Trpγ、Piezo和DH44R2对果蝇摄食和排便的调控

IF 3.2 2区 农林科学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Sonali Puri, Dharmendra Kumar Nath, Youngseok Lee
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引用次数: 0

摘要

正常的胃肠运动,包括排便,对从昆虫到人类的各种物种的营养吸收、能量平衡和整体健康至关重要。胃肠道运动紊乱会导致便秘或严重的疾病。机械传感器,包括TRP通道和压电,已知在调节黑腹果蝇的肠道生理中起关键作用,但它们在排便中的确切作用尚不完全清楚。此外,DH44等神经肽与肠道调节有关。本研究利用基因突变体和RNAi技术探讨了Trpγ、利尿激素44受体2 (DH44R2)和Piezo在控制摄食量、肠道运动和排便中的作用。这些基因的突变体表现出排泄物数量和大小的增加,而Dh44和Dh44R1突变体的排泄物数量减少,但大小增加。共表达和抢救实验进一步证实了这些基因在相同肠道细胞中的关键作用。研究结果表明,局部肠道特异性机制是排便的主要驱动因素。结果强调了Trpγ、Piezo和DH44R2在调节肠道运动和排便中的协同作用。通过揭示这些机械感觉蛋白和细胞是如何协同工作的,这项研究可能为肠易激综合征(IBS)和先天性巨结肠病等人类胃肠道疾病提供见解,揭示排便背后复杂的调节网络。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Regulation of feeding and defecation in Drosophila by trpγ, piezo, and DH44R2

Regulation of feeding and defecation in Drosophila by trpγ, piezo, and DH44R2
Normal gastrointestinal (GI) motility, including defecation, is crucial for nutrient absorption, energy balance, and overall health in species ranging from insects to humans. Disruptions in GI motility can lead to conditions like constipation or severe diseases. Mechanosensors, including TRP channels and Piezo, are known to play key roles in regulating gut physiology in Drosophila melanogaster, but their precise involvement in defecation is not fully understood. Additionally, neuropeptides like DH44 have been implicated in gut regulation. This study explores the roles of Trpγ, Diuretic hormone 44 Receptor 2 (DH44R2), and Piezo in controlling feeding amount, gut motility, and defecation using genetic mutants and RNAi techniques. Mutants for these genes exhibited increased excreta production and size, whereas Dh44 and Dh44R1 mutants had a reduced number of excreta, but with increased size. Co-expression and rescue experiments further confirmed the critical roles of these genes in the same gut cells. The findings reveal that local gut-specific mechanisms are the primary drivers of defecation. The results highlight the collaboration between Trpγ, Piezo, and DH44R2 in regulating gut motility and defecation. By uncovering how these mechanosensory proteins and cells work together, this research may offer insights into human GI disorders like Irritable Bowel Syndrome (IBS) and Hirschsprung's disease, shedding light on the complex regulatory network underlying defecation.
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来源期刊
CiteScore
7.40
自引率
5.30%
发文量
105
审稿时长
40 days
期刊介绍: This international journal publishes original contributions and mini-reviews in the fields of insect biochemistry and insect molecular biology. Main areas of interest are neurochemistry, hormone and pheromone biochemistry, enzymes and metabolism, hormone action and gene regulation, gene characterization and structure, pharmacology, immunology and cell and tissue culture. Papers on the biochemistry and molecular biology of other groups of arthropods are published if of general interest to the readership. Technique papers will be considered for publication if they significantly advance the field of insect biochemistry and molecular biology in the opinion of the Editors and Editorial Board.
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