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Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

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Epigenetic Regulation

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Related Experiment Video

Updated: Jul 5, 2026

Reprogramming Mouse Embryonic Fibroblasts with Transcription Factors to Induce a Hemogenic Program

Reprogramming Mouse Embryonic Fibroblasts with Transcription Factors to Induce a Hemogenic Program

Published on: December 16, 2016

Germline recruitment in mice: a genetic program for epigenetic reprogramming.

Y Ohinata¹, Y Seki, B Payer

¹Riken Center for Developmental Biology, Kobe, Japan.

Ernst Schering Research Foundation Workshop

|August 15, 2006

Summary

Germ cell development involves Blimp1, a gene crucial for reprogramming the genome. This process erases specific epigenetic marks, enabling germ cells to achieve a totipotent state for generational continuity.

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Published on: January 11, 2019

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Last Updated: Jul 5, 2026

Reprogramming Mouse Embryonic Fibroblasts with Transcription Factors to Induce a Hemogenic Program

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Published on: December 16, 2016

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

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Published on: September 20, 2018

Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells

Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells

Published on: January 11, 2019

Area of Science:

Developmental Biology
Epigenetics
Genomics

Background:

Germ cells are essential for intergenerational continuity, requiring genome reprogramming to a totipotent state.
Understanding the molecular mechanisms governing mammalian germline uniqueness is critical.

Purpose of the Study:

To elucidate the molecular basis of mammalian germline properties.
To identify key factors and epigenetic modifications involved in germline specification.

Main Methods:

Identification of Blimp1 as a transcriptional repressor and its role in germline lineage.
Analysis of epigenetic modifications (H3K9me2, DNA methylation, H3K27me3) in germ cells.
Tracking Blimp1 expression in early embryonic development.

Main Results:

Blimp1, a transcriptional repressor, is identified as a critical determinant of the mouse germ cell lineage.
Blimp1 expression is detected in proximal epiblast cells earlier than previously known, marking the germline origin.
Primordial germ cells undergo demethylation of H3K9me2 and DNA methylation, gaining H3K27me3 during migration.

Conclusions:

Germline specification is a genetic system that reprograms the epigenome towards totipotency.
Reacquisition of totipotency factors and sustained Blimp1 expression prevent dedifferentiation or somatic fate.