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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:14/0  |  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.


  
Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain 期刊论文
ATMOSPHERIC RESEARCH, 2020, 231
作者:  Luo, Yuanyuan;  Zhou, Xuehua;  Zhang, Jingzhu;  Xue, Likun;  Chen, Tianshu;  Zheng, Penggang;  Sun, Jingjing;  Yan, Xiaolong;  Han, Guangxuan;  Wang, Wenxing
收藏  |  浏览/下载:9/0  |  提交时间:2020/07/02
WSOC  ALW  Acidity  Light absorption  PSCF  
The Acidity Distribution of Drops in a Deep Convective Cloud 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (1) : 424-440
作者:  Hu, J. Y.;  Yin, Y.;  Chen, Q.
收藏  |  浏览/下载:4/0  |  提交时间:2019/04/09
drop acidity distribution  convective cloud  microphysics processes  aerosols  aqueous oxidation  
Aerosols in atmospheric chemistry and biogeochemical cycles of nutrients 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2018, 13 (6)
作者:  Kanakidou, Maria;  Myriokefalitakis, Stelios;  Tsigaridis, Kostas
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
multiphase chemistry  atmospheric acidity  biogeochemical cycles of N, P, Fe, dust, organics  
Spatial and temporal characteristics of PM2.5 acidity during autumn in marine and coastal area of Bohai Sea, China, based on two-site contrast 期刊论文
ATMOSPHERIC RESEARCH, 2018, 202: 196-204
作者:  Zhou, Ming;  Zhang, Yufen;  Han, Yan;  Wu, Jianhui;  Du, Xiang;  Xu, Hong;  Feng, Yinchang;  Han, Suqin
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
Acidity  PM2.5  Spatial and temporal variation  Marine  Coast  Nitrate formation  
Ion balance and acidity of size-segregated particles during haze episodes in urban Beijing 期刊论文
ATMOSPHERIC RESEARCH, 2018, 201: 159-167
作者:  Tian, Shili;  Pan, Yuepeng;  Wang, Yuesi
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
Ion balance  Acidity  Size distribution  Haze  
Aluminum is more tightly bound in soil after wollastonite treatment to a forest watershed 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 397
作者:  Gu, Weiyao;  Driscoll, Charles T.;  Shao, Shuai;  Johnson, Chris E.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
Cation exchange  Forest health  Organically bound aluminum  Soil acidity  Watershed  Wollastonite