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Hippocampal RNA-Seq Data and Behavioral Data from an F2 intercross of Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

ABSTRACT: Hippocampal RNA-Seq Data and Behavioral Data from an F2 intercross of Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

PROVIDER: PRJNA937260 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23575300_1.fastq.gz	Fastqsanger.gz
	SRR23575300_2.fastq.gz	Fastqsanger.gz
	SRR23575400_1.fastq.gz	Fastqsanger.gz
	SRR23575400_2.fastq.gz	Fastqsanger.gz
	SRR23575301_1.fastq.gz	Fastqsanger.gz

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Hippocampal RNA-Seq Data and Behavioral Data from Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

Project description:Using selective breeding, we have produced two rat lines with highly contrasting heritable behaviors: bred Low Responders (bLR) are extremely inhibited and anxious in a novel environment, whereas bred High Responders (bHR) are exploratory and sensation-seeking. These traits map onto temperamental extremes predictive of internalizing vs. externalizing psychiatric disorders in humans and can model two divergent paths to drug abuse. To elucidate gene expression underlying these behavioral extremes, bHRxbLR were bred to produce a F0-F1-F2 cross. We then measured exploratory locomotion, anxiety-like behavior, and sensitivity to reward cues (Pavlovian Conditioned Approach) and performed hippocampal RNA sequencing in both F0s (n=24, n=6/phenotype/sex) and F2s (n=250, n=125/sex). The data included in this GEO upload is the data from the F0s from this experiment.

2025-02-07 | GSE225744 | GEO

Hippocampal RNA-Seq Data and Behavioral Data from an F2 intercross of Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

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Hippocampal RNA-Seq Data and Behavioral Data from Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

Project description:Hippocampal RNA-Seq Data and Behavioral Data from Rats Selectively-Bred to Show High or Low Levels of Locomotor Activity in a Novel Environment (bred High Responders vs. bred Low Responders)

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Low responders to endurance training exhibit greater atrophy

Project description:Divergent skeletal muscle phenotypes result from chronic resistance-type versus endurance-type contraction, reflecting the principle of training specificity. However, it is unclear whether there is a common set of genetic factors that influence skeletal muscle adaptation to disuse. Female rats were obtained from out-bred lines selectively bred from high responders to endurance training (HRT) or low responders to endurance training (LRT; n=6/group; generation 19). Both groups underwent 3 d of hindlimb immobilization to induce atrophy of the plantaris and soleus muscles prior to comparison to non-immobilization controls of the same genotype. RNA sequencing was performed to identify Gene Ontology Biological Processes with differential (LRT vs HRT) gene set enrichment. Running distance, determined well in advance of hindlimb immobilization, increased in response to aerobic training in HRT but not LRT. The atrophy response to hindlimb immobilization was exaggerated in LRT versus HRT. There were between-group differences for 140 processes in plantaris muscle and 118 processes in soleus muscle. In conclusion, low responders to aerobic endurance training exhibited exaggerated atrophy, and this was associated with differential gene expression. Thus, our findings suggest that genetic factors that underpin aerobic training maladaptation may also dysregulate the transcriptional activity of biological processes that contribute to adaptation to hindlimb immobilization.

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Hippocampal Gene Expression in bred High Responder (bHR) vs. bred Low Responder (bLR) Rats

Project description:Hippocampal Gene Expression in bred High Responder (bHR) vs. bred Low Responder (bLR) Rats

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Low responders to endurance training exhibit impaired hypertrophy and divergent biological process responses in skeletal muscle

Project description:Divergent skeletal muscle phenotypes result from chronic resistance-type- versus endurance-type contraction, reflecting the principle of training specificity. However, it is unclear whether there is a common set of genetic factors that influence skeletal muscle adaptation to different modes of training. Female rats were obtained from out-bred lines selectively bred from high responders to endurance training (HRT) or low responders to endurance training (LRT; n=6/group; generation 19). Both groups underwent 14 d of synergist ablation to induce functional overload of the plantaris muscle prior to comparison to non-overload controls of the same genotype. RNA sequencing was performed to identify Gene Ontology Biological Processes with differential (LRT vs HRT) gene set enrichment. Running distance, determined well in advance of synergist ablation, increased in response to aerobic training in HRT but not LRT (65 ±26% versus -6 ±18%, respectively, mean ±SD, p<0.0001). The hypertrophy response to functional overload was attenuated in LRT versus HRT (20.1 ±5.6% versus 41.6 ±16.1%, respectively, P = 0.015). There were between-group differences in the magnitude of response of 96 upregulated- and 101 downregulated pathways. A further 27 pathways showed contrasting upregulation or downregulation in LRT versus HRT in response to functional overload. In conclusion, low responders to aerobic endurance training were also low responders for compensatory hypertrophy, and attenuated hypertrophy was associated with differential gene expression. Thus, our findings suggest that genetic factors that underpin aerobic training maladaptation may also dysregulate the transcriptional activity of biological processes that contribute to adaptation to mechanical overload.

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Hippocampal Gene Expression in bred High Responder (bHR) vs. bred Low Responder (bLR) Rats: RNA-Seq Data from Generation F29

Project description:The strong pattern of comorbidity amongst psychiatric disorders is believed to be generated by a spectrum of latent liability, arising from a complex interplay of genetic risk and environmental factors, such as stress and childhood adversity. At one end of this spectrum are internalizing disorders, which are associated with neuroticism, anxiety, and depression. At the other end of the spectrum are externalizing disorders, which are associated with risk-taking and novelty-seeking, as seen in mania, substance abuse, and impulse-control disorders. We model the genetic contributions underlying both extremes of this spectrum by selectively breeding rats that react differently to a novel environment. “Bred high responder” (bHR) rats are highly exploratory with a disinhibited, novelty-seeking temperament, including hyperactivity, aggression, and drug-seeking. “Bred low responder” (bLR) rats are highly-inhibited, exhibiting reduced locomotor activity and anxious and depressive-like behavior. These behavioral propensities are robust and stable, beginning early in development similar to temperament in humans. This RNA-sequencing study examined gene expression in the hippocampus, a region critical for emotional regulation, in generation F29 male bHR rats and bLR rats from two ages: P14 and adulthood (n=2/group).

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Hippocampal Gene Expression in bred High Responder (bHR) vs. bred Low Responder (bLR) Rats: Affymetrix Microarray Data from Generation F4

Project description:The strong pattern of comorbidity amongst psychiatric disorders is believed to be generated by a spectrum of latent liability, arising from a complex interplay of genetic risk and environmental factors, such as stress and childhood adversity. At one end of this spectrum are internalizing disorders, which are associated with neuroticism, anxiety, and depression. At the other end of the spectrum are externalizing disorders, which are associated with risk-taking and novelty-seeking, as seen in mania, substance abuse, and impulse-control disorders. We model the genetic contributions underlying both extremes of this spectrum by selectively breeding rats that react differently to a novel environment. “Bred high responder” (bHR) rats are highly exploratory with a disinhibited, novelty-seeking temperament, including hyperactivity, aggression, and drug-seeking. “Bred low responder” (bLR) rats are highly-inhibited, exhibiting reduced locomotor activity and anxious and depressive-like behavior. These behavioral propensities are robust and stable, beginning early in development similar to temperament in humans. This Affymetrix (Rat Expression Set 230 A) microarray study examined gene expression in the hippocampus in generation F4 adult male bHR rats and bLR rats (n=6 per group).

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Hippocampal Gene Expression in bred High Responder (bHR) vs. bred Low Responder (bLR) Rats: Affymetrix Microarray Data from Generation F15

Project description:The strong pattern of comorbidity amongst psychiatric disorders is believed to be generated by a spectrum of latent liability, arising from a complex interplay of genetic risk and environmental factors, such as stress and childhood adversity. At one end of this spectrum are internalizing disorders, which are associated with neuroticism, anxiety, and depression. At the other end of the spectrum are externalizing disorders, which are associated with risk-taking and novelty-seeking, as seen in mania, substance abuse, and impulse-control disorders. We model the genetic contributions underlying both extremes of this spectrum by selectively breeding rats that react differently to a novel environment. “Bred high responder” (bHR) rats are highly exploratory with a disinhibited, novelty-seeking temperament, including hyperactivity, aggression, and drug-seeking. “Bred low responder” (bLR) rats are highly-inhibited, exhibiting reduced locomotor activity and anxious and depressive-like behavior. These behavioral propensities are robust and stable, beginning early in development similar to temperament in humans. This Affymetrix (Rat Expression Set 230 A) microarray study examined gene expression in the hippocampus in generation F15 male bHR rats and bLR rats at age postnatal day 14 (P14, n=6 per group).

2020-06-02 | GSE140595 | GEO

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