RAB11FIP5の発現と自然殺人細胞の機能の変化は,HIVの広範な中和抗体反応の誘導と関連しています
Todd Bradley1, Dimitra Peppa2, Isabela Pedroza-Pacheco2
1Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA; Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA.
Cell
|October 2, 2018
まとめ
研究者らは,自然キラー (NK) 細胞とRab11の循環内体輸送が,HIV-1の広範な中和抗体 (bnAbs) の発現に作用することを発見した. この発見は 効果的なHIVワクチンの設計に 極めて重要です
科学分野:
- 免疫学
- ウイルス学
- 分子生物学
背景:
- HIV-1の広範な中和性抗体 (bnAbs) はウイルス感染を制御するために不可欠ですが,ワクチン接種によって誘発することは困難です.
- 感染した個体で自然にbnAbsを生成する宿主メカニズムを理解することは,効果的なHIVワクチンの開発に不可欠です.
研究 の 目的:
- HIV-1 bnAbsを感染した個体で自然に誘導する分子メカニズムを調査する.
- 潜在的ワクチン開発のためのbnAb生産に関連する宿主因子を特定する.
主な方法:
- bnAbの産生と産生のないHIV-1感染者の血液単核細胞のトランスクリプトーム分析
- RAB11FIP5と自然殺虫細胞機能との関連を中心とした差異的遺伝子発現分析.
- RAB11FIP5がNK細胞活動に与える影響を評価する機能試験
主要な成果:
- bnAbsを生成する個体において,内分子のリサイクルに関与するRabエフェクタータンパク質をコードするRAB11FIP5のアップレギュレーションが確認された.
- RAB11FIP5はNK細胞における最も高い差異表現を示し,NK細胞サブセットの調節不全と相関していた.
- bnAbを産生する個体からのNK細胞は,RAB11FIP5レベルに関連した,デグラヌレーションとサイトカインの産生を阻害した適応性/機能不全のフェノタイプを示した.
結論:
- 自然キラー (NK) 細胞とRab11 リサイクルエンドソーム輸送は,HIV-1 bnAbの発達の調節に関与しています.
- この発見は,NK細胞の機能とHIV-1抗体反応の制御における内分体密輸を含む新しい経路を示唆する.
- この研究は,HIVワクチン戦略に活用できる宿主主導のメカニズムについての洞察を提供します.
関連する概念動画
Cell Specific Gene Expression
16.6K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.6K
What is Gene Expression?
196.8K
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
196.8K
Alterations in Respiration II
1.8K
There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
1.8K
What is Natural Selection?
129.5K
Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
129.5K
Humoral Immune Responses
84.0K
Overview
84.0K
Acids, Bases and Neutralization Reactions
63.8K
An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society.
63.8K


