相关实验视频
Updated: Jul 1, 2025

10:41
Identifying Amino Acid Overproducers Using Rare-Codon-Rich Markers
Published on: June 24, 2019
8.3K
蓝菌 (Blautia Coccoides) 是一种新发现的细菌,由白缺乏增加,在改善代谢障碍方面具有新功能
Yuguo Niu1, Xiaoming Hu1, Yali Song2
1Zhongshan Hospital, State Key Laboratory of Medical Neurobiology, Institute for Translational Brain Research, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, 200032, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 2, 2024
概括
氨酸缺乏通过改变肠道细菌来改善代谢健康. 补充B. coccoides可以提高胰岛素敏感性,减少体脂,为代谢综合征提供新的治疗点.
科学领域:
- 微生物学 微生物学
- 代谢疾病 代谢疾病
- 肠道微生物组研究研究
背景情况:
- 肠道微生物群的组成越来越多地与人类代谢疾病有关.
- 以前的研究表明,氨酸缺乏改善了代谢功能障碍,但具体的细菌机制是未知的.
研究的目的:
- 为了调查氨酸缺乏是否会改变对代谢改善负责的特定肠道细菌.
- 确定这些细菌在调解代谢健康中的作用.
主要方法:
- 在没有白素的小鼠中分析肠道微生物群组成.
- 在高脂肪饮食 (HFD) 中使用B. coccoides和gnotobiotic小鼠的Gavage研究.
- 测量胰岛素敏感性和身体脂肪.
- 对托芬代谢物和烯碳化合物受体 (AhR) 激活的代谢分析.
主要成果:
- 氨酸缺乏会显著改变肠道微生物群的组成,这对于代谢的好处至关重要.
- 在没有白素的小鼠中,B. coccoides的丰富度增加,在HFD小鼠中改善胰岛素敏感性和减少体脂.
- B. coccoides 将酸代谢成英多尔-3-酸 (I3AA),激活肝脏中的酸碳素受体 (AhR),从而改善代谢参数.
- 减少便B. coccoides和I3AA水平与临床代谢综合征相关.
结论:
- B. coccoides 是一个关键的细菌,受到白素缺乏的影响,可以改善代谢障碍.
- 该机制涉及托代谢到I3AA,激活AhR信号传输.
- 向B. coccoides及其代谢产物是代谢综合征的潜在治疗策略.
更多相关视频
相关概念视频
Protein Import into the Peroxisomes
3.5K
Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
3.5K
Inborn Errors of Metabolism
158
Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
158
Lysosomal Hydrolases
3.8K
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
3.8K
Overview of Protein Metabolism
1.2K
Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
1.2K
Pleiotropy
40.4K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.4K
Overview of Metabolism
30.1K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
30.1K

