Dual roles of Incenp crucial to the assembly of the acentrosomal metaphase spindle in female meiosis.
Dual roles of Incenp crucial to the assembly of the acentrosomal metaphase spindle in female meiosis.
复制标题
incenp对女性减数分裂中腺体中层轴心轴的组装至关重要的双重作用至关重要。
DOI:
10.1242/dev.022624
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发表时间:
2008-10
期刊:
影响因子:
4.6
通讯作者:
Ohkura, Hiroyuki
中科院分区:
文献类型:
--
作者:
Colombie, Nathalie;Cullen, C. Fiona;Brittle, Amy L.;Jang, Janet K.;Earnshaw, William C.;Carmena, Mar;Mckim, Kim;Ohkura, Hiroyuki
Spindle formation in female meiosis differs from mitosis in many animals, as it takes place independently from centrosomes, and the molecular requirements of this pathway remain to be understood. Here we report two crucial roles of Incenp, an essential subunit of the chromosomal passenger complex (the Aurora B complex), in centrosome-independent spindle formation in Drosophila female meiosis. Firstly, the initial assembly of spindle microtubules is drastically delayed in an incenp mutant. This clearly demonstrates, for the first time, a crucial role for Incenp in chromosome-driven spindle microtubule assembly in living oocytes. Additionally, Incenp is necessary to stabilise the equatorial region of the metaphase I spindle, in contrast to mitosis, where the equivalent function becomes prominent after anaphase onset. Our analysis suggests that Subito, a kinesin-6 protein, cooperates with Incenp for this latter function, but not microtubule assembly. We propose that the two functions of Incenp are part of the mechanisms that compensate for the lack of centrosomes during meiotic spindle formation.
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DOI:
10.1083/jcb.153.4.865
发表时间:
2001-05-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Adams RR;Maiato H;Earnshaw WC;Carmena M
通讯作者:
Carmena M
影响因子:
64.8
作者:
Heald, R;Tournebize, R;Karsenti, E
通讯作者:
Karsenti, E
影响因子:
3.3
作者:
Jang, JK;Rahman, T;McKim, KS
通讯作者:
McKim, KS
影响因子:
64.8
作者:
Carazo-Salas, RE;Guarguaglini, G;Mattaj, IW
通讯作者:
Mattaj, IW
影响因子:
21.3
作者:
Cullen, CF;Ohkura, H
通讯作者:
Ohkura, H