovery. Eur J Med Chem 2023; 260:115791. [PMID: 37683361 DOI: 10.1016/j.ejmech.2023.115791] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/23/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023]
Abstract
Natural products have been utilized for medicinal purposes for millennia, endowing them with a rich source of chemical scaffolds and pharmacological leads for drug discovery. Among the vast array of natural products, flavonoids represent a prominent class, renowned for their diverse biological activities and promising therapeutic advantages. Notably, their anti-inflammatory properties have positioned them as promising lead compounds for developing novel drugs combating various inflammatory diseases. This review presents a comprehensive overview of flavonoids, highlighting their manifold anti-inflammatory activities and elucidating the underlying pathways in mediating inflammation. Furthermore, this review encompasses systematical classification of flavonoids, related anti-inflammatory targets, involved in vitro and in vivo test models, and detailed statistical analysis. We hope this review will provide researchers engaged in active natural products and anti-inflammatory drug discovery with practical information and potential leads.
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Affiliation(s)
- Junjie Li
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Rui Zhao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Peiran Miao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Fengfeng Xu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Jiahao Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Xiaoying Jiang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China
| | - Zi Hui
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China.
| | - Liwei Wang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China.
| | - Renren Bai
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, PR China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou, 311121, PR China; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, PR China.
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Budi HS, Farhood B. Tumor microenvironment remodeling in oral cancer: Application of plant derived-natural products and nanomaterials. ENVIRONMENTAL RESEARCH 2023; 233:116432. [PMID: 37331557 DOI: 10.1016/j.envres.2023.116432] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/08/2023] [Accepted: 06/15/2023] [Indexed: 06/20/2023]
Abstract
Oral cancers consist of squamous cell carcinoma (SCC) and other malignancies in the mouth with varying degrees of invasion and differentiation. For many years, different modalities such as surgery, radiation therapy, and classical chemotherapy drugs have been used to control the growth of oral tumors. Nowadays, studies have confirmed the remarkable effects of the tumor microenvironment (TME) on the development, invasion, and therapeutic resistance of tumors like oral cancers. Therefore, several studies have been conducted to modulate the TME in various types of tumors in favor of cancer suppression. Natural products are intriguing agents for targeting cancers and TME. Flavonoids, non-flavonoid herbal-derived molecules, and other natural products have shown promising effects on cancers and TME. These agents, such as curcumin, resveratrol, melatonin, quercetin and naringinin have demonstrated potency in suppressing oral cancers. In this paper, we will review and discuss about the potential efficacy of natural adjuvants on oral cancer cells. Furthermore, we will review the possible therapeutic effects of these agents on the TME and oral cancer cells. Moreover, the potential of nanoparticles-loaded natural products for targeting oral cancers and TME will be reviewed. The potentials, gaps, and future perspectives for targeting TME by nanoparticles-loaded natural products will also be discussed.
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Affiliation(s)
- Hendrik Setia Budi
- Department of Oral Biology, Dental Pharmacology, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia.
| | - Bagher Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Abdelkhalek AS, Kothayer H, Rezq S, Orabi KY, Romero DG, El-Sabbagh OI. Synthesis of new multitarget-directed ligands containing thienopyrimidine nucleus for inhibition of 15-lipoxygenase, cyclooxygenases, and pro-inflammatory cytokines. Eur J Med Chem 2023; 256:115443. [PMID: 37182334 PMCID: PMC10247423 DOI: 10.1016/j.ejmech.2023.115443] [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: 01/25/2023] [Revised: 04/29/2023] [Accepted: 04/30/2023] [Indexed: 05/16/2023]
Abstract
A new series of thieno[2,3-d]pyrimidine derivatives 4, 5, 6a-o, and 11 was designed and synthesized starting from cyclohexanone under Gewald condition with the aim to develop multitarget-directed ligands (MTDLs) having anti-inflammatory properties against both 15-LOX and COX-2 enzymes. Moreover, the potential of the compounds against the proinflammatory mediators NO, ROS, TNF-α, and IL-6 were tested in LPS-activated RAW 264.7 macrophages. Compound 6o showed the greatest 15-LOX inhibitory effect (IC50 = 1.17 μM) which was superior to that of the reference nordihydroguaiaretic acid (NDGA, IC50 = 1.28 μM); meanwhile, compounds 6h, 6g, 11, and 4 exhibited potent activities (IC50 = 1.29-1.77 μM). The ester 4 (SI = 137.37) and the phenyl-substituted acetohydrazide 11 (SI = 132.26) showed the highest COX-2 selectivity, which was about 28 times more selective than the reference drug diclofenac (SI = 4.73), however, it was lower than that of celecoxib (SI = 219.25). Interestingly, compound 6o, which showed the highest 15-LOX inhibitory activity and 5 times higher COX-2 selectivity than diclofenac, showed a greater poteny in reducing NO (IC50 = 7.77 μM) than both celecoxib (IC50 = 22.89 μM) and diclofenac (IC50 = 25.34), but comparable activity in inhibiting TNF-α (IC50 = 11.27) to diclofenac (IC50 = 10.45 μM). Similarly, compounds 11 and 6h were more potent in reducing TNF-α and IL6 levels than diclofenac, meanwhile, compound 4 reduced ROS, NO, IL6, and TNF-α levels with comparable potency to the reference drugs celecoxib and diclofenac. Furthermore, docking studies for our compounds within 15-LOX and COX-2 active sites revealed good agreement with the biological evaluations. The proposed compounds could be promising multi-targeted anti-inflammatory candidates to treat resistant inflammatory conditions.
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Affiliation(s)
- Ahmed S Abdelkhalek
- Medicinal Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
| | - Hend Kothayer
- Medicinal Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt.
| | - Samar Rezq
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt; Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Khaled Y Orabi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Health Sciences Center, Kuwait University, 13110, Safat, Kuwait
| | - Damian G Romero
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Osama I El-Sabbagh
- Medicinal Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
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Smith SJ, Lopresti AL, Fairchild TJ. The effects of alcohol on testosterone synthesis in men: a review. Expert Rev Endocrinol Metab 2023; 18:155-166. [PMID: 36880700 DOI: 10.1080/17446651.2023.2184797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 02/22/2023] [Indexed: 03/02/2023]
Abstract
INTRODUCTION Testosterone concentrations in men decline with advancing age, with low testosterone concentrations being associated with multiple morbidities, an increased risk of early mortality, and a reduced quality of life. The purpose of this study was to examine the effects of alcohol on testosterone synthesis in men by investigating its effects on each level of the hypothalamic-pituitary-gonadal axis. AREAS COVERED Acute consumption of a low-to-moderate amount of alcohol increases testosterone concentrations in men, while consumption of a large volume of alcohol is associated with a reduction in serum testosterone concentrations. Elevated testosterone concentrations result from the increased activity of detoxification enzymes in the liver. Conversely, the primary mechanisms of action involved in the reduction of testosterone are increased hypothalamic-pituitary-adrenal axis activity, inflammation, and oxidative stress. When alcohol is consumed in excess, particularly chronically, it negatively affects testosterone production in men. EXPERT OPINION Since testosterone is an important component of men's health and wellbeing, current levels of alcohol consumption in many countries of the world require urgent attention. Elucidating the relationship between alcohol consumption and testosterone may be useful in identifying strategies to attenuate the testosterone-reducing effects of excessive or chronic alcohol consumption.
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Affiliation(s)
- Stephen James Smith
- Clinical Research Australia, Perth, Australia
- The Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia
| | - Adrian Leo Lopresti
- Clinical Research Australia, Perth, Australia
- The Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia
| | - Timothy John Fairchild
- The Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, Australia
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Kilic B, Bardakkaya M, Ilıkcı Sagkan R, Aksakal F, Shakila S, Dogruer DS. New thiourea and benzamide derivatives of 2-aminothiazole as multi-target agents against Alzheimer's disease: Design, synthesis, and biological evaluation. Bioorg Chem 2023; 131:106322. [PMID: 36565675 DOI: 10.1016/j.bioorg.2022.106322] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/30/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022]
Abstract
In this study, two series of compounds were designed and synthesized, bearing thiourea and benzamide derivatives at position 2 of 4-subtituted-2-aminothiazole, respectively. Then, the inhibition potency of all final compounds for cholinesterase enzymes were evaluated. Among the thiourea derivatives, 3c (IC50 = 0.33 μM) was identified as the most potent and selective butyrylcholinesterase inhibitor. Additionally, benzamide derivative 10e (AChE IC50 = 1.47 and BChE IC50 = 11.40 μM) was found as a dual cholinesterase inhibitor. The type of inhibition for both compounds was determined by kinetic studies and the results showed that the compounds were mixed type inhibitors. Moreover, all title compounds were investigated in terms of their antioxidant (DPHH, ORAC) and metal chelator activities. In addition, the neuroprotective effects of selected compounds (3c, 3e, 6c, 6e and 10e) against H2O2-induced damage in the PC12 cell line were tested. The experimental findings demonstrated that thiourea-derived 6e (40.4 %) and benzamide-derived 10e (37.8 %) have a neuroprotective effect of about half as ferulic acid at 10 μM. Subsequently, the cytotoxicity of selected compounds was examined by the MTT assay, and the compounds were found not to have cytotoxic effect on the PC12 cell line in 24 h. Additionally, compounds 6e and 10e were also found to be more effective in inhibiting the release of IL-1β, IL-6, TNF-α and NO compared to other selected compounds in this study.
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Affiliation(s)
- Burcu Kilic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkiye
| | - Merve Bardakkaya
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkiye; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Biruni University, İstanbul, Turkiye
| | - Rahsan Ilıkcı Sagkan
- Department of Medical Biology, Faculty of Medicine, Uşak University, Uşak, Turkiye
| | - Fatma Aksakal
- Department of Chemistry, Hacettepe University, Ankara, Turkiye; Department of Analytical Chemistry, Faculty of Pharmacy, Kocaeli Health and Technology University, Kocaeli, Turkiye
| | - Shakila Shakila
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkiye
| | - Deniz S Dogruer
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkiye.
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Sodium hydroxide-induced Weissella kimchii ghosts (WKGs) as immunostimulant. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00321-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Brace N, Megson IL, Rossi AG, Doherty MK, Whitfield PD. SILAC-based quantitative proteomics to investigate the eicosanoid associated inflammatory response in activated macrophages. J Inflamm (Lond) 2022; 19:12. [PMID: 36050729 PMCID: PMC9438320 DOI: 10.1186/s12950-022-00309-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 08/10/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Macrophages play a central role in inflammation by phagocytosing invading pathogens, apoptotic cells and debris, as well as mediating repair of tissues damaged by trauma. In order to do this, these dynamic cells generate a variety of inflammatory mediators including eicosanoids such as prostaglandins, leukotrienes and hydroxyeicosatraenoic acids (HETEs) that are formed through the cyclooxygenase, lipoxygenase and cytochrome P450 pathways. The ability to examine the effects of eicosanoid production at the protein level is therefore critical to understanding the mechanisms associated with macrophage activation. RESULTS This study presents a stable isotope labelling with amino acids in cell culture (SILAC) -based proteomics strategy to quantify the changes in macrophage protein abundance following inflammatory stimulation with Kdo2-lipid A and ATP, with a focus on eicosanoid metabolism and regulation. Detailed gene ontology analysis, at the protein level, revealed several key pathways with a decrease in expression in response to macrophage activation, which included a promotion of macrophage polarisation and dynamic changes to energy requirements, transcription and translation. These findings suggest that, whilst there is evidence for the induction of a pro-inflammatory response in the form of prostaglandin secretion, there is also metabolic reprogramming along with a change in cell polarisation towards a reduced pro-inflammatory phenotype. CONCLUSIONS Advanced quantitative proteomics in conjunction with functional pathway network analysis is a useful tool to investigate the molecular pathways involved in inflammation.
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Affiliation(s)
- Nicole Brace
- Division of Biomedical Sciences, University of the Highlands and Islands, Centre for Health Science, Old Perth Road, Inverness, IV2 3JH, UK
| | - Ian L Megson
- Division of Biomedical Sciences, University of the Highlands and Islands, Centre for Health Science, Old Perth Road, Inverness, IV2 3JH, UK
| | - Adriano G Rossi
- Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Mary K Doherty
- Division of Biomedical Sciences, University of the Highlands and Islands, Centre for Health Science, Old Perth Road, Inverness, IV2 3JH, UK
| | - Phillip D Whitfield
- Division of Biomedical Sciences, University of the Highlands and Islands, Centre for Health Science, Old Perth Road, Inverness, IV2 3JH, UK.
- Present Address: Glasgow Polyomics, Garscube Campus, University of Glasgow, Glasgow, G61 1BD, UK.
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10
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Flavonoids regulate tumor-associated macrophages - From structure-activity relationship to clinical potential (Review). Pharmacol Res 2022; 184:106419. [PMID: 36041653 DOI: 10.1016/j.phrs.2022.106419] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/13/2022] [Accepted: 08/25/2022] [Indexed: 11/23/2022]
Abstract
In recent years, the strategy for tumor therapy has changed from focusing on the direct killing effect of different types of therapeutic agents on cancer cells to the new mainstream of multi-mode and -pathway combined interventions in the microenvironment of the developing tumor. Flavonoids, with unique tricyclic structures, have diverse and extensive immunomodulatory and anti-cancer activities in the tumor microenvironment (TME). Tumor-associated macrophages (TAMs) are the most abundant immunosuppressive cells in the TME. The regulation of macrophages to fight cancer is a promising immunotherapeutic strategy. This study covers the most comprehensive cognition of flavonoids in regulating TAMs so far. Far more than a simple list of studies, we try to dig out evidence of crosstalk at the molecular level between flavonoids and TAMs from literature, in order to discuss the most relevant chemical structure and its possible relationship with the multimodal pharmacological activity, as well as systematically build a structure-activity relationship between flavonoids and TAMs. Additionally, we point out the advantages of the macro-control of flavonoids in the TME and discuss the potential clinical implications as well as areas for future research of flavonoids in regulating TAMs. These results will provide hopeful directions for the research of antitumor drugs, while providing new ideas for the pharmaceutical industry to develop more effective forms of flavonoids.
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Hamoud MMS, Osman NA, Rezq S, A A Abd El-Wahab H, E A Hassan A, Abdel-Fattah HA, Romero DG, Ghanim AM. Design and Synthesis of Novel 1,3,4-Oxadiazole and 1,2,4-Triazole Derivatives as Cyclooxygenase-2 Inhibitors with Anti-inflammatory and Antioxidant activity in LPS-stimulated RAW264.7 Macrophages. Bioorg Chem 2022; 124:105808. [PMID: 35447409 PMCID: PMC10965220 DOI: 10.1016/j.bioorg.2022.105808] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 03/12/2022] [Accepted: 04/10/2022] [Indexed: 02/07/2023]
Abstract
In an attempt to obtain new candidates with potential anti-inflammatory activity, two series of 1,3,4-oxadiazole based derivatives (8a-g) and 1,2,4-triazole based derivatives (10a,b and 11a-g) were synthesized and evaluated for their COX-1/COX-2 inhibitory activity. In vitro assays showed potent COX-2 inhibitory activity and selectivity of the novel designed compounds (IC50 = 0.04 - 0.16 μM, SI = 60.71 - 337.5) compared to celecoxib (IC50 = 0.045 μM, SI = 326.67). The anti-inflammatory and antioxidant activity of the synthesized compounds was investigated via testing their ability to inhibit pro-inflammatory [tumour necrosis factor (TNF-α) and interleukin-6 (IL-6)] and oxidative stress [nitric oxide (NO) and reactive oxygen species (ROS)] markers production in lipopolysaccharide (LPS)-activated RAW 264.7 macrophages. Most of the novel compounds exhibited potent anti-inflammatory and antioxidant activity. In particular, the novel compounds showed excellent IL-6 inhibitory activity (IC50 = 0.96 - 11.14 μM) when compared to celecoxib (IC50 = 13.04 μM) and diclofenac sodium (IC50 = 22.97 μM). Moreover, the most potent and selective COX-2 inhibitor 11c (IC50 = 0.04 μM, SI = 337.5) displayed significantly higher activity against NO and ROS production compared to celecoxib (IC50 = 2.60 and 3.01 μM vs. 16.47 and 14.30 μM, respectively). Molecular modelling studies of the novel designed molecules into COX-2 active sites analysed their binding affinity. In-silico simulation studies indicated their acceptable physicochemical properties and pharmacokinetic profiles. This study suggests that the novel synthesized COX-2 inhibitors exert potent anti-inflammatory and antioxidant activity, highlighting their potential as promising therapeutic agents for the treatment of inflammation and oxidative stress-related diseases.
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Affiliation(s)
- Mohamed M S Hamoud
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Nermine A Osman
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Samar Rezq
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt; Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center for Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardio Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Hend A A Abd El-Wahab
- Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Abdalla E A Hassan
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Hanan A Abdel-Fattah
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Damian G Romero
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center for Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardio Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Amany M Ghanim
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt.
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12
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Galli C, Sala R, Colangelo MT, Guizzardi S. Tamquam alter idem: formal similarities in a subset of reports on anti-inflammatory compounds in the years 2008–2019. Scientometrics 2022. [DOI: 10.1007/s11192-022-04434-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractA literature search on the in vitro testing of anti-inflammatory compounds of natural origin revealed a considerable number of studies adopting a similar template for data reporting in the years up to 2019. Sixty-five such reports appear to have been published between the years 2008 and 2019. Interestingly, this format template was clearly recognizable by a few hallmarks, such as a precise way of plotting cell viability data, extremely consistent endpoints, and the way these were graphically represented. In some instances the similarities extended to some textual features, such as in the case of figure legends. The similarity was so high that chance can be excluded and these studies can be safely assumed to have intentionally followed a template. By 2020, however, no new reports following this format have been published. Although a consistent and reproducible formatting for data reporting may improve report readability, this phenomenon should also be closely scrutinized to assess the rationale why it occurred, the validity of the endpoints that were chosen and why it was then abandoned. The present report reviewed the mean features of this format, traced its origin and its evolution over time, while discussing the limitations of this model.
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13
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Jiang YC, Han X, Dou JY, Yuan MH, Zhou MJ, Cui ZY, Lian LH, Nan JX, Zhang X, Wu YL. Protective role of Siberian onions against toxin-induced liver dysfunction: an insight into health-promoting effects. Food Funct 2022; 13:4678-4690. [PMID: 35377371 DOI: 10.1039/d1fo04404d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Siberian onions (SOs) are delicious wild vegetables. Their taste is most unique, not only like scallions but also like leeks or garlic. They also have a traditional medicinal value for anti-inflammation, anti-oxidation, and anti-pyretic analgesia, particularly facilitating hepatoprotective effects. The current study investigates the potential mechanism of SOs against toxin-induced liver dysfunction. BALB/c mice were administrated with SO or silymarin by oral gavage for one week, followed by injecting carbon tetrachloride (CCl4) to induce hepatic fibrosis. The effect of SO against hepatic fibrosis was evaluated by examining the liver tissue for serum transaminase, oxidative stress, extracellular matrix, histological alterations, cytokine levels, and apoptosis. In vitro, HSC-T6 cells were cultured with the supernatant from Raw 264.7 cells stimulated with lipopolysaccharides, followed by SO extracts or Niclosamide (Signal Transducer and Activator of Transcription 3 (STAT3) inhibitor) at indicated time periods and doses. SO decreased serum transaminase levels and oxidative stress, and regulated the balance of ECM in CCl4-induced mice, including α-SMA, collagen-I and TIMP-1. SO reduced the release of inflammatory factors and regulated apoptosis-associated proteins, which is related to the inhibition of STAT3 phosphorylation. Moreover, SO reduced the positive expressions of α-SMA and NLRP3 by inhibiting STAT3 phosphorylation in activated HSCs. SO could show health-promoting effects for liver dysfunction by alleviating hepatic fibrogenesis, apoptosis and inflammation in the development of hepatic fibrosis potential depending on the STAT3 signaling pathway.
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Affiliation(s)
- Yu-Chen Jiang
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Xin Han
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China. .,Chinese Medicine Processing Centre, College of pharmacy, Zhejiang Chinese Medical University, China
| | - Jia-Yi Dou
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Ming-Hui Yuan
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Mei-Jie Zhou
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Zhen-Yu Cui
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Li-Hua Lian
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Ji-Xing Nan
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China. .,Clinical Research Center, Affiliated Hospital of Yanbian University, Yanji, Jilin Province 133002, China
| | - Xian Zhang
- Agricultural College, Yanbian University, Yanji, Jilin Province 133002, China.
| | - Yan-Ling Wu
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China.
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14
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Hydrochloric acid-treated Bacillus subtilis ghosts induce IL-1 beta, IL-6, and TNF-alpha in murine macrophage. Mol Cell Toxicol 2022; 18:267-276. [PMID: 35069752 PMCID: PMC8764320 DOI: 10.1007/s13273-022-00221-5] [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] [Accepted: 01/03/2022] [Indexed: 12/27/2022]
Abstract
Background Bacterial ghosts (BGs) are empty cell envelopes commonly generated using Gram-negative bacteria; they represent a potential platform for efficient adjuvant and vaccine delivery systems. However, the efficient production of BGs from bacteria in a short period of time is challenging.
Objective The purpose of this study was to investigate the possibility of producing BGs in the Gram-positive Bacillus subtilis using various chemicals, and the potential application of BGs as a novel immunomodulatory agent. Results In this study, Bacillus subtilis ghosts (BSGs) were generated, for the first time to the best of our knowledge, using the minimum inhibitory concentration (MIC) of hydrochloric acid (HCl; 6.25 mg/mL), sulfuric acid (H2SO4; 3.125 mg/mL), and nitric acid (HNO3; 6.25 mg/mL). Among the BSGs generated using these chemicals, HCl-induced BSGs were completely DNA-free as confirmed by real-time polymerase chain reaction. Scanning electron microscopy showed the formation of transmembrane lysis tunnel structures in HCl-induced BSGs. Murine macrophages exposed to the HCl-induced BSGs at a concentration of 1 × 105 CFU/mL showed a cell viability of 97.8%. Additionally, HCl-induced BSGs upregulated the expression of pro-inflammatory cytokines including interleukin (IL)-1β, tumor necrosis factor alpha, and IL-6. Furthermore, we found differences in the protein expression profiles between intact live bacteria and BSGs using two-dimensional electrophoresis coupled with peptide mass fingerprinting/matrix-assisted laser desorption/ionization-time of flight mass spectrometry analysis.
Conclusion These data suggest that the HCl-induced BSGs may be potentially safe and effective candidates for inactivated bacterial vaccines and/or immunostimulants. Supplementary Information The online version contains supplementary material available at 10.1007/s13273-022-00221-5.
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Bousnaki M, Bakopoulou A, Pich A, Papachristou E, Kritis A, Koidis P. Mapping the Secretome of Dental Pulp Stem Cells Under Variable Microenvironmental Conditions. Stem Cell Rev Rep 2021; 18:1372-1407. [PMID: 34553309 DOI: 10.1007/s12015-021-10255-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2021] [Indexed: 12/31/2022]
Abstract
There is substantial evidence supporting the anti-inflammatory and regenerative potential of dental pulp stem cells (DPSCs) through direct cell transplantation or paracrine action. However, DPSC secretome profile remains inadequately studied. This study provides proteomic profiling of the human DPSC secretome by comparatively analysising cell lysates and respective culture supernatants (i.e. conditioned media-CM) under variable oxygen tension conditions (normoxia-20% O2/CM_Norm vs. hypoxia 2% O2/CM_Hyp) and/or stimulation with Tumor Necrosis Factor alpha (TNF-α). DPSC-CM samples and respective crude lysates (DPSC-CL) were collected and subjected to SDS-PAGE, followed by LC-MS/MS analysis. The identified proteins were analyzed by Gene Ontology, Reactome, and String databases. The anti-inflammatory properties of DPSC-CMs were validated via an in vitro RAW_246.7 murine macrophages model through evaluation of the expression of pro-and anti-inflammatory markers by real-time PCR. Results showed a total of 2413 proteins identified in CM_Norm, 2479 in CM_Norm+TNF-α, 1642 in CM_Hyp, and 2002 in CM_Hyp + TNF-α samples. CM_Norm contained 122 proteins statistically significantly upregulated compared to the CM_Hyp and involved in pathways related to "ECM organization", "cellular response to hypoxia", and "IL signaling". Functional network analysis showed that TGFβ1, TIMP1 and TIMP2 were key nodes among proteins significantly upregulated in the CM_Norm compared to the CM_Hyp, interacting with more than 10 proteins, each. DPSC-CM application in the in vitro RAW_246.7 model decreased the expression of pro-inflammatory markers (MMP-3, MMP-9, MMP-13, MCP-1), while increasing anti-inflammatory markers (IL-10). Overall, DPSC-CM collected under normoxic conditions is enriched with anti-inflammatory, tissue repair and regenerative factors, which prompts further investigation on its therapeutic applications.
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Affiliation(s)
- M Bousnaki
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece
| | - A Bakopoulou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece.
| | - A Pich
- Research Core Unit Proteomics & Institute of Toxicology, Hannover Medical School, 30625, Hannover, Germany
| | - E Papachristou
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece
| | - A Kritis
- Department of Physiology and Pharmacology, School of Medicine, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), Thessaloniki, Greece
| | - P Koidis
- Department of Prosthodontics, School of Dentistry, Faculty of Health Sciences (FHS), Aristotle University of Thessaloniki (AUTh), GR-54124, Thessaloniki, Greece.
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16
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Xie S, Zhang P, Zhang Z, Liu Y, Chen M, Li S, Li X. Bacterial navigation for tumor targeting and photothermally-triggered bacterial ghost transformation for spatiotemporal drug release. Acta Biomater 2021; 131:172-184. [PMID: 34171461 DOI: 10.1016/j.actbio.2021.06.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/11/2021] [Accepted: 06/17/2021] [Indexed: 02/06/2023]
Abstract
Cancer chemotherapy is confronted with challenges regarding the effective delivery of chemotherapeutics into tumor cells after systemic administration. Herein, we propose a strategy to load drugs into probiotic E. coli Nissle 1917 (EcN) for self-guided navigation to tumor tissues and subsequently release the drugs with in situ transformation into bacterial ghosts (BGs). Chemotherapeutic agent 5-fluorouracil (FU) and macrophage phenotype regulator zoledronic acid (ZOL) are loaded into EcN through electroporation, followed by decoration of Au nanorods on the ECN surface to construct EcNZ/F@Au. High loading levels of 5FU (8.8%) and ZOL (10.5%) are achieved as well as high retention rates of bacterial viability (87%) and motion velocity (88%). Under near infrared (NIR) illumination the photothermal effect of Au nanorods elevates the local temperature to induce the transformation of live EcN into BGs. The created transmembrane channels initiate the gradual drug release from BGs, thus representing the first attempt to control the drug release via a biological evolution. An intermittent NIR illumination causes stepwise increases in the BG formation and drug release, which could implement an external on-off control and spatiotemporal drug release. Self-guided motion of EcN promotes efficient extravasation across blood vessels and preferential accumulation of drugs in tumors. In addition to the chemotherapeutic effect of FU, the local release of ZOL from EcNZ/F@Au enhances valid polarization of tumor-associated macrophages toward the M1 phenotype and an effective production of proinflammatory cytokines, leading to a synergistic efficacy on tumor growth inhibition. Thus, this study demonstrates a feasible strategy to integrate chemotherapy, immunotherapy, and photothermal effects in a concise manner for effective cancer treatment with few side effects. STATEMENT OF SIGNIFICANCE: Bacteria are capable to trace and colonize in hypoxic tumor tissues. Bacterial drug carriers indicate limitations in efficient drug loading and effective release modulation. Herein, we propose a strategy to load drugs into bacteria for self-guided delivery and subsequently release the drugs in tumors with in situ transformation into bacterial ghost (BGs). Drugs are loaded into live bacteria through electroporation and Au nanorods are decorated on the bacterial surface, wherein the photothermal effect, chemotherapy, and immunotherapy are integrated in a concise manner. NIR illmumination of Au nanorods elevates the local temparature, induces the BG tranformation, and activates the spatiotemporal drug release, representing the first attempt of release modulation via a biological evolution.
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Structural, antioxidant, prebiotic and anti-inflammatory properties of pectic oligosaccharides hydrolyzed from okra pectin by Fenton reaction. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106779] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Ghanim AM, Rezq S, Ibrahim TS, Romero DG, Kothayer H. Novel 1,2,4-triazine-quinoline hybrids: The privileged scaffolds as potent multi-target inhibitors of LPS-induced inflammatory response via dual COX-2 and 15-LOX inhibition. Eur J Med Chem 2021; 219:113457. [PMID: 33892270 DOI: 10.1016/j.ejmech.2021.113457] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/31/2021] [Accepted: 04/05/2021] [Indexed: 02/06/2023]
Abstract
Based on the observed pharmacophoric structural features for the reported dual COX/15-LOX inhibitors and inspired by the abundance of COX/LOX inhibitory activities reported for the 1,2,4-triazine and quinoline scaffolds, we designed and synthesized novel 1,2,4-triazine-quinoline hybrids (8a-n). The synthesized hybrids were evaluated in vitro as dual COXs/15-LOX inhibitors. The new triazine-quinoline hybrids (8a-n) exhibited potent COX-2 inhibitory profiles (IC50 = 0.047-0.32 μM, SI ∼ 20.6-265.9) compared to celecoxib (IC50 = 0.045 μM, SI ∼ 326). Moreover, they revealed potent inhibitory activities against 15-LOX enzyme compared to reference quercetin (IC50 = 1.81-3.60 vs. 3.34 μM). Hybrid 8e was the most potent and selective dual COX-2/15-LOX inhibitor (COX-2 IC50 = 0.047 μM, SI = 265.9, 15-LOX IC50 = 1.81 μM). These hybrids were further challenged by their ability to inhibit NO, ROS, TNF-α, IL-6 inflammatory mediators, and 15-LOX product, 15-HETE, production in LPS-activated RAW 264.7 macrophages cells. Compound 8e was the most potent hybrid in reducing ROS and 15-HETE levels showing IC50 values of 1.02 μM (11-fold more potent than that of celecoxib, IC50 = 11.75 μM) and 0.17 μM (about 43 times more potent than celecoxib, IC50 = 7.46 μM), respectively. Hybrid 8h exhibited an outstanding TNF-α inhibition with IC50 value of 0.40 μM which was about 25 times more potent than that of celecoxib and diclofenac (IC50 = 10.69 and 10.27 μM, respectively). Docking study of the synthesized hybrids into the active sites of COX-2 and 15-LOX enzymes ensures their favored binding affinity. To our knowledge, herein we reported the first 1,2,4-triazine-quinoline hybrids as dual COX/15-LOX inhibitors.
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Affiliation(s)
- Amany M Ghanim
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt
| | - Samar Rezq
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Egypt; Departments of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center for Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardio Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Tarek S Ibrahim
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Damian G Romero
- Departments of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS, USA; Mississippi Center for Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS, USA; Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS, USA; Cardio Renal Research Center, University of Mississippi Medical Center, Jackson, MS, USA
| | - Hend Kothayer
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Egypt.
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Ayaz F, Yuzer A, Ince T, Ince M. Anti-Cancer and Anti-Inflammatory Activities of Bromo- and Cyano-Substituted Azulene Derivatives. Inflammation 2021; 43:1009-1018. [PMID: 31955292 DOI: 10.1007/s10753-020-01186-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Natural products and their synthetic derivatives gathered attention due to their pharmaceutical capacities. They have been in use against different types of diseases ranging from cancer to inflammatory disorders. In order to increase their efficacy and prevent the possible side effects, these natural compounds are manipulated at the laboratory conditions and modified according to our needs. Azulene is one of these compounds whose anti-inflammatory potential have been shown by the previous studies, but a detailed analysis of its effect at the cellular level in terms of pro-inflammatory cytokine production has not been studied yet. Moreover, its derivative potential has not been characterized extensively. In our study, we examined the cytotoxic, immunomodulatory and immunostimulatory potential of bromo- and cyano-substituted azulenes on the mammalian macrophages. These unique compounds had differential effects on the production of pro-inflammatory cytokines and they were anti-inflammatory immunomodulators. Furthermore, they exerted anti-proliferative effect on breast and prostate cancer cells which supports their anti-cancer potential as well.
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Affiliation(s)
- Furkan Ayaz
- Department of Biotechnology, Faculty of Arts and Science, Mersin University, 33110, Mersin, Turkey.
| | - Abdulcelil Yuzer
- Advanced Technology Research & Application Center, Mersin University, Ciftlikkoy Campus, TR-33343, Mersin, Turkey
| | - Tuncay Ince
- Advanced Technology Research & Application Center, Mersin University, Ciftlikkoy Campus, TR-33343, Mersin, Turkey
| | - Mine Ince
- Department of Energy Systems Engineering Faculty of Tarsus Technology, Tarsus University, 33400, Mersin, Turkey.
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Anti-Inflammatory Effects of Sosiho-Tang, a Traditional Herbal Formula, on Acute Lung Injury in LPS-Sensitized Mice and -Raw 264.7 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6641689. [PMID: 33628305 PMCID: PMC7886507 DOI: 10.1155/2021/6641689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 11/28/2022]
Abstract
Acute lung injury (ALI) is a series of syndromes with persistent inflammation and abnormally increased vascular permeability. Sosiho-tang (SSHT), a traditional herbal formula consisting of a mixture of seven herbs, has been used to treat allergic reactions and chronic hepatitis disease in East Asia. In this study, we determined whether SSHT has an inhibitory effect against lipopolysaccharide- (LPS-) induced acute lung injury (ALI) in mice. 0.05, 0.55, and 5.55 mg/kg of SSHT were orally administered to C57BL/6J mice for 7 days prior to the administration of LPS. After 2 h of LPS sensitization, lung tissues were collected to confirm the lung histology and ALI-related inflammatory factors. SSHT ameliorated the LPS-induced alveolar hemorrhage, alveolar wall thickening, and the shrinkage of the alveolar spaces in the ALI mice model. Proinflammatory cytokines including IL-6, TNF-α, and IFN-γ in the lung tissue were significantly regulated in the SSHT-treated groups compared to the LPS only-treated group. Also, increases of IL-6 and TNF-α and decrease of IFN-γ expressions were dose-dependently modulated by SSHT treatment in LPS-induced raw 264.7 cells. Additionally, the translocation of NF-κB into nucleus and phosphorylation of mitogen-activated protein (MAP) kinase were significantly attenuated by the treatment of SSHT in LPS-sensitized ALI mice. SSHT showed anti-inflammatory activities by inhibiting proinflammatory cytokines and NF-κB signaling in LPS-induced ALI. This study demonstrates that SSHT has preventive effects on LPS-induced ALI by regulating inflammatory responses as an alternative for treating lung diseases.
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Erdogan M, Kilic B, Sagkan RI, Aksakal F, Ercetin T, Gulcan HO, Dogruer DS. Design, synthesis and biological evaluation of new benzoxazolone/benzothiazolone derivatives as multi-target agents against Alzheimer's disease. Eur J Med Chem 2020; 212:113124. [PMID: 33395623 DOI: 10.1016/j.ejmech.2020.113124] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/27/2020] [Accepted: 12/18/2020] [Indexed: 01/04/2023]
Abstract
In this study, four series of compounds with benzoxazolone and benzothiazolone cores were designed, synthesized and evaluated as multifunctional agents against Alzheimer's disease (AD). Additionally, in order to shed light on the effect of the carbonyl groups of benzoxazolone/benzothiazolone, benzoxazole/benzothiazole-containing analogues were also synthesized and evaluated. Inhibition potency of all final compounds towards cholinesterase enzymes and their antioxidant activity were tested. Subsequently, the anti-inflammatory activity, cytotoxicity, apoptosis, and Aβ aggregation inhibition tests were also performed for selected compounds. The results indicated that compounds 11c, a pentanamide derivative with benzothiazolone core, and 14b, a keton derivative with benzothiazolone core, were considered as promising multi-functional agents for further investigation against AD. The reversibility, kinetic and molecular docking studies were also performed for the compounds with the highest AChE 14b (eeAChE IC50 = 0.34 μM, huAChE IC50 = 0.46 μM) and BChE 11c (eqBChE IC50 = 2.98 μM, huBChE IC50 = 2.56 μM) inhibitory activities.
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Affiliation(s)
- Merve Erdogan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Burcu Kilic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Rahsan Ilıkcı Sagkan
- Department of Medical Biology, Faculty of Medicine, Uşak University, Uşak, Turkey
| | - Fatma Aksakal
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Tugba Ercetin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Eastern Mediterranean University, Gazimagosa, Cyprus
| | - Hayrettin O Gulcan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Eastern Mediterranean University, Gazimagosa, Cyprus
| | - Deniz S Dogruer
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey.
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Alkadi KAA, Ashraf K, Adam A, Shah SAA, Taha M, Hasan MH, John C, Salleh RM, Ahmad W. In Vitro Cytotoxicity and Anti-inflammatory Cytokinine Activity Study of Three Isolated Novel Compounds of Prismatomeris glabra. J Pharm Bioallied Sci 2020; 13:116-122. [PMID: 34084057 PMCID: PMC8142914 DOI: 10.4103/jpbs.jpbs_279_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/09/2020] [Accepted: 08/24/2020] [Indexed: 11/10/2022] Open
Abstract
Objectives: The aim of the present study was to isolate and evaluate cytotoxicity and anti-inflammatory activities of new novel compounds isolated from Prismatomeris glabra. Materials and Methods: Dried root of P. glabra was extracted under reflux with methyl alcohol, fractionated through the vacuum liquid chromatography technique, and evaporated and then purified the compounds using column chromatography and preparative thin-layer chromatography. THP-1 cells were treated with amentoflavone, 5,7,4′-hydroxyflavonoid, and stigmasterol with various concentrations (0–30 µg/mL) and then incubated with MTS reagent for 2h. Treatment was done for 24, 48, and 72h. Then, effects of these compounds were also tested on PGE2, TNF-α, and IL-6 expression in human THP-1-derived macrophage cells for 24h. Results: Three new compounds such as amentoflavone, 5,7,4′-hydroxyflavonoid, and stigmasterol were isolated. After 24h of incubation, a significant decrease in cell viability was reported with IC50 values of amentoflavone, 5,7,4′- hydroxyflavonoid, and stigmasterol (21 µg/mL ≡ 38 M), (18 µg/mL ≡ 66 M) and (20 µg/mL ≡ 48.5 M), respectively. Whereas for 48 and 72h treatment showed a less decreased cell viability compared with 24h treatment. These compounds also showed a significant reduction in the production of TNF-α, IL-6, and PGE2 in a dose-dependent manner. Conclusions: The isolated new compounds showed significant cytotoxicity and anti-inflammatory effects.
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Affiliation(s)
- Khalid A A Alkadi
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Kamran Ashraf
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.,Atta-ur-Rahman Institute for Natural Product Discovery, UniversitiTeknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor, Malaysia
| | - Aishah Adam
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Syed Adnan Ali Shah
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia.,Atta-ur-Rahman Institute for Natural Product Discovery, UniversitiTeknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor, Malaysia
| | - Muhammad Taha
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Mizaton Hazizul Hasan
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Cinimathew John
- Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | | | - Wasim Ahmad
- Department of Pharmacy, Mohammed Al-Mana College for Medical Sciences, Dammam, Saudi Arabia
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Sarkar P, Thirumurugan K. New insights into TNFα/PTP1B and PPARγ pathway through RNF213- a link between inflammation, obesity, insulin resistance, and Moyamoya disease. Gene 2020; 771:145340. [PMID: 33333224 DOI: 10.1016/j.gene.2020.145340] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/11/2020] [Accepted: 12/01/2020] [Indexed: 01/02/2023]
Abstract
Diabetic patients are always at a higher risk of ischemic diseases like coronary artery diseases. One such ischemic carotid artery disease is Moyamoya disease (MMD) associated with diabetes Type I and II, but the causality was unclear. Ring Finger Protein 213 (RNF213) is the major susceptible gene for MMD. To understand the association between diabetes mellitus and MMD we chose the major players from both of the anomalies: insulin and RNF213. But before establishing the role of RNF213 in the insulin-regulating pathway we had to understand the involvement of RNF213 within different biological systems. For this, we have adopted a preliminary computational approach to find the prominent interactions of RNF213. Our first objective was to construct an interactome for RNF213. We have analyzed several curated databases and adapted a list of RNF213 interacting partners to develop its interactome. Then to understand the involvement of this interactome in biological functions we have analyzed major biological pathways, biological processes, and prominent clusters related to this interactome through a computational approach. Then to develop a pathway that might give clues for RNF213 involvement in the insulin regulatory pathway we have validated the intercluster and intracluster predictions and identified a regulatory pathway for RNF213. RNF213 interactome was observed to be involved in adaptive immunity with 4 major clusters; one of the clusters involved TNFα. The immune system involves several pathways, and therefore at this point, we have chosen an event-based strategy to obtain an explicit target. Immunity is mediated by pro-inflammatory cytokines like TNFα. TNFα-mediated inflammation, obesity, and insulin resistance are associated. Therefore we chose to explore the role of RNF213 in TNFα-mediated inflammation in macrophages and inflammation-mediated insulin-resistance in adipocytes. We have observed an enhancement of RNF213 gene expression by LPS mediated pro-inflammatory stimuli and suppression by PPARγ-mediated anti-inflammatory, insulin-sensitizing stimuli in macrophages, and also in adipocytes. Administration of the pro-inflammatory cytokine TNFα was able to impede the reduction in RNF213 expression during adipogenesis and this effect was observed to be mediated by PTP1B. Inactivation of PTP1B abolished RNF213 expression which in turn enhanced the adipogenesis process through enhanced PPARγ. Constitutive expression of RNF213 suppressed the adipocyte differentiation by the inhibition of PPARγ. We could show the regulation of RNF213 by TNFα/PTP1B pathway and PPARγ. The constitutive expression of RNF213 during adipogenesis appears to be an adipostatic measure that obese patients acquire to inhibit further adipogenesis. This is verified in silico by analyzing the gene expression data obtained from the Gene Expression Omnibus database, which showed a higher expression of RNF213 in adipose tissue samples of obese people. Overall this study gives new insights into the TNFα-mediated pathway in adipogenesis and suggests the role of RNF213 in adipogenesis via this pathway.
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Affiliation(s)
- Priyanka Sarkar
- 206, Structural Biology Lab, Centre for Biomedical Research, School of Biosciences & Technology, Vellore Institute of Technology, Vellore 632014, India
| | - Kavitha Thirumurugan
- 206, Structural Biology Lab, Centre for Biomedical Research, School of Biosciences & Technology, Vellore Institute of Technology, Vellore 632014, India.
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Dos Santos LD, Froes TQ, Contin de Melo MC, Petto de Souza GE, Soares DDM, Castilho MS. Triazol-phenyl antipyretic derivatives inhibit mPGES-1 mRNA levels in LPS-Induced RAW 264.7 macrophage cells. Antiinflamm Antiallergy Agents Med Chem 2020; 20:271-281. [PMID: 33292158 DOI: 10.2174/1871523019999201208202831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Microsomal prostaglandin E synthase-1 (mPGES-1) catalyzes the terminal step of prostaglandin E2 (PGE2) production, which plays an important role in the regulation of febrile response. In our previous work, ligand-based pharmacophore models, built with mPGES-1 inhibitors, were employed to identify a novel series of compounds that reduce the febrile response in rats. OBJECTIVES Evaluate the mechanism of action of the most active compound (1). METHODS For in vivo assays, rats were pretreated with the antipyretic compounds 1-8, 30 min before LPS injection. For in vitro assays, RAW 264.7 macrophage cells were incubated with the antipyretic compounds 1-8 for 1 hour before LPS stimu-lus. After 16 h, quantitative real-time PCR was carried out. Additionally, the PGE2 concentration in hypothalamus was quantified by ELISA and the inhibitory effect of N-cyclopentyl-N'-[3-(3-cyclopropyl-1H-1,2,4-triazol-5-yl)phenyl]ethanediamide (1) over human COX-2 enzymatic activity was determined with a COX Colorimetric Inhibitor Screening Assay Kit. RESULTS Compound 1 and CAY10526 have comparable efficacy to reduce the febrile response when injected i.v. (com-pound 1: 63.10%, CAY10526: 70.20%). Moreover, compound 1 significantly reduces the mPGES-1 mRNA levels, in RAW264.7 cells, under inflammatory conditions. A chemically-similar compound (8- ) also significantly reduces the mRNA levels of the gene target. On the other hand, compounds 6 and 7, which are also somewhat similar to compound 1, do not, significantly, impact mPGES-1 mRNA levels. CONCLUSIONS PGE2 concentration reduction in hypothalamus, due to compound 1 central injection, is related to decreased mPGES-1 mRNA levels but not to COX-2 inhibition (IC50> 50 μM). Therefore, compound 1 is a promising lead for inno-vative antipyretic drug development.
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Affiliation(s)
- Lenisa Dandara Dos Santos
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Thamires Quadros Froes
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Miriam Cristina Contin de Melo
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP,. Brazil
| | - Gloria Emília Petto de Souza
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café s/n, 14040-903, Ribeirão Preto, SP,. Brazil
| | - Denis de Melo Soares
- Laboratory of Pharmacology of inflammation and fever, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
| | - Marcelo Santos Castilho
- Laboratory of Bioinformatics and Molecular Modeling, Faculty of Pharmacy, Federal University of Bahia, Av. Barão de Jeremoabo s/n, Salvador, BA,. Brazil
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Lin CH, Chang YC, Chang TK, Huang CH, Lu YC, Huang CH, Chen MJ. Enhanced expression of coxsackievirus and adenovirus receptor in lipopolysaccharide-induced inflammatory macrophages is through TRIF-dependent innate immunity pathway. Life Sci 2020; 265:118832. [PMID: 33259866 DOI: 10.1016/j.lfs.2020.118832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/17/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
AIMS Inflammatory macrophages have been proposed as a therapeutic target for joint disorders caused by inflammation. This study aimed to investigate the expression and regulation of coxsackievirus-adenovirus receptor (CAR) in lipopolysaccharide (LPS)-stimulated inflammatory macrophages whereby to evaluate the feasibility of virus-directed enzyme prodrug therapy (VDEPT). MAIN METHODS Macrophage cell lines (RAW264.7 and J774A.1) and primary macrophage cells derived from rat spleen were used to evaluate the expression of CAR protein or CAR mRNA. Specific inhibitors for TLR4 pathway were used to investigate the regulation of CAR expression. CAR expression in rat joints was documented by immunohistochemistry. Conditionally replicating adenovirus, CRAd-EGFP(PS1217L) or CRAd-NTR(PS1217H6), and non-replicating adenovirus CTL102 were used to transduce genes for enhanced green fluorescent protein (EGFP) or nitroreductase (NTR), respectively. The expression of EGFP, NTR, and the toxicity induced by CB1954 activation were evaluated. KEY FINDINGS The in vitro experiments revealed that CAR upregulation was mediated through the TLR4/TRIF/IRF3 pathway in LPS-stimulated inflammatory macrophage RAW264.7 and J774A.1 cells. The inflammatory RAW264.7 cells upregulated CAR expression following LPS stimulation, leading to higher infectability, increased NTR expression, and enhanced sensitization to CB1954. In animal experiments, the induction of CAR expression was observed in the CD68-expressing primary macrophages and in the CD68-expressing macrophages within joints following LPS stimulation. SIGNIFICANCE In conclusion, we report an enhanced CAR expression in inflammatory macrophages in vitro and in vivo through the immune response elicited by LPS. Thus, the TLR4/TRIF/IRF3 pathway of macrophages, when activated, could facilitate the therapeutic application of adenovirus-mediated VDEPT.
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Affiliation(s)
- Chi-Hsin Lin
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan City, Taiwan
| | - Yuan-Ching Chang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Ting-Kuo Chang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Chang-Hung Huang
- Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Yung-Chang Lu
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Chun-Hsiung Huang
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Department of Orthopedics, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Ming-Jen Chen
- Department of Surgery, MacKay Memorial Hospital, Department of Medicine, MacKay Medical College, New Taipei City, Taiwan.
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Frazier K, Frith M, Harris D, Leone VA. Mediators of Host–Microbe Circadian Rhythms in Immunity and Metabolism. BIOLOGY 2020; 9:biology9120417. [PMID: 33255707 PMCID: PMC7761326 DOI: 10.3390/biology9120417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/20/2020] [Indexed: 12/27/2022]
Abstract
Simple Summary Circadian rhythms serve as the body’s internal metronome, driving responses to environmental cues over a 24-h period. Essential to nearly all life forms, the core circadian clock gene network drives physiological outputs associated with metabolic and immune responses. Modern-day disruptions to host circadian rhythms, such as shift work and jet lag, result in aberrant metabolic responses and development of complex diseases, including obesity and Type 2 Diabetes. These complex diseases are also impacted by interactions between gut microbes and the host immune system, driving a chronic low-grade inflammatory response. Gut microbes exhibit circadian dynamics that are closely tied to host circadian networks and disrupting microbial rhythmicity contributes to metabolic diseases. The underlying mediators that drive communication between host metabolism, the immune system, gut microbes, and circadian networks remain unknown, particularly in humans. Here, we explore the current state of knowledge regarding the transkingdom control of circadian networks and discuss gaps and challenges to overcome to push the field forward from the preclinical to clinical setting. Abstract Circadian rhythms are essential for nearly all life forms, mediated by a core molecular gene network that drives downstream molecular processes involved in immune function and metabolic regulation. These biological rhythms serve as the body’s metronome in response to the 24-h light:dark cycle and other timed stimuli. Disrupted circadian rhythms due to drastic lifestyle and environmental shifts appear to contribute to the pathogenesis of metabolic diseases, although the mechanisms remain elusive. Gut microbiota membership and function are also key mediators of metabolism and are highly sensitive to environmental perturbations. Recent evidence suggests rhythmicity of gut microbes is essential for host metabolic health. The key molecular mediators that transmit rhythmic signals between microbes and host metabolic networks remain unclear, but studies suggest the host immune system may serve as a conduit between these two systems, providing homeostatic signals to maintain overall metabolic health. Despite this knowledge, the precise mechanism and communication modalities that drive these rhythms remain unclear, especially in humans. Here, we review the current literature examining circadian dynamics of gut microbes, the immune system, and metabolism in the context of metabolic dysregulation and provide insights into gaps and challenges that remain.
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Affiliation(s)
- Katya Frazier
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Mary Frith
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Medical Scientist Training Program, University of Chicago, Chicago, IL 60637, USA
| | - Dylan Harris
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Vanessa A. Leone
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
- Correspondence: ; Tel.: +1-608-262-5551
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27
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Shatoor AS, Al Humayed S. The Protective Effect of Crataegus aronia Against High-Fat Diet-Induced Vascular Inflammation in Rats Entails Inhibition of the NLRP-3 Inflammasome Pathway. Cardiovasc Toxicol 2020; 20:82-99. [PMID: 31183600 DOI: 10.1007/s12012-019-09534-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This study investigated whether the whole-plant aqueous extract of Crataegus aronia (C. aronia) could protect against or alleviate high-fat diet (HFD)-induced aortic vascular inflammation in rats by inhibiting the NLRP-3 inflammasome pathway and examined some mechanisms of action with respect to its antioxidant and hypolipidemic effects. Adult male Wistar rats were divided into five groups (n = 6/each): standard diet (10% fat) fed to control rats, control + C. aronia (200 mg/kg), HFD (40% fat), HFD + C. aronia, and HFD post-treated with C. aronia. The HFD was fed for 8 weeks and C. aronia was administered orally for 4 weeks. In addition, isolated macrophages from control rats were pre-incubated with two doses of C. aronia (25 and 50 μg/mL) with or without lipopolysaccharide (LPS) stimulation. Only in HFD-fed rats, co- and post-C. aronia therapy lowered circulatory levels of LDL-C and ox-LDL-c and aortic protein levels of LOX-1 and CD36. C. aronia also inhibited the nuclear accumulation of NF-κB and lowered protein levels of NLRP-3, caspase-1, and mature IL-1β. In vitro, in the absence of ox-LDL-c, C. aronia led to reduced nuclear levels of NF-κB, ROS generation, and protein NLRP-3 levels, in both LPS-stimulated and unstimulated macrophages, in a dose-dependent manner. However, protein levels of LOX-1 were not affected by C. aronia in unstimulated cells. In conclusion, C. aronia inhibits the NLRP-3 inflammasome pathway, induced by HFD feeding in the aorta of rats, mainly by its hypolipidemic effect and in vitro, in LPS-stimulated macrophages, by its antioxidant effect.
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Affiliation(s)
- Abdullah S Shatoor
- Department of Medicine, Cardiology Section, College of Medicine, King Khalid University, Abha, 61421, Saudi Arabia.
| | - Suliman Al Humayed
- Department of Medicine, College of Medicine, King Khalid University, Abha, 61421, Saudi Arabia
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28
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Ayaz F, Colak SG, Ocakoglu K. Investigating the Immunostimulatory and Immunomodulatory Effects of cis and trans Isomers of Ruthenium Polypyridyl Complexes on the Mammalian Macrophage‐Like Cells. ChemistrySelect 2020. [DOI: 10.1002/slct.202002784] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Furkan Ayaz
- Department of Biotechnology Faculty of Arts and Science Mersin University Mersin 33110 Turkey
| | - Suleyman Gokhan Colak
- Department of Natural and Mathematical Sciences Faculty of Engineering Tarsus University 33400 Tarsus Turkey
| | - Kasim Ocakoglu
- Department of Natural and Mathematical Sciences Faculty of Engineering Tarsus University 33400 Tarsus Turkey
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29
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Gu I, Brownmiller C, Stebbins NB, Mauromoustakos A, Howard L, Lee SO. Berry Phenolic and Volatile Extracts Inhibit Pro-Inflammatory Cytokine Secretion in LPS-Stimulated RAW264.7 Cells through Suppression of NF-κB Signaling Pathway. Antioxidants (Basel) 2020; 9:antiox9090871. [PMID: 32942640 PMCID: PMC7554842 DOI: 10.3390/antiox9090871] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/31/2020] [Accepted: 08/26/2020] [Indexed: 12/20/2022] Open
Abstract
Berries are a rich source of phytochemicals, especially phenolics well known for protective activity against many chronic diseases. Berries also contain a complex mixture of volatile compounds that are responsible for the unique aromas of berries. However, there is very limited information on the composition and potential health benefits of berry volatiles. In this study, we isolated phenolic and volatile fractions from six common berries and characterized them by HPLC/HPLC-MS and GC/GC-MS, respectively. Berry phenolic and volatile fractions were evaluated for an anti-inflammatory effect using lipopolysaccharide (LPS)-stimulated RAW264.7 macrophage cells by measuring levels of pro-inflammatory cytokines and the nuclear factor-kappa B (NF-κB) signaling pathway. Results showed that LPS-induced excessive production of nitric oxide (NO), prostaglandin E2 (PGE2), cyclooxygenase-2 (COX-2), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), which were inhibited by berry phenolic and volatile extracts. Moreover, berry phenolic and volatile extracts reduced the nuclear translocation of NF-κB by blocking the phosphorylation of p65 and degradation of IκBα. These findings showed that berry volatiles from six berries had comparable anti-inflammatory effects to berry phenolics through the suppression of pro-inflammatory mediators and cytokines expression via NF-κB down-regulation, despite being present in the fruit at a lower concentration.
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Affiliation(s)
- Inah Gu
- Department of Food Science, University of Arkansas, 2650 N. Young Ave., Fayetteville, AR 72704, USA; (I.G.); (C.B.); (N.B.S.); (L.H.)
| | - Cindi Brownmiller
- Department of Food Science, University of Arkansas, 2650 N. Young Ave., Fayetteville, AR 72704, USA; (I.G.); (C.B.); (N.B.S.); (L.H.)
| | - Nathan B. Stebbins
- Department of Food Science, University of Arkansas, 2650 N. Young Ave., Fayetteville, AR 72704, USA; (I.G.); (C.B.); (N.B.S.); (L.H.)
| | - Andy Mauromoustakos
- Agricultural Statistics Laboratory, University of Arkansas, Fayetteville, AR 72701, USA;
| | - Luke Howard
- Department of Food Science, University of Arkansas, 2650 N. Young Ave., Fayetteville, AR 72704, USA; (I.G.); (C.B.); (N.B.S.); (L.H.)
| | - Sun-Ok Lee
- Department of Food Science, University of Arkansas, 2650 N. Young Ave., Fayetteville, AR 72704, USA; (I.G.); (C.B.); (N.B.S.); (L.H.)
- Correspondence: ; Tel.: +1-479-575-6921
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So BR, Bach TT, Paik JH, Jung SK. Kmeria duperreana (Pierre) Dandy Extract Suppresses LPS-Induced iNOS and NO via Regulation of NF-κB Pathways and p38 in Murin Macrophage RAW 264.7 Cells. Prev Nutr Food Sci 2020; 25:166-172. [PMID: 32676468 PMCID: PMC7333012 DOI: 10.3746/pnf.2020.25.2.166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/21/2020] [Indexed: 12/25/2022] Open
Abstract
Development of anti-inflammatory products remains in high demand due to the incidence of inflammatory diseases, including diabetes, cardiovascular disease, and neurodegenerative diseases. In this study, we examined the potential anti-inflammatory activity of the nutraceutical, Kmeria duperreana (Pierre) Dandy extract (KDE). We evaluated the ability of KDE to inhibit lipopolysaccharide (LPS)-induced inflammatory markers, including nitric oxide (NO), nuclear factor kappa-B, and mitogen-activated protein kinases, in RAW 264.7 cells. KDE suppressed LPS-induced nitrite production and inducible NO synthase (iNOS) expression in RAW 264.7 cells, but has no effect on cyclooxygenase-2 expression. KDE also suppressed LPS-induced phosphorylation of p65, IκB kinase, and p38 in RAW 264.7 cells. Through Western blot assays and immunofluorescence results, we showed that KDE suppresses LPS-induced p65 translocation from cytosol to the nucleus in RAW 264.7 cells. Moreover, KDE suppressed mRNA expression of LPS-induced interleukin (IL)-1β in RAW 264.7 cells, but had no effect on mRNA expression of IL-6 or tumor necrosis factor-a. These results demonstrate that KDE may be a promising anti-inflammatory nutraceutical. KDE may act by suppressing iNOS expression and subsequent NO production by inhibiting phosphorylation of p65 and p38 and suppressing translocation of p65 from the cytosol to the nucleus.
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Affiliation(s)
- Bo Ram So
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Korea
| | - Tran The Bach
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology (VAST), Ha Noi 100000, Vietnam
| | - Jin Hyub Paik
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea
| | - Sung Keun Jung
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Korea.,Institute of Agricultural Science & Technology, Kyungpook National University, Daegu 41566, Korea
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Kim MJ, Kim JG, Sydara KM, Lee SW, Jung SK. Croton hirtus L'Hér Extract Prevents Inflammation in RAW264.7 Macrophages Via Inhibition of NF-κB Signaling Pathway. J Microbiol Biotechnol 2020; 30:490-496. [PMID: 31752062 PMCID: PMC9728262 DOI: 10.4014/jmb.1908.08045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Consumption of anti-inflammatory nutraceuticals may help treat or prevent inflammation-related illnesses such as diabetes, cardiovascular disease, and cancer. This study evaluated the effect of Croton hirtus L'Hér extract (CHE) on lipopolysaccharide (LPS)-induced nitric oxide (NO) production and nuclear factor kappa-B (NF-κB) signaling cascades. CHE significantly suppressed LPS-induced NO production and inducible nitric oxide synthase (iNOS) expression in RAW264.7 macrophages, although cyclooxygenase (COX)-2 expression was not affected. CHE also suppressed LPS-induced IκB kinase (IKK), IκB, and p65 phosphorylation in RAW264.7 cells. Western blot and immunofluorescence assays of cytosol and nuclear p65 and the catalytic subunit of NF-κB showed that CHE suppressed LPS-induced p65 translocation from the cytosol to the nucleus. CHE also suppressed LPS-induced Interleukin (IL)-6 and tumor necrosis factor (TNF)-α production in RAW264.7 cells. These results suggest that CHE prevents NO-mediated inflammation by suppressing NF-κB and inflammatory cytokines.
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Affiliation(s)
- Min Jeong Kim
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Ju Gyeong Kim
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Kong Many Sydara
- Ministry of Health, Institute of Traditional Medicine, Vientiane 116, Lao PDR
| | - Sang Woo Lee
- International Biological Material Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Sung Keun Jung
- School of Food Science and Biotechnology, Kyungpook National University, Daegu 41566, Republic of Korea,Institute of Agricultural Science & Technology, Kyungpook National University, Daegu 41566, Republic of Korea,Corresponding author Phone: +82 53 950 7764 Fax: +82 53 950 7762 E-mail:
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32
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Ayaz F. Ruthenium Bipyridyl Dithiocyanate Complex Exerted Adjuvant Activity on the Activated Mammalian Macrophages in vitro. Inflammation 2020; 43:1120-1126. [PMID: 32076941 DOI: 10.1007/s10753-020-01199-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A cell's function can be regulated through its mechanism, and there has been a growing body of literature on how immune cells' metabolism shapes its overall immune response. Manipulation of the cells metabolic activity through a biocompatible material would present new venues to the field of medicine. These agents are known as immunomodulatory and immunostimulatory reagents. They can either stimulate the immune response in a disease case where the immune response is lacking the strength or they can determine the nature and strength of the immune response as an immunomodulator according to our needs to cope with certain disorders. In our recent studies, we have been examining different kinds of materials on the macrophages in order to delineate their immunostimulatory or immunomodulatory potentials. Ruthenium-based materials have gathered our attention due to their ability to get involved into the electron mobility processes in the solar cells. In line with our expectations, probably by interfering the electron transport processes of the macrophages, ruthenium bipyridyl dithiocyanate complex had a stark immunomodulatory function on the LPS-activated mammalian macrophages in vitro. Our results support that it can be utilized as an adjuvant in the new generation vaccines.
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Affiliation(s)
- Furkan Ayaz
- Department of Biotechnology, Faculty of Arts and Science, Mersin University, 33110, Mersin, Turkey.
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Sobhani M, Farzaei MH, Kiani S, Khodarahmi R. Immunomodulatory; Anti-inflammatory/antioxidant Effects of Polyphenols: A Comparative Review on the Parental Compounds and Their Metabolites. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1717523] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mahsa Sobhani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sarah Kiani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Ayaz F. Heteroleptic Ruthenium Polypyridyl Complex Had Differential Effects on the Production of Pro-inflammatory Cytokines TNFα, IL1β, and IL6 by the Mammalian Macrophages In Vitro. Inflammation 2020; 42:1383-1388. [PMID: 30848409 DOI: 10.1007/s10753-019-00999-y] [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: 12/17/2022]
Abstract
Modulation of the immune system has gathered more attention in the field of medicine due to the immense potential that it presents. Our immune system has important roles against cancer to infectious diseases, as well as in the development of autoimmune disorders. Therefore, being able to manipulate our immune system cells would enable us to determine the type and strength of the immune response to certain danger stimuli. Macrophages play an important role in the regulation of the immune system by producing cytokines, chemokines and by presenting antigens to other immune system cells to enable their activation; in our study, we focused on their in vitro activity in terms of pro-inflammatory cytokine production. In order to screen new immunomodulatory or immunostimulatory drug candidates, we examined the effect of ruthenium polypyridyl-based complex K30 that is used in solar cells as photosensitizer. Due to its electron transfer capacity, this material has potential to change the electron transfer reactions therefore could alter the function of the cells through metabolic changes at a cellular level. Our results suggest that K30 was differentially regulating the secretion levels of the pro-inflammatory cytokines by the LPS-activated mammalian macrophages, while it did not stimulate the macrophages by itself. K30 has an anti-inflammatory potential while lacking the immunostimulatory effect in our in vitro results and has potential to be used as anti-inflammatory drug molecule in metallic implants of the fractured bones to prevent damaging inflammatory environment and enable more efficient transplant and healing.
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Affiliation(s)
- Furkan Ayaz
- Department of Biotechnology, Faculty of Arts and Science, Mersin University, 33110, Mersin, Turkey.
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Novel Copper Bearing Schiff Bases with Photodynamic Anti-Inflammatory and Anti-Microbial Activities. Appl Biochem Biotechnol 2019; 191:716-727. [PMID: 31853876 DOI: 10.1007/s12010-019-03223-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/05/2019] [Indexed: 12/17/2022]
Abstract
Schiff bases and their copper complexes have been previously studied for their anti-inflammatory, anti-tumor as well as anti-microbial activities. Schiff bases can be derivatized to gain photoluminiscence capacity. This property of the schiff bases enables the transfer of the electrons upon absorption of the light at a specific wavelength. In this study, we exploited this attribute of novel copper bearing schiff bases and tested their photodynamic biological activities. These compounds exerted photodynamic anti-inflammatory activities on the in vitro activated mammalian macrophages. Compared with salicylic acid control groups, these novel schiff bases had stronger activity which became more prominent with photo-induction. Moreover, they also had anti-microbial activity on gram negative bacteria E.coli and gram positive bacteria S.aureus.This anti-microbial activity was stronger than that of Neomycin on both bacterial strains. Our results suggest their potential use as anti-inflammatory and anti-microbial agents both in the dark as well as after photo-induction.
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Madhubala V, Pugazhendhi A, Thirunavukarasu K. Cytotoxic and immunomodulatory effects of the low concentration of titanium dioxide nanoparticles (TiO2 NPs) on human cell lines - An in vitro study. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Da Silva LAL, Sandjo LP, Fratoni E, Kinoshita Moon YJ, Dalmarco EM, Biavatti MW. A single-step isolation by centrifugal partition chromatography of the potential anti-inflammatory glaucolide B from Lepidaploa chamissonis. J Chromatogr A 2019; 1605:460362. [PMID: 31320134 DOI: 10.1016/j.chroma.2019.460362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/05/2019] [Accepted: 07/08/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Layzon Antonio Lemos Da Silva
- Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Louis P Sandjo
- Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Eduarda Fratoni
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Yeo Jim Kinoshita Moon
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Eduardo Monguilhott Dalmarco
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Maique Weber Biavatti
- Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis, SC, 88040-900, Brazil.
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Faulón Marruecos D, Saleh LS, Kim HH, Bryant SJ, Schwartz DK, Kaar JL. Stabilization of Fibronectin by Random Copolymer Brushes Inhibits Macrophage Activation. ACS APPLIED BIO MATERIALS 2019; 2:4698-4702. [DOI: 10.1021/acsabm.9b00815] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Nguyen-Ngo C, Willcox JC, Lappas M. Anti-Diabetic, Anti-Inflammatory, and Anti-Oxidant Effects of Naringenin in an In Vitro Human Model and an In Vivo Murine Model of Gestational Diabetes Mellitus. Mol Nutr Food Res 2019; 63:e1900224. [PMID: 31343820 DOI: 10.1002/mnfr.201900224] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 06/25/2019] [Indexed: 11/11/2022]
Abstract
SCOPE Gestational diabetes mellitus (GDM), which affects up to 20% of pregnant women, is associated with maternal peripheral insulin resistance, low-grade inflammation, and oxidative stress. The flavonoid naringenin has potent anti-diabetic, anti-inflammatory, and anti-oxidative properties; however, its effects in GDM remain unknown. The study aimed to determine the effects of naringenin on glucose metabolism, inflammation, and oxidative stress associated with GDM both in vitro and in vivo. METHODS AND RESULTS In vitro, human tissue samples obtained at term elective Caesarean section are stimulated with tumour necrosis factor alpha (TNF) to develop a GDM-like environment. Naringenin treatment significantly improves TNF-impaired glucose uptake in skeletal muscle. In placenta and visceral adipose tissue (VAT), naringenin significantly reduces expression of pro-inflammatory cytokines and chemokines and increases antioxidant mRNA expression. Mechanistically, naringenin suppresses nuclear factor κB activation. In vivo, pregnant heterozygous db/+ mice are used to model GDM. Daily intraperitoneal injections of GDM mice with naringenin from gestational day 10-17 significantly improve glucose tolerance, reduces IL1A mRNA expression, and increases antioxidant mRNA expression in placenta, VAT, and subcutaneous adipose tissue. CONCLUSION Naringenin is shown to improve insulin sensitivity, inflammation, and oxidative stress associated with GDM and shows promise as a novel preventive therapeutic.
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Affiliation(s)
- Caitlyn Nguyen-Ngo
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Heidelberg, 3084, Victoria, Australia.,Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, 3084, Victoria, Australia
| | - Jane C Willcox
- School of Allied Health, College of Science, Health and Engineering, La Trobe University, Bundoora, 3086, Victoria, Australia
| | - Martha Lappas
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Heidelberg, 3084, Victoria, Australia.,Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, 3084, Victoria, Australia
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Bioactive Exopolysaccharides Reveal Camellia oleifera Infected by the Fungus Exobasidium gracile Could Have a Functional Use. Molecules 2019; 24:molecules24112048. [PMID: 31146421 PMCID: PMC6600561 DOI: 10.3390/molecules24112048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 12/29/2022] Open
Abstract
Camellia oleifera is an important Chinese commercial crop. Camellia oleifera can display abnormal leaves due to infection by the parasitic fungus Exobasidium gracile. Exobasidium gracile was isolated from infected leaves and used in fermentation, and exopolysaccharides EP0-1 and EP0.5-1 were purified from the fermentation broth. EP0-1 was an alkaline polysaccharide consisting mainly of the linkages α-d-Manp(1→, →2)-α-d-Manp(1→ and →6)-α-d-Manp(1→, →3)-α-d-Glcp(1→ and→4)-α-d-Glcp(1→, terminal β-d-Galf, (1→5)-β-d-Galf, and terminal β-D-GlcN(1→. EP0.5-1 was an acidic galactofuranose-containing polysaccharide. It contained the linkages of α-d-Manp(1→, →2)-α-d-Manp(1→, →6)-α-d-Manp(1→,→2, 6)-α-d-Manp(1→, →4)-α-d-Glcp(1→, and →4)-α-d-GlcUA(1→. Galactofuranose linkages were composed of terminal β-d-Galf, (1→6)-β-d-Galf and (1→2)-β-d-Galf. Exobasidium gracile exopolysaccharides displayed significant immunoregulatory activity by activating macrophages. This research indicates that infected leaves from Camellia oleifera including the exopolysaccharides produced by the parasitic fungus Exobasidium gracile by are worth further investigation as a functional product.
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Ayaz F, Ersan RH, Algul O. Symmetric bis-benzoxazole-based chemicals exerted anti-inflammatory effect on danger signal LPS-stimulated macrophages. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02398-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Liu H, Lu W, He H, Wu J, Zhang C, Gong H, Yang C. Inflammation-dependent overexpression of c-Myc enhances CRL4 DCAF4 E3 ligase activity and promotes ubiquitination of ST7 in colitis-associated cancer. J Pathol 2019; 248:464-475. [PMID: 30945288 DOI: 10.1002/path.5273] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 03/04/2019] [Accepted: 04/01/2019] [Indexed: 02/05/2023]
Abstract
Inflammation is well known as an important driver of the initiation of colitis-associated cancer (CAC). Some cytokines, such as IL-6 and TNF-α can activate expression of the oncogene c-Myc (MYC) and regulate its downstream effects. Cullin-RING E3 Ligases (CRLs) are emerging as master regulators controlling tumorigenesis. Here, we demonstrate that two cullin genes, CUL4A and CUL4B, but not other members, are specifically overexpressed in CAC tumour samples and positively correlate with levels of the proinflammatory cytokines IL-1β and IL-6. In vitro experiments revealed that the transcription factor c-Myc can specifically activate the expression of CUL4A and CUL4B by binding to a conserved site (CACGTG) located in their promoters. Additionally, we found that both CUL4A and CUL4B can form an E3 complex with DNA damage-binding protein 1 (DDB1) and DDB1-CUL4-associated factor 4 (DCAF4). In vitro and in vivo ubiquitination analyses indicate that CRL4DCAF4 E3 ligase specifically directs degradation of ST7 (suppression of tumorigenicity 7). Overexpression of c-Myc in human colon epithelial cells resulted in the accumulation of CUL4A, CUL4B and DCAF4, but degradation of ST7. In contrast, knockdown of c-Myc, CUL4A or CUL4B in the colon adenocarcinoma cell line HT29 caused accumulation of ST7 and inhibition of cell proliferation, colony formation ability and in vivo tumour growth. Collectively, our results provide in vitro and in vivo evidence that c-Myc regulates CRL4DCAF4 E3 ligase activity to mediate ubiquitination of ST7, whose presence is physiologically essential for CAC tumorigenesis. © 2019 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Hong Liu
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Wenzhu Lu
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Hongbo He
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Jin Wu
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Caiguo Zhang
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Hanlin Gong
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Chunmei Yang
- Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, Chengdu, China
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Ayaz F, Yuzer A, Ince M. From peripherally unsubstituted subphthalocyanines with anti-inflammatory activity on macrophages to tri-iodo derivatives with adjuvant and immunostimulatory functions. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424618501134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study we evaluated the impact of iodine substitution on the ability of subphthalocyanines (SubPc) to stimulate or regulate the function of macrophages. Previous studies have focused on the usage of phthalocyanines and their derivatives as treatment options against different types of cancer. In order to obtain better prognosis rates, their possible effects on the immune system cells should be delineated. Unique subphthalocyanines were designed and synthesized by our group and a derivative was generated via iodine substitution. In our study we further tested the effects of the new Subpcs on macrophage cell lines. Macrophages play an important role in the immune system through cytokine production and antigen presentation to other types of the immune system cells. They can define the type and the strength of the immune responses against a particular danger signal. Based on pro-inflammatory cytokine (TNF[Formula: see text], IL1[Formula: see text] and IL6) production levels by macrophages, unsubstituted SubPc had anti-inflammatory properties. However, iodine substitution on the same SubPc created a completely opposite effect since these iodo-substituted SubPc exerted an immunostimulatory effect on macrophages based on significant increases in the pro-inflammatory cytokine production levels compared to the untreated controls. While SubPcs can be used to suppress the pro-inflammatory activities of the macrophages, iodine-substituted SubPcs have potentials to be used as adjuvants and immunostimulatory molecules.
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Affiliation(s)
- Furkan Ayaz
- Department of Biotechnology, Faculty of Arts and Science, Mersin University, Mersin, 33110, Turkey
| | - Abdulcelil Yuzer
- Advanced Technology Research & Application Center, Mersin University, Ciftlikkoy Campus, TR-33343 Mersin, Turkey
| | - Mine Ince
- Tarsus University, Department of Energy Systems Engineering Faculty of Tarsus Technology, 33400 Mersin, Turkey
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Ayaz F, Ugur N, Ocakoglu K, Ince M. Photo-induced anti-inflammatory activities of chloro substituted subphthalocyanines on the mammalian macrophage in vitro. Photodiagnosis Photodyn Ther 2019; 25:499-503. [DOI: 10.1016/j.pdpdt.2019.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 12/12/2022]
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Ayaz F, Alaş MÖ, Oğuz M, Genç R. Aluminum doped carbon nanodots as potent adjuvants on the mammalian macrophages. Mol Biol Rep 2019; 46:2405-2415. [DOI: 10.1007/s11033-019-04701-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/12/2019] [Indexed: 02/03/2023]
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Trichur Khabeer S, Prashant A, Haravey Krishnan M. Dietary fatty acids from pomegranate seeds (Punica granatum) inhibit adipogenesis and impact the expression of the obesity-associated mRNA transcripts in human adipose-derived mesenchymal stem cells. J Food Biochem 2018; 43:e12739. [PMID: 31353555 DOI: 10.1111/jfbc.12739] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 10/10/2018] [Accepted: 11/04/2018] [Indexed: 11/30/2022]
Abstract
Obesity is a metabolic disorder that manifests into various forms. Recent studies have indicated that the pomegranate (Punica granatum) seed oil (PSO) has many biologically active components that help in controlling diet-induced obesity and insulin resistance. However, its impact on the adipogenic differentiation of human adipose-derived mesenchymal stem cells (HADMSC) remains unclear. Here we have attempted to study the anti-obesity potential of SHAMstat3pg, a fatty acid composite extracted from PSO. It is composed of three dietary fatty acids: punicic acid [(9Z,11E,13Z)-9,11,13-Octadecatrienoic acid], oleic acid [Cis-9-Octadecenoic acid], and linoleic acid [(9Z,12Z)-octadeca-9,12-dienoic acid]. In this study, we discuss the impact of the fatty acids on adipogenesis, inflammation, glucose uptake, and mitochondrial ATP production. The impact of SHAMstat3pg on the expression of various obesity-associated protein and mRNA transcripts in HADMSC was also analyzed. The results indicate that exposure to 10 µg/ml of SHAMstat3pg (24 hr) inhibited adipogenesis of HADMSC, ameliorated inflammation, attenuated ATP production, and glucose uptake. Also, the extract favorably regulated the mRNA expression of the studied obesity-associated gene transcripts. PRACTICAL APPLICATIONS: SHAMstat3pg has the potential to serve as a multi-targeted therapy for the management of obesity. This study demonstrated that the dietary fatty acids inhibited the differentiation of preadipocytes to adipocytes. SHAMstat3pg has also shown to have a favorable impact on the expression of the obesity-linked proteins and genes in HADMSC that are associated with adipogenesis, inflammation, satiety, energy intake/expenditure (central and peripheral signaling molecules). The study gives an overview of the vast number of genes impacted by the treatment with SHAMstat3pg paving the way for future studies to demonstrate the exact mode of action of how dietary fatty acids can help manage obesity, insulin resistance, and type 2 diabetes.
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Affiliation(s)
- Shamsiya Trichur Khabeer
- Department of Food Protectants & Infestation Control, Central Food Technological Research Institute (CSIR - CFTRI), Mysore, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Akila Prashant
- Centre of Excellence in Molecular Biology and Regenerative Medicine, Department of Biochemistry, JSS Medical College, JSS Academy of Higher Education and Research, Mysore, India
| | - Manonmani Haravey Krishnan
- Department of Food Protectants & Infestation Control, Central Food Technological Research Institute (CSIR - CFTRI), Mysore, India
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Ayaz F, Yuzer A, Ince M. Immunostimulatory effect of Zinc Phthalocyanine derivatives on macrophages based on the pro-inflammatory TNFα and IL1β cytokine production levels. Toxicol In Vitro 2018; 53:172-177. [DOI: 10.1016/j.tiv.2018.08.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/03/2018] [Accepted: 08/21/2018] [Indexed: 11/27/2022]
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Teng J, Li Y, Yu W, Zhao Y, Hu X, Tao NP, Wang M. Naringenin, a common flavanone, inhibits the formation of AGEs in bread and attenuates AGEs-induced oxidative stress and inflammation in RAW264.7 cells. Food Chem 2018; 269:35-42. [DOI: 10.1016/j.foodchem.2018.06.126] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/24/2018] [Accepted: 06/25/2018] [Indexed: 12/13/2022]
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LncRNA HOTAIR regulates lipopolysaccharide-induced cytokine expression and inflammatory response in macrophages. Sci Rep 2018; 8:15670. [PMID: 30353135 PMCID: PMC6199307 DOI: 10.1038/s41598-018-33722-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/02/2018] [Indexed: 12/16/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are emerging as major regulators of a variety of cell signaling processes. Many lncRNAs are expressed in immune cells and appear to play critical roles in the regulation of immune response. Here, we have investigated the potential role of a well-known lncRNA, HOTAIR, in inflammatory and immune response. Our studies demonstrate that HOTAIR expression is induced in immune cells (macrophages) upon treatment with lipopolysaccharide (LPS). Knockdown of HOTAIR reduces NF-κB-mediated inflammatory gene and cytokine expression in macrophages. Inhibition of NF-κB resulted in down-regulation of LPS-induced expression of HOTAIR as well as IL-6 and iNOS expression. We further demonstrated that HOTAIR regulates activation of NF-κB and its target genes (IL-6 and iNOS) expression via facilitating the degradation of IκBα. HOTAIR knockdown reduces the expression of NF-κB target gene expression via inhibiting the recruitment of NF-κB and associated cofactors at the target gene promoters. Taken together, our findings suggest that HOTAIR is a critical player in NF-κB activation in macrophages suggesting its potential functions in inflammatory and immune response.
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Ruthenium pyridyl thiocyanate complex increased the production of pro-inflammatory TNFα and IL1β cytokines by the LPS stimulated mammalian macrophages in vitro. Mol Biol Rep 2018; 45:2307-2312. [PMID: 30284682 DOI: 10.1007/s11033-018-4392-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 09/14/2018] [Indexed: 01/11/2023]
Abstract
Every cell in our body depends on the electron transport processes in order to generate energy and function properly. Being able to regulate the metabolic activity of a cell would enable us altering its function and eventually lead us to a desired biological outcome at the cellular level and more desirably at a systemic level. Immunomodulatory or immunostimulatory molecules have been focus of the recent studies in order to regulate or boost the activities of the immune system cells and suppress or eliminate the disease conditions such as cancer, autoimmune reactions, inflammatory disorders as well as infections. In our study we used a ruthenium pyridyl thiocyanate complex, K330, to examine its effect on the activity of the innate immune system cells, macrophages in vitro. K330 was our candidate due to its application in the solar cells. Especially, due to its ability to get involved in electron transfer systems we hypothesized that it could change the activity of the immune system cells at cellular level, possibly by interfering the electron transfer reactions of the cells. Our results support our hypothesis since K330 lead to a significant increase in TNFα and IL1β cytokine production levels by LPS stimulated macrophages compared to only LPS treated control groups. Based on our in vitro results, K330 can also be utilized as an adjuvant candidate in vaccinations where the antigen itself is not sufficient to generate a proper immune response.
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