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Cell-Free Fat Extract Improves Ovarian Function and Fertility in Mice with Advanced Age

ABSTRACT: Purpose: To assess changes in gene expression profiles of mouse ovarian gruanlosa cells from normal control mice, 11-month mice and 11-month mice treated with CEFFE. Methods:The control group comprised 8-week-old female mice, and the 10-month-old female mice were equally divided into two groups, Aged and Aged +CF groups. The mice from Aged +CF group were treated with 200 μL CEFFE (protein concentration: 3 μg/μL) via tail vein every two days for 2 weeks. At the same time, mice from Control and Aged group were injected with the same volume of saline. Then at the forth week ,ovaries were collected. Furthermore, the mRNA-Seq of mouse ovaries were performed to explore underlying mechanism of CEFFE. Results: 1302 genes were significantly increased and 1425 genes were significantly decreased in expression level between Aged vs Ctrl gorup.154 genes were significantly increased and 167 genes were significantly decreased in expression level between Aged+CF vs Aged gorup.

ORGANISM(S): Mus musculus

PROVIDER: GSE202124 | GEO | 2022/05/27

REPOSITORIES: GEO

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Project description:Gene-environment interactions mediated at the epigenetic level may provide an initial step in delivering an appropriate response to environmental changes. 5-hydroxymethylcytosine (5hmC), a DNA base derived from 5-methylcytosine (5mC), accounts for ~40% of modified cytosine in brain and has been implicated in DNA methylation-related plasticity. To identify the role of 5hmC in gene-environment interactions, we exposed both young (6-week-old) and aged (18-month-old) mice to both an enriched environment and a standard environment. Exposure to EE significantly improves learning and memory in aged mice and reduces 5hmC abundance in mouse hippocampus. Furthermore, we mapped the genome-wide distribution of 5hmC and found that the alteration of 5hmC modification occurred mainly at gene bodies. In particular, genes involved in axon guidance are enriched among the genes with altered 5hmC modification. These results together suggest that environmental enrichment could modulate the dynamics of 5hmC in hippocampus, which could potentially contribute to improved learning and memory in aged animals. To identify the role of 5hmC in gene-environment interactions, we exposed both young (6-week-old) and aged (18-month-old) C57B/6 mice to both an enriched environment (EE) and a standard environment. Exposure of mice to EE was achieved by keeping a group of mice in the EE chamber, which is larger than the standard cage, includes novel objects, such as toys of varied color and texture, tunnels, an exercise wheel for voluntary exercise, and extra bedding material, along with free access to food and water. Daily exposure to EE was kept at 5 hours during the daylight cycle for 4 consecutive weeks. Control animals were kept in their small cages that are used as standard housing cages (CE) containing bedding, food and access to water. YC, young mice exposing to control environment, YE, young mice exposing to enriched environment, AC, aged mice exposing to control environment, AE, aged mice exposed to enriched environment. Please note that 5hmC-containing DNA enrichment method was inspired by a unique character of beta-glucotransferase that can specifically add glucose to 5hmC modification. With a modified glucose conjugated with biotin, we are able to purify the 5hmC-containing DNA by biotin-streptavidin-based immunoprecipitation.

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Cell-Free Fat Extract Improves Ovarian Function and Fertility in Mice with Advanced Age

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