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Elongator regulates the melanocortin satiety pathway
Joseph Walters1, Cody Walters2, BreAnna Cameron3
1Department of Biological and Physical Sciences, Montana State University Billings, Billings, MT, 59101, USA; Pacific Northwest University of Health Sciences, Yakima, WA, 98901, USA.
Biochemical and Biophysical Research Communications
|May 10, 2022
Summary
The Elongator complex component 1 (Elp1) is crucial for regulating appetite. Loss of Elp1 in specific pituitary cells leads to obesity and altered satiety signaling.
Area of Science:
- Endocrinology
- Neuroscience
- Molecular Biology
Background:
- The Elongator complex is involved in gene regulation.
- The pituitary gland plays a key role in hormonal control and metabolism.
- The melanocortin pathway regulates satiety and energy balance.
Purpose of the Study:
- To investigate the role of Elp1 (Elongator complex component 1) in pituitary gland function.
- To determine Elp1's specific contribution to the melanocortin satiety pathway.
Main Methods:
- Generated conditional knockout mouse models for Elp1 deletion in specific pituitary cell types (somatotropes and Pomc-expressing cells).
- Analyzed effects on murine growth, development, α-MSH levels, feeding behavior, and body weight.
Main Results:
- Selective Elp1 deletion in somatotropes did not significantly affect growth or development.
- Loss of Elp1 in Pomc-expressing cells led to significantly reduced α-MSH levels.
- Elp1 deficiency in Pomc cells resulted in hyperphagia and obesity.
Conclusions:
- Elongator complex component 1 (Elp1) is essential for regulating the melanocortin satiety pathway.
- Elp1 plays a critical role in controlling appetite and energy homeostasis via Pomc neurons.
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