Muscle function and homeostasis require macrophage-derived cytokine inhibition of AKT activity in Drosophila
Muscle function and homeostasis require macrophage-derived cytokine inhibition of AKT activity in Drosophila
复制标题
果蝇的肌肉功能和体内平衡需要巨噬细胞衍生的细胞因子抑制 AKT 活性
DOI:
10.1101/763557
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Kierdorf K
中科院分区:
文献类型:
--
作者:
Kierdorf K
Unpairedligands are secreted signals that act via a GP130-like receptor,domeless, to activate JAK-STAT signaling inDrosophila. Like many mammalian cytokines,unpairedscan be activated by infection and other stresses and can promote insulin resistance in target tissues. However, the importance of this effect in non-inflammatory physiology is unknown. Here, we identify a requirement forunpaired-JAK signaling as a metabolic regulator in healthy adultDrosophilamuscle. Adult muscles show basal JAK-STAT signaling activity in the absence of any immune challenge. Macrophages are the source of much of this tonic signal. Loss of thedomereceptor on adult muscles significantly reduces lifespan and causes local and systemic metabolic pathology. These pathologies result from hyperactivation of AKT and consequent deregulation of metabolism. Thus, we identify a cytokine signal from macrophages to muscle that controls AKT activity and metabolic homeostasis.
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