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Li J, Guo C, Liu Y, Han B, Lv Z, Jiang H, Li S, Zhang Z. Chronic arsenic exposure-provoked biotoxicity involved in liver-microbiota-gut axis disruption in chickens based on multi-omics technologies. J Adv Res 2024:S2090-1232(24)00032-8. [PMID: 38237767 DOI: 10.1016/j.jare.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 10/27/2023] [Accepted: 01/13/2024] [Indexed: 01/25/2024] Open
Abstract
INTRODUCTION Arsenic has been ranked as the most hazardous substance by the U.S. Agency for Toxic Substances and Disease Registry. Environmental arsenic exposure-evoked health risks have become a vital public health concern worldwide owing to the widespread existence of arsenic. Multi-omics is a revolutionary technique to data analysis providing an integrated view of bioinformation for comprehensively and systematically understanding the elaborate mechanism of diseases. OBJECTIVES This study aimed at uncovering the potential contribution of liver-microbiota-gut axis in chronic inorganic arsenic exposure-triggered biotoxicity in chickens based on multi-omics technologies. METHODS Forty Hy-Line W-80 laying hens were chronically exposed to sodium arsenite with a dose-dependent manner (administered with drinking water containing 10, 20, or 30 mg/L arsenic, respectively) for 42 d, followed by transcriptomics, serum non-targeted metabolome, and 16S ribosomal RNA gene sequencing accordingly. RESULTS Arsenic intervention induced a serious of chicken liver dysfunction, especially severe liver fibrosis, simultaneously altered ileal microbiota populations, impaired chicken intestinal barrier, further drove enterogenous lipopolysaccharides translocation via portal vein circulation aggravating liver damage. Furtherly, the injured liver disturbed bile acids (BAs) homoeostasis through strongly up-regulating the BAs synthesis key rate-limiting enzyme CYP7A1, inducing excessive serum total BAs accumulation, accompanied by the massive synthesis of primary BA-chenodeoxycholic acid. Moreover, the concentrations of secondary BAs-ursodeoxycholic acid and lithocholic acid were markedly repressed, which might involve in the repressed dehydroxylation of Ruminococcaceae and Lachnospiraceae families. Abnormal BAs metabolism in turn promoted intestinal injury, ultimately perpetuating pernicious circle in chickens. Notably, obvious depletion in the abundance of four profitable microbiota, Christensenellaceae, Ruminococcaceae, Muribaculaceae, and Faecalibacterium, were correlated tightly with this hepato-intestinal circulation process in chickens exposed to arsenic. CONCLUSION Our study demonstrates that chronic inorganic arsenic exposure evokes liver-microbiota-gut axis disruption in chickens and establishes a scientific basis for evaluating health risk induced by environmental pollutant arsenic.
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Affiliation(s)
- Jiayi Li
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Changming Guo
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yan Liu
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Biqi Han
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Zhanjun Lv
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Huijie Jiang
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Siyu Li
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China
| | - Zhigang Zhang
- College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China.
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Luo Y, Ge S, Chen Q, Lin S, He W, Zeng M. Overexpression of FoxM1 optimizes the therapeutic effect of bone marrow mesenchymal stem cells on acute respiratory distress syndrome. Stem Cell Res Ther 2023; 14:27. [PMID: 36788588 PMCID: PMC9926819 DOI: 10.1186/s13287-023-03240-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 01/17/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Injury of alveolar epithelial cells and capillary endothelial cells is crucial in the pathogenesis of acute lung injury/acute respiratory distress syndrome (ALI/ARDS). Mesenchymal stem cells (MSCs) are a promising cell source for ALI/ARDS treatment. Overexpression of Fork head box protein M1 (FoxM1) facilitates MSC differentiation into alveolar type II (AT II) cells in vitro. Moreover, FoxM1 has been shown to repair the endothelial barrier. Therefore, this study explored whether overexpression of FoxM1 promotes the therapeutic effect of bone marrow-derived MSCs (BMSCs) on ARDS by differentiation of BMSCs into AT II cells or a paracrine mechanism. METHODS A septic ALI model was established in mice by intraperitoneal administration of lipopolysaccharide. The protective effect of BMSCs-FoxM1 on ALI was explored by detecting pathological variations in the lung, total protein concentration in bronchoalveolar lavage fluid (BALF), wet/dry (W/D) lung weight ratio, oxidative stress levels, cytokine levels, and retention of BMSCs in the lung. In addition, we assessed whether FoxM1 overexpression promoted the therapeutic effect of BMSCs on ALI/ARDS by differentiating into AT II cells using SPC-/- mice. Furthermore, the protective effect of BMSCs-FoxM1 on lipopolysaccharide-induced endothelial cell (EC) injury was explored by detecting EC proliferation, apoptosis, scratch wounds, tube formation, permeability, and oxidative stress, and analyzing whether the Wnt/β-catenin pathway contributes to the regulatory mechanism in vitro using a pathway inhibitor. RESULTS Compared with BMSCs-Vector, treatment with BMSCs-FoxM1 significantly decreased the W/D lung weight ratio, total BALF protein level, lung injury score, oxidative stress, and cytokine levels. With the detected track of BMSCs-FoxM1, we observed a low residency rate and short duration of residency in the lung. Notably, SPC was not expressed in SPC-/- mice injected with BMSCs-FoxM1. Furthermore, BMSCs-FoxM1 enhanced EC proliferation, migration, and tube formation; inhibited EC apoptosis and inflammation; and maintained vascular integrity through activation of the Wnt/β-catenin pathway, which was partially reversed by XAV-939. CONCLUSION Overexpression of FoxM1 enhanced the therapeutic effect of BMSCs on ARDS, possibly through a paracrine mechanism rather than by promoting BMSC differentiation into AT II cells in vivo, and prevented LPS-induced EC barrier disruption partially through activating the Wnt/β-catenin signaling pathway in vitro.
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Affiliation(s)
- Yuling Luo
- grid.12981.330000 0001 2360 039XDepartment of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080 Guangdong China
| | - Shanhui Ge
- grid.12981.330000 0001 2360 039XDepartment of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080 Guangdong China
| | - Qingui Chen
- grid.12981.330000 0001 2360 039XDepartment of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080 Guangdong China
| | - Shan Lin
- grid.12981.330000 0001 2360 039XDepartment of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080 Guangdong China
| | - Wanmei He
- grid.12981.330000 0001 2360 039XDepartment of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080 Guangdong China
| | - Mian Zeng
- Department of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080, Guangdong, China.
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Kan W, Li Q, Li P, Ren L, Mu W, Lin L, Wen J, Ge F, Hou M, Hui S, He P, Liang L, Xu Y, Li X, Xu G, Xiao X, Bai Z. Glycyrrhiza uralensis polysaccharides ameliorate acute lung injury by inhibiting the activation of multiple inflammasomes. J Funct Foods 2023. [DOI: 10.1016/j.jff.2022.105386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Visfatin Amplifies Cardiac Inflammation and Aggravates Cardiac Injury via the NF-κB p65 Signaling Pathway in LPS-Treated Mice. Mediators Inflamm 2022; 2022:3306559. [PMID: 36262545 PMCID: PMC9576419 DOI: 10.1155/2022/3306559] [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: 07/19/2022] [Revised: 08/09/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022] Open
Abstract
Background Visfatin is an adipocytokine that has been demonstrated to be involved in cardiovascular diseases. This study aims at determining the role of visfatin in sepsis-induced cardiac injury and identify its possible mechanisms. Methods Dynamic changes in visfatin expression in mice with lipopolysaccharide- (LPS-) induced septicemia were measured. Additionally, mice were pretreated with visfatin and further administered LPS to observe the effects of visfatin on cardiac injury. Finally, septic mice were also pretreated with JSH-23 to investigate whether visfatin regulates cardiac injury via the NF-κB p65 pathway. Results Visfatin expression levels in both the heart and serum were increased in LPS-treated mice and peaked at 6 hours, and visfatin was derived from cardiac macrophages. In septic mice, pretreatment with visfatin reduced the survival rate, worsened cardiac dysfunction, and increased the expression of cardiac injury markers, including creatine kinase myocardial bound (CK-MB) and lactate dehydrogenase (LDH). Treatment with visfatin also increased the infiltration of CD3+ cells and F4/80+ cells, amplified the cardiac inflammatory response, and elevated myocardial cell apoptosis. Treatment with JSH-23 reversed the effects of visfatin in septic mice. Conclusions This study showed that visfatin amplifies the cardiac inflammatory response and aggravates cardiac injury through the p65 signaling pathway. Visfatin may be a clinical target for preventing cardiac injury in sepsis.
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Kuang ZS, Leng YX, Yang N, Li ZQ, Zong YN, Han DY, Li Y, He JD, Mi XN, Cong ZK, Zhu X, Wu CY, Guo XY. Inhibition of visfatin alleviates sepsis-induced intestinal damage by inhibiting Hippo signaling pathway. Inflamm Res 2022; 71:911-922. [PMID: 35731253 PMCID: PMC9307557 DOI: 10.1007/s00011-022-01593-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/12/2022] [Accepted: 05/20/2022] [Indexed: 01/11/2023] Open
Abstract
Background The aim of this study is to investigate role of Visfatin, one of the pro-inflammatory adipokines, in sepsis-induced intestinal injury and to clarify the potential mechanism. Methods C57BL/6 mice underwent cecal ligation and puncture (CLP) surgery to establish sepsis model in vivo. Intestinal epithelial cells were stimulated with LPS to mimic sepsis-induced intestinal injury in vitro. FK866 (the inhibitor of Visfatin) with or without XMU-MP-1 (the inhibitor of Hippo signaling) was applied for treatment. The expression levels of Visfatin, NF-κB and Hippo signaling pathways-related proteins were detected by western blot or immunohistochemistry. The intestinal cell apoptosis and intestinal injury were investigated by TUNEL staining and H&E staining, respectively. ELISA was used to determine the production of inflammatory cytokines. Results The expression of Visfatin increased in CLP mice. FK866 reduced intestinal pathological injury, inflammatory cytokines production, and intestinal cell apoptosis in sepsis mice. Meanwhile, FK866 affected NF-κB and Hippo signaling pathways. Additionally, the effects of FK866 on inflammatory response, apoptosis, Hippo signaling and NF-κB signaling were partly abolished by XMU-MP-1, the inhibitor of Hippo signaling. In vitro experiments also revealed that FK866 exhibited a protective role against LPS-induced inflammatory response and apoptosis in intestinal cells, as well as regulating NF-κB and Hippo signaling, whereas addition of XMU-MP-1 weakened the protective effects of FK866. Conclusion In short, this study demonstrated that inhibition of Visfatin might alleviate sepsis-induced intestinal injury through Hippo signaling pathway, supporting a further research on Visfatin as a therapeutic target.
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Affiliation(s)
- Zhong-Shen Kuang
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Yu-Xin Leng
- Department of Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Zheng-Qian Li
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Ya-Nan Zong
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | | | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Jin-Dan He
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Xing-Ning Mi
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China
| | - Zhu-Kai Cong
- Department of Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, China
| | - Xi Zhu
- Department of Critical Care Medicine, Peking University Third Hospital, Beijing, 100191, China
| | - Chang-Yi Wu
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China.
| | - Xiang-Yang Guo
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing, 100191, China.
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Zhang ZW, Ansari AR, Dong L, Niu XY, Yang WJ, Li HZ, Xu FL, Yang KL, Song H. Alterations in the expression level of visfatin in the lungs of piglets infected with PRRSV and its effect on PRRSV replication. Microb Pathog 2022; 164:105443. [PMID: 35150869 DOI: 10.1016/j.micpath.2022.105443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/22/2021] [Accepted: 02/07/2022] [Indexed: 10/19/2022]
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is a highly contagious disease caused by PRRS virus (PRRSV), characterized by sow reproductive failure and respiratory symptoms in pigs of all ages. PRRSV mainly causes severe lung damage by invading alveolar macrophages. Visfatin is closely related to acute lung injury, immune response and inflammation along with virus invasion to the host. Therefore, the current study was performed to clarify the relationship between visfatin and PRRSV infection. We used ternary piglets to construct a piglet model to explore the expression of visfatin and tight junction protein in lung injury induced by PRRSV infection, and then further studied the inhibition effect of visfatin on PRRSV replication by PRRSV infection of Marc-145 cells. Our results indicated that both PRRSV attenuated and virulent infections could damage the lung tissues, which could not only lead to severe inflammatory reaction (such as increased expression of TNF-α, TGF-β, IL-8 and IL-10) in lung tissues of piglets, but also brought about the sharp decrease of ZO-1 and Tricellulin expressions resulting in impaired alveolar epithelial barrier. Meanwhile, we found significantly up-regulated expression of visfatin in lungs and serum of pigs after PRRSV infection that were related to both the degree of lung injury and the virulence of PRRSV strain. Moreover, visfatin might inhibit the PRRSV infection to Marc-145 cells in time dependent fashion. Hence, the current investigation provides the novel information about the effect of visfatin and PRRSV co-culture on Marc-145 cells and the effect of visfatin on PRRSV proliferation at different time points.
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Affiliation(s)
- Zhe-Wei Zhang
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Abdur Rahman Ansari
- Section of Anatomy and Histology, Department of Basic Sciences, College of Veterinary & Animal Sciences (CVAS) Jhang; University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Ling Dong
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiao-Yu Niu
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wen-Jie Yang
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hui-Zhen Li
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Fen-Liang Xu
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ke-Li Yang
- Institute of Animal Husbandry and Veterinary Medicine, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Hui Song
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China.
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Anti-Inflammatory Effects of Sosiho-Tang, a Traditional Herbal Formula, on Acute Lung Injury in LPS-Sensitized Mice and -Raw 264.7 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6641689. [PMID: 33628305 PMCID: PMC7886507 DOI: 10.1155/2021/6641689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 11/28/2022]
Abstract
Acute lung injury (ALI) is a series of syndromes with persistent inflammation and abnormally increased vascular permeability. Sosiho-tang (SSHT), a traditional herbal formula consisting of a mixture of seven herbs, has been used to treat allergic reactions and chronic hepatitis disease in East Asia. In this study, we determined whether SSHT has an inhibitory effect against lipopolysaccharide- (LPS-) induced acute lung injury (ALI) in mice. 0.05, 0.55, and 5.55 mg/kg of SSHT were orally administered to C57BL/6J mice for 7 days prior to the administration of LPS. After 2 h of LPS sensitization, lung tissues were collected to confirm the lung histology and ALI-related inflammatory factors. SSHT ameliorated the LPS-induced alveolar hemorrhage, alveolar wall thickening, and the shrinkage of the alveolar spaces in the ALI mice model. Proinflammatory cytokines including IL-6, TNF-α, and IFN-γ in the lung tissue were significantly regulated in the SSHT-treated groups compared to the LPS only-treated group. Also, increases of IL-6 and TNF-α and decrease of IFN-γ expressions were dose-dependently modulated by SSHT treatment in LPS-induced raw 264.7 cells. Additionally, the translocation of NF-κB into nucleus and phosphorylation of mitogen-activated protein (MAP) kinase were significantly attenuated by the treatment of SSHT in LPS-sensitized ALI mice. SSHT showed anti-inflammatory activities by inhibiting proinflammatory cytokines and NF-κB signaling in LPS-induced ALI. This study demonstrates that SSHT has preventive effects on LPS-induced ALI by regulating inflammatory responses as an alternative for treating lung diseases.
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Qin X, Zhou Y, Wang Y, Wang Z, Wang Y, Chen J, Zhu L, Quan X, Liu Z, Zhang H, Jiang L, Dong H, Zhang Z. Preparation and Characterization of Protein-loaded PFC Nanoemulsions for the Treatment of Heart Diseases by Pulmonary Administration. Eur J Pharm Sci 2020; 158:105690. [PMID: 33359617 DOI: 10.1016/j.ejps.2020.105690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/30/2020] [Accepted: 12/20/2020] [Indexed: 01/26/2023]
Abstract
In the treatment of heart disease, strategies for the targeted delivery of protein therapeutics to the heart by inhalation are still immature. Perfluorocarbons (PFCs) are inert chemicals with good biocompatibility, and unique physico-chemical properties that have recently led to their applications in numerous fields. In this study, we combined the advantages of protein-phospholipid complexes and PFC emulsions and then synthesized protein-loaded PFC nanoemulsions (PNEs) to test whether, after inhalation, these nanoemulsions could deliver therapeutic proteins to the heart. After preparing protein-phospholipid complexes by lyophilization, we obtained PNEs by extrusion. The particle size and surface charge of PNEs were about 140 nm and -50 mV, respectively. In vitro results showed that the PNEs had a fine particle fraction of 35% and exhibited sustained protein release. Translocation studies were done using three types of pulmonary epithelial cells, and ~7% translocation was observed in the Calu-3 cell line. Further, they were easily absorbed by cells and had therapeutic effects in culture. In vivo results showed that the PNEs successfully delivered proteins to the myocardial tissue of rats and reduced ischemic myocardial injury caused by acute myocardial infarction (AMI). This study suggests that inhalation of PNEs is a new potential strategy to deliver proteins to cardiac tissues for treating heart diseases.
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Affiliation(s)
- Xichun Qin
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Yeqing Zhou
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Yuzhuo Wang
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Ziyao Wang
- Jiangsu Key laboratory of New Drug research and clinical Pharmacy, Xuzhou Medical University, China
| | - Yun Wang
- Jiangsu Key laboratory of New Drug research and clinical Pharmacy, Xuzhou Medical University, China
| | - Jiali Chen
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Lidong Zhu
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Xiaoyu Quan
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Zhiwei Liu
- Morphological Research Experiment Center, Xuzhou Medical University, China
| | - Hao Zhang
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China
| | - Liqun Jiang
- Jiangsu Key laboratory of New Drug research and clinical Pharmacy, Xuzhou Medical University, China.
| | - Hongyan Dong
- Morphological Research Experiment Center, Xuzhou Medical University, China.
| | - Zhongming Zhang
- Department of Thoracic Cardiovascular Surgery, Affiliated Hospital of Xuzhou Medical University, China.
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Li HZ, Xu FL, Ansari AR, Yang WJ, Zhang ZW, Dong L, Niu XY, Song H. Optimization and bioactivity verification of porcine recombinant visfatin with high expression and low endotoxin content using pig liver as template. Protein Expr Purif 2020; 178:105776. [PMID: 33065262 DOI: 10.1016/j.pep.2020.105776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 10/08/2020] [Accepted: 10/08/2020] [Indexed: 10/23/2022]
Abstract
In order to obtain the porcine recombinant visfatin protein with high expression and low endotoxin content, the current study aims to express and verify the biological activity of the purified porcine recombinant visfatin protein. Firstly, four different expression strains were successfully constructed. Then they were simultaneously induced at 37 °C for 4 h and 16 °C for 16 h. The results showed that Visfatin-pET28a-Transetta was the best strain with high protein expression and purity at 16 °C induction for 16 h. After that, endotoxin was reduced from the recombinant visfatin until the residual endotoxin was less than one endotoxin units per milliliter (EU/mL). Finally, the purified porcine recombinant visfatin protein was incubated with RAW264.7 cells. The results of cell counting kit-8 (CCK-8) showed the survival rate of the cells first increased and then decreased with the increase in visfatin concentration. When the concentration of visfatin was 700 ng/mL, the survival rate of the cells was the highest. Thereafter, control (PBS), Visfatin and Visfatin + PolymyxinB (Ploy.B) groups were incubated with the RAW264.7 cells for 6 h. Real-time quantitative polymerase chain reaction (RT-qPCR) and Enzyme Linked Immuno-Sorbent Assay (ELISA) results showed that, as compared to the control group, the expressions of interleukin (IL)-1β, tumor necrosis factor (TNF)-α and monocyte chemoattractant protein (MCP)-1 in Visfatin group were significantly increased (P < 0.05). However, there was no significant difference between the Visfatin and Visfatin + Poly.B groups, indicating that porcine recombinant visfatin protein promoted the inflammatory activity of RAW264.7 cells while the residual endotoxin did not play a role, suggesting biological activity of porcine recombinant visfatin protein.
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Affiliation(s)
- Hui Zhen Li
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Fen Liang Xu
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Abdur Rahman Ansari
- Section of Anatomy and Histology, Department of Basic Sciences, College of Veterinary and Animal Sciences (CVAS), Jhang, Pakistan; University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan.
| | - Wen Jie Yang
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhe Wei Zhang
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ling Dong
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiao Yu Niu
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hui Song
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China.
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Liu G, Lu Y, Shi L, Ren Y, Kong J, Zhang M, Chen M, Liu W. TLR4-MyD88 signaling pathway is responsible for acute lung inflammation induced by reclaimed water. JOURNAL OF HAZARDOUS MATERIALS 2020; 396:122586. [PMID: 32315938 DOI: 10.1016/j.jhazmat.2020.122586] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/28/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
Previous research found that inhalation exposure of reclaimed water could cause severe pulmonary inflammation, and the endotoxin was proposed to be the key risk factor. To further support this view, the toxic effects of different reclaimed water induced by acute inhalation exposure were compared between wildtype C57BL/6J and TLR4 signaling pathway defect mice. It was found that reclaimed water with high levels of endotoxin could induce strong inflammation in wildtype mice, but not in Tlr4-/- and MyD88-/- mutants. The mixed bacterial culture from the reclaimed water showed very weak response in wildtype mice and no response in TLR4-signaling pathway deficient mice, which further suggested that the cell-bound endotoxins contribute little in the inflammation induced by reclaimed water. In addition, conditional knockout of the Tlr4 gene in myeloid cells resulted in a significant reduction of sensitivity to the reclaimed water in mutants, which indicates that myeloid cells play the most important role in the defensive immune system against the pollutants in the water. In general, this study demonstrated that the TLR4-MyD88 signaling pathway is responsible for the acute lung inflammation induced by reclaimed water, which excludes the possibility of other signaling pathway dependent inflammation inducers in reclaimed water.
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Affiliation(s)
- Gang Liu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yun Lu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Liangliang Shi
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yunru Ren
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Jiayang Kong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Mengyu Zhang
- School of Life Science, Tsinghua University, Beijing, 100084, China
| | - Menghao Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Wanli Liu
- School of Life Science, Tsinghua University, Beijing, 100084, China
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