{"title":"登革病毒复制通过调节ZIP8增强不稳定锌池","authors":"Aleksha Panwar, Jigme Wangchuk, Meenakshi Kar, Rakesh Lodha, Guruprasad R. Medigeshi","doi":"10.1111/cmi.13395","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <p>Zinc-dependent viral proteins rely on intracellular zinc homeostasis for successful completion of infectious life-cycle. Here, we report that the intracellular labile zinc levels were elevated at early stages of dengue virus (DENV) infection in hepatic cells and this increase in free zinc was abolished in cells infected with UV-inactivated virus or with a DENV replication inhibitor implicating a role for zinc homeostasis in viral RNA replication. This change in free zinc was mediated by zinc transporter, ZIP8, as siRNA-mediated knockdown of ZIP8 resulted in abrogation of increase in free zinc levels leading to significant reduction in DENV titers suggesting a crucial role for ZIP8 in early stages of DENV replication. Furthermore, elevated free zinc levels correlated with high copy numbers of dengue genome in peripheral blood leukocytes obtained from dengue patients compared to healthy controls suggesting a critical role for zinc homeostasis in dengue infection.</p>\n </section>\n \n <section>\n \n <h3> Take Aways</h3>\n \n <div>\n <ul>\n \n <li>Dengue virus utilises cellular zinc homeostasis during replication of its RNA.</li>\n \n <li>ZIP8 upregulates free zinc levels during dengue virus replication.</li>\n \n <li>Enhanced viremia associates with elevated intracellular free zinc in dengue.</li>\n </ul>\n </div>\n </section>\n </div>","PeriodicalId":9844,"journal":{"name":"Cellular Microbiology","volume":"23 12","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7612096/pdf/","citationCount":"1","resultStr":"{\"title\":\"Dengue virus replication enhances labile zinc pools by modulation of ZIP8\",\"authors\":\"Aleksha Panwar, Jigme Wangchuk, Meenakshi Kar, Rakesh Lodha, Guruprasad R. Medigeshi\",\"doi\":\"10.1111/cmi.13395\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <p>Zinc-dependent viral proteins rely on intracellular zinc homeostasis for successful completion of infectious life-cycle. Here, we report that the intracellular labile zinc levels were elevated at early stages of dengue virus (DENV) infection in hepatic cells and this increase in free zinc was abolished in cells infected with UV-inactivated virus or with a DENV replication inhibitor implicating a role for zinc homeostasis in viral RNA replication. This change in free zinc was mediated by zinc transporter, ZIP8, as siRNA-mediated knockdown of ZIP8 resulted in abrogation of increase in free zinc levels leading to significant reduction in DENV titers suggesting a crucial role for ZIP8 in early stages of DENV replication. Furthermore, elevated free zinc levels correlated with high copy numbers of dengue genome in peripheral blood leukocytes obtained from dengue patients compared to healthy controls suggesting a critical role for zinc homeostasis in dengue infection.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Take Aways</h3>\\n \\n <div>\\n <ul>\\n \\n <li>Dengue virus utilises cellular zinc homeostasis during replication of its RNA.</li>\\n \\n <li>ZIP8 upregulates free zinc levels during dengue virus replication.</li>\\n \\n <li>Enhanced viremia associates with elevated intracellular free zinc in dengue.</li>\\n </ul>\\n </div>\\n </section>\\n </div>\",\"PeriodicalId\":9844,\"journal\":{\"name\":\"Cellular Microbiology\",\"volume\":\"23 12\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2021-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7612096/pdf/\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellular Microbiology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/cmi.13395\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CELL BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellular Microbiology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/cmi.13395","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
Dengue virus replication enhances labile zinc pools by modulation of ZIP8
Zinc-dependent viral proteins rely on intracellular zinc homeostasis for successful completion of infectious life-cycle. Here, we report that the intracellular labile zinc levels were elevated at early stages of dengue virus (DENV) infection in hepatic cells and this increase in free zinc was abolished in cells infected with UV-inactivated virus or with a DENV replication inhibitor implicating a role for zinc homeostasis in viral RNA replication. This change in free zinc was mediated by zinc transporter, ZIP8, as siRNA-mediated knockdown of ZIP8 resulted in abrogation of increase in free zinc levels leading to significant reduction in DENV titers suggesting a crucial role for ZIP8 in early stages of DENV replication. Furthermore, elevated free zinc levels correlated with high copy numbers of dengue genome in peripheral blood leukocytes obtained from dengue patients compared to healthy controls suggesting a critical role for zinc homeostasis in dengue infection.
Take Aways
Dengue virus utilises cellular zinc homeostasis during replication of its RNA.
ZIP8 upregulates free zinc levels during dengue virus replication.
Enhanced viremia associates with elevated intracellular free zinc in dengue.
期刊介绍：
Cellular Microbiology aims to publish outstanding contributions to the understanding of interactions between microbes, prokaryotes and eukaryotes, and their host in the context of pathogenic or mutualistic relationships, including co-infections and microbiota. We welcome studies on single cells, animals and plants, and encourage the use of model hosts and organoid cultures. Submission on cell and molecular biological aspects of microbes, such as their intracellular organization or the establishment and maintenance of their architecture in relation to virulence and pathogenicity are also encouraged. Contributions must provide mechanistic insights supported by quantitative data obtained through imaging, cellular, biochemical, structural or genetic approaches.
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