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Affiliation of Author(s):华中农业大学

Journal:MOLECULAR AND CELLULAR ENDOCRINOLOGY

Place of Publication:IRELAND

Key Words:Chicken，Sex-biased miRNAs，miR-107，Gonadal development，NR5a1

Abstract:Several studies indicate that sexual dimorphic microRNAs (miRNAs) in chicken gonads are likely to have important roles in sexual development, but a more global understanding of the roles of miRNAs in sexual differentiation is still needed. To this end, we performed miRNA expression profiling in chicken gonads at embryonic day 5.5 (E5.5). Among the sex-biased miRNAs validated by qRT-PCR, twelve male-biased and six female-biased miRNAs were consistent with the sequencing results. Bioinformatics analysis revealed that some sex-biased miRNAs were potentially involved in gonadal development. Further functional analysis found that over-expression of miR-107 directly inhibited nuclear receptor subfamily 5 group A member 1 (NR5a1), and its downstream cytochrome P450 family 19 subfamily A, polypeptide 1 (CYP19A1). However, anti-Mullerian hormone (AMH) was not directly or indirectly regulated by miR-107. Overall results indicate that miR-107 may specifically mediate avian ovary-development by post transcriptional regulation of NR5a1 and CYP19A1 in estrogen signaling pathways. (C) 2016 Elsevier Ireland Ltd. All rights reserved.

Indexed by:Journal paper

Volume:429

Issue:C

Page Number:29-40

ISSN No.:0303-7207

Translation or Not:no

Date of Publication:2016-03-17

Included Journals:SCI

DOI number:10.1016/j.mce.2016.03.033

Impact Factor:4.467

First Author:苗楠

Co-author:侯岳,王馨

Correspondence Author:龚炎长,俸艳萍