Negative feedback on Retinoic Acid by Brachyury guides gastruloid symmetry-breaking
Negative feedback on Retinoic Acid by Brachyury guides gastruloid symmetry-breaking
复制标题
Brachyury 对视黄酸的负反馈引导原肠胚对称性破坏
DOI:
10.1101/2023.06.02.543388
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Hennessy M
中科院分区:
文献类型:
--
作者:
Hennessy M
Establishment of the vertebrate body plan requires a combination of extra-embryonic signalling to establish morphogen gradients, and an underlying self-assembly mechanism that contributes to pattern regulation and robustness. Gastruloids are aggregates of mouse embryonic stem cells that break morphological symmetry and polariseBrachyury(Bra) expression in the absence of extra-embryonic signals. However, the mechanism by which symmetry breaking occurs is not yet known. During gastrulation and body axis elongation, retinoic acid (RA) andCyp26a1are polarised along the anteroposterior axis, and this is critical for balancing the decision of cells to self-renew or differentiate. We found that symmetry-breaking in gastruloids is coincident with the separation ofAldh1a2andCyp26a1expression, and that feedback fromBrais critical for maintaining polarisedCyp26a1gene expression in the gastruloid posterior region. Furthermore, we reveal a short temporal window where RA signalling can negatively influence bothBraandCyp26a1expression. These observations lead us to suggest a mechanism of how initial gastruloid patterning, subsequent elongation, and evolving network topologies can create defined boundaries of RA signalling that permits proper axial patterning and gastruloid growth.
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DOI:
10.1101/2021.03.30.437698
发表时间:
2021
期刊:
--
影响因子:
--
作者:
Mantziou V
通讯作者:
Mantziou V
DOI:
--
发表时间:
2022
期刊:
bioRxiv
影响因子:
--
作者:
Alexandra E. Wehmeyer;Katrin M. Schüle;Alexandra Conrad;Chiara M. Schröder;S. Probst;S. Arnold
通讯作者:
S. Arnold
影响因子:
2.7
作者:
Arias, Alfonso Martinez;Marikawa, Yusuke;Moris, Naomi
通讯作者:
Moris, Naomi
影响因子:
4.4
作者:
Busby L;Steventon B
通讯作者:
Steventon B
影响因子:
4.6
作者:
K. Hashimoto;H. Fujimoto;N. Nakatsuji
通讯作者:
N. Nakatsuji