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Jung F, Liu J, Yang S, Tseng H, Chou SP, Lin J, Jow G. FJU-C28 inhibits the endotoxin-induced pro-inflammatory cytokines expression via suppressing JNK, p38 MAPK and NF-κB signaling pathways. Pharmacol Res Perspect 2021; 9:e00876. [PMID: 34669271 PMCID: PMC8527890 DOI: 10.1002/prp2.876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 11/13/2022] Open
Abstract
Despite marked improvements in supportive care, the mortality rate of acute respiratory distress syndrome due to the excessive inflammatory response caused by direct or indirect lung injury induced by viral or bacterial infection is still high. In this study, we explored the anti-inflammatory effect of FJU-C28, a new 2-pyridone-based synthetic compound, on lipopolysaccharide (LPS)-induced inflammation in vitro and in vivo models. FJU-C28 suppressed the LPS-induced mRNA and protein expression of iNOS, COX2 and proinflammatory cytokines. The cytokine protein array results showed that LPS stimulation enhanced the secretion of IL-10, IL-6, GCSF, Eotaxin, TNFα, IL-17, IL-1β, Leptin, sTNF RII, and RANTES. Conversely, the LPS-induced secretion of RANTES, TIMP1, IL-6, and IL-10 was dramatically suppressed by FJU-C28. FJU-C28 suppressed the LPS-induced expression of RANTES, but its parental compound FJU-C4 was unable to diminish RANTES in cell culture media or cell lysates. FJU-C28 blocked the secretion of IL-6 and RANTES in LPS-activated macrophages by regulating the activation of JNK, p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB). FJU-C28 prevented the LPS-induced decreases in lung function including vital capacity (VC), lung compliance (C chord), forced expiratory volume at 100 ms (FEV100), and forced vital capacity (FVC) in mice with LPS-induced systemic inflammatory responses. FJU-C28 also reduced neutrophil infiltration in the interstitium, lung damage and circulating levels of IL-6 and RANTES in mice with systemic inflammation. In conclusion, these findings suggest that FJU-C28 possesses anti-inflammatory activities to prevent endotoxin-induced lung function decrease and lung damages by down-regulating proinflammatory cytokines including IL-6 and RANTES via suppressing the JNK, p38 MAPK and NF-κB signaling pathways.
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Affiliation(s)
- Fang Jung
- Department of Respiratory TherapyFu‐Jen Catholic UniversityNew Taipei CityTaiwan
- Deparment of ChemistryFu‐Jen Catholic UniversityNew Taipei CityTaiwan
| | - Jung‐Sen Liu
- Department of Respiratory TherapyFu‐Jen Catholic UniversityNew Taipei CityTaiwan
- Department of SurgeryCathay General HospitalTaipeiTaiwan
| | - Shih‐Hsing Yang
- Department of Respiratory TherapyFu‐Jen Catholic UniversityNew Taipei CityTaiwan
| | - Hui‐Yun Tseng
- Department of Respiratory TherapyFu‐Jen Catholic UniversityNew Taipei CityTaiwan
- Deparment of ChemistryFu‐Jen Catholic UniversityNew Taipei CityTaiwan
- Graduate Institute of Biomedical and Pharmaceutical ScienceFu‐Jen Catholic UniversityNew Taipei CityTaiwan
| | | | - Jau‐Chen Lin
- Department of Respiratory TherapyFu‐Jen Catholic UniversityNew Taipei CityTaiwan
| | - Guey‐Mei Jow
- School of MedicineFu‐Jen Catholic UniversityNew Taipei CityTaiwan
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Hu D, Su F, Yang G, Wang J, Zhang Y. Purification, Structural Characterization, and Anti-Inflammatory Effects of a Novel Polysaccharide Isolated from Orostachys fimbriata. Molecules 2021; 26:molecules26237116. [PMID: 34885697 PMCID: PMC8659062 DOI: 10.3390/molecules26237116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/22/2021] [Accepted: 11/22/2021] [Indexed: 02/05/2023] Open
Abstract
The present study elucidated the structural characteristics and anti-inflammatory activity of a novel polysaccharide isolated from Orostachys fimbriata, which is a traditional Chinese medicinal plant. O. fimbriata polysaccharide (OFP) was extracted and subsequently purified by chromatography using a DEAE cellulose-52 and Sephadex G-75 column. The molecular weight was determined as 6.2 kDa. HPGPC and monosaccharide composition analysis revealed a homogeneous polysaccharide containing only Glc. Chromatography and spectral analysis showed that the possible chemical structure consisted of →4)-α-Glcp-(1→ and a small quantity of →4,6)-β-Glcp-(1→ in the main chain and →6)-β-Glcp-(1→, α-Glcp-(1→, and β-Glcp-(1→ in the side chain. Morphological analysis using scanning electron microscopy (SEM) and atomic force microscopy (AFM) indicated that OFP had a multi-branched structure, and the sugar chain molecules of polysaccharide appeared aggregated. OFP was found to exhibit anti-inflammatory activity by reducing the secretion of inflammatory factors in RAW264.7 cells and by decreasing the extent of xylene-induced ear swelling in mice.
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Affiliation(s)
- Datong Hu
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (D.H.); (F.S.); (G.Y.)
| | - Fan Su
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (D.H.); (F.S.); (G.Y.)
| | - Gan Yang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (D.H.); (F.S.); (G.Y.)
| | - Jing Wang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; (D.H.); (F.S.); (G.Y.)
- Correspondence: (J.W.); (Y.Z.)
| | - Yingying Zhang
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
- Correspondence: (J.W.); (Y.Z.)
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Kim JE, Min SK, Hong JM, Kim KH, Han SJ, Yim JH, Park H, Kim IC. Anti-inflammatory effects of methanol extracts from the Antarctic lichen, Amandinea sp. in LPS-stimulated raw 264.7 macrophages and zebrafish. FISH & SHELLFISH IMMUNOLOGY 2020; 107:301-308. [PMID: 33068759 DOI: 10.1016/j.fsi.2020.10.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Abstract
The aim of the present study was to determine the anti-inflammatory effect of an extracts isolated from the lichen. Amandinea sp. was collected from the Antarctic and extracted with methanol. The basic screening of the anti-inflammatory property of the extracts was done using the NO assay. The extracts showed very little cytotoxicity, and reduced NO production in LPS-stimulated RAW 264.7 cells in a dose-dependent manner. Furthermore, the extracts inhibited LPS-induced release of pro-inflammatory cytokines such as interleukin-6 (IL-6), and tumor necrosis factor-α(TNF-α), and inflammatory mediators inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2). The extracts also reduced the cytosolic p-IκB-α level and the level of the nuclear factor p65. We examined the anti-inflammatory effects of the extracts using zebrafish in vivo. The extracts reduced the amount of reactive oxygen species (ROS) in LPS-induced zebrafish larvae and inhibited the mRNA expression of inflammatory cytokines and mediators in a tail-cutting induced model. These results are similar to those obtained in vitro with RAW 264.7 cells. Collectively, the data suggest that the extracts may contain one of more compounds with anti-inflammatory effects. Further studies are required to identify the candidate compound/s and to understand the mechanism of action of the extract.
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Affiliation(s)
- Jung Eun Kim
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea; Department of Pharmacy, Graduate School, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Seul Ki Min
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea
| | - Ju-Mi Hong
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea
| | - Kyung Hee Kim
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea
| | - Se Jong Han
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea; Department of Polar Sciences, University of Science and Technology, Incheon, 21990, Republic of Korea
| | - Joung Han Yim
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea
| | - Hyun Park
- Division of Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Il-Chan Kim
- Division of Polar Life Science, Korea Polar Research Institute (KOPRI), Incheon, 21990, Republic of Korea.
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Cho HD, Lee KW, Won YS, Kim JH, Seo KI. Cultivated Orostachys japonicus extract inhibits VEGF-induced angiogenesis via regulation of VEGFR2 signaling pathway in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2020; 256:112664. [PMID: 32045685 DOI: 10.1016/j.jep.2020.112664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/02/2020] [Accepted: 02/07/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Orostachys japonicus A. Berger (O. japonicus), so-called Wa-song in Korea, a traditional food and medicine that grows on mountain rocks and roof tiles. Wa-song containing various phenolic compounds have been reported as a medicinal plant for prevention of fibrosis, cancer, inflammation, and oxidative damage. AIM OF THE STUDY The present study was designed to examine the anti-angiogenic effects of cultivated Orostachys japonicus 70% ethanol extract (CE) in vascular endothelial growth factor (VEGF)-stimulated human umbilical vein endothelial cells (HUVECs). MATERIALS AND METHODS CE was prepared with 70% ethanol. HUVECs, rat aortic rings, and matrigel plug in mice were treated with CE (10-20 μg/mL) and VEGF (20-50 ng/mL), and the anti-angiogenic activities of CE were analyzed by SRB, wound healing, trans-well invasion, capillary-like tubule formation, rat aortas, Western blot, and matrigel plug assay. Phenolic compounds in CE were analyzed using a high-performance liquid chromatography (HPLC)-PDA system. RESULTS Treatment of CE (10-20 μg/mL) markedly suppressed proliferation of HUVECs in the presence (from 136.5% to 112.2%) or absence of VEGF (from 100.0% to 92.1%). The proliferation inhibitory effect of CE was caused by G0/G1 cell cycle arrest, and the decrease of CDK-2, CDK-4, Cyclin D1 and Cyclin E1. Furthermore, CE treatment showed significant angiogenesis inhibitory effects on motility, invasion and micro-vessel formation of HUVECs, rat aortic rings and subcutaneous matrigels under VEGF-stimulation condition. In HUVECs, CE-induced anti-angiogenic effect was regulated by inhibition of the PI3K/AKT/mTOR, MAPK/p38, MAPK/ERK, FAK-Src, and VEGF-VEGFR2 signaling pathways. CONCLUSION This study demonstrated that CE might be used as a potential natural substance, multi-targeted angiogenesis inhibitor, functional food material.
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Affiliation(s)
- Hyun-Dong Cho
- Industry-Academy Cooperation, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwan-Woo Lee
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Jeong-Ho Kim
- Department of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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Lee JW, Choi HJ, Kim EJ, Hwang WY, Jung MH, Kim KS. Fisetin induces apoptosis in uterine leiomyomas through multiple pathways. Sci Rep 2020; 10:7993. [PMID: 32409692 PMCID: PMC7224361 DOI: 10.1038/s41598-020-64871-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 04/20/2020] [Indexed: 01/20/2023] Open
Abstract
Although uterine leiomyomas are the most common benign uterine tumors in women, there is no effective therapy that can also preserve the uterus and maintain fertility. The work aimed to work was to discover a potential natural agent that has pharmacological activities on uterine leiomyomas with fewer adverse effects. We chose Rhus verniciflua Stokes (RVS) as a candidate after primary cytotoxicity testing, and analyzed the RVS components that showed pharmacological activity. Leiomyoma cells and myometrium cells were cultured from uterine tissues obtained from patients, and were treated with RVS at varying concentrations. RVS was cytotoxic in both leiomyoma and myometrium cells; however, the effects were more prominent in the leiomyoma cells. Among the bioactive components of RVS, fisetin showed significant pharmacological effects on leiomyoma cells. Fisetin showed excellent leiomyoma cell cytotoxicity and induced apoptotic cell death with cell cycle arrest. The apoptotic cell death appeared to involve not one specific pathway but multichannel pathways (intrinsic, extrinsic, MARK, and p53-mediated pathways), and autophagy. The multichannel apoptosis pathways were activated with a low concentration of fisetin (IC50). This is the first demonstration to show the pharmacological activities of fisetin on leiomyoma cells. These findings suggest that fisetin may be used for the prevention and treatment of uterine leiomyomas. Since fisetin can be obtained from plants, it may be a safe and effective alternative treatment for uterine leiomyomas.
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Affiliation(s)
- Jin-Woo Lee
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Hyuck Jai Choi
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Eun-Jin Kim
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Woo Yeon Hwang
- Department of Obstetrics & Gynecology, School of Medicine, Kyung Hee University, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Min-Hyung Jung
- Department of Obstetrics & Gynecology, School of Medicine, Kyung Hee University, Kyung Hee University Medical Center, Seoul, 02447, Korea.
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
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Lee H. Orostachys japonicus extract inhibits the lipopolysaccharide-induced pro-inflammatory factors by suppression of transcription factors. Food Sci Nutr 2020; 8:1812-1817. [PMID: 32328246 PMCID: PMC7174233 DOI: 10.1002/fsn3.1441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 12/28/2022] Open
Abstract
Orostachys japonicus (O. japonicus) was extracted with ethanol (EtOH) and sequentially separated with organic solvents, including n-hexane (Hex), dichloromethane (DCM), ethyl acetate (EtOAc), n-butanol (BuOH), and water (H2O). All the fractions were confirmed for anti-inflammatory activity in an inflammatory condition. The DCM fraction showed the highest anti-inflammatory ability. Here, we examined the effect of DCM fraction and investigated the intracellular signaling pathways in LPS-stimulated RAW 264.7 macrophage cells. The DCM fraction significantly inhibited the mRNA levels of pro-inflammatory mediators and cytokines including iNOS, COX-2, IL-1β, IL-2, IL-6, and IP-10 in LPS-stimulated cells. Also, the treatment of DCM fraction excellently reduced the expression of the proteins of AP-1 (phospho-c-Jun and phospho-c-Fos) and phospho-IRF3 as transcription factors. As a result, it suppressed LPS-induced inflammatory mediator and cytokines via inhibition of transcription factors. In conclusion, our data demonstrated that DCM fraction has a strong anti-inflammatory activity that improves the inflammatory state.
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Affiliation(s)
- Hyeong‐Seon Lee
- Department of Biomedical Laboratory ScienceJungwon UniversityGoesanSouth Korea
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7
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LEE SH, LEE H, KIM JC. Anti-inflammatory effect of water extracts obtained from doenjang in LPS-stimulated RAW 264.7 cells. FOOD SCIENCE AND TECHNOLOGY 2019. [DOI: 10.1590/fst.15918] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Hyesook LEE
- College of Korean Medicine, Republic of Korea
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8
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Orostachys japonicus ethanol extract inhibits 2,4-dinitrochlorobenzene-induced atopic dermatitis-like skin lesions in NC/Nga mice and TNF-α/IFN-γ-induced TARC expression in HaCaT cells. Toxicol Res 2019; 36:99-108. [PMID: 32257921 DOI: 10.1007/s43188-019-00026-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 10/02/2019] [Accepted: 10/09/2019] [Indexed: 01/10/2023] Open
Abstract
The risk of atopic dermatitis (AD)-like skin lesions has increased due to the elevated levels of allergens worldwide. Natural-origin agents, which are effective and safe, show promise for the prevention and treatment of inflammatory conditions. Orostachys japonicus (OJ) A. Berger is an ingredient of traditional herbal medicines for fever, gingivitis, and cancer in Korea, China, and Japan. However, the effect of OJ on AD-like skin lesions is unknown. Therefore, we investigated the effect of OJ ethanol extract (OJEE) on AD-like skin symptoms in mice and cells. OJEE reduced the 2,4-dinitrochlorobenzene-induced AD severity, serum levels of IgE and TARC, and mRNA levels of TARC, TNF-α, and IL-4 in NC/Nga mice. Histopathological analysis showed that OJEE reduced the thickness of the epidermis/dermis and dermal infiltration of inflammatory cells in ear tissue. Furthermore, OJEE suppressed the TNF-α/IFN-γ-increased TARC mRNA level by inhibiting NF-κB and STAT1 activation in HaCaT cells. Taken together, our findings show that OJEE reduced the risk of AD-like skin symptoms by decreasing TARC expression via inhibiting NF-κB and STAT1 activation in skin keratinocytes and thus shows promise as an alternative therapy for AD-like skin lesions.
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Kim JH, Nam GS, Kim SH, Ryu DS, Lee DS. Orostachys japonicus exerts antipancreatic cancer activity through induction of apoptosis and cell cycle arrest in PANC-1 cells. Food Sci Nutr 2019; 7:3549-3559. [PMID: 31763005 PMCID: PMC6848830 DOI: 10.1002/fsn3.1207] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 07/30/2019] [Accepted: 08/12/2019] [Indexed: 12/11/2022] Open
Abstract
Targeted therapy at the molecular level is important for pancreatic cancer treatment. This study looked over the anticancer activity of Orostachys japonicus in a human pancreatic cancer cell line, PANC-1. An ethyl acetate fraction containing quercetin, kaempferol, and flavonol glycosides from O. japonicus (OJE) exhibited significant anticancer activity against the PANC-1. OJE activated caspase-3, caspase-8, and caspase-9, leading to the induction of both intrinsic and extrinsic apoptosis pathways. It also inhibited cyclin D1, cyclin B1, and cyclin-dependent kinase 4, representing cell cycle arrest at both G1/S and G2/M phases. In addition, OJE phosphorylated MAPKs such as p38, JNK, and ERK, which are important upstream signaling factors in apoptosis and arrest of cell cycle inducing system. In conclusion, OJE effectively exerted antipancreatic cancer activity via induction of apoptosis directed by both intrinsic and extrinsic pathways and arrest of cell cycle regulated at both G1/S and G2/M stages, which is activated by MAPKs, p38, JNK, and ERK.
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Affiliation(s)
- Ji Hyun Kim
- Department of Smart Foods and DrugsGraduate School of Inje UniversityGimhaeKorea
| | - Gi Suk Nam
- Department of Smart Foods and DrugsGraduate School of Inje UniversityGimhaeKorea
| | - Sung Hyun Kim
- Department of Smart Foods and DrugsGraduate School of Inje UniversityGimhaeKorea
| | - Deok Seon Ryu
- Department of Biomedical Laboratory ScienceSoonchunhyang UniversityAsanKorea
| | - Dong Seok Lee
- Department of Smart Foods and DrugsGraduate School of Inje UniversityGimhaeKorea
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Hu M, Li X, Zhang J, Yuan Z, Fu Y, Ma X, Ren N. GEN-27 exhibits anti-inflammatory effects by suppressing the activation of NLRP3 inflammasome and NF-κB pathway. Cell Biol Int 2019; 43:1184-1192. [PMID: 30632647 DOI: 10.1002/cbin.11101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Prolonged inflammation and deregulated cytokine production are associated with diversified inflammatory diseases. Genistein (GEN), the active and predominant isoflavonoid in dietary soybean, possesses anti-inflammatory activity. Our study aimed to assess the anti-inflammatory effects of GEN-27, a derivative of GEN, as well as explore the potential molecular mechanisms using lipopolysaccharide (LPS)-induced RAW264.7 cells. In our study, we demonstrated that GEN-27 administration (1, 5, or 10 μM) dose-dependently inhibited nitrite and nitric oxide (NO) levels in LPS-stimulated RAW264.7 cells. Also, GEN-27 suppressed the release of LPS-induced pro-inflammatory cytokines including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), IL-6, and IL-18. Moreover, GEN-27 attenuated LPS-induced inducible NO synthase (iNOS), and cyclooxygenase-2 (COX-2) expressions at messenger RNA and protein levels, and reversed the promoter activity of iNOS in RAW264.7 cells. Mechanistically, GEN-27 abated LPS-induced reactive oxygen species production, as well as mitigated LPS-induced increase of caspase 1 activity and the protein levels of NOD-like receptor 3 (NLRP3), anti-apoptosis-associated speck-like protein-containing a CRAD (ASC), and caspase 1 in RAW264.7 cells in a dose-dependent manner. Similarly, GEN-27 dose-dependently weakened adenosine triphosphate-induced NLRP3 and IL-1β in RAW264.7 cells. In addition, GEN-27 treatment significantly suppressed LPS-induced phosphorylation of nuclear factor-κB (NF-κB) p65 and alleviated LPS-induced increase of transcriptional activity of NF-κB in RAW264.7 cells. In summary, these results revealed that GEN-27 exhibited anti-inflammatory effects by suppressing the activation of NLRP3 inflammasome and NF-κB pathway, suggesting that GEN-27 may be served as a promising therapeutic agent for the prevention and therapy of inflammatory-associated diseases.
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Affiliation(s)
- Miao Hu
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Xiangping Li
- Clinical Laboratory, Henan Luoyang Orthopedic Hospital, Henan Provincial Orthopedic Hospital, Zhengzhou, 450000, China
| | - Junli Zhang
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Zengyan Yuan
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Yuping Fu
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Xiaojuan Ma
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Nannan Ren
- Clinical Laboratory, Xi'an No. 4 Hospital, Xi'an, 710004, China
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Jeong H, Kim JW, Yang D, Jeong TW, Zhao J, Seo JH, Shin DG, Cha JD, Han KM, Lim CW, Kim B. Orostachys japonicus A. Berger (Crassulaceae) Exerts Antidiabetic Activity by Improving Glucose and Lipid Levels in Type 2 Diabetic Mice. J Med Food 2019; 22:797-809. [DOI: 10.1089/jmf.2018.4391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Hyuneui Jeong
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jong-Won Kim
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Daram Yang
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Tae-Won Jeong
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jing Zhao
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jeong Hun Seo
- Research & Development Center of GENERAL BIO Co., Ltd., Namwon, Korea
| | - Dong Gue Shin
- Research & Development Center of GENERAL BIO Co., Ltd., Namwon, Korea
| | - Jeong-Dan Cha
- Research & Development Center of GENERAL BIO Co., Ltd., Namwon, Korea
| | - Kang Min Han
- Department of Pathology, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Chae Woong Lim
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Bumseok Kim
- Biosafety Research Institute and Laboratory of Pathology (BK21 Plus Program), College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
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Cho HD, Lee KW, Won YS, Shin DY, Seo KI. Studies on the Anti-Angiogenic Activities of Wild and Cultivated Orostachys japonicus Extracts in Human Umbilical Vein Endothelial Cells. J Food Sci 2019; 84:1764-1775. [PMID: 31218702 DOI: 10.1111/1750-3841.14675] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/24/2019] [Accepted: 05/05/2019] [Indexed: 11/30/2022]
Abstract
Orostachys japonicus has traditionally been used as a food product and a fork medicine in Asia to treat various diseases. Angiogenesis is a critical process that contributes to various chronic diseases via excessive delivery of oxygen and nutrients. Common anti-angiogenic drugs have serious problems related to high costs and side effects; thus, natural products with low costs and no cytotoxicity have garnered increasing interest. In this study, we evaluated and compared the anti-angiogenic effects and phenolic compound contents between wild (WOEs) and cultivated O. japonicus extracts (COEs) prepared under various extract conditions. WOEs and COEs suppressed cell proliferation of human umbilical vein endothelial cells (HUVECs) and inhibited vascular endothelial growth factor-induced chemotactic migration, invasion, and capillary-like tube formation in HUVECs. Among COEs, that prepared by 70% EtOH (70% CE) showed the most effective anti-angiogenic activity in HUVECs. When compared to WOEs, total polyphenol and total flavonoid contents were 1.28 to 4.38 times higher in COEs, and 70% CE contained the greatest flavonoid contents (28.28 ± 0.93 mg%), as well as the highest levels of major phenolic compounds including gallic acid (21.84 µg/mL), epicatechin-gallate (6.58 µg/mL), kaempferol (6.32 µg/mL), and quercetin (8.55 µg/mL). Although further studies are required to identify the molecular mechanisms behind these anti-angiogenic effects, 70% CE could be used as an herbal medicine, functional food ingredient, and potent angiogenesis inhibitor. PRACTICAL APPLICATION: Environmental factors such as altitude, nutrients, exposure to sunlight, and temperature can influence the type and quantity of bioactive components in plants. The advantage of cultivated plants is that the above-mentioned factors can be artificially adjusted compared to wild plants. Based on economic efficiency, productivity, and consistent quality, anti-angiogenesis activity of cultivated O. japonicus is of greater commercial value as a functional food than wild O. japonicus.
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Affiliation(s)
- Hyun-Dong Cho
- Industry-Academy Cooperation, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Kwan-Woo Lee
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Yeong-Seon Won
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
| | - Dong-Young Shin
- Dept. of Development in Oriental Medicine Resources, Sunchon Natl. Univ., Suncheon, 57922, Republic of Korea
| | - Kwon-Il Seo
- Dept. of Biotechnology, Dong-A Univ., Busan, 49315, Republic of Korea
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Du L, Li J, Zhang X, Wang L, Zhang W, Yang M, Hou C. Pomegranate peel polyphenols inhibits inflammation in LPS-induced RAW264.7 macrophages via the suppression of TLR4/NF-κB pathway activation. Food Nutr Res 2019; 63:3392. [PMID: 31073284 PMCID: PMC6495109 DOI: 10.29219/fnr.v63.3392] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/25/2019] [Accepted: 03/28/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUNDS Inflammatory response mediated by activated immune cells is a vital process in host defense system while responding to various stresses. Our previous studies have indicated that pomegranate peel polyphenols (PPPs) and their main components punicalagin (PC) and ellagic acid (EA) decreased pro-inflammatory cytokines and inflammatory mediators by regulating the mitogen-activated protein kinases (MAPKs) pathway, but whether these tested polyphenols play an important role in NF-κB signaling pathway, another crucial pathway of inflammation, remains unclear. OBJECTIVE In this study, we analyzed the anti-inflammatory effect of these polyphenols via TLR4-NF-κB pathway in lipopolysaccharide (LPS)-induced RAW264.7 macrophages. METHODS Different concentrations of PPPs, PC, and EA were pre-incubated with RAW264.7 macrophages and then stimulated with LPS (1 μg/mL), and the effects of reactive oxygen species and TLR4 were investigated. Moreover, NF-κB p65 nuclear translocation and phosphorylation, and degradation of IκB were measured by Western blot. Furthermore, the influence of pro-inflammatory cytokines was detected by enzyme-linked immunosorbent assay (ELISA). RESULTS Our data showed that PPPs, PC, and EA inhibited LPS-induced intracellular ROS production and suppressed the mRNA and protein expression levels of TLR4 in a dose-dependent manner. Moreover, the anti-inflammatory mechanism was involved in blocking LPS-induced phosphorylation, degradation of IκB, and nuclear translocation of p65. Additionally, PPPs and PC exhibited a stronger anti-inflammatory effect than that of EA. CONCLUSION The results indicated that PPPs possess potent anti-inflammatory effect, and PC was the main effective component in PPPs, which provided new insights into the utilization of PPPs to prevent inflammation-associated disorders.
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Affiliation(s)
- Lin Du
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
- Department of Food Quality and Safety, College of Food & Bioengineering, Henan University of Science and Technology, Luoyang, China
| | - Jianke Li
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi’an, China
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Shaanxi Normal University, Xi’an, China
| | - Xitong Zhang
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Lifang Wang
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Weimin Zhang
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Mi Yang
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
| | - Chen Hou
- Department of Food Quality and Safety, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi’an, China
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Orostachys japonicus A. Berger Extracts Induce Immunity-Enhancing Effects on Cyclophosphamide-Treated Immunosuppressed Rats. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9461960. [PMID: 30723745 PMCID: PMC6339714 DOI: 10.1155/2019/9461960] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/21/2018] [Accepted: 11/29/2018] [Indexed: 12/17/2022]
Abstract
In this study, we evaluated the immunity-enhancing effects of Orostachys japonicus A. Berger (OJ). To examine the immune protective effect in vitro, primary mouse splenocytes were treated with water or ethanol extracts of OJ in the absence or presence of cyclophosphamide (CY), which is a cytotoxic, immunosuppressive agent. The extracts increased the propagation of splenocytes and inhibited CY-induced cytotoxicity. Further, to examine the immunostimulatory effects in vivo, adult Wistar rats were orally administered OJ extracts with or without CY treatment. With the administration of OJ extracts, CY-treated immunosuppressed rats showed improved physical endurance, as assessed by the forced swim test. In addition, extract administration increased not only the number of immunity-related cells but also the levels of plasma cytokines. OJ extracts also recovered splenic histology in CY-treated rats. These findings suggest that an OJ regimen can enhance immunity by increasing immune cell propagation and specific plasma cytokine levels.
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Anti-Inflammatory Effects of Aster incisus through the Inhibition of NF- κB, MAPK, and Akt Pathways in LPS-Stimulated RAW 264.7 Macrophages. Mediators Inflamm 2018; 2018:4675204. [PMID: 30622433 PMCID: PMC6304821 DOI: 10.1155/2018/4675204] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/18/2018] [Accepted: 10/03/2018] [Indexed: 01/29/2023] Open
Abstract
Aster incisus is a common flower found in almost all regions of South Korea. In the current study, we investigated the potential antioxidant and anti-inflammatory properties of the Aster incisus methanol extract in LPS-stimulated RAW 264.7 cells. We analyzed the phytochemicals contained in the extract by GC-MS. GC-MS results showed that the Aster incisus extract contains 9 known compounds. Later on, DPPH assay, WST-1 assay, nitric oxide (NO) assay, Western blot, and RT-PCR were conducted to investigate the anti-inflammatory effects of the extract. Our WST-1 assay results revealed that Aster incisus did not affect the viability of all tested cell lines up to a concentration of 200 μg/ml; therefore, lower concentrations (50 μg/ml and 150 μg/ml) were used for further assays. Aster incisus scavenged DPPH and inhibited the production of NO. Aster incisus also reduced significantly the production of inflammation-related enzymes (iNOS, Cox-2) and cytokines (TNFα, IL-1β, and IL-6) and the gene expression of the proinflammatory cytokines. Additionally, further Western blot results indicated that Aster incisus inhibited the expression of p-PI3K, p-IκBα, p-p65 NF-κB, p-ERK1/2, p-SAPK/JNK, and p-Akt. Our results demonstrated that Aster incisus suppressed the expression of the inflammation mediators through the regulation of NF-κB, MAPK, and Akt pathways.
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Harikrishnan H, Jantan I, Haque MA, Kumolosasi E. Anti-Inflammatory Effects of Hypophyllanthin and Niranthin Through Downregulation of NF-κB/MAPKs/PI3K-Akt Signaling Pathways. Inflammation 2018; 41:984-995. [PMID: 29427163 DOI: 10.1007/s10753-018-0752-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hypophyllanthin (HYP) and niranthin (NIR) are major lignans in Phyllanthus spp. and have been shown to possess strong anti-inflammatory activity. In this study, we investigated the anti-inflammatory effects and the underlying molecular mechanisms of HYP and NIR in in vitro cellular model of LPS-induced U937 macrophages. The effects of HYP and NIR on the production of prostaglandin E2 (PGE2), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) were measured by using ELISA, Western blot, and qRT-PCR. The expressions of signaling molecules related to nuclear factor-kappa B (NF-κB), mitogen-activated protein kinases (MAPKs), and phosphatidylinositol 3'-kinase-Akt (PI3K-Akt) signaling pathways were examined. The role of NF-κB, MAPKs, and Akt signaling pathways was confirmed by using specific inhibitors (BAY 11-7082, U0126, SB202190, SP600125, and LY294002) mediated suppression of TNF-α and COX-2 production. HYP and NIR significantly inhibited the protein and gene levels of COX-2 as well as the downstream signaling products of PGE2, TNF-α, and IL-1β. HYP and NIR also suppressed the inhibitors of kappa B (IκB), IkB kinases (Ikkα/β), NF-κB phosphorylation, and IκB degradation. HYP suppressed the phosphorylation of c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK), and p38 while NIR only suppressed JNK and ERK but did not have effect on p38. These results demonstrate that HYP and NIR downregulated COX-2, TNF-α, and IL-1β gene expressions in U937 macrophages by interfering with the activation of NF-κB, MAPKs, and Akt. In conclusion, these lignans have potential to be developed as anti-inflammatory agents targeting the NF-κB, MAPK, and PI3K-Akt pathways.
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Affiliation(s)
- Hemavathy Harikrishnan
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Ibrahim Jantan
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.
| | - Md Areeful Haque
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Endang Kumolosasi
- Drug and Herbal Research Center, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
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Pomegranate peel polyphenols inhibits inflammation in LPS-induced RAW264.7 macrophages via the suppression of MAPKs activation. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.01.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Xu J, Zhao Y, Aisa HA. Anti-inflammatory effect of pomegranate flower in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. PHARMACEUTICAL BIOLOGY 2017; 55:2095-2101. [PMID: 28832232 PMCID: PMC6130474 DOI: 10.1080/13880209.2017.1357737] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 07/14/2017] [Accepted: 07/17/2017] [Indexed: 05/26/2023]
Abstract
CONTEXT Punica granatum L (Punicaceae) flower is an important diabetes treatment in oriental herbal medicine. OBJECTIVE This study investigates the inflammation effects of pomegranate flower (PFE) ethanol extract in LPS-induced RAW264.7 cells. MATERIALS AND METHODS PFE (10, 25, 50, 100 μg/mL) was applied to 1 μg/mL LPS-induced RAW 264.7 macrophages in vitro. Levels of nitric oxide (NO), prostaglandin E2 (PGE2) and pro-inflammatory cytokines interleukin (IL)-1β (IL-1β), interleukin (IL)-6 (IL-6) and tumor necrosis factor (TNF-α) in the supernatant fraction were determined using enzyme-linked immunosorbent assay (ELISA). Expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS), phosphorylation of mitogen-activated protein kinase (MAPK) subgroups extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and P38, as well as nuclear factor-κB (NF-κB) activation in extracts were detected via Western blot. RESULTS 10-100 μg/mL PFE decreased the production of NO (IC50 value = 31.8 μg/mL), PGE2 (IC50 value = 54.5 μg/mL), IL-6 (IC50 value = 48.7 μg/mL), IL-1β (IC50 value = 71.3 μg/mL) and TNF-α (IC50 value = 62.5 μg/mL) in LPS-stimulated RAW 264.7 cells significantly. A mechanism-based study showed that phosphorylation of ERK1/2, p38, JNK and translocation of the NF-B p65 subunit into nuclei were inhibited by the PFE treatment. DISCUSSION AND CONCLUSION These results show that PFE produced potential anti-inflammatory effect through modulating the synthesis of several mediators and cytokines involved in the inflammatory process.
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Affiliation(s)
- Jianjun Xu
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yongxin Zhao
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
| | - Haji Akber Aisa
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China
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Pharmacological evaluation of 9,10-dihydrochromeno[8,7-e][1,3]oxazin-2(8H)-one derivatives as potent anti-inflammatory agent. Pharmacol Rep 2017; 69:419-425. [PMID: 31994109 DOI: 10.1016/j.pharep.2016.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 12/04/2016] [Accepted: 12/09/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Non-steroidal anti-inflammatory drugs (NSAIDs) are the most widely administered drugs for the treatment of inflammation. However, they usually cause some unexpected side effects. Coumarins and their derivatives exhibit broad-spectrum biological activities. In order to develop new anti-inflammatory drugs with high anti-inflammatory activity and less side effects, a series of 9-substituted-9,10-dihydrochromeno[8,7-e][1,3]oxazin-2(8H)-one derivatives were designed, synthesized, and screened for their anti-inflammatory activities. METHODS We investigated the effect of compound 9-(2-chlorophenyl)-9,10-dihydrochromeno[8,7-e][1,3]oxazin-2(8H)-one (B3) on lipopolysaccharide (LPS)-induced cytokine levels in RAW 264.7 cells at concentrations between 6.25 μg/ml and 25 μg/ml. Concentrations of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were measured by enzyme-linked immunosorbent assay (ELISA). Moreover, mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) activation was investigated by western blot assay. RESULTS Compound B3 could inhibit inflammatory responses via suppression of the NF-κB and MAPK signaling pathways. Docking study of the prepared compounds was performed for the study of interaction of molecules with the active site of TNF-α. CONCLUSION 9,10-Dihydrochromeno[8,7-e][1,3]oxazin-2(8H)-one derivatives showed anti-inflammatory activity. Compound B3 was the most potent. The results of this study are encouraging further investigations to develop compound B3 as a novel therapeutic agent for inflammatory disorders.
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Shi L, Lin Q, Li X, Nie Y, Sun S, Deng X, Wang L, Lu J, Tang Y, Luo F. Alliin, a garlic organosulfur compound, ameliorates gut inflammation through MAPK-NF-κB/AP-1/STAT-1 inactivation and PPAR-γ activation. Mol Nutr Food Res 2017; 61. [PMID: 28371322 DOI: 10.1002/mnfr.201601013] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/12/2017] [Accepted: 03/17/2017] [Indexed: 12/22/2022]
Abstract
SCOPE In this study, the anti-inflammatory effects and the molecular mechanism of alliin were analyzed in dextran sulfate sodium (DSS)-induced colitis mice and lipopolysaccharide-stimulated RAW264.7 cell model. METHODS The phenotype of mice was recorded in the DSS-induced and/or alliin (500 mg/kg) groups. Histopathological alterations were analyzed by H&E staining. MPO and MDA of colon tissues were measured. The mRNA expression levels of inflammatory factors were determined by qRT-PCR, and protein expressions of inflammatory factors or activation of kinases were determined by Western blotting. RESULTS Oral administration of alliin significantly inhibited the decrease of body weight, improved the DAI and decreased the infiltration of inflammatory cells in colonic tissues. The content of NO, MDA, and MPO, the expression of iNOS and inflammatory factors as well as MAPK and the phosphorylation of PPAR-γ were inhibited in alliin-treated group. Treatment with alliin significantly repressed the expression of inflammatory factors in LPS-stimulated RAW264.7 cells. Further research demonstrated that alliin repressed LPS-induced AP-1/NF-κB/STAT-1 activation by inhibiting the phosphorylations of p38, JNK, and ERK1/2-regulated PPAR-γ activation. CONCLUSION Our results show that alliin ameliorates DSS-induced ulcerative colitis and inhibits the inflammatory responses in LPS-stimulated RAW264.7 cells partly through inhibiting ERK1/2-, JNK-/PPAR-γ-stimulated NF-κB/AP-1/STAT-1 activations.
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Affiliation(s)
- Limin Shi
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Qinlu Lin
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Xinhua Li
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, China
| | - Ying Nie
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Shuguo Sun
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Xiyun Deng
- Department of Pathology, Medical College, Hunan Normal University, Changsha, China
| | - Long Wang
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Jun Lu
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Yiping Tang
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
| | - Feijun Luo
- Laboratory of Molecular Nutrition, College of Food Science and Engineering, National Engineering Laboratory for Deep Processing of Rice and Byproducts, Central South University of Forestry and Technology, Changsha, China
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Dong L, Zhang Y, Wang X, Dong YX, Zheng L, Li YJ, Ni JM. In vivo and in vitro anti-inflammatory effects of ethanol fraction from Periploca forrestii Schltr. Chin J Integr Med 2017; 23:528-534. [PMID: 28283936 DOI: 10.1007/s11655-017-2803-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To determine the anti-inflflammatory effects of an ethanol fraction of Periploca forrestii Schltr. (EFPF) and to investigate the potential mechanisms underlying in vivo and in vitro models. METHODS The antiinflflammatory effects of EFPF were evaluated using the xylene-induced mouse ear edema and carrageenan-induced rat paw edema models in vivo. In vitro, RAW264.7 cells were exposed to 0-800 μg/mL EFPF and the cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Then cells were treated with different concentrations of EFPF (100-400 μg/mL) and stimulated with lipopolysaccharide (LPS, 1 μg/mL) for 24 h. The supernatant was analyzed for nitric oxide (NO) using the Griess reagent, and the levels of inflflammatory mediators and cytokines were determined using enzyme-linked immunosorbent assays for prostaglandin E2 (PGE2), tumor necrosis factor α (TNF-α), interleukin (IL) 6, and IL-10. The protein expressions of inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), nuclear factor κB (NF-κB), and mitogen-activated protein kinases (MAPKs) including extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and p38 MAPK were examined by Western blot. RESULTS Compared with the control group, EFPF signifificantly reduced mouse ear edema and rat paw edema rate (P<0.05 or P<0.01). Compared with the LPS group, EFPF signifificantly inhibited the LPS-stimulated production of NO, PGE2, TNF-α and IL-6 (P<0.05 or P<0.01), and increased the IL-10 production (P<0.05). EFPF also signifificantly inhibited LPS-induced protein expressions of iNOS and COX-2, suppressed the phosphorylation and degradation of inhibitor of NF-κB-α, decreased p65 level, and inhibited the phosphorylation of p38, ERK1/2 and JNK P<0.05 or P<0.01). CONCLUSION EFPF exerted anti-inflflammatory effect by reducing protein expressions of iNOS and COX-2 and the production of the inflflammation factors, including TNF-α, IL-6, NO and PGE2, mainly through inhibition of LPS-mediated stimulation of NF-κB and MAPK signaling pathways.
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Affiliation(s)
- Li Dong
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yun Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xia Wang
- Engineering Research Center for the Development and Application of Ethnic Medicine and Chinese Medicine (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China
| | - Yong-Xi Dong
- Engineering Research Center for the Development and Application of Ethnic Medicine and Chinese Medicine (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China
| | - Lin Zheng
- Engineering Research Center for the Development and Application of Ethnic Medicine and Chinese Medicine (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China
| | - Yong-Jun Li
- Engineering Research Center for the Development and Application of Ethnic Medicine and Chinese Medicine (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China
| | - Jing-Man Ni
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China.
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Purushotham PM, Kim JM, Jo EK, Senthil K. Withanolides against TLR4-Activated Innate Inflammatory Signalling Pathways: A Comparative Computational and Experimental Study. Phytother Res 2016; 31:152-163. [PMID: 27859734 DOI: 10.1002/ptr.5746] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/23/2016] [Accepted: 10/22/2016] [Indexed: 11/12/2022]
Abstract
Innate inflammations are dominant causes of poor health and high mortality. The pathogen-associated molecular pattern and lipopolysaccharide (LPS) are sensed by immune cells through activation of toll-like receptor 4 leading to mitogen-activated protein kinases (MAPKs) and NF-κB activations. Controlled MAPK and Nf-κB inhibitors have been proposed as potential antiinflammatory drugs. Withania somnifera is an important medicinal herb with known antiinflammatory activity. In this study, the selected Withania somnifera extracts and withanolides were analysed on LPS-induced macrophages comparatively. Molecular docking analysis revealed withaferin A, withanone and withanolide A as effective withanolides against inflammatory target molecules. In experiments, withaferin A and withanone treatment had prominent suppressions on LPS-induced expression of pro-inflammatory cytokines in bone marrow-derived macrophages. Withaferin A regulated all the major four pathways (MAPKs and NF-κB) involved in innate inflammations. Similarly among the Withania extracts analysed, the in vitro propagated leaf and field grown root extracts containing high withaferin A content suppressed the inflammatory molecules through NF-κB and MAPK pathways. Withaferin A was found to be best in suppressing the activated inflammatory pathways among all the analysed withanolides. Therefore, withaferin A and extracts with high withaferin A content can be used as promising drug candidates against innate inflammations. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Preethi M Purushotham
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women University, Coimbatore, 641043, Tamil Nadu, India
| | - Jin-Man Kim
- Department of Pathology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Eun-Kyeong Jo
- Infection Signaling Network Research Center, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Kalaiselvi Senthil
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women University, Coimbatore, 641043, Tamil Nadu, India
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Sowndhararajan K, Santhanam R, Hong S, Jhoo JW, Kim S. Suppressive effects of acetone extract from the stem bark of three Acacia species on nitric oxide production in lipopolysaccharide-stimulated RAW 264.7 macrophage cells. Asian Pac J Trop Biomed 2016. [DOI: 10.1016/j.apjtb.2016.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Lu Y, Hu D, Ma S, Zhao X, Wang S, Wei G, Wang X, Wen A, Wang J. Protective effect of wedelolactone against CCl 4 -induced acute liver injury in mice. Int Immunopharmacol 2016; 34:44-52. [DOI: 10.1016/j.intimp.2016.02.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/07/2016] [Accepted: 02/02/2016] [Indexed: 11/16/2022]
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Kim BJ, Hong C. Role of transient receptor potential melastatin type 7 channel in gastric cancer. Integr Med Res 2016; 5:124-130. [PMID: 28462107 PMCID: PMC5381434 DOI: 10.1016/j.imr.2016.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 04/01/2016] [Accepted: 04/05/2016] [Indexed: 01/11/2023] Open
Abstract
Transient receptor potential (TRP) proteins are a family of ion channels, which are responsible for a wide array of cellular functions. In particular, TRP melastatin type (TRPM) 7 is expressed everywhere and permeable to divalent cations such as Mg2+ and Ca2+. It contains a channel and a kinase domain. Recent studies indicate that activation of TRPM7 plays an important role in the growth and survival of gastric cancer cells. In this review, we describe and discuss the findings of recent studies that have provided novel insights of the relation between TRPM7 and gastric cancer.
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Affiliation(s)
- Byung Joo Kim
- Division of Longevity and Biofunctional Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea.,Healthy Aging Korean Medical Research Center, School of Korean Medicine, Pusan National University, Yangsan, Korea
| | - Chansik Hong
- Department of Physiology, Seoul National University, College of Medicine, Seoul, Korea
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Tursun X, Zhao Y, Alat Z, Xin X, Tursun A, Abdulla R, AkberAisa H. Anti-Inflammatory Effect of Rosa rugosa Flower Extract in Lipopolysaccharide-Stimulated RAW264.7 Macrophages. Biomol Ther (Seoul) 2016; 24:184-90. [PMID: 26797110 PMCID: PMC4774500 DOI: 10.4062/biomolther.2015.090] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 09/10/2015] [Accepted: 09/24/2015] [Indexed: 12/21/2022] Open
Abstract
Rosa rugosa Thunb, a deciduous shrub of the genus Rosa, has been widely used to treat stomach aches, diarrhoea, pain, and chronic inflammatory disease in eastern Asia. In recent years, our research team has extensively studied the Rosa rugosa flower extract, and specifically undertook pharmacological experiments which have optimized the extraction process. Our methods have yielded a standard extract enriched in phenolic compounds, named PRE. Herein, we expand our efforts and evaluated the anti-inflammatory activity of PRE on lipopolysaccharide (LPS)-induced inflammation in RAW 264.7 macrophages. PRE significantly inhibited production of nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor (TNF)-a, interleukin (IL)-6, and interleukin 1β (IL-1β), as well as expression of their synthesizing enzymes, inducible nitric oxide synthase (iNOS) and cyclooxygenase2 (COX-2). Furthermore, PRE inhibited activity of mitogen-activated protein kinases (MAPK) as well as nuclear factor-kappa B (NF-κB) signaling pathway. Our findings are the first to explain the anti-inflammatory mechanism by PRE in LPS-stimulated macrophages. Given these results, we propose that PRE has therapeutic potential in the prevention of inflammatory disorders.
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Affiliation(s)
- Xirali Tursun
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, China
| | - Yongxin Zhao
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Zulfiya Alat
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xuelei Xin
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, China.,State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Adila Tursun
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Rahima Abdulla
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, China
| | - Haji AkberAisa
- Key Laboratory of Chemistry of Plant Resources in Arid Regions, China.,State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
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Taher M, Aminuddin A, Susanti D, Aminudin NI, On S, Ahmad F, Hamidon H. Cytotoxic, Anti-Inflammatory and Adipogenic Effects of Inophyllum D, Calanone, Isocordato-oblongic acid, and Morelloflavone on Cell Lines. ACTA ACUST UNITED AC 2016. [DOI: 10.20307/nps.2016.22.2.122] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Muhammad Taher
- Department of Pharmaceutical Technology, Faculty of Pharmacy, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Pahang, Malaysia
| | - Amnani Aminuddin
- Department of Biomedical Science, Faculty of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Pahang, Malaysia
| | - Deny Susanti
- Department of Chemistry, Faculty of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Pahang, Malaysia
| | - Nurul Iman Aminudin
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor, Malaysia
| | - Shamsul On
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor, Malaysia
| | - Farediah Ahmad
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor, Malaysia
| | - Hanisuhana Hamidon
- Department of Pharmaceutical Technology, Faculty of Pharmacy, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Pahang, Malaysia
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Ahn HY, Choe DJ, Cho YS. Antioxidant Activity and Chemical Characteristics of Orostachys malacophyllus and Fermented Orostachys malacophyllus. ACTA ACUST UNITED AC 2015. [DOI: 10.5352/jls.2015.25.5.577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ko SC, Jeon YJ. Anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue in lipopolysaccharide-stimulated RAW 264.7 macrophages and in vivo zebrafish model. Nutr Res Pract 2015; 9:219-26. [PMID: 26060532 PMCID: PMC4460052 DOI: 10.4162/nrp.2015.9.3.219] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 10/11/2014] [Accepted: 10/17/2014] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND/OBJECTIVES In this study, potential anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue was assessed via nitric oxide (NO) production in lipopolysaccahride (LPS) induced RAW 264.7 macrophages and in vivo zebrafish model. MATERIALS/METHODS We investigated the ability of enzymatic hydrolysates from Styela clava flesh tissue to inhibit LPS-induced expression of pro-inflammatory mediators in RAW 264.7 macrophages, and the molecular mechanism through which this inhibition occurred. In addition, we evaluated anti-inflammatory effect of enzymatic hydrolysates against a LPS-exposed in in vivo zebrafish model. RESULTS Among the enzymatic hydrolysates, Protamex-proteolytic hydrolysate exhibited the highest NO inhibitory effect and was fractionated into three ranges of molecular weight by using ultrafiltration (UF) membranes (MWCO 5 kDa and 10 kDa). The above 10 kDa fraction down-regulated LPS-induced expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), thereby reducing production of NO and prostaglandin E2 (PGE2) in LPS-activated RAW 264.7 macrophages. The above 10 kDa fraction suppressed LPS-induced production of pro-inflammatory cytokines, including interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α. In addition, the above 10 kDa fraction inhibited LPS-induced phosphorylation of extracellular signal-regulated kinases (ERKs), c-Jun N-terminal kinase (JNK), and p38. Furthermore, NO production in live zebrafish induced by LPS was reduced by addition of the above 10 kDa fraction from S. clava enzymatic hydrolysate. CONCLUSION The results of this study suggested that hydrolysates derived from S. clava flesh tissue would be new anti-inflammation materials in functional resources.
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Affiliation(s)
- Seok-Chun Ko
- Institute of Marine Biotechnology, Pukyong National University, Busan 608-737, Korea
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, 102 Jejudaehak-ro, Jeju-si, Jeju 690-756, Korea
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Park JW, Kwon OK, Kim JH, Oh SR, Kim JH, Paik JH, Marwoto B, Widjhati R, Juniarti F, Irawan D, Ahn KS. Rhododendron album Blume inhibits iNOS and COX-2 expression in LPS-stimulated RAW264.7 cells through the downregulation of NF-κB signaling. Int J Mol Med 2015; 35:987-94. [PMID: 25784296 DOI: 10.3892/ijmm.2015.2107] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 02/02/2015] [Indexed: 11/05/2022] Open
Abstract
Rhododendron album Blume (RA) has traditionally been used as an herbal medicine and is considered to have anti-inflammatory properties. In the present study, we screened RA extracts with anti-inflammatory properties. The biological effects of an RA methanol extract (RAME) on inflammation were investigated in lipopolysaccharide (LPS)-stimulated mouse RAW264.7 cells. We investigated the effects of RAME on the production of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-stimulated RAW264.7 cells. To explore the anti-inflammatory mechanisms of RAME, we measured the mRNA and protein expression of pro-inflammatory mediators induced by RAME in the LPS-stimulated RAW264.7 cells by RT-PCR and western blot analysis, respectively. RAME significantly inhibited the production of NO, PGE2, interleukin (IL)-6, IL-1β and tumor necrosis factor (TNF)-α in the LPS-stimulated RAW264.7 cells. It also suppressed the mRNA and protein expression of inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2) and mitogen-activated protein kinases (MAPKs) with a concomitant decrease in the nuclear translocation of nuclear factor-κB (NF-κB) in the LPS-stimulated RAW264.7 cells. These results indicate that RAME inhibits LPS-induced inflammatory responses. These effects were considered to be strongly associated with the suppression of NF-κB activation. We therefore suggest that RAME may be prove to be an effective therapeutic agent for the treatment of inflammatory diseases.
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Affiliation(s)
- Ji-Won Park
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
| | - Ok-Kyoung Kwon
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
| | - Jung-Hee Kim
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
| | - Jae-Hong Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Jin-Hyub Paik
- International Biological Material Research Center, Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - Bambang Marwoto
- Center of Pharmaceutical and Medical Technology, The Agency for the Assessment and Application of Technology (BPPT), Kawasan Puspiptek Serpong, Tangerang, Banten 15314, Indonesia
| | - Rifatul Widjhati
- Center of Pharmaceutical and Medical Technology, The Agency for the Assessment and Application of Technology (BPPT), Kawasan Puspiptek Serpong, Tangerang, Banten 15314, Indonesia
| | - Fifit Juniarti
- Center of Pharmaceutical and Medical Technology, The Agency for the Assessment and Application of Technology (BPPT), Kawasan Puspiptek Serpong, Tangerang, Banten 15314, Indonesia
| | - Doddy Irawan
- Center of Pharmaceutical and Medical Technology, The Agency for the Assessment and Application of Technology (BPPT), Kawasan Puspiptek Serpong, Tangerang, Banten 15314, Indonesia
| | - Kyung-Seop Ahn
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
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Orostachys japonicus Inhibits Expression of the TLR4, NOD2, iNOS, and COX-2 Genes in LPS-Stimulated Human PMA-Differentiated THP-1 Cells by Inhibiting NF-κB and MAPK Activation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:682019. [PMID: 25810745 PMCID: PMC4355124 DOI: 10.1155/2015/682019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/20/2015] [Accepted: 01/26/2015] [Indexed: 11/17/2022]
Abstract
Orostachys japonicus is traditionally used as an inflammatory agent. In this report, we investigated the effects of O. japonicus extract on the expression of genes encoding pathogen-recognition receptors (TLR2, TLR4, NOD1, and NOD2) and proinflammatory factors (iNOS, COX-2, and cytokines) in LPS-stimulated PMA-differentiated THP-1 cells and the NF-κB and MAPK pathways. O. japonicus induced toxicity at high concentrations but had no effect at concentrations lower than 25 μg/mL. O. japonicus inhibited LPS-induced TLR4 and NOD2 mRNA levels, suppressed LPS-induced iNOS and COX-2 transcription and translocation, and downregulated LPS-induced proinflammatory cytokine (IL-1β, IL-6, IL-8, and TNF-α) mRNA levels. In addition, O. japonicus inhibited LPS-induced NF-κB activation and IκBα degradation and suppressed LPS-induced JNK, p38 MAPK, and ERK phosphorylation. Overall, our results demonstrate that the anti-inflammatory effects of O. japonicus are mediated by suppression of NF-κB and MAPK signaling, resulting in reduced TLR4, NOD2, iNOS, and COX-2 expression and inhibition of inflammatory cytokine expression.
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Lee HS, Lee GS, Kim SH, Kim HK, Suk DH, Lee DS. Anti-oxidizing effect of the dichloromethane and hexane fractions from Orostachys japonicus in LPS-stimulated RAW 264.7 cells via upregulation of Nrf2 expression and activation of MAPK signaling pathway. BMB Rep 2014; 47:98-103. [PMID: 24219867 PMCID: PMC4163900 DOI: 10.5483/bmbrep.2014.47.2.088] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 05/14/2013] [Accepted: 06/13/2013] [Indexed: 11/20/2022] Open
Abstract
Orostachys japonicus shows various biological activities. However, the molecular mechanisms remain unknown in LPS-stimulated macrophages. Here, we investigated the anti-oxidizing effect of the dichloromethane (DCM) and hexane fractions from O. japonicus (OJD and OJH) against oxidative stress in RAW 264.7 cells stimulated by LPS. OJD and OJH significantly increased the expression of heme oxygenase-1 (HO-1) in a dose- and time-dependent manner. Additionally, it was found that the expression of HO-1 was stimulated by Nrf2 activated via degradation of Keap1. ERK and p38 inhibitors repressed HO-1 induced by OJD and OJH in LPS-stimulated cells, respectively. In conclusion, these results suggest that OJD and OJH may block oxidative damage stimulated by LPS, via increasing the expression of HO-1 and Nrf2, and MAPK signaling pathway.
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Affiliation(s)
- Hyeong-Seon Lee
- Departments of Smart Foods and Drugs, Inje University, Gimhae 621-749, Korea; Biomedical Laboratory Science, Inje University, Gimhae 621-749, Korea
| | - Gyeong-Seon Lee
- Departments of Smart Foods and Drugs, Inje University, Gimhae 621-749, Korea; Biomedical Laboratory Science, Inje University, Gimhae 621-749, Korea
| | - Seon-Hee Kim
- Departments of Smart Foods and Drugs, Inje University, Gimhae 621-749, Korea; Biomedical Laboratory Science, Inje University, Gimhae 621-749, Korea
| | - Hyun-Kyung Kim
- Department of Biomedical Laboratory Science, College of Natural Science, Gimcheon University, Gimcheon 740-704, Korea
| | - Dong-Hee Suk
- Departments of Smart Foods and Drugs, Inje University, Gimhae 621-749, Korea; Biomedical Laboratory Science, Inje University, Gimhae 621-749, Korea; Department of Laboratory Medicine, Inje University Busan Paik Hospital, Busan 614-735, Korea
| | - Dong-Seok Lee
- Departments of Smart Foods and Drugs, Inje University, Gimhae 621-749, Korea; Biomedical Laboratory Science, Inje University, Gimhae 621-749, Korea
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Kim SH, Ryu DS, Lee HS, Shin HR, Kwon JH, Lee DS. Acute oral toxicity of the ethyl acetate fraction of Orostachys japonicus in mice. PHARMACEUTICAL BIOLOGY 2014; 52:1345-1350. [PMID: 25026339 DOI: 10.3109/13880209.2014.892142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
CONTEXT Orostachys japonicus (Crassulaceae) is referred to as Wa-song in Korea. It is used as an anti-inflammatory, antifebrile, hemostatic, and anti cancer agent, and as an antidote. OBJECTIVE The purpose of this study was to evaluate the acute toxicity of the ethyl acetate fraction of O. japonicus (OJE) after the oral administration in Balb/c mice of both sexes. MATERIALS AND METHODS Mice were oral administered a single doses of 500, 1000, and 2000 mg/kg of body weight and were monitored for 14 d. Biochemical parameters [aspartate amino transferase (AST), alanine amino transferase (ALT), alkaline phosphatase (ALP), total protein (TP), globulin (GB), total cholesterol (TC), triglyceride (TG), blood urea nitrogen (BUN), and creatinine (CR)] and histopathological examination of liver were performed. RESULTS AND CONCLUSION No animals died and no toxic changes were observed in clinical signs, body weight, and organ weight. The LD50 of orally administered OJE was higher than 2000 mg/kg/d in both sexes. No toxicological findings were found in biochemical parameters. In histophathological examination, neutrophilic infiltration was observed at a dose of 2000 mg/kg group in both sexes. These finding suggest that oral administration of OJE does not produce acute toxicity. Therefore, these results could provide satisfactory preclinical evidence of safety to launch clinical trials on standardized formulation of OJE to be a biohealth product.
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Chun JM, Nho KJ, Kim HS, Lee AY, Moon BC, Kim HK. An ethyl acetate fraction derived from Houttuynia cordata extract inhibits the production of inflammatory markers by suppressing NF-кB and MAPK activation in lipopolysaccharide-stimulated RAW 264.7 macrophages. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:234. [PMID: 25012519 PMCID: PMC4099023 DOI: 10.1186/1472-6882-14-234] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 06/30/2014] [Indexed: 12/29/2022]
Abstract
Background Houttuynia cordata Thunb. (Saururaceae) has been used in traditional medicine for treatment of inflammatory diseases. This study evaluated the anti-inflammatory effects of an ethyl acetate fraction derived from a Houttuynia cordata extract (HCE-EA) on the production of inflammatory mediators and the activation of nuclear factor-κB (NF-κB) and mitogen-activated protein kinases (MAPKs) in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Methods To measure the effects of HCE-EA on pro-inflammatory cytokine and inflammatory mediator’s expression in RAW 264.7 cells, we used the following methods: cell viability assay, Griess reagent assay, enzyme-linked immunosorbent assay, real-time polymerase chain reaction and western blotting analysis. Results HCE-EA downregulated nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin (IL-6) production in the cells, as well as inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression. Furthermore, HCE-EA suppressed nuclear translocation of the NF-κB p65 subunit, which correlated with an inhibitory effect on IκBα (nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha) phosphorylation. HCE-EA also attenuated the activation of MAPKs (p38 and JNK). Conclusions Our results suggest that the anti-inflammatory properties of HCE-EA may stem from the inhibition of pro-inflammatory mediators via suppression of NF-κB and MAPK signaling pathways.
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Kim S, Lee MS, Lee B, Gwon WG, Joung EJ, Yoon NY, Kim HR. Anti-inflammatory effects of sargachromenol-rich ethanolic extract of Myagropsis myagroides on lipopolysaccharide-stimulated BV-2 cells. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:231. [PMID: 25005778 PMCID: PMC4227293 DOI: 10.1186/1472-6882-14-231] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 07/01/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Excessive pro-inflammatory cytokine production from activated microglia contributes to neurodegenerative diseases, thus, microglial inactivation may delay the progress of neurodegeneration by attenuating the neuroinflammation. Among 5 selected brown algae, we found the highest antioxidant and anti-neuroinflammatory activities from Myagropsis myagroides ethanolic extract (MME) in lipopolysaccharide (LPS)-stimulated BV-2 cells. METHODS The levels of nitric oxide (NO), prostaglandin E2 (PGE2), and pro-inflammatory cytokines were measured by Griess assay and enzyme linked immunesorbent assay. The levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), mitogen-activated protein kinases (MAPKs), and Akt were measured using Western blot. Nuclear translocation and transcriptional activation of nuclear factor-κB (NF-κB) were determined by immunefluorescence and reporter gene assay, respectively. RESULTS MME inhibited the expression of iNOS and COX-2 at mRNA and protein levels, resulting in reduction of NO and PGE2 production. As a result, pro-inflammatory cytokines were reduced by MME. MME also inhibited the activation and translocation of NF-κB by preventing inhibitor κB-α (IκB-α) degradation. Moreover, MME inhibited the phosphorylation of extracellular signal regulated kinases (ERKs) and c-Jun N-terminal kinases (JNKs). Main anti-inflammatory compound in MME was identified as sargachromenol by NMR spectroscopy. CONCLUSIONS These results indicate that the anti-inflammatory effect of sargachromenol-rich MME on LPS-stimulated microglia is mainly regulated by the inhibition of IκB-α/NF-κB and ERK/JNK pathways.
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Affiliation(s)
- Sunghee Kim
- Department of Food Science and Nutrition, Pukyong National University, Yongso-ro, Nam-gu, Busan 608-737, South Korea
| | - Min-Sup Lee
- Department of Food Science and Nutrition, Pukyong National University, Yongso-ro, Nam-gu, Busan 608-737, South Korea
- Institute of Fisheries Sciences, Pukyong National University, Ilgwang-ro, Ilgwang-myeon, Gijang-gun, Busan 619-911, South Korea
| | - Bonggi Lee
- National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Wi-Gyeong Gwon
- Department of Food Science and Nutrition, Pukyong National University, Yongso-ro, Nam-gu, Busan 608-737, South Korea
| | - Eun-Ji Joung
- Department of Food Science and Nutrition, Pukyong National University, Yongso-ro, Nam-gu, Busan 608-737, South Korea
| | - Na-Young Yoon
- Food and Safety Research Division, National Fisheries Research and Development Institute, 216, Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, South Korea
| | - Hyeung-Rak Kim
- Department of Food Science and Nutrition, Pukyong National University, Yongso-ro, Nam-gu, Busan 608-737, South Korea
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Ryu DS, Kim SH, Kwon JH, Lee DS. Orostachys japonicus induces apoptosis and cell cycle arrest through the mitochondria-dependent apoptotic pathway in AGS human gastric cancer cells. Int J Oncol 2014; 45:459-69. [PMID: 24789703 DOI: 10.3892/ijo.2014.2404] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 04/07/2014] [Indexed: 11/06/2022] Open
Abstract
We investigated the anticancer mechanisms of the ethylacetate (EtOAc) fraction from Orostachys japonicus in human gastric cancer (AGS) cells. Flow cytometric analysis revealed that the number of total apoptotic cells following treatment with the EtOAc fraction increased in a dose-dependent manner. In the cell cycle analyses, the EtOAc fraction increased the peak in the sub-G1, indicating apoptosis, and in the G₂/M phases in a dose-dependent manner. In the RT-PCR analysis, the expression of cyclin-dependent kinase 1 (CDK 1) and cyclin B1 decreased in a dose- and time-dependent manner. The results of western blotting revealed that the protein levels of p53, cytochrome c, and cleaved caspase-3, -8 and -9 proteins increased and those of B cell lymphoma-2 (bcl-2) and pro-caspase-3, -8 and -9 proteins decreased in a dose- and time-dependent manner, whereas the levels of bcl-2-associated x protein (bax) remained unchanged. Furthermore, the changes in the levels of pro-caspase-3, -8 and -9 and cleaved caspase-3, -8 and -9 were abolished by the pan-caspase inhibitor Z-VAD-FMK. In addition, phosphorylation of p38 and JNK increased in a time-dependent manner. These results, for the first time, provide an understanding of the potential anticancer activity of the O. japonicus, which functions through the induction of apoptosis and cell cycle arrest.
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Affiliation(s)
- Deok-Seon Ryu
- Department of Biomedical Laboratory Science, Inje University, Gimhae, Gyungnam 621-749, Republic of Korea
| | - Seon-Hee Kim
- Department of Smart Foods and Drugs, Graduate School of Inje University, Gimhae, Gyungnam 621-749, Republic of Korea
| | - Ji-Hae Kwon
- Department of Smart Foods and Drugs, Graduate School of Inje University, Gimhae, Gyungnam 621-749, Republic of Korea
| | - Dong-Seok Lee
- Department of Biomedical Laboratory Science, Inje University, Gimhae, Gyungnam 621-749, Republic of Korea
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KIM MINJEONG, LEE HYEHYEON, JEONG JINWOO, SEO MINJEONG, KANG BYOUNGWON, PARK JEONGUCK, KIM KYOUNGSOOK, CHO YOUNGSU, SEO KWONIL, KIM GIYOUNG, KIM JUNGIN, CHOI YUNGHYUN, JEONG YONGKEE. Anti-inflammatory effects of 5-hydroxy-3,6,7,8,3′,4′-hexamethoxyflavone via NF-κB inactivation in lipopolysaccharide-stimulated RAW 264.7 macrophage. Mol Med Rep 2014; 9:1197-203. [DOI: 10.3892/mmr.2014.1922] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 11/14/2013] [Indexed: 11/06/2022] Open
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Effects of Poly (ADP-ribose) Polymerase Inhibitor 3-Aminobenzamide on Blood–Brain Barrier and Dopaminergic Neurons of Rats with Lipopolysaccharide-Induced Parkinson’s Disease. J Mol Neurosci 2013; 53:1-9. [DOI: 10.1007/s12031-013-0175-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 11/05/2013] [Indexed: 01/09/2023]
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Yuan F, Chen J, Sun PP, Guan S, Xu J. Wedelolactone inhibits LPS-induced pro-inflammation via NF-kappaB pathway in RAW 264.7 cells. J Biomed Sci 2013; 20:84. [PMID: 24176090 PMCID: PMC4174895 DOI: 10.1186/1423-0127-20-84] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 10/23/2013] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Wedelolactone (WEL), a major coumestan ingredient in Wedelia chinensis, has been used to treat septic shock, hepatitis and venom poisoning in traditional Chinese medicines. The objective of the study was to elucidate the anti-inflammatory effects and mechanism of WEL with a cellular model of lipopolysaccharide (LPS)-induced RAW 264.7 cells. RESULTS To study the role of WEL in pro-inflammation, we measured key inflammation mediators and end products including nitric oxide (NO), prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) and tumor necrosis factor-α (TNF-α) by using the Griess method, enzyme linked immunosorbent assay (ELISA) and Western blotting. Nuclear factor-kappaB (NF-κB) transcription activity was detected by luciferase reporter assay. The important pro-inflammatory transcription factors, NF-κB p65 and inhibitory kappaB alpha (IκB-α); and mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 MAPK (p38) were analyzed by Western blotting. Our study showed that WEL (0.1, 1, 10 μM) significantly inhibited the protein expression levels of iNOS and COX-2 in LPS-stimulated cells, as well as the downstream products, including NO, PGE2 and TNF-α. Moreover, WEL also inhibited LPS-induced NF-κB p65 activation via the degradation and phosphorylation of IκB-α and subsequent translocation of the NF-κB p65 subunit to the nucleus. CONCLUSIONS Our results revealed that WEL has a potential to be a novel anti-inflammatory agent targeting on the NF-κB signaling pathway.
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Affiliation(s)
| | | | | | | | - Jing Xu
- Department of Pharmacy, the Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China.
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Han Y, Jung HW, Lee DH, Kwon SY, Son KH, Park YK. Anti-inflammatory effects of prosapogenin III from the dried roots of Liriope platyphylla in LPS-stimulated RAW264.7 cells. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2013; 15:1038-1049. [PMID: 23944983 DOI: 10.1080/10286020.2013.825253] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Liriope platyphylla has been reported to possess various biological activities, including anti-asthma, anti-inflammation, anti-diabetes, and neuriotogenic properties. In this study, we evaluated the effects of prosapogenin III isolated from the roots of L. platyphylla (Liriopis Tuber) on inflammatory responses in lipopolysaccharide (LPS) stimulated RAW264.7 mouse macrophages. We investigated LPS-induced production/expression of inflammatory mediators such as nitric oxide (NO), inducible nitric oxide synthase (iNOS), cyclooxigenase-2 (COX-2), and proinflammatory cytokines, including interleukin-1β (IL-1β) and interleukin (IL)-6 in RAW264.7 cells. We also performed Western blot analysis for determination of the phosphorylation of mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase (ERK) 1/2, p38, and c-Jun N-terminal kinase (JNK), and nuclear translocation of nuclear factor-κB (NF-κB) in LPS-stimulated cells. Treatment with prosapogenin III resulted in significant inhibition of NO production in LPS-stimulated Raw264.7 cells through suppression of iNOS expression. Treatment with prosapogenin III resulted in a significant decrease in expressions of COX-2, IL-1β, and IL-6 through down-regulation of their mRNA or protein in LPS-stimulated cells. In addition, treatment with prosapogenin III resulted in potently inhibited phosphorylation of three MAPKs, including ERK1/2, p38, and JNK in LPS-stimulated cells. Treatment with prosapogenin III also resulted in suppression of the nuclear translocation of NF-κB in LPS-stimulated cells. These results indicate that prosapogenin III of Liriopis Tuber has anti-inflammatory effects in activated macrophages through inhibition of production of inflammatory mediators by blockade of the MAPK/NF-κB pathway.
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Affiliation(s)
- Yunkyung Han
- a Oriental Medicine R&D Center , Dongguk University , Gyeongju , 780-714 , Republic of Korea
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Lee HS, Bilehal D, Lee GS, Ryu DS, Kim HK, Suk DH, Lee DS. Anti-inflammatory effect of the hexane fraction from Orostachys japonicus in RAW 264.7 cells by suppression of NF-κB and PI3K-Akt signaling. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Park HH, Kim MJ, Li Y, Park YN, Lee J, Lee YJ, Kim SG, Park HJ, Son JK, Chang HW, Lee E. Britanin suppresses LPS-induced nitric oxide, PGE2 and cytokine production via NF-κB and MAPK inactivation in RAW 264.7 cells. Int Immunopharmacol 2012; 15:296-302. [PMID: 23270759 DOI: 10.1016/j.intimp.2012.12.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 11/13/2012] [Accepted: 12/03/2012] [Indexed: 01/25/2023]
Abstract
Little is known about the biological properties of britanin, which is isolated from the flowers of Inula japonica (Inulae Flos). Based on our previous studies that Inulae Flos had anti-inflammation and anti-asthmatic activities, we tried to find the bioactive compounds from it. In this study, the anti-inflammatory effects of britanin on the inflammatory mediators as well as on nuclear factor (NF)-кB and mitogen-activated protein (MAP) kinase activation were evaluated in RAW 264.7 cells. Britanin inhibited the production of nitric oxide (NO) and prostaglandin E2 (PGE2) along with the expression of inducible NO synthase (iNOS) and cyclooxygenase (COX)-2 in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. In addition, britanin reduced the release of pro-inflammatory cytokines, such as TNF-α, IL-1β, and IL-6. Furthermore, the phosphorylations of MAP kinases (p38 and JNK) in LPS-stimulated RAW 264.7 cells were suppressed by britanin. Moreover, britanin inhibited the NF-κB activation induced by LPS, which was associated with the abrogation of IκBα degradation and subsequent decreases in nuclear p65 levels. This study suggests that the anti-inflammatory activities of britanin might be attributed to the inhibition of iNOS and COX-2 and cytokine expression at least in part, through the attenuation of the phosphorylations of MAP kinases and NF-κB activation via IκBα degradation in macrophages. We conclude that britanin may have potential for the treatment of inflammatory diseases through the down-regulation of MAP kinases and NF-κB mediated activation of macrophages.
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Affiliation(s)
- Hyo-Hyun Park
- Research and Development Division, Korean Promotion Institute for Traditional Medicine Industry, Gyeongsan 712-210, South Korea
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Kim KN, Ko YJ, Kang MC, Yang HM, Roh SW, Oda T, Jeon YJ, Jung WK, Heo SJ, Yoon WJ, Kim D. Anti-inflammatory effects of trans-1,3-diphenyl-2,3-epoxypropane-1-one mediated by suppression of inflammatory mediators in LPS-stimulated RAW 264.7 macrophages. Food Chem Toxicol 2012; 53:371-5. [PMID: 23266270 DOI: 10.1016/j.fct.2012.12.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 12/12/2012] [Accepted: 12/14/2012] [Indexed: 10/27/2022]
Abstract
To assess the potential therapeutic properties of trans-1,3-diphenyl-2,3-epoxypropane-1-one (DPEP), its anti-inflammatory effects were investigated in lipopolysaccharide (LPS)-stimulated mouse macrophage (RAW 264.7) cells. DPEP induced dose-dependent reduction of the protein levels of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) and concomitant reduction in the production of NO and prostaglandin E(2) (PGE(2)). Additionally, DPEP suppressed the production of inflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6. We investigated the mechanism by which DPEP inhibits NO and PGE(2) by examining the level of nuclear factor-κB (NF-κB) activation within the mitogen-activated protein kinase (MAPK) pathway, which is an inflammation-induced signaling pathway in RAW 264.7 cells. DPEP inhibited LPS-induced phosphorylation of ERK, JNK, and p38. Furthermore, DPEP inhibited the LPS-induced phosphorylation of inhibitor κB (IκB)-α and NF-κB p50. Taken together, the results of this study demonstrate that DPEP inhibits LPS-stimulated inflammation by blocking the NF-κB and MAPK pathways in macrophages.
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Affiliation(s)
- Kil-Nam Kim
- Marine Bio Research Team, Korea Basic Science Institute (KBSI), Jeju 690-140, Republic of Korea
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