MICAL2PV suppresses the formation of tunneling nanotubes and modulates mitochondrial trafficking.
MICAL2PV suppresses the formation of tunneling nanotubes and modulates mitochondrial trafficking.
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MICAL2PV抑制隧道纳米管的形成并调节线粒体运输。
DOI:
10.15252/embr.202052006
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发表时间:
2021-07-05
期刊:
影响因子:
7.7
通讯作者:
Wu JY
中科院分区:
文献类型:
--
作者:
Wang F;Chen X;Cheng H;Song L;Liu J;Caplan S;Zhu L;Wu JY
Tunneling nanotubes (TNTs) are actin‐rich structures that connect two or more cells and mediate cargo exchange between spatially separated cells. TNTs transport signaling molecules, vesicles, organelles, and even pathogens. However, the molecular mechanisms regulating TNT formation remain unclear and little is known about the endogenous mechanisms suppressing TNT formation in lung cancer cells. Here, we report that MICAL2PV, a splicing isoform of the neuronal guidance gene MICAL2, is a novel TNT regulator that suppresses TNT formation and modulates mitochondrial distribution. MICAL2PV interacts with mitochondrial Rho GTPase Miro2 and regulates subcellular mitochondrial trafficking. Moreover, down‐regulation of MICAL2PV enhances survival of cells treated with chemotherapeutical drugs. The monooxygenase (MO) domain of MICAL2PV is required for its activity to inhibit TNT formation by depolymerizing F‐actin. Our data demonstrate a previously unrecognized function of MICAL2 in TNT formation and mitochondrial trafficking. Furthermore, our study uncovers a role of the MICAL2PV‐Miro2 axis in mitochondrial trafficking, providing a mechanistic explanation for MICAL2PV activity in suppressing TNT formation and in modulating mitochondrial subcellular distribution. MICAL2PV suppress TNT formation and TNT‐mediated mitochondrial transfer in lung cancer cells. Down‐regulation of MICAL2PV promotes F‐actin polymerization, thereby increasing TNT formation and intercellular mitochondrial movement and distribution.
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影响因子:
20.3
作者:
Burt, Richard;Dey, Aditi;Fielding, Adele K.
通讯作者:
Fielding, Adele K.
影响因子:
--
作者:
Abounit, Saida;Delage, Elise;Zurzolo, Chiara
通讯作者:
Zurzolo, Chiara
影响因子:
44.1
作者:
通讯作者:
--
DOI:
10.1016/j.cub.2018.01.025
发表时间:
2018-05-07
期刊:
Current biology : CB
影响因子:
--
作者:
Alto LT;Terman JR
通讯作者:
Terman JR
DOI:
10.1073/pnas.1500722112
发表时间:
2015-07-14
影响因子:
11.1
作者:
Caino, M. Cecilia;Ghosh, Jagadish C.;Altieri, Dario C.
通讯作者:
Altieri, Dario C.