Human Molecular Genetics, Vol 6, 781-786, Copyright © 1997 by Oxford University Press
S Kobayashi, T Kohda, N Miyoshi, Y Kuroiwa, K Aisaka, O Tsutsumi, T Kaneko- Ishino and F Ishino
The mouse Peg1/Mest gene is an imprinted gene that is expressed
particularly in mesodermal tissues in early embryonic stages. It was the
most abundant imprinted gene among eight paternally expressed genes (Peg
1-8) isolated by a subtraction-hybridization method from a mouse embryonal
cDNA library. It has been mapped to proximal mouse chromosome 6, maternal
duplication of which causes early embryonic lethality. The human
chromosomal region that shares syntenic homology with this is 7q21-qter,
and human maternal uniparental disomy 7 (UPD 7) causes apparent growth
deficiency and slight morphological abnormalities. Therefore, at least one
paternally expressed imprinted gene seems to be present in this region. In
this report, we demonstrate that human PEG1/MEST is an imprinted gene
expressed from a paternal allele and located on chromosome 7q31-34, near
D7S649. It is the first imprinted gene mapped to human chromosome 7 and a
candidate for a gene responsible for primordial growth retardation
including Silver-Russell syndrome (SRS).
ARTICLES
Human PEG1/MEST, an imprinted gene on chromosome 7
Gene Research Center, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan.
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