Generation of a Magoh conditional allele in mice.

Journal Article (Journal Article)

Magoh encodes a core component of the exon junction complex (EJC), which binds mRNA and regulates mRNA metabolism. Magoh is highly expressed in proliferative tissues during development. EJC components have been implicated in several developmental disorders including TAR syndrome, Richieri-Costa-Pereira syndrome, and intellectual disability. Existing germline null Magoh mice are embryonic lethal as homozygotes and perinatal lethal as heterozygotes, precluding detailed analysis of embryonic and postnatal functions. Here, we report the generation of a new genetic tool to dissect temporal and tissue-specific roles for Magoh in development and adult homeostasis. This Magoh conditional allele has two loxP sites flanking the second exon. Ubiquitous Cre-mediated deletion of the floxed allele in a heterozygous mouse (Magoh(del/+) ) causes 50% reduction of both Magoh mRNA and protein. Magoh(del/+) mice exhibit both microcephaly and hypopigmentation, thus phenocopying germline haploinsufficient Magoh mice. Using Emx1-Cre, we further show that conditional Magoh deletion in neural progenitors during embryonic development also causes microcephaly. We anticipate this novel conditional allele will be a valuable tool for assessing tissue-specific roles for Magoh in mammalian development and postnatal processes.

Full Text

Duke Authors

Cited Authors

  • McMahon, JJ; Shi, L; Silver, DL

Published Date

  • August 2014

Published In

Volume / Issue

  • 52 / 8

Start / End Page

  • 752 - 758

PubMed ID

  • 24771530

Pubmed Central ID

  • PMC4111959

Electronic International Standard Serial Number (EISSN)

  • 1526-968X

Digital Object Identifier (DOI)

  • 10.1002/dvg.22788


  • eng

Conference Location

  • United States