Fat- and Sugar-induced Signals Regulate Sweet and Fat Taste Perception in Drosophila

Overview

Journal Cell Rep

Publisher Cell Press

Specialties Biology
Cell Biology
Molecular Biology

Date 2023 Nov 7

PMID 37934669

Authors

Yunpo Zhao

Emilia Johansson

Jianli Duan

Zhe Han

Mattias Alenius

Affiliations

Soon will be listed here.

Abstract

In this study, we investigate the interplay between taste perception and macronutrients. While sugar's and protein's self-regulation of taste perception is known, the role of fat remains unclear. We reveal that in Drosophila, fat overconsumption reduces fatty acid taste in favor of sweet perception. Conversely, sugar intake increases fatty acid perception and suppresses sweet taste. Genetic investigations show that the sugar signal, gut-secreted Hedgehog, suppresses sugar taste and enhances fatty acid perception. Fat overconsumption induces unpaired 2 (Upd2) secretion from adipose tissue to the hemolymph. We reveal taste neurons take up Upd2, which triggers Domeless suppression of fatty acid perception. We further show that the downstream JAK/STAT signaling enhances sweet perception and, via Socs36E, fine-tunes Domeless activity and the fatty acid taste perception. Together, our results show that sugar regulates Hedgehog signaling and fat induces Upd2 signaling to balance nutrient intake and to regulate sweet and fat taste perception.

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