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© Xavier Montagutelli, Institut Pasteur
Publication : PloS one

Refined mapping of a quantitative trait locus on chromosome 1 responsible for mouse embryonic death

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in PloS one - 16 Aug 2012

Vatin M, Burgio G, Renault G, Laissue P, Firlej V, Mondon F, Montagutelli X, Vaiman D, Serres C, Ziyyat A

Link to Pubmed [PMID] – 22916247

PLoS ONE 2012;7(8):e43356

Recurrent spontaneous abortion (RSA) is defined as the loss of three or more consecutive pregnancies during the first trimester of embryonic intrauterine development. This kind of human infertility is frequent among the general population since it affects 1 to 5% of women. In half of the cases the etiology remains unelucidated. In the present study, we used interspecific recombinant congenic mouse strains (IRCS) in the aim to identify genes responsible for embryonic lethality. Applying a cartographic approach using a genotype/phenotype association, we identified a minimal QTL region, of about 6 Mb on chromosome 1, responsible for a high rate of embryonic death (∼30%). Genetic analysis suggests that the observed phenotype is linked to uterine dysfunction. Transcriptomic analysis of the uterine tissue revealed a preferential deregulation of genes of this region compared to the rest of the genome. Some genes from the QTL region are associated with VEGF signaling, mTOR signaling and ubiquitine/proteasome-protein degradation pathways. This work may contribute to elucidate the molecular basis of a multifactorial and complex human disorder as RSA.

https://www.ncbi.nlm.nih.gov/pubmed/22916247