The H19 locus: role of an imprinted non-coding RNA in growth and development.
The H19 gene produces a non-coding RNA, which is abundantly expressed during embryonic development and down-regulated after birth. Although this gene was discovered over 20 years ago, its function has remained unclear. Only recently a role was identified for the non-coding RNA and/or its microRNA partner, first as a tumour suppressor gene in mice, then as a trans-regulator of a group of co-expressed genes belonging to the imprinted gene network that is likely to control foetal and early postnatal growth in mice. The mechanisms underlying this transcriptional or post-transcriptional regulation remain to be discovered, perhaps by identifying the protein partners of the full-length H19 RNA or the targets of the microRNA. This first in vivo evidence of a functional role for the H19 locus provides new insights into how genomic imprinting helps to control embryonic growth.
Gabory
Anne
A
Biology of Development and Reproduction, INRA-ENVA, UMR 1198, Jouy en Josas, France.
Jammes
Hélène
H
Dandolo
Luisa
L
D000818:Animals; D018507:Gene Expression Regulation, Developmental / Q000235:genetics / Q000502:physiology*; D018392:Genomic Imprinting / Q000235:genetics / Q000502:physiology*; D006801:Humans; D035683:MicroRNAs / Q000235:genetics / Q000378:metabolism; D062085:RNA, Long Noncoding; D022661:RNA, Untranslated / Q000235:genetics / Q000378:metabolism*
C094335:H19 long non-coding RNA; D035683:MicroRNAs; D062085:RNA, Long Noncoding; D022661:RNA, Untranslated