A microRNA switch regulates the rise in hypothalamic GnRH production before puberty - PubMed (original) (raw)
doi: 10.1038/nn.4298. Epub 2016 May 2.
Fanny Langlet 1 2 3, Konstantina Chachlaki 1 2, Juan Roa 4 5 6, Sowmyalakshmi Rasika 7, Nathalie Jouy 1 2, Sarah Gallet 1 2, Francisco Gaytan 4 5 6, Jyoti Parkash 1 2, Manuel Tena-Sempere 4 5 6, Paolo Giacobini 1 2, Vincent Prevot 1 2
Affiliations
- PMID: 27135215
- DOI: 10.1038/nn.4298
Free article
A microRNA switch regulates the rise in hypothalamic GnRH production before puberty
Andrea Messina et al. Nat Neurosci. 2016 Jun.
Free article
Erratum in
- Corrigendum: A microRNA switch regulates the rise in hypothalamic GnRH production before puberty.
Messina A, Langlet F, Chachlaki K, Roa J, Rasika S, Jouy N, Gallet S, Gaytan F, Parkash J, Tena-Sempere M, Giacobini P, Prevot V. Messina A, et al. Nat Neurosci. 2016 Jul 26;19(8):1115. doi: 10.1038/nn0816-1115a. Nat Neurosci. 2016. PMID: 27459406 No abstract available.
Abstract
A sparse population of a few hundred primarily hypothalamic neurons forms the hub of a complex neuroglial network that controls reproduction in mammals by secreting the 'master molecule' gonadotropin-releasing hormone (GnRH). Timely postnatal changes in GnRH expression are essential for puberty and adult fertility. Here we report that a multilayered microRNA-operated switch with built-in feedback governs increased GnRH expression during the infantile-to-juvenile transition and that impairing microRNA synthesis in GnRH neurons leads to hypogonadotropic hypogonadism and infertility in mice. Two essential components of this switch, miR-200 and miR-155, respectively regulate Zeb1, a repressor of Gnrh transcriptional activators and Gnrh itself, and Cebpb, a nitric oxide-mediated repressor of Gnrh that acts both directly and through Zeb1, in GnRH neurons. This alteration in the delicate balance between inductive and repressive signals induces the normal GnRH-fuelled run-up to correct puberty initiation, and interfering with this process disrupts the neuroendocrine control of reproduction.
Comment in
- Neuroendocrinology: microRNAs regulate puberty timing.
Geach T. Geach T. Nat Rev Endocrinol. 2016 Jul;12(7):372. doi: 10.1038/nrendo.2016.73. Epub 2016 May 13. Nat Rev Endocrinol. 2016. PMID: 27174024 No abstract available.
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