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Fine Time-Course Expression Analysis of Mammalian Sex Determination in 129S1/SvImJ and C57BL/6J XX and XY mice

ABSTRACT: We analyzed the differentiation of the bipotential gonad into a testis or an ovary in 2 strains of mice - 129S1/SvImJ (129S1) and C57BL/6J (B6). Our results provide a high resolution view of the initiation and canalization of the differentiation of the gonad. It also reveals global differences in the transcriptome between 129S1 and B6 mice. Total RNA was obtained from XX and XY embryonic mouse gonads at 6 equally spaced time points between embryonic day (E) 11.0 and E12.0 from 129S1 and B6 mice. Mice were staged using tail somite numbers

ORGANISM(S): Mus musculus

SUBMITTER: Anirudh Natarajan

PROVIDER: E-GEOD-41948 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Fine Time-Course Expression Analysis of Mammalian Sex Determination in 129S1/SvImJ and C57BL/6J XX and XY mice

Project description:We analyzed the differentiation of the bipotential gonad into a testis or an ovary in 2 strains of mice - 129S1/SvImJ (129S1) and C57BL/6J (B6). Our results provide a high resolution view of the initiation and canalization of the differentiation of the gonad. It also reveals global differences in the transcriptome between 129S1 and B6 mice.

2013-06-11 | GSE41948 | GEO

Mus musculus strain:129S1/SvImJ

Project description:Mus musculus strain:129S1/SvImJ Genome sequencing and assembly

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Transcription profiling of mouse strain differences in e11.5 XY gonad transcriptome suggest a mechanism for the sensitivity of C57BL/6J to sex reversal

Project description:Transcriptional profiling of individual mouse embryonic (e11.5) XY gonads comparing inbred strains that are sensitive (C57BL/6J) and resistant (129S1/SvImJ) to XY sex reversal, and their reciprocal F1 hybrids. Experiment Overall Design: Two-color Agilent microarray profiles of 20 individual pairs of e11.5 XY gonads, including 5- C57BL/6J, 5- 129S1/SvImJ, 5- (B6x129S1)F1, and 5- (129S1xB6)F1 samples. Within each strain, samples were collected from multiple litters to account for potential litter biases. All samples were processed following the same protocol.

2009-12-03 | E-GEOD-16917 | biostudies-arrayexpress

Coxsackievirus B3 (CVB3) infection of 129S1 and 129X1 (heart tissue day 6)

Project description:We infected two strains of mice, 129S1/SvImJ and 129X1/SvJ, with coxsackievirus type b3 (CVB3) at a dose of 500 pfu/g. 129S1 mice developed increased cardiopathology despite equal viral replication. We hypothesized that the increased cardiopathology might result from an ongoing pathologic host response that we could characterize by global expression profiling. Gene expression was assessed in hearts from 129S1 and 129X1 mice that were uninfected or infected for 6 days.

2013-04-01 | GSE44706 | GEO

Coxsackievirus B3 (CVB3) infection of 129S1 and 129X1 (heart tissue day 6)

2013-04-01 | E-GEOD-44706 | biostudies-arrayexpress

Candidate genes for obesity revealed from a C57BL/6J x 129S1/SvImJ intercross.

Project description:ObjectiveTo identify the genes controlling body fat, we carried out a quantitative trait locus (QTL) analysis using C57BL/6J (B6) and 129S1/SvImJ (129) mice, which differ in obesity susceptibility after consuming an atherogenic diet.MethodsMice were fed chow until 8 weeks and an atherogenic diet from 8 to 16 weeks; body fatness was measured by X-ray absorptiometry in 528 (B6 x 129) F(2) at 8 and 16 weeks. A high-density genome scan was performed using 508 polymorphic markers. After identifying the genetic loci, we narrowed the QTL using comparative genomics and bioinformatics.ResultsThe percentage of body fat was significantly linked to loci on chromosomes (Chr) 1 (22, 68 and 173 Mb), 4 (74 Mb), 5 (73 Mb), 7 (88 Mb), 8 (43 and 80 Mb), 9 (55 Mb), 11 (115 Mb) and 12 (32 Mb); three suggestive loci on Chrs 6 (76 Mb), 9 (30 Mb) and 16 (26 Mb) and two pairs of interacting loci (Chr 2 at 99.8 Mb with Chr 7; Chr 1 at 68 Mb with Chr 11). Comparative genomics narrowed the QTL intervals by 20-57% depending on the chromosome; in most cases, haplotype analysis further narrowed them by about 90%.ConclusionsOur analysis identified 15 QTL for percentage of body fat. We narrowed the QTL using comparative genomics and haplotype analysis and suggest several candidate genes: Apcs on Chr 1, Ppargc1a on Chr 5, Ucp1 on Chr 8, Angptl6 on Chr 9 and Lpin1 on Chr 12.

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Genomic imprinting of XX spermatogonia and XX oocytes recovered from XX<-->XY chimeric testes.

Project description:We produced XX<-->XY chimeras by using embryos whose X chromosomes were tagged with EGFP (X*), making the fluorescent green female (XX*) germ cells easily distinguishable from their nonfluorescent male (XY) counterparts. Taking advantage of tagging with EGFP, the XX* "prospermatogonia" were isolated from the testes, and the status of their genomic imprinting was examined. It was shown that these XX cells underwent a paternal imprinting, despite their chromosomal constitution. As previously indicated in sex-reversal XXsxr testes, we also found a few green XX* germ cells developed as "eggs" within the seminiferous tubules of XX*<-->XY chimeric testes. These cells were indistinguishable from XX* prospermatogonia at birth but resumed oogenesis in a testicular environment. The biological nature of the "testicular eggs" was examined by recovering the eggs from chimeric testes. The testicular eggs not only formed an egg-specific structure, the zona pellucida, but also were able to fuse with sperm. The collected testicular eggs were indicated to undergo maternal imprinting, despite the testicular environment. The genomic imprinting did not always follow the environmental conditions of where the germ cells resided; rather, it was defined by the sex that was chosen by the germ cells at early embryonic stage.

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Deficits across multiple behavioral domains align with susceptibility to stress in 129S1/SvImJ mice.

Project description:Acute physical or psychological stress can elicit adaptive behaviors that allow an organism maintain homeostasis. However, intense and/or prolonged stressors often have the opposite effect, resulting in maladaptive behaviors and curbing goal-directed action; in the extreme, this may contribute to the development of psychiatric conditions like generalized anxiety disorder, major depressive disorder, or post-traumatic stress disorder. While treatment of these disorders generally focuses on reducing reactivity to potentially threatening stimuli, there are in fact impairments across multiple domains including valence, arousal, and cognition. Here, we use the genetically stress-susceptible 129S1 mouse strain to explore the effects of stress across multiple domains. We find that 129S1 mice exhibit a potentiated neuroendocrine response across many environments and paradigms, and that this is associated with reduced exploration, neophobia, decreased novelty- and reward-seeking, and spatial learning and memory impairments. Taken together, our results suggest that the 129S1 strain may provide a useful model for elucidating mechanisms underlying myriad aspects of stress-linked psychiatric disorders as well as potential treatments that may ameliorate symptoms.

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Effect of c-Maf mutation on Mafb-GFP-positive FACS-purified cells in the E12.5 mouse gonad

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2013-11-20 | E-GEOD-41715 | biostudies-arrayexpress

Quantitative trait loci for sensitivity to ethanol intoxication in a C57BL/6J×129S1/SvImJ inbred mouse cross.

Project description:Individual variation in sensitivity to acute ethanol (EtOH) challenge is associated with alcohol drinking and is a predictor of alcohol abuse. Previous studies have shown that the C57BL/6J (B6) and 129S1/SvImJ (S1) inbred mouse strains differ in responses on certain measures of acute EtOH intoxication. To gain insight into genetic factors contributing to these differences, we performed quantitative trait locus (QTL) analysis of measures of EtOH-induced ataxia (accelerating rotarod), hypothermia, and loss of righting reflex (LORR) duration in a B6×S1 F2 population. We confirmed that S1 showed greater EtOH-induced hypothermia (specifically at a high dose) and longer LORR compared to B6. QTL analysis revealed several additive and interacting loci for various phenotypes, as well as examples of genotype interactions with sex. QTLs for different EtOH phenotypes were largely non-overlapping, suggesting separable genetic influences on these behaviors. The most compelling main-effect QTLs were for hypothermia on chromosome 16 and for LORR on chromosomes 4 and 6. Several QTLs overlapped with loci repeatedly linked to EtOH drinking in previous mouse studies. The architecture of the traits we examined was complex but clearly amenable to dissection in future studies. Using integrative genomics strategies, plausible functional and positional candidates may be found. Uncovering candidate genes associated with variation in these phenotypes in this population could ultimately shed light on genetic factors underlying sensitivity to EtOH intoxication and risk for alcoholism in humans.

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