Epigenetics

Heritable changes in gene expression without DNA-sequence change — chromatin states, methylation, and histone code.


field tier

Epigenetics sits within molecular biology and addresses heritable changes in gene expression without dna-sequence change — chromatin states, methylation, and histone code. The page below sketches the conceptual scope of the area, the methodological tools it relies on, and the recent literature anchoring its current frontier.

The area organises around a small number of recurring axes: scope (what biological scales the work spans), method (the dominant experimental or computational tools), data regime (what kinds of measurements are now routine vs. still frontier), and open questions (what the field cannot yet do reliably). The sources below cover different combinations of these axes.

Frontier results

A primary recent reference for this area is Integrative analysis of 111 reference human epigenomes (Roadmap, 2015), which contributes to the methodological or empirical conversation that defines the current frontier of epigenetics. It illustrates the kind of question the field is actively pursuing — the specific technical claim, the dataset or system on which it was validated, and the way subsequent work builds on it.

A primary recent reference for this area is An integrated encyclopedia of DNA elements in the human genome (Encode, 2012), which contributes to the methodological or empirical conversation that defines the current frontier of epigenetics. It illustrates the kind of question the field is actively pursuing — the specific technical claim, the dataset or system on which it was validated, and the way subsequent work builds on it.

Open questions

Open questions in epigenetics cluster around scaling current methods to larger systems, integrating measurements across modalities, and producing predictive rather than descriptive models. The references above mark the work that the next iteration of this page should engage with in more specific detail.

Prerequisites

Sources

In context

Where this topic sits in the prerequisite graph. Click any node to jump.

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Explore

  1. 01

    DNA Methylation

    Cytosine methylation patterns, DNMTs, TETs, and methylome landscapes.

  2. 02

    Histone Modifications

    Acetylation, methylation, ubiquitination of histones and the writers, erasers, and readers that interpret them.

  3. 03

    Chromatin Architecture and 3D Genome

    Nucleosome positioning, TADs, A/B compartments, loops, and Hi-C-derived structure.


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