Project description:Puberty marks the end of childhood and achieve sexual maturation and fertility. The role of hypothalamic proteins in regulating puberty onset is unclear. We performed a comprehensive differential proteomics and phosphoproteomics analysis in prepubertal and pubertal goats to determine the roles of hypothalamic proteins and phosphoproteins during the onset of puberty.
Project description:Gene expression analysis of hypothalami from female animals at different juvenil developmental reproductive stages. Results provide insight into the role of the hypothalamus in controlling the onset of puberty.
Project description:Promoter methylation analysis of hypothalamc DNA from female rats at different juvenile developmental reproductive stages. Results provide insight into the role of the hypothalamus in controlling the onset of puberty.
Project description:To better understand the epigenetic mechanism underlying pubertal onset, the hypothalamic genome-wide chromatin accessibility patterns in mouse arcuate nucleus at early and late pubertal stages were explored. Female mice have been widely used in multiple studies on pubertal development as they present the similar molecular behaviors in HPG axis and stable cycles of menstrual calendar like human. Hypothalamic ARC underwent a huge epigenetic and genetic reprogramming to adapt to the response and feedback on sexual hormones during the stages of early pubertal (2-5-week of age) and late puberty (5-8-week of age) . We harvested 4- and 8-week hypothalamic ARC and employed ATAC-seq on a genome-wide scale. Combined with previous RRBS, RRHP and RNA-seq, the connections between DNA (hydroxyl)methylation in retroelements and gene expression were studied, emphasizing the importance of epigenetic alterations in regulating transcription in puberty onset.
Project description:Histone modification analysis of hypothalami from female animals at different juvenile developmental reproductive stages. Results provide insight into the role of the hypothalamus in controlling the onset of puberty.
Project description:Promoter methylation analysis of hypothalamc DNA from female rats at different juvenile developmental reproductive stages. Results provide insight into the role of the hypothalamus in controlling the onset of puberty. SD rats were housed (4/cage) in a controlled environment and euthanized at different ages (Early Juvenile: 21 days, Late Juvenile: 28 days, Late Proestus (the day of first ovulation): 31 days. Rats were anesthetized and brains were rapidly removed. The hypothalamus was dissected away from the rest of the brain and flash frozen. Total RNA and DNA was isolated from each sample using AllPrep DNA/RNA Mini Kit-Qiagen (Valencia, CA).
Project description:To better understand the epigenetic mechanism underlying pubertal onset, the hypothalamic genome-wide DNA methylation and hydroxymethylation patterns as well as the transcription profiles in mouse arcuate nucleus at early and late pubertal stages were explored. Female mice have been widely used in multiple studies on pubertal development as they present the similar molecular behaviors in HPG axis and stable cycles of menstrual calendar like human. Hypothalamic ARC underwent a huge epigenetic and genetic reprogramming to adapt to the response and feedback on sexual hormones during the stages of early pubertal (2-5-week of age) and late puberty (5-8-week of age) . We harvested 4- and 8-week hypothalamic ARC and employed RNA-seq, reduced representation bisulfite sequencing (RRBS) and hydroxymethylation profiling (RRHP) on a genome-wide scale. We identified a large number of differential expressed genes (DEGs) and differential 5(h)mC signals across the whole genome. We discovered novel connections between DNA (hydroxyl)methylated modification and gene expression, emphasizing the importance of epigenetic alterations in regulating transcription in puberty onset.