Central metabolic-sensing remotely controls nutrient –sensitive endocrine response in Drosophila via Sir2/Sirt1-upd2-IIS axis

Banerjee, Kushal K. ; Deshpande, Rujuta S. ; Koppula, Pranavi ; Ayyub, Champakali ; Kolthur-Seetharam, Ullas (2017) Central metabolic-sensing remotely controls nutrient –sensitive endocrine response in Drosophila via Sir2/Sirt1-upd2-IIS axis Journal of Experimental Biology, 220 (7). pp. 1187-1191. ISSN 0022-0949

Full text not available from this repository.

Official URL: http://doi.org/10.1242/jeb.150805

Related URL: http://dx.doi.org/10.1242/jeb.150805

Abstract

Endocrine signaling is central in coupling organismal nutrient status with maintenance of systemic metabolic homeostasis. While local nutrient sensing within the insulinogenic tissue is well studied, distant mechanisms that relay organismal nutrient status in controlling metabolic-endocrine signaling are less well understood. Here, we report a novel mechanism underlying the distant regulation of the metabolic endocrine response in Drosophila melanogaster We show that the communication between the fat body and insulin-producing cells (IPCs), important for the secretion of Drosophila insulin-like peptides (dILPs), is regulated by the master metabolic sensor Sir2/Sirt1. This communication involves a fat body-specific direct regulation of the JAK/STAT cytokine upd2 by Sir2/Sirt1. We have also uncovered the importance of this regulation in coupling nutrient inputs with dILP secretion, and distantly controlling insulin/IGF signaling (IIS) in the intestine. Our results provide fundamental mechanistic insights into the top-down control involving tissues that play key roles in metabolic sensing, endocrine signaling and nutrient uptake.

Item Type:Article
Source:Copyright of this article belongs to The Company of Biologists.
Keywords:Metabolic Homeostasis; NAD+ Sensor; JAK/STAT Ligand; Insulin Secretion; Metabolism; Nutrient Sensing; DILP Secretion; Insulin Signaling; Intestine.
ID Code:118210
Deposited On:19 May 2021 07:21
Last Modified:19 May 2021 07:21

Repository Staff Only: item control page