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Bai B, Liu Q, Kong R, Jia Z, Chen H, Zhi W, Wang B, Ma C, Ma D. Role of Nrf2/HO-1 pathway on inhibiting activation of ChTLR15/ChNLRP3 inflammatory pathway stimulated by E. tenella sporozoites. Poult Sci 2024; 103:103445. [PMID: 38262340 PMCID: PMC10835464 DOI: 10.1016/j.psj.2024.103445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/25/2024] Open
Abstract
The aim of this study is to explore whether Nrf2 antioxidant pathway negatively regulates the ChTLR15/NLRP3 inflammatory pathway stimulated by Eimeria tenella infection. Firstly, levels of molecules in the Nrf2/HO-1 pathway in DF-1 cells pre-treated with an optimized dose of Corilagine or probiotics Levilactobacillus brevis 23017 were quantified using real-time PCR (qRT-PCR) and Western blot. Then, DF-1 cells pre-treated with Corilagine or L. brevis 23017 were stimulated with E. tenella sporozoites, and mRNA levels of molecules in Nrf2/HO-1 and ChTLR15/NLRP3 pathways, protein levels of p-Nrf2, Nrf2, HO-1, ChTLR15 and ChNLRP3, levels of malondialdehyde (MDA) and reactive oxygen species (ROS) were quantified. Further, expression level of Nrf2 and ChTLR15 in DF-1 cells was knocked down by RNA interfering (RNAi) method, and target cells were pre-treated with Corilagine or L. brevis 23017, followed by stimulation with E. tenella sporozoites, and the expression levels of key molecules in Nrf2/HO-1 and ChTLR15/NLRP3 pathways were quantified. The results showed that mRNA and protein levels of key molecules in the Nrf2/HO-1 pathway in DF-1 cells was significantly upregulated after pretreating with 15 μM Corilagine and supernatant of L. brevis 23017. After stimulating with E. tenella sporozoites, levels of molecules in the ChTLR15/NLRP3 pathway, levels of MDA and ROS in DF-1 cells pre-treated with 15 μM Corilagine or bacterial supernatant were all significantly down-regulated. The results from the knock-down experiment also displayed that Corrigine and L. brevis 23017 inhibited the activation of the ChTLR15/ChNLRP3 inflammatory pathway stimulated by E. tenella sporozoites through activating Nrf2/HO-1 antioxidant pathway. This study provides new ideas for the development of novel anticoccidial products.
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Affiliation(s)
- Bingrong Bai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Qiuju Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Rui Kong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Zhipeng Jia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Hang Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wenjing Zhi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Biao Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Chunli Ma
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China; Heilongjiang Provincial Key Laboratory of Pathogenic Mechanism for Animal Disease and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.
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Tao L, Tian Y, Liao D, An S, Chen W, Liu X, Xu P, Shen X, Zhou Y. Determination of Polycyclic Aromatic Hydrocarbons (PAHs) and Phthalates in Human Placenta by Mixed Hexane/Ether Extraction and Gas Chromatography-Mass Spectrometry/Mass Spectrometry (GC-MS/MS). Metabolites 2023; 13:978. [PMID: 37755258 PMCID: PMC10536546 DOI: 10.3390/metabo13090978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 09/28/2023] Open
Abstract
In this study, we evaluated the extraction effect of three different extractants, namely hexane + ether (v/v = 3:1), acetonitrile and ethyl acetate, on polycyclic aromatic hydrocarbons (PAHs) and phthalic acid esters (PAEs) in placenta detected and analysed by triple quadrupole gas chromatography-mass spectrometry (GC-MS/MS). The results showed that n-hexane + ether (v/v = 3:1) had the highest extraction efficiency. Under the optimal conditions, the limits of detection (LOD) for the 10 PAHs were 0.003-0.0167 μg/L with relative standard deviations (RSD) of 1.4-5.48% and detection rates of 68.19-107.05%, and the correlation coefficients were (R2, 0.9982-0.9999). The LODs for the nine PAEs were 0.0015-3.5714 μg/L and the correlation coefficients were (R2, 0.9982-0.9999). The limits of detection (S/N = 3) for the nine PAHs were 0.0015-0.5714 μg/L with relative standard deviations (RSD) of 3.15-8.37%, and the detection rates were 80.45-112.59% with correlations of (R2, 0.9972-0.9998). The method was applied to the analysis of PAHs and phthalates in placenta samples from pregnant women. The method's accuracy and applicability were demonstrated. In comparison with other methods for the detection of PAEs and PAHs, the method proposed in this paper has a wider linear range, lower minimum detection limit and comparable recovery with good correlation. This paper is dedicated to providing another method for improving the performance of extracting solid tissues.
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Affiliation(s)
- Lin Tao
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Yingkuan Tian
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Dengqing Liao
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Songlin An
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Wei Chen
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Xiang Liu
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Pei Xu
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Xubo Shen
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
| | - Yuanzhong Zhou
- Key Laboratory, School of Public Health, Zunyi Medical University, No.6 Xuefu West Road, Xinpu Street, Honghuagang District, Zunyi 563006, China
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Dai Y, Xu X, Huo X, Faas MM. Effects of polycyclic aromatic hydrocarbons (PAHs) on pregnancy, placenta, and placental trophoblasts. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115314. [PMID: 37536008 DOI: 10.1016/j.ecoenv.2023.115314] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/05/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a group of persistent organic pollutants that are carcinogenic, mutagenic, endocrine-toxic, and immunotoxic. PAHs can be found in maternal and fetal blood and in the placenta during pregnancy. They may thus affect placental and fetal development. Therefore, the exposure levels and toxic effects of PAHs in the placenta deserve further study and discussion. This review aims to summarize current knowledge on the effects of PAHs and their metabolites on pregnancy and birth outcomes and on placental trophoblast cells. A growing number of epidemiological studies detected PAH-DNA adducts as well as the 16 high-priority PAHs in the human placenta and showed that placental PAH exposure is associated with adverse fetal outcomes. Trophoblasts are important cells in the placenta and are involved in placental development and function. In vitro studies have shown that exposure to either PAH mixtures, benzo(a)pyrene (BaP) or BaP metabolite benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE) affected trophoblast cell viability, differentiation, migration, and invasion through various signaling pathways. Furthermore, similar effects of BPDE on trophoblast cells could also be observed in BaP-treated mouse models and were related to miscarriage. Although the current data show that PAHs may affect placental trophoblast cells and pregnancy outcomes, further studies (population studies, in vitro studies, and animal studies) are necessary to show the specific effects of different PAHs on placental trophoblasts and pregnancy outcomes.
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Affiliation(s)
- Yifeng Dai
- Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands; Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China.
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China; Department of Cell Biology and Genetics, Shantou University Medical College, 22 Xinling Rd, Shantou 515041, Guangdong, China
| | - Xia Huo
- Laboratory of Environmental Medicine and Developmental Toxicology, Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
| | - Marijke M Faas
- Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands; Department of Obstetrics and Gynecology, University Medical Center Groningen and University of Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
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Li J, Bai J, Si X, Jia H, Wu Z. Benzo[a]pyrene induces epithelial tight junction disruption and apoptosis via inhibiting the initiation of autophagy in intestinal porcine epithelial cells. Chem Biol Interact 2023; 374:110386. [PMID: 36754226 DOI: 10.1016/j.cbi.2023.110386] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/29/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
Ingestion of food contaminated with benzo[a]pyrene (B[a]P) poses health risks to animals and humans. However, the toxicity of B[a]P exposure on the intestinal barrier function and underlying mechanisms remain obscure. In the present study, intestinal porcine epithelial cells (IPEC-1) were challenged with different doses of B[a]P and its deleterious effects were determined. We found that B[a]P exposure led to impaired intestinal tight junction function as evidenced by reduced transepithelial electric resistance, increased permeability, and downregulated intestinal tight junction protein levels. Further study demonstrated that B[a]P treatment induced cell cycle arrest, and resulted in oxidative damage-related apoptosis in IPEC-1 cells. Intriguingly, we observed an inhibition of autophagy and an activation of unfolded protein response (UPR) in B[a]P-challenged cells, when compared with controls. To investigate the role of autophagy on B[a]P-induced epithelial tight junction disruption and apoptosis, cells were cotreated with B[a]P and rapamycin, and rapamycin dramatically improved intestinal tight junction and reduced apoptosis, indicating a protective effect of autophagy for the cells in response to B[a]P treatment. We also explored the role of UPR in B[a]P-induced cellular damage by using 4-phenylbutyric acid, an antagonist of UPR. Interestingly, B[a]P-induced apoptosis and dysfunction of the intestinal tight junction were exacerbated by 4-phenylbutyric acid, and the 4-phenylbutyric acid didn't ameliorate the inhibitory effects of B[a]P on microtubule-associated protein 1 light chain 3 (LC3-II) and lysosomal-associated membrane protein 2 (LAMP2) in IPEC-1 cells. These novel findings provided herein indicated that B[a]P induces intestinal epithelial tight junction disruption and apoptotic cell death via inhibiting autophagy in IPEC-1 cells.
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Affiliation(s)
- Jun Li
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Jun Bai
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Xuemeng Si
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Hai Jia
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Zhenlong Wu
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China.
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Guarnieri G, Becatti M, Squecco R, Comeglio P, Garella R, Tamburrino L, Marchiani S, Vignozzi L, Vannelli GB, Maggi M, Morelli A. Effects of benzo[a]pyrene on the reproductive axis: Impairment of kisspeptin signaling in human gonadotropin-releasing hormone primary neurons. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120766. [PMID: 36460192 DOI: 10.1016/j.envpol.2022.120766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/20/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
The neuroendocrine control of reproduction is strictly coordinated at the central level by the pulsatile release of gonadotropin-releasing hormone (GnRH) by the hypothalamic GnRH neurons. Alterations of the GnRH-network, especially during development, lead to long-term reproductive and systemic consequences, also causing infertility. Recent evidence shows that benzo[a]pyrene (BaP), a diffuse pollutant that can play a role as an endocrine disruptor, affects gonadal function and gamete maturation, whereas data demonstrating its impact at hypothalamic level are very scarce. This study investigated the effects of BaP (10 μM) in a primary cell culture isolated from the human fetal hypothalamus (hfHypo) and exhibiting a clear GnRH neuron phenotype. BaP significantly decreased gene and protein expression of both GnRH and kisspeptin receptor (KISS1R), the master regulator of GnRH neuron function. Moreover, BaP exposure increased phospho-ERK1/2 signaling, a well-known mechanism associated with KISS1R activation. Interestingly, BaP altered the electrophysiological membrane properties leading to a significant depolarizing effect and it also significantly increased GnRH release, with both effects being not affected by kisspeptin addition. In conclusion, our findings demonstrate that BaP may alter GnRH neuron phenotype and function, mainly interfering with KISS1R signaling and GnRH secretion and therefore with crucial mechanisms implicated in the central neuroendocrine control of reproduction.
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Affiliation(s)
- Giulia Guarnieri
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Matteo Becatti
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Roberta Squecco
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Paolo Comeglio
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Rachele Garella
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Lara Tamburrino
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Sara Marchiani
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Linda Vignozzi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy; I.N.B.B. (Istituto Nazionale Biostrutture e Biosistemi), Rome, Italy
| | | | - Mario Maggi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy; I.N.B.B. (Istituto Nazionale Biostrutture e Biosistemi), Rome, Italy
| | - Annamaria Morelli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.
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Jiao Y, Wang S, Jiang L, Sun X, Li J, Liu X, Yao X, Zhang C, Wang N, Deng H, Yang G. 2-undecanone protects against fine particles-induced heart inflammation via modulating Nrf2/HO-1 and NF-κB pathways. ENVIRONMENTAL TOXICOLOGY 2022; 37:1642-1652. [PMID: 35285579 DOI: 10.1002/tox.23513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/26/2022] [Accepted: 03/06/2022] [Indexed: 05/20/2023]
Abstract
Exposure to air pollution has been closely associated with some cardiovascular disease. One of the mechanisms of PM2.5 -mediated heart injury may be to promote inflammation. We aim to investigate whether the main extract of Houttuynia cordata, 2-undecanone, can prevent the inflammation caused by PM2.5 , and to reveal the underlying mechanisms. The results showed that PM2.5 increased the expression of certain inflammatory cytokines, and caused oxidative damage in BALB/c mice and H9C2 cells. Supplementation with 2-undecanone attenuated this PM2.5 -induced inflammatory injury and oxidative damage. Further, we elucidated that the protective effect of 2-undecanone may be associated with NF-κB and Nrf2/HO-1 pathways. The NF-κB pathway was distinctly activated after treated by PM2.5 , which can be blocked by 2-undecanone, accompanied by increasing Nrf2 and HO-1 levels. To figure out the relationship between NF-κB and Nrf2/HO-1 pathways, we knocked down Nrf2 gene. NF-κB pathway proteins and downstream inflammatory cytokines were significantly increased after treatment with PM2.5 , while 2-undecanone could decrease expression of these proteins. In conclusion, it is possible that 2-undecanone can induce the expression of the antioxidant enzyme HO-1 by activating Nrf2, thereby reducing NF-κB pathway and inflammatory damage of mouse myocardium caused by PM2.5 exposure.
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Affiliation(s)
- Yuhang Jiao
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Shaopeng Wang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Liping Jiang
- Liaoning Anti-degenerative Diseases Natural Products Engineering Technology Research Center, Dalian Medical University, Dalian, China
| | - Xiance Sun
- Liaoning Anti-degenerative Diseases Natural Products Engineering Technology Research Center, Dalian Medical University, Dalian, China
| | - Jing Li
- Department of Pathology, Dalian Medical University, Dalian, China
| | - Xiaofang Liu
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Xiaofeng Yao
- Liaoning Anti-degenerative Diseases Natural Products Engineering Technology Research Center, Dalian Medical University, Dalian, China
| | - Cong Zhang
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Ningning Wang
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Haoyuan Deng
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Guang Yang
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
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Yang X, Pan X, Jia Z, Bai B, Zhi W, Chen H, Ma C, Ma D. Oral administration of Lactobacillus brevis 23017 combined with ellagic acid attenuates intestinal inflammatory injury caused by Eimeria infection by activating the Nrf2/HO-1 antioxidant pathway. Vet Res 2022; 53:21. [PMID: 35303923 PMCID: PMC8931975 DOI: 10.1186/s13567-022-01042-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/08/2022] [Indexed: 02/07/2023] Open
Abstract
The aim of this study was to investigate whether oral administration of Lactobacillus brevis 23017 (LB) alone and in combination with ellagic acid inhibits ChTLR15/ChNLRP3/ChIL-1β by activating the Nrf2/HO-1 pathway to attenuate intestinal inflammatory injury. Two animal experiments were performed. In Experiment 1, chickens were allocated into 7 groups: PBS, and low, medium and high dosages of live and heat-killed LB, named L/LB(+), M/LB(+) and H/LB(+), and L/LB(-), M/LB(-) and H/LB(-), respectively. In Experiment 2, chickens were divided into 5 groups: PBS, challenge control, and low, medium and high dosages of ellagic acid combined with LB(+), named L/EA + L/LB(+), M/EA + M/LB(+) and H/EA + H/LB(+), respectively. Chickens were gavaged with LB with or without ellagic acid once a day. Then, the mRNA and protein levels of the components of the Nrf2/HO-1 pathway found in the caecal tissues were quantified. On Day 7 post-infection with E. tenella, the levels of the components of the ChTLR15/NLRP3/IL-1β pathway in the caeca were again quantified, and the anticoccidial effects were assessed. The results showed that the levels of the genes in the Nrf2/HO-1 pathway in the chickens in the LB(+) groups were higher than those in the LB(-) groups (p < 0.001); those in the H/LB(+) group were higher than those in the M/LB(+) and L/LB(+) groups (p < 0.001); and those in the H/EA + H/LB(+) group showed the highest expression levels compared with the other groups (p < 0.001). After challenge, the chickens in the H/LB(+) group displayed less inflammatory injury than those in the M/LB(+) and L/LB(+) groups (p < 0.05), and the chickens in the H/EA + H/LB(+) group showed stronger anti-inflammatory effects than the other groups (p < 0.05). Thus, these protective effects against infection were consistent with the above results. Overall, significant anti-inflammatory effects were observed in chickens orally gavaged with high dosages of live L. brevis 23017 and ellagic acid, which occurred by regulation of the ChTLR15/NLRP3/IL-1β pathway.
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Affiliation(s)
- Xuelian Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Xinghui Pan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Zhipeng Jia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Bingrong Bai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Wenjing Zhi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Hang Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Chunli Ma
- College of Food Science, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
| | - Dexing Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China. .,Heilongjiang Key Laboratory for Experimental Animals and Comparative Medicine, Harbin, 150030, Heilongjiang, China.
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Tantengco OAG, de Castro Silva M, Shahin H, Bento GFC, Cursino GC, Cayenne S, da Silva MG, Menon R. The role of nuclear factor erythroid 2-related factor 2 (NRF2) in normal and pathological pregnancy: A systematic review. Am J Reprod Immunol 2021; 86:e13496. [PMID: 34467607 DOI: 10.1111/aji.13496] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE A homeostatic balance between reactive oxygen species production and the antioxidant redox system is an important component of normal pregnancy. Nuclear Factor Erythroid 2-Related Factor 2 (Nrf2) preserves cellular homeostasis by enhancing the cell's innate antioxidant status to reduce oxidative stress and inflammatory damage to the cell during pregnancy. Active Nrf2, in the nucleus of the cell, transactivates various antioxidant genes. The objective of this systematic review was to synthesize evidence on the role of Nrf2 in various adverse pregnancy outcomes (APOs). METHODS We conducted a systematic review of the role of Nrf2 in pregnancy. Articles written in English, Portuguese, and Spanish were obtained from three different databases from inception until January 2021. The titles, abstracts and full text were reviewed independently by six reviewers. The quality of the included studies was assessed using a quality assessment tool developed to assess basic science and clinical studies. Nrf2 expression (gene and protein), functional contributions, and association with APOs were assessed. RESULTS A total of 747 citations were identified; 80 were retained for full review. Most studies on Nrf2 have been carried out using placental tissues and placenta-derived cells. Limited studies have been conducted using fetal membranes, uterus, and cervix. Nuclear translocation of Nrf2 results in transactivation of antioxidant enzymes, including glutathione peroxidase, hemeoxygenase-1, and superoxide dismutase in gestational cells during pregnancy. This antioxidant response maintains cellular homeostasis during pregnancy. This promotes trophoblast cell survival and prevents cell death and abnormal angiogenesis in the placenta. Excessive and insufficient Nrf2 response may promote oxidative and reductive stress, respectively. This Nrf2 dysregulation has been associated with APOs including gestational diabetes mellitus, intrauterine growth restriction, reproductive toxicity, preeclampsia, and preterm birth. CONCLUSION Several studies have localized and reported an association between Nrf2's differential expression in reproductive tissues and the pathogenesis of APOs. However, a comprehensive functional understanding of Nrf2 in reproductive tissues is still lacking. Nrf2's activation and functions are complex, and therefore, current in vitro and in vivo studies are limited in their experimental approaches. We have identified key areas for future Nrf2 research that is needed to fill knowledge gaps.
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Affiliation(s)
- Ourlad Alzeus G Tantengco
- Division of Basic & Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, Texas, USA
- Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, Manila, Philippines
| | - Mariana de Castro Silva
- Department of Pathology, Botucatu Medical School, Universidade Estadual Paulista, UNESP, Botucatu, São Paulo, Brazil
| | - Hend Shahin
- Division of Basic & Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Giovana Fernanda Cosi Bento
- Department of Pathology, Botucatu Medical School, Universidade Estadual Paulista, UNESP, Botucatu, São Paulo, Brazil
| | - Geovanna Cristofani Cursino
- Department of Pathology, Botucatu Medical School, Universidade Estadual Paulista, UNESP, Botucatu, São Paulo, Brazil
| | - Samir Cayenne
- The University of Texas at Austin, Austin, Texas, USA
| | - Marcia Guimarães da Silva
- Department of Pathology, Botucatu Medical School, Universidade Estadual Paulista, UNESP, Botucatu, São Paulo, Brazil
| | - Ramkumar Menon
- Division of Basic & Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, Texas, USA
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Lou Y, Guo Z, Zhu Y, Kong M, Zhang R, Lu L, Wu F, Liu Z, Wu J. Houttuynia cordata Thunb. and its bioactive compound 2-undecanone significantly suppress benzo(a)pyrene-induced lung tumorigenesis by activating the Nrf2-HO-1/NQO-1 signaling pathway. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:242. [PMID: 31174565 PMCID: PMC6556055 DOI: 10.1186/s13046-019-1255-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 05/30/2019] [Indexed: 12/21/2022]
Abstract
Background Lung cancer remains the most common cause of cancer-related deaths, with a high incidence and mortality in both sexes worldwide. Chemoprevention has been the most effective strategy for lung cancer prevention. Thus, exploring novel and effective candidate agents with low toxicity for chemoprevention is essential and urgent. Houttuynia cordata Thunb. (Saururaceae) (H. cordata), which is a widely used herbal medicine and is also popularly consumed as a healthy vegetable, exhibits anti-inflammatory, antioxidant and antitumor activity. However, the chemopreventive effect of H. cordata against benzo(a)pyrene (B[a]P)-initiated lung tumorigenesis and the underlying mechanism remain unclear. Methods A B[a]P-stimulated lung adenocarcinoma animal model in A/J mice in vivo and a normal lung cell model (BEAS.2B) in vitro were established to investigate the chemopreventive effects of H. cordata and its bioactive compound 2-undecanone against lung tumorigenesis and to clarify the underlying mechanisms. Results H. cordata and 2-undecanone significantly suppressed B[a]P-induced lung tumorigenesis without causing obvious systemic toxicity in mice in vivo. Moreover, H. cordata and 2-undecanone effectively decreased B[a]P-induced intracellular reactive oxygen species (ROS) overproduction and further notably protected BEAS.2B cells from B[a]P-induced DNA damage and inflammation by significantly inhibiting phosphorylated H2A.X overexpression and interleukin-1β secretion. In addition, H. cordata and 2-undecanone markedly activated the Nrf2 pathway to induce the expression of the antioxidative enzymes heme oxygenase-1 (HO-1) and NAD(P)H: quinone oxidoreductase 1 (NQO-1). Nrf2 silencing by transfection with Nrf2 siRNA markedly decreased the expression of HO-1 and NQO-1 to diminish the reductions in B[a]P-induced ROS overproduction, DNA damage and inflammation mediated by H. cordata and 2-undecanone. Conclusions H. cordata and 2-undecanone could effectively activate the Nrf2-HO-1/NQO-1 signaling pathway to counteract intracellular ROS generation, thereby attenuating DNA damage and inflammation induced by B[a]P stimulation and playing a role in the chemoprevention of B[a]P-induced lung tumorigenesis. These findings provide new insight into the pharmacological action of H. cordata and indicate that H. cordata is a novel candidate agent for the chemoprevention of lung cancer. Electronic supplementary material The online version of this article (10.1186/s13046-019-1255-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yanmei Lou
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Zhenzhen Guo
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Yuanfeng Zhu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Muyan Kong
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Rongrong Zhang
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China
| | - Linlin Lu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, SAR, China
| | - Feichi Wu
- Hunan Zhengqing Pharmaceutical Group Limited, Huaihua, 418005, China
| | - Zhongqiu Liu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China. .,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, SAR, China.
| | - Jinjun Wu
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, Guangdong, China.
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Feng S, Qiu B, Zou L, Liu K, Xu X, Zhu H. Schisandrin B elicits the Keap1-Nrf2 defense system via carbene reactive metabolite which is less harmful to mice liver. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:4033-4046. [PMID: 30568426 PMCID: PMC6267698 DOI: 10.2147/dddt.s176561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background Schisandrin B (Sch B) a main active component of Schisandra chinensis, has been shown to act as a liver protectant via activation of the Nrf2 pathway. Nevertheless, it remains unclear whether its reactive metabolite is responsible for Nrf2 activation; also, the effects of its reactive metabolite on liver function are still unknown. Methods The present study determined and identifed the carbene reactive metabolite of Sch B in human and mice liver microsomes. Its roles in activating Nrf2 pathway and modifying macromolecules were further explored in human liver microsomes. Moreover the potential cytotoxicity and hepatoxicity of carbene on HepG-2 and mice were also investigated. Results In the present study, cytochromes P450 (CYP450s) metabolized Sch B to carbene reactive metabolite, which, with the potential to modify peptides, were identifed and observed in human and mice liver microsomes. Moreover, the relevance of carbene in Nrf2 activation was verifed by co-incubation in the presence of CYP450 inhibitors in HepG-2 cells, as well as by molecular docking study of carbene and Keap1. Additionally, the cytotoxicity of Sch B on HepG-2 cells was signifcantly aggravated by CYP450 inducer (with LD50 decreasing from 63 to 21 µM) and signifcantly alleviated by CYP450 inhibitor and glutathione (with LD50 increasing from 63 µM to 200 µM). Besides, after oral administration of mice with Sch B (25-100 mg/kg) for 21 days, only the highest dose induced mild hepatotoxicity, which was accompanied by increasing the aminotransferase activity and centrilobular hepatocellular infltration of lymphocytes. In addition, upregulation of CYP450 activity; Nrf2, NQO-1, and GST expression; and glutathione level was observed in Sch B treatment groups. Conclusion The present study revealed that CYP450s mediate the conversion of Sch B to carbene, which subsequently binds to Keap1 and elicits Nrf2 pathway, which could further increase the elimination of carbene and thus exhibit a less harmful effect on mice liver.
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Affiliation(s)
- Shan Feng
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
| | - Bingxun Qiu
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
| | - Li Zou
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
| | - Ke Liu
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
| | - Xiaoyu Xu
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
| | - Huifeng Zhu
- College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Beibei, Chongqing 400715, China, ;
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11
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Ding M, Shu P, Gao S, Wang F, Gao Y, Chen Y, Deng W, He G, Hu Z, Li T. Schisandrin B protects human keratinocyte-derived HaCaT cells from tert-butyl hydroperoxide-induced oxidative damage through activating the Nrf2 signaling pathway. Int J Mol Med 2018; 42:3571-3581. [PMID: 30272282 DOI: 10.3892/ijmm.2018.3901] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/06/2018] [Indexed: 11/05/2022] Open
Abstract
Schisandrin B (Sch B), an active extract of Schisandra chinensis, has demonstrated antioxidant activity in a number of in vitro and in vivo models. In the present study, the capacity of Sch B to protect against oxidative injury in keratinocytes using the human keratinocyte‑derived HaCaT cell line was investigated. To induce oxidative injury, tert‑Butyl hydroperoxide (tBHP) was employed. The results indicate that Sch B efficiently reduced tBHP‑induced cell death, reactive oxygen species (ROS) generation, protein oxidation, lipid peroxidation and DNA damage. Sch B also effectively attenuated the loss of mitochondrial membrane potential (MMP), and restored adenosine triphosphate (ATP) levels in tBHP‑injured HaCaT cells. Furthermore, Sch B enhanced the expression of key antioxidant enzymes, including catalase, heme oxygenase‑1, glutathione peroxidase, and superoxide dismutase, and further engaged the nuclear factor‑erythroid 2‑related factor 2 (Nrf2) signaling pathway by modulating its phosphorylation through activating multiple upstream kinases, including protein kinase B, adenosine monophosphate‑activated protein kinase and mitogen‑activated protein kinases (MAPKs). The present study suggests that Sch B provides a protective effect in keratinocytes in response to oxidative injury via reinforcing the endogenous antioxidant defense system. Therefore, it may be applied as an adjuvant therapy or in health foods to delay the skin aging process and the onset of skin diseases caused by oxidative stress.
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Affiliation(s)
- Ming Ding
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan, Shandong 250353, P.R. China
| | - Peng Shu
- Infinitus (China) Company, Ltd., Guangzhou, Guangdong 510663, P.R. China
| | - Shuang Gao
- Institute of Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, P.R. China
| | - Fenglou Wang
- LB Cosmeceutical Technology Co., Ltd., Shanghai 200233, P.R. China
| | - Yitian Gao
- Institute of Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yu Chen
- Institute of Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, P.R. China
| | - Wenjuan Deng
- Infinitus (China) Company, Ltd., Guangzhou, Guangdong 510663, P.R. China
| | - Gaiying He
- LB Cosmeceutical Technology Co., Ltd., Shanghai 200233, P.R. China
| | - Zhenlin Hu
- Institute of Life Science, Wenzhou University, Wenzhou, Zhejiang 325000, P.R. China
| | - Tianduo Li
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology, Jinan, Shandong 250353, P.R. China
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He S, Ou R, Wang W, Ji L, Gao H, Zhu Y, Liu X, Zheng H, Liu Z, Wu P, Lu L. Camptosorus sibiricus rupr aqueous extract prevents lung tumorigenesis via dual effects against ROS and DNA damage. JOURNAL OF ETHNOPHARMACOLOGY 2018; 220:44-56. [PMID: 29258855 DOI: 10.1016/j.jep.2017.12.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Camptosorus sibiricus Rupr (CSR) is a widely used herbal medicine with antivasculitis, antitrauma, and antitumor effects. However, the effect of CSR aqueous extract on B[a]P-initiated tumorigenesis and the underlying mechanism remain unclear. Moreover, the compounds in CSR aqueous extract need to be identified and structurally characterized. AIM OF THE STUDY We aim to investigate the chemopreventive effect of CSR and the underlying molecular mechanism. MATERIALS AND METHODS A B[a]P-stimulated normal cell model (BEAS.2B) and lung adenocarcinoma animal model were established on A/J mice. In B[a]P-treated BEAS.2B cells, the protective effects of CSR aqueous extract on B[a]P-induced DNA damage and ROS production were evaluated through flow cytometry, Western blot, real-time quantitative PCR, single-cell gel electrophoresis, and immunofluorescence. Moreover, a model of B[a]P-initiated lung adenocarcinoma was established on A/J mice to determine the chemopreventive effect of CSR in vivo. The underlying mechanism was analyzed via immunohistochemistry and microscopy. Furthermore, the new compounds in CSR aqueous extract were isolated and structurally characterized using IR, HR-ESI-MS, and 1D and 2D NMR spectroscopy. RESULTS CSR effectively suppressed ROS production by re-activating Nrf2-mediated reductases HO-1 and NQO-1. Simultaneously, CSR attenuated the DNA damage of BEAS.2B cells in the presence of B[a]P. Moreover, CSR at 1.5 and 3 g/kg significantly suppressed tumorigenesis with tumor inhibition ratios of 36.65% and 65.80%, respectively. The tumor volume, tumor size, and multiplicity of B[a]P-induced lung adenocarcinoma were effectively decreased by CSR in vivo. After extracting and identifying the compounds in CSR aqueous extract, three new triterpene saponins were isolated and characterized structurally. CONCLUSIONS CSR aqueous extract prevents lung tumorigenesis by exerting dual effects against ROS and DNA damage, suggesting that CSR is a novel and effective agent for B[a]P-induced carcinogenesis. Moreover, by isolating and structurally characterizing three new triterpene saponins, our study further standardized the quality of CSR aqueous extract, which could widen CSR clinical applications.
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Affiliation(s)
- Shugui He
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Rilan Ou
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Wensheng Wang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Liyan Ji
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Hui Gao
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Yuanfeng Zhu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Xiaomin Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Hongming Zheng
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Zhongqiu Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China; State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Peng Wu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China.
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China; State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China.
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Liu Q, Song J, Li H, Dong L, Dai S. Schizandrin B inhibits the cis‑DDP‑induced apoptosis of HK‑2 cells by activating ERK/NF‑κB signaling to regulate the expression of survivin. Int J Mol Med 2018; 41:2108-2116. [PMID: 29393335 PMCID: PMC5810203 DOI: 10.3892/ijmm.2018.3409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 01/10/2018] [Indexed: 12/15/2022] Open
Abstract
The nephrotoxicity of cisplatin limits its clinical application. Schizandrin B (SchB) has been demonstrated to have a variety of potential cytoprotective activities. The present study explored the molecular mechanisms by which SchB inhibits the dichlorodiammine platinum (DDP)‑induced apoptosis of HK‑2 proximal tubule epithelial cells. In vitro assays demonstrated that SchB increased the viability of HK‑2 cells, alleviated the cis‑DDP‑induced activation of caspase‑3, reduced apoptosis and improved the nuclear morphology of HK‑2 cells. Additionally, the mechanism underlying the cis‑DDP‑induced apoptosis was indicated to involve the activation of p53, c‑Jun‑N‑terminal kinase (JNK) and p38 signaling. Furthermore, SchB was demonstrated to activate extracellular signal‑regulated kinase (ERK) and nuclear factor κB (NF‑κB) signaling, and induce the expression of survivin. The inhibition of ERK and NF‑κB signaling using U0126 and pyrollidine dithiocarbamate, respectively, inhibited the expression of survivin, whereas blocking the expression of survivin using small interfering RNA inhibited the alleviating effect of SchB on cis‑DDP‑induced apoptosis as indicated by a reduction in cleaved caspase‑3 expression. In conclusion, SchB regulates ERK/NF‑κB signaling to induce the expression of survivin, thereby alleviating cis‑DDP‑induced renal injury.
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Affiliation(s)
- Qiang Liu
- Department of Medical Imaging, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi 710004
| | - Jinxin Song
- Department of Ophthalmology, The First Hospital of Xi’an, Xi’an, Shaanxi 710002
| | - Hong Li
- Department of Ophthalmology, The First Hospital of Xi’an, Xi’an, Shaanxi 710002
| | - Lei Dong
- Department of Gastroenterology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi 710004, P.R. China
| | - Shejiao Dai
- Department of Gastroenterology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi 710004, P.R. China
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Kwon DH, Cha HJ, Choi EO, Leem SH, Kim GY, Moon SK, Chang YC, Yun SJ, Hwang HJ, Kim BW, Kim WJ, Choi YH. Schisandrin A suppresses lipopolysaccharide-induced inflammation and oxidative stress in RAW 264.7 macrophages by suppressing the NF-κB, MAPKs and PI3K/Akt pathways and activating Nrf2/HO-1 signaling. Int J Mol Med 2017; 41:264-274. [PMID: 29115385 PMCID: PMC5746320 DOI: 10.3892/ijmm.2017.3209] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 10/19/2017] [Indexed: 12/15/2022] Open
Abstract
Schisandrin A is a bioactive lignan occurring in the fruits of plants of the Schisandra genus that have traditionally been used in Korea for treating various inflammatory diseases. Although the anti-inflammatory and antioxidant effects of lignan analogues similar to schisandrin A have been reported, the underlying molecular mechanisms have remained elusive. In the present study, schisandrin A significantly suppressed the lipopolysaccharide (LPS)-induced production of the key pro-inflammatory mediators nitric oxide (NO) and prostaglandin E2 by suppressing the expression of inducible NO synthase and cyclooxygenase-2 at the mRNA and protein levels in RAW 264.7 macrophages. Furthermore, schisandrin A was demonstrated to reduce the LPS-induced secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-1β; this was accompanied by a simultaneous decrease in the respective mRNA and protein levels in the macrophages. In addition, the LPS- induced translocation of nuclear factor-κB (NF-κB), as well as activation of mitogen-activated protein kinases (MAPKs) and phosphatidylinositol‑3 kinase (PI3K)/Akt pathways were inhibited by schisandrin A. Furthermore, schisandrin A significantly diminished the LPS-stimulated accumulation of intracellular reactive oxygen species, and effectively enhanced the expression of NF erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1). These results suggested that schisandrin A has a protective effect against LPS-induced inflammatory and oxidative responses in RAW 264.7 cells by inhibiting the NF-κB, MAPK and PI3K/Akt pathways; these effects are mediated, at least in part, by the activation of the Nrf2/HO-1 pathway. Based on these results, it is concluded that schisandrin A may have therapeutic potential for treating inflammatory and oxidative disorders caused by over-activation of macrophages.
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Affiliation(s)
- Da Hye Kwon
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Republic of Korea
| | - Eun Ok Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Sun-Hee Leem
- Department of Biological Science, College of Natural Sciences, Dong-A University, Busan 49315, Republic of Korea
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Sung-Kwon Moon
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
| | - Seok-Joong Yun
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Hye Jin Hwang
- Department of Food and Nutrition, College of Nursing, Healthcare Sciences and Human Ecology, Dongeui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Department of Life Science and Biotechnology, College of Engineering, Dongeui University, Busan 47340, Republic of Korea
| | - Wun-Jae Kim
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
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Xu X, Zhang L, Ye X, Hao Q, Zhang T, Cui G, Yu M. Nrf2/ARE pathway inhibits ROS-induced NLRP3 inflammasome activation in BV2 cells after cerebral ischemia reperfusion. Inflamm Res 2017; 67:57-65. [PMID: 28956063 DOI: 10.1007/s00011-017-1095-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/20/2017] [Accepted: 09/21/2017] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVE Current therapies for ischemia/reperfusion are insufficient because of our poor understanding of the mechanisms of brain injury after ischemic stroke. As a vital component of the innate immune system, NLRP3 inflammasome contributes to ischemic brain injury; however, a detailed understanding of their molecular mechanisms is unknown. This study was designed to investigate the effect of nuclear factor E2-related factor-2 (Nrf2) on NLRP3 inflammasome. MATERIALS AND METHODS BV2 microglial cells were pretreated with tert-butylhydroquinone or Nrf2 CRISPR plasmid before oxygen-glucose deprivation/reoxygenation (OGDR) exposure. Then we observed the effect of Nrf2 on NLRP3 inflammasome. RESULTS We identified that Nrf2 activation inhibited NLRP3 inflammasome expression and subsequent IL-1β generation. Furthermore, the activation of NLRP3 inflammasome was sensitive to the reactive oxygen species (ROS) level and Nrf2 could decrease the production of ROS. Additionally, as a Nrf2-targeted ARE gene, NADPH quinone oxidoreductase 1 was involved in the inhibition of the NLRP3 inflammasome. CONCLUSION We elucidated an inhibitory regulation of Nrf2/ARE pathway on ROS-induced NLRP3 inflammasome activation in BV2 microglial cells after OGDR exposure.
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Affiliation(s)
- Xiujian Xu
- Department of Neurology, The Affiliated Hospital of Jiangsu University, No. 438 Jiefang Road, Zhenjiang, 212001, Jiangsu, China
| | - Liang Zhang
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xinchun Ye
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, No. 99 West Huaihai Road, Xuzhou, 221006, Jiangsu, China
| | - Qi Hao
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Tao Zhang
- Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Guiyun Cui
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, No. 99 West Huaihai Road, Xuzhou, 221006, Jiangsu, China.
| | - Ming Yu
- Department of Neurology, The Affiliated Hospital of Jiangsu University, No. 438 Jiefang Road, Zhenjiang, 212001, Jiangsu, China.
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Kim SM, Lee HM, Hwang KA, Choi KC. Benzo(a)pyrene induced cell cycle arrest and apoptosis in human choriocarcinoma cancer cells through reactive oxygen species-induced endoplasmic reticulum-stress pathway. Food Chem Toxicol 2017; 107:339-348. [DOI: 10.1016/j.fct.2017.06.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 11/25/2022]
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