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An intestinal zinc sensor regulates food intake and developmental growth 期刊论文
NATURE, 2020, 580 (7802) : 263-+
作者:  Wu, Thomas D.;  39;Gorman, William E.
收藏  |  浏览/下载:31/0  |  提交时间:2020/07/03

Hodor, an intestinal zinc-gated chloride channel, controls systemic growth in Drosophila by promoting food intake and by modulating Tor signalling and lysosomal homeostasis within enterocytes.


In cells, organs and whole organisms, nutrient sensing is key to maintaining homeostasis and adapting to a fluctuating environment(1). In many animals, nutrient sensors are found within the enteroendocrine cells of the digestive system  however, less is known about nutrient sensing in their cellular siblings, the absorptive enterocytes(1). Here we use a genetic screen in Drosophila melanogaster to identify Hodor, an ionotropic receptor in enterocytes that sustains larval development, particularly in nutrient-scarce conditions. Experiments in Xenopus oocytes and flies indicate that Hodor is a pH-sensitive, zinc-gated chloride channel that mediates a previously unrecognized dietary preference for zinc. Hodor controls systemic growth from a subset of enterocytes-interstitial cells-by promoting food intake and insulin/IGF signalling. Although Hodor sustains gut luminal acidity and restrains microbial loads, its effect on systemic growth results from the modulation of Tor signalling and lysosomal homeostasis within interstitial cells. Hodor-like genes are insect-specific, and may represent targets for the control of disease vectors. Indeed, CRISPR-Cas9 genome editing revealed that the single hodor orthologue in Anopheles gambiae is an essential gene. Our findings highlight the need to consider the instructive contributions of metals-and, more generally, micronutrients-to energy homeostasis.


  
Linking life-history theory and metabolic theory explains the offspring size-temperature relationship 期刊论文
ECOLOGY LETTERS, 2019, 22 (3) : 518-526
作者:  Pettersen, Amanda K.;  White, Craig R.;  Bryson-Richardson, Robert J.;  Marshall, Dustin J.
收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
Development  egg size  embryo size  incubation  larval size  maternal investment  metabolism  
Ocean warming has a greater effect than acidification on the early life history development and swimming performance of a large circumglobal pelagic fish 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (9) : 4368-4385
作者:  Watson, Sue-Ann;  Allan, Bridie J. M.;  McQueen, David E.;  Nicol, Simon;  Parsons, Darren M.;  Pether, Stephen M. J.;  Pope, Stephen;  Setiawan, Alvin N.;  Smith, Neville;  Wilson, Carly;  Munday, Philip L.
收藏  |  浏览/下载:24/0  |  提交时间:2019/04/09
carbon dioxide  critical swimming speed  early life history  larval development  morphology  Seriola lalandi  temperature  yellowtail kingfish