OTX2 restricts entry to the mouse germline.

OTX2 restricts entry to the mouse germline.
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OTX2限制了进入鼠标种系的输入。

DOI:
10.1038/s41586-018-0581-5
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发表时间:
2018-10
期刊:
影响因子:
64.8
通讯作者:
Chambers I
Chambers I
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhang J;Zhang M;Acampora D;Vojtek M;Yuan D;Simeone A;Chambers I

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生殖细胞与体细胞谱系的成功分离对有性繁殖和物种生存至关重要。在小鼠中,所有生殖细胞的前体原始生殖细胞(PGCs)都是从植入后的上胚层诱导而来的。诱导需要BMP4信号到未来的PGC和PGC转录因子(TF)的内在作用。然而,BMP4与PGC转录因子的诱导有关的分子机制尚不清楚,PGC转录因子负责将PGCs从体细胞谱系中分离出来。在这里,我们证明了转录因子OTX2是这些过程的关键调节因子。在体外和体内,OTX2的下调先于PGC程序的启动。OTX2在体外的缺失显著提高了PGCLC的分化效率,延长了PGC的传代周期。在没有OTX2活性的情况下,PGCLC的分化变得不依赖于其他必要的细胞因子信号,即使在没有PGC Tf Blimp1的情况下,生殖系也会启动进入。体内OTX2的缺失增加了PGC的数量。这些数据表明,OTX2在PGC转录因子的上游发挥着重要的作用,作为一种障碍,将外胚细胞进入生殖系的时间和空间限制在一个小窗口内,从而确保生殖系细胞与胞体的正确数字分离。
The successful segregation of germ cells from somatic lineages is vital for sexual reproduction and species survival. In the mouse, primordial germ cells (PGCs), precursors of all germ cells, are induced from the post-implantation epiblast. Induction requires BMP4 signalling to prospective PGCs and the intrinsic action of PGC transcription factors (TFs). However, the molecular mechanisms connecting BMP4 to induction of the PGC TFs responsible for segregating PGCs from somatic lineages are unknown. Here we show that the transcription factor OTX2 is a key regulator of these processes. Down-regulation of Otx2 precedes the initiation of the PGC programme both in vitro and in vivo. Deletion of Otx2 in vitro dramatically increases PGCLC differentiation efficiency and prolongs the period of PGC competence. In the absence of Otx2 activity, PGCLC differentiation becomes independent of the otherwise essential cytokine signals, with germline entry initiating even in the absence of the PGC TF Blimp1. Deletion of Otx2 in vivo increases PGC numbers. These data demonstrate that OTX2 functions repressively upstream of PGC TFs, acting as a roadblock to limit entry of epiblast cells to the germline to a small window in space and time, thereby ensuring correct numerical segregation of germline cells from the soma.
DOI: 10.1242/dev.113993
发表时间: 2015-08-15
期刊: Development (Cambridge, England)
影响因子: --
作者:
Johnson AD;Alberio R
通讯作者: Alberio R
DOI: 10.1530/jrf.0.0220129
发表时间: 1970-01-01
期刊: JOURNAL OF REPRODUCTION AND FERTILITY
影响因子: --
作者:
BRONSON, RA;MCLAREN, A
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DOI: 10.1101/gad.13.4.424
发表时间: 1999-02-15
影响因子: 10.5
作者:
Lawson, KA;Dunn, NR;Hogan, BLM
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DOI: 10.1016/j.stemcr.2017.09.019
发表时间: 2017-11-14
期刊: Stem cell reports
影响因子: 5.9
作者:
Acampora D;Di Giovannantonio LG;Garofalo A;Nigro V;Omodei D;Lombardi A;Zhang J;Chambers I;Simeone A
通讯作者: Simeone A
DOI: 10.1016/j.devcel.2006.07.005
发表时间: 2006-09-01
期刊: DEVELOPMENTAL CELL
影响因子: 11.8
作者:
Ben-Haim, Nadav;Lu, Cindy;Constam, Daniel B.
通讯作者: Constam, Daniel B.