Early steps in primary cilium assembly require EHD1/EHD3-dependent ciliary vesicle formation.
Early steps in primary cilium assembly require EHD1/EHD3-dependent ciliary vesicle formation.
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DOI:
10.1038/ncb3109
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发表时间:
2015-03
影响因子:
21.3
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Membrane association with mother centriole (M-centriole) distal appendages is critical for ciliogenesis initiation. How the Rab GTPase Rab11-Rab8 cascade functions in early ciliary membrane assembly is unknown. Here, we show that the membrane shaping proteins EHD1 and EHD3, in association with the Rab11-Rab8 cascade, function in early ciliogenesis. EHD1 and EHD3 localize to pre-ciliary membranes and the ciliary pocket. EHD-dependent membrane tubulation is essential for ciliary vesicle (CV) formation from smaller distal appendage vesicles (DAV). Importantly, this step functions in M-centriole to basal body transformation and recruitment of transition zone proteins and IFT20. SNAP29, a SNARE membrane fusion regulator and EHD1-binding protein, is also required for DAV-mediated CV assembly. Interestingly, only after CV assembly is Rab8 activated for ciliary growth. Our studies uncover molecular mechanisms informing a previously uncharacterized ciliogenesis step whereby EHD1 and EHD3 reorganize the M-centriole and associated DAV prior to coordinated ciliary membrane and axoneme growth.
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影响因子:
64.8
作者:
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影响因子:
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作者:
George, Manju;Ying, GuoGuang;Rainey, Mark A.;Solomon, Aharon;Parikh, Pankit T.;Gao, Qingshen;Band, Vimla;Band, Hamid
通讯作者:
Band, Hamid
影响因子:
44.1
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通讯作者:
Zhang, Chuanmao
影响因子:
3.3
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Klinger, Maren;Wang, Wenbo;Gruss, Oliver J.
通讯作者:
Gruss, Oliver J.
影响因子:
4.8
作者:
Cai, Bishuang;Giridharan, Sai Srinivas Panapakkam;Caplan, Steve
通讯作者:
Caplan, Steve