HIV-1 enhances mTORC1 activity and repositions lysosomes to the periphery by co-opting Rag GTPases.
HIV-1 enhances mTORC1 activity and repositions lysosomes to the periphery by co-opting Rag GTPases.
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DOI:
10.1038/s41598-017-05410-0
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发表时间:
2017-07-14
影响因子:
4.6
通讯作者:
Mouland AJ
中科院分区:
文献类型:
--
作者:
Cinti A;Le Sage V;Milev MP;Valiente-Echeverría F;Crossie C;Miron MJ;Panté N;Olivier M;Mouland AJ
HIV-1 co-opts several host machinery to generate a permissive environment for viral replication and transmission. In this work we reveal how HIV-1 impacts the host translation and intracellular vesicular trafficking machineries for protein synthesis and to impede the physiological late endosome/lysosome (LEL) trafficking in stressful conditions. First, HIV-1 enhances the activity of the master regulator of protein synthesis, the mammalian target of rapamycin (mTOR). Second, the virus commandeers mTOR-associated late endosome/lysosome (LEL) trafficking and counteracts metabolic and environmental stress-induced intracellular repositioning of LEL. We then show that the small Rag GTPases, RagA and RagB, are required for the HIV-1-mediated LEL repositioning that is likely mediated by interactions between the Rags and the viral proteins, Gag and Vif. siRNA-mediated depletion of RagA and RagB leads to a loss in mTOR association to LEL and to a blockade of viral particle assembly and release at the plasma membrane with a marked concomitant reduction in virus production. These results show that HIV-1 co-opts fundamental mechanisms that regulate LEL motility and positioning and support the notion that LEL positioning is critical for HIV-1 replication.
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DOI:
10.4049/jimmunol.1101532
发表时间:
2011-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Li X;Han X;Llano J;Bole M;Zhou X;Swan K;Anandaiah A;Nelson B;Patel NR;Reinach PS;Koziel H;Tachado SD
通讯作者:
Tachado SD
影响因子:
4.8
作者:
Coleman EM;Walker TN;Hildreth JE
通讯作者:
Hildreth JE
影响因子:
30.3
作者:
Jaramillo, Maritza;Gomez, Maria Adelaide;Sonenberg, Nahum
通讯作者:
Sonenberg, Nahum
影响因子:
5.4
作者:
Karczewski, MK;Strebel, K
通讯作者:
Strebel, K
DOI:
10.1073/pnas.1511144112
发表时间:
2015-07-28
影响因子:
11.1
作者:
Heredia, Alonso;Le, Nhut;Redfield, Robert R.
通讯作者:
Redfield, Robert R.