Autophagy proteins regulate the secretory component of osteoclastic bone resorption.
Autophagy proteins regulate the secretory component of osteoclastic bone resorption.
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DOI:
10.1016/j.devcel.2011.08.016
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发表时间:
2011-11-15
影响因子:
11.8
通讯作者:
Virgin, Herbert W.
中科院分区:
文献类型:
--
作者:
DeSelm, Carl J.;Miller, Brian C.;Zou, Wei;Beatty, Wandy L.;van Meel, Helena;Takahata, Yoshifumi;Klumperman, Judith;Tooze, Sharon A.;Teitelbaum, Steven L.;Virgin, Herbert W.
Osteoclasts resorb bone via the ruffled border whose complex folds are generated by secretory lysosome fusion with bone-apposed plasma membrane. Lysosomal fusion with the plasmalemma results in acidification of the resorptive microenvironment and release of CatK to digest the organic matrix of bone. The means by which secretory lysosomes are directed to fuse with the ruffled border are enigmatic. We show that proteins essential for autophagy including Atg5, Atg7, Atg4B and LC3, are important for generating the osteoclast ruffled border, the secretory function of osteoclasts and bone resorption in vitro and in vivo. Further, Rab7 which is required for osteoclast function, localizes to the ruffled border in an Atg5-dependent manner. Thus, autophagy proteins participate in polarized secretion of lysosomal contents into the extracellular space by directing lysosomes to fuse with the plasma membrane. These findings are in keeping with a putative link between autophagy genes and human skeletal homeostasis.
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DOI:
10.1083/jcb.152.4.657
发表时间:
2001-02-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Mizushima N;Yamamoto A;Hatano M;Kobayashi Y;Kabeya Y;Suzuki K;Tokuhisa T;Ohsumi Y;Yoshimori T
通讯作者:
Yoshimori T
影响因子:
4
作者:
Jäger, S;Bucci, C;Eskelinen, EL
通讯作者:
Eskelinen, EL
影响因子:
--
作者:
Chamoux, Estelle;Couture, Julie;Roux, Sophie
通讯作者:
Roux, Sophie
影响因子:
15.9
作者:
Marino, Guillermo;Fernandez, Alvaro F.;Lopez-Otin, Carlos
通讯作者:
Lopez-Otin, Carlos
影响因子:
29
作者:
Ebato, Chie;Uchida, Toyoyoshi;Watada, Hirotaka
通讯作者:
Watada, Hirotaka