带有不完整的PM的甲状腺和周围膜 (PM) 蛋白质沿着甲状腺不完整的甲状腺和它们的补充功能甲状腺和周围膜 (PM) 蛋白质的组织化学和转录学
Samira P Ibrahim1, Renata O Dias2, Clelia Ferreira3
1Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, 88040-900, Brazil.
Insect biochemistry and molecular biology
|October 13, 2023
概括
昆虫的中肠含有沿整个消化道的粘液 (Mf-mucins),而不仅仅是腹膜 (PM) 的后部区域. 这种粘液很可能形成缩凝,保护组织并帮助消化.
科学领域:
- 昆虫生理学 昆虫生理学
- 胃肠道生物学 胃肠道生物学
- 分子昆虫学分子昆虫学
背景情况:
- 昆虫的中肠可能有缺少围性膜 (PM) 的区域,被围性凝覆盖.
- 这种围凝的组成和功能仍然不完全理解.
研究的目的:
- 为了测试这种假设,即围凝是一种类似于脊椎动物的粘液.
- 在昆虫中肠中,描述参与粘液和PM形成的基因的表达.
主要方法:
- 组织化学分析以识别整个中肠的粘膜.
- RNA测序 (RNA-seq) 用于分析中肠和尸体中形成粘液的粘膜蛋白 (Mf-mucins),桃体蛋白,基因合成酶和基因脱甲基酶的基因表达.
主要成果:
- 沿整个中肠确定了菌素,与后部特定的PM不同.
- Mf-mucins在整个中肠表达,可能形成一个细胞外粘液层.
- 围性膜 (PM) 蛋白和相关酶 (氨酸合成酶,氨酸脱乙酶) 主要在后部中肠表达,与PM局部一致.
结论:
- 周周凝很可能由Mf-mucins组成,在缺乏PM的前肠和中肠区域提供组织保护.
- 后部局部的PM及其相关酶对消化效率和酶循环有功能.
- 建议粘液和PM之间的功能相互作用为最佳的昆虫中肠功能提供.
更多相关视频
相关概念视频
Osmoregulation in Insects
16.2K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
16.2K
Mucosal Barrier of the Stomach
685
The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
685


