miRNA regulation of Sdf1 chemokine signaling provides genetic robustness to germ cell migration.
miRNA regulation of Sdf1 chemokine signaling provides genetic robustness to germ cell migration.
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DOI:
10.1038/ng.758
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发表时间:
2011-03
期刊:
影响因子:
30.8
通讯作者:
Giraldez, Antonio J.
中科院分区:
文献类型:
--
作者:
Staton, Alison A.;Knaut, Holger;Giraldez, Antonio J.
microRNAs function as genetic rheostats to control gene output. Based on their role as modulators, it has been postulated that microRNAs canalize development and provide genetic robustness. Here, we uncover a novel regulatory layer of chemokine signaling by microRNAs that confers genetic robustness on primordial-germ-cell (PGC) migration. In zebrafish, PGCs are guided to the gonad by the ligand Sdf1a, which is regulated by sequestration receptor Cxcr7b. We find that miR-430 regulates sdf1a- and cxcr7-mRNAs. Using Target Protectors, we demonstrate that miR-430-mediated regulation of endogenous sdf1a and cxcr7b (i) facilitates dynamic expression of sdf1a by clearing its mRNA from previous expression domains, (ii) modulates the levels of the decoy receptor Cxcr7b to avoid excessive depletion of Sdf1a and (iii) buffers against variation in gene dosage of chemokine signaling components to ensure accurate PGC migration. Our results indicate that losing microRNA-mediated regulation can expose otherwise buffered genetic lesions leading to developmental defects.
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影响因子:
56.9
作者:
Giraldez, AJ;Mishima, Y;Schier, AF
通讯作者:
Schier, AF
DOI:
10.1073/pnas.252339399
发表时间:
2002-12-10
影响因子:
11.1
作者:
David, NB;Sapède, D;Ghysen, A
通讯作者:
Ghysen, A
影响因子:
64.5
作者:
Doitsidou, M;Reichman-Fried, M;Raz, E
通讯作者:
Raz, E
DOI:
10.1084/jem.185.1.111
发表时间:
1997-01-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Aiuti A;Webb IJ;Bleul C;Springer T;Gutierrez-Ramos JC
通讯作者:
Gutierrez-Ramos JC
影响因子:
64.8
作者:
Müller, A;Homey, B;Zlotnik, A
通讯作者:
Zlotnik, A