Summary |
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Variant origin |
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Variant description |
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Phenotypes |
View phenotypes and curated references for all genotypes (concatenated display).
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Notes |
Mapping and Phenotype information for this QTL, its variants and associated markersJ:116204Multiple cross mapping (MCM) was used to identify QTLs associated with ethanol induced activation of locomotor activity. The following F2 crosses were generated and screened for polymorphic markers: (C57BL/6J x DBA/2J)F2, (DBA/2J x LP/J)F2, (BALB/cJ x LP/J)F2, (BALB/cJ x DBA/2J)F2, (C57BL/6J x BALB/cJ)F2, and (C57BL/6J x LP/J)F2. Animals were administered 1.5 g/kg ethanol and monitored for activity for 20 minutes. Parental strains DBA/2J and BALB/cJ exhibit increased locomotor activity after ethanol challenge whereas parental strains C57BL/6J and LP/J exhibit decreased locomotor activity. QTL Analysis in the F2 Intercrosses:Previously identified QTL Actre1 (chr1) was duplicated in this study. This locus is associated with the 2.5-5 minute interval in the (DBA/2J x C57BL/6J)F2 cross with LOD=7.3.Actre1 was also detected in the (LP/J x C57BL/6)F2 cross with LOD=4.6.12.09.2015 Curator Note: Because Actre1 was originally mapped in J:70181 in 2001 using both a BXD RI population and an (C57BL/6J x DBA/2J) F2 intercross population, which differs from the (LP/J x C57BL/6J)F2 population, we consider the (LP/J x C57BL/6J)F2 cross a separate mapping experiment and have named the QTL Actre13.QTL Actre13 maps to mouse Chromosome 1 with a LOD score of 4.3 Another suggestive QTL on Chr 1 was detected in the (BALB/c x C57BL/6J)F2 intercross with LOD=3.4. Homozygosity for C57BL/6J-derived alleles at Actre1, Actre13 and at the suggestive QTL confered increased locomotor activation in all 3 crosses. Analysis of all 3 F2 crosses showed significantgenotype x phenotype interaction at 100 cM near D1Mit150.Significant linkage to ethanol-induced locomotor activation during the 2.5-5 minute interval mapped to 78.5 cM on mouse Chromosome 3 in the (DBA/2J x BALB/cJ)F2 cross near D3Mit44 (LOD=4.3). Thislocus is named Actre5 (activity response to ethanol 5). BALB/cJ-derived alleles at Actre5 confer increased locomotor activity. Suggestive linkage ethanol-induced locomotor activity was detected at 58.8 cM in the (LP/J x BALB/cJ)F2 cross near D3Mit216 (LOD=3.3).Suggestive linkage ethanol-induced locomotor activity was detected at 58.8 cM in the (LP/J x BALB/cJ)F2 cross near D3Mit216 (LOD=3.3).Actre6 (activity response to ethanol 6) mapped to 27 cM on mouse Chromosome 9 in the (LP/J x C57BL/6J)F2 cross near D9Mit130 (LOD=5.4).This locus is associated with ethanol-induced locomotor activation during the 5-20 minute interval with homozygosity for LP/J-derived alleles conferring decreased locomotor activation. Suggestive linkage mapped to4 9cM near D9Mit273 (LOD=3) in the (LP/JxBALB/c)F2 cross. Analysis of heteogeneous Analysis of heterogeneous stock animals (derived from C57BL/6J, DBA/2J, LP/J, and BALB/cJ) at the G5 generation suggest that 2 QTLs may be present in the Actre1 region at D1Mit355 (97 cM) and at D1Mit218 (67 cM).In both cases the C57BL/6J-derived allele is associated with increased locomotor activity. Previously identified QTL Actre2 (chr2) was analyzed in this study using heterogenous stock animals (derived from C57BL/6J, DBA/2J, LP/J, and BALB/cJ) at the G5 generation. A maximum LOD score of 5 was attained near D2Mit102-D2Mit62 (52cM - 65 cM) with C57BL/6J-derived alleles conferring increased locomotor activity. SNP analysis of G19 heterogeneous stock animals narrowed the Actre2 interval to a B6-LP:C-D2 biallelic haplotype block between 112.5 Mb and 117.5 Mb.12.09.2015 Curator Note: Because Actre2 was originally identified in J:71081 in 2001 using a much larger HS sample derived from 8 strains we consider the 4 strain HS stock used here to be a separate mapping experiment mapping a unique QTL labled Actre14. |
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References |
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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO) |
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last database update 10/29/2024 MGI 6.24 |
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