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• W3214331820 abstract "Rabies is an old zoonotic disease caused by rabies virus (RABV), but the pathogenic mechanism of RABV is still not completely understood. Lipid droplets (LDs) have been reported to play a role in pathogenesis of several viruses. However, their role in RABV infection remains unclear. Here, we initially found that RABV infection upregulated LD production in multiple cells and mouse brains. After treatment with atorvastatin, a specific inhibitor of LDs, RABV replication in N2a cells decreased. Then we found that RABV infection could upregulate N-myc downstream regulated gene-1 (NDRG1), which in turn enhanced the expression of diacylglycerol acyltransferase 1/2 (DGAT1/2). DGAT1/2 could elevate cellular triglyceride synthesis and ultimately promote intracellular LD formation. Furthermore, we found that RABV-M and RABV-G, which were mainly involved in the viral budding process, could colocalize with LDs, indicating that RABV might utilize LDs as a carrier to facilitate viral budding and eventually increase virus production. Taken together, our study reveals that lipid droplets are beneficial for RABV replication, and their biogenesis is regulated via the NDRG1-DGAT1/2 pathway, which provides novel potential targets for developing anti-RABV drugs. IMPORTANCE Lipid droplets have been proven to play an important role in viral infections, but their role in RABV infection has not yet been elaborated. Here, we find that RABV infection upregulates the generation of LDs by enhancing the expression of N-myc downstream regulated gene-1 (NDRG1). Then NDRG1 elevated cellular triglycerides synthesis by increasing the activity of diacylglycerol acyltransferase 1/2 (DGAT1/2), which promotes the biogenesis of LDs. RABV-M and RABV-G, which are the major proteins involved in viral budding, could utilize LDs as a carrier for transport to cell membrane, resulting in enhanced virus budding. Our findings will extend the knowledge of lipid metabolism in RABV infection and help to explore potential therapeutic targets for RABV." @default.
• W3214331820 created "2021-11-22" @default.
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• W3214331820 date "2022-01-26" @default.
• W3214331820 modified "2023-09-28" @default.
• W3214331820 title "Lipid Droplets Are Beneficial for Rabies Virus Replication by Facilitating Viral Budding" @default.
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• W3214331820 doi "https://doi.org/10.1128/jvi.01473-21" @default.
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• W3214331820 hasPublicationYear "2022" @default.
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