Gene editing can generate fragile bivalents in mouse oocytes
Gene editing can generate fragile bivalents in mouse oocytes
复制标题
基因编辑可以在小鼠卵母细胞中产生脆弱的二价体
DOI:
10.1101/350272
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Manil-Ségalen M
中科院分区:
文献类型:
--
作者:
Manil-Ségalen M
Mouse female meiotic spindles assemble from acentriolar MTOCs (aMTOCs) that fragment into discrete foci. These are further sorted and clustered to form spindle poles, thus providing balanced forces for faithful chromosome segregation. To assess the impact of aMTOCs biogenesis on spindle assembly, we genetically induced their precocious fragmentation in mouse oocytes using conditional overexpression of Plk4, a master MTOC regulator. Excessive microtubule nucleation from these fragmented aMTOCs accelerated spindle assembly dynamics. Prematurely formed spindles promoted the breakage of three different fragilized bivalents, generated by the presence of recombined Lox P sites. Reducing the density of microtubules diminished the extent of chromosome breakage. Thus, improper spindle forces can lead to widely described yet unexplained chromosomal structural anomalies with disruptive consequences on the ability of the gamete to transmit an uncorrupted genome.
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影响因子:
56.9
作者:
Schermelleh, Lothar;Carlton, Peter M.;Sedat, John W.
通讯作者:
Sedat, John W.
影响因子:
64.8
作者:
Heald, R;Tournebize, R;Karsenti, E
通讯作者:
Karsenti, E
影响因子:
5.2
作者:
Wieczorek, D;Krause, M;Gillessen-Kaesbach, G
通讯作者:
Gillessen-Kaesbach, G
影响因子:
19
作者:
Dumont J;Desai A
通讯作者:
Desai A
DOI:
--
发表时间:
2017
期刊:
bioRxiv
影响因子:
--
作者:
C. Sinigaglia;D. Thiel;A. Hejnol;E. Houliston;L. Leclère
通讯作者:
L. Leclère