The preference for sugar over sweetener depends on a gut sensor cell.

The preference for sugar over sweetener depends on a gut sensor cell.
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DOI:
10.1038/s41593-021-00982-7
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发表时间:
2022-03
影响因子:
25
通讯作者:
Bohórquez DV
Bohórquez DV
中科院分区:
医学1区
文献类型:
--
作者:
Buchanan KL;Rupprecht LE;Kaelberer MM;Sahasrabudhe A;Klein ME;Villalobos JA;Liu WW;Yang A;Gelman J;Park S;Anikeeva P;Bohórquez DV

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在肠道感官提示的引导下,人类和动物更喜欢营养糖而不是非卡路里甜味剂,但肠道如何引导这种偏好仍不清楚。在肠道中,神经足细胞与迷走神经细胞突触,在几秒钟内将糖刺激传送到大脑。在这里,我们发现CCK标记的十二指肠神经足细胞分化,并利用甜味受体和钠葡萄糖转运蛋白将来自甜味剂和糖类的腔刺激传导到迷走神经。这两种刺激类型引发了不同的神经通路:甜味剂刺激嘌呤能神经传递,糖刺激谷氨酸能神经传递。为了探索这些细胞对行为的贡献,我们通过设计一种灵活的光纤来开发肠腔的光遗传学。我们发现,小鼠对糖而不是甜味剂的偏好依赖于神经足细胞谷氨酸能信号。通过快速识别营养刺激的准确身份,肠道神经足细胞充当指导营养选择的切入点。布坎南、鲁普雷希特、凯尔贝勒和他的同事表明,小鼠对糖的偏好高于甜味剂,这取决于肠道神经足细胞。与其他传感器细胞类似,神经足细胞迅速传达刺激的准确身份,以驱动食物选择。
Guided by gut sensory cues, humans and animals prefer nutritive sugars over non-caloric sweeteners, but how the gut steers such preferences remains unknown. In the intestine, neuropod cells synapse with vagal neurons to convey sugar stimuli to the brain within seconds. Here, we found that cholecystokinin (CCK)-labeled duodenal neuropod cells differentiate and transduce luminal stimuli from sweeteners and sugars to the vagus nerve using sweet taste receptors and sodium glucose transporters. The two stimulus types elicited distinct neural pathways: while sweetener stimulated purinergic neurotransmission, sugar stimulated glutamatergic neurotransmission. To probe the contribution of these cells to behavior, we developed optogenetics for the gut lumen by engineering a flexible fiberoptic. We showed that preference for sugar over sweetener in mice depends on neuropod cell glutamatergic signaling. By swiftly discerning the precise identity of nutrient stimuli, gut neuropod cells serve as the entry point to guide nutritive choices. Buchanan, Rupprecht, Kaelberer and colleagues show that the preference for sugar over sweetener in mice depends on gut neuropod cells. Akin to other sensor cells, neuropod cells swiftly communicate the precise identity of stimuli to drive food choices.
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