Neurofibromin regulates metabolic rate via neuronal mechanisms in Drosophila.

Neurofibromin regulates metabolic rate via neuronal mechanisms in Drosophila.
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DOI:
10.1038/s41467-021-24505-x
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发表时间:
2021-07-13
影响因子:
16.6
通讯作者:
Tomchik SM
Tomchik SM
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Botero V;Stanhope BA;Brown EB;Grenci EC;Boto T;Park SJ;King LB;Murphy KR;Colodner KJ;Walker JA;Keene AC;Ja WW;Tomchik SM

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Neurofibromatosis type 1 is a chronic multisystemic genetic disorder that results from loss of function in the neurofibromin protein. Neurofibromin may regulate metabolism, though the underlying mechanisms remain largely unknown. Here we show that neurofibromin regulates metabolic homeostasis in Drosophila via a discrete neuronal circuit. Loss of neurofibromin increases metabolic rate via a Ras GAP-related domain-dependent mechanism, increases feeding homeostatically, and alters lipid stores and turnover kinetics. The increase in metabolic rate is independent of locomotor activity, and maps to a sparse subset of neurons. Stimulating these neurons increases metabolic rate, linking their dynamic activity state to metabolism over short time scales. Our results indicate that neurofibromin regulates metabolic rate via neuronal mechanisms, suggest that cellular and systemic metabolic alterations may represent a pathophysiological mechanism in neurofibromatosis type 1, and provide a platform for investigating the cellular role of neurofibromin in metabolic homeostasis. Neurofibromatosis type 1 (NF1) is a genetic disorder caused by mutations in neurofibromin and associated with disruptions in physiology and behavior. Here the authors show that neurofibromin regulates metabolic homeostasis via a discrete brain circuit in a Drosophila model of NF1.
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