Distinct phospho-variants of STAT3 regulate naïve pluripotency and developmental pace in vivo

Distinct phospho-variants of STAT3 regulate naïve pluripotency and developmental pace in vivo
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STAT3 的独特磷酸化变体调节体内幼稚多能性和发育速度

DOI:
10.1101/2022.03.08.483469
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发表时间:
2022
期刊:
--
影响因子:
--
通讯作者:
Azami T
Azami T
中科院分区:
--
文献类型:
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作者:
Azami T

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在幼稚多能小鼠胚胎干细胞自我更新的背景下,STAT3已被广泛研究。我们揭示了STAT3及其靶标Tfcp2L1在活体滞育期间维持上胚层和原始内胚层中的急性作用。在远缘杂交的遗传背景下,我们观察到从着床到胚胎11.5天的持续发育迟缓,开始于Stat3空胚胎着床时外胚层细胞的显著减少。值得注意的是,在所研究的所有种植后阶段,突变体与前一天的未受影响的胚胎非常相似。我们将这种表型归因于活性丝氨酸磷酸化形式的STAT3的缺失,这是神经分化所必需的,并与小鼠和人类的生长缺陷有关。对分离的上皮细胞进行的批量RNA测序分析显示,到胚胎第6.5天时,Stat3基因缺失的胚胎的脂肪代谢受到了损害。此外,我们证明了由Stat3缺失的ESCs产生的原肠细胞不能延长后轴或保持短促表达,并且当与嵌合的原肠细胞中的野生型细胞混合时,该区域的原肠蛋白表达不足。我们的研究暗示了STAT3在胚胎发育和代谢机制的时间控制中的作用。
STAT3 has been studied extensively in the context of self-renewal of naïve pluripotent mouse embryonic stem cells. We uncovered acute roles for STAT3 and its target, TFCP2L1, in maintenance of epiblast and primitive endoderm duringin vivodiapause. On an outbred genetic background, we observed consistent developmental retardation from implantation until embryonic day 11.5, beginning with significant reduction of epiblast cells at implantation inStat3null embryos. Remarkably, mutants closely resemble non-affected embryos from the previous day at all postimplantation stages examined. We attribute this phenotype to loss of the active serine phosphorylated form of STAT3 required for neural differentiation and implicated in growth defects in mice and humans. Bulk RNA-sequencing analysis of isolated epiblasts revealed compromised lipid metabolism inStat3null embryos by embryonic day 6.5. Furthermore, we demonstrate that gastruloids generated fromStat3null ESCs failed to extend the posterior axis or maintain BRACHYURY expression and were underrepresented in this region when mixed with wild type cells in chimaeric gastruloids. Our study implicates a role for STAT3 in temporal control of embryonic progression and metabolic mechanisms.
卷曲线圈域
DOI: --
发表时间: 2020
期刊: Definitions
影响因子: --
作者:
M. Rasmussen
通讯作者: M. Rasmussen
DOI: 10.1073/pnas.78.12.7634
发表时间: 1981-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
MARTIN, GR
通讯作者: MARTIN, GR
卵巢切除小鼠子宫中囊胚的存活率。
DOI: 10.1530/jrf.0.0170515
发表时间: 1968
期刊: Journal of reproduction and fertility
影响因子: --
作者:
H. Weitlauf;G. Greenwald
通讯作者: G. Greenwald