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Lin YC, Chang YJ, Gau SS, Lo CM, Yang RB. SCUBE2 regulates adherens junction dynamics and vascular barrier function during inflammation. Cardiovasc Res 2024:cvae132. [PMID: 38870316 DOI: 10.1093/cvr/cvae132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 04/16/2024] [Accepted: 05/03/2024] [Indexed: 06/15/2024] Open
Abstract
AIMS SCUBE2 (Signal peptide-CUB-epidermal growth factor-like domain-containing protein 2) is a secreted or membrane-bound protein originally identified from endothelial cells (ECs). Our previous work showed that SCUBE2 forms a complex with E-cadherin and stabilizes epithelial adherens junctions (AJs) to promote epithelial phenotypes. However, it remains unclear whether SCUBE2 also interacts with vascular endothelial (VE)-cadherin and modulates EC barrier function. In this study, we investigated whether and how SCUBE2 in ECs regulates vascular barrier maintenance. METHODS AND RESULTS We showed that SCUBE2 colocalized and interacted with VE-cadherin and VE-protein tyrosine phosphatase (VE-PTP) within EC AJs. Furthermore, SCUBE2 knockdown disrupted EC AJs and increased EC permeability. Expression of EC SCUBE2 was suppressed at both mRNA and protein levels via the nuclear factor-κB (NF-κB) signaling pathway in response to pro-inflammatory cytokines or permeability-inducing agents. In line with these findings, EC-specific deletion of Scube2 (EC-KO) in mice impaired baseline barrier function and worsened vascular leakiness of peripheral capillaries after local injection of histamine or vascular endothelial growth factor. EC-KO mice were also sensitive to pulmonary vascular hyperpermeability and leukocyte infiltration in response to acute endotoxin- or influenza virus-induced systemic inflammation. Meanwhile, EC-specific SCUBE2-overexpressing mice were protected from these effects. Molecular studies suggested that SCUBE2 acts as a scaffold molecule enabling VE-PTP to dephosphorylate VE-cadherin, which prevents VE-cadherin internalization and stabilizes EC AJs. As such, loss of SCUBE2 resulted in hyperphosphorylation of VE-cadherin at tyrosine 685, which led to its endocytosis, thus destabilizing EC AJs and reducing barrier function. All of these effects were exacerbated by inflammatory insults. CONCLUSIONS We found that SCUBE2 contributes to vascular integrity by recruiting VE-PTP to dephosphorylate VE-cadherin and stabilize AJs, thereby promoting EC barrier function. Moreover, our data suggest that genetic overexpression or pharmacological upregulation of SCUBE2 may help to prevent vascular leakage and edema in inflammatory diseases.
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Affiliation(s)
- Yuh-Charn Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ya-Jen Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Shiang-Shin Gau
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto, Japan
| | - Chun-Min Lo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taiwan
| | - Ruey-Bing Yang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taiwan
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Hu Z, Dai J, Xu T, Chen H, Shen G, Zhou J, Ma H, Wang Y, Jin L. FGF18 alleviates sepsis-induced acute lung injury by inhibiting the NF-κB pathway. Respir Res 2024; 25:108. [PMID: 38419044 PMCID: PMC10902988 DOI: 10.1186/s12931-024-02733-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/14/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Acute lung injury (ALI) is a devastating clinical disorder with a high mortality rate, and there is an urgent need for more effective therapies. Fibroblast growth factor 18 (FGF18) has potent anti-inflammatory properties and therefore has become a focus of research for the treatment of lung injury. However, the precise role of FGF18 in the pathological process of ALI and the underlying mechanisms have not been fully elucidated. METHODS A mouse model of ALI and human umbilical vein endothelial cells (HUVEC) stimulated with lipopolysaccharide (LPS) was established in vivo and in vitro. AAV-FGF18 and FGF18 proteins were used in C57BL/6J mice and HUVEC, respectively. Vascular cell adhesion molecule-1 (VCAM-1), intercellular adhesion molecule-1 (ICAM-1), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), and p65 protein levels were determined by western blotting or immunofluorescent staining. Afterward, related inhibitors were used to explore the potential mechanism by which FGF18 relieves inflammation. RESULTS In this study, we found that FGF18 was significantly upregulated in LPS-induced ALI mouse lung tissues and LPS-stimulated HUVECs. Furthermore, our studies demonstrated that overexpressing FGF18 in the lung or HUVEC could significantly alleviate LPS-induced lung injury and inhibit vascular leakage. CONCLUSIONS Mechanically, FGF18 treatment dramatically inhibited the NF-κB signaling pathway both in vivo and in vitro. In conclusion, these results indicate that FGF18 attenuates lung injury, at least partially, via the NF-κB signaling pathway and therefore may be a potential therapeutic target for ALI.
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Affiliation(s)
- Zhenyu Hu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jindan Dai
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Tianpeng Xu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hui Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Guoxiu Shen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jie Zhou
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hongfang Ma
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yang Wang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China.
| | - Litai Jin
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.
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3
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Lee KI, Fang KM, Kuo CY, Huang CF, Liu SH, Liu JM, Lai WC, Chang KC, Su CC, Chen YW. Roles of oxidative stress/JNK/ERK signals in paraquat-triggered hepatic apoptosis. Curr Res Toxicol 2024; 6:100155. [PMID: 38379848 PMCID: PMC10877118 DOI: 10.1016/j.crtox.2024.100155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/18/2024] [Accepted: 02/07/2024] [Indexed: 02/22/2024] Open
Abstract
Paraquat (PQ), a toxic and nonselective bipyridyl herbicide, is one of the most extensively used pesticides in agricultural countries. In addition to pneumotoxicity, the liver is an important target organ for PQ poisoning in humans. However, the mechanism of PQ in hepatotoxicity remains unclear. In this study, we found that exposure of rat hepatic H4IIE cells to PQ (0.1-2 mM) induced significant cytotoxicity and apoptosis, which was accompanied by mitochondria-dependent apoptotic signals, including loss of mitochondrial membrane potential (MMP), cytosolic cytochrome c release, and changes in the Bcl-2/Bax mRNA ratio. Moreover, PQ (0.5 mM) exposure markedly induced JNK and ERK1/2 activation, but not p38-MAPK. Blockade of JNK and ERK1/2 signaling by pretreatment with the specific pharmacological inhibitors SP600125 and PD98059, respectively, effectively prevented PQ-induced cytotoxicity, mitochondrial dysfunction, and apoptotic events. Additionally, PQ exposure stimulated significant oxidative stress-related signals, including reactive oxygen species (ROS) generation and intracellular glutathione (GSH) depletion, which could be reversed by the antioxidant N-Acetylcysteine (NAC). Buffering the oxidative stress response with NAC also effectively abrogated PQ-induced hepatotoxicity, MMP loss, apoptosis, and phosphorylation of JNK and ERK1/2 protein, however, the JNK or ERK inhibitors did not suppress ROS generation in PQ-treated cells. Collectively, these results demonstrate that PQ exposure induces hepatic cell toxicity and death via an oxidative stress-dependent JNK/ERK activation-mediated downstream mitochondria-regulated apoptotic pathway.
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Affiliation(s)
- Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan
| | - Chun-Ying Kuo
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan
| | - Chun-Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan
- Department of Nursing, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Jui-Ming Liu
- Department of Urology, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan
| | - Wei-Cheng Lai
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan
| | - Kai-Chih Chang
- Center for Digestive Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan
| | - Ya-Wen Chen
- Department of Physiology, School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan
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Meamar R, Haddad S, Nasiri R, Borojeni GS, Kolahdoozan M, Eizadi-Mood N, Pourisfahani SA, Mahvari R, Rezaei A, Fesharaki M. Ferulic acid grafted into β-cyclodextrin nanosponges ameliorates Paraquat-induced human MRC-5 fibroblast injury. ENVIRONMENTAL TOXICOLOGY 2024; 39:44-60. [PMID: 37615264 DOI: 10.1002/tox.23941] [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: 05/17/2023] [Revised: 07/23/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023]
Abstract
Paraquat (PQ) is a commercially important and effective herbicide in the world. Nevertheless, it has higher toxicity causing acute organ damage and different complications, mainly in the lungs and kidneys. Ferulic acid (FA), 4-hydroxy-3-methoxycinnamic acid imposes multiple pharmacological impacts. No protective effect of FA on PQ poisoning-caused human embryonic lung fibroblast damage has not been reported. Despite their many beneficial effects, FA is characterized by poor water solubility, low bioavailability, and phytochemical instability. To solve the problem, β-cyclodextrin nanosponge (β-CD NSs) was utilized to increase the solubility of FA so that it was grafted into β-CD NSs to establish β-CD@FA NSs. The purpose of this work was to examine for the first time the protective effect of β-CD@FA NS on MRC-5 human lung cells damages induced by PQ poisoning. MTS assay was performed to investigate the viability of MRC-5 cells at different concentrations of FA/β-CD@FA NSs when cells were co-cultured with 0.2 μg/mL PQ. The flow cytometry study was carried out to determine apoptosis. Malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) levels were detected using appropriate biochemistry kits. Compared with the PQ group, the cell activity, CAT, and SOD levels were significantly increased in the FA and chiefly in β-CD@FA NSs intervention groups, whereas apoptosis and MDA levels were markedly decreased. The inflammatory factors tumor necrosis factor-alpha (TNF-α), interleukin 6 (IL-6), and interleukin 22 (IL-22) were detected. The results demonstrate that β-CD@FA NSs can inhibit PQ-induced cell damage by enhancing antioxidant stress capacity and regulation of inflammatory responses.
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Affiliation(s)
- Rokhsareh Meamar
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shadi Haddad
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rozita Nasiri
- Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
| | - Gelare Sadeghi Borojeni
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Isfahan, Iran
- Department of Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Tehran, Iran
| | - Majid Kolahdoozan
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Isfahan, Iran
| | - Nastaran Eizadi-Mood
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Razieh Mahvari
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Atefe Rezaei
- Department of Food Science and Technology, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrafarin Fesharaki
- Isfahan Clinical Toxicology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Zhou H, Yang T, Lu Z, He X, Quan J, Liu S, Chen Y, Wu K, Cao H, Liu J, Yu L. Liquiritin exhibits anti-acute lung injury activities through suppressing the JNK/Nur77/c-Jun pathway. Chin Med 2023; 18:35. [PMID: 37013552 PMCID: PMC10068703 DOI: 10.1186/s13020-023-00739-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/22/2023] [Indexed: 04/05/2023] Open
Abstract
BACKGROUND Licorice (Glycyrrhiza uralensis Fisch.), a well-known traditional medicine, is traditionally used for the treatment of respiratory disorders, such as cough, sore throat, asthma and bronchitis. We aim to investigate the effects of liquiritin (LQ), the main bioactive compound in licorice against acute lung injury (ALI) and explore the potential mechanism. METHODS Lipopolysaccharide (LPS) was used to induce inflammation in RAW264.7 cells and zebrafish. Intratracheal instillation of 3 mg/kg of LPS was used for induction an ALI mice model. The concentrations of IL-6 and TNF-α were tested using the enzyme linked immunosorbent assay. Western blot analysis was used to detect the expression of JNK/Nur77/c-Jun related proteins. Protein levels in bronchoalveolar lavage fluid (BALF) was measured by BCA protein assay. The effect of JNK on Nur77 transcriptional activity was determined by luciferase reporter assay, while electrophoretic mobility shift assay was used to examine the c-Jun DNA binding activity. RESULTS LQ has significant anti-inflammatory effects in zebrafish and RAW264.7 cells. LQ inhibited the expression levels of p-JNK (Thr183/Tyr185), p-Nur77 (Ser351) and p-c-Jun (Ser63), while elevated the Nur77 expression level. Inhibition of JNK by a specific inhibitor or small interfering RNA enhanced the regulatory effect of LQ on Nur77/c-Jun, while JNK agonist abrogated LQ-mediated effects. Moreover, Nur77-luciferase reporter activity was suppressed after JNK overexpression. The effects of LQ on the expression level of c-Jun and the binding activity of c-Jun with DNA were attenuated after Nur77 siRNA treatment. LQ significantly ameliorated LPS-induced ALI with the reduction of lung water content and BALF protein content, the downregulation of TNF-α and IL-6 levels in lung BALF and the suppression of JNK/Nur77/c-Jun signaling, which can be reversed by a specific JNK agonist. CONCLUSION Our results indicated that LQ exerts significant protective effects against LPS-induced inflammation both in vivo and in vitro via suppressing the activation of JNK, and consequently inhibiting the Nur77/c-Jun signaling pathway. Our study suggests that LQ may be a potential therapeutic candidate for ALI and inflammatory disorders.
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Affiliation(s)
- Hongling Zhou
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Tangjia Yang
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Zibin Lu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Xuemei He
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Jingyu Quan
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Shanhong Liu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Yuyao Chen
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Kangtai Wu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Huihui Cao
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
| | - Junshan Liu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, People's Republic of China.
| | - Linzhong Yu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
- Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515, People's Republic of China.
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Li W, Li M, Chen K, Tang Y, Yin R, Lan L, Hong G. Oxaloacetate acid ameliorates paraquat-induced acute lung injury by alleviating oxidative stress and mitochondrial dysfunction. Front Pharmacol 2022; 13:1029775. [PMID: 36313362 PMCID: PMC9606601 DOI: 10.3389/fphar.2022.1029775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 10/03/2022] [Indexed: 11/30/2022] Open
Abstract
Acute lung injury (ALI) is the primary cause of death among patients with acute paraquat (PQ) poisoning, whereby peroxidative damage is an important mechanism underlying PQ-induced lung injury. There is a lack of effective interventional drugs for patients with PQ poisoning. Oxaloacetic acid (OAA) participates in multiple in vivo metabolic processes, whereby it facilitates the clearance of reactive oxygen species (ROS) and improves mitochondrial function. The study aimed to assess the protective effects of OAA on PQ-induced ALI and elucidate the underlying molecular mechanism. Our data demonstrated that OAA treatment significantly alleviated PQ-induced ALI and improved the survival rate of PQ-poisoned mice, and also alleviated PQ-induced cellular oxidative stress and mitochondrial dysfunction. OAA-mediated alleviation of PQ-induced mitochondrial dysfunction depends on the following mechanisms which may explain the above findings: 1) OAA effectively cleared intracellular ROS, inhibited ROS accumulation, and mitochondrial depolarization; 2) OAA inhibited the downregulation of L-OPA1 and MFN2 caused by PQ and promoted a dynamic balance of mitochondrial fusion and fission, and 3) the expression of PGC-1α, TFAM, COX2, and COX4I1, increased significantly following OAA intervention which improved mitochondrial respiratory functions and promoted its biogenesis and energy metabolism in damaged cells. In conclusion, OAA effectively cleared ROS and improved mitochondrial dysfunction, thereby significantly improving ALI caused by PQ poisoning and the animal survival rate. Therefore, OAA may be a potential drug for the treatment of PQ poisoning.
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Affiliation(s)
- Wenwen Li
- First Clinical Medicine Institute, Wenzhou Medical University, Wenzhou, China
| | - Mengxuan Li
- First Clinical Medicine Institute, Wenzhou Medical University, Wenzhou, China
| | - Kaiyuan Chen
- First Clinical Medicine Institute, Wenzhou Medical University, Wenzhou, China
| | - Yahui Tang
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- Wenzhou Key Laboratory of Emergency and Disaster Medicine, Wenzhou, China
| | - Ran Yin
- First Clinical Medicine Institute, Wenzhou Medical University, Wenzhou, China
| | - Linhua Lan
- First Clinical Medicine Institute, Wenzhou Medical University, Wenzhou, China
| | - Guangliang Hong
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- Wenzhou Key Laboratory of Emergency and Disaster Medicine, Wenzhou, China
- *Correspondence: Guangliang Hong,
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Dexmedetomidine Attenuates LPS-Stimulated Alveolar Type II Cells’ Injury through Upregulation of miR-140-3p and Partial Suppression of PD-L1 Involving Inactivating JNK-Bnip3 Pathway. Can Respir J 2022; 2022:8433960. [PMID: 35958433 PMCID: PMC9357803 DOI: 10.1155/2022/8433960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/10/2022] [Accepted: 07/14/2022] [Indexed: 11/24/2022] Open
Abstract
Dexmedetomidine (DEX), which is reported to be a newly discovered, novel α-2 adrenoceptor agonist, is known to exhibit anti-inflammatory properties in several diseases. DEX regulates inflammation-related signaling pathways and genes through interactions with several miRNAs. This study verified that expression levels of miR-140-3p were diminished when alveolar type II cells were exposed to LPS. However, the levels of miR-140-3p were confirmed as showing an increase with DEX treatment. These observations revealed that the expression of miR-140-3p was related to the beneficial effects that accompanied the DEX treatment of LPS-induced ALI. In addition, PD-1/PD-L1 expression increased extensively when RLE-6TN cells were induced by LPS. The increased expression was reduced after treatment with DEX. Thus, it appears that the PD-L1 expression was targeted directly by miR-140-3p, resulting in the partial repression of PD-L1 levels, which involved the inhibition of p-JNK and Bnip3 expression. Therefore, DEX was shown to inhibit the PD-L1 expression by promoting partially increased miR-140-3p levels in RLE-6TN cells. DEX also inactivated the JNK-Bnip3 pathway, resulting in the inhibition of inflammation and alleviating alveolar type II cell injury.
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Jiang FF, Wang RQ, Guo CY, Zheng K, Long-Liu H, Su L, Xie SS, Chen HC, Liu ZF. Phospho-proteomics identifies a critical role of ATF2 in pseudorabies virus replication. Virol Sin 2022; 37:591-600. [PMID: 35688418 PMCID: PMC9437614 DOI: 10.1016/j.virs.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 06/02/2022] [Indexed: 11/02/2022] Open
Abstract
Pseudorabies virus (PRV), an etiological agent of pseudorabies in livestock, has negatively affected the porcine industry all over the world. Epithelial cells are reported as the first site of PRV infection. However, the role of host proteins and its related signaling pathways in PRV replication is largely unclear. In this study, we performed a quantitative phosphoproteomics screening on PRV-infected porcine kidney (PK-15) epithelial cells. Totally 5723 phosphopeptides, corresponding to 2180 proteins, were obtained, and the phosphorylated states of 810 proteins were significantly different in PRV-infected cells compared with mock-infected cells (P < 0.05). GO and KEGG analysis revealed that these differentially expressed phosphorylated proteins were predominantly related to RNA transport and MAPK signaling pathways. Further functional studies of NF-κB, transcription activator factor-2 (ATF2), MAX and SOS genes in MAPK signaling pathway were analyzed using RNA interference (RNAi) knockdown. It showed that only ATF2-knockdown reduces both PRV titer and viral genome copy number. JNK pathway inhibition and CRISPR/Cas9 gene knockout showed that ATF2 was required for the effective replication of PRV, especially during the biogenesis of viral genome DNA. Subsequently, by overexpression of the ATF2 gene and point mutation of the amino acid positions 69/71 of ATF2, it was further demonstrated that the phosphorylation of ATF2 promoted PRV replication. These findings suggest that ATF2 may provide potential therapeutic target for inhibiting PRV infection. Phosphoproteomic profiling of PRV-infected PK-15 cells with iTRAQ-quantification. JNK pathway regulates ATF2 phosphorylation and PRV replication. Phosphorylation of ATF2 promotes PRV replication.
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Xie P, Yan LJ, Zhou HL, Cao HH, Zheng YR, Lu ZB, Yang HY, Ma JM, Chen YY, Huo C, Tian C, Liu JS, Yu LZ. Emodin Protects Against Lipopolysaccharide-Induced Acute Lung Injury via the JNK/Nur77/c-Jun Signaling Pathway. Front Pharmacol 2022; 13:717271. [PMID: 35370650 PMCID: PMC8968870 DOI: 10.3389/fphar.2022.717271] [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: 05/30/2021] [Accepted: 02/07/2022] [Indexed: 12/11/2022] Open
Abstract
Background: Acute lung injury (ALI) is a serious inflammatory disease with clinical manifestations of hypoxemia and respiratory failure. Presently, there is no effective treatment of ALI. Although emodin from Rheum palmatum L. exerts anti-ALI properties, the underlying mechanisms have not been fully explored. Purpose: This study aimed to investigate the therapeutic effect and mechanism of emodin on LPS-induced ALI in mice. Methods: RAW264.7 cells and zebrafish larvae were stimulated by LPS to establish inflammatory models. The anti-inflammatory effect of emodin was assessed by ELISA, flow cytometric analysis, and survival analysis. In vitro mechanisms were explored by using Western blotting, luciferase assay, electrophoretic mobility shift assay (EMSA), and small interfering RNA (siRNA) approach. The acute lung injury model in mice was established by the intratracheal administration of LPS, and the underlying mechanisms were assessed by detecting changes in histopathological and inflammatory markers and Western blotting in lung tissues. Results: Emodin inhibited the inflammatory factor production and oxidative stress in RAW264.7 cells, and prolonged the survival of zebrafish larvae after LPS stimulation. Emodin suppressed the expression levels of phosphorylated JNK at Thr183/tyr182 and phosphorylated Nur77 at Ser351 and c-Jun, and increased the expression level of Nur77 in LPS-stimulated RAW264.7 cells, while these regulatory effects of emodin on Nur77/c-Jun were counteracted by JNK activators. The overexpression of JNK dampened the emodin-mediated increase in Nur77 luciferase activity and Nur77 expression. Moreover, the inhibitory effect of emodin on c-Jun can be attenuated by Nur77 siRNA. Furthermore, emodin alleviated LPS-induced ALI in mice through the regulation of the JNK/Nur77/c-Jun pathway. Conclusions: Emodin protects against LPS-induced ALI through regulation on JNK/Nur77/c-Jun signaling. Our results indicate the potential of emodin in the treatment of ALI.
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Affiliation(s)
- Pei Xie
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Li-Jun Yan
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Hong-Ling Zhou
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Hui-Hui Cao
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Yuan-Ru Zheng
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Zi-Bin Lu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Hua-Yi Yang
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Jia-Mei Ma
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Yu-Yao Chen
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Chuying Huo
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Chunyang Tian
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Jun-Shan Liu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
| | - Lin-Zhong Yu
- Third Level Research Laboratory of State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou, China
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10
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Zhu Y, Shuai W, Zhao M, Pan X, Pei J, Wu Y, Bu F, Wang A, Ouyang L, Wang G. Unraveling the Design and Discovery of c-Jun N-Terminal Kinase Inhibitors and Their Therapeutic Potential in Human Diseases. J Med Chem 2022; 65:3758-3775. [PMID: 35200035 DOI: 10.1021/acs.jmedchem.1c01947] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
c-Jun N-terminal kinases (JNKs), members of the mitogen-activated protein kinase (MAPK) family, are encoded by three genes: jnk1, jnk2, and jnk3. JNKs are involved in the pathogenesis and development of many diseases, such as neurodegenerative diseases, inflammation, and cancers. Therefore, JNKs have become important therapeutic targets. Many JNK inhibitors have been discovered, and some have been introduced into clinical trials. However, the study of isoform-selective JNK inhibitors is still a challenging task. To further develop novel JNK inhibitors with clinical value, a comprehensive understanding of JNKs and their corresponding inhibitors is required. In this Perspective, we introduced the JNK signaling pathways and reviewed different chemical types of JNK inhibitors, focusing on their structure-activity relationships and biological activities. The challenges and strategies for the development of JNK inhibitors are also discussed. It is hoped that this Perspective will provide valuable references for the development of novel selective JNK inhibitors.
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Affiliation(s)
- Yumeng Zhu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Wen Shuai
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Min Zhao
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Xiaoli Pan
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Junping Pei
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Yongya Wu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Faqian Bu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Aoxue Wang
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Liang Ouyang
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
| | - Guan Wang
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, and Collaborative Innovation Center of Biotherapy, Sichuan University, Chengdu 610041, China
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11
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Zhang BF, Song W, Wang J, Wen PF, Zhang YM. Anti-high-mobility group box-1 (HMGB1) mediates the apoptosis of alveolar epithelial cells (AEC) by receptor of advanced glycation end-products (RAGE)/c-Jun N-terminal kinase (JNK) pathway in the rats of crush injuries. J Orthop Surg Res 2022; 17:20. [PMID: 35033142 PMCID: PMC8760810 DOI: 10.1186/s13018-021-02903-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/30/2021] [Indexed: 11/10/2022] Open
Abstract
Objectives The lung injury is often secondary to severe trauma. In the model of crush syndrome, there may be secondary lung injury. We hypothesize that high-mobility group box 1 (HMGB1), released from muscle tissue, mediates the apoptosis of alveolar epithelial cells (AEC) via HMGB1/Receptor of advanced glycation end-products (RAGE)/c-Jun N-terminal kinase (JNK) pathway. The study aimed to investigate how HMGB1 mediated the apoptosis of AEC in the rat model. Methods Seventy-five SD male rats were randomly divided into five groups: CS, CS + vehicle, CS + Ethyl pyruvate (EP), CS + FPS-ZM1 group, and CS + SP600125 groups. When the rats CS model were completed after 24 h, the rats were sacrificed. We collected the serum and the whole lung tissues. Inflammatory cytokines were measured in serum samples. Western blot and RT-qPCR were used to quantify the protein and mRNA. Lastly, apoptotic cells were detected by TUNEL. We used SPSS 25.0 for statistical analyses. Results Nine rats died during the experiments. Dead rats were excluded from further analysis. Compared to the CS group, levels of HMGB1 and inflammatory cytokines in serum were downregulated in CS + EP, CS + FPS-ZM1, and CS + SP600125 groups. Western blot and RT-qPCR analysis revealed a significant downregulation of HMGB1, RAGE, and phosphorylated-JNK in CS + EP, CS + FPS-ZM1, and CS + SP600125 groups, compared with the CS groups, excluding total-JNK mRNA. Apoptosis of AEC was used TUNEL to assess. We found the TUNEL-positive cells were downregulated in CS + EP, CS + FPS-ZM1, and CS + SP600125 groups. Conclusion The remote lung injury begins early after crush injuries. The HMGB1/RAGE/JNK signaling axis is an attractive target to abrogate the apoptosis of AEC after crush injuries.
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Affiliation(s)
- Bin-Fei Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an, Shaanxi Province, 710054, People's Republic of China
| | - Wei Song
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an, Shaanxi Province, 710054, People's Republic of China
| | - Jun Wang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an, Shaanxi Province, 710054, People's Republic of China
| | - Peng-Fei Wen
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an, Shaanxi Province, 710054, People's Republic of China
| | - Yu-Min Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an, Shaanxi Province, 710054, People's Republic of China.
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12
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Fetuin-A regulates adipose tissue macrophage content and activation in insulin resistant mice through MCP-1 and iNOS: involvement of IFNγ-JAK2-STAT1 pathway. Biochem J 2021; 478:4027-4043. [PMID: 34724561 DOI: 10.1042/bcj20210442] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/12/2022]
Abstract
In the context of obesity-induced adipose tissue (AT) inflammation, migration of macrophages and their polarization from predominantly anti-inflammatory to proinflammatory subtype is considered a pivotal event in the loss of adipose insulin sensitivity. Two major chemoattractants, monocyte chemoattractant protein-1 (MCP-1) and Fetuin-A (FetA), have been reported to stimulate macrophage migration into inflamed AT instigating inflammation. Moreover, FetA could notably modulate macrophage polarization, yet the mechanism(s) is unknown. The present study was undertaken to elucidate the mechanistic pathway involved in the actions of FetA and MCP-1 in obese AT. We found that FetA knockdown in high fat diet (HFD) fed mice could significantly subdue the augmented MCP-1 expression and reduce adipose tissue macrophage (ATM) content thereby indicating that MCP-1 is being regulated by FetA. Additionally, knockdown of FetA in HFD mice impeded the expression of inducible nitric oxide synthase (iNOS) reverting macrophage activation from mostly proinflammatory to anti-inflammatory state. It was observed that the stimulating effect of FetA on MCP-1 and iNOS was mediated through interferon γ (IFNγ) induced activation of JAK2-STAT1-NOX4 pathway. Furthermore, we detected that the enhanced IFNγ expression was accounted by the stimulatory effect of FetA upon the activities of both cJun and JNK. Taken together, our findings revealed that obesity-induced FetA acts as a master upstream regulator of AT inflammation by regulating MCP-1 and iNOS expression through JNK-cJun-IFNγ-JAK2-STAT1 signaling pathway. This study opened a new horizon in understanding the regulation of ATM content and activation in conditions of obesity-induced insulin resistance.
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13
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Jiang Z, Shen J, Ding J, Yuan Y, Gao L, Yang Z, Zhao X. USP18 mitigates lipopolysaccharide-induced oxidative stress and inflammation in human pulmonary microvascular endothelial cells through the TLR4/NF-κB/ROS signaling. Toxicol In Vitro 2021; 75:105181. [PMID: 33930521 DOI: 10.1016/j.tiv.2021.105181] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/19/2021] [Accepted: 04/25/2021] [Indexed: 12/16/2022]
Abstract
As a type I interferon response gene, ubiquitin-specific protease 18 (USP18) has been shown to be widely involved in oxidative stress and immune regulation processes. However, the relationship between USP18 and acute lung injury (ALI) is unclear. This study aimed to analyze the role of USP18 in the pathogenesis of ALI. Lipopolysaccharide (LPS) treatment up-regulated the expression of USP18 mRNA and protein in human pulmonary microvascular endothelial cells (hPMVECs). USP18 overexpression increased the viability of LPS-induced hPMVECs, and reduced LPS-induced cell damage. Additionally, USP overexpression increased the activity of SOD and CAT, and reduced the production of NO and MDA in LPS-induced hPMVECs. Moreover, overexpression of USP18 inhibited the secretion of IL-1β, IL-6, TNF-α, and IL-18 in LPS-induced hPMVECs. USP18 overexpression restrained LPS-induced upregulation of TLR4 and the excessive phosphorylation of p65 and IκBα, as well as the production of reactive oxygen species (ROS). TLR4 agonist MPLA attenuated the inhibitory effect of USP18 overexpression on LPS-induced oxidative stress and inflammation in hPMVECs. In addition, USP18 ameliorated LPS induced ALI in vivo. In conclusion, USP18 may resist LPS-induced oxidative stress and inflammatory response in hPMVECs by inhibiting the TLR4/NF-κB/ROS signaling pathway, which may provide new and complementary strategies for ALI treatment.
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Affiliation(s)
- Zeyu Jiang
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
| | - Jiang Shen
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
| | - Jie Ding
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China.
| | - Yan Yuan
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
| | - Lulu Gao
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
| | - Zhuocheng Yang
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
| | - Xin Zhao
- Department of Anesthesiology, The First People's Hospital of Changzhou, PR China
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14
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Xie D, Zhao H, Lu J, He F, Liu W, Yu W, Wang Q, Hisatome I, Yamamoto T, Koyama H, Cheng J. High uric acid induces liver fat accumulation via ROS/JNK/AP-1 signaling. Am J Physiol Endocrinol Metab 2021; 320:E1032-E1043. [PMID: 33900847 DOI: 10.1152/ajpendo.00518.2020] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Uric acid is the end metabolite derived from the oxidation of purine compounds. Overwhelming evidence shows the vital interrelationship between hyperuricemia (HUA) and nonalcoholic fatty liver disease (NAFLD). However, the mechanisms for this association remain unclear. In this study, we established a urate oxidase-knockout (Uox-KO) mouse model by clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 technology. To study the correlation between HUA and NAFLD, human HepG2 hepatoma cells were treated in culture medium with high level of uric acid. In vivo, the Uox-KO mice spontaneously developed hyperuricemia and aberrant lipid-metabolism, concomitant with abnormal hepatic fat accumulation. HUA activated c-Jun N-terminal kinase (JNK) in vivo and in vitro. Furthermore, inhibiting JNK activation by a JNK-specific inhibitor, SP600125, decreased fat accumulation and lipogenic gene expression induced by HUA. Overexpression of the lipogenic enzymes fatty acid synthase and acetyl-CoA carboxylase 1 was via activation of JNK, which was blocked by the JNK inhibitor SP600125. HUA activated AP-1 to upregulate lipogenic gene expression via JNK activation. In addition, HUA caused mitochondrial dysfunction and reactive oxygen species production. Pretreatment with the antioxidant N-acetyl-l-cysteine could ameliorate HUA-activated JNK and hepatic steatosis. These data suggest that ROS/JNK/AP-1 signaling plays an important role in HUA-mediated fat accumulation in liver.NEW & NOTEWORTHY Hyperuricemia and nonalcoholic fatty liver disease are global public health problems, which are strongly associated with metabolic syndrome. In this study, we demonstrate that uric acid induces hepatic fat accumulation via the ROS/JNK/AP-1 pathway. This study identifies a new mechanism of NAFLD pathogenesis and new potential therapeutic strategies for HUA-induced NAFLD.
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Affiliation(s)
- De Xie
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Hairong Zhao
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Jiaming Lu
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Furong He
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Weidong Liu
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Wei Yu
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Qiang Wang
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Ichiro Hisatome
- Division of Regenerative Medicine and Therapeutics, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Sciences, Tottori University, Yonago, Japan
| | - Tetsuya Yamamoto
- Department of Diabetes, Endocrinology and Clinical Immunology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Hidenori Koyama
- Department of Diabetes, Endocrinology and Clinical Immunology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Jidong Cheng
- Department of Endocrinology, Xiang'an Hospital of Xiamen University, Xiamen, China
- Department of Diabetes, Endocrinology and Clinical Immunology, Hyogo College of Medicine, Nishinomiya, Japan
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15
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Hui Z, Jie H, Fan GH. Expression of DUSP12 Reduces Lung Vascular Endothelial Cell Damage in a Murine Model of Lipopolysaccharide-Induced Acute Lung Injury via the Apoptosis Signal-Regulating Kinase 1 (ASK1)-Jun N-Terminal Kinase Activation (JNK) Pathway. Med Sci Monit 2021; 27:e930429. [PMID: 33811209 PMCID: PMC8025659 DOI: 10.12659/msm.930429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/16/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Acute lung injury (ALI) results from damage to the alveolar capillary endothelial cells and can result in acute respiratory distress syndrome (ARDS). This study aimed to investigate murine lung vascular endothelial cells (MLECs) damage in a murine model of lipopolysaccharide (LPS)-induced ALI. MATERIAL AND METHODS Mice were injected with LPS to induce an acute lung injury model. An adenovirus transfection system was used to overexpress or knockdown DUSP12 in mice. MLECs were isolated, cultured and transfected with DUSP12-overexpressing adenovirus or with DUSP12 siRNA to knockdown DUSP12. LPS was used to establish a cell injury model. ELISA and RT-PCR were used to examine cell inflammation. LPS-induced oxidative stress was also evaluated using commercial kits. RESULTS A decreased level of DUSP12 was observed in MLECs treated with LPS. DUSP12 overexpression in mice attenuated LPS-induced lung inflammation and lung injury, as reflected by reduced levels of proinflammatory cytokines. Mice with DUSP12 knockdown exhibited worsened lung inflammation and injury. In vitro, DUSP12 overexpression in endothelial cells ameliorated LPS-induced inflammation, apoptosis, and oxidative stress. DUSP12 silencing in endothelial cells aggravated LPS-induced inflammation, apoptosis, and oxidative stress. Furthermore, we found that DUSP12 directly bound to apoptosis signal-regulating kinase 1 (ASK1) to inhibit Jun N-terminal kinase activation (JNK). A JNK1/2 inhibitor and ASK1 siRNA ameliorated the exacerbating effects of DUSP12 knockdown in vitro. CONCLUSIONS Our data demonstrated that DUSP12 suppressed MLEC injury in response to LPS insult by regulating the ASK1/JNK pathway.
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Affiliation(s)
- Zhao Hui
- Department of Interventional Radiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, P.R. China
| | - Huang Jie
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, P.R. China
| | - Guo-Hua Fan
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, P.R. China
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16
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Li G, Qi W, Li X, Zhao J, Luo M, Chen J. Recent Advances in c-Jun N-Terminal Kinase (JNK) Inhibitors. Curr Med Chem 2021; 28:607-627. [PMID: 32039671 DOI: 10.2174/0929867327666200210144114] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/17/2019] [Accepted: 10/20/2019] [Indexed: 11/22/2022]
Abstract
c-Jun N-Terminal Kinases (JNKs), members of the Mitogen-Activated Protein Kinase (MAPK) signaling pathway, play a key role in the pathogenesis of many diseases including cancer, inflammation, Parkinson's disease, Alzheimer's disease, cardiovascular disease, obesity, and diabetes. Therefore, JNKs represent new and excellent target by therapeutic agents. Many JNK inhibitors based on different molecular scaffolds have been discovered in the past decade. However, only a few of them have advanced to clinical trials. The major obstacle for the development of JNK inhibitors as therapeutic agents is the JNKisoform selectivity. In this review, we describe the recent development of JNK inhibitors, including ATP competitive and ATP non-competitive (allosteric) inhibitors, bidentatebinding inhibitors and dual inhibitors, the challenges, and the future direction of JNK inhibitors as potential therapeutic agents.
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Affiliation(s)
- Gang Li
- Department of Oncology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528300, China
| | - Wenqing Qi
- Department of Pathology, St. Jude Children's Research Hospital, Memphis TN 38105, United States
| | - Xiaoxun Li
- Chengdu Easton Biopharmaceuticals Co., Ltd., Chengdu 611731, China
| | - Jinwu Zhao
- School of Pharmacy, Guangdong Medical University, Songshan Lake Science and Technology Industry Park, Dongguan 523808, China
| | - Meihua Luo
- Department of Oncology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528300, China
| | - Jianjun Chen
- Department of Oncology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528300, China
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17
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Subbiah R, Tiwari RR. The herbicide paraquat-induced molecular mechanisms in the development of acute lung injury and lung fibrosis. Crit Rev Toxicol 2021; 51:36-64. [PMID: 33528289 DOI: 10.1080/10408444.2020.1864721] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The herbicide paraquat (PQ; 1,1'-dimethyl-4,4'-bipyridylium dichloride) is a highly toxic organic heterocyclic herbicide that has been widely used in agricultural settings. Since its commercial introduction in the early 1960s, numerous cases of fatal PQ poisonings attributed to accidental and/or intentional ingestion of PQ concentrated formulations have been reported. The clinical manifestations of the respiratory system during the acute phase of PQ poisoning mainly include acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), followed by pulmonary fibrosis in a later phase. The focus of this review is to summarize the most recent publications related to PQ-induced lung toxicity as well as the underlying molecular mechanisms for PQ-mediated pathologic processes. Growing sets of data from in vitro and in vivo models have demonstrated the involvement of the PQ in regulating lung oxidative stress, inflammatory response, epigenetics, apoptosis, autophagy, and the progression of lung fibrosis. The article also summarizes novel therapeutic avenues based on a literature review, which can be explored as potential means to combat PQ-induced lung toxicity. Finally, we also presented clinical studies on the association of PQ exposure with the incidence of lung injury and pulmonary fibrosis.
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Affiliation(s)
- Rajasekaran Subbiah
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Rajnarayan R Tiwari
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
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18
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Liu XB, Liu F, Liang YY, Yin G, Zhang HJ, Mi XS, Zhang ZJ, So KF, Li A, Xu Y. Luteolin delays photoreceptor degeneration in a mouse model of retinitis pigmentosa. Neural Regen Res 2021; 16:2109-2120. [PMID: 33642401 PMCID: PMC8343326 DOI: 10.4103/1673-5374.303537] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Luteolin is neuroprotective for retinal ganglion cells and retinal pigment epithelial cells after oxidative injury, whereby it can inhibit microglial neurotoxicity. Therefore, luteolin holds the potential to be useful for treatment of retinal diseases. The purpose of this study was to investigate whether luteolin exhibits neuroprotective effects on rod cells in rd10 mice, a slow photoreceptor-degenerative model of retinitis pigmentosa. Luteolin (100 mg/kg) intraperitoneally injected daily from postnatal day 14 (P14) to P25 significantly enhanced the visual performance and retinal light responses of rd10 mice at P25. Moreover, it increased the survival of photoreceptors and improved retinal structure. Mechanistically, luteolin treatment attenuated increases in reactive oxygen species, photoreceptor apoptosis, and reactive gliosis; increased mRNA levels of anti-inflammatory cytokines while lowering that of pro-inflammatory and chemoattractant cytokines; and lowered the ratio of phospho-JNK/JNK. Application of the JNK inhibitor SP600125 exerted a similar protective effect to luteolin, suggesting that luteolin delays photoreceptor degeneration and functional deterioration in rd10 mice through regulation of retinal oxidation and inflammation by inhibiting the JNK pathway. Therefore, luteolin may be useful as a supplementary treatment for retinitis pigmentosa. This study was approved by the Qualified Ethics Committee of Jinan University, China (approval No. IACUC-20181217-02) on December 17, 2018.
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Affiliation(s)
- Xiao-Bin Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Feng Liu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Yi-Yao Liang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Gang Yin
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardio-cerebrovascular Diseases, Jinan University, Guangzhou, Guangdong Province, China
| | - Hui-Jun Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Xue-Song Mi
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Zai-Jun Zhang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardio-cerebrovascular Diseases, Jinan University, Guangzhou, Guangdong Province, China
| | - Kwok-Fai So
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University; Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Ang Li
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University; Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, Guangdong Province, China
| | - Ying Xu
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
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19
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Du J, Wang G, Luo H, Liu N, Xie J. JNK‑IN‑8 treatment alleviates lipopolysaccharide‑induced acute lung injury via suppression of inflammation and oxidative stress regulated by JNK/NF‑κB signaling. Mol Med Rep 2020; 23:150. [PMID: 33355369 PMCID: PMC7789102 DOI: 10.3892/mmr.2020.11789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 10/27/2020] [Indexed: 11/30/2022] Open
Abstract
JNK serves critical roles in numerous types of inflammation- and oxidative stress-induced disease, including acute lung injury (ALI). JNK-IN-8 is the first irreversible JNK inhibitor that has been described. However, whether JNK-IN-8 can prevent lipopolysaccharide (LPS)-induced ALI by inhibiting JNK activation and its downstream signaling is poorly understood. The objective of the present study was to investigate the specific therapeutic effects of JNK-IN-8 on LPS-induced ALI and the molecular mechanisms involved. JNK-IN-8 attenuated myeloperoxidase activity, malondialdehyde and superoxide dismutase content and the lung wet/dry ratio, and improved the survival rate following lethal injection of LPS. Additionally, JNK-IN-8 decreased bronchoalveolar lavage fluid protein levels, lactate dehydrogenase activity, neutrophil infiltration and the number of macrophages (as demonstrated by flow cytometry), as well as the production of TNF-α, IL-6 and IL-1β (as evaluated via ELISA). In addition, reverse transcription-quantitative PCR and ELISA showed that JNK-IN-8 attenuated LPS-induced inflammatory cytokine production and oxidative stress in primary murine peritoneal macrophages and RAW264.7 cells in vitro. Furthermore, the present study demonstrated that the JNK/NF-κB signaling pathway was involved in the therapeutic effect of JNK-IN-8 against LPS-induced injury both in vivo and in vitro. In conclusion, these findings indicated that JNK-IN-8 had a therapeutic effect on LPS-induced ALI in mice. The mechanism may be associated with inhibition of the JNK/NF-κB signaling pathway. JNK-IN-8 may be a potential therapeutic agent for the treatment of ALI.
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Affiliation(s)
- Jingxian Du
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Gaojian Wang
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310020, P.R. China
| | - Huanyu Luo
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310020, P.R. China
| | - Na Liu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310020, P.R. China
| | - Junran Xie
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
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Zheng Q, Liu Z, Shen H, Hu X, Zhao M. Protective effect of toll-interacting protein overexpression against paraquat-induced lung injury in mice and A549 cells through inhibiting oxidative stress, inflammation, and NF-κB signaling pathway. Respir Physiol Neurobiol 2020; 286:103600. [PMID: 33333238 DOI: 10.1016/j.resp.2020.103600] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/20/2020] [Accepted: 12/10/2020] [Indexed: 10/22/2022]
Abstract
Toll-interacting protein (Tollip) is a pivotal negative regulator of inflammatory response. In the present study, the effects of Tollip overexpression on paraquat (PQ)-induced lung injury were explored through in vivo and in vitro investigations. Upon stimulation with PQ in mice, the expression of Tollip was down-regulated. Histopathological analysis revealed that the overexpression of Tollip significantly decreased inflammatory cell infiltration. Similarly, the levels of myeloperoxidase (MPO) and interleukin-1β (IL-1β) were lowered by Tollip overexpression in PQ-administrated mice. Besides, the overexpression of Tollip reduced reactive oxygen species (ROS) generation and malondialdehyde (MDA) level but enhanced superoxide dismutase (SOD) activity in PQ-treated A549 cells. Meanwhile, Tollip overexpression lowered the level of IL-1β and decreased the protein expressions of p-p65 in the cytoplasm and nuclear p65. Importantly, inhibition of NF-κB signaling pathway probably by decreasing NF-κB p65-DNA binding activity was induced by Tollip overexpression. Taken together, Tollip overexpression attenuated PQ-initiated lung injury possibly via reduction of oxidative stress and inflammation and suppression of NF-κB signaling pathway activation, which provided some novel ideas for the treatment of lung damage mediated by PQ.
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Affiliation(s)
- Qiang Zheng
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning Province, PR China
| | - Zhenning Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning Province, PR China
| | - Haitao Shen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning Province, PR China
| | - Xiao Hu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning Province, PR China
| | - Min Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning Province, PR China.
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Wang N, Li Y, Wang X, Ma Z, Wang Y, Zhang C, Yuan Y, Zhao M. Inhibition of TBK1 by amlexanox attenuates paraquat-induced acute lung injury. Toxicology 2020; 443:152555. [DOI: 10.1016/j.tox.2020.152555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/24/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022]
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22
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Yang SC, Tsai YF, Pan YL, Hwang TL. Understanding the role of neutrophils in acute respiratory distress syndrome. Biomed J 2020; 44:439-446. [PMID: 33087299 PMCID: PMC7481802 DOI: 10.1016/j.bj.2020.09.001] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/06/2020] [Accepted: 09/08/2020] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is difficult to treat and is associated with a high mortality rate. The most severe form of coronavirus disease 2019 (COVID-19) also leads to life-threatening ARDS. Neutrophil counts are positively correlated with disease severity in ARDS. Neutrophil activation not only plays a significant role in immune defense against infections, but also causes tissue damage and leads to inflammatory diseases. Activated neutrophils rapidly migrate to inflamed lung tissue, releasing toxic granular contents and generating neutrophil extracellular traps. In the last few decades, it has become apparent that neutrophils occupy a central role in ARDS pathology. In this review, we summarize the neutrophil inflammatory responses and their relationships to ARDS. According to the current literature, understanding the function of neutrophils may be helpful in the treatment of ARDS.
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Affiliation(s)
- Shun-Chin Yang
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan; Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yung-Fong Tsai
- Department of Anesthesiology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yen-Lin Pan
- Department of Pharmacy, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan.
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23
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Dou X, Huang H, Jiang L, Zhu G, Jin H, Jiao N, Zhang L, Liu Z, Zhang L. Rational modification, synthesis and biological evaluation of 3,4-dihydroquinoxalin-2(1H)-one derivatives as potent and selective c-Jun N-terminal kinase 3 (JNK3) inhibitors. Eur J Med Chem 2020; 201:112445. [PMID: 32603981 DOI: 10.1016/j.ejmech.2020.112445] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/15/2020] [Accepted: 05/07/2020] [Indexed: 12/24/2022]
Abstract
The c-Jun N-terminal kinase 3 (JNK3) plays key roles in a wide range of diseases, including neurodegeneration diseases, inflammation diseases, cancers, cardiovascular diseases, and metabolic disorders. Previously, we have identified a lead compound, (Z)-3-(2-(naphthalen-1-yl)-2-oxoethylidene)-3,4-dihydroquinoxalin-2(1H)-one (J46), which contains a 3,4-dihydroquinoxalin-2(1H)-one core structure as a key fragment to inhibit JNK3. However, compound J46 displayed high DDR1 and EGFR (T790M, L858R) inhibition and poor physicochemical properties, especially clogD and water-solubility, in its biological studies. Herein, we optimized compound J46 by structure-based drug design and exploiting the selectivity and physicochemical properties of various warhead groups to obtain compound J46-37, which not only exhibited a potent inhibition against JNK3 but also showed more than 50-fold potency better than DDR1 and EGFR (T790M, L858R). Furthermore, the selectivity and structure-activity relationship of novel synthesized 3,4-dihydroquinoxalin-2(1H)-one derivatives were analyzed by molecular docking and molecular dynamics simulation. Overall, compound J46-37, as a highly selective inhibitor of JNK3 with well physicochemical properties, is worth developing as therapies for the treatment of diseases related to JNK3.
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Affiliation(s)
- Xiaodong Dou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Huixia Huang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Lan Jiang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Guiwang Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Hongwei Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Lihe Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
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Fu Y, Yan M, Xie C, Hu J, Zeng X, Hu Q. Polydatin relieves paraquat-induced human MRC-5 fibroblast injury through inhibiting the activation of the NLRP3 inflammasome. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:765. [PMID: 32647690 PMCID: PMC7333108 DOI: 10.21037/atm-20-4570] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Paraquat (PQ) is a herbicide that is highly toxic to the lungs and kidneys. When it enters the body, it will disrupt the balance of the microenvironment in the body, induce a large number of inflammatory factors and cause cell damage. Polydatin (PD), resveratrol glycoside, has multiple pharmacological effects. However, the protective effect of PD on human embryo lung fibroblast damage caused by PQ poisoning has not been reported. The purpose of this study was to investigate the regulatory effect of PD on human embryo lung fibroblast damage caused by PQ poisoning. Method The optimal experimental concentration of PQ for human embryonic lung fibroblast MRC-5 was 100 µmol/L, and then the cells of 100 µmol/L PQ group were treated with different concentrations of PD for 24 h. MTT assay to detect MRC-5 cell viability and flow cytometry to detect apoptosis. The corresponding kit was used to detect the contents of glutathione peroxidase (GSH-PX), malondialdehyde (MDA) and superoxide dismutase (SOD). Enzyme-linked immunosorbent assay (ELISA) to detect the levels of related inflammatory factors tumor necrosis factor alpha (TNF-α), transforming growth factor beta (TGF-β), interleukin 1 beta (IL-1β), and interleukin 6 (IL-6). Western blot detection of NLRP3 inflammatory body activation-related protein expression. Results Compared with the PQ group, cell activity, GSH-Px content, and SOD content in PD intervention group were significantly increased, while apoptosis, MDA content, inflammatory factor level, and activation-related proteins of the NLRP3 inflammasome were significantly reduced and were dose-dependent. Conclusions PD can relieve PQ-induced human MRC-5 fibroblasts injury by reducing the inflammatory response, improving the antioxidant stress capacity, and inhibiting the activation of the NLRP3 inflammasome.
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Affiliation(s)
- Yue Fu
- Department of General Medicine, Foshan First People's Hospital, Foshan, China.,Department of Emergency, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
| | - Mei Yan
- Department of General Medicine, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
| | - Chunming Xie
- Department of Emergency, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
| | - Jinlun Hu
- Department of General Medicine, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
| | - Xiangxia Zeng
- Department of General Medicine, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
| | - Qiaohua Hu
- Department of Emergency, Foshan First People's Hospital, Foshan, China.,The Poison Treatment Centre of Foshan, Foshan, China
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25
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Tan J, Gao W, Yang W, Zeng X, Wang L, Cui X. Isoform-specific functions of c-Jun N-terminal kinase 1 and 2 in lung ischemia-reperfusion injury through the c-Jun/activator protein-1 pathway. J Thorac Cardiovasc Surg 2020; 162:e143-e156. [PMID: 32414595 DOI: 10.1016/j.jtcvs.2020.03.083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND c-Jun N-terminal kinase 1 (JNK1) and JNK2 regulate distinct pathological processes in lung diseases. Here we discriminated the respective roles of these kinases in lung transplantation-induced ischemia-reperfusion injury (IRI). METHODS Rat pulmonary microvascular endothelial cells were transfected with JNK1 small-interfering RNA (siRNA) and JNK2 siRNA and then subjected to in vitro IRI. For the isoform confirmed to aggravate IRI, the delivery of short-hairpin RNA (shRNA) plasmid was performed by intratracheal administration 48 hours before transplantation into donor rats. After a 3-hour reperfusion, the samples were collected. RESULTS JNK1 siRNA decreased but JNK2 siRNA increased JNK phosphorylation and activity, phosphorylated and total c-Jun, and activator protein-1 activity. Although JNK1 siRNA decreased apoptosis and the levels of malondialdehyde, interleukin (IL)-1, IL-6, and tumor necrosis factor (TNF-α), it increased the levels of superoxide dismutase, S-phase percentage, and cyclin D1; JNK2 siRNA had a converse effect. JNK1 siRNA decreased the level of lactate dehydrogenase and increased the levels of VE-cadherin, nitric oxide, phosphorylated nitric oxide synthase, and cell viability; JNK2 si RNA had a converse effect. Compared with the control group, the JNK1 shRNA group exhibited a higher lung oxygenation index and lower lung apoptosis index, injury score, wet weight:dry weight ratio, and levels of IL-1, IL-6, and TNF-α. CONCLUSIONS JNK1 aggravated, but JNK2 alleviated, IRI through differential regulation of the JNK1 pathway in in vitro ischemia-reperfusion. JNK1 silence attenuated lung graft dysfunction by inhibiting inflammation and apoptosis. These findings provide a theoretical basis for devising therapeutic strategies against IRI after lung transplantation.
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Affiliation(s)
- Jing Tan
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Wei Gao
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Wanchao Yang
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xianzhang Zeng
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Linlin Wang
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Xiaoguang Cui
- Department of Anesthesiology, Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine, Second Affiliated Hospital, Harbin Medical University, Harbin, China; Department of Anesthesiology, First Affiliated Hospital, Hainan Medical University, Hainan, China.
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26
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Yu X, Chen D, Wang L, Li J, Khan K, Chen H, Liang Y, Luo H, Qiu C. Wogonoside inhibits inflammatory cytokine production in lipopolysaccharide-stimulated macrophage by suppressing the activation of the JNK/c-Jun signaling pathway. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:532. [PMID: 32411755 PMCID: PMC7214906 DOI: 10.21037/atm.2020.04.22] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background Mediated by innate immune cells, inflammation is an underlying presence in the pathogenesis of numerous pulmonary diseases. Macrophages play a critical role in mediating the initial response to infection in the lungs. When there is excessive activation of macrophages, hyper-production of inflammatory factors occurs, with inflammation as the ultimate result. Wogonoside, a bioactive flavonoid glycoside, has been reported to alleviate pulmonary inflammation. However, the mechanism underlying the anti-inflammatory effect of wogonoside has not yet been clarified. Methods The productions of nitric oxide (NO) and reactive oxygen species (ROS) were determined using a Griess reagent kit and a DAF-FM DA fluorescent probe, respectively. Moreover, the mRNA levels of inflammatory factors were quantified by qPCR, and the binding ability of c-Jun to promoters of inflammatory factors was performed by ChIP assay. Western blot was employed to detect the protein expression of inflammatory factors and signaling pathway. Results In this study, we found that pre-treatment with wogonoside dramatically suppressed lipopolysaccharide (LPS)-induced increase in the protein and mRNA levels of inflammatory factors in macrophages, such as cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and IL-6. Furthermore, wogonoside profoundly reduced the increase in NO and ROS production and significantly blocked phosphorylation of JNK in LPS-stimulated macrophages. As revealed by Western blot and qPCR analysis, wogonoside mediated the JNK-dependent inhibitory effect. Compared with wogonoside alone, a combination of wogonoside and JNK inhibitor SP600125 provided no extra benefit in suppressing the protein expression and mRNA levels of inflammatory factors in LPS-stimulated macrophages. Additionally, ChIP analysis demonstrated wogonoside to remarkably reduce c-Jun enrichment in COX-2, iNOS, IL-1β, TNF-α, and IL-6 promoters. Conclusions Collectively, our findings showed that wogonoside notably suppresses LPS-stimulated production of inflammatory factors by repressing the activation of the JNK/c-Jun signaling pathway in macrophages. This suggests that wogonoside could serve as a promising therapeutic agent for pulmonary diseases related to macrophage inflammation.
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Affiliation(s)
- Xiu Yu
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China.,Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Dandan Chen
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
| | - Lingwei Wang
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
| | - Jie Li
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
| | - Khalid Khan
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China.,Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Haihui Chen
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
| | - Yutian Liang
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
| | - Huanmin Luo
- Department of Pharmacology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Chen Qiu
- Department of Respiratory and Critical Care Medicine, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen Institute of Respiratory Diseases, Shenzhen 518020, China
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Sun DZ, Song CQ, Xu YM, Dong XS. Role of the MAPK pathway in human lung epithelial-like A549 cells apoptosis induced by paraquat. Genet Mol Biol 2020; 43:e20190137. [PMID: 32251495 PMCID: PMC7198013 DOI: 10.1590/1678-4685-gmb-2019-0137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 01/07/2020] [Indexed: 12/18/2022] Open
Abstract
This study aims to investigate the value of mitogen-activated protein kinases
(MAPKs) for paraquat (PQ)-induced apoptosis in human lung epithelial-like A549
cells and the specific mechanism. A549 cell apoptosis were induced by PQ. These
cells were divided into six groups: control group (cells were cultured in
RPMI-1640 medium); SP600125 group (cells were preconditioned with SP600125);
SB203580 group (cells were preconditioned with SB203580); PQ group (cells were
treated with PQ); SP600125+PQ group (cells were preconditioned with SP600125
following PQ); SB203580+PQ group (cells were preconditioned with SB203580
following PQ). The cell survival rate, apoptosis rate, and activities of
caspase-3 and -9 were detected. When compared with the control group, both
SP600125 and SB203580 groups had no significant difference in the detected
indicators. When compared with PQ group, the cells in both SP600125+PQ group and
SB203580+PQ group had significantly increased viability and level of
anti-apoptotic protein Bcl-2; and had decreased apoptotic rates, decreased
levels of caspase-3 and -9, and decreased level of pro-apoptotic protein Bax.
The ratio of p-JNK/JNK protein expression in the SP600125+PQ group significantly
decreased, while the ratio of the p-P38/P38 protein expression in the
SB203580+PQ group decreased. PQ induced A549 cell apoptosis through the MAPKs
pathway.
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Affiliation(s)
- Da-Zhuang Sun
- Department of Emergency, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Chun-Qing Song
- Department of Emergency, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Yong-Min Xu
- Department of Emergency, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Xue-Song Dong
- Department of Emergency, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
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Kanai T, Kondo N, Okada M, Sano H, Okumura G, Kijima Y, Ogose A, Kawashima H, Endo N. The JNK pathway represents a novel target in the treatment of rheumatoid arthritis through the suppression of MMP-3. J Orthop Surg Res 2020; 15:87. [PMID: 32131874 PMCID: PMC7371465 DOI: 10.1186/s13018-020-01595-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 02/13/2020] [Indexed: 01/27/2023] Open
Abstract
Background and aim The pathophysiology of rheumatoid arthritis (RA) is characterized by excess production of pro-inflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) by neutrophils and macrophages in synovium. Additionally, these cytokines promote the production of reactive oxygen species (ROS), and increased production of matrix metalloproteinases (MMPs), including MMP-3, in synoviocytes that result in joint destruction. There is limited information on how proteolytic enzymes such as MMP-3 can be regulated. We evaluated the effect of the antioxidant N-acetylcysteine (NAC) on RA and identified the relationship between the c-Jun N terminal kinase (JNK) pathway and MMP-3. We hypothesized that elucidating this relationship would lead to novel therapeutic approaches to RA treatment and management. Methods We investigated the effect of administering a low dose (1000 μM or less) of an antioxidant (NAC) to human rheumatoid fibroblast-like synoviocytes (MH7A cells). We also investigated the response of antioxidant genes such as nuclear factor erythroid -derived 2-related factor 2 (Nrf2) and Sequestosome 1 (p62). The influence of MMP-3 expression on the JNK pathway leading to joint destruction and the mechanisms underlying this relationship were investigated through primary dispersion culture cells collected from the synovial membranes of RA patients, consisting of rheumatoid arthritis-fibroblast-like synoviocytes (RA-FLS). Results Low-dose NAC (1000 μM) increased the expression of Nrf2 and phospho-p62 in MH7A cells, activating antioxidant genes, suppressing the expression of MMP-3, and inhibiting the phosphorylation of JNK. ROS, MMP-3 expression, and IL-6 was suppressed by administering 30 μM of SP600125 (a JNK inhibitor) in MH7A cells. Furthermore, the administration of SP600125 (30 μM) to RA-FLS suppressed MMP-3. Conclusions We demonstrated the existence of an MMP-3 suppression mechanism that utilizes the JNK pathway in RA-FLS. We consider that the JNK pathway could be a target for future RA therapies.
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Affiliation(s)
- Tomotake Kanai
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
| | - Naoki Kondo
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan.
| | - Masayasu Okada
- Department of Neurosurgery, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Niigata, Japan
| | - Hiroshige Sano
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
| | - Go Okumura
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
| | - Yasufumi Kijima
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
| | - Akira Ogose
- Department of Orthopedic Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Minami-Uonuma, Niigata, Japan
| | - Hiroyuki Kawashima
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
| | - Naoto Endo
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Niigata, Japan
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Zhang X, Jiang J, Chen Z, Cao M. Silibinin inhibited autophagy and mitochondrial apoptosis in pancreatic carcinoma by activating JNK/SAPK signaling. Pathol Res Pract 2019; 215:152530. [PMID: 31351801 DOI: 10.1016/j.prp.2019.152530] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/12/2019] [Accepted: 07/05/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous investigation have indicated Silibinin induces apoptosis and JNK/SAPK in human pancreatic cancer cells. This study aims to evaluate the further mechanism of Silibinin in pancreatic cancer treatment. MATERIALS AND METHODS Human pancreatic cancer cell lines SW1990 was treated with Silibinin and/or JNK/SAPK inhibitor SP600125 followed by measurement of cell viability, apoptosis, autophagy, ROS and ATP, and western blotting. RESULTS Silibinin promoted cell viability and promoted cell apoptosis. The expression of ROS and ATP associated with mitochondrial function was also promoted by the treatment of silibinin. Silibinin also promoted autophagy in pancreatic cancer cells. All these biological effects of Silibinin can be reversed by JNK/SAPK inhibitor. CONCLUSIONS The biological effects regulated by Silibinin can be mediated by JNK/SAPK signaling. This provides a solid theoretical basis for the role of Silibinin in the treatment of pancreatic cancer.
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Affiliation(s)
- Xiaokai Zhang
- Department of General Surgery, The First People's Hospital of Nanyang City, Nanyang, Henan 473000, China.
| | - Jianwei Jiang
- Department of Biochemistry, Medical College, Jinan University, Guangzhou, Guangdong 510630, China
| | - Zhiwei Chen
- Department of General Surgery, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong 510630, China
| | - Mingrong Cao
- Department of General Surgery, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong 510630, China.
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Cui S, Nian Q, Chen G, Wang X, Zhang J, Qiu J, Zhang Z. Ghrelin ameliorates A549 cell apoptosis caused by paraquat via p38-MAPK regulated mitochondrial apoptotic pathway. Toxicology 2019; 426:152267. [PMID: 31381934 DOI: 10.1016/j.tox.2019.152267] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 07/26/2019] [Accepted: 08/01/2019] [Indexed: 11/19/2022]
Abstract
Paraquat has relatively strong detrimental effects on humans and animals and can cause acute lung injury with high mortality. Ghrelin is a brain-gut peptide which plays important roles in regulating various physiological processes. This study investigated whether ghrelin could inhibit paraquat-induced lung injuries and attempted to elucidate the possible molecular mechanisms. A549 cells were preincubated with different concentrations of ghrelin and then treated with 200 μM of PQ for 24 h. Then cell survival, apoptosis, cellular oxidative stress and lipid peroxidation of A549 cells were detected after different treatments. Subsequently, we analyzed the mitochondrial membrane potential (ΔΨm) and measured caspase-3 activation in A549 cells. In addition, we investigated the activation of the MAPKs pathway and the function of p38-MAPK within mitochondrial apoptosis. Our study indicated that ghrelin administration improved cell viability and reduced apoptosis of PQ-treated A549 cells dose-dependently. Ghrelin treatment reduced the elevation of ROS and MDA, while improved GSH content in A549 cells after paraquat exposure. Moreover, we found that ghrelin dose-dependently increased ΔΨm and decreased caspase-3 activity. The phosphorylated p38 MAPK and JNK levels elevated following PQ exposure, while the phosphorylation of p38 MAPK decreased following ghrelin pretreatment. p38 MAPK siRNA or SB203580 pretreatment ameliorated PQ-caused cell injury and apoptosis related signals, however, the intracellular ROS production was not affected. N-Acetylcysteine (NAC), a classic antioxidant pretreatment decreased the phosphorylated p38 MAPK level and intracellular ROS production, alleviated cell injury, and inhibited apoptosis. The results showed that p38-MAPK pathway plays an important role in PQ-caused alveolar epithelial cell insult, and ghrelin might attenuate PQ-induced cell injury by inhibiting ROS-induced p38-MAPK modulated mitochondrial apoptotic pathway.
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Affiliation(s)
- Shuqing Cui
- Standardized Residency Training Center, Binzhou Medical University Hospital, Binzhou 256603, China
| | - Qing Nian
- Department of Emergency, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Gang Chen
- Department of Vascular Intervention, Binzhou Medical University Hospital, Binzhou 256603, China
| | - Xingyong Wang
- Department of Emergency, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Jinying Zhang
- Department of Emergency, Binzhou Medical University Hospital, Binzhou 256603, China
| | - Jianqing Qiu
- Department of Emergency, Binzhou Medical University Hospital, Binzhou 256603, China.
| | - Zhiqiang Zhang
- Department of Emergency, Binzhou Medical University Hospital, Binzhou 256603, China.
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Dou X, Huang H, Li Y, Jiang L, Wang Y, Jin H, Jiao N, Zhang L, Zhang L, Liu Z. Multistage Screening Reveals 3-Substituted Indolin-2-one Derivatives as Novel and Isoform-Selective c-Jun N-terminal Kinase 3 (JNK3) Inhibitors: Implications to Drug Discovery for Potential Treatment of Neurodegenerative Diseases. J Med Chem 2019; 62:6645-6664. [DOI: 10.1021/acs.jmedchem.9b00537] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiaodong Dou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Huixia Huang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yibo Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Lan Jiang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yanxing Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Hongwei Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Lihe Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Zhang L, Li Q, Liu W, Liu Z, Shen H, Zhao M. Mesenchymal Stem Cells Alleviate Acute Lung Injury and Inflammatory Responses Induced by Paraquat Poisoning. Med Sci Monit 2019; 25:2623-2632. [PMID: 30967525 PMCID: PMC6474293 DOI: 10.12659/msm.915804] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) show anti-oxidative and anti-inflammatory effects that have prompted further research into their potential applications in treating paraquat (PQ) poisoning cases in emergency rooms. We assessed the protective effects, underlying mechanisms, and secondary inflammatory responses of MSCs on PQ-induced acute lung injury. Material/Methods Sprague-Dawley rats were injected intraperitoneally with PQ (20 μg per gram of body weight). MSCs were injected through the caudal vein 1 h after PQ treatment. The severity of lung injury and oxidative stress and levels of inflammatory mediators were examined with and without MSC grafting. Expression levels of TLR4, NF-κB, p65, Nrf2, HO-1, and activated caspase-3 protein were determined by Western blotting. Results Administration of MSCs significantly decreased the levels of TNF-α, IL-1β, and IL-6 and polymorphonuclear neutrophil (PMN) count in the bronchoalveolar lavage fluid (BALF) of rats with PQ-induced ALI. In addition, MSC also effectively reduced the wet-to-dry lung weight ratio, lung injury score, and the levels of MDA and 8-OHdG. Conversely, MSC increased SOD and GSH-PX activity in the lung tissue. Moreover, MSC significantly upregulated HO-1, Nrf-2 protein expression in the lung tissue. In contrast, the levels of TLR4, NF-κB p65 and activated caspase-3 protein were decreased in MSC-treated rats (P<0.05). Conclusions Treatment with MSCs overexpressed Nrf2 gene and activated downstream antioxidant HO-1, leading to inhibit oxidative stress, cell apoptosis and inflammatory response in lung tissue, thereby significantly improving PQ-induced acute lung injury in rats.
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Affiliation(s)
- Lichun Zhang
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China (mainland)
| | - Qiuhe Li
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China (mainland)
| | - Wei Liu
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China (mainland)
| | - Zhenning Liu
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China (mainland)
| | - Haitao Shen
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, shenyang, China (mainland)
| | - Min Zhao
- Emergency Department, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning, China (mainland)
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Zhang LC, Wang Y, Liu W, Zhang XM, Fan M, Zhao M. Protective effects of SOD2 overexpression in human umbilical cord mesenchymal stem cells on lung injury induced by acute paraquat poisoning in rats. Life Sci 2018; 214:11-21. [PMID: 30321544 DOI: 10.1016/j.lfs.2018.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/10/2018] [Accepted: 10/11/2018] [Indexed: 12/19/2022]
Abstract
AIMS To study the protective effects and mechanisms of human umbilical cord mesenchymal stem cells (hUCMSCs) and overexpression of antioxidant gene SOD2 on lung injury by establishing a rat model of paraquat (PQ)-induced lung injury. MAIN METHODS The hUCMSCs cell line overexpressed SOD2 was established. After intraperitoneal injection of PQ solution (24 mg/kg) 3 h later, the different groups of hUCMSCs cell lines were injected through the tail veins of rats. Bronchoalveolar lavage fluid (BALF) was obtained to determine the protein level of inflammatory cytokines. Lung tissues were collected to test the wet/dry weight ratios (W/D), oxidative stress index and lung injury scores. Western blotting was used to detect SOD1, SOD2, HO-1, Nrf2, NF-κBp65 subunit, and cleaved caspase-3. KEY FINDINGS After treatment with cells built on the basis of hUCMSCs, the protein levels of TNF-α, IL-8, and ICAM-1 in BALF decreased, and meanwhile in lung tissues, MDA content was reduced, GSH-Px activity was elevated, and lung W/D ratio decreased. Additionally, protein expression of NF-κB p65 subunit and activated caspase-3 in lung tissues was down-regulated, whereas expression of SOD1, SOD2, HO-1, and Nrf-2 were up-regulated. The results of HE staining showed that lung injury was significantly alleviated in the hUCMSC treated group. It is noticeable that hUCMSCs and SOD2-overexpressed hUCMSCs effectively reduced PQ-induced lung injury in rats, and moreover, hUCMSCs overexpressed SOD2 were more effective compared with hUCMSCs only. SIGNIFICANCE Evaluation of the efficacy and analysis of mechanism in the treatment of PQ induced ALI by appliance of SOD2-overexpressed hUCMSCs will provide the proof from bench to bedside.
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Affiliation(s)
- Li-Chun Zhang
- Emergency Department of Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning Province 110004, China.
| | - Yu Wang
- Emergency Department of Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning Province 110004, China
| | - Wei Liu
- Emergency Department of Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning Province 110004, China
| | - Xue-Min Zhang
- Eugenom Inc., Rm 310 No. 226 North Nanjing Street, Heping District, Shenyang, Liaoning Province 110001, China
| | - Miao Fan
- Eugenom Inc., Rm 310 No. 226 North Nanjing Street, Heping District, Shenyang, Liaoning Province 110001, China
| | - Min Zhao
- Emergency Department of Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, Liaoning Province 110004, China
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Qiao Y, Tian X, Men L, Li S, Chen Y, Xue M, Hu Y, Zhou P, Long G, Shi Y, Liu R, Liu Y, Qi Z, Cui Y, Shen Y. Spleen tyrosine kinase promotes NLR family pyrin domain containing 3 inflammasome‑mediated IL‑1β secretion via c‑Jun N‑terminal kinase activation and cell apoptosis during diabetic nephropathy. Mol Med Rep 2018; 18:1995-2008. [PMID: 29901140 PMCID: PMC6072182 DOI: 10.3892/mmr.2018.9164] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 05/18/2018] [Indexed: 12/31/2022] Open
Abstract
Diabetic nephropathy (DN) is a serious complication of diabetes and can cause an increased mortality risk. It was previously reported that NLR family pyrin domain containing 3 (NLRP3) inflammasome is involved in the pathogenesis of diabetes. However, the underlying mechanism is not clearly understood. In the present study, the effects of spleen tyrosine kinase (Syk) and c-Jun N-terminal kinase (JNK) on the NLRP3 inflammasome were examined in vivo and in vitro. Sprague-Dawley rats were injected intraperitoneally with streptozotocin (65 mg/kg) to induce diabetes. HK2 cells and rat glomerular mesangial cells (RGMCs) were examined to detect the expression of JNK and NLRP3 inflammasome-associated proteins following treatment with a Syk inhibitor or Syk-small interfering (si)RNA in a high glucose condition. In the present study, it was revealed that the protein and mRNA expression levels of NLRP3 inflammasome-associated molecules and the downstream mature interleukin (IL)-1β were upregulated in vivo and in vitro. The Syk inhibitor and Syk-siRNA suppressed high glucose-induced JNK activation, and subsequently downregulated the activation of the NLRP3 inflammasome and mature IL-1β in HK2 cells and RGMCs. Furthermore, high glucose-induced apoptosis of HK2 cells was reduced by the Syk inhibitor BAY61-3606. Therefore, the present results determined that high glucose-induced activation of the NLRP3 inflammasome is mediated by Syk/JNK activation, which subsequently increased the protein expression level of IL-1β and mature IL-1β. The present study identified that the Syk/JNK/NLRP3 signaling pathway may serve a vital role in the pathogenesis of DN.
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Affiliation(s)
- Yingchun Qiao
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Xixi Tian
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Li Men
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Shengyu Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Yufeng Chen
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Meiting Xue
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Yahui Hu
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Pengfei Zhou
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Guangfeng Long
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Yue Shi
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Ruiqing Liu
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Yunde Liu
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Zhi Qi
- Department of Histology and Embryology, School of Medicine, Nankai University, Tianjin 300071, P.R. China
| | - Yujie Cui
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
| | - Yanna Shen
- School of Medical Laboratory, Tianjin Medical University, Tianjin 300203, P.R. China
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Sullivan AC, Pangloli P, Dia VP. Kafirin from Sorghum bicolor inhibition of inflammation in THP-1 human macrophages is associated with reduction of intracellular reactive oxygen species. Food Chem Toxicol 2017; 111:503-510. [PMID: 29217270 DOI: 10.1016/j.fct.2017.12.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 11/21/2017] [Accepted: 12/01/2017] [Indexed: 01/16/2023]
Abstract
Aberrant inflammation as a result of activation of the transmembrane protein Toll-like receptor 4 belonging to pattern recognition receptor and subsequent phosphorylation of signaling proteins facilitated by reactive oxygen species has been linked to a myriad of diseases. Sorghum is a drought-resistant cereal with health promoting properties associated with its biologically active substances such as kafirin. Kafirin is an alcohol soluble protein and accounts for as much as 70% of the total proteins in sorghum. The objective was to determine the effect of kafirin on lipopolysaccharide (LPS)-induced inflammation in THP-1 human macrophages. THP-1 human monocytic leukemia cells were differentiated into macrophages by phorbol-12-myristate 13-acetate followed by treatment of LPS with or without 50 μg/mL or 100 μg/mL concentrations of kafirin. Kafirin at 100 μg/mL reduced the production of pro-inflammatory cytokines IL-1β, IL-6 and TNF-α by 28.3%, 74.0%, and 81.4%, respectively. Kafirin reduced production of intracellular reactive oxygen species is associated with reduced phosphorylation of extracellular regulated kinase1/2 and c-JUN N-terminal kinase and nuclear translocation of p65 and c-JUN transcription factors. Our results showed for the first time the anti-inflammatory property of kafirin purified from sorghum in LPS-induced THP-1 human macrophages.
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Affiliation(s)
- Andrew C Sullivan
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, TN 37996, USA
| | - Philipus Pangloli
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, TN 37996, USA
| | - Vermont P Dia
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, TN 37996, USA.
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Gal Y, Mazor O, Falach R, Sapoznikov A, Kronman C, Sabo T. Treatments for Pulmonary Ricin Intoxication: Current Aspects and Future Prospects. Toxins (Basel) 2017; 9:E311. [PMID: 28972558 PMCID: PMC5666358 DOI: 10.3390/toxins9100311] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 09/26/2017] [Accepted: 09/29/2017] [Indexed: 12/13/2022] Open
Abstract
Ricin, a plant-derived toxin originating from the seeds of Ricinus communis (castor beans), is one of the most lethal toxins known, particularly if inhaled. Ricin is considered a potential biological threat agent due to its high availability and ease of production. The clinical manifestation of pulmonary ricin intoxication in animal models is closely related to acute respiratory distress syndrome (ARDS), which involves pulmonary proinflammatory cytokine upregulation, massive neutrophil infiltration and severe edema. Currently, the only post-exposure measure that is effective against pulmonary ricinosis at clinically relevant time-points following intoxication in pre-clinical studies is passive immunization with anti-ricin neutralizing antibodies. The efficacy of this antitoxin treatment depends on antibody affinity and the time of treatment initiation within a limited therapeutic time window. Small-molecule compounds that interfere directly with the toxin or inhibit its intracellular trafficking may also be beneficial against ricinosis. Another approach relies on the co-administration of antitoxin antibodies with immunomodulatory drugs, thereby neutralizing the toxin while attenuating lung injury. Immunomodulators and other pharmacological-based treatment options should be tailored according to the particular pathogenesis pathways of pulmonary ricinosis. This review focuses on the current treatment options for pulmonary ricin intoxication using anti-ricin antibodies, disease-modifying countermeasures, anti-ricin small molecules and their various combinations.
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Affiliation(s)
- Yoav Gal
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
| | - Ohad Mazor
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
| | - Reut Falach
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
| | - Anita Sapoznikov
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
| | - Chanoch Kronman
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
| | - Tamar Sabo
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness-Ziona 76100, Israel.
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