Dataset Information

Next Generation Sequencing Quantitative Analysis of Small RNA in Livers of Adult Male Offspring of Obese Female Mice

ABSTRACT: Obesity during pregnancy is associated with increased risk of non-alcoholic fatty liver disease in the offspring. We used RNA next generation sequencing analysis (HiSeq2000) to have a glance at the miRNome in twelve week-old male offspring exposed to maternal obesity and weaned onto an obesogenic diet. Overall design: Thirty-five female C57BL/6J mice were fed either a standard control diet, RM1 [7% simple carbohydrates/3% lipids (w/w)] or an energy-rich obesogenic diet [10% simple carbohydrates/20% lipids (w/w)] plus sweetened condensed milk [55% simple carbohydrates, 8% lipids, 8% protein (w/w), supplemented with mineral and vitamin mix AIN93G]. Female mice were mated, and maintained on their diets until weaning. On post-natal day 21, male offspring were weaned onto either standard chow (RM1) or the obesogenic diet, generating 4 experimental groups: maternal and offspring control diet (CC), maternal control diet and offspring obesogenic diet (CO), maternal obesogenic diet and offspring control diet (OC), maternal and offspring obesogenic diet (OO). At 12 weeks of age, mice were killed by raising on a fasted state. Liver were dissected, and snap frozen. Three high quality RNA samples from each group were randomly selected and subjected to a cDNA library preparation for further sRNA sequencing using TruSeq RNA Library Preparation kit

INSTRUMENT(S): Illumina HiSeq 2000 (Mus musculus)

ORGANISM(S): Mus musculus

SUBMITTER: Lucas Pantaleao

PROVIDER: GSE134977 | GEO | 2019-07-27

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
	GSE134977_mature_sense_1_4.mat.txt.gz	Txt

Items per page:

1 - 1 of 1

Similar Datasets

Project description:Background: It is well established that maternal exercise during pregnancy improves metabolic outcomes associated with obesity in mothers and offspring, however, its effects on the gut microbiota of both mother and offspring, are unknown. Here, we investigated whether wheel running exercise prior to and during pregnancy and prolonged feeding of an obesogenic diet were associated with changes in the gut microbiomes of Sprague-Dawley rat dams and their offspring. Female rats were fed either chow or obesogenic diet, and half of each diet group were given access to a running wheel 10 days before mating until delivery, while others remained sedentary. 16S rRNA gene amplicon sequencing was used to assess gut microbial communities in dams and their male and female offspring around the time of weaning. Results: Statistical analyses at the operational taxonomic unit (OTU) level revealed that maternal obesogenic diet decreased gut microbial alpha diversity and altered abundances of bacterial taxa previously associated with obesity such as Bacteroides and Blautia in dams, and their offspring of both sexes. Distance based linear modeling revealed that the relative abundances of Bacteroides OTUs were associated with adiposity measures in both dams and offspring. We identified no marked effects of maternal exercise on the gut microbiota of obesogenic diet dams or their offspring. In contrast, maternal exercise decreased gut microbial alpha diversity and altered the abundance of 88 microbial taxa in offspring of control dams. Thirty of these taxa were altered in a similar direction in offspring of sedentary obesogenic vs. control diet dams. In particular, the relative abundances of Oscillibacter OTUs were decreased in offspring of both exercised control dams and sedentary obesogenic diet dams, and associated with blood glucose concentrations and adiposity measures. Analyses of predicted bacterial metabolic pathways inferred decreased indole alkaloid biosynthesis in offspring of both obesogenic diet and exercised control dams. Conclusions: Our data suggest that maternal exercise prior to and during pregnancy resulted in gut dysbiosis in offspring of control dams. Importantly, alterations in the maternal gut microbiota by obesogenic diet or obesity were transferred to their offspring.

Project description:Aims:Obesity during pregnancy increases risk of cardiovascular disease (CVD) in the offspring and individuals exposed to over-nutrition during fetal life are likely to be exposed to a calorie-rich environment postnatally. Here, we established the consequences of combined exposure to a maternal and post-weaning obesogenic diet on offspring cardiac structure and function using an established mouse model of maternal diet-induced obesity. Methods and results:The impact of the maternal and postnatal environment on the offspring metabolic profile, arterial blood pressure, cardiac structure, and function was assessed in 8-week-old C57BL/6 male mice. Measurement of cardiomyocyte cell area, the transcriptional re-activation of cardiac fetal genes as well as genes involved in the regulation of contractile function and matrix remodelling in the adult heart were determined as potential mediators of effects on cardiac function. In the adult offspring: a post-weaning obesogenic diet coupled with exposure to maternal obesity increased serum insulin (P?<?0.0001) and leptin levels (P?<?0.0001); maternal obesity (P?=?0.001) and a post-weaning obesogenic diet (P?=?0.002) increased absolute heart weight; maternal obesity (P?=?0.01) and offspring obesity (P?=?0.01) caused cardiac dysfunction but effects were not additive; cardiac dysfunction resulting from maternal obesity was associated with re-expression of cardiac fetal genes (Myh7: Myh6 ratio; P?=?0.0004), however, these genes were not affected by offspring diet; maternal obesity (P?=?0.02); and offspring obesity (P?=?0.05) caused hypertension and effects were additive. Conclusions:Maternal diet-induced obesity and offspring obesity independently promote cardiac dysfunction and hypertension in adult male progeny. Exposure to maternal obesity alone programmed cardiac dysfunction, associated with hallmarks of pathological left ventricular hypertrophy, including increased cardiomyocyte area, upregulation of fetal genes, and remodelling of cardiac structure. These data highlight that the perinatal period is just as important as adult-onset obesity in predicting CVD risk. Therefore, early developmental periods are key intervention windows to reduce the prevalence of CVD.

Dataset Information

Next Generation Sequencing Quantitative Analysis of Small RNA in Livers of Adult Male Offspring of Obese Female Mice

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure