関連する実験動画
Updated: Jun 11, 2026

08:40
Chronic Salmonella Infection Induced Intestinal Fibrosis
Published on: September 22, 2019
ウイルス+感受性遺伝子の相互作用が,クローン病の遺伝子Agg16L1の表型を腸内で決定する
Ken Cadwell1, Khushbu K Patel, Nicole S Maloney
1Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
Cell
|July 7, 2010
まとめ
クローン病の遺伝子変異と相互作用する特定のウイルス感染症は,マウスの腸内問題を引き起こす. これは,遺伝子変異体,ウイルス,腸内細菌が炎症性疾患のフェノタイプをどのように引き起こすかを強調しています.
科学分野:
- 胃腸内科 胃腸内科
- 免疫学 免疫学とは
- 微生物学 微生物学とは
背景:
- 炎症性疾患に対する一般的な遺伝的リスクアレルは,完全に理解されていません.
- これらのアレルを持つ個体のうち,疾患を発症する個体数はごくわずかです.
研究 の 目的:
- 遺伝的危険因子を携えた個体において,疾患の発症の基礎となる分子機構を調査する.
- 炎症性腸疾患の病原性におけるウイルス感受性遺伝子相互作用の役割を明らかにする.
主な方法:
- マウスの腸内病変の誘導は,特定のウイルス感染とクローン病の感受性遺伝子変異 (Atg16L1) を通じて行われます.
- パネス細胞機能,遺伝子発現パターン,およびデクストランナトリウム硫酸塩による損傷に対する反応の分析.
- 疾患発現におけるTNF-α,IFN-gamma,および共生細菌の役割の評価.
主要な成果:
- ウイルス感受性遺伝子の相互作用により,異常な粒子の包装が発生し,パネス細胞の遺伝子発現が変化しました.
- この相互作用により,化学的傷害によるクローン病に似た病理が生じました.
- 病理はTNF-αとIFN-gammaシグナル伝達に依存し,広範囲の抗生物質によって軽減されました.
結論:
- Atg16L1遺伝子変異と相互作用する特定のウイルス感染は,マウスのクローン病のような腸内病理を引き起こす可能性があります.
- 遺伝的に感受性の高い個体における炎症性疾患のフェノタイプは,ウイルス感染症,宿主遺伝,微生物群を含む環境要因の複雑な相互作用から生じることがあります.
- この発見は,遺伝的傾向,ウイルスのトリガー,および炎症性腸疾患の発症の間のメカニズム的な関連性を示しています.
関連する概念動画
Inflammatory Bowel Disease III: Crohn's Disease
Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
Pharmacogenetics of Drug Transporters: P-Glycoprotein and Solute Carrier Transporters
The pharmacogenetics of drug transporters is increasingly recognized as a critical factor influencing interindividual variability in drug absorption, distribution, and elimination. These membrane-bound proteins regulate drugs' movement across cellular barriers by actively pumping them out (efflux) or facilitating their uptake (influx). Among the major transporter families, ATP-binding cassette (ABC) and solute carrier (SLC) transporters play particularly prominent roles. Genetic polymorphisms...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
Cystic Fibrosis: Pathogenesis
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
