相关实验视频
Updated: Jun 17, 2025

11:27
Analysis of SCAP N-glycosylation and Trafficking in Human Cells
Published on: November 8, 2016
8.7K
核受体核心压力器NCOR1和SMRT通过肠道调节碳水化合物运输来调节新陈代谢
Megan J Ritter1,2, Izuki Amano1,2,3, Anne H van der Spek2,4
1Department of Medicine, Section of Endocrinology, Diabetes, Nutrition and Weight Management, Boston University Chobanian and Avedisian School of Medicine, Boston, MA 02118, USA.
Endocrinology
|August 6, 2024
概括
核受体核心压缩器1 (NCOR1) 和SMRT调节新陈代谢. 在肠道细胞中破坏NCOR1和SMRT会导致体重减轻和低血糖症,突出显示它们在代谢平衡中的作用.
科学领域:
- 代谢健康和疾病
- 核受体调节 核受体调节
- 肠上皮细胞生物学 肠上皮细胞生物学
背景情况:
- 核受体核心压缩剂1 (NCOR1) 和视网膜酸和甲状腺激素受体 (SMRT) 的沉默介质是代谢途径的关键调节者.
- 以前的研究表明,NCOR1和SMRT对于代谢平衡至关重要,它们的缺失导致致命的体重减轻和低血糖症.
- NCOR1和SMRT在肠上皮细胞 (IEC) 中关于葡萄糖吸收和代谢调节的特定作用仍未得到充分研究.
研究的目的:
- 研究NCOR1和SMRT在肠上皮细胞 (IECs) 中在调节代谢平衡中的特定功能.
- 确定破坏IEC中的NCOR1和SMRT对体重,葡萄糖代谢和生存的影响.
主要方法:
- 在成年小鼠肠上皮细胞 (IECs) 中,NCOR1和SMRT的产后干扰.
- 综合性代谢表型,包括身体成分分析和葡萄糖耐受性测试.
- 结核IECs的散装RNA测序以描述基因表达变化.
主要成果:
- 在IEC中NCOR1和SMRT的产后淘汰导致体重快速减轻,低血糖症和生存率降低.
- 代谢分析显示,在没有改变食物摄入量的情况下,身体脂肪的损失,以及在IEC中改变的葡萄糖代谢和活性脂肪酸氧化.
- 关键的肠道碳水化合物载体 (SGLT1,GLUT2,GLUT5) 在淘汰赛小鼠中显著减少.
结论:
- 肠道NCOR1和SMRT协同作用,维持新陈代谢平衡,调节体重和葡萄糖水平.
- 观察到的代谢功能障碍部分是由NCOR1和SMRT调节肠道碳水化合物载体的调节.
- 这些发现强调了IEC特定的NCOR1和SMRT在整体代谢健康中的关键作用.
更多相关视频
相关概念视频
Transcellular Transport of Solutes
3.5K
Transcellular transport of solutes is the movement of substances like monosaccharides and amino acids through polarized cells. This transport mechanism is primarily seen in epithelial and endothelial cells aided by membrane transport proteins such as channels and transporters. The tight junctions between these cells confine the membrane proteins to the two sides of the cell. The epithelial cells have distinct apical and basolateral domains. In contrast, the endothelial cells show the luminal...
3.5K
Glucose Absorption Into the Small Intestine
31.5K
Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form such as glucose or galactose. These monosaccharides are then transported across the intestinal membrane and into the blood via transcellular transport. The intestinal epithelial cells allow the movement of these monosaccharides with a defined 'entry' through membrane transporter proteins present on their apical membrane and...
31.5K
Carbohydrate Absorption
610
Carbohydrates are essential macronutrients that serve as the body's primary energy source. Their digestion begins in the mouth, where salivary amylase partially breaks down complex carbohydrates such as starch into smaller oligosaccharides. This mechanical and enzymatic activity prepares carbohydrates for further processing in the gastrointestinal tract.
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
610
Regulation of Metabolism
9.3K
Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
9.3K
Carrier-Mediated Transport
318
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
318
Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K

