Dengue virus-induced autophagy regulates lipid metabolism.

Dengue virus-induced autophagy regulates lipid metabolism.
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DOI:
10.1016/j.chom.2010.10.006
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发表时间:
2010-11-18
影响因子:
30.3
通讯作者:
Randall G
Randall G
中科院分区:
医学1区
文献类型:
--
作者:
Heaton NS;Randall G

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Autophagy influences numerous cellular processes, including innate and adaptive immunity against intracellular pathogens. However, some viruses, including dengue virus (DENV), usurp autophagy to enhance their replication. The mechanism for a positive role of autophagy in DENV infection is unclear. We present data that DENV induction of autophagy regulates cellular lipid metabolism. DENV infection leads to an autophagy-dependent processing of lipid droplets and triglycerides to release free fatty acids. This results in an increase in cellular β-oxidation, which generates ATP. These processes are required for efficient DENV replication. Importantly, exogenous fatty acids can supplant the requirement of autophagy in DENV replication. These results define a role for autophagy in DENV infection and provide a mechanism by which viruses can alter cellular lipid metabolism to promote their replication.
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