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Leptin receptor overlapping transcript (LepROT) gene participates in insulin pathway through FoxO
1College of Life Sciences, Yuncheng University, 1155 Fudan West Street, Yuncheng 044000, Shanxi, China.
Gene
|April 24, 2016
Summary
Leptin receptor overlapping transcript (LepROT) maintains FoxO transcription, crucial for insect development. Its disruption impacts insulin signaling pathways, affecting larval growth.
Area of Science:
- Molecular Biology
- Insect Physiology
- Biochemistry
Background:
- Leptin receptor overlapping transcript (LepROT) is co-transcribed with the leptin receptor (LepR).
- The precise function of LepROT within the insulin signaling pathway remains largely uncharacterized.
- Understanding LepROT's role is critical for elucidating developmental regulation in insects.
Purpose of the Study:
- To investigate the function of LepROT in maintaining FoxO transcription.
- To elucidate the mechanism by which LepROT influences the insulin signaling pathway.
- To determine the impact of LepROT on insect development.
Main Methods:
- Knockdown of LepROT using double-stranded RNA (dsRNA) injection in Helicoverpa armigera larvae.
- Analysis of FoxO and PI3K expression levels following LepROT knockdown.
- Observation of FoxO subcellular localization (cytoplasmic vs. nuclear).
- Overexpression of LepROT in the HaEpi cell line.
Main Results:
- LepROT is constitutively expressed and unaffected by common hormones or insulin.
- LepROT knockdown in larvae led to developmental delays.
- Knockdown resulted in increased FoxO transcription and decreased PI3K levels.
- FoxO translocated from the cytoplasm to the nucleus upon LepROT knockdown.
- Overexpression of LepROT inhibited FoxO expression in cell lines.
Conclusions:
- LepROT plays a significant role in regulating FoxO transcription.
- LepROT appears to be an integral component of the insulin signaling pathway.
- Modulation of LepROT affects insect development, likely through its influence on insulin signaling and FoxO activity.
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