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Zhao F, Huang Y, Ji J, Liu X, Li X, Zou L, Wu K, Liu XD, Zeng S, Wang X, Hu W, Song Y, Lu Z, Zhou B, Li P, Wang W, Zhao M, Chen J, Yi L, Fan S. IDO1 promotes CSFV replication by mediating tryptophan metabolism to inhibit NF-κB signaling. J Virol 2024:e0045824. [PMID: 38814067 DOI: 10.1128/jvi.00458-24] [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: 03/14/2024] [Accepted: 03/29/2024] [Indexed: 05/31/2024] Open
Abstract
Tryptophan metabolism plays a crucial role in facilitating various cellular processes essential for maintaining normal cellular function. Indoleamine 2,3-dioxygenase 1 (IDO1) catalyzes the conversion of tryptophan (Trp) into kynurenine (Kyn), thereby initiating the degradation of Trp. The resulting Kyn metabolites have been implicated in the modulation of immune responses. Currently, the role of IDO1-mediated tryptophan metabolism in the process of viral infection remains relatively unknown. In this study, we discovered that classical swine fever virus (CSFV) infection of PK-15 cells can induce the expression of IDO1, thereby promoting tryptophan metabolism. IDO1 can negatively regulate the NF-κB signaling by mediating tryptophan metabolism, thereby facilitating CSFV replication. We found that silencing the IDO1 gene enhances the expression of IFN-α, IFN-β, and IL-6 by activating the NF-κB signaling pathway. Furthermore, our observations indicate that both silencing the IDO1 gene and administering exogenous tryptophan can inhibit CSFV replication by counteracting the cellular autophagy induced by Rapamycin. This study reveals a novel mechanism of IDO1-mediated tryptophan metabolism in CSFV infection, providing new insights and a theoretical basis for the treatment and control of CSFV.IMPORTANCEIt is well known that due to the widespread use of vaccines, the prevalence of classical swine fever (CSF) is shifting towards atypical and invisible infections. CSF can disrupt host metabolism, leading to persistent immune suppression in the host and causing significant harm when co-infected with other diseases. Changes in the host's metabolic profiles, such as increased catabolic metabolism of amino acids and the production of immunoregulatory metabolites and their derivatives, can also influence virus replication. Mammals utilize various pathways to modulate immune responses through amino acid utilization, including increased catabolic metabolism of amino acids and the production of immunoregulatory metabolites and their derivatives, thereby limiting viral replication. Therefore, this study proposes that targeting the modulation of tryptophan metabolism may represent an effective approach to control the progression of CSF.
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Affiliation(s)
- Feifan Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yaoyao Huang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Junzhi Ji
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xueyi Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Linke Zou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiao di Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Sen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xinyan Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Wenshuo Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yiwan Song
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Zhimin Lu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Bolun Zhou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Peng Li
- Wen's Foodstuffs Group Co., Ltd., Xinxing, China, Yunfu, China
| | - Weijun Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
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Liu J, Xu J, Jia L, Zhou Y, Fu Q, Wang Y, Mu D, Wang D, Li N, Hou Y. Pterostilbene nanoemulsion promotes Nrf2 signaling pathway to downregulate oxidative stress for treating Alzheimer's disease. Int J Pharm 2024; 655:124002. [PMID: 38492898 DOI: 10.1016/j.ijpharm.2024.124002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 02/28/2024] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
Pterostilbene, a stilbene compound, demonstrates neuroprotective effects through its antioxidant and anti-inflammatory properties. However, pterostilbene exhibits low bioavailability. We developed a pterostilbene nanoemulsion with better release stability and particle size. Behavioral tests, including the Y maze, new object recognition, and water maze, revealed that the pterostilbene nanoemulsion demonstrated a more significant effect on improving learning and memory function than pterostilbene. Immunofluorescence analysis revealed that pterostilbene nanoemulsion was more potent in safeguarding hippocampal neurons and inhibiting apoptosis and oxidative stress than pterostilbene. Further results from the Western blot and quantitative reverse transcription polymerase chain reaction indicated that the enhanced efficacy of pterostilbene nanoemulsion may be attributed to its stronger promotion of the nuclear factor erythroid 2-related factor 2 signaling pathway. Hence, enhanced drug delivery efficiency decreased dosage requirements and increased the bioavailability of pterostilbene, thereby potentially providing a safe, effective, and convenient treatment option for patients with Alzheimer's disease.
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Affiliation(s)
- Jingyu Liu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China
| | - Jikai Xu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China
| | - Luan Jia
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yanjun Zhou
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Qiang Fu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yichen Wang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China
| | - Danyang Mu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China
| | - Dequan Wang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China
| | - Ning Li
- School of Traditional Chinese Materia Medica, Key Laboratory of Innovative Traditional Chinese Medicine for Major Chronic Diseases of Liaoning province, Key Laboratory for TCM Material Basis Study and Innovative Drug Development of Shenyang City, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Yue Hou
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang 110167, China.
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3
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Li X, Song Y, Wang X, Fu C, Zhao F, Zou L, Wu K, Chen W, Li Z, Fan J, Li Y, Li B, Zeng S, Liu X, Zhao M, Yi L, Chen J, Fan S. The regulation of cell homeostasis and antiviral innate immunity by autophagy during classical swine fever virus infection. Emerg Microbes Infect 2023; 12:2164217. [PMID: 36583373 PMCID: PMC9848339 DOI: 10.1080/22221751.2022.2164217] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
CSFV (classical swine fever virus) is currently endemic in developing countries in Asia and has recently re-emerged in Japan. Under the pressure of natural selection pressure, CSFV keeps evolving to maintain its ecological niche in nature. CSFV has evolved mechanisms that induce immune depression, but its pathogenic mechanism is still unclear. In this study, using transcriptomics and metabolomics methods, we found that CSFV infection alters innate host immunity by activating the interferon pathway, inhibiting host inflammation, apoptosis, and remodelling host metabolism in porcine alveolar macrophages. Moreover, we revealed that autophagy could alter innate immunity and metabolism induced by CSFV infection. Enhanced autophagy further inhibited CSFV-induced RIG-I-IRF3 signal transduction axis and JAK-STAT signalling pathway and blocked type I interferon production while reducing autophagy inhibition of the NF-κB signalling pathway and apoptosis in CSFV infection cells. Furthermore, the level of CSFV infection-induced glycolysis and the content of lactate and pyruvate, as well as 3-phosphoglyceraldehyde, a derivative of glycolysis converted to serine, was altered by autophagy. We also found that silencing HK2 (hexokinase 2), the rate-limiting enzyme of glycolytic metabolism, could induce autophagy but reduce the interferon signalling pathway, NF-κB signalling pathway, and inhibition of apoptosis induced by CSFV infection. In addition, inhibited cellular autophagy by silencing ATG5 or using 3-Methyladenine, could backfill the inhibitory effect of silencing HK2 on the cellular interferon signalling pathway, NF-κB signalling pathway, and apoptosis.
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Affiliation(s)
- Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Yiwan Song
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Xinyan Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Cheng Fu
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering
| | - Feifan Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Linke Zou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Wenxian Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Zhaoyao Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Jindai Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Bingke Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Sen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Xiaodi Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, People’s Republic of China, Shuangqi Fan College of Veterinary Medicine, South China Agricultural University, Guangzhou, People’s Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, People’s Republic of China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, 510630, People’s Republic of China
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4
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Pan X, Yang K, Li J, Hou C, Xiao J, Xue M, Wang Q. Long Noncoding RNA MIATNB Regulates Hyperosmotic Stress-induced Corneal Epithelial Cell Injury by Inhibiting Autophagy in Dry Eye Disease. Curr Eye Res 2023; 48:805-816. [PMID: 37317543 DOI: 10.1080/02713683.2023.2222237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 05/24/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023]
Abstract
PURPOSE Dry eye disease (DED) has a complex etiology and the roles of long noncoding RNAs (lncRNAs) in its pathophysiology are not completely understood. Autophagy is a self-eating process important for cell survival and homeostasis. The present study explored the role of myocardial infarction-associated transcript neighbor (MIATNB) long non-coding RNA in hyperosmolarity-induced autophagy and apoptosis in human corneal epithelial cell (HCEC)-based model of dry eye disease. METHODS In vitro assays were performed with a human SV40 immortalized corneal epithelial cell line. Different concentrations of NaCl were used to create hyperosmolarity. HCECs were cultured in presence of 70-120 mM NaCl for 24 h to create an in vitro model of dry eye. RT-qPCR was performed to assess the expression of dry eye related LC3B, ATG16L, BECN1, ATG1, ATG7, ATG13, ATG5, ATG10, and ATG101 mRNAs and western blot analysis of LC3B and P62 and RFP -GFP-tagged LC3. Flow cytometry and western blot analysis of caspase 3, BCL2 and BAX were performed to detect apoptosis. Chloroquine (CQ) was used to inhibit autophagy pharmacologically. RESULTS Autophagy flux was activated in HCECs subjected to hyperosmotic stress. Hyperosmolarity activated apoptosis and inhibited HCEC migration and autophagy. Hyperosmolarity upregulated MIATNB expression, while MIATNB knockdown inhibited autophagosome degradation and promoted HCEC apoptosis. Under hyperosmolar conditions, MIATNB knockdown also inhibited the degradation of autophagolysosomes and stimulated HCEC apoptosis. CONCLUSION MIATNB plays a vital role in dry eye pathogenesis and serves as a bridge between autophagy and apoptosis. Targeting MIATNB for DED treatment should be further evaluated.
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Affiliation(s)
- Xinghui Pan
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Kun Yang
- Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Jinjian Li
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Chenting Hou
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Jie Xiao
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Meilan Xue
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, People's Republic of China
| | - Qing Wang
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
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5
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Guo X, Shen P, Shao R, Hong T, Liu W, Shen Y, Su F, Wang Q, He B. Efferocytosis-inspired nanodrug treats sepsis by alleviating inflammation and secondary immunosuppression. Biomed Mater 2023; 18:055020. [PMID: 37567216 DOI: 10.1088/1748-605x/acef9a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 08/10/2023] [Indexed: 08/13/2023]
Abstract
Uncontrolled inflammation storm induced by sepsis may lead to severe organ dysfunction and secondary immunosuppression, which is one of the main reasons for high mortality and prolonged hospitalization of septic patients. However, there is a lack of effective treatments for it at present. Here, we report an efferocytosis-inspired nanodrug (BCN@M) to treat sepsis and secondary immunosuppression via regulating the macrophage function. Bioactive molecular curcumin was loaded with bovine serum albumin and then coated with the damaged erythrocyte membrane derived from septic mice. It was found that the septic erythrocytes promoted the efferocytosis signal and BCN@M uptake efficiency by macrophages. The well-constructed BCN@M nanodrug reduced the hyperinflammation in sepsis and restored the bacterial clearance ability of macrophage in the secondary immunosuppression state. This study highlights BCN@M as an efferocytosis-inspired nanodrug to alleviate hyperinflammation and secondary immunosuppression of sepsis.
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Affiliation(s)
- Xiaoyu Guo
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Centre for Cardiopulmonary Translational Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Department of Anesthesiology, Huadong Hospital affiliated to Fudan University, Shanghai, People's Republic of China
| | - Peiming Shen
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Rongjiao Shao
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Centre for Cardiopulmonary Translational Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ting Hong
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Department of Anesthesiology, Huadong Hospital affiliated to Fudan University, Shanghai, People's Republic of China
| | - Weizhuo Liu
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Centre for Cardiopulmonary Translational Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yi Shen
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Centre for Cardiopulmonary Translational Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Fan Su
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
- Centre for Cardiopulmonary Translational Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Qinlan Wang
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Bin He
- Department of Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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6
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Zhang J, Xiang Q, Wu M, Lao YZ, Xian YF, Xu HX, Lin ZX. Autophagy Regulators in Cancer. Int J Mol Sci 2023; 24:10944. [PMID: 37446120 PMCID: PMC10341480 DOI: 10.3390/ijms241310944] [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: 04/25/2023] [Revised: 06/22/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Autophagy plays a complex impact role in tumor initiation and development. It serves as a double-edged sword by supporting cell survival in certain situations while also triggering autophagic cell death in specific cellular contexts. Understanding the intricate functions and mechanisms of autophagy in tumors is crucial for guiding clinical approaches to cancer treatment. Recent studies highlight its significance in various aspects of cancer biology. Autophagy enables cancer cells to adapt to and survive unfavorable conditions by recycling cellular components. However, excessive or prolonged autophagy can lead to the self-destruction of cancer cells via a process known as autophagic cell death. Unraveling the molecular mechanisms underlying autophagy regulation in cancer is crucial for the development of targeted therapeutic interventions. In this review, we seek to present a comprehensive summary of current knowledge regarding autophagy, its impact on cancer cell survival and death, and the molecular mechanisms involved in the modulation of autophagy for cancer therapy.
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Affiliation(s)
- Juan Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR 999077, China; (J.Z.); (Y.-F.X.)
| | - Qian Xiang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Q.X.); (M.W.); (Y.-Z.L.)
| | - Man Wu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Q.X.); (M.W.); (Y.-Z.L.)
| | - Yuan-Zhi Lao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Q.X.); (M.W.); (Y.-Z.L.)
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR 999077, China; (J.Z.); (Y.-F.X.)
| | - Hong-Xi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (Q.X.); (M.W.); (Y.-Z.L.)
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR 999077, China; (J.Z.); (Y.-F.X.)
- Hong Kong Institute of Integrative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR 999077, China
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7
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Ke PY. Crosstalk between Autophagy and RLR Signaling. Cells 2023; 12:cells12060956. [PMID: 36980296 PMCID: PMC10047499 DOI: 10.3390/cells12060956] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Autophagy plays a homeostatic role in regulating cellular metabolism by degrading unwanted intracellular materials and acts as a host defense mechanism by eliminating infecting pathogens, such as viruses. Upon viral infection, host cells often activate retinoic acid-inducible gene I (RIG-I)-like receptor (RLR) signaling to induce the transcription of type I interferons, thus establishing the first line of the innate antiviral response. In recent years, numerous studies have shown that virus-mediated autophagy activation may benefit viral replication through different actions on host cellular processes, including the modulation of RLR-mediated innate immunity. Here, an overview of the functional molecules and regulatory mechanism of the RLR antiviral immune response as well as autophagy is presented. Moreover, a summary of the current knowledge on the biological role of autophagy in regulating RLR antiviral signaling is provided. The molecular mechanisms underlying the crosstalk between autophagy and RLR innate immunity are also discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
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Shin S, Han D, Cho H, Kim E, Choi K. Non-cytopathic bovine viral diarrhoea virus 2 induces autophagy to enhance its replication. Vet Med Sci 2022; 9:405-416. [PMID: 36533845 PMCID: PMC9856993 DOI: 10.1002/vms3.1052] [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] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Bovine viral diarrhoea virus (BVDV) is an important viral pathogen that has an economic impact on the livestock industry worldwide. Autophagy is one of the earliest cell-autonomous defence mechanisms against microbial invasion, and many types of viruses can induce autophagy by infecting host cells. OBJECTIVES The aim of this study was to identify the role of autophagy in the pathogenesis of non-cytopathic (ncp) BVDV2 infection. METHODS Madin-Darby bovine kidney (MDBK) cells were treated with ncp BVDV2, rapamycin, or 3-methyladenine (MA) and ncp BVDV2 and then incubated at 37°C for 24 h. Cells were harvested, and the effects of autophagy were determined by transmission electron microscopy (TEM), confocal laser microscopy, western blotting and qRT-PCR. Apoptotic analysis was also performed using western blotting and flow cytometry. RESULTS In ncp BVDV2-infected MDBK cells, more autophagosomes were observed by TEM, and the number of microtubule-associated protein 1 light chain 3B (LC3B) with green fluorescent protein puncta was also increased. The ncp BVDV2-infected cells showed significantly enhanced conversion of LC3-I to LC3-II, as well as upregulation of autophagy-related proteins, including ATG5 and Beclin 1, and substantial degradation of p62/SQSTM1. These results are similar to those induced by rapamycin, an autophagy inducer. E2 protein expression, which is associated with viral replication, increased over time in ncp BVDV2-infected cells. Inhibition of autophagy by 3-MA in ncp BVDV2-infected MDBK cells downregulated the expressions of LC3-II, ATG5 and Beclin 1 and prevented the degradation of p62/SQSTM1. Moreover, the expressions of phosphorylated Akt and procaspase-3 were significantly increased in ncp BVDV2-infected cells. In addition, the mRNA level of protein kinase R (PKR) was significantly reduced in ncp BVDV2-infected cells. CONCLUSIONS Our results demonstrate that ncp BVDV2 infection induced autophagy in MDBK cells via anti-apoptosis and PKR suppression. Therefore, autophagy may play a role in establishing persistent infection caused by ncp BVDV.
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Affiliation(s)
- Seung‐Uk Shin
- Department of Animal Science and BiotechnologyCollege of Ecology and Environmental Science, Kyungpook National UniversitySangjuSouth Korea
| | - Du‐Gyeong Han
- Korea National Institute of HealthCheongjuChungcheongbuk‐doSouth Korea
| | - Hyung‐Chul Cho
- Department of Animal Science and BiotechnologyCollege of Ecology and Environmental Science, Kyungpook National UniversitySangjuSouth Korea
| | - Eun‐Mi Kim
- Department of Animal Science and BiotechnologyCollege of Ecology and Environmental Science, Kyungpook National UniversitySangjuSouth Korea
| | - Kyoung‐Seong Choi
- Department of Animal Science and BiotechnologyCollege of Ecology and Environmental Science, Kyungpook National UniversitySangjuSouth Korea
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9
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Li W, Zhang Z, Zhang L, Zhou Q, Li Y, Yi L, Ding H, Zhao M, Chen J, Fan S. Interaction of SERINC5 and IFITM1/2/3 regulates the autophagy-apoptosis-immune network under CSFV infection. Virulence 2022; 13:1720-1740. [PMID: 36205528 PMCID: PMC9553151 DOI: 10.1080/21505594.2022.2127241] [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] [Indexed: 11/18/2022] Open
Abstract
The host restriction factor serine incorporator 5 (SERINC5) plays a key role in inhibiting viral activity and has been shown to inhibit classical swine fever virus (CSFV) infection. However, the action of SERINC5 in the interaction between host cells and CSFV remains poorly understood. This study found that SERINC5 represses CSFV-induced autophagy through MAPK1/3-mTOR and AKT-mTOR signalling pathways. Further research showed that SERINC5 promotes apoptosis by repressing autophagy. Likewise, it was demonstrated that SERINC5 interacting proteins IFITM1/2/3 inhibit CSFV replication and regulate autophagy in a lysosomal-associated membrane protein LAMP1-dependent manner. In addition, IFITM1/2/3 interference promotes the NF-κB signalling pathway for potential immunoregulation by inhibiting autophagy. Finally, the functional silencing of IFITM1/2/3 genes was demonstrated to enhance the inhibitory effect of SERINC5 on autophagy. Taken together, These data uncover a novel mechanism through SERINC5 and its interacting proteins IFITM1/2/3, which mediates CSFV replication, and provides new avenues for controlling CSFV.
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Affiliation(s)
- Wenhui Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China.,College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Zilin Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Liangliang Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Qingfeng Zhou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Wen' s Foodstuffs Group Co, Ltd, Guangdong, China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, South China Agricultural University, Guangzhou, China.,Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China
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10
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Eugenol Attenuates Transmissible Gastroenteritis Virus-Induced Oxidative Stress and Apoptosis Via ROS-NRF2-ARE Signaling. Antioxidants (Basel) 2022; 11:antiox11091838. [PMID: 36139913 PMCID: PMC9495523 DOI: 10.3390/antiox11091838] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/30/2022] Open
Abstract
Transmissible gastroenteritis virus (TGEV), a coronavirus that causes severe diarrhea due to oxidative stress in the piglet intestine, is a major cause of economic loss in the livestock industry. However, limited interventions have been shown to be effective in the treatment of TGEV. Here, we demonstrate the therapeutic activity of eugenol in TGEV-induced intestinal oxidative stress and apoptosis. Our data show that eugenol supplementation protects intestine and IPEC-J2 cells from TGEV-induced damage. Mechanistically, eugenol reduces TGEV-induced oxidative stress in intestinal epithelial cells by reducing reactive oxygen species levels. Interestingly, eugenol also inhibits TGEV-induced intestinal cell apoptosis in vitro and in vivo. In conclusion, our data suggest that eugenol prevents TGEV-induced intestinal oxidative stress by reducing ROS-mediated damage to antioxidant signaling pathways. Therefore, eugenol may be a promising therapeutic strategy for TGEV infection.
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11
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Huang F, Dai C, Zhang Y, Zhao Y, Wang Y, Ru G. Development of Molecular Mechanisms and Their Application on Oncolytic Newcastle Disease Virus in Cancer Therapy. Front Mol Biosci 2022; 9:889403. [PMID: 35860357 PMCID: PMC9289221 DOI: 10.3389/fmolb.2022.889403] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/10/2022] [Indexed: 11/13/2022] Open
Abstract
Cancer is caused by the destruction or mutation of cellular genetic materials induced by environmental or genetic factors. It is defined by uncontrolled cell proliferation and abnormality of the apoptotic pathways. The majority of human malignancies are characterized by distant metastasis and dissemination. Currently, the most common means of cancer treatment include surgery, radiotherapy, and chemotherapy, which usually damage healthy cells and cause toxicity in patients. Targeted therapy is an effective tumor treatment method with few side effects. At present, some targeted therapeutic drugs have achieved encouraging results in clinical studies, but finding an effective solution to improve the targeting and delivery efficiency of these drugs remains a challenge. In recent years, oncolytic viruses (OVs) have been used to direct the tumor-targeted therapy or immunotherapy. Newcastle disease virus (NDV) is a solid oncolytic agent capable of directly killing tumor cells and increasing tumor antigen exposure. Simultaneously, NDV can trigger the proliferation of tumor-specific immune cells and thus improve the therapeutic efficacy of NDV in cancer. Based on NDV’s inherent oncolytic activity and the stimulation of antitumor immune responses, the combination of NDV and other tumor therapy approaches can improve the antitumor efficacy while reducing drug toxicity, indicating a broad application potential. We discussed the biological properties of NDV, the antitumor molecular mechanisms of oncolytic NDV, and its application in the field of tumor therapy in this review. Furthermore, we presented new insights into the challenges that NDV will confront and suggestions for increasing NDV’s therapeutic efficacy in cancer.
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Affiliation(s)
- Fang Huang
- Cancer Center, Department of Pathology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Chuanjing Dai
- Cancer Center, Department of Pathology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- College of Life Sciences and Medicine, Xinyuan Institute of Medicine and Biotechnology, Zhejiang Sci-Tech University, Hangzhou, China
| | - Youni Zhang
- College of Life Sciences and Medicine, Xinyuan Institute of Medicine and Biotechnology, Zhejiang Sci-Tech University, Hangzhou, China
- Department of Laboratory Medicine, Tiantai People’s Hospital, Taizhou, China
| | - Yuqi Zhao
- College of Life Sciences and Medicine, Xinyuan Institute of Medicine and Biotechnology, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yigang Wang
- College of Life Sciences and Medicine, Xinyuan Institute of Medicine and Biotechnology, Zhejiang Sci-Tech University, Hangzhou, China
- *Correspondence: Yigang Wang, ; Guoqing Ru,
| | - Guoqing Ru
- Cancer Center, Department of Pathology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- *Correspondence: Yigang Wang, ; Guoqing Ru,
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12
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Li F, Li B, Niu X, Chen W, Li Y, Wu K, Li X, Ding H, Zhao M, Chen J, Yi L. The Development of Classical Swine Fever Marker Vaccines in Recent Years. Vaccines (Basel) 2022; 10:vaccines10040603. [PMID: 35455351 PMCID: PMC9026404 DOI: 10.3390/vaccines10040603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/05/2022] [Accepted: 04/10/2022] [Indexed: 02/01/2023] Open
Abstract
Classical swine fever (CSF) is a severe disease that has caused serious economic losses for the global pig industry and is widely prevalent worldwide. In recent decades, CSF has been effectively controlled through compulsory vaccination with a live CSF vaccine (C strain). It has been successfully eradicated in some countries or regions. However, the re-emergence of CSF in Japan and Romania, where it had been eradicated, has brought increased attention to the disease. Because the traditional C-strain vaccine cannot distinguish between vaccinated and infected animals (DIVA), this makes it difficult to fight CSF. The emergence of marker vaccines is considered to be an effective strategy for the decontamination of CSF. This paper summarizes the progress of the new CSF marker vaccine and provides a detailed overview of the vaccine design ideas and immunization effects. It also provides a methodology for the development of a new generation of vaccines for CSF and vaccine development for other significant epidemics.
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Affiliation(s)
- Fangfang Li
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Bingke Li
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Xinni Niu
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Wenxian Chen
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (J.C.); (L.Y.); Tel.: +86-20-8528-8017 (J.C.); +86-20-8528-8017 (L.Y.)
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, No. 483 Wushan Road, Tianhe District, Guangzhou 510642, China; (F.L.); (B.L.); (X.N.); (W.C.); (Y.L.); (K.W.); (X.L.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (J.C.); (L.Y.); Tel.: +86-20-8528-8017 (J.C.); +86-20-8528-8017 (L.Y.)
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13
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Zhang W, Liu C, Li J, Lu Y, Li H, Zhuang J, Ren X, Wang M, Sun C. Tanshinone IIA: New Perspective on the Anti-Tumor Mechanism of A Traditional Natural Medicine. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 50:209-239. [PMID: 34983327 DOI: 10.1142/s0192415x22500070] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The search for natural and efficacious antineoplastic drugs, with minimal toxicity and side effects, is an important part of antitumor drug research and development. Tanshinone IIA is the most evaluated lipophilic active component of Salvia miltiorrhiza. Tanshinone IIA is a path-breaking traditional drug applied in cardiovascular treatment. It has also been found that tanshinone IIA plays an important role in the digestive, respiratory and circulatory systems, as well as in other tumor diseases. Tanshinone IIA significantly inhibits the proliferation of several types of tumors, blocks the cell cycle, induces apoptosis and autophagic death, in addition to inhibiting cell migration and invasion. Among these, the regulation of tumor-cell apoptosis signaling pathways is the key breakthrough point in several modes of antitumor therapy. The PI3K/AKT/MTOR signaling pathway and the JNK pathway are the key pathways for tanshinone IIA to induce tumor cell apoptosis. In addition to glycolysis, reactive oxygen species and signal transduction all play an active role with the participation of tanshinone IIA. Endogenous apoptosis is considered the main mechanism of tumor apoptosis induced by tanshinone IIA. Multiple pathways and targets play a role in the process of endogenous apoptosis. Tanshinone IIA can protect chemotherapy drugs, which is mainly reflected in the protection of the side effects of chemotherapy drugs, such as neurotoxicity and inhibition of the hematopoietic system. Tanshinone IIA also has a certain regulatory effect on tumor angiogenesis, which is mainly manifested in the control of hypoxia. Our findings indicated that tanshinone IIA is an effective treatment agent in the cardiovascular field and plays a significant role in antitumor therapeutics. This paper reviews the pharmacological potential and inhibitory effect of tanshinone IIA on cancer. It is greatly anticipated that tanshinone IIA will be employed as an adjuvant in the treatment of various cancers.
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Affiliation(s)
- Wenfeng Zhang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P. R. China.,School of Traditional Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, P. R. China
| | - Cun Liu
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P. R. China
| | - Jie Li
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P. R. China
| | - Yiping Lu
- Integrated Traditional Chinese and Western Medicine Center, Department of Medicine, Qingdao University, Qingdao Shandong 266000, P. R. China
| | - Huayao Li
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P. R. China
| | - Jing Zhuang
- Department of Oncology, Weifang Traditional Chinese Medicine Hospital, Weifang, Shandong 261041, P. R. China
| | - Xin Ren
- Clinical Medical Colleges, Weifang Medical University, Weifang, Shandong 261000, P. R. China
| | - Mengmeng Wang
- Clinical Medical Colleges, Weifang Medical University, Weifang, Shandong 261000, P. R. China
| | - Changgang Sun
- Department of Oncology, Weifang Traditional Chinese Medicine Hospital, Weifang, Shandong 261041, P. R. China.,Qingdao Academy of Chinese Medical Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, P. R. China
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14
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Wu K, Zhang Y, Zeng S, Liu X, Li Y, Li X, Chen W, Li Z, Qin Y, Chen J, Fan S. Development and Application of RAA Nucleic Acid Test Strip Assay and Double RAA Gel Electrophoresis Detection Methods for ASFV and CSFV. Front Mol Biosci 2022; 8:811824. [PMID: 35174210 PMCID: PMC8841470 DOI: 10.3389/fmolb.2021.811824] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/24/2021] [Indexed: 11/13/2022] Open
Abstract
African swine fever (ASF) is an acute, severe and hemorrhagic infectious disease caused by African swine fever virus (ASFV) infecting domestic pigs and wild boars. Since the outbreak of the disease in China in 2018, it has brought a great impact on China’s pig industry. Classical swine fever (CSF) is an acute contact infectious disease of pigs caused by classical swine fever virus (CSFV) infection. Clinically, acute CSF usually shows persistent high fever, anorexia, extensive congestion and bleeding of the skin and mucosa, which are similar to ASF. It is of great significance to prevent, control and accurately detect ASF and CSF in pig farms. In this study, Recombinase aided amplification (RAA) technology combined with a nucleic acid test strip (RAA-strip) was established for simple and specific detection of ASFV/CSFV. The sensitivity and preliminary clinical application results showed that the RAA test strip established in this study could detect recombinant plasmids containing ASFV/CSFV gene fragments as low as 103 copies/µL. The minimum detection limits of virus DNA/cDNA were 10 and 12 pg respectively, and there was no cross-reaction with other porcine viruses. The specificity of the method was good. We used 37–42 clinical samples to evaluate the performance of our established method, and the positive concordance rates with conventional PCR were 94.1 and 57.1%, respectively. In addition, ASFV and CSFV double RAA agarose gel electrophoresis detection methods were established. The results showed that the method had good specificity. The detection limit of this method is 106 copies for ASFV p72 gene recombinant plasmid and 105 copies for CSFV NS5B Gene recombinant plasmid. The use of this method for clinical material detection was consistent with the PCR method. In summary, the developed method of RAA-strip assay for ASFV and CSFV realized the visual detection of pathogens, and the developed method of dual RAA agarose gel electrophoresis assay for ASFV and CSFV realized the simultaneous detection of two pathogens in one reaction, with good specificity, high sensitivity and rapid reaction rate, which was expected to be clinically feasible for the differential diagnosis of ASF and CSF provided technical support.
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Affiliation(s)
- Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yuanyuan Zhang
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Sen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Xiaodi Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Wenxian Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Zhaoyao Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Yuwei Qin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- *Correspondence: Jinding Chen, ; Shuangqi Fan,
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- *Correspondence: Jinding Chen, ; Shuangqi Fan,
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15
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Zhu M, Pan J, Zhang M, Tong X, Zhang Y, Zhang Z, Liang Z, Zhang X, Hu X, Xue R, Cao G, Gong C. Bombyx mori cypovirus (BmCPV) induces PINK1-Parkin mediated mitophagy via interaction of VP4 with host Tom40. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 126:104244. [PMID: 34450127 DOI: 10.1016/j.dci.2021.104244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
The mechanism by which infection by Bombyx mori cytoplasmic nucleopolyhedrosis virus (BmCPV) causes autophagy has not been studied in detail. Herein we have observed by electron microscopy that infection with BmCPV causes autophagosome and mitochondrial structure damage in Bombyx mori midgut. In BmN cells infected with BmCPV and expressing eGFP-LC3, fluorescence spots and LC3-II levels increased, suggesting that BmCPV infection causes autophagy. Autophagy inducer rapamycin (Rap) and autophagy inhibitor 3-methyladenine (3-MA) were used to monitor the effects of mitophagy on BmCPV proliferation. It was found BmCPV proliferation to be promoted by mitophagy. Transient transfection experiments in cultured BmN cells showed that mitophagy can be triggered by expression of BmCPV structural protein VP4. Moreover, VP4 caused upregulation of p-Drp1, PINK1 and Parkin proteins in the mitophagy pathway and downregulation of mitochondrial membrane protein Tom20. Furthermore, interaction between VP4 with Tom40 was confirmed by Co-IP, western blot and colocalization experiment, and overexpression of Tom40 reduce the level of mitochondrial autophagy induced by VP4. These results suggested that VP4 induced PINK1-Parkin-mediated mitophagy interacting with Tom40. These findings deepen our understanding of the interaction between BmCPV and silkworm and also provide a molecular target for screening anti-BmCPV drugs.
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Affiliation(s)
- Min Zhu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Jun Pan
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Mingtian Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Xinyu Tong
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Yunshan Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Ziyao Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Zi Liang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Xing Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Xiaolong Hu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Agricultural Biotechnology Research Institute, Agricultural Biotechnology and Ecological Research Institute, Soochow University, Suzhou, 215123, China
| | - Renyu Xue
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Agricultural Biotechnology Research Institute, Agricultural Biotechnology and Ecological Research Institute, Soochow University, Suzhou, 215123, China
| | - Guangli Cao
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Agricultural Biotechnology Research Institute, Agricultural Biotechnology and Ecological Research Institute, Soochow University, Suzhou, 215123, China.
| | - Chengliang Gong
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Agricultural Biotechnology Research Institute, Agricultural Biotechnology and Ecological Research Institute, Soochow University, Suzhou, 215123, China.
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16
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Ke PY. Autophagy and antiviral defense. IUBMB Life 2021; 74:317-338. [PMID: 34859938 DOI: 10.1002/iub.2582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/04/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
Targeting intracellular components for lysosomal degradation by autophagy not only maintains cellular homeostasis but also counteracts the effects of external stimuli, including invading pathogens. Among various kinds of pathogens, viruses have been extensively shown to induce autophagy to benefit viral growth in infected cells and to modulate host defense responses, such as innate antiviral immunity. Recently, numerous lines of evidence have implied that virus-induced autophagy triggers multilayer mechanisms to regulate the innate antiviral response of host cells, thus promoting a balance in virus-host cell interactions. In this review, the detailed mechanisms underlying autophagy and the innate antiviral immune response are first described. Then, I summarize the current information regarding the diverse functional role(s) of autophagy in the control of antiviral defenses against different types of viral infections. Moreover, the physiological significance of autophagy-regulated antiviral responses on the viral life cycle and the potential autophagy alterations induced by virus-associated antiviral signaling is further discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC.,Liver Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ROC
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17
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Shao Q, Wu F, Liu T, Wang W, Liu T, Jin X, Xu L, Ma Y, Huang G, Chen Z. JieZe-1 Alleviates HSV-2 Infection-Induced Genital Herpes in Balb/c Mice by Inhibiting Cell Apoptosis via Inducing Autophagy. Front Pharmacol 2021; 12:775521. [PMID: 34803718 PMCID: PMC8595469 DOI: 10.3389/fphar.2021.775521] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/22/2021] [Indexed: 11/13/2022] Open
Abstract
Objectives: Genital herpes (GH) is a common sexually transmitted disease mainly caused by herpes simplex virus 2 (HSV-2). JieZe-1 (JZ-1) is an in-hospital prescription that has been used in Tongji Hospital for many years to treat various lower female genital tract infectious diseases. Our previous study showed that JZ-1 can protect against HSV-2 infection in vitro by inducing autophagy. However, whether JZ-1 can protect against HSV-2 infection in vivo, and the underlying mechanisms involved still remain unclear. Therefore, this study was designed to address above questions. Methods: 8-week-old female balb/c mice were injected intravaginally with HSV-2 to establish GH model. The symptom score, body weight, and histological examination were recorded to assess the animal model of HSV-2 infected and the therapeutic effect of JZ-1. Inflammatory response was determined by detecting inflammatory cells infiltration and local cytokines levels. After then, under autophagy inhibitor chloroquine application, we measured the levels of cell apoptosis and autophagy and investigated the relationship between enhanced autophagy and cell apoptosis. Next, the classic PI3K/Akt/mTOR axis was examined, and in vitro experiment was carried out for further verification. Results: Our results showed that JZ-1 administration significantly reduces symptom score, increases weight gain and alleviates histological damage in HSV-2 infection-induced GH in balb/c mice. JZ-1 administration obviously ameliorates inflammatory responses with reduced T-lymphocytes, T helper cells, macrophages and neutrophils infiltration, and local IL-1β, IL-6, TNF-α and CCL2 levels. HSV-2 infection leads to massive cell apoptosis, which was also restored by JZ-1. Meanwhile, we found that HSV-2 infection blocks autophagic flux in vivo and JZ-1 administration induces autophagy. After chloroquine application, it was observed that the inhibition of autophagy is strongly associated with increased cell apoptosis, whereas the promotion of autophagy remarkedly decreases apoptosis. These results suggested that JZ-1 inhibits cell apoptosis in GH by inducing autophagy, which was further supported in later in vitro experiment. Additionally, PI3K/Akt/mTOR signaling pathway was also downregulated by JZ-1 administration. Conclusion: Our data demonstrated that JZ-1 can alleviate HSV-2 infection-induced GH in balb/c mice by inhibiting cell apoptosis via inducing autophagy, and the underlying mechanisms may be associated with the inhibition of PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fan Wu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tong Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjia Wang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianli Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ximing Jin
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lijun Xu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yonggui Ma
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guangying Huang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhuo Chen
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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18
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Wang T, Zhang L, Liang W, Liu S, Deng W, Liu Y, Liu Y, Song M, Guo K, Zhang Y. Extracellular vesicles originating from autophagy mediate an antibody-resistant spread of classical swine fever virus in cell culture. Autophagy 2021; 18:1433-1449. [PMID: 34740307 DOI: 10.1080/15548627.2021.1987673] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Free spread is a classical mode for mammalian virus transmission. However, the efficiency of this transmission approach is generally low as there are structural barriers or immunological surveillances in the extracellular environment under physiological conditions. In this study, we systematically analyzed the spreading of classical swine fever virus (CSFV) using multiple viral replication analysis in combination with antibody neutralization, transwell assay, and electron microscopy, and identified an extracellular vesicle (EV)-mediated spreading of CSFV in cell cultures. In this approach, intact CSFV virions are enclosed within EVs and transferred into uninfected cells with the movement of EVs, leading to an antibody-resistant infection of the virus. Using fractionation assays, immunostaining, and electron microscopy, we characterized the CSFV-containing EVs and demonstrated that the EVs originated from macroautophagy/autophagy. Taken together, our results showed a new spreading mechanism for CSFV and demonstrated that the EVs in CSFV spreading are closely related to autophagy. These findings shed light on the immune evasion mechanisms of CSFV transmission, as well as new functions of cellular vesicles in virus lifecycles.Abbreviations: 3-MA: 3-methyladenine; CCK-8: Cell Counting Kit-8; CSF: classical swine fever; CQ: chloroquine; CSFV: classical swine fever virus; DAPI, 4-,6-diamidino-2-phenylindole; EVs: extracellular vesicles; hpi: h post infection; IEM: immunoelectron microscopy; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MOI: multiplicity of infection; MVs: microvesicles; ND50: half neutralizing dose; PCR: polymerase chain reaction; PBS: phosphate-buffered saline; SEC: size-exclusion chromatography; siRNA: small interfering RNA; TEM: transmission electron microscopy.
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Affiliation(s)
- Tao Wang
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Liang Zhang
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Wulong Liang
- College of Veterinary Medicine, Northwest A&f University, Yangling, China.,Henan International Joint Laboratory of Glioma Metabolism and Microenvironment Research, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shanchuan Liu
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Wen Deng
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Yangruiyu Liu
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Yaru Liu
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Mengzhao Song
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Kangkang Guo
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&f University, Yangling, China
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19
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Li P, Chang M. Roles of PRR-Mediated Signaling Pathways in the Regulation of Oxidative Stress and Inflammatory Diseases. Int J Mol Sci 2021; 22:ijms22147688. [PMID: 34299310 PMCID: PMC8306625 DOI: 10.3390/ijms22147688] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 12/13/2022] Open
Abstract
Oxidative stress is a major contributor to the pathogenesis of various inflammatory diseases. Accumulating evidence has shown that oxidative stress is characterized by the overproduction of reactive oxygen species (ROS). Previous reviews have highlighted inflammatory signaling pathways, biomarkers, molecular targets, and pathogenetic functions mediated by oxidative stress in various diseases. The inflammatory signaling cascades are initiated through the recognition of host cell-derived damage associated molecular patterns (DAMPs) and microorganism-derived pathogen associated molecular patterns (PAMPs) by pattern recognition receptors (PRRs). In this review, the effects of PRRs from the Toll-like (TLRs), the retinoic acid-induced gene I (RIG-I)-like receptors (RLRs) and the NOD-like (NLRs) families, and the activation of these signaling pathways in regulating the production of ROS and/or oxidative stress are summarized. Furthermore, important directions for future studies, especially for pathogen-induced signaling pathways through oxidative stress are also reviewed. The present review will highlight potential therapeutic strategies relevant to inflammatory diseases based on the correlations between ROS regulation and PRRs-mediated signaling pathways.
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Affiliation(s)
- Pengwei Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
| | - Mingxian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;
- Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-027-6878-0760
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20
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Histone Methyltransferase G9a Promotes the Development of Renal Cancer through Epigenetic Silencing of Tumor Suppressor Gene SPINK5. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6650781. [PMID: 34336110 PMCID: PMC8294961 DOI: 10.1155/2021/6650781] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 04/05/2021] [Accepted: 06/22/2021] [Indexed: 01/25/2023]
Abstract
Background Renal cell carcinoma (RCC) accounts for approximately 2–3% of malignant tumors in adults, while clear cell renal cell carcinoma accounts for 70–85% of kidney cancer cases, with an increasing incidence worldwide. G9a is the second histone methyltransferase found in mammals, catalyzing lysine and histone methylation. It regulates gene transcription by catalyzing histone methylation and interacting with transcription factors to alter the tightness of histone-DNA binding. The main purpose of this study is to explore the role and mechanism of G9a in renal cell carcinoma. Methods Firstly, we investigated the expression of G9a in 80 clinical tissues and four cell lines. Then, we explored the effect of G9a-specific inhibitor UNC0638 on proliferation, apoptosis, migration, and invasion of two renal cancer cell lines (786-O, SN12C). In order to study the specific mechanism, G9a knocking down renal cancer cell line was constructed by lentivirus. Finally, we identified the downstream target genes of G9a using ChIP experiments and rescue experiments. Results The results showed that the specific G9a inhibitor UNC0638 significantly inhibited the proliferation, migration, and invasion of kidney cancer in vivo and in vitro; similar results were obtained after knocking down G9a. Meanwhile, we demonstrated that SPINK5 was one of the downstream target genes of G9a through ChIP assay and proved that G9a downregulate the expression of SPINK5 by methylation of H3K9me2. Therefore, targeting G9a might be a new approach to the treatment of kidney cancer. Conclusion G9a was upregulated in renal cancer and could promote the development of renal cancer in vitro and in vivo. Furthermore, we identified SPINK5 as one of the downstream target genes of G9a. Therefore, targeting G9a might be a new treatment for kidney cancer.
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21
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Wu K, Fan S, Zou L, Zhao F, Ma S, Fan J, Li X, Zhao M, Yan H, Chen J. Molecular Events Occurring in Lipophagy and Its Regulation in Flaviviridae Infection. Front Microbiol 2021; 12:651952. [PMID: 34093468 PMCID: PMC8175637 DOI: 10.3389/fmicb.2021.651952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/21/2021] [Indexed: 12/17/2022] Open
Abstract
Diseases caused by Flaviviridae have a wide global and economic impact due to high morbidity and mortality. Flaviviridae infection usually leads to severe, acute or chronic diseases, such as liver injury and liver cancer resulting from hepatitis C virus (HCV) infection, dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS) caused by dengue virus (DENV). Given the highly complex pathogenesis of Flaviviridae infections, they are still not fully understood at present. Accumulating evidence suggests that host autophagy is disrupted to regulate the life cycle of Flaviviridae. Organelle-specific autophagy is able to selectively target different organelles for quality control, which is essential for regulating cellular homeostasis. As an important sub process of autophagy, lipophagy regulates lipid metabolism by targeting lipid droplets (LDs) and is also closely related to the infection of a variety of pathogenic microorganisms. In this review, we briefly understand the LDs interaction relationship with Flaviviridae infection, outline the molecular events of how lipophagy occurs and the related research progress on the regulatory mechanisms of lipophagy in Flaviviridae infection. Exploring the crosstalk between viral infection and lipophagy induced molecular events may provide new avenues for antiviral therapy.
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Affiliation(s)
- Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Linke Zou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Feifan Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shengming Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Jindai Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Huichao Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
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22
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Fan J, Liao Y, Zhang M, Liu C, Li Z, Li Y, Li X, Wu K, Yi L, Ding H, Zhao M, Fan S, Chen J. Anti-Classical Swine Fever Virus Strategies. Microorganisms 2021; 9:microorganisms9040761. [PMID: 33917361 PMCID: PMC8067343 DOI: 10.3390/microorganisms9040761] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/24/2021] [Accepted: 04/02/2021] [Indexed: 12/23/2022] Open
Abstract
Classical swine fever (CSF), caused by CSF virus (CSFV), is a highly contagious swine disease with high morbidity and mortality, which has caused significant economic losses to the pig industry worldwide. Biosecurity measures and vaccination are the main methods for prevention and control of CSF since no specific drug is available for the effective treatment of CSF. Although a series of biosecurity and vaccination strategies have been developed to curb the outbreak events, it is still difficult to eliminate CSF in CSF-endemic and re-emerging areas. Thus, in addition to implementing enhanced biosecurity measures and exploring more effective CSF vaccines, other strategies are also needed for effectively controlling CSF. Currently, more and more research about anti-CSFV strategies was carried out by scientists, because of the great prospects and value of anti-CSFV strategies in the prevention and control of CSF. Additionally, studies on anti-CSFV strategies could be used as a reference for other viruses in the Flaviviridae family, such as hepatitis C virus, dengue virus, and Zika virus. In this review, we aim to summarize the research on anti-CSFV strategies. In detail, host proteins affecting CSFV replication, drug candidates with anti-CSFV effects, and RNA interference (RNAi) targeting CSFV viral genes were mentioned and the possible mechanisms related to anti-CSFV effects were also summarized.
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Affiliation(s)
- Jindai Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Yingxin Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Mengru Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Chenchen Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Zhaoyao Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (S.F.); (J.C.); Tel.: +86-20-8528-8017 (J.C.)
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (J.F.); (Y.L.); (M.Z.); (C.L.); (Z.L.); (Y.L.); (X.L.); (K.W.); (L.Y.); (H.D.); (M.Z.)
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou 510642, China
- Correspondence: (S.F.); (J.C.); Tel.: +86-20-8528-8017 (J.C.)
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23
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The Regulation of ROS- and BECN1-Mediated Autophagy by Human Telomerase Reverse Transcriptase in Glioblastoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6636510. [PMID: 33763172 PMCID: PMC7963889 DOI: 10.1155/2021/6636510] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 02/18/2021] [Accepted: 02/25/2021] [Indexed: 12/17/2022]
Abstract
Glioblastoma (GBM) is the most common and aggressive malignant brain tumor with high morbidity and mortality. Human telomerase reverse transcriptase (hTERT), the catalytic subunit of human telomerase, is overexpressed in most cancers including GBM. It is well known that hTERT can compensate telomere shortening to immortalize cells. However, in addition to the canonical function, hTERT has the roles beyond canonical telomere maintenance. To further understand the effects of hTERT on glioblastoma progression, we investigated the role of hTERT in regulating autophagy-a conserved pathway, by which cells deliver cellular organic material and impaired organelles to the lysosomes for degradation and recycle these cargos to produce energy under a stressful condition. Our results showed that downregulation of hTERT impaired autophagy levels by suppressing BECN1/beclin-1 and induced an increase of reactive oxygen species (ROS), which resulted in cell death ultimately. On the contrary, overexpression of BECN1 or treating cells with the antioxidant N-acetylcysteine (NAC) could restore the survival of hTERT knockdown cells. Our study will provide an additional basis of telomerase-targeting therapy for future clinical anticancer treatment.
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Schofield JH, Schafer ZT. Mitochondrial Reactive Oxygen Species and Mitophagy: A Complex and Nuanced Relationship. Antioxid Redox Signal 2021; 34:517-530. [PMID: 32079408 DOI: 10.1089/ars.2020.8058] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Significance: Mitochondria represent a major source of intracellular reactive oxygen species (ROS) generation. This is often a consequence of oxidative phosphorylation, which can produce ROS as a result of leakage from the electron transport chain. In addition, quality control mechanisms exist to protect cells from cytotoxic ROS production. One such mechanism is selective autophagic degradation of ROS-producing mitochondria, termed mitophagy, that ultimately results in elimination of mitochondria in the lysosome. Recent Advances: However, while the relationship between mitophagy and ROS production is clearly interwoven, it is yet to be fully untangled. In some circumstances, mitochondrial ROS (mtROS) are elevated as a consequence of mitophagy induction. Critical Issues: In this review, we discuss mtROS generation and their detrimental effects on cellular viability. In addition, we consider the cellular defense mechanisms that the eukaryotic cell uses to abrogate superfluous oxidative stress. In particular, we delve into the prominent mechanisms governing mitophagy induction that bear on oxidative stress. Future Directions: Finally, we examine the pathological conditions associated with defective mitophagy, where additional research may help to facilitate understanding.
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Affiliation(s)
- James H Schofield
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
| | - Zachary T Schafer
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
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25
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Yang RZ, Zheng HL, Xu WN, Zheng XF, Li B, Jiang LS, Jiang SD. Vascular endothelial cell-secreted exosomes facilitate osteoarthritis pathogenesis by promoting chondrocyte apoptosis. Aging (Albany NY) 2021; 13:4647-4662. [PMID: 33526719 PMCID: PMC7906201 DOI: 10.18632/aging.202506] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/09/2020] [Indexed: 04/07/2023]
Abstract
Exosomes are major mediators of cell-to-cell communication, and are involved in many physiological and pathological processes. Recently, the roles of exosomes in osteoarthritis (OA) and their therapeutic potential have received increasing attention. Exosomes derived from vascular endothelial cells have been confirmed to participate in the occurrence and development of numerous diseases; however, their effects in OA have not been reported. Here, we demonstrated the roles of exosomes secreted by vascular endothelial cells in the development of OA. Through in vivo and in vitro experiments, we demonstrated that exosomes derived from vascular endothelial cells decreased the ability of chondrocytes to resist oxidative stress by inhibiting autophagy and p21 expression, thereby increasing the cellular ROS content and inducing apoptosis. These findings indicate that exosomes derived from vascular endothelial cells promote the progression of OA, thus, providing new ideas for the diagnosis and treatment of OA.
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Affiliation(s)
- Run-Ze Yang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Huo-Liang Zheng
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Wen-Ning Xu
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Xin-Feng Zheng
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Bo Li
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Lei-Sheng Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
| | - Sheng-Dan Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200082, China
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26
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Zhu E, Wu H, Chen W, Qin Y, Liu J, Fan S, Ma S, Wu K, Mao Q, Luo C, Qin Y, Yi L, Ding H, Zhao M, Chen J. Classical swine fever virus employs the PERK- and IRE1-dependent autophagy for viral replication in cultured cells. Virulence 2020; 12:130-149. [PMID: 33380286 PMCID: PMC7781608 DOI: 10.1080/21505594.2020.1845040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Endoplasmic reticulum stress (ERS)-mediated autophagy is indispensable for modulation of replication and pathogenesis of numerous mammalian viruses. We have previously shown that classical swine fever virus (CSFV) infection induces ERS-mediated autophagy for maintaining viral replication both in vivo and in vitro, however, the underlying mechanism remains unclarified. Here we found that CSFV infection activates the PERK pathway-dependent complete autophagy to promote viral replication in cultured PK-15 and 3D4/2 cells. Likewise, our results also suggested the essential roles of the IRE1/GRP78-mediated complete autophagy in CSFV replication in vitro. Furthermore, we suggested that CSFV infection induces activation of the PERK and IRE1 pathway for potential immunoregulation via promoting transcription of proinflammatory cytokine (IFN-γ and TNF-α) genes in the CSFV-infected cells. Finally, pharmacological treatment of PERK- or IRE1-pathway regulators, and the corresponding SiRNAs interventions did not affect the viabilities of the cells, excluding the potential interference elicited by altered cell viabilities. Taken together, our results suggest that CSFV infection induces complete autophagy through activation of the PERK and IRE1 pathway to facilitate viral replication in cultured cells, and modulation of proinflammatory cytokines may be a potential mechanism involved in this event. Our findings will open new horizons for molecular mechanisms of sustainable replication and pathogenesis of CSFV, and lay a theoretical foundation for the development of ERS-autophagy-targeting therapeutic strategies for clinical control of CSF.
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Affiliation(s)
- Erpeng Zhu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China.,Department of Veterinary Medicine, College of Animal Science, Guizhou University , Guiyang, China
| | - Huawei Wu
- Department of Viral Biologics, China Institute of Veterinary Drug Control , Beijing, China
| | - Wenxian Chen
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Yuwei Qin
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Jiameng Liu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Shuangqi Fan
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Shengming Ma
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Keke Wu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Qian Mao
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Chaowei Luo
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Yixian Qin
- Department of Viral Biologics, China Institute of Veterinary Drug Control , Beijing, China
| | - Lin Yi
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Hongxing Ding
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Mingqiu Zhao
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
| | - Jinding Chen
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University , Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou, China
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27
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Han L, Ma Q, Yu J, Gong Z, Ma C, Xu Y, Deng G, Wu X. Autophagy plays a protective role during Pseudomonas aeruginosa-induced apoptosis via ROS-MAPK pathway. Innate Immun 2020; 26:580-591. [PMID: 32878509 PMCID: PMC7556189 DOI: 10.1177/1753425920952156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 07/18/2020] [Accepted: 08/03/2020] [Indexed: 12/13/2022] Open
Abstract
Pseudomonas aeruginosa infection can induce alveolar macrophage apoptosis and autophagy, which play a vital role in eliminating pathogens. These two processes are usually not independent. Recently, autophagy has been found to interact with apoptosis during pathogen infections. Nevertheless, the role of autophagy in P. aeruginosa-infected cell apoptosis is unclear. In this study, we explored the impact of P. aeruginosa infection on autophagy and apoptosis in RAW264.7 cells. The autophagy activator rapamycin was used to stimulate autophagy and explore the role of autophagy on apoptosis in P. aeruginosa-infected RAW264.7 cells. The results indicated that P. aeruginosa infection induced autophagy and apoptosis in RAW264.7 cells, and that rapamycin could suppress P. aeruginosa-induced apoptosis by regulating the expression of apoptosis-related proteins. In addition, rapamycin scavenged the cellular reactive oxygen species (ROS) and diminished p-JNK, p-ERK1/2 and p-p38 expression of MAPK pathways in RAW264.7 cells infected with P. aeruginosa. In conclusion, the promotion of autophagy decreased P. aeruginosa-induced ROS accumulation and further attenuated the apoptosis of RAW264.7 cells through MAPK pathway. These results provide novel insights into host-pathogen interactions and highlight a potential role of autophagy in eliminating P. aeruginosa.
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Affiliation(s)
- Lu Han
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Qinmei Ma
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Jialin Yu
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Zhaoqian Gong
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Chenjie Ma
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Yanan Xu
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Guangcun Deng
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
| | - Xiaoling Wu
- Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in western China, NingXia University, NingXia, Yinchuan, China
- School of Life Science, NingXia University, NingXia, Yinchuan, China
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28
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Zhao MM, Wang RS, Zhou YL, Yang ZG. Emerging relationship between RNA helicases and autophagy. J Zhejiang Univ Sci B 2020; 21:767-778. [PMID: 33043643 PMCID: PMC7606199 DOI: 10.1631/jzus.b2000245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 08/10/2020] [Indexed: 01/15/2023]
Abstract
RNA helicases, the largest family of proteins that participate in RNA metabolism, stabilize the intracellular environment through various processes, such as translation and pre-RNA splicing. These proteins are also involved in some diseases, such as cancers and viral diseases. Autophagy, a self-digestive and cytoprotective trafficking process in which superfluous organelles and cellular garbage are degraded to stabilize the internal environment or maintain basic cellular survival, is associated with human diseases. Interestingly, similar to autophagy, RNA helicases play important roles in maintaining cellular homeostasis and are related to many types of diseases. According to recent studies, RNA helicases are closely related to autophagy, participate in regulating autophagy, or serve as a bridge between autophagy and other cellular activities that widely regulate some pathophysiological processes or the development and progression of diseases. Here, we summarize the most recent studies to understand how RNA helicases function as regulatory proteins and determine their association with autophagy in various diseases.
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Affiliation(s)
- Miao-miao Zhao
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
| | - Ru-sha Wang
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
| | - Yan-lin Zhou
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310006, China
| | - Zheng-gang Yang
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310003, China
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29
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Fan S, Wu K, Zhao M, Yuan J, Ma S, Zhu E, Chen Y, Ding H, Yi L, Chen J. LDHB inhibition induces mitophagy and facilitates the progression of CSFV infection. Autophagy 2020; 17:2305-2324. [PMID: 32924761 DOI: 10.1080/15548627.2020.1823123] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Cellular metabolism caters to the energy and metabolite needs of cells. Although the role of the terminal metabolic enzyme LDHB (lactate dehydrogenase B) in the glycolysis pathway has been widely studied in cancer cells, its role in viral infection is relatively unknown. In this study, we found that CSFV (classical swine fever virus) infection reduces pyruvate levels while promotes lactate release in pigs and in PK-15 cells. Moreover, using a yeast two-hybrid screening system, we identified LDHB as a novel interacting partner of CSFV non-structural protein NS3. These results were confirmed via co-immunoprecipitation, glutathione S-transferase and confocal assays. Furthermore, knockdown of LDHB via interfering RNA induced mitochondrial fission and mitophagy, as detected reduced mitochondrial mass. Upon inhibition of LDHB, expression of the mitophagy proteins TOMM20 and VDAC1 decreased and the ubiquitination of MFN2, a mitochondrial fusion mediator, was promoted. In addition, a sensitive dual fluorescence reporter (mito-mRFP-EGFP) was utilized to analyze the delivery of autophagosomes to lysosomes in LDHB inhibition cells. Furthermore, LDHB inhibition promoted NFKB signaling, which was regulated by mitophagy; meanwhile, infection with CSFV negated these NFKB anti-viral responses. Inhibition of LDHB also inhibited apoptosis, providing an environment conducive to persistent viral infection. Finally, we demonstrated that LDHB inhibition promoted CSFV growth via mitophagy, whereas its overexpression decreased CSFV replication. Our data revealed a novel mechanism through which LDHB, a metabolic enzyme, mediates CSFV infection, and provides new avenues for the development of anti-viral strategies.Abbreviations: 3-MA:3-methyladenine; CCCP:carbonyl cyanide 3-chlorophenylhydrazone; CCK-8:cell counting kit-8; CSFV:classical swine fever virus; DAPI:4',6-diamidino-2-phenylindole; DMSO:dimethyl sulfoxide; EGFP:enhanced green fluorescent protein; FBS:fetal bovine serum; FITC:fluorescein isothiocyanate; GST:glutathione-S-transferase; HCV:hepatitis C virus; IFN:interferon; LDH:lactate dehydrogenase; MAP1LC3/LC3:microtubule associated protein 1 light chain 3; MFN2:mitofusin 2; MOI:multiplicity of infection; NFKB:nuclear factor kappa B subunit 1; NFKBIA:nuclear factor inhibitor alpha; NS3:nonstructural protein 3; NKIRAS2:NFKB inhibitor interacting Ras like 2; PRKN:parkin E3 ubiquitin protein ligase; PBS:phosphate-buffered saline; qRT-PCR:real-time quantitative reverse transcriptase polymerase chain reaction; RELA:RELA proto-oncogene, NF-kB subunit; shRNA: short hairpin RNA; siRNA: small interfering RNA; TCID50:50% tissue culture infectious doses; TEM:transmission electron microscopy; TNF:tumor necrosis factor; TOMM20:translocase of outer mitochondrial membrane 20; VDAC1:voltage dependent anion channel 1.
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Affiliation(s)
- Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jin Yuan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Shengming Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Erpeng Zhu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Yuming Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
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30
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Pinto DO, DeMarino C, Vo TT, Cowen M, Kim Y, Pleet ML, Barclay RA, Noren Hooten N, Evans MK, Heredia A, Batrakova EV, Iordanskiy S, Kashanchi F. Low-Level Ionizing Radiation Induces Selective Killing of HIV-1-Infected Cells with Reversal of Cytokine Induction Using mTOR Inhibitors. Viruses 2020; 12:v12080885. [PMID: 32823598 PMCID: PMC7472203 DOI: 10.3390/v12080885] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/12/2022] Open
Abstract
HIV-1 infects 39.5 million people worldwide, and cART is effective in preventing viral spread by reducing HIV-1 plasma viral loads to undetectable levels. However, viral reservoirs persist by mechanisms, including the inhibition of autophagy by HIV-1 proteins (i.e., Nef and Tat). HIV-1 reservoirs can be targeted by the “shock and kill” strategy, which utilizes latency-reversing agents (LRAs) to activate latent proviruses and immunotarget the virus-producing cells. Yet, limitations include reduced LRA permeability across anatomical barriers and immune hyper-activation. Ionizing radiation (IR) induces effective viral activation across anatomical barriers. Like other LRAs, IR may cause inflammation and modulate the secretion of extracellular vesicles (EVs). We and others have shown that cells may secrete cytokines and viral proteins in EVs and, therefore, LRAs may contribute to inflammatory EVs. In the present study, we mitigated the effects of IR-induced inflammatory EVs (i.e., TNF-α), through the use of mTOR inhibitors (mTORi; Rapamycin and INK128). Further, mTORi were found to enhance the selective killing of HIV-1-infected myeloid and T-cell reservoirs at the exclusion of uninfected cells, potentially via inhibition of viral transcription/translation and induction of autophagy. Collectively, the proposed regimen using cART, IR, and mTORi presents a novel approach allowing for the targeting of viral reservoirs, prevention of immune hyper-activation, and selectively killing latently infected HIV-1 cells.
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Affiliation(s)
- Daniel O. Pinto
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Catherine DeMarino
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Thy T. Vo
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Maria Cowen
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Yuriy Kim
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Michelle L. Pleet
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Robert A. Barclay
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
| | - Nicole Noren Hooten
- Laboratory of Epidemiology and Population Science, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; (N.N.H.); (M.K.E.)
| | - Michele K. Evans
- Laboratory of Epidemiology and Population Science, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; (N.N.H.); (M.K.E.)
| | - Alonso Heredia
- Institute of Human Virology, University of Maryland School of Medicine, University of Maryland, Baltimore, MD 21201, USA;
| | - Elena V. Batrakova
- Department of Medicine, University of North Carolina HIV Cure Center; University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA;
| | - Sergey Iordanskiy
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA;
| | - Fatah Kashanchi
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA 20110, USA; (D.O.P.); (C.D.); (T.T.V.); (M.C.); (Y.K.); (M.L.P.); (R.A.B.)
- Correspondence: ; Tel.: +703-993-9160; Fax: +703-993-7022
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31
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Deng BB, Jiao BP, Liu YJ, Li YR, Wang GJ. BIX-01294 enhanced chemotherapy effect in gastric cancer by inducing GSDME-mediated pyroptosis. Cell Biol Int 2020; 44:1890-1899. [PMID: 32437063 PMCID: PMC7496303 DOI: 10.1002/cbin.11395] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/10/2020] [Accepted: 05/18/2020] [Indexed: 12/22/2022]
Abstract
Adjuvant chemotherapy in combination with surgery is expected to be a curative strategy for gastric cancer. However, drug resistance remains an obstacle in effective chemotherapy. Therefore, understanding the potential mechanisms of chemotherapy induced gastric cancer cell death is of great importance. We demonstrated that BIX-01294 (BIX) at low concentration could induce autophagic flux by converting LC3B-I to LC3B-II and directly activate autophagy associated cell death in gastric cancer cell lines at high concentration. BIX at low concentration could help obtain sensitivity of gastric cancer cells to chemotherapy with significantly reduced cell viability. Interestingly, BIX combined Cis (BIX + Cis) treated SGC-7901 cells display pyroptosis related cell death with large bubbles blown around the membrane, significantly decreased cell viability, elevated lactate dehydrogenase release and increased percentage of propidium iodide and Annexin-V double positive cells. Furthermore, the cleavage of gasdermin E (GSDME) and caspase-3 but not GSDMD was detected by immunoblotting and the knockout of GSDME switched pyroptosis into apoptosis in the BIX + Cis combined treated group. Furthermore, the deficiency of Beclin-1 to inhibit BIX induced autophagic flux completely blocked BIX + Cis combined treated induced cell pyroptosis related cell death. Additionally, BIX + Cis in vivo treatment could inhibit tumor growth, which could be reversed by the deficiency of Beclin-1 and be delayed by the deficiency of GSDME. In conclusion, our data was the first to reveal that BIX enhanced the anticancer chemotherapy effect by induced GSDME-mediated pyroptosis through the activation of autophagic flux in gastric cancer cells.
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Affiliation(s)
- Bei-Bei Deng
- Department of Clinical Laboratory, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Bao-Ping Jiao
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Yang-Jun Liu
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Yan-Rong Li
- Department of Gastroenterology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Gui-Jun Wang
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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32
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Chen Y, Fan S, Zhao M, Wu K, Zhu E, Ma S, He W, Deng S, Xu H, Zhang J, Ding H, Yi L, Zhao M, Chen J. MG132 Attenuates the Replication of Classical Swine Fever Virus in vitro. Front Microbiol 2020; 11:852. [PMID: 32582037 PMCID: PMC7283581 DOI: 10.3389/fmicb.2020.00852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 04/09/2020] [Indexed: 12/21/2022] Open
Abstract
The 26S proteasome, in charge of intracellular protein degradation, plays significant roles in the modulation of various cellular activities as well as in the interplay between virus and host. However, studies about the relationship between 26S proteasome and classical swine fever virus (CSFV) is limited up to now. MG132 is a proteasome inhibitor and has been extensively used in studies about replication of many viruses. Herein, we investigated the role of MG132 in CSFV replication and results showed that MG132 significantly decreased virus titers and viral RNA copies in CSFV-infected PK-15 cells. Further studies demonstrated that MG132 upregulated the expression of several interferon-stimulated genes (ISGs), in CSFV-infected cells. Since the activation of ISGs is controlled by the JAK-STAT signal pathway, we next examined the effect of MG132 on the expression and localization of key molecular STAT1 in the infected cells using Western blot and confocal laser scanning microscopy, respectively. Results showed that CSFV infection and viral NS4A protein decreased the protein level of STAT1, and MG132 promoted the accumulation of STAT1 in the nucleus of cells adjacent to the CSFV-infected cells. Besides, MG132 did not affect the expressions of IFN-α, STAT1, Mx1, OAS1, and PKR genes in cells without CSFV. In conclusion, we identify that MG132 significantly inhibits CSFV replication in vitro, in which the activation of the JAK-STAT pathway and the subsequent upregulation of expressions of ISGs might play significant roles, providing a potential preventive method for CSF.
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Affiliation(s)
- Yuming Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Mengpo Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Erpeng Zhu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shengming Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Wencheng He
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Shaofeng Deng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Hailuan Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Jingyuan Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
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Zhang X, Wang LL, Wang B, Liu HL, Zhang J, Li YH, Wang LH. Effect of siRNA-induced Atg7 gene silencing on the sensitivity of ovarian cancer SKOV3 cells to cisplatin. Am J Transl Res 2020; 12:2052-2061. [PMID: 32509199 PMCID: PMC7269981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Ovarian cancer is one of the most common types of gynecological malignant tumors. A proclivity for, or the development of chemoresistance severely affects treatment efficacy for ovarian cancer. Herein we found that as concentrations of cisplatin (DDP) used in SKOV3 cells increased, expression of intracellular reactive oxygen species (ROS) increased as did amounts of proteins of Beclin-1 and Autophagy-Related Gene 7 (Atg7) whereas in contrast, expression of P62 protein decreased gradually. Expression of Atg7 protein in SKOV3 cells in the siRNA-Atg7 transfection treatment group was significantly reduced compared to the negative control group. Post-application of DDP treatments, the apoptotic ratio of SKOV3 cells in the siRNA-Atg7 transfection group increased, and the cell survival rate decreased to a level significantly lower than in the negative control group. Cellular morphological analyses revealed remarkably decreased measures of cell density, as well as shrunk, deformed, and rounded cells with unclear boundaries, and revealed a decreased measures of mitochondrial membrane potential. Taken together, autophagy may be involved in the dynamics and mechanistics underlying DDP resistance in ovarian cancer SKOV3 cells. Thus, inhibition of autophagy through down-regulation expression of Atg7 may have beneficially enhanced the sensitivity of SKOV3 cells to DDP-based chemotherapy which could help improve treatment outcomes for patients afflicted by ovarian cancer.
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Affiliation(s)
- Xuan Zhang
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Liang-Liang Wang
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Beibei Wang
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Hong-Li Liu
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Jing Zhang
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Yan-Hua Li
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
| | - Li-Hua Wang
- Department of Oncological Gynecology, First Affiliated Hospital of Bengbu Medical College Bengbu 233000, China
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Huang S, Kong A, Cao Q, Tong Z, Wang X. The role of blood vessels in broiler chickens with tibial dyschondroplasia. Poult Sci 2020; 98:6527-6532. [PMID: 31433842 PMCID: PMC8913930 DOI: 10.3382/ps/pez497] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/07/2019] [Indexed: 12/11/2022] Open
Abstract
Tibial dyschondroplasia (TD) is an intractable tibiotarsal bone disorder of rapid growing avian species, which leads to huge economic losses and compromised poultry welfare. However, the exact pathogenesis and treatment of TD remain largely unknown. Based on continuous research findings, we propose the TD pathogenesis hypothesis: during skeletal development of TD chickens, due to the absence of vasculature of proximal tibial growth plates (TGP), hypertrophic chondrocytes of the TGP are unable to complete calcification in normal bone development and less dead chondrocytes in the corresponding area can be timely transported through the blood vessels. Moreover, recent studies demonstrate that the TD formation mechanism gradually tends to a large number of dead chondrocytes in the TGP region or apoptosis occur due to various factors (such as, reduction of vascular invasion and blood cells, and increased weight or mechanical force of the tibia), while the reduction of blood vessels is insufficient to remove these chondrocytes and eventually leads to the TD formation. Recognizing the possible role of the blood vessels in the incidence of TD and can propose that the improvement in vasculature might be a novel therapeutic approach for ending TD in chickens.
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Affiliation(s)
- Shucheng Huang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Anan Kong
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Qinqin Cao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Zongxi Tong
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Xuebing Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
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Xie B, Zhao M, Song D, Wu K, Yi L, Li W, Li X, Wang K, Chen J. Induction of autophagy and suppression of type I IFN secretion by CSFV. Autophagy 2020; 17:925-947. [PMID: 32160078 DOI: 10.1080/15548627.2020.1739445] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Macroautophagy/autophagy plays an essential role in cellular responses to pathogens. However, the precise mechanisms and signaling pathways that modulate cellular autophagy in classical swine fever virus (CSFV)-infected host cells have not been confirmed. In this study, we showed that CSFV infection inhibits the phosphorylation of MTOR (mechanistic target of rapamycin kinase), subsequently leading to autophagy initiation. We also show that MAPK/ERK (mitogen-activated protein kinase) signaling is involved in CSFV-induced autophagy. The CSFV-induced inhibition of AKT/PKB (AKT serine/threonine kinase)-MTOR was observed to be partially responsible for the MTOR inactivation and subsequent autophagy initiation. Moreover, the CAMKK2/CaMKKβ (calcium/calmodulin dependent protein kinase kinase 2)-PRKAA/AMPK (protein kinase AMP-activated catalytic subunit alpha) axis was found to be involved in CSFV-induced autophagy. Meanwhile, CSFV non-structural protein NS5A induced autophagy via the CAMKK2-PRKAA-MTOR signaling pathway but not the AKT-MTOR or MAPK1/ERK2-MAPK3/ERK1-MTOR pathway. Although the AKT-MTOR pathway also plays an important role in the induction of autophagy by CSFV. We also found the interaction between HSP90AB1/HSPCB and NS5A by tandem affinity purification/liquid chromatography-mass spectrometry (LC-MS) and immunoprecipitation. Furthermore, the CSFV-induced [Ca2+]cyto increase potently induced autophagy through CAMKK2 and PRKAA. Moreover, we isolated and identified the BECN1/Beclin 1 protein complexes by tandem affinity purification/LC-MS and immunoprecipitation, the interaction between BECN1 and MAVS was confirmed by immunoprecipitation, laser scanning confocal microscope technology, and GST affinity-isolation experiments. Furthermore, CSFV-mediated autophagy suppressing type I IFN production is related to the interaction between MAVS and BECN1. Finally, the modulation of autophagy induction pathways by different autophagy regulatory factors significantly affected the replication of CSFV.Abbreviations: AKT: AKT serine/threonine kinase; AMPK: Adenosine monophosphate-activated protein kinase; CAMKK2: Calcium/calmodulin dependent protein kinase kinase 2; CSFV: Classical swine fever virus; HRP: Horseradish peroxidase; HSP90AB1: Heat shock protein 90 alpha family class B member 1; IFN: Interferon; ISGs: IFN-stimulated genes; LC-MS: Liquid chromatography-mass spectrometry; MAP1LC3/LC3: Microtubule associated protein 1 light chain 3; MAPK: Mitogen-activated protein kinase; MAVS: Mitochondrial antiviral signaling protein; MOI: Multiplicity of infection; MTOR: Mechanistic target of rapamycin kinase; PBS: Phosphate-buffered saline; PRKAA: Protein kinase AMP-activated catalytic subunit alpha; shRNA: short hairpin RNA.
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Affiliation(s)
- Baoming Xie
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mingqiu Zhao
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Dan Song
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Keke Wu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lin Yi
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenhui Li
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiaoming Li
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Kun Wang
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jinding Chen
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Laboratory for Lingnan Modern Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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The Role of Autophagy and Autophagy Receptor NDP52 in Microbial Infections. Int J Mol Sci 2020; 21:ijms21062008. [PMID: 32187990 PMCID: PMC7139735 DOI: 10.3390/ijms21062008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/05/2020] [Accepted: 03/12/2020] [Indexed: 01/04/2023] Open
Abstract
Autophagy is a general protective mechanism for maintaining homeostasis in eukaryotic cells, regulating cellular metabolism, and promoting cell survival by degrading and recycling cellular components under stress conditions. The degradation pathway that is mediated by autophagy receptors is called selective autophagy, also named as xenophagy. Autophagy receptor NDP52 acts as a ‘bridge’ between autophagy and the ubiquitin-proteasome system, and it also plays an important role in the process of selective autophagy. Pathogenic microbial infections cause various diseases in both humans and animals, posing a great threat to public health. Increasing evidence has revealed that autophagy and autophagy receptors are involved in the life cycle of pathogenic microbial infections. The interaction between autophagy receptor and pathogenic microorganism not only affects the replication of these microorganisms in the host cell, but it also affects the host’s immune system. This review aims to discuss the effects of autophagy on pathogenic microbial infection and replication, and summarizes the mechanisms by which autophagy receptors interact with microorganisms. While considering the role of autophagy receptors in microbial infection, NDP52 might be a potential target for developing effective therapies to treat pathogenic microbial infections.
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Liu W, Jin Y, Zhang W, Xiang Y, Jia P, Yi M, Jia K. MiR-202-5p Inhibits RIG-I-Dependent Innate Immune Responses to RGNNV Infection by Targeting TRIM25 to Mediate RIG-I Ubiquitination. Viruses 2020; 12:v12030261. [PMID: 32120903 PMCID: PMC7150862 DOI: 10.3390/v12030261] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/23/2020] [Accepted: 02/25/2020] [Indexed: 12/20/2022] Open
Abstract
The RIG-I-like receptors (RLRs) signaling pathway is essential for inducing type I interferon (IFN) responses to viral infections. Meanwhile, it is also tightly regulated to prevent uncontrolled immune responses. Numerous studies have shown that microRNAs (miRNAs) are essential for the regulation of immune processes, however, the detailed molecular mechanism of miRNA regulating the RLRs signaling pathway remains to be elucidated. Here, our results showed that miR-202-5p was induced by red spotted grouper nervous necrosis virus (RGNNV) infection in zebrafish. Overexpression of miR-202-5p led to reduced expression of IFN 1 and its downstream antiviral genes, thus facilitating viral replication in vitro. In comparison, significantly enhanced levels of IFN 1 and antiviral genes and significantly low viral burden were observed in the miR-202-5p-/- zebrafish compared to wild type zebrafish. Subsequently, zebrafish tripartite motif-containing protein 25 (zbTRIM25) was identified as a target of miR-202-5p in both zebrafish and humans. Ectopic expression of miR-202-5p suppressed zbTRIM25-mediated RLRs signaling pathway. Furthermore, we showed that miR-202-5p inhibited zbTRIM25-mediated zbRIG-I ubiquitination and activation of IFN production. In conclusion, we demonstrate that RGNNV-inducible miR-202-5p acts as a negative regulator of zbRIG-I-triggered antiviral innate response by targeting zbTRIM25. Our study reveals a novel mechanism for the evasion of the innate immune response controlled by RGNNV.
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Affiliation(s)
- Wei Liu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Yilin Jin
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Wanwan Zhang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Yangxi Xiang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Peng Jia
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Meisheng Yi
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
| | - Kuntong Jia
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangdong 510275, China
- Correspondence:
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Zhu L, Zang J, Liu B, Yu G, Hao L, Liu L, Zhong J. Oxidative stress-induced RAC autophagy can improve the HUVEC functions by releasing exosomes. J Cell Physiol 2020; 235:7392-7409. [PMID: 32096219 PMCID: PMC7496456 DOI: 10.1002/jcp.29641] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 02/04/2020] [Indexed: 12/20/2022]
Abstract
Retinal neovascularization (RNV) is a common pathological feature in many kinds of fundus oculi diseases. Sometimes RNV can even lead to severe vision loss. Oxidative injury is one of the main predisposing factors for RNV occurrence and development. The specific mechanism may be closely related to the special structural tissues of the retina. Retinal astrocytes (RACs) are mesenchymal cells located in the retinal neuroepithelial layer. RACs have an intimate anatomical relationship with microvascular endothelial cells. They have a variety of functions, but little is known about the mechanisms by which RACs regulate the function of endothelial cells. The molecules secreted by RACs, such as exosomes, have recently received a lot of attention and may provide potential clues to address the RAC‐mediated modulation of endothelial cells. In this study, we aimed to preliminarily explore the mechanisms of how RAC exosomes generated under oxidative stress are involved in the regulation of endothelial function. Our results showed that the apoptosis and autophagy levels in RACs were positively correlated with the oxidative stress level, and the exosomes generated from RACs under normal and oxidative stress conditions had different effects on the proliferation and migration of endothelial cells. However, the effect of RACs on endothelial cell function could be markedly reversed by the autophagy inhibitor 3‐methyladenine or the exosome inhibitor GW4869. Therefore, oxidative stress can lead to increased autophagy in RACs and can further promote RACs to regulate endothelial cell function by releasing exosomes. tBHP‐induced oxidative stress can increase the level of autophagy in retinal (RAC) astrocytes. RAC with high‐autophagy level has a completely opposite effect on HUVEC functions when compared with normal RAC. RACs under different states have different effects on endothelial cell functions by releasing exosomes
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Affiliation(s)
- Linxin Zhu
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jiankun Zang
- Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Bing Liu
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Guocheng Yu
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Lili Hao
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Lian Liu
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jingxiang Zhong
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, China
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Fan S, Wu K, Luo C, Li X, Zhao M, Song D, Ma S, Zhu E, Chen Y, Ding H, Yi L, Li J, Zhao M, Chen J. Dual NDP52 Function in Persistent CSFV Infection. Front Microbiol 2020; 10:2962. [PMID: 31969869 PMCID: PMC6960106 DOI: 10.3389/fmicb.2019.02962] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 12/09/2019] [Indexed: 12/16/2022] Open
Abstract
Viruses have evolved many mechanisms to escape host antiviral responses. Previously, we found that classical swine fever virus (CSFV) infection induces autophagy using the autophagosome as a self-replication site, thereby evading the host immune response and promoting long-term infection. However, the underlying mechanisms used by CSFV to enter autophagosomes and the mechanism by which autophagy promotes viral replication remain unclear. We found that CSFV infection inhibited autophagy receptor nuclear dot protein 52 kDa (NDP52) expression, ubiquitination, and SUMO2-4 modification. Further analyses revealed that CSFV mediated ubiquitination and SUMOylation of NDP52 via Pten-induced kinase 1 (PINK1)-Parkin. Moreover, NDP52 inhibition also inhibited CSFV replication and the induction of mitophagy marker proteins expression. Inhibition of NDP52 reduced CD63 expression and binding to CSFV E2 protein, which has an essential role in persistent CSFV infection. As NDP52 has a close relationship with the NF-κB innate immunity pathway and plays an important role in the antiviral response, we investigated whether NDP52 inhibited CSFV replication through the release of immune factors and antivirus signals. Our results showed that inhibiting NDP52 boosted interferon and TNF release and promoted NF-κB pathway activation. In summary, we found that NDP52 inhibition not only reduces CSFV binding and entry into autophagic vesicles, but also inhibits CSFV replication by active NF-κB antiviral immune pathways. Our data reveal a novel mechanism by which NDP52, an autophagy receptor, mediates CSFV infection, and provide new avenues for the development of antiviral strategies.
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Affiliation(s)
- Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Chaowei Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xin Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mengpo Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Dan Song
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Shengming Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Erpeng Zhu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yuming Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Hongxing Ding
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lin Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jun Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mingqiu Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Deng H, Ma J, Liu Y, He P, Dong W. Combining α-Hederin with cisplatin increases the apoptosis of gastric cancer in vivo and in vitro via mitochondrial related apoptosis pathway. Biomed Pharmacother 2019; 120:109477. [DOI: 10.1016/j.biopha.2019.109477] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/18/2019] [Accepted: 09/18/2019] [Indexed: 02/07/2023] Open
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Ma SM, Mao Q, Yi L, Zhao MQ, Chen JD. Apoptosis, Autophagy, and Pyroptosis: Immune Escape Strategies for Persistent Infection and Pathogenesis of Classical Swine Fever Virus. Pathogens 2019; 8:pathogens8040239. [PMID: 31744077 PMCID: PMC6963731 DOI: 10.3390/pathogens8040239] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 01/21/2023] Open
Abstract
Classical swine fever (CSF) is a severe acute infectious disease that results from classical swine fever virus (CSFV) infection, which leads to serious economic losses in the porcine industry worldwide. In recent years, numerous studies related to the immune escape mechanism of the persistent infection and pathogenesis of CSFV have been performed. Remarkably, several independent groups have reported that apoptosis, autophagy, and pyroptosis play a significant role in the occurrence and development of CSF, as well as in the immunological process. Apoptosis, autophagy, and pyroptosis are the fundamental biological processes that maintain normal homeostatic and metabolic function in eukaryotic organisms. In general, these three cellular biological processes are always understood as an immune defense response initiated by the organism after perceiving a pathogen infection. Nevertheless, several viruses, including CSFV and other common pathogens such as hepatitis C and influenza A, have evolved strategies for infection and replication using these three cellular biological process mechanisms. In this review, we summarize the known roles of apoptosis, autophagy, and pyroptosis in CSFV infection and how viruses manipulate these three cellular biological processes to evade the immune response.
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Zhu E, Chen W, Qin Y, Ma S, Fan S, Wu K, Li W, Fan J, Yi L, Ding H, Chen J, Zhao M. Classical Swine Fever Virus Infection Induces Endoplasmic Reticulum Stress-Mediated Autophagy to Sustain Viral Replication in vivo and in vitro. Front Microbiol 2019; 10:2545. [PMID: 31798542 PMCID: PMC6861840 DOI: 10.3389/fmicb.2019.02545] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 10/22/2019] [Indexed: 01/10/2023] Open
Abstract
Endoplasmic reticulum (ER) stress-mediated autophagy plays significant roles in replication and pathogenesis of many animal viruses. However, the relationship between ER stress, autophagy, and viral replication during in vivo and in vitro infection of classical swine fever virus (CSFV) remains unclear. In this study, we established a pig model for CSFV infection and found that viral loads of CSFV differed in 10 kinds of infected organs, and that the degree of tissue lesions was to some extent positively correlated with CSFV replication in vivo. Next, we found that CSFV infection not only induced ER stress and subsequently activated three unfolded protein responses (UPR) pathways including protein kinase R-like ER kinase (PERK), inositol requiring enzyme 1 (IRE1), and activating transcription factor-6 (ATF-6) pathways, but also triggered complete autophagy in main immune organs and partial nonimmune organs exhibiting severer pathological injuries and higher viral loads. However, only the IRE1 pathway and no autophagy were activated in some other nonimmune organs with slighter pathologies and lower viral loads. These results indicate a potential link between CSFV-induced ER stress and autophagy, both of which are associated with the CSFV replication in vivo. We further performed in vitro experiments and found that CSFV infection activates the PERK and IRE1 pathways and autophagy in cultured porcine kidney cell lines (PK-15) and macrophage cell lines (3D4/2), and pharmacological regulation of ER stress remarkably changed autophagic activities induced by CSFV, suggesting that CSFV-induced autophagy can be mediated by ER stress possibly via the PERK and IRE1 pathway. Furthermore, treatment with ER stress regulators significantly altered copy numbers of NS5B genes, expression of Npro proteins, and viral titers in CSFV-infected cells or in cells treated with autophagy regulators prior to CSFV infection, suggesting the requirement of ER stress-mediated autophagy for CSFV replication in vitro. Collectively, our data demonstrate that CSFV induces ER stress-mediated autophagy to sustain its replication in vivo and in vitro, which may be one of the potential strategies exploited by CSFV for immune evasion. This finding will provide new insights into mechanisms of replication and pathogenesis of CSFV, and development of new strategies for controlling CSF.
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Affiliation(s)
- Erpeng Zhu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenxian Chen
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yuwei Qin
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Shengming Ma
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Shuangqi Fan
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Keke Wu
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenhui Li
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jindai Fan
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lin Yi
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Hongxing Ding
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jinding Chen
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mingqiu Zhao
- Department of Microbiology and Immunology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Itakura Y, Matsuno K, Ito A, Gerber M, Liniger M, Fujimoto Y, Tamura T, Kameyama KI, Okamatsu M, Ruggli N, Kida H, Sakoda Y. A cloned classical swine fever virus derived from the vaccine strain GPE - causes cytopathic effect in CPK-NS cells via type-I interferon-dependent necroptosis. Virus Res 2019; 276:197809. [PMID: 31715204 DOI: 10.1016/j.virusres.2019.197809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 01/03/2023]
Abstract
Classical swine fever viruses (CSFVs) do typically not show cytopathic effect (CPE) in cell culture, while some strains such as vaccine strain the GPE- induce CPE in the swine kidney-derived CPK-NS cell line cultured in serum-free medium. These latter strains commonly lack Npro-mediated inhibition of type-I interferon (IFN) induction. In order to explore the molecular mechanisms of GPE--induced CPE, we analyzed the cellular pathways involved. In CPK-NS cells infected with the attenuated-vaccine-derived vGPE- strain, both, apoptosis and necroptosis were induced. Necroptosis was type-I IFN-dependent and critical for visible CPE. In contrast, the parental virulent vALD-A76 strain did not induce any of these pathways nor CPE. We used reverse genetics to investigate which viral factors regulate these cell-death pathways. Interestingly, a mutant vGPE- in which the Npro function was restored to inhibit type-I IFN induction did not induce necroptosis nor CPE but still induced apoptosis, while an Npro-mutant vALD-A76 incapable of inhibiting type-I IFN production induced necroptosis and CPE. Although Erns of CSFV is reportedly involved in controlling apoptosis, apoptosis induction by vGPE- or apoptosis inhibition by vALD-A76 were independent of the unique amino acid difference found in Erns of these two strains. Altogether, these results demonstrate that type-I IFN-dependent necroptosis related to non-functional Npro is the main mechanism for CPE induction by vGPE-, and that viral factor(s) other than Erns may induce or inhibit apoptosis in vGPE- or vALD-A76 infected CPK-NS cells, respectively.
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Affiliation(s)
- Yukari Itakura
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan; Global Station for Zoonotic Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan
| | - Asako Ito
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Markus Gerber
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, University of Bern, Bern, Switzerland
| | - Matthias Liniger
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, University of Bern, Bern, Switzerland
| | - Yuri Fujimoto
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Tomokazu Tamura
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Ken-Ichiro Kameyama
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Nicolas Ruggli
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, University of Bern, Bern, Switzerland
| | - Hiroshi Kida
- Global Station for Zoonotic Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan; Laboratory of Biologics Development, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan; Global Station for Zoonotic Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan.
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Jiang QX. Structural Variability in the RLR-MAVS Pathway and Sensitive Detection of Viral RNAs. Med Chem 2019; 15:443-458. [PMID: 30569868 DOI: 10.2174/1573406415666181219101613] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/23/2018] [Accepted: 12/12/2018] [Indexed: 12/25/2022]
Abstract
Cells need high-sensitivity detection of non-self molecules in order to fight against pathogens. These cellular sensors are thus of significant importance to medicinal purposes, especially for treating novel emerging pathogens. RIG-I-like receptors (RLRs) are intracellular sensors for viral RNAs (vRNAs). Their active forms activate mitochondrial antiviral signaling protein (MAVS) and trigger downstream immune responses against viral infection. Functional and structural studies of the RLR-MAVS signaling pathway have revealed significant supramolecular variability in the past few years, which revealed different aspects of the functional signaling pathway. Here I will discuss the molecular events of RLR-MAVS pathway from the angle of detecting single copy or a very low copy number of vRNAs in the presence of non-specific competition from cytosolic RNAs, and review key structural variability in the RLR / vRNA complexes, the MAVS helical polymers, and the adapter-mediated interactions between the active RLR / vRNA complex and the inactive MAVS in triggering the initiation of the MAVS filaments. These structural variations may not be exclusive to each other, but instead may reflect the adaptation of the signaling pathways to different conditions or reach different levels of sensitivity in its response to exogenous vRNAs.
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Affiliation(s)
- Qiu-Xing Jiang
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, United States
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45
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Chen X, Wang L, Deng Y, Li X, Li G, Zhou J, Cheng D, Yang Y, Yang Q, Chen G, Wang G. Inhibition of Autophagy Prolongs Recipient Survival Through Promoting CD8 + T Cell Apoptosis in a Rat Liver Transplantation Model. Front Immunol 2019; 10:1356. [PMID: 31258533 PMCID: PMC6587890 DOI: 10.3389/fimmu.2019.01356] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 05/29/2019] [Indexed: 12/13/2022] Open
Abstract
In liver transplantation (LT), although various immunosuppressants have been used in clinical practice, acute rejection remains a common complication that significantly shortens recipient survival. In recent years, manipulating immune tolerance has been regarded as one of the promising solutions to rejection. Autophagy, an evolutionarily conserved protein degradation system, has been reported to be involved in immune rejection and may be a target to establish immune tolerance. However, the role of autophagy in acute rejection reaction after LT has not been elucidated. Here, we showed that the autophagy of CD8+ T cells was strongly enhanced in patients with graft rejection and that the autophagy level was positively correlated with the severity of rejection. Similar findings were observed in a rat acute hepatic rejection model. Furthermore, administration of the autophagy inhibitor 3-methyladenine (3-MA) largely decreased the viability and function of CD8+ T cells through inhibiting autophagy, which significantly prolonged graft survival in rats. In addition, inhibiting the autophagy of activated CD8+ T cells in vitro considerably suppressed mitochondria mediated survival and downregulated T cell function. Conclusions: We first showed that the inhibition of autophagy significantly prolongs liver allograft survival by promoting the apoptosis of CD8+ T cells, which may provide a novel strategy for immune tolerance induction.
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Affiliation(s)
- Xiaolong Chen
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Li Wang
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yinan Deng
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xuejiao Li
- Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Guolin Li
- Department of Biliary and Pancreatic Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jing Zhou
- Department of Pathology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Daorou Cheng
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yang Yang
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qing Yang
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Guihua Chen
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Genshu Wang
- Department of Hepatic Surgery, Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Xing JJ, Hou JG, Ma ZN, Wang Z, Ren S, Wang YP, Liu WC, Chen C, Li W. Ginsenoside Rb3 provides protective effects against cisplatin-induced nephrotoxicity via regulation of AMPK-/mTOR-mediated autophagy and inhibition of apoptosis in vitro and in vivo. Cell Prolif 2019; 52:e12627. [PMID: 31094028 PMCID: PMC6668974 DOI: 10.1111/cpr.12627] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/05/2019] [Accepted: 03/21/2019] [Indexed: 12/28/2022] Open
Abstract
Objectives Based on previous reports that ginsenosides have been shown to exert better preventive effects on cisplatin‐induced kidney injury, the present work aims to evaluate the protective effects of ginsenoside Rb3 (G‐Rb3) on cisplatin‐induced renal damage and underlying mechanisms in vivo and in vitro. Materials and methods The protective effect of G‐Rb3 on cisplatin‐induced acute renal failure in ICR mouse model and HEK293 cell model was investigated, and the underlying possible mechanisms were also explored. For animal experiment, renal function, kidney histology, inflammation, oxidative stress, relative protein molecules involved in apoptosis and autophagy signalling pathways were assessed. In addition, rapamycin (a specific inhibitor of mTOR), compound C (a specific inhibitor of AMPK) and acetylcysteine (NAC, a specific ROS scavenger) were employed to testify the effects of AMPK/mTOR signal pathway on the protective effects of G‐Rb3 in HEK293 cells. Results Pre‐treatment with G‐Rb3 at doses of 10 and 20 mg/kg for ten days significantly reversed the increases in serum creatinine (CRE), blood urea nitrogen (BUN) and malondialdehyde (MDA), and decrease in glutathione (GSH) content and superoxide dismutase (SOD) activity. Histopathological examination further revealed that G‐Rb3 inhibited cisplatin‐induced nephrotoxicity. G‐Rb3 diminished cisplatin‐induced increase in protein expression levels of p62, Atg3, Atg5 and Atg7, and decrease in protein expression level of p‐mTOR and the ratio of LC3‐I/LC3‐II, indicating that G‐Rb3 suppressed cisplatin‐induced activation of autophagy. Inhibition of autophagy induced inactivation of apoptosis, which suggested that autophagy played an adverse effect on cisplatin‐evoked renal damage. Further, we found that G‐Rb3 might potentially modulate the expressions of AMPK‐related signal pathways. Conclusions These findings clearly suggested that G‐Rb3‐mediated alleviation of cisplatin‐induced nephrotoxicity was in part due to regulation of AMPK‐/mTOR‐mediated autophagy and inhibition of apoptosis in vitro and in vivo.
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Affiliation(s)
- Jing-Jing Xing
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
| | - Jin-Gang Hou
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,Intelligent Synthetic Biology Center, Daejeon, Korea
| | - Zhi-Na Ma
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Zi Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
| | - Shen Ren
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
| | - Ying-Ping Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
| | - Wen-Cong Liu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
| | - Chen Chen
- School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Wei Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China.,National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun, China
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Liu X, Zhao P, Wang X, Wang L, Zhu Y, Gao W. Triptolide Induces Glioma Cell Autophagy and Apoptosis via Upregulating the ROS/JNK and Downregulating the Akt/mTOR Signaling Pathways. Front Oncol 2019; 9:387. [PMID: 31157167 PMCID: PMC6528693 DOI: 10.3389/fonc.2019.00387] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 04/25/2019] [Indexed: 01/17/2023] Open
Abstract
Apoptosis and autophagy are the two prominent forms of developmental cell death, and researches have shown that crosstalk exists between these two processes. A prior study demonstrated that triptolide inhibited the proliferation of malignant glioma cells. However, whether apoptosis and autophagy participate in the inhibitory effect of triptolide in glioma cells has not been clarified. In the present study, we demonstrated that triptolide potently inhibited the growth of glioma cells by inducing cell cycle arrest at the G2/M phase. Additionally, the treatment with triptolide induced apoptosis and autophagy in various glioma cell lines. Triptolide-induced autophagy may have tumor-supporting effects. Autophagy and apoptosis could cross-inhibit each other in glioma cells treated with triptolide. Moreover, we found that triptolide induced ROS production and JNK activation and inhibited the activity of Akt and mTOR. Finally, we demonstrated that triptolide suppressed tumor growth in an orthotopic xenograft glioma model. Collectively, these data indicated that triptolide induced G2/M phase arrest, apoptosis, and autophagy via activating the ROS/JNK and blocking the Akt/mTOR signaling pathways in glioma cells. Triptolide may be a potential anti-tumor drug targeting gliomas.
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Affiliation(s)
- Xihong Liu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Peiyuan Zhao
- Basic Discipline of Integrated Chinese and Western Medicine, Henan University of Chinese Medicine, Henan, China
| | - Xiujuan Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Lei Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yingjun Zhu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Wei Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,School of Pharmaceutical Sciences, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
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48
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Zhai N, Liu K, Li H, Liu Z, Wang H, Korolchuk VI, Carroll B, Pan C, Gan F, Huang K, Chen X. PCV2 replication promoted by oxidative stress is dependent on the regulation of autophagy on apoptosis. Vet Res 2019; 50:19. [PMID: 30836990 PMCID: PMC6399867 DOI: 10.1186/s13567-019-0637-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 02/14/2019] [Indexed: 12/19/2022] Open
Abstract
Porcine circovirus type 2 (PCV2) is an economically important swine pathogen but some extra trigger factors are required for the development of PCV2-associated diseases. By evaluating cap protein expression, viral DNA copies and the number of infected cells, the present study further confirmed that oxidative stress can promote PCV2 replication. The results showed that oxidative stress induced autophagy in PCV2-infected PK15 cells. Blocking autophagy with inhibitor 3-methyladenine or ATG5-specific siRNA significantly inhibited oxidative stress-promoted PCV2 replication. Importantly, autophagy inhibition significantly increased apoptosis in oxidative stress-treated PK15 cells. Suppression of apoptosis by benzyloxycarbonyl-Val-Ala-Asp fluoromethylketone in conditions of autophagy inhibition restored PCV2 replication. Taken together, autophagy protected host cells against potential apoptosis and then contributed to PCV2 replication promotion caused by oxidative stress. Our findings can partly explain the pathogenic mechanism of PCV2 related to the oxidative stress-induced autophagy.
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Affiliation(s)
- Nianhui Zhai
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hu Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zixuan Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Viktor I Korolchuk
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
| | - Bernadette Carroll
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, NE4 5PL, UK.,School of Biochemistry, University of Bristol, Bristol, BS8 1TS, UK
| | - Cuiling Pan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fang Gan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kehe Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xingxiang Chen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
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49
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Hu A, Li X, He J, Gong X, Wu Z, Ning P. Classical swine fever virus-Shimen infection upregulates SH3GLB1 expression in porcine alveolar macrophages. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2018.1552839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Aoxue Hu
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Xuepeng Li
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Jun He
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Xiaocheng Gong
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Zhongxing Wu
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
| | - Pengbo Ning
- School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, PR China
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xi’an, Shaanxi, PR China
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50
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Xue Y, Liang Z, Fu X, Wang T, Xie Q, Ke D. IL-17A modulates osteoclast precursors' apoptosis through autophagy-TRAF3 signaling during osteoclastogenesis. Biochem Biophys Res Commun 2018; 508:1088-1092. [PMID: 30553450 DOI: 10.1016/j.bbrc.2018.12.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 12/05/2018] [Indexed: 12/13/2022]
Abstract
Osteoclasts play an important role in bone remodeling. The inflammatory cytokine IL-17A could modulate the RANKL-induced osteoclastogenesis by regulating the autophagic activity. It is well accepted that protective autophagy has an anti-apoptotic effect. It is necessary to elucidate whether IL-17A can influence the apoptosis of osteoclast precursors (OCPs) through autophagy responses during osteoclastogenesis. The results showed that apoptosis of RAW264.7-derived OCPs was promoted by high levels of IL-17A, but the opposite anti-apoptotic function was shown by low levels of IL-17A. Furthermore, the enhanced apoptosis by high levels of IL-17A was reversed by overexpression of autophagy protein Beclin1; conversely, the inhibited apoptosis by low levels of IL-17A was restored by knockdown of Beclin1. It was also found that Beclin1 suppression with Beclin1 inhibitor (spautin1) could block the reduced apoptosis by low levels of IL-17A, which was recovered by TRAF3 knockdown. Moreover, the enhanced apoptosis by high levels of IL-17A decreased following the downregulation of TRAF3. Importantly, overexpression of caspase3 further attenuated osteoclastogenesis treated by high levels of IL-17A, without significantly affecting osteoclastogenesis stimulated by low levels of IL-17A. In conclusion, IL-17A modulates apoptosis of OCPs through Beclin1-autophagy-TRAF3 signaling pathway, thereby influencing osteoclastogenesis. Therefore, our study sheds lights on the improvement of clinical strategies of dental implantation or orthodontic treatment by revealing the novel targets in the bone remodeling.
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Affiliation(s)
- Yan Xue
- Department of Stomatology, Hainan General Hospital, Haikou, 570000, China
| | - Zhengeng Liang
- Department of Stomatology, Hainan General Hospital, Haikou, 570000, China
| | - Xiaomin Fu
- Pediatrics Department, Division of Metabolism and Endocrinology, John Hopkins University, Baltimore, 21218, USA
| | - Tao Wang
- Department of Stomatology, Hainan General Hospital, Haikou, 570000, China
| | - Qi Xie
- Department of Stomatology, Hainan General Hospital, Haikou, 570000, China
| | - Dianshan Ke
- Academy of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, 510630, China.
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