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Meng X, Li C, Gao A, Wang H, Wei L, Sun L. Integrated metabolomics and network pharmacology approach to exploring the anti-inflammatory mechanisms of Chuanwang xiaoyan capsules. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1242:124197. [PMID: 38889492 DOI: 10.1016/j.jchromb.2024.124197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 06/02/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024]
Abstract
Chuanwang xiaoyan capsules (CWXYC) have anti-inflammatory and detoxification effect, are used in the treatment of acute and chronic tonsillitis, pharyngitis and other inflammation-related diseases clinically. However, the anti-inflammatory mechanisms have not been elucidated. This study aimed to investigate the anti-inflammatory mechanisms of CWXYC using cell metabolomics and network pharmacology strategy. Specifically, CWXYC could efficiently reduce the content of nitric oxide (NO), the cytokines Interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) in LPS-induced RAW264.7 cells. Furthermore, metabolomics was performed to achieve 23 differential metabolites and 9 metabolic pathways containing glutamate metabolism, glutathione metabolism, arginine and proline metabolism, urea cycle, malate-aspartate shuttle, phosphatidylcholine biosynthesis, transfer of acetyl groups into mitochondria, cysteine metabolism and ammonia recycling. The results of network pharmacology showed that CWXYC could treat inflammation through 10 active components, 10 key targets and 55 pathways. Then the results of molecular docking also approved that there existed strong binding energy between the active components and the key targets. Finally, metabolomics and network pharmacology were integrated to get core targets AKT1, SRC and EGFR. Western blot experiments verified that CWXYC could exert anti-inflammatory effect by down-regulating the activated Akt1 and Src proteins. This study demonstrated that CWXYC exerted effects against inflammation, and the potential mechanisms were elucidated. These novel findings will provide an important basis for further mechanism investigations.
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Affiliation(s)
- Xiangping Meng
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China
| | - Caihong Li
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China
| | - Aichun Gao
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China
| | - Hongjin Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China
| | - Lan Wei
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China.
| | - Lixin Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning, China.
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Phillygenin Attenuated Colon Inflammation and Improved Intestinal Mucosal Barrier in DSS-induced Colitis Mice via TLR4/Src Mediated MAPK and NF-κB Signaling Pathways. Int J Mol Sci 2023; 24:ijms24032238. [PMID: 36768559 PMCID: PMC9917337 DOI: 10.3390/ijms24032238] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic, relapsing, and nonspecific inflammatory bowel disease (IBD). Phillygenin (PHI), a natural bioactive ingredient, isolated from Forsythiae Fructus, exhibits anti-inflammatory, anti-oxidative, and hepatoprotective activities. However, few reports provide direct evidence on the efficacy of PHI in improving colitis mice. The present study elucidated that the symptoms of DSS-induced colitis mice were alleviated after PHI administration, including body weight loss, the disease activity index, colon length shortening, colonic pathological damage, splenomegaly, and hepatomegaly. PHI treatment improved the intestinal mucosal barrier by protecting goblet cells, promoting gene expressions of Clca1, Slc26a3, and Aqp8, increasing tight junction proteins (TJs), and reducing epithelial cell apoptosis. In addition, the levels of oxidative stress (MPO, SOD, and MDA) and inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-10) were reversed by PHI in colitis mice. According to transcriptome and network pharmacology analysis, inflammatory pathway might be an important mechanism for PHI to improve colitis. Western blotting displayed that the PHI inhibited the activation of tyrosine kinase Src mediated by TLR4, and then reduced the phosphorylation of downstream proteins p38, JNK, and NF-κB in colitis mice. In summary, our results suggested that PHI might be an appropriate and effective drug candidate to protect colitis.
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Evaluation of Marker Compounds and Biological Activity of In Vitro Regenerated and Commercial Rehmannia glutinosa (Gaertn.) DC. Roots Subjected to Steam Processing. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:1506703. [PMID: 36545675 PMCID: PMC9763011 DOI: 10.1155/2022/1506703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 12/15/2022]
Abstract
Rehmannia glutinosa (Gaertn.) DC., belonging to the family Scrophulariaceae, has been known since immemorial times as a prominent oriental drug in East Asia that can treat various ailments, such as kidney disorders, anemia, and diabetes. In order to be applied for medical purposes, R. glutinosa is commonly processed using steam to increase its efficacy and biological activity. The increasing demand for R. glutinosa in the traditional medicine industry encouraged many researchers to develop a fast, efficient, and high-quality production system using biotechnological approaches. This study aimed to compare the chemical and biological activities of in vitro regenerated R. glutinosa (PKR) and commercial R. glutinosa (PCR) samples subjected to steam processing. We assessed the effects of steam processing and the differences in R. glutinosa material on 5-Hydroxymethyl-2-furaldehyde (5-HMF) content, total flavonoid and phenolic content, antioxidant activity, nitric oxide (NO) levels, and anti-inflammatory activity. PKR samples showed a significantly higher content of 5-HMF (0.15%) as compared to PCR samples (0.05%). Compared to unprocessed R. glutinosa (UPR) and PCR samples, PKR again showed the highest total phenolic and flavonoid content of 41.578 mg GAE/g and 17.208 mg RUE/g, respectively. Meanwhile, both processed R. glutinosa samples (PKR and PCR) showed a significantly higher DPPH antioxidant activity ((67.095 + 1.005)% and (61.579 + 0.907)%, respectively) than unprocessed R. glutinosa ((31.452 + 1.371)%). In addition, both PKR and PCR samples showed good anti-inflammatory activity by showing similar effects such as the inhibition of NO production and the suppression of inducible nitric oxide synthase (iNOS). Based on these results, PKR fulfilled the Chinese pharmacopeia standards, in terms of the amount of the marker compounds and showed a high level of bioactivity. Therefore, these findings are expected to be useful in verifying the efficacy of herbal medicines and the availability of suitable materials for medicinal use.
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Zhao C, Chen H, Liang H, Zhao X, Tang W, Wei M, Li Y, Zhang J, Yu X, Chen G, Zhu H, Jiang L, Zhang X. Lactobacillus plantarum RS-09 Induces M1-Type Macrophage Immunity Against Salmonella Typhimurium Challenge via the TLR2/NF-κB Signalling Pathway. Front Pharmacol 2022; 13:832245. [PMID: 35355723 PMCID: PMC8959098 DOI: 10.3389/fphar.2022.832245] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/26/2022] [Indexed: 12/30/2022] Open
Abstract
Lactobacillus plantarum can interact with macrophages against bacterial enteropathy due to its potential ability to modulate macrophage polarization. However, this mechanism is not completely understood. TLR2 can recognize microbial components and trigger macrophage cytokine responses to different gram-positive strains. The aim of this study was to investigate whether probiotic Lactobacillus plantarum RS-09 can induce macrophage polarization against Salmonella Typhimurium infection via TLR2 signalling. BALB/c mice were preadministered RS-09 continuously for 7 days and then infected with Salmonella Typhimurium ATCC14028. Mouse RAW264.7 mononuclear macrophages were stimulated with RS-09 and coincubated with ATCC14028 or PBS controls. The results of the in vivo study indicated that RS-09 could relieve S. Typhimurium-induced splenomegaly, body weight loss and death rate. RS-09 also limited the colonization and translocation of S. Typhimurium in the gastrointestinal tract and thereby protected against infection. We also observed that RS-09 upregulated the production of M1 macrophage characteristics (e.g., CD11c and IL-6) against S. Typhimurium. Furthermore, RS-09 induced the expression of TLR2 in macrophages. In an in vitro study, treatment of RAW264.7 cells with RS-09 either concurrently with or before S. Typhimurium challenge enhanced the secretion of Reactive oxygen species and Nitric oxide. This effect was related to TLR2 and NF-κB activation. Based on these findings, Lactobacillus plantarum RS-09 was shown to modulate M1 macrophage polarization and induce TLR2-linked NF-κB signalling activity in the innate immune response to S. Typhimurium infection.
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Affiliation(s)
- Chenpei Zhao
- School of Life Sciences, Ludong University, Yantai, China
| | - Huan Chen
- School of Life Sciences, Ludong University, Yantai, China
| | - Hao Liang
- Department of Microbiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaoyu Zhao
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
| | - Wenli Tang
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
| | - Maolian Wei
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
| | - Youzhi Li
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
| | - Jianlong Zhang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
| | - Xin Yu
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
| | - Guozhong Chen
- School of Life Sciences, Ludong University, Yantai, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
- Shandong Aquaculture Environmental Control Engineering Laboratory, Yantai, China
| | - Hongwei Zhu
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
- Shandong Aquaculture Environmental Control Engineering Laboratory, Yantai, China
| | - Linlin Jiang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Jinan, China
- Shandong Aquaculture Environmental Control Engineering Laboratory, Yantai, China
- *Correspondence: Linlin Jiang, ; Xingxiao Zhang,
| | - Xingxiao Zhang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Aquaculture Environmental Control Engineering Laboratory, Yantai, China
- *Correspondence: Linlin Jiang, ; Xingxiao Zhang,
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Dejani NN, Elshabrawy HA, Bezerra Filho CDSM, de Sousa DP. Anticoronavirus and Immunomodulatory Phenolic Compounds: Opportunities and Pharmacotherapeutic Perspectives. Biomolecules 2021; 11:biom11081254. [PMID: 34439920 PMCID: PMC8394099 DOI: 10.3390/biom11081254] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 02/06/2023] Open
Abstract
In 2019, COVID-19 emerged as a severe respiratory disease that is caused by the novel coronavirus, Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). The disease has been associated with high mortality rate, especially in patients with comorbidities such as diabetes, cardiovascular and kidney diseases. This could be attributed to dysregulated immune responses and severe systemic inflammation in COVID-19 patients. The use of effective antiviral drugs against SARS-CoV-2 and modulation of the immune responses could be a potential therapeutic strategy for COVID-19. Studies have shown that natural phenolic compounds have several pharmacological properties, including anticoronavirus and immunomodulatory activities. Therefore, this review discusses the dual action of these natural products from the perspective of applicability at COVID-19.
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Affiliation(s)
- Naiara Naiana Dejani
- Department of Physiology and Pathology, Federal University of Paraíba, João Pessoa 58051-900, Brazil;
| | - Hatem A. Elshabrawy
- Department of Molecular and Cellular Biology, College of Osteopathic Medicine, Sam Houston State University, Conroe, TX 77304, USA;
| | - Carlos da Silva Maia Bezerra Filho
- Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, Brazil;
- Postgraduate Program in Bioactive Natural and Synthetic Products, Federal University of Paraíba, João Pessoa 58051-900, Brazil
| | - Damião Pergentino de Sousa
- Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, Brazil;
- Postgraduate Program in Bioactive Natural and Synthetic Products, Federal University of Paraíba, João Pessoa 58051-900, Brazil
- Correspondence: ; Tel.: +55-83-3216-7347
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Tu Y, Yang Y, Li Y, He C. Naturally occurring coumestans from plants, their biological activities and therapeutic effects on human diseases. Pharmacol Res 2021; 169:105615. [PMID: 33872808 DOI: 10.1016/j.phrs.2021.105615] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/24/2021] [Accepted: 04/12/2021] [Indexed: 02/07/2023]
Abstract
Naturally occurring coumestans are known as a collection of plant-derived polycyclic aromatic secondary metabolites which are characterized by the presence of an oxygen heterocyclic four-ring system comprising a coumarin moiety and a benzofuran moiety sharing a C˭C bond. Recently, there is an increasing attention in excavating the medicinal potential of coumestans, particularly coumestrol, wedelolactone, psoralidin and glycyrol, in a variety of diseases. This review is a comprehensive inventory of the chemical structures of coumestans isolated from various plant sources during the period of 1956-2020, together with their reported biological activities. 120 molecules were collected and further classified as coumestans containing core skeleton, dimethylpyranocoumestans, furanocoumestans, O-glycosylated coumestans and others, which showed a wide range of pharmacological activities including estrogenic, anti-cancer, anti-inflammatory, anti-osteoporotic, organ protective, neuroprotective, anti-diabetic and anti-obesity, antimicrobial, immunosuppressive, antioxidant and skin-protective activities. Furthermore, this review focuses on the counteraction of coumestans against bone diseases and organ damages, and the involved molecular mechanisms, which could provide important information to better understand the medicinal values of these compounds. This review is intended to be instructive for the rational design and development of less toxic and more effective drugs with a coumestan scaffold.
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Affiliation(s)
- Yanbei Tu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao SAR 999078, China
| | - Ying Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao SAR 999078, China
| | - Yanfang Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Chengwei He
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao SAR 999078, China.
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Sharifi-Rad J, Kamiloglu S, Yeskaliyeva B, Beyatli A, Alfred MA, Salehi B, Calina D, Docea AO, Imran M, Anil Kumar NV, Romero-Román ME, Maroyi A, Martorell M. Pharmacological Activities of Psoralidin: A Comprehensive Review of the Molecular Mechanisms of Action. Front Pharmacol 2020; 11:571459. [PMID: 33192514 PMCID: PMC7643726 DOI: 10.3389/fphar.2020.571459] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/28/2020] [Indexed: 12/29/2022] Open
Abstract
Analysis of the most relevant studies on the pharmacological properties and molecular mechanisms of psoralidin, a bioactive compound from the seeds of Cullen corylifolium (L.) Medik. confirmed its complex therapeutic potential. In the last years, the interest of the scientific community regarding psoralidin increased, especially after the discovery of its benefits in estrogen-related diseases and as a chemopreventive agent. Growing preclinical pieces of evidence indicate that psoralidin has anticancer, antiosteoporotic, anti-inflammatory, anti-vitiligo, antibacterial, antiviral, and antidepressant-like effects. Here, we provide a comprehensive and critical review of psoralidin on its bioavailability, pharmacological activities with focus on molecular mechanisms and cell signaling pathways. In this review, we conducted literature research on the PubMed database using the following keywords: “Psoralidin” or “therapeutic effects” or “biological activity” or “Cullen corylifolium” in order to identify relevant studies regarding PSO bioavailability and mechanisms of therapeutic effects in different diseases based on preclinical, experimental studies. In the light of psoralidin beneficial actions for human health, this paper gathers complete information on its pharmacotherapeutic effects and opens new natural therapeutic perspectives in chronic diseases.
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Affiliation(s)
- Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Senem Kamiloglu
- Science and Technology Application and Research Center (BITAUM), Bursa Uludag University, Bursa, Turkey
| | - Balakyz Yeskaliyeva
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Ahmet Beyatli
- Department of Medicinal and Aromatic Plants, University of Health Sciences, Istanbul, Turkey
| | - Mary Angelia Alfred
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India
| | - Bahare Salehi
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Muhammad Imran
- Faculty of Allied Health Sciences, University Institute of Diet and Nutritional Sciences, The University of Lahore, Lahore, Pakistan
| | | | - Maria Eugenia Romero-Román
- Laboratorio de Análisis Químico, Departamento de Producción Vegetal, Facultad de Agronomía, Universidad de Concepción, Concepción, Chile
| | - Alfred Maroyi
- Department of Botany, University of Fort Hare, Alice, South Africa
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, Centre for Healthy Living, University of Concepción, Concepción, Chile.,Unidad de Desarrollo Tecnológico, UDT, Universidad de Concepción, Concepción, Chile
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STAT3 Differentially Regulates TLR4-Mediated Inflammatory Responses in Early or Late Phases. Int J Mol Sci 2020; 21:ijms21207675. [PMID: 33081347 PMCID: PMC7589049 DOI: 10.3390/ijms21207675] [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: 08/27/2020] [Revised: 10/02/2020] [Accepted: 10/14/2020] [Indexed: 12/17/2022] Open
Abstract
Toll-like receptor 4 (TLR4) signaling is an important therapeutic target to manage lipopolysaccharide (LPS)-induced inflammation. The transcription factor signal transducer and activator of transcription 3 (STAT3) has been identified as an important regulator of various immune-related diseases and has generated interest as a therapeutic target. Here, we investigated the time-dependent roles of STAT3 in LPS-stimulated RAW264.7 macrophages. STAT3 inhibition induced expression of the pro-inflammatory genes iNOS and COX-2 at early time points. STAT3 depletion resulted in regulation of nuclear translocation of nuclear factor (NF)-κB subunits p50 and p65 and IκBα/Akt/PI3K signaling. Moreover, we found that one Src family kinase, Lyn kinase, was phosphorylated in STAT3 knockout macrophages. In addition to using pharmacological inhibition of NF-κB, we found out that STAT3KO activation of NF-κB subunit p50 and p65 and expression of iNOS was significantly inhibited; furthermore, Akt tyrosine kinase inhibitors also inhibited iNOS and COX-2 gene expression during early time points of LPS stimulation, demonstrating an NF-κB- Akt-dependent mechanism. On the other hand, iNOS expression was downregulated after prolonged treatment with LPS. Activation of NF-κB signaling was also suppressed, and consequently, nitric oxide (NO) production and cell invasion were repressed. Overall, our data indicate that STAT3 differentially regulates early- and late-phase TLR4-mediated inflammatory responses.
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Peng LY, Yuan M, Shi HT, Li JH, Song K, Huang JN, Yi PF, Fu BD, Shen HQ. Protective Effect of Piceatannol Against Acute Lung Injury Through Protecting the Integrity of Air-Blood Barrier and Modulating the TLR4/NF-κB Signaling Pathway Activation. Front Pharmacol 2020; 10:1613. [PMID: 32038265 PMCID: PMC6988518 DOI: 10.3389/fphar.2019.01613] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022] Open
Abstract
Acute lung injury (ALI) is a common and complex inflammatory lung syndrome with higher morbidity and mortality rate. Piceatannol (PIC) has anti-inflammation and anti-oxidant properties. The study was designed to explore the effect and the action mechanisms of PIC on lipopolysaccharide (LPS)-induced ALI. Twenty-four hours after LPS challenge, mice from different treatment groups were euthanized, and the bronchoalveolar lavage fluid (BALF) and lung tissue samples were collected. Then the degree of pulmonary edema, lung pathological changes, myeloperoxidase (MPO) activity, and the production of pro-inflammatory cytokines were detected. Additionally, the messenger RNA (mRNA) expressions associated with cell adhesion molecules and tight junction were analyzed through quantitative real-time (qRT)-PCR, and the TLR4/NF-κB activation was examined by western blot. The results showed that PIC significantly inhibited LPS-induced lung edema, histopathological damage, MPO activity, cell infiltration, and pro-inflammatory cytokines production. Moreover, PIC notably suppressed mRNA expressions associated with inflammation and cell adhesion molecules. Furthermore, PIC also alleviated LPS-induced damage of air-blood barrier through reducing the levels of total proteins in BALF and recovering the expression of occludin and ZO-1 in the lung tissues. We also found that PIC remarkably restrained the LPS-induced TLR4/NF-κB pathway activation in lung tissues. In conclusion, PIC may be potential to treat LPS-induced acute lung injury (ALI) via regulating air-blood barrier and TLR4/NF-κB signaling pathway activation.
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Affiliation(s)
- Lu-Yuan Peng
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Meng Yuan
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hai-Tao Shi
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jing-He Li
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ke Song
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jiang-Ni Huang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Peng-Fei Yi
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ben-Dong Fu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hai-Qing Shen
- College of Veterinary Medicine, Jilin University, Changchun, China
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Cao L, Dai C, Qin R, Guo Y, Liu J. (3R)-5,6,7-trihydroxy-3-isopropyl-3-methylisochroman-1-one enhanced the therapeutic efficacy of anti-PD1 antibody through inhibiting PI3Kδ/γ. Immunopharmacol Immunotoxicol 2019; 41:599-606. [PMID: 31691624 DOI: 10.1080/08923973.2019.1678634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Purpose: Immunotherapy has demonstrated durable clinical responses in various cancers by disinhibiting the immune system, largely attributed to the success of immune-checkpoint blockade. However, there are still subsets of patients across multiple cancers not showing robust responses to these agents and one significant barrier to their efficacy may be the recruitment of myeloid-derived suppressor cells (MDSCs) into the tumor microenvironment. In this study, we demonstrated that functional inhibition of MDSCs with (3 R)-5,6,7-trihydroxy-3-isopropyl-3-methylisochroman-1-one (TIMO), a potent PI3Kδ/γ inhibitor, enhanced the therapeutic efficacy of anti-PD1 antibody in the tumor model.Materials and methods: A syngeneic ovarian tumor model was established. MDSCs from the peripheral blood and tumor parenchyma were analyzed by flow cytometry. Proliferation and killing effects of T-lymphocytes were measured. IFNγ production was measured by ELISA assay. qPCR and western blot were used to detect the gene and protein expression. Furthermore, the therapeutic effects of TIMO combined with anti-PD1 antibody were assessed by the tumor model.Results: Our data demonstrated that inhibition of granulocytic myeloid-derived suppressor cells (G-MDSCs) function with TIMO could overcome MDSCs-mediated immunosuppression and promote antigen-specific T-lymphocyte responses, resulting in the restoration of cytotoxic T cell-mediated tumor control. We further demonstrated that TIMO and anti-PD1 combination therapy promoted tumor growth control in a syngeneic ovarian tumor model.Conclusions: Our results provided proof of concept for a new combination strategy involving the use of a selective inhibitor of PI3Kδ/γ to inhibit the function of MDSCs to enhance tumor responses to immune checkpoint blocking antibodies.
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Affiliation(s)
- Lu Cao
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - ChunMei Dai
- Department of School Hospital, Changchun University of Chinese Medicine, Changchun, China
| | - Rui Qin
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - YaHua Guo
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - JunBao Liu
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
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Mankhong S, Iawsipo P, Srisook E, Srisook K. 4-methoxycinnamyl p-coumarate isolated from Etlingera pavieana rhizomes inhibits inflammatory response via suppression of NF-κB, Akt and AP-1 signaling in LPS-stimulated RAW 264.7 macrophages. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 54:89-97. [PMID: 30668386 DOI: 10.1016/j.phymed.2018.09.193] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 07/22/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND 4-methoxycinnamyl p-coumarate (MCC) was isolated from rhizomes of Etlingera pavieana by bioactivity-guided isolation, however, the molecular mechanism underlying its anti-inflammatory activity remains inadequately understood. PURPOSE In this study, we elucidated the suppressive effect of MCC on LPS-induced expression of inflammatory mediators and the molecular mechanisms responsible for anti-inflammatory activities in RAW 264.7 macrophages. METHODS Cell viability of MCC-treated RAW 264.7 macrophage was measured by MTT assay. Anti-inflammatory activity was evaluated by measurement of NO, PGE2, and cytokine production in LPS-stimulated cells. qRT-PCR and Western blotting analysis were used to investigate mRNA and protein levels of inflammatory responsive genes. NF-κB activation and transactivation activity were determined by immunofluorescence and reporter gene assay, respectively. RESULTS MCC considerably suppressed both the production of NO, PGE2, IL-1β as well as TNF-α and their expression. MCC inactivated NF-κB by reducing phosphorylation of IκBα and inhibiting NF-κB p65 nuclear translocation. Also, MCC significantly inhibited NF-κB transactivation activity. However, the inhibitory effect of MCC was independent of the MAPK signaling pathway. Furthermore, MCC significantly decreased phosphorylation of Akt and c-Jun, a main component of AP-1. CONCLUSION These findings suggest that the anti-inflammatory effect of MCC could be mediated by the inhibition of LPS-induced expression of inflammatory mediators by down-regulation of the NF-κB, Akt and AP-1 signaling pathways in murine macrophages.
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Key Words
- 4-methoxycinnamyl p-coumarate
- AP-1, activator protein-1
- Abbreviations: MCC, 4-methoxycinnamyl p-coumarate
- Akt, Protein Kinase B
- Anti-inflammatory Activity
- COX-2, cyclooxygenase-2
- Cytokines
- ERK, Extracellular signal-regulated kinase
- IL-1β, interleukin-1β
- JNK, c-Jun N-terminal Kinase
- LPS, Lipopolysaccharide
- MAPK, mitogen-activated protein kinase
- Macrophage
- NF-κB, Nuclear factor-kappa B
- NO, nitric oxide
- Nitric Oxide
- PGE(2), prostaglandins E(2)
- Prostaglandins E(2)
- TNF-α, tumor necrosis factor-α
- iNOS, inducible nitric oxide synthase
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Affiliation(s)
- Sakulrat Mankhong
- Department of Biochemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
| | - Panata Iawsipo
- Department of Biochemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
| | - Ekaruth Srisook
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, Thailand
| | - Klaokwan Srisook
- Department of Biochemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand.
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Specific inhibition of PI3Kδ/γ enhances the efficacy of anti-PD1 against osteosarcoma cancer. J Bone Oncol 2018; 16:100206. [PMID: 31334002 PMCID: PMC6617297 DOI: 10.1016/j.jbo.2018.11.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/03/2018] [Accepted: 11/05/2018] [Indexed: 02/06/2023] Open
Abstract
Impressive responses have been observed in patients with cancer treated with checkpoint inhibitory anti-programmed cell death-1 (PD-1) or anti-cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) antibodies through disinhibiting the immune system. However, tumors possess complex immunosuppressive tumor microenvironment to present therapeutic obstacles and the response rates to immune checkpoint inhibition remain low. One significant barrier to the efficacy of anti-PD1 treatment is the recruitment of myeloid-derived suppressor cells (MDSCs) into the tumor. MDSCs dramatically increased in peripheral blood of patients with osteosarcoma and prohibited both T-cell activation and infiltration. Here we demonstrated functional inhibition of G-MDSCs with (S)-(-)-N-[2-(3-Hydroxy-1H-indol-3-yl)-methyl]-acetamide (SNA), a specific inhibitor of PI3Kδ/γ, could prime tumor microenvironment, resultantly enhancing the therapeutic efficacy of anti-PD1 treatment in a syngeneic osteosarcoma tumor model. Combining SNA with anti-PD1 dramatically slowed osteosarcoma tumor growth and prolonged survival time of tumor-bearing mice, at least in part mediated through CD8+ T cells. Our results demonstrated that addition of SNA to anti-PD1 significantly altered infiltration and function of innate immune cells, providing the rationale for combination therapy in patients with osteosarcoma through inhibiting the function of MDSCs with a selective PI3Kδ/γ inhibitor to enhance responses to immune checkpoint blockade.
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13
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Abstract
Radiotherapy is one of the most efficient ways to treat cancer. However, deleterious effects, such as acute and chronic toxicities that reduce the quality of life, may result. Naturally occurring compounds have been shown to be non-toxic over wide dose ranges and are inexpensive and effective. Additionally, pharmacological strategies have been developed that use radioprotectors to inhibit radiation-induced toxicities. Currently available radioprotectors have several limitations, including toxicity. In this review, we present the mechanisms of proven radioprotectors, ranging from free radical scavenging (the best-known mechanism of radioprotection) to molecular-based radioprotection (e.g., upregulating expression of heat shock proteins). Finally, we discuss naturally occurring compounds with radioprotective properties in the context of these mechanisms.
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14
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Lee K, Kwak JH, Pyo S. Inhibition of LPS-induced inflammatory mediators by 3-hydroxyanthranilic acid in macrophages through suppression of PI3K/NF-κB signaling pathways. Food Funct 2018; 7:3073-82. [PMID: 27264984 DOI: 10.1039/c6fo00187d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Many tryptophan metabolites have immunomodulatory effects on various immune cells. 3-Hydroxyanthranilic Acid (3-HAA) is a tryptophan metabolite reported to have anti-inflammatory activity. The mechanism of this activity is unclear. The present study examined the immunomodulatory effects and molecular mechanisms of 3-HAA on macrophages. Pretreatment of 3-HAA (0.1-10 μg mL(-1)) for 2 h markedly inhibited NO and cytokine production in LPS-stimulated Raw 264.7 cells. Moreover, translocation and activation of NF-κB by LPS in the nucleus were abrogated through the prevention of IκB degradation by 3-HAA treatment. 3-HAA significantly suppressed LPS-induced PI3K/Akt/mTOR activation, whereas MAPKs were not affected by 3-HAA treatment. Furthermore, the inhibition of mTOR by 3-HAA resulted in decreased production of inflammatory mediators and NF-κB activity. Similar results were also observed in primary peritoneal macrophages. Furthermore, 3-HAA modulated macrophage polarization. Collectively, the results suggest that 3-HAA has an immunomodulatory effect that may result from inhibition of PI3K/Akt/mTOR and NF-κB activation, thereby decreasing the production of pro-inflammatory mediators.
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Affiliation(s)
- Kyoungran Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.
| | - Jong-Hwan Kwak
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.
| | - Suhkneung Pyo
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea.
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15
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Kong L, Ma R, Yang X, Zhu Z, Guo H, He B, Wang B, Hao D. Psoralidin suppresses osteoclastogenesis in BMMs and attenuates LPS-mediated osteolysis by inhibiting inflammatory cytokines. Int Immunopharmacol 2017; 51:31-39. [DOI: 10.1016/j.intimp.2017.07.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/02/2017] [Accepted: 07/06/2017] [Indexed: 10/19/2022]
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16
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Syk Plays a Critical Role in the Expression and Activation of IRAK1 in LPS-Treated Macrophages. Mediators Inflamm 2017; 2017:1506248. [PMID: 28680194 PMCID: PMC5478860 DOI: 10.1155/2017/1506248] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 04/13/2017] [Indexed: 01/10/2023] Open
Abstract
To address how interleukin-1 receptor-associated kinase 1 (IRAK1) is controlled by other enzymes activated by toll-like receptor (TLR) 4, we investigated the possibility that spleen tyrosine kinase (Syk), a protein tyrosine kinase that is activated at an earlier stage during TLR4 activation, plays a central role in regulating the functional activation of IRAK1. Indeed, we found that overexpression of myeloid differentiation primary response gene 88 (MyD88), an adaptor molecule that drives TLR signaling, induced IRAK1 expression and that piceatannol, a Syk inhibitor, successfully suppressed the MyD88-dependent upregulation of IRAK1 under LPS treatment conditions. Interestingly, in Syk-knockout RAW264.7 cells, IRAK1 activity was almost completely blocked after LPS treatment, while providing a Syk-recovery gene to the knockout cells successfully restored IRAK1 expression. According to our measurements of IRAK1 mRNA levels, the transcriptional upregulation of IRAK1 was induced by LPS treatment between 4 and 60 min, and this can be suppressed in Syk knockout cells, providing an effect similar that that seen under piceatannol treatment. The overexpression of Syk reverses this effect and leads to a significantly higher IRAK1 mRNA level. Collectively, our results strongly suggest that Syk plays a critical role in regulating both the activity and transcriptional level of IRAK1.
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17
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Fu A, Wang Y, Wu Y, Chen H, Zheng S, Li Y, Xu X, Li W. Echinacea purpurea Extract Polarizes M1 Macrophages in Murine Bone Marrow-Derived Macrophages Through the Activation of JNK. J Cell Biochem 2017; 118:2664-2671. [PMID: 28067413 DOI: 10.1002/jcb.25875] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/06/2017] [Indexed: 01/19/2023]
Abstract
Echinacea purpurea is an indigenous North American purple cone flower used by North Americans for treatment of various infectious diseases and wounds. This study investigated the effect of polysaccharide enriched extract of Echinacea purpurea (EE) on the polarization of macrophages. The results showed that 100 µg/mL of EE could markedly activate the macrophage by increasing the expression of CD80, CD86, and MHCII molecules. Meanwhile, EE upregulated the markers of classically activated macrophages (M1) such as CCR7 and the production of IL-1β, IL-6, IL-12p70, TNF-αand NO. The functional tests showed that EE enhanced the phagocytic and intracellular bactericidal activity of macrophage against ST. Furthermore, we demonstrated that JNK are required for EE-induced NO and M1-related cytokines production. Together, these results demonstrated that EE can polarize macrophages towards M1 phenotype, which is dependent on the JNK signaling pathways. J. Cell. Biochem. 118: 2664-2671, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Aikun Fu
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Yang Wang
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Yanping Wu
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Hongliang Chen
- Shandong Qilu Animal Health Co., Ltd, Jinan, Shangdong, China
| | - Shasha Zheng
- California Baptist University, Riverside, 92504, California
| | - Yali Li
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Xin Xu
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Weifen Li
- Key Laboratory of Animal Molecular Nutrition of Education of Ministry, College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
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18
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Ren G, Luo W, Sun W, Niu Y, Ma DL, Leung CH, Wang Y, Lu JJ, Chen X. Psoralidin induced reactive oxygen species (ROS)-dependent DNA damage and protective autophagy mediated by NOX4 in breast cancer cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:939-47. [PMID: 27387402 DOI: 10.1016/j.phymed.2016.05.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 05/10/2016] [Accepted: 05/21/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND Psoralidin (PSO), a natural phenolic coumarin, was reported to have anti-cancer activities. PSO induced reactive oxygen species (ROS) generation in cancer cells. The role of ROS in its anti-cancer effect remains unclear. PURPOSE This study was designed to investigate the potential roles of ROS in PSO-induced anti-cancer effect in MCF-7 breast cancer cells. METHODS Effect of PSO on cancer cell proliferation was determined by MTT assay. Comet assay was used to determine DNA damage. Protein expression was detected by Western blotting. Autophagic vacuoles were detected by monodansylcadaverine (MDC) staining. ROS generation was measured by fluorescent probe. NOX4 localization was determined by immunofluorescence staining. RESULTS PSO treatment caused proliferation inhibition in time- and dose- dependent manners, which was partially reversed by N-acetyl cysteine (NAC) and diphenyleneiodonium (DPI). PSO induced DNA damage and increased protein expression of γ-H2AX, phosphorylation of ATM, ATR, Chk1, and Chk2. PSO induced autophagy as evidenced by the accumulation of autophagic vacuoles and alterations of autophagic protein expression. PSO-induced cell death was enhanced by autophagy inhibitor chloroquine (CQ). Furthermore, PSO treatment induced ROS formation, which was reversed by NAC or DPI pretreatment. The expression of NOX4 was significantly enhanced by PSO. Both NAC and DPI could reverse PSO-induced DNA damage and autophagic responses. In addition, silencing NOX4 by siRNA inhibited PSO-induced ROS generation, DNA damage, and autophagy. CONCLUSIONS Taken together, these results showed that PSO induced DNA damage and protective autophagy mediated by ROS generation in a NOX4-dependent manner in MCF-7 cells.
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Affiliation(s)
- Guowen Ren
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Weiwei Luo
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Wen Sun
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yanan Niu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
| | - Xiuping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
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19
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Jin Z, Yan W, Jin H, Ge C, Xu Y. Psoralidin inhibits proliferation and enhances apoptosis of human esophageal carcinoma cells via NF-κB and PI3K/Akt signaling pathways. Oncol Lett 2016; 12:971-976. [PMID: 27446379 DOI: 10.3892/ol.2016.4716] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 12/18/2015] [Indexed: 12/27/2022] Open
Abstract
Esophageal cancer is the most common gastrointestinal cancer. Psoralidin exhibits antioxidant, anti-apoptotic, anti-inflammatory and antitumor effects, which result in the inhibition of cancer formation. The present study aimed to investigate the effect of psoralidin on esophageal carcinoma proliferation and growth, and to elucidate its underlying mechanism of action. The effect of psoralidin on cell proliferation was investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Using an annexin V-fluorescein isothiocyanate/propidium iodide apoptosis detection kit and 4',6-diamidino-2-phenylindole staining assay, the present study demonstrated that psoralidin significantly enhanced apoptosis of human esophageal carcinoma Eca9706 cells. In addition, caspase-3 activity was analyzed with a caspase-3 colorimetric assay kit, while nuclear factor (NF)-κB activity and protein phosphatidylinositol 3-kinase (PI3K)/Akt expression were measured with an NF-κB enzyme-linked immunosorbent assay kit and western blot analysis, respectively. Eca9706 cells were treated with a PI3K agonist in order to investigate the mechanism of action of psoralidin. It was observed that psoralidin was able to decrease the proliferation and promote the cellular apoptosis of Eca9706 cells in a dose-dependent manner. Furthermore, psoralidin was also able to inhibit the caspase-3 activity of Eca9706 cells in a dose-dependent manner. In addition, psoralidin inhibited NF-κB activity and reduced PI3K and Akt protein expression in Eca9706 cells. Notably, the PI3K agonist was able to reverse the effect of psoralidin on Eca9706 cells. The results of the present study demonstrated that psoralidin was able to inhibit proliferation and enhance apoptosis of human esophageal carcinoma cells via the NF-κB and PI3K/Akt signaling pathways.
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Affiliation(s)
- Zhiliang Jin
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Wei Yan
- Department of Gastroenterology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Hui Jin
- Department of Neonatology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Changzheng Ge
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Yanhua Xu
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
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20
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Pahari P, Saikia UP, Das TP, Damodaran C, Rohr J. Synthesis of Psoralidin derivatives and their anticancer activity: First synthesis of Lespeflorin I 1. Tetrahedron 2016; 72:3324-3334. [PMID: 27698514 DOI: 10.1016/j.tet.2016.04.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Synthetic scheme for the preparation of a number of different derivatives of anticancer natural product Psoralidin is described. A convergent synthetic approach is followed using simple starting materials like substituted phenyl acetic esters and benzoic acids. The developed synthetic route leads us to complete the first synthesis of an analogous natural product Lespeflorin I1, a mild melanin synthesis inhibitor. Preliminary bioactivity studies of the synthesized compounds are carried out against two commonly used prostate cancer cell lines. Results show that the bioactivity of the compounds can be manipulated by the simple modification of the functional groups.
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Affiliation(s)
- Pallab Pahari
- Chemical Science and Technology Division, CSIR - North East Institute of Science & Technology, Jorhat-785006, Assam, India; Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone St., Lexington, Kentucky-40536, United States
| | - Ujwal Pratim Saikia
- Chemical Science and Technology Division, CSIR - North East Institute of Science & Technology, Jorhat-785006, Assam, India
| | - Trinath Prasad Das
- Department of Urology, University of Louisville, Louisville, KY 40292, United States
| | - Chendil Damodaran
- Department of Urology, University of Louisville, Louisville, KY 40292, United States
| | - Jurgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 S. Limestone St., Lexington, Kentucky-40536, United States
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21
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Molecular Pathway of Psoralidin-Induced Apoptosis in HepG2 Cell Line. Chin J Integr Med 2016; 25:757-762. [DOI: 10.1007/s11655-016-2251-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2015] [Indexed: 12/13/2022]
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22
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5-Methoxyl Aesculetin Abrogates Lipopolysaccharide-Induced Inflammation by Suppressing MAPK and AP-1 Pathways in RAW 264.7 Cells. Int J Mol Sci 2016; 17:315. [PMID: 26938526 PMCID: PMC4813178 DOI: 10.3390/ijms17030315] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 02/18/2016] [Accepted: 02/25/2016] [Indexed: 12/21/2022] Open
Abstract
For the first time, a pale amorphous coumarin derivative, 5-methoxyl aesculetin (MOA), was isolated from the dried bark of Fraxinus rhynchophylla Hance (Oleaceae). MOA modulates cytokine expression in lipopolysaccharide (LPS)-treated RAW 264.7 macrophages, but the precise mechanisms are still not fully understood. We determined the effects of MOA on the production of inflammatory mediators and pro-inflammatory cytokines in the LPS-induced inflammatory responses of RAW 264.7 macrophages. MOA significantly inhibited the LPS-induced production of nitric oxide (NO), prostaglandin E₂ (PGE₂), tumor necrosis factor-α (TNF-α), interleukin-6, and interleukin-1β. It also effectively attenuated inducible nitric oxide (NO) synthase, cyclooxygenase-2, and TNF-α mRNA expression and significantly decreased the levels of intracellular reactive oxygen species. It inhibited phosphorylation of the extracellular signal-regulated kinase (ERK1/2), thus blocking nuclear translocation of activation protein (AP)-1. In a molecular docking study, MOA was shown to target the binding site of ERK via the formation of three hydrogen bonds with two residues of the kinase, which is sufficient for the inhibition of ERK. These results suggest that the anti-inflammatory effects of MOA in RAW 264.7 macrophages derive from its ability to block both the activation of mitogen-activated protein kinases (MAPKs) and one of their downstream transcription factors, activator protein-1 (AP-1). Our observations support the need for further research into MOA as a promising therapeutic agent in inflammatory diseases.
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Simultaneous quantification of 5 main components of Psoralea corylifolia L. in rats’ plasma by utilizing ultra high pressure liquid chromatography tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1011:128-35. [DOI: 10.1016/j.jchromb.2015.12.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 12/14/2015] [Accepted: 12/20/2015] [Indexed: 11/21/2022]
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24
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Hu W, Wang X, Wu L, Shen T, Ji L, Zhao X, Si CL, Jiang Y, Wang G. Apigenin-7-O-β-d-glucuronide inhibits LPS-induced inflammation through the inactivation of AP-1 and MAPK signaling pathways in RAW 264.7 macrophages and protects mice against endotoxin shock. Food Funct 2016; 7:1002-13. [DOI: 10.1039/c5fo01212k] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In vitro and in vivo anti-inflammatory activities of apigenin-7-O-β-d-glucuronide.
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Affiliation(s)
- Weicheng Hu
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Huaiyin Normal University
- Huaian 223300
- China
| | - Xinfeng Wang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Huaiyin Normal University
- Huaian 223300
- China
| | - Lei Wu
- Tianjin Key Laboratory of Pulp & Paper
- Tianjin University of Science & Technology
- Tianjin 300457
- China
| | - Ting Shen
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Huaiyin Normal University
- Huaian 223300
- China
| | - Lilian Ji
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake
- Huaiyin Normal University
- Huaian 223300
- China
| | - Xihong Zhao
- Key Laboratory for Green Chemical Process of Ministry of Education
- School of Chemical Engineering and Pharmacy
- Wuhan Institute of Technology
- Wuhan 430073
- China
| | - Chuan-Ling Si
- Tianjin Key Laboratory of Pulp & Paper
- Tianjin University of Science & Technology
- Tianjin 300457
- China
- State Key Laboratory of Tree Genetics and Breeding
| | - Yunyao Jiang
- Department of Medical Biotechnology
- College of Biomedical Science
- Kangwon National University
- Chuncheon 200-701
- Korea
| | - Gongcheng Wang
- Department of Urology
- Huai'an First People's Hospital
- Nanjing Medical University
- Huaian 223300
- China
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25
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Jin Z, Yan W, Jin H, Ge C, Xu Y. Differential effect of psoralidin in enhancing apoptosis of colon cancer cells via nuclear factor-κB and B-cell lymphoma-2/B-cell lymphoma-2-associated X protein signaling pathways. Oncol Lett 2015; 11:267-272. [PMID: 26870201 DOI: 10.3892/ol.2015.3861] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 08/07/2015] [Indexed: 12/19/2022] Open
Abstract
Worldwide, colon cancer is the third most common cancer in terms of incidence, following lung and breast cancer. Resistance to psoralidin frequently occurs following its use as an anticancer treatment. However, the mechanisms underlying the effects of psoralidin on colon cancer, remain to be elucidated. Hence, the present study investigated the anticancer effects and potential mechanism of action of psoralidin on SW480 human colon cancer cells. In the present study, an MTT assay was performed to measure the viability of SW480 cells. Additionally, an Annexin V-fluorescein isothiocyanate/propidium iodide apoptosis detection kit, DAPI staining assay and caspase-3 colorimetric assay kits were used to analyze the cellular apoptosis of SW480 cells. The nuclear factor-κB (NF-κB) p65 activity and B-cell lymphoma-2 (Bcl-2)/Bcl-2-associated X protein (Bax) protein expression of SW480 cells was detected using NF-κB colorimetric assay kits and western blot analysis, respectively. Bcl-2 inhibitor ABT-737 was added to SW480 cells and the subsequent effects and mechanism of action of psoralidin on SW480 colon cancer cells was studied. In the present study, psoralidin reduced SW480 cell viability and enhanced the cellular apoptosis of SW480 cells in a dose-dependent manner. Caspase-3 activity of SW480 cells was increased following treatment with psoralidin. Additionally, psoralidin was able to reduce the NF-κB p65 activity of SW480 cells. Furthermore, psoralidin was able to reduce Bcl-2 protein expression and increase Bax protein expression in SW480 cells. Notably, Bcl-2 inhibitor was observed to enhance the effects of psoralidin on SW480 cells. The results of the present study suggest that psoralidin may be a candidate drug for the treatment of colon cancer by inhibition of the NF-κB and Bcl-2/Bax signaling pathways.
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Affiliation(s)
- Zhiliang Jin
- Department of Oncology, Central Hospital of Jingzhou, Jingzhou, Hubei 434020, P.R. China
| | - Wei Yan
- Department of Gastroenterology, Central Hospital of Jingzhou, Jingzhou, Hubei 434020, P.R. China
| | - Hui Jin
- Department of Neonatology, Central Hospital of Jingzhou, Jingzhou, Hubei 434020, P.R. China
| | - Changzheng Ge
- Department of Oncology, Central Hospital of Jingzhou, Jingzhou, Hubei 434020, P.R. China
| | - Yanhua Xu
- Department of Oncology, Central Hospital of Jingzhou, Jingzhou, Hubei 434020, P.R. China
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26
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Escherichia coli Maltose-Binding Protein Induces M1 Polarity of RAW264.7 Macrophage Cells via a TLR2- and TLR4-Dependent Manner. Int J Mol Sci 2015; 16:9896-909. [PMID: 25941931 PMCID: PMC4463623 DOI: 10.3390/ijms16059896] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 12/23/2022] Open
Abstract
Maltose-binding protein (MBP) is a critical player of the maltose/maltodextrin transport system in Escherichia coli. Our previous studies have revealed that MBP nonspecifically induces T helper type 1 (Th1) cell activation and activates peritoneal macrophages obtained from mouse. In the present study, we reported a direct stimulatory effect of MBP on RAW264.7 cells, a murine macrophage cell line. When stimulated with MBP, the production of nitric oxide (NO), IL-1β, IL-6 and IL-12p70, and the expressions of CD80, MHC class II and inducible nitric oxide synthase (iNOS) were all increased in RAW264.7 cells, indicating the activation and polarization of RAW264.7 cells into M1 macrophages induced by MBP. Further study showed that MBP stimulation upregulated the expression of TLR2 and TLR4 on RAW264.7 cells, which was accompanied by subsequent phosphorylation of IκB-α and p38 MAPK. Pretreatment with anti-TLR2 or anti-TLR4 antibodies largely inhibited the phosphorylation of IκB-α and p38 MAPK, and greatly reduced MBP-induced NO and IL-12p70 production, suggesting that the MBP-induced macrophage activation and polarization were mediated by TLR2 and TLR4 signaling pathways. The observed results were independent of lipopolysaccharide contamination. Our study provides a new insight into a mechanism by which MBP enhances immune responses and warrants the potential application of MBP as an immune adjuvant in immune therapies.
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Deng GG, Wei W, Yang XW, Zhang YB, Xu W, Gong NB, Lü Y, Wang FF. New coumarins from the roots of Angelica dahurica var. formosana cv. Chuanbaizhi and their inhibition on NO production in LPS-activated RAW264.7 cells. Fitoterapia 2015; 101:194-200. [PMID: 25647326 DOI: 10.1016/j.fitote.2015.01.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/23/2015] [Accepted: 01/26/2015] [Indexed: 11/15/2022]
Abstract
A new linear pyranocoumarin named (-)-hydroxydecursinol (1) and a new biscoumarin named (±)-dahuribiscoumarin (2), together with six known compounds isoimperatorin (3), imperatorin (4), phellopterin (5), isodemethylfuropinarine (6), demethylfuropinarine (7), and (+)-decursinol (8) were isolated from the 75% ethanolic extract of the roots of Angelica dahurica var. formosana cv. Chuanbaizhi. Their structures were elucidated by extensive spectroscopic techniques, including 2D NMR spectroscopy and mass spectrometry, and the structure of 2 was confirmed by single-crystal X-ray diffraction. All of the isolated compounds were evaluated for the inhibition against nitric oxide (NO) production in the lipopolysaccharide (LPS)-activated RAW264.7 macrophage cell line, and exhibited the inhibitory activity on NO production in a concentration-dependent manner. Furthermore, real-time PCR analysis revealed that compounds 2, 5-8 could significantly suppress the expression levels of inducible nitric oxide synthase mRNA in a concentration-dependent manner. And their primary structure-activity relationships of NO inhibitory effects were also briefly discussed. These compounds are potential candidates for further bioassay studies to determine their suitability as drug leads.
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Affiliation(s)
- Gai-Gai Deng
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, PR China.
| | - Wei Wei
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, PR China
| | - Xiu-Wei Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, PR China.
| | - You-Bo Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, PR China
| | - Wei Xu
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University, Beijing 100191, PR China
| | - Ning-Bo Gong
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, PR China
| | - Yang Lü
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, PR China
| | - Feng-Feng Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, PR China
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Chen T, Mou Y, Tan J, Wei L, Qiao Y, Wei T, Xiang P, Peng S, Zhang Y, Huang Z, Ji H. The protective effect of CDDO-Me on lipopolysaccharide-induced acute lung injury in mice. Int Immunopharmacol 2015; 25:55-64. [PMID: 25614226 DOI: 10.1016/j.intimp.2015.01.011] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/10/2014] [Accepted: 01/12/2015] [Indexed: 12/29/2022]
Abstract
CDDO-Me, initiated in a phase II clinical trial, is a potential useful therapeutic agent for cancer and inflammatory dysfunctions, whereas the therapeutic efficacy of CDDO-Me on LPS-induced acute lung injury (ALI) has not been reported as yet. The purpose of the present study was to explore the protective effect of CDDO-Me on LPS-induced ALI in mice and to investigate its possible mechanism. BalB/c mice received CDDO-Me (0.5mg/kg, 2mg/kg) or dexamethasone (5mg/kg) intraperitoneally 1h before LPS stimulation and were sacrificed 6h later. W/D ratio, lung MPO activity, number of total cells and neutrophils, pulmonary histopathology, IL-6, IL-1β, and TNF-α in the BALF were assessed. Furthermore, we estimated iNOS, IL-6, IL-1β, and TNF-α mRNA expression and NO production as well as the activation of the three main MAPKs, AkT, IκB-α and p65. Pretreatment with CDDO-Me significantly ameliorated W/D ratio, lung MPO activity, inflammatory cell infiltration, and inflammatory cytokine production in BALF from the in vivo study. Additionally, CDDO-Me had beneficial effects on the intervention for pathogenesis process at molecular, protein and transcriptional levels in vitro. These analytical results provided evidence that CDDO-Me could be a potential therapeutic candidate for treating LPS-induced ALI.
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Affiliation(s)
- Tong Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Yi Mou
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Jiani Tan
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Linlin Wei
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Yixue Qiao
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Tingting Wei
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Pengjun Xiang
- School of Pharmacy, China Pharmaceutical University, No.24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Sixun Peng
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Yihua Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China
| | - Zhangjian Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China.
| | - Hui Ji
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjiaxiang, Nanjing 210009, Jiangsu, China.
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Choi WS, Seo YB, Shin PG, Kim WY, Lee SY, Choi YJ, Kim GD. Veratric acid inhibits iNOS expression through the regulation of PI3K activation and histone acetylation in LPS-stimulated RAW264.7 cells. Int J Mol Med 2014; 35:202-10. [PMID: 25352364 DOI: 10.3892/ijmm.2014.1982] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 10/09/2014] [Indexed: 11/05/2022] Open
Abstract
In the present study, we investigated regulatory effects of veratric acid on the production of nitric oxide (NO) in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. NO production was significantly decreased by veratric acid in the LPS-stimulated RAW264.7 cells in a dose-dependent manner. The reduction in nitric oxide production was induced by the downregulation of inducible NO synthase (iNOS) expression. Veratric acid suppressed the LPS-induced effects on the regulatory and catalytic subunits of phosphoinositide 3-kinase (PI3K), comprised of p85, p110α, p110β and Akt. The acetylation of p300 and the phosphorylation of activating transcription factor 2 (ATF-2) induced by LPS were downregulated following treatment with veratric acid; similar effects were observed following treatment with LY294002, a specific inhibitor of PI3K/Akt. The LPS-induced expression of histone deacetylase (HDAC)3 decreased to basal levels following treatment with veratric acid, and its expression was also downregulated by LY294002. In the measurement of histone acetylation levels, the LPS-stimulated acetylation of histone H4 was significantly attenuated by veratric acid, and was also reduced following the inhibition of PI3K/Akt with LY294002. From our data, it can be concluded that veratric acid exerts a regulatory effect on LPS-induced iNOS expression. Our results suggest that veratric acid impedes the PI3K/Akt-mediated histone acetyl-transferase (HAT) activation and HDAC expression induced by LPS, thereby abrogating iNOS expression.
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Affiliation(s)
- Woo-Suk Choi
- Department of Microbiology, College of Natural Sciences, Pukyong National University, Busan 608-737, Republic of Korea
| | - Yong-Bae Seo
- Department of Microbiology, College of Natural Sciences, Pukyong National University, Busan 608-737, Republic of Korea
| | - Pyung-Gyun Shin
- Mushroom Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Suwon 441-707, Republic of Korea
| | - Woe-Yeon Kim
- Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Sang Yeol Lee
- Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Young-Ju Choi
- Department of Food and Nutrition, College of Medical Life, Silla University, Busan 617-736, Republic of Korea
| | - Gun-Do Kim
- Department of Microbiology, College of Natural Sciences, Pukyong National University, Busan 608-737, Republic of Korea
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Hao W, Zhang X, Zhao W, Chen X. Psoralidin induces autophagy through ROS generation which inhibits the proliferation of human lung cancer A549 cells. PeerJ 2014; 2:e555. [PMID: 25250213 PMCID: PMC4168759 DOI: 10.7717/peerj.555] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/12/2014] [Indexed: 12/31/2022] Open
Abstract
Psoralidin (PSO), a natural furanocoumarin, is isolated from Psoralea corylifolia L. possessing anti-cancer properties. However, the mechanisms of its effects remain unclear. Herein, we investigated its anti-proliferative effect and potential approaches of action on human lung cancer A549 cells. Cell proliferation and death were measured by MTT and LDH assay respectively. Apoptosis was detected with Hoechst 33342 staining by fluorescence microscopy, Annexin V-FITC by flow cytometry and Western blot analysis for apoptosis-related proteins. The autophagy was evaluated using MDC staining, immunofluorescence assay and Western blot analyses for LC3-I and LC3-II. In addition, the reactive oxygen species (ROS) generation was measured by DCFH2-DA with flow cytometry. PSO dramatically decreased the cell viabilities in dose- and time-dependent manner. However, no significant change was observed between the control group and the PSO-treated groups in Hoechst 33342 and Annexin V-FITC staining. The expression of apoptosis-related proteins was not altered significantly either. While the MDC-fluorescence intensity and the expression ratio of LC3-II/LC3-I was remarkably increased after PSO treatment. Autophagy inhibitor 3-MA blocked the production of LC3-II and reduced the cytotoxicity in response to PSO. Furthermore, PSO increased intracellular ROS level which was correlated to the elevation of LC3-II. ROS scavenger N-acetyl cysteine pretreatment not only decreased the ROS level, reduced the expression of LC3-II but also reversed PSO induced cytotoxicity. PSO inhibited the proliferation of A549 cells through autophagy but not apoptosis, which was mediated by inducing ROS production.
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Affiliation(s)
- Wenhui Hao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao , China
| | - Xuenong Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao , China
| | - Wenwen Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao , China
| | - Xiuping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao , China
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Guo D, Li JR, Wang Y, Lei LS, Yu CL, Chen NN. Cyclovirobuxinum D suppresses lipopolysaccharide-induced inflammatory responses in murine macrophages in vitro by blocking JAK-STAT signaling pathway. Acta Pharmacol Sin 2014; 35:770-8. [PMID: 24747164 PMCID: PMC4086391 DOI: 10.1038/aps.2014.16] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 02/20/2014] [Indexed: 12/13/2022] Open
Abstract
AIM Cyclovirobuxinum D (CVB-D), an alkaloid isolated from the Chinese medicinal plant Buxus microphylla, has been found to be effective to treat cardiac insufficiency, arrhythmias and coronary heart disease. In the present study, we investigated the effects of CVB-D on the inflammatory responses in lipopolysaccharide (LPS)-stimulated murine macrophages in vitro and the underlying mechanisms. METHODS Murine macrophage cell line RAW264.7 cells were incubated in the presence of LPS (0.1 μg/mL) for 24 h. The cell viability was measured using MTT assay. The release of NO and cytokines were detected using the Griess test and ELISA, respectively. The mRNA and protein levels were determined using RT-PCR and Western blot, respectively. Reporter gene assays were used to analyze the transcriptional activity of NF-κB. RESULTS Treatment of RAW264.7 cells with CVB-D (25-300 μmol/L) did not affect the cell viability. Pretreatment with CVB-D (50, 100 and 200 μmol/L) concentration-dependently decreased NO release and iNOS expression in LPS-treated RAW264.7 cells (its IC50 value in inhibition of NO production was 144 μmol/L). CVB-D also concentration-dependently inhibited the secretion and mRNA expression of IL-1β and IL-6 in LPS-treated RAW264.7 cells. Furthermore, CVB-D remarkably inhibited the phosphorylation of STAT1 and STAT3, as well as JAK2 in LPS-treated RAW264.7 cells, but did not affect the activation of NF-κB and MAPKs pathways. Pretreatment with the JAK2 specific inhibitor AG490 (30 μmol/L) produced similar effects on NO release and iNOS expression in LPS-treated RAW264.7 cells. CONCLUSION CVB-D exerts anti-inflammatory effects in LPS-stimulated murine macrophages in vitro at least in part by blocking the JAK-STAT signaling pathway. The anti-inflammatory actions of CVB-D may contribute to its cardioprotection.
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Affiliation(s)
- Dan Guo
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jing-rong Li
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ying Wang
- China National Center for Biotechnology Development, Beijing 100039, China
| | - Lin-sheng Lei
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Chuan-lin Yu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Na-na Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
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Abstract
Over the centuries, plant extracts have been used to treat various diseases. Until now, natural products have played an important role in anticancer therapy as there are more than 500 compounds from terrestrial and marine plants or microorganisms, which have antioxidant, antiproliferative, or antiangiogenic properties and are therefore able to reduce tumor growth. The recent discovery of new natural products has been accelerated by novel technologies (high throughput screening of natural products in plants, animals, marine organisms, and microorganisms). Vincristine, irinotecan, etoposide, and paclitaxel are examples of compounds derived from plants that are used in cancer treatment. Similarly, actinomycin D, mitomycin C, bleomycin, doxorubicin, and L-asparaginase are drugs derived from microorganisms. In this review, we describe the molecular mechanisms of natural compounds with anti-inflammatory and anticancer activities.
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Yoon JY, Jeong HY, Kim SH, Kim HG, Nam G, Kim JP, Yoon DH, Hwang H, Kimc TW, Hong S, Cho JY. Methanol extract of Evodia lepta displays Syk/Src-targeted anti-inflammatory activity. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:999-1007. [PMID: 23747536 DOI: 10.1016/j.jep.2013.05.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 04/24/2013] [Accepted: 05/15/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Evodia lepta (Spreng.) Merr., in the Rutaceae family, is a medicinal plant traditionally used to treat inflammatory symptoms such as in meningitis and hepatitis. However, no study has systematically investigated its anti-inflammatory activities including its molecular mechanism. MATERIALS AND METHODS The effects of a methanol extract from the roots Evodia lepta (El-ME) were evaluated using lipopolysaccharide (LPS)-treated RAW264.7 cells producing nitric oxide (NO) and prostaglandin E2 (PGE2), and an HCl/ethanol-induced mouse gastritis model. Target molecules were identified by analyzing the activation of transcription factors and their upstream kinases. RESULTS El-ME reduced the production of NO and PGE2 from LPS-activated RAW264.7 cells in a dose-dependent manner. El-ME also ameliorated the gastritis symptoms of EtOH/HCl-treated mice. The extract suppressed production of mRNA for the inducible NO synthase (iNOS) and cyclooxygenase (COX)-2; the nuclear translocation of nuclear factor (NF)-κB; the phosphorylation of upstream kinases that activate NF-κB; and the kinase activities of Syk and Src. CONCLUSION The anti-inflammatory effects of El-ME might be due to its suppression of Syk/Src and NF-κB. Considering the in vitro and in vivo efficacy of El-ME, Evodia lepta could be developed into an anti-inflammatory herbal remedy.
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Affiliation(s)
- Ju Young Yoon
- Department of Genetic Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
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Lee SH, Lee JH, Oh EY, Kim GY, Choi BT, Kim C, Choi YH. Ethanol extract of Cnidium officinale exhibits anti-inflammatory effects in BV2 microglial cells by suppressing NF-κB nuclear translocation and the activation of the PI3K/Akt signaling pathway. Int J Mol Med 2013; 32:876-82. [PMID: 23864034 DOI: 10.3892/ijmm.2013.1447] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 07/09/2013] [Indexed: 11/05/2022] Open
Abstract
Chronic microglial activation endangers neuronal survival through the release of various toxic pro-inflammatory molecules; thus, negative regulators of microglial activation have been identified as potential therapeutic candidates for several neurological diseases. In this study, we investigated the inhibitory effects of an ethanol extract of Cnidium officinale rhizomes (EECO), which has been used as a herbal drug in Oriental medicine, on the production of lipopolysaccharide (LPS)-induced pro-inflammatory mediators, such as nitric oxide (NO) and prostaglandin E₂ (PGE₂), as well as that of pro-inflammatory cytokines in BV2 microglia cells. EECO significantly inhibited the excess production of NO and PGE₂ in LPS-stimulated BV2 microglia cells. It also attenuated the expression of inducible NO synthase, cyclooxygenase-2, as well as that of pro-inflammatory cytokines, such as interleukin-1β and tumor necrosis factor-α. Moreover, EECO exhibited anti-inflammatory properties by suppressing nuclear factor-κB (NF-κB) translocation and the activation of the phosphoinositide 3-kinase/Akt pathway in LPS-stimulated BV2 cells. These results indicate that EECO exerts anti-inflammatory effects in LPS-stimulated BV2 microglial cells by inhibiting pro-inflammatory mediators and cytokine production by blocking the NF-κB pathway. These findings suggest that EECO has substantial therapeutic potential for the treatment of neurodegenerative diseases accompanied by microglial activation.
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Affiliation(s)
- Shin Hwa Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea
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Yao X, Li G, Bai Q, Xu H, Lü C. Taraxerol inhibits LPS-induced inflammatory responses through suppression of TAK1 and Akt activation. Int Immunopharmacol 2013; 15:316-24. [PMID: 23333629 DOI: 10.1016/j.intimp.2012.12.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 12/27/2012] [Accepted: 12/31/2012] [Indexed: 01/01/2023]
Abstract
Taraxerol, a triterpenoid compound, has potent anti-inflammatory effects. However, the molecular mechanisms are not clear. In the study, taraxerol concentration dependently inhibited nitric-oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) at the protein and mRNA levels and these inhibitions decreased the production of nitric oxide (NO), prostaglandin 2 (PGE2), tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and IL-1β induced by LPS. Furthermore, we found that taraxerol suppressed translocation of nuclear factor-κB (NF-κB), phosphorylation of IκBα, blocked the IκBα degradation as well as IKK and mitogen-activated protein kinase (MAPK) activation by inactivation of TGF-β-activated kinase-1 (TAK1) and Akt. In addition, taraxerol significantly inhibited the formation of TAK1/TAK-binding protein1 (TAB1), which was accompanied by inducing degradation of TAK1, decreasing LPS-induced polyubiquitination of TAK1 as well as TAK1 phosphorylation. Taken together, our data suggest that taraxerol downregulates the expression of proinflammatory mediators in macrophages by interfering with the activation of TAK1 and Akt, thus preventing NF-κB activation.
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Affiliation(s)
- Xiangyang Yao
- Department of Biology and Food Engineering, Bengbu College, Bengbu, PR China.
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Zhu ZG, Jin H, Yu PJ, Tian YX, Zhang JJ, Wu SG. Mollugin inhibits the inflammatory response in lipopolysaccharide-stimulated RAW264.7 macrophages by blocking the Janus kinase-signal transducers and activators of transcription signaling pathway. Biol Pharm Bull 2013; 36:399-406. [PMID: 23318249 DOI: 10.1248/bpb.b12-00804] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mollugin, a kind of naphthohydroquinone, is a major constituent isolated from Rubia cordifolia L. and demonstrated to possess anti-inflammatory activity in recent reports. However, the effects and mechanism of action of mollugin in inflammation have not been fully defined. The present study was therefore designed to investigate whether mollugin suppresses the inflammatory response in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. Mollugin attenuated the LPS-induced expression of nitric oxide (NO), inducible nitric oxide synthase (iNOS), interleukin (IL)-1β and IL-6 but augmented the expression of tumor necrosis factor (TNF)-α. Mollugin did not inhibit the degradation of inhibitory kappa B (IκB)-α or the nuclear translocation of p65 nuclear factor-kappa B (NF-κB) but rather enhanced the phosphorylation of p65 subunits evoked by LPS. Mollugin did not inhibit the phosphorylation of extracellular-signal-related kinase (ERK) 1/2, p38, and c-Jun N-terminal kinase (JNK) 1/2 either. Mollugin significantly reduced the LPS-mediated phosphorylation of Janus kinase (JAK) 2, signal transducers and activators of transcription (STAT) 1 and STAT3. Molecular docking analysis showed that mollugin binds to JAK2 in a manner similar to that of AG490, a specific JAK2 inhibitor. We conclude that mollugin may be a JAK2 inhibitor and inhibits LPS-induced inflammatory responses by blocking the activation of the JAK-STAT pathway.
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Affiliation(s)
- Zheng-Guang Zhu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
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Zong Y, Sun L, Liu B, Deng YS, Zhan D, Chen YL, He Y, Liu J, Zhang ZJ, Sun J, Lu D. Resveratrol inhibits LPS-induced MAPKs activation via activation of the phosphatidylinositol 3-kinase pathway in murine RAW 264.7 macrophage cells. PLoS One 2012; 7:e44107. [PMID: 22952890 PMCID: PMC3432093 DOI: 10.1371/journal.pone.0044107] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 07/30/2012] [Indexed: 11/18/2022] Open
Abstract
Background Resveratrol is a natural polyphenolic compound that has cardioprotective, anticancer and anti-inflammatory properties. We investigated the capacity of resveratrol to protect RAW 264.7 cells from inflammatory insults and explored mechanisms underlying inhibitory effects of resveratrol on RAW 264.7 cells. Methodology/Principal Findings Murine RAW 264.7 cells were treated with resveratrol (1, 5, and 10 µM) and/or LPS (5 µg/ml). Nitric oxide (NO) and prostaglandin E2 (PGE2) were measured by Griess reagent and ELISA. The mRNA and protein levels of proinflammatory proteins and cytokines were analysed by ELISA, RT-PCR and double immunofluorescence labeling, respectively. Phosphorylation levels of Akt, cyclic AMP-responsive element-binding protein (CREB), mitogen-activated protein kinases (MAPKs) cascades, AMP-activated protein kinase (AMPK) and expression of SIRT1(Silent information regulator T1) were measured by western blot. Wortmannin (1 µM), a specific phosphatidylinositol 3-kinase (PI3-K) inhibitor, was used to determine if PI3-K/Akt signaling pathway might be involved in resveratrol’s action on RAW 264.7 cells. Resveratrol significantly attenuated the LPS-induced expression of nitric oxide (NO), prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in RAW 264.7 cells. Resveratrol increased Akt phosphorylation in a time-dependent manner. Wortmannin, a specific phosphatidylinositol 3-kinase (PI3-K) inhibitor, blocked the effects of resveratrol on LPS-induced RAW 264.7 cells activation. In addition, PI3-K inhibition partially abolished the inhibitory effect of resveratrol on the phosphorylation of cyclic AMP-responsive element-binding protein (CREB) and mitogen-activated protein kinases (MAPKs) cascades. Meanwhile, PI3-K is essential for resveratrol-mediated phosphorylation of AMPK and expression of SIRT1. Conclusion and Implications This investigation demonstrates that PI3-K/Akt activation is an important signaling in resveratrol-mediated activation of AMPK phosphorylation and SIRT1 expression, and inhibition of phosphorylation of CREB and MAPKs activation, proinflammatory mediators and cytokines production in response to LPS in RAW 264.7 cells.
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Affiliation(s)
- Yi Zong
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Lin Sun
- Department of Cardiology, The Second Affiliated Hospital, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Bin Liu
- Department of Spine Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yi-Shu Deng
- Department of Respiratory Medicine, The Third People’s of Yunnan Province, Kunming, Yunnan, People’s Republic of China
| | - Dong Zhan
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Yuan-Li Chen
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Ying He
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Jing Liu
- Department of Pathology, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
| | - Zong-Ji Zhang
- Department of Pathology, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
| | - Jun Sun
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
| | - Di Lu
- Department of Anatomy, Kunming Medical University, Kunming, Yunnan, People’s Republic of China
- * E-mail: (DL); (JS); (ZJZ)
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38
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Wu RSC, Yu CS, Liu KC, Huang HY, Ip SW, Lin JP, Chueh FS, Yang JS, Chung JG. Citosol (thiamylal sodium) triggers apoptosis and affects gene expressions of murine leukemia RAW 264.7 cells. Hum Exp Toxicol 2012; 31:771-9. [DOI: 10.1177/0960327111429137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Citosol (thiamylal sodium) is one of generally used anesthetic–sedative agents for clinical patients, and it has not been reported to show induction of cytotoxic effects in cancer cells, especially in mice leukemia RAW 264.7 cells in vitro. In the present study, we investigated the cytotoxic effects of citosol on mice leukemic RAW 264.7 cells, including the effects on protein and gene expression levels which are determined by Western blotting and DNA microarray methods, respectively. Results indicated that citosol induced cell morphological changes, cytotoxic effect, and induction of apoptosis in RAW 264.7 cells. Western blotting analysis demonstrated that citosol promoted the levels of Fas, cytochrome c, caspase 9 and 3 active form and Bax levels, but it suppressed Bcl-xl protein level that may lead to apoptotic death in RAW 264.7 cells. Furthermore, DNA microarray assay indicated that citosol significantly promoted the expression of 5 genes (Gm4884, Gm10883, Lce1c, Lrg1, and LOC100045878) and significantly inhibited the expression of 24 genes (Gm10679, Zfp617, LOC621831, Gm5929, Snord116, Gm3994, LOC380994, Gm5592, LOC380994, LOC280487, Gm4638, Tex24, A530064D06Rik, BC094916, EG668725, Gm189, Hist2h3c2, Gm8020, Snord115, Gm3079, Olfr198, Tdh, Snord115, and Olfr1249). Based on these observations, citosol induced cell apoptosis and influenced gene expression in mice leukemia RAW 264.7 cells in vitro.
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Affiliation(s)
- RS-C Wu
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
| | - C-S Yu
- School of Pharmacy, China Medical University, Taichung, Taiwan
| | - K-C Liu
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan
| | - H-Y Huang
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - S-W Ip
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - J-P Lin
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - F-S Chueh
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - J-S Yang
- Department of Pharmacology, China Medical University, Taichung, Taiwan
| | - J-G Chung
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
- Department of Biotechnology, Asia University, Taichung, Taiwan
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39
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Gómez-Piña V, Martínez E, Fernández-Ruíz I, del Fresno C, Soares-Schanoski A, Jurado T, Siliceo M, Toledano V, Fernández-Palomares R, García-Rio F, Arnalich F, Biswas SK, López-Collazo E. Role of MMPs in orchestrating inflammatory response in human monocytes via a TREM-1-PI3K-NF-κB pathway. J Leukoc Biol 2012; 91:933-945. [DOI: 10.1189/jlb.0711340] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
ABSTRACTThe MMPs constitute a family of endopeptidases that can cleavage extracellular proteins. They are involved in a number of events; some of these include inflammatory processes. One of its targets is the TREM-1, which has emerged as an important modulator of innate immune responses in mammals. This transmembrane glycoprotein possesses an Ig-like ectodomain readily shed by MMPs to generate sTREM-1. Whereas membrane-anchored TREM-1 amplifies inflammatory responses, sTREM-1 exhibits anti-inflammatory properties. Here we show that sustained cell surface expression of TREM-1 in human monocytes, through metalloproteinase inhibition, counteracts the well-characterized down-regulation of several proinflammatory cytokines during the ET time-frame, also known as M2 or alternative activation. In addition to the cytokines profile, other features of the ET phenotype were underdeveloped when TREM-1 was stabilized at the cell surface. These events were mediated by the signal transducers PI3Ks and Syk. We also show that sTREM-1 counteracts the proinflammatory response obtained by membrane TREM-1 stabilization but failed to induce ET on naïve human monocytes. As the sustained TREM-1 expression at the cell surface suffices to block the progress of a refractory state in human monocytes, our data indicate that TREM-1 and MMPs orchestrate an “adaptive” form of innate immunity by modulating the human monocytes response to endotoxin.
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Affiliation(s)
| | | | | | | | | | - Teresa Jurado
- Laboratory of Tumor Immunology, IdiPAZ , Madrid, Spain
| | - María Siliceo
- Laboratory of Tumor Immunology, IdiPAZ , Madrid, Spain
| | | | | | | | | | - Subhra K Biswas
- Singapore Immunology Network, Biomedical Sciences Institutes , Singapore
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The coumarin psoralidin enhances anticancer effect of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). Molecules 2012; 17:6449-64. [PMID: 22643355 PMCID: PMC6268812 DOI: 10.3390/molecules17066449] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/15/2012] [Accepted: 05/21/2012] [Indexed: 11/22/2022] Open
Abstract
Coumarins are a very common type of secondary plant metabolites with a broad spectrum of biological activities. Psoralidin is a naturally occurring furanocoumarin isolated from Psoralea corylifolia possessing anticancer and chemopreventive properties. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) triggers apoptosis in cancer cells with no toxicity toward normal tissues. Endogenous TRAIL plays an important role in immune surveillance and defence against cancer cells. Coumarins can modulate TRAIL-mediated apoptosis in cancer cells. We examined the cytotoxic and apoptotic activities of psoralidin in combination with TRAIL on HeLa cancer cells. The cytotoxicity was measured by MTT and LDH assays. The apoptosis was detected using annexin V-FITC staining and mitochondrial membrane potential was evaluated using DePsipher staining by fluorescence microscopy. Death receptor (TRAIL-R1/DR4 and TRAIL-R2/DR5) expression was analyzed using flow cytometry. Psoralidin enhanced TRAIL-induced apoptosis in HeLa cells through increased expression of TRAIL-R2 death receptor and depolarization of mitochondrial membrane potential. Our study indicated that psoralidin augmented the anticancer effects of TRAIL and confirmed a potential use of coumarins in cancer chemoprevention.
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Piotrowska H, Kucinska M, Murias M. Biological activity of piceatannol: Leaving the shadow of resveratrol. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2012; 750:60-82. [DOI: 10.1016/j.mrrev.2011.11.001] [Citation(s) in RCA: 275] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 10/26/2011] [Accepted: 11/03/2011] [Indexed: 01/27/2023]
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