Myosin II has distinct functions in PNS and CNS myelin sheath formation.
Myosin II has distinct functions in PNS and CNS myelin sheath formation.
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肌球蛋白II在PNS和CNS髓鞘形成中具有不同的功能。
DOI:
10.1083/jcb.200802091
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发表时间:
2008-09-22
影响因子:
7.8
通讯作者:
Melendez-Vasquez, Carmen V.
中科院分区:
文献类型:
--
作者:
Wang, Haibo;Tewari, Ambika;Einheber, Steven;Salzer, James L.;Melendez-Vasquez, Carmen V.
The myelin sheath forms by the spiral wrapping of a glial membrane around the axon. The mechanisms responsible for this process are unknown but are likely to involve coordinated changes in the glial cell cytoskeleton. We have found that inhibition of myosin II, a key regulator of actin cytoskeleton dynamics, has remarkably opposite effects on myelin formation by Schwann cells (SC) and oligodendrocytes (OL). Myosin II is necessary for initial interactions between SC and axons, and its inhibition or down-regulation impairs their ability to segregate axons and elongate along them, preventing the formation of a 1:1 relationship, which is critical for peripheral nervous system myelination. In contrast, OL branching, differentiation, and myelin formation are potentiated by inhibition of myosin II. Thus, by controlling the spatial and localized activation of actin polymerization, myosin II regulates SC polarization and OL branching, and by extension their ability to form myelin. Our data indicate that the mechanisms regulating myelination in the peripheral and central nervous systems are distinct.
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DOI:
10.1097/nen.0b013e318093e555
发表时间:
2007-07-01
影响因子:
3.2
作者:
Flaiz, Christine;Kaempchen, Katherine;Hanemann, Clemens Oliver
通讯作者:
Hanemann, Clemens Oliver
影响因子:
5.6
作者:
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Bernheim-Groswasser, Anne
影响因子:
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作者:
Kippert, Angelika;Trajkovic, Katarina;Simons, Mikael
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DOI:
10.1002/neu.20258
发表时间:
2006-07-01
期刊:
JOURNAL OF NEUROBIOLOGY
影响因子:
--
作者:
Loudon, Robert R.;Silver, Lee D.;Gallo, Gianluca
通讯作者:
Gallo, Gianluca
DOI:
10.1083/jcb.109.1.273
发表时间:
1989-07
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bunge RP;Bunge MB;Bates M
通讯作者:
Bates M