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Inheritance of Chromatin Structures

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Updated: Aug 1, 2025

Chromatin Immunoprecipitation Assay for Tissue-specific Genes using Early-stage Mouse Embryos

Chromatin Immunoprecipitation Assay for Tissue-specific Genes using Early-stage Mouse Embryos

Published on: April 29, 2011

The single-cell chromatin accessibility landscape in mouse perinatal testis development.

Hoi Ching Suen¹, Shitao Rao^2,3, Alfred Chun Shui Luk¹

¹Developmental and Regenerative Biology Program, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong.

|April 25, 2023

Summary

This study maps the chromatin landscape of developing mouse testes, revealing key regulatory elements and transcription factors that control cell development. The findings provide a detailed blueprint of male germline and somatic cell regulation.

Keywords:

GWAS chromatin accessibility chromosomes developmental biology gene expression mouse scATAC-Seq testis development

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Area of Science:

Reproductive Biology
Genomics
Epigenetics

Background:

Spermatogenesis involves complex germ cell development and somatic microenvironment maturation.
Previous research focused on gene expression, overlooking the chromatin landscape's role in testicular cellular heterogeneity.

Purpose of the Study:

To analyze single-cell chromatin accessibility in mouse testes to understand regulatory programs.
To identify cis-regulatory elements and transcription factors governing testicular cell-type specification and maintenance.

Main Methods:

Single-cell sequencing assay for transposase-accessible chromatin (scATAC-Seq) on over 25,000 cells from developing mouse testes.
Analysis of chromatin accessibility profiles to deconvolve cell populations and identify regulatory elements.

Main Results:

scATAC-Seq successfully identified distinct testicular cell populations and cell-type-specific cis-regulatory elements.
Novel regulators of cell fate specification and maintenance were identified through transcription factor analysis.
Pseudotime reconstruction elucidated developmental dynamics, and previously unreported subpopulations of Sertoli and Leydig cells were discovered.
Candidate target genes and cell types for GWAS signals related to testosterone levels and coronary artery disease were defined.

Conclusions:

The study provides a high-resolution blueprint of the regulatory network ('regulon') in the mouse male germline and supporting somatic cells.
This dataset advances the understanding of gene regulation underlying testicular cell development and heterogeneity.