肝臓の健康を守るための微生物由来のサキニル酸
Alessia Perino1, Hadrien Demagny1, Kristina Schoonjans1
1Laboratory of Metabolic Signaling, Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Cell
|May 24, 2024
まとめ
代謝機能障害に関連する肝疾患の進行を防ぎます. 保護効果は,通常の胆酸シグナル伝達経路を回避して,Akkermansia muciniphilaの成長を促進することから生じる.
科学分野:
- 微生物学
- ヘパトロジー
- 代謝 疾患
背景:
- 代謝機能障害に関連した肝疾患 (MASLD) は,世界的な健康上の懸念事項です.
- 胆汁酸 (BAs) は代謝と肝臓の健康に重要な役割を果たします.
- 腸内微生物群は 主体の代謝と疾患の進行に大きな影響を与えます
研究 の 目的:
- MASLDに対する微生物由来胆酸の保護作用を調査する.
- 3-スッキニル化ホリック酸 (3-SCA) の作用メカニズムを解明する.
- 3SCAと腸内微生物群と肝臓疾患の関係を調べるため
主な方法:
- MASLDのインビヴォとインビトロモデル
- 胆汁酸のプロファイルと腸内微生物の構成の分析
- 肝臓ヒストロジーと代謝マーカーの評価
主要な成果:
- 微生物由来胆酸である3 - スッキニル化ホリック酸は,MASLDの進行に対する有意な保護を示した.
- 3- SCAの保護メカニズムは,古典的な胆酸受容体シグナルから独立していた.
- 3 - SCA治療は,共生細菌のアッカーマンシア・ムチニフィラの有意な増加をもたらしました.
結論:
- 3-SCAのような微生物由来胆酸は,MASLDの有望な治療法です.
- 腸内微生物群,特にAkkermansia muciniphilaは,3 - SCAの保護効果の重要な媒介者である.
- 腸内微生物群をターゲットにすることで 代謝性肝疾患の管理に 新たな戦略が生まれます
関連する概念動画
Bile
6.2K
Bile is a crucial bodily fluid, characterized by its yellow-green color and alkaline nature. Produced in the liver, it is transported through the common hepatic duct into either the cystic duct, leading to the gallbladder, or directly into the common bile duct. The flow of bile is regulated by the sphincter of Oddi located at the entrance of the duodenum. When this sphincter is closed, bile is redirected to the gallbladder for storage and concentration.
Bile is released when dietary fats enter...
Bile is released when dietary fats enter...
6.2K
Liver Physiology
3.8K
The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
3.8K
Hepatic Drug Excretion: Enterohepatic Cycling
3.7K
Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
3.7K
Hepatic Drug Excretion: Influencing Factors
826
The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
826
Sulfur Assimilation
562
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
562
Biosynthesis of Lipids
968
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...
968


