ORMDL3の発現を調節する遺伝的変異は,小児性喘息のリスクに貢献します
Miriam F Moffatt1, Michael Kabesch, Liming Liang
1National Heart and Lung Institute, Imperial College, London SW3 6LY, UK.
Nature
|July 6, 2007
まとめ
遺伝的要因が子供の喘息に影響する. ゲノム全体の関連研究で,17q21染色体における単一ヌクレオチドポリモルフィズム (SNP) が,特にORMDL3遺伝子を調節することで,小児性喘息と強く関連していることが判明しました.
科学分野:
- 遺伝学 遺伝学とは
- 免疫学 免疫学とは
- 小児科は小児科です.
背景:
- 幼児期の喘息は,複雑な遺伝子と環境の相互作用から生じます.
- 喘息の感受性の遺伝的基盤は,まだ完全に理解されていません.
- 全ゲノム関連性研究 (GWAS) は,遺伝的危険因子を特定する上で極めて重要です.
研究 の 目的:
- 幼児発症性喘息に対する単一核酸多形態 (SNPs) の影響を体系的にマッピングする.
- 喘息リスクに関連した特定の遺伝的位置を特定する.
- 遺伝子変異と遺伝子発現レベルとの関係を調査する.
主な方法:
- ゲノム・ワイド・アソシエーション・スタディ (GWAS) は,31万7,000以上のSNPを分析した.
- 994人の喘息患者と1,243人の対照群を含む家族ベースおよび症例参照パネルを使用しました.
- ドイツと英国の出生コホート集団における独立した複製研究.
- エプスタイン・バーウイルス (EBV) 変形リンフォブラスト型細胞系における遺伝子発現レベルを評価.
主要な成果:
- 17q21染色体マーカーと小児性喘息の強い再現可能な関連性を特定した (P < 10 12).
- 複製の研究は,独立したコホート (P = 0.0003とP = 0.0005) で17q21ロカス関連性を確認しました.
- 17q21のSNPは,Endoplasmic reticulumのトランスメブランタンパク質をコードする遺伝子であるORMDL3 (P <10(-22) のトランスクリプトレベルと有意に関連していました.
結論:
- ORMDL3発現を調節する遺伝子変異は,子供の喘息感受性の重要な決定因子です.
- 17q21の位置は,小児性喘息の重要な遺伝的リスク因子です.
- この研究は,遺伝的多様性,遺伝子発現,および喘息の病原性との間の分子的リンクを提供します.
関連する概念動画
Asthma I: Introduction
Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
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...
Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
Asthma-II: Pathophysiology and Classification
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Asthma III: Clinical Manifestations
Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
Asthma-I: Introduction
Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...


