Murine leukemia virus spreading in mice impaired in the biogenesis of secretory lysosomes and Ca2+-regulated exocytosis.
Murine leukemia virus spreading in mice impaired in the biogenesis of secretory lysosomes and Ca2+-regulated exocytosis.
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DOI：
10.1371/journal.pone.0002713
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发表时间：
2008-07-16
期刊：
影响因子：
3.7
通讯作者：
Mothes W
中科院分区：
文献类型：
--
作者：
Chan WT;Sherer NM;Uchil PD;Novak EK;Swank RT;Mothes W
Retroviruses have been observed to bud intracellularly into multivesicular bodies (MVB), in addition to the plasma membrane. Release from MVB is thought to occur by Ca2+-regulated fusion with the plasma membrane. To address the role of the MVB pathway in replication of the murine leukemia virus (MLV) we took advantage of mouse models for the Hermansky-Pudlak syndrome (HPS) and Griscelli syndrome. In humans, these disorders are characterized by hypopigmentation and immunological alterations that are caused by defects in the biogenesis and trafficking of MVBs and other lysosome related organelles. Neonatal mice for these disease models lacking functional AP-3, Rab27A and BLOC factors were infected with Moloney MLV and the spread of virus into bone marrow, spleen and thymus was monitored. We found a moderate reduction in MLV infection levels in most mutant mice, which differed by less than two-fold compared to wild-type mice. In vitro, MLV release form bone-marrow derived macrophages was slightly enhanced. Finally, we found no evidence for a Ca2+-regulated release pathway in vitro. Furthermore, MLV replication was only moderately affected in mice lacking Synaptotagmin VII, a Ca2+-sensor regulating lysosome fusion with the plasma membrane. Given that MLV spreading in mice depends on multiple rounds of replication even moderate reduction of virus release at the cellular level would accumulate and lead to a significant effect over time. Thus our in vivo and in vitro data collectively argue against an essential role for a MVB- and secretory lysosome-mediated pathway in the egress of MLV.
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影响因子：
4.5
作者：
Garcia, E;Pion, M;Piguet, V
通讯作者：
Piguet, V
DOI：
10.1083/jcb.200510010
发表时间：
2006-06-19
期刊：
The Journal of cell biology
影响因子：
--
作者：
Aivazian D;Serrano RL;Pfeffer S
通讯作者：
Pfeffer S
影响因子：
9.8
作者：
Jaiswal JK;Chakrabarti S;Andrews NW;Simon SM
通讯作者：
Simon SM
DOI：
10.1083/jcb.200609050
发表时间：
2007-04-23
期刊：
The Journal of cell biology
影响因子：
--
作者：
Deneka M;Pelchen-Matthews A;Byland R;Ruiz-Mateos E;Marsh M
通讯作者：
Marsh M
影响因子：
4.5
作者：
Bossi, G;Booth, S;Griffiths, GM
通讯作者：
Griffiths, GM