1. Resistance to plague of Mus spretus SEG/Pas mice requires the combined action of at least four genetic factors
- Author
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Charlène Blanchet, Emilia Pachulec, Lucie Chevallier, Jean-Jacques Panthier, Elisabeth Carniel, Jean Jaubert, Christian E. Demeure, Xavier Montagutelli, Génétique Fonctionnelle de la Souris, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Yersinia, Institut Pasteur [Paris] (IP), LC is a recipient of a DGA (Délégation Générale pour l’Armement) fellowship. The Mouse functional Genetics Unit is supported by Merck Serono and by the ‘Initiative d’excellence’ Project Integrative Biology of Emerging Infectious Diseases., We thank Simon Foote, Beverley Paigen and Ken Paigen for fruitful discussions. We are grateful to Sofia Filali and Nicolas Cabanel for technical expertise in culture of Yersinia pestis CO92, and to Laurent Guillemot for technical assistance in experimental infections of mice. We thank Isabelle Lanctin for careful breeding of the SEG/Pas colony, ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010), Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), and Institut Pasteur [Paris]
- Subjects
Male ,Yersinia pestis ,[SDV.IMM.II]Life Sciences [q-bio]/Immunology/Innate immunity ,Mice ,0302 clinical medicine ,Inbred strain ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,MESH: Animals ,Genetics (clinical) ,Disease Resistance ,Genetics ,0303 health sciences ,biology ,Phenotype ,[SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunology ,Disease Progression ,Female ,MESH: Disease Progression ,congenic strain ,Mus spretus ,Quantitative Trait Loci ,030231 tropical medicine ,Immunology ,Congenic ,MESH: Yersinia pestis ,MESH: Disease Resistance ,Quantitative trait locus ,MESH: Plague ,resistance ,Mice, Congenic ,03 medical and health sciences ,MESH: Mice, Congenic ,MESH: Mice, Inbred C57BL ,Animals ,Allele ,MESH: Mice ,Alleles ,mouse ,030304 developmental biology ,MESH: Alleles ,biology.organism_classification ,[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology ,Genetic architecture ,plague ,MESH: Male ,MESH: Quantitative Trait Loci ,Mice, Inbred C57BL ,MESH: Female - Abstract
International audience; We have previously described SEG/Pas as the first mouse inbred strain able to survive subcutaneous injection of virulent Yersinia pestis, the agent of plague, and we identified Yprl1, Yprl2 and Yprl3 as three quantitative trait loci (QTLs) controlling this exceptional phenotype in females from a backcross between SEG/Pas and C57BL/6 strains. We have now developed congenic strains to further characterize the extent and effect of these genomic regions. In this study, we confirm the importance of two of these regions, both in males and females, while the third one may well be a spurious association. We show that no genomic region alone is able to increase the survival of C57BL/6 mice, but that C57BL/6 mice carrying both Yprl2 and Yprl3 exhibit intermediate resistance. Each of these two QTLs contains at least two subregions, which are required to increase survival. Finally, through the analysis of congenic strains in an F1 background, we establish the mode of inheritance of the SEG-derived resistance alleles. Altogether, this study has clarified and enhanced our understanding of the genetic architecture of resistance to plague in SEG/Pas mice.
- Published
- 2013