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Nutrient signaling and developmental timing of maturation
E Thomas Danielsen1, Morten E Moeller, Kim F Rewitz
1Department of Biology, Cell and Neurobiology, University of Copenhagen, Copenhagen, Denmark.
Current Topics in Developmental Biology
|August 22, 2013
Summary
Animal development timing is controlled by nutrition and growth. Insulin-like growth factors (IGFs) in Drosophila link nutrient availability to maturation, influencing puberty onset and potentially offering insights into diet-related diseases.
Area of Science:
- Developmental biology
- Endocrinology
- Nutritional science
Background:
- Sexual maturation timing in animals is intrinsically linked to nutritional status and growth.
- Animals adapt juvenile development duration based on nutrient availability, extending it during scarcity and accelerating it with abundance.
- Nutrient-dependent growth regulators interface with the endocrine system to control maturation timing.
Purpose of the Study:
- To provide an overview of the system regulating developmental timing of maturation in Drosophila.
- To review recent advancements in understanding the coupling between nutrition, growth, and maturation timing.
- To explore the role of specific dietary components in modulating developmental timing.
Main Methods:
- Utilizing Drosophila melanogaster as a model organism to study developmental timing.
- Investigating the role of secreted signal molecules similar to insulin-like growth factors (IGFs).
- Analyzing the impact of different dietary components (protein, fat, sugar) on growth and maturation.
Main Results:
- Secreted signal molecules resembling IGFs act as crucial checkpoints in the endocrine control of maturation.
- Protein content in the diet has the most significant impact on maturation timing, followed by fat and sugar.
- Excess dietary sugar negatively affects growth and delays maturation, mimicking diabetic conditions.
Conclusions:
- Nutrient availability and specific dietary components, particularly protein and sugar, play a critical role in regulating developmental timing of sexual maturation.
- The Drosophila system provides a paradigm for understanding the complex interplay between diet, obesity, diabetes, and the onset of puberty.
- Further research into these nutrient-endocrine-developmental links can illuminate human health conditions related to diet and metabolic disorders.
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