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  • 1
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nadeau, J H -- Balling, R -- Barsh, G -- Beier, D -- Brown, S D -- Bucan, M -- Camper, S -- Carlson, G -- Copeland, N -- Eppig, J -- Fletcher, C -- Frankel, W N -- Ganten, D -- Goldowitz, D -- Goodnow, C -- Guenet, J L -- Hicks, G -- Hrabe de Angelis, M -- Jackson, I -- Jacob, H J -- Jenkins, N -- Johnson, D -- Justice, M -- Kay, S -- Kingsley, D -- Lehrach, H -- Magnuson, T -- Meisler, M -- Poustka, A -- Rinchik, E M -- Rossant, J -- Russell, L B -- Schimenti, J -- Shiroishi, T -- Skarnes, W C -- Soriano, P -- Stanford, W -- Takahashi, J S -- Wurst, W -- Zimmer, A -- International Mouse Mutagenesis Consortium -- New York, N.Y. -- Science. 2001 Feb 16;291(5507):1251-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, BRB 624, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA. jhn4@po.cwru.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11233449" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; *Computational Biology ; Costs and Cost Analysis ; Genes/physiology ; Genetic Techniques ; *Genome ; *Genomics ; International Cooperation ; Mice/*genetics ; Mutagenesis ; Mutation ; Phenotype ; Private Sector ; Public Sector ; Research Support as Topic ; *Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-08-09
    Description: The neurological mutant mouse strain E1 is a model for complex partial seizures in humans. The inheritance of epileptic seizures with seven conventional chromosomal markers and over 60 endogenous proviral markers was studied by means of back-crosses of E1 with two seizure-resistant strains, DBA/2J and ABP/LeJ. The major gene responsible for this epileptic phenotype (El-1) was localized to a region distal with respect to the centromere on chromosome 9. At least one other gene, El-2, linked to proviral markers on chromosome 2, also influences the seizure phenotype. In addition, a potential modifier of seizures was detected in the DBA/2J background. The location of El-1 on distal chromosome 9 may allow identification of an epilepsy candidate gene in humans on the basis of conserved synteny with human chromosome 3.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rise, M L -- Frankel, W N -- Coffin, J M -- Seyfried, T N -- NS 23355/NS/NINDS NIH HHS/ -- R35CA44385/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Aug 9;253(5020):669-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Boston College, Chestnut Hill 02167.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1871601" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping ; Crosses, Genetic ; Epilepsy/*genetics ; Female ; Genetic Predisposition to Disease ; Male ; Mice ; Mice, Inbred Strains ; Mice, Neurologic Mutants/*genetics ; Recombination, Genetic ; Seizures/genetics ; Software
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Mammalian genome 5 (1994), S. 473-478 
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We present a linkage map of intracisternal A-particle (IAP) proviral loci. The IAP family consists of 2000 endogenous proviral elements that are widely dispersed in the mouse genome. The map was constructed by using an interspecific backcross and markers defined by oligonucleotide probes specific for subclasses of expressed IAP elements. In genomic DNA from C57BL/6J mouse, these probes each detected from 12 to 44 HindIII restriction fragments that represent junctions between proviral and 5′-flanking DNA. The fragments have characteristic strain distribution patterns (SDPs) that are particularly polymorphic in the DNAs of C57BL/6J and Mus spretus mice used for the backcross. IAP loci were placed on the map by comparison of their distribution patterns with those of known genetic markers in the backcross. The map includes 51 IAP loci that have not been previously mapped and 23 IAP proviruses that had been previously mapped in recombinant inbred (RI) strains. Comparable map positions were obtained with the IAP markers in the interspecific backcross and the RI strains. The mapped IAP loci were widely dispersed on the X Chromosome (Chr) and all of the autosomes except Chrs 9 and 19, providing useful genetic markers for linkage studies.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Mammalian genome 5 (1994), S. 275-281 
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We characterized endogenous proviruses in C57BL/6J, DBA/2J, and C3H/HeJ mouse strains with oligonucleotide probes derived from long terminal repeat (LTR) sequences of three classes of nonecotropic murine leukemia virus. The segregation of proviral-host DNA junction fragments was followed in BXH and BXD recombinant inbred (RI) strain sets, and most fragments mapped readily to defined chromosomal regions. Most of the LTR fragments appear to correspond to proviruses mapped previously with oligonucleotide env region probes of the same viral class. At least 22 elements represent new proviral loci, no more than half of which may be solo LTRs, and an additional six may correspond to proviruses identified previously with less specific hybridization probes. Together with proviruses identified previously with env probes, the LTR probe-reactive elements represent the majority of endogenous murine leukemia proviruses in the mouse genome.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We established two mouse interspecific backcross DNA panels, one containing 94 N2 animals from the cross (C57BL/6J × Mus spretus)F1 × C57BL/6J, and another from 94 N2 animals from the reciprocal backcross (C57BL/6J × SPRET/Ei)F1 × SPRET/Ei. We prepared large quantities of DNA from most tissues of each animal to create a community resource of interspecific backcross DNA for use by laboratories interested in mapping loci in the mouse. Initial characterization of the genetic maps of both panels has been completed. We used MIT SSLP markers, proviral loci, and several other sequence-defined genes to anchor our maps to other published maps. The BSB panel map (from the backcross to C57BL/6J) contains 215 loci and is anchored by 45 SSLP and 32 gene sequence loci. The BSS panel map (from the backcross to SPRET/Ei) contains 451 loci and is anchored by 49 SSLP loci, 43 proviral loci, and 60 gene sequence loci. To obtain a high density of markers, we used motif-primed PCR to “fingerprint” the panel DNAs. We constructed two maps, each representing one of the two panels. All new loci can be located with a high degree of certainty on the maps at current marker density. Segregation patterns in these data reveal several examples of transmission ratio distortion and permit analysis of the distribution of crossovers on individual chromosomes.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Congenic mouse strains made by transferring epilepsy predisposing alleles El1, El2, and El3 from the EL/Suz strain to the ABP/Le recipient were tested for seizure frequency following gentle rhythmic stimulation. Mice homozygous for El2, but not El1 or El3, experienced seizures much more frequently than ABP controls, while respective El1 homozygotes and El2 heterozygotes had only a modest increase over ABP, and El3 homozygotes showed no increase. Association between marker genotypes and seizure trequency in small intra-strain crosses showed that the phenotypic effects of El2 map to the selected interval, and that segregation of El2 accounts for virtually all genetic effects. However, in separating El2 from other EL susceptibility alleles, the seizure frequency phenotype was weaker and less heritable than in crosses between parental strains. These results confirm El2 as an important QTL and show that it has significant phenotypic effects in the absence of other EL-derived alleles, including El1. In addition, the present localization of El2 on Chr 2 suggests several potential candidate genes for El2, including the β subunit of phospholipase-C. The approach to dissecting complex traits by making congenic strains for individual QTL is discussed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Mammalian genome 5 (1994), S. 659-662 
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The cerebellar mouse mutation stumbler (stu) was mapped to proximal Chromosome (Chr) 2 with a recently developed polymerase chain reaction assay for endogenous retroviruses that vary between mouse strains. The stu locus resides between the markers D2Mit5 and D2Mit7. A number of developmentally or neurologically relevant candidate genes map in this region, including Bmi1, Dbh, Grin1, Notch1, Pax8, Rxra, and Spna2. Knowing the chromosomal localization of stu should simplify maintenance of the stumbler mouse stock and also enable analysis of the cerebellar defect in presymptomatic individuals.
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  • 8
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract EL/Suz (EL) mice experience recurrent seizures that are similar to common partial complex epilepsy in humans. In the mice, seizures occur naturally at 90–100 days of age, but can be induced in younger mice and analyzed as a semi-quantitative trait after gentle rhythmic stimulation. A previous genetic mapping study of EL backcrosses to the strains ABP/LeJ or DBA/2J showed two quantitative trait loci (QTL) with large effects on seizure frequency (El1, Chr 9; El2, Chr 2) and implied the existence of other QTL with lesser effects. To further the understanding of EL-derived seizure alleles, we examined intercross progeny of EL and the strains ABP/LeJ and DDY/Jcl, and also a backcross of (EL x DDY)F1 hybrids to DDY. A new large-effect seizure frequency QTL was found (El5, Chr 14), a more minor QTL confirmed (El3, Chr 10), and two additional QTL proposed (El4, Chr 9; El6, Chr 11). The serotonin receptor gene, Htr2a, maps near and is a candidate for El5, and linkages of other serotonin receptor genes to seizure frequency QTL are noted. In addition, a strong gender effect was revealed, and epistasis was found between Chr 9 and Chr 14 markers. Despite this progress, however, our results revealed a more complex determinism of epilepsy in EL mice than previously described. In particular, no single El locus or pair was essential for frequent seizures, as QTL with large effects, such as El5, El2, and El1, were highly dependent on genetic context. Our studies highlight the importance of gene interaction in some complex mammalian traits defined by natural variation.
    Type of Medium: Electronic Resource
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  • 9
  • 10
    Publication Date: 2005-01-26
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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