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Updated: Dec 27, 2025
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Quantitative PCR-based Assay to Measure Sonic Hedgehog Signaling in Cellular Model of Ciliogenesis
Published on: January 31, 2025
940
Hedgehog Signaling Modulates Glial Proteostasis and Lifespan
Andrew Rallis1, Juan A Navarro2, Mathias Rass2
1Université Côte d'Azur, CNRS, INSERM, iBV, Nice, France.
Cell Reports
|February 27, 2020
Summary
Hedgehog signaling protects flies by maintaining protein balance in glial cells, extending lifespan and improving fitness. This pathway is crucial for adult health and combating age-related decline.
Area of Science:
- Neurobiology
- Developmental Biology
- Aging Research
Background:
- The Hedgehog signaling pathway is vital in embryonic development.
- Its role in adult organisms, particularly in maintaining cellular health, is not well understood.
Purpose of the Study:
- To investigate the activity and function of the Hedgehog signaling pathway in adult Drosophila melanogaster.
- To determine the role of Hedgehog signaling in glial cells and its impact on lifespan and proteostasis.
Main Methods:
- Adult-specific gene manipulation to alter Hedgehog pathway activity in Drosophila.
- Assessment of lifespan, locomotor activity, and dopaminergic neuron integrity.
- Analysis of chaperone regulation and proteostasis in glial cells.
- Utilizing a Drosophila Alzheimer's disease model.
Main Results:
- Depletion of Hedgehog signaling in adult flies reduced lifespan and impaired neuronal function.
- Hedgehog pathway activation in glial cells extended lifespan and improved overall fitness.
- Overexpression of downstream chaperones in glia rescued lifespan and proteostasis defects in hedgehog mutants.
- Hedgehog signaling demonstrated protective effects in a Drosophila model of Alzheimer's disease.
Conclusions:
- Hedgehog signaling is active and plays a critical protective role in adult Drosophila, particularly in glial cells.
- This pathway is essential for maintaining proteostasis and determining lifespan.
- Hedgehog signaling offers a potential therapeutic target for age-related neurodegenerative diseases.
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