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Cell Signaling Feedback Loops

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Positive and negative feedback loops are crucial for regulating biological signaling systems. These feedback loops are processes that connect output signals to their inputs.
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Endocrine Signaling

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Endocrine Signaling

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Chemical Signaling in the Endocrine System

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Related Experiment Video

Updated: May 15, 2026

A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis

A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis

Published on: March 19, 2021

FOXOs: signalling integrators for homeostasis maintenance.

Astrid Eijkelenboom¹, Boudewijn M T Burgering

¹Molecular Cancer Research, Division Biomedical Genetics, University Medical Center Utrecht, Stratenum, Universiteitsweg 100, 3584CG Utrecht, The Netherlands.

Nature Reviews. Molecular Cell Biology

|January 18, 2013

Summary

Forkhead box O (FOXO) transcription factors regulate crucial cellular processes, impacting aging and diseases like cancer and diabetes. Their complex regulation maintains tissue homeostasis and responds to environmental stresses.

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Spatiotemporal Control of Protein Activity through Optogenetic Allosteric Regulation

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Published on: October 4, 2024

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Last Updated: May 15, 2026

A Microfluidics Approach for the Functional Investigation of Signaling Oscillations Governing Somitogenesis

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Published on: March 19, 2021

Spatiotemporal Control of Protein Activity through Optogenetic Allosteric Regulation

Spatiotemporal Control of Protein Activity through Optogenetic Allosteric Regulation

Published on: October 4, 2024

Area of Science:

Molecular Biology
Cellular Biology
Genetics

Background:

Forkhead box O (FOXO) transcription factors are key regulators of cellular processes.
FOXO activity influences cell cycle, apoptosis, metabolism, stem cell maintenance, and lifespan.
Dysregulated FOXO activity is implicated in age-related diseases, including cancer and diabetes.

Purpose of the Study:

To elucidate the regulatory mechanisms and functional significance of FOXO transcription factors.
To understand how FOXOs maintain tissue homeostasis and respond to environmental stressors.

Main Methods:

Analysis of upstream regulatory pathways impacting FOXO activity.
Investigation of post-translational modifications and nuclear-cytoplasmic shuttling of FOXO and its regulators.
Examination of FOXO downstream effects in model organisms.

Main Results:

FOXO activity is modulated by diverse upstream pathways.
Post-translational modifications and shuttling are critical for FOXO regulation.
FOXO factors coordinate responses to growth factor deprivation, metabolic, and oxidative stress.

Conclusions:

FOXO transcription factors act as crucial homeostasis regulators.
They maintain tissue stability over time and orchestrate cellular defense mechanisms.
Understanding FOXO pathways is vital for addressing aging and related diseases.