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- Title
Maternal inheritance of the Gnas cluster mutation Ex1A- T affects size, implicating NESP55 in growth.
- Authors
Eaton, Sally; Hough, Tertius; Fischer-Colbrie, Reiner; Peters, Jo
- Abstract
Genes subjected to genomic imprinting are often associated with prenatal and postnatal growth. Furthermore, it has been observed that maternally silenced/paternally expressed genes tend to favour offspring growth, whilst paternally silenced/maternally expressed genes will restrict growth. One imprinted cluster in which this has been shown to hold true is the Gnas cluster; of the three proteins expressed from this cluster, two, Gsα and XLαs, have been found to affect postnatal growth in a number of different mouse models. The remaining protein in this cluster, NESP55, has not yet been shown to be involved in growth. We previously described a new mutation, Ex1A- T, which upon paternal transmission resulted in postnatal growth retardation due to loss of imprinting of Gsα and loss of expression of the paternally expressed XLαs. Here we describe maternal inheritance of Ex1A- T which gives rise to a small but highly significant overgrowth phenotype which we attribute to reduction of maternally expressed NESP55.
- Subjects
CYTOPLASMIC inheritance; GENOMIC imprinting; FETAL development; PHENOTYPES; EXONS (Genetics); MOLECULAR weights; GRANINS; GENETIC markers
- Publication
Mammalian Genome, 2013, Vol 24, Issue 7/8, p276
- ISSN
0938-8990
- Publication type
Academic Journal
- DOI
10.1007/s00335-013-9462-2