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Role of Caveolin 1 in metabolic programming of fetal brain (bulk RNA-seq data)

ABSTRACT: Caveolae are plasma membrane invaginations found in most cells of mammals. Caveolin-1 (Cav1) encodes a major protein of the lipid rafts of these membrane structures. Cav1-null mice, though viable, show various phenotypic defects. At an early adult age, these mice show brain aging that resemble brain of one and half year old wildtype mice, and exhibit symptoms that are hallmarks of Alzheimer’s disease. It is not known if the ablation of Cav1 in these mice impacts the brain at the fetal stage that then influences brain function later in life. RNA-seq was performed to profile gene expression of fetal brain (gestation day 15) and aging brain (week 70) of Cav1 knockout mice. The data was comapred with genes expression data of fetal brain (gestation day 15) and aging brain (week 70) of wildtype mice from our earlier study.

ORGANISM(S): Mus musculus

PROVIDER: GSE215139 | GEO | 2023/09/20

REPOSITORIES: GEO

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Role of Caveolin 1 in metabolic programming of fetal brain

Project description:Caveolae are plasma membrane invaginations found in most cells of mammals. Caveolin-1 (Cav1) encodes a major protein of the lipid rafts of these membrane structures. Cav1-null mice, though viable, show various phenotypic defects. At an early adult age, these mice show brain aging that resemble brain of one and half year old wildtype mice, and exhibit symptoms that are hallmarks of Alzheimer’s disease. It is not known if the ablation of Cav1 in these mice impacts the brain at the fetal stage that then influences brain function later in life. Single nuclei RNA sequencing was performed with fetal brain of wildtype and Cav1 knockout mice. Results showed that specific metabolism genes were differentially expressed bewteen different glial cells.

2023-09-20 | GSE214759 | GEO

Fetal origin of sex-bias brain aging

Project description:DNA methylation plays crucial roles during fetal development as well as aging. Whether the aging of the brain is programmed at the fetal stage remains untested. To test this hypothesis, mouse epigenetic clock (epiclock) was profiled in fetal (gestation day 15), postnatal (day 5), and aging (week 70) brain of male and female C57BL/6J inbred mice. Data analysis showed that on week 70, the female brain was epigenetically younger than the male brain. Predictive modeling by neural network identified specific methylations in the brain at the developing stages that were predictive of epigenetic state of the brain during aging. Transcriptomic analysis showed coordinated changes in the expression of epiclock genes in the fetal brain relative to the placenta. Whole-genome bisulfite sequencing identified sites that were methylated both in the placenta and fetal brain in a sex-specific manner. Epiclock genes and genes associated with specific signaling pathways, primarily the gonadotropin-releasing hormone receptor (GnRHR) pathway, were associated with the sex-bias methylations in the placenta as well as the fetal brain. Transcriptional crosstalk among the epiclock and GnRHR pathway genes was evident in the placenta that was maintained in the brain during development as well as aging. Collectively, these findings suggest that sex differences in the aging of the brain are of fetal origin and epigenetically linked to the placenta.

2022-08-22 | GSE157553 | GEO

Fetal origin of sex-bias brain aging [RNA-seq]

Project description:In this study, gene expression of brain from postnatal (day 5) and aging (week 70) mice (C57BL/6J) was profiled. The data was used to infer transcriptional network of genes associated with epigenetic clock and GnRHR pathway in the brain. The results of this study suggested that brain aging originated early-in life.

2022-10-12 | GSE215138 | GEO

The expression profiles of 82 novel and 245 known human imsRNAs

2010-12-21 | GSE26196 | GEO

The expression profiles of 82 novel and 245 known human imsRNAs

Project description:The expression profiling of 245 known and 82 novel imsRNAs (intermediate-size noncoding RNAs, 50-500nt, which were identified from human fetal brain tissue) across different human fetal tissues (brain, heart, liver, lung and spleen at the 24-week gestation stage), different fetal brain gestational stages (13w, 14w, 20w, and 24w) and two human brain tumor cell lines (SHSY-5Y and U251). The analysis was based on the loop design method, in which all combinations of two samples were simultaneously hybridized to a microarray, each of the two sample labeled with a different fluorescent probe (Cy3 or Cy5).

2010-12-21 | E-GEOD-26196 | biostudies-arrayexpress

Expression data from 15 month old rat brain subjected to fructose fetal programming

Project description:Fructose has recently been observed to affect brain metabolism and cognitive function in adults. However, possible fetal programming of brain metabolism induced by gestational fructose has not been examined. We evaluated mitochondrial function in the brain of aging (15 month) male offspring of Fischer F344 rat dams fed either a high-fructose diet (50% energy from fructose) or a matched control diet during early life (gestation and lactation). We used microarrays to detail changes in global programme of gene expression in offspring brains from rats subjected to either a control diet or a high fructose diet during gestation and lactation

2014-12-01 | GSE50151 | GEO

Identification of differentially expressed genes in fetal and postnatal pig skeletal muscle

Project description:Fetal myogenesis and postnatal skeletal muscle hypertrophy in growing pigs are critical yet poorly understood processes. Global gene expression analyses will increase understanding of these processes by identifying key genes and pathways controlling skeletal muscle development. For this study, a pig 70-mer oligonucleotide microarray was used to identify differentially expressed genes in hind limb skeletal muscle of pigs at 60 days of gestation and 7 weeks of age. This oligonucleotide microarray experiment revealed 162 genes that were differentially expressed between 60 day fetal and 7 week postnatal samples. Relative real-time RT-PCR was used to confirm differential expression of three genes. This experiment identified genes exhibiting different developmental patterns of gene expression in pig skeletal muscle. Oligonucleotide microarrays used for this study consisted of 13,297 70-mer oligos (Pig Array-Ready Oligo Set v. 1.0 and Pig Oligo Extension Set v. 1.0, Qiagen, Inc., Valencia, CA) each spotted once on a single slide . Controls included 76 Arabidopsis thaliana gene spots, 17 beta tubulin spots, 17 glyceraldehyde-3-phosphate dehydrogenase spots, 85 heat shock protein gene spots, 69 ribosomal protein gene spots, 112 randomly generated negative control spots and 470 blanks. The oligonucleotide microarray was screened with samples obtained from pigs at 60 days of gestation and 7 weeks of age postnatal (n = 3 per age). Six oligonucleotide microarray slides were screened. All samples were used twice, labeled once with Cy3 and once with Cy5, and each 60 day gestation sample was randomly paired with two different 7 week postnatal samples.

2010-07-01 | E-GEOD-4958 | biostudies-arrayexpress

Relative protein quantification in mouse hippocampal synaptosomes during aging series

Project description:Age-related cognitive decline is a serious health concern in our aging society. Decreased cognitive function observed during healthy brain aging is most likely caused by changes in brain connectivity and synaptic dysfunction in particular brain regions. Here we show that aged C57BL/6J wildtype mice have hippocampus-dependent spatial memory impairments. To identify the molecular mechanisms that are relevant to these memory deficits we investigated the temporal profile of mouse hippocampal synaptic proteome changes at 20, 40, 50, 60, 70, 80, 90 and 100 weeks of age. Extracellular matrix proteins were the only group of proteins that showed a robust and progressive upregulation over time. This was confirmed by immunoblotting and histochemical analysis, indicating that the increased levels of hippocampal extracellular matrix may limit synaptic plasticity as a potential cause of age-related cognitive decline. In addition, we observed that stochasticity in synaptic protein expression increased with age, in particular for proteins that were previously linked with various neurodegenerative diseases, whereas low variance in expression was observed for proteins that play a basal role in neuronal function and synaptic neurotransmission. Together, our findings show that both specific changes and increased variance in synaptic protein expression are associated with aging and may underlie reduced synaptic plasticity and impaired cognitive performance at old age.

2014-09-10 | PXD001135 | Pride

Genomics of the ovine fetal brain ontogeny during the last stage of gestation

Project description:Normal development in the brain requires temporal changes in gene expression. A better understanding of the genomics of the fetal brain during late gestation can help to improve our understanding of the molecular events that enable the newborn to survive extra-uterine life. The purpose of the present study is to model changes and coherence of gene expression in cerebral cortex, brainstem, hippocampus, and hypothalamus throughout the second half of gestation. We used the sheep as an animal model to identify co-expressed genes in different regions of the ovine fetal brain, from mid-gestation (80 days) to one day of postnatal life. In the ewe, gestation length varies from 142 to 152 days, with an average of 147 days. Using a newly-available ovine array and weighted gene co-expression network analysis (WGCNA), we tested the hypothesis that the resulting products of genes expressed in a similar pattern through the last stage of gestation in different brain regions are functionally related and could play an important role in the normal fetal development.

2014-06-30 | GSE50460 | GEO

Identification of differentially expressed genes in fetal and postnatal pig skeletal muscle

2006-09-01 | GSE4958 | GEO

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