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Related Concept Videos

Epigenetic Regulation01:37

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.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Natural Selection and Adaptation01:15

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
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Cell Signaling Feedback Loops

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Procedure for Adaptive Laboratory Evolution of Microorganisms Using a Chemostat
06:03

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Published on: September 20, 2016

Epigenetic feedback regulation accelerates adaptation and evolution.

Chikara Furusawa1, Kunihiko Kaneko

  • 1Quantitative Biology Center-QBiC, RIKEN, Suita, Osaka, Japan. chikara.furusawa@riken.jp

Plos One
|May 14, 2013
PubMed
Summary
This summary is machine-generated.

Epigenetic feedback regulation enhances cellular adaptation and evolution. This gene regulatory network model shows how epigenetic dynamics improve fitness by increasing cellular plasticity and enabling faster responses to environmental changes.

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Area of Science:

  • Systems Biology
  • Evolutionary Biology
  • Molecular Biology

Background:

  • Gene regulatory networks (GRNs) govern cellular functions.
  • Epigenetic mechanisms influence gene expression without altering DNA sequence.
  • Understanding epigenetic dynamics is crucial for adaptation and evolution.

Purpose of the Study:

  • To investigate the impact of epigenetic feedback regulation on cellular adaptation and evolution.
  • To model how epigenetic dynamics affect a gene regulatory network's response to environmental changes.

Main Methods:

  • Development of a simple cell model incorporating a gene regulatory network.
  • Inclusion of epigenetic feedback regulation within the model.
  • Analysis of noise-driven selection and evolutionary development.

Main Results:

  • Epigenetic dynamics enable adaptation to novel environmental conditions via noise-driven selection of high-growth states.
  • Epigenetic regulation promotes faster and more precise evolutionary responses in GRNs.
  • Increased cellular plasticity is observed during adaptation and evolution.

Conclusions:

  • Epigenetic feedback regulation significantly enhances cellular fitness.
  • Epigenetic mechanisms are vital for adaptive and evolutionary processes in biological systems.
  • This study highlights the role of epigenetics in increasing cellular plasticity and responsiveness.