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相关概念视频

Allergic Reactions02:06

Allergic Reactions

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Overview
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Allergic Drug Reactions01:27

Allergic Drug Reactions

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Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...
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Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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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:
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Inflammatory Response01:28

Inflammatory Response

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An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
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Antibody Structure01:10

Antibody Structure

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Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
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Sympathetic Signaling01:31

Sympathetic Signaling

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Sympathetic signaling, a vital part of the autonomic nervous system, plays a crucial role in mobilizing the body's resources in response to stress or emergencies. It involves the transmission of nerve impulses from sympathetic preganglionic fibers to postganglionic fibers. This results in the release of specific neurotransmitters and activation of adrenergic receptors.
Sympathetic preganglionic fibers release the neurotransmitter acetylcholine (ACh) onto the ganglionic neurons in the...
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Humanized Mediator Release Assay as a Read-Out for Allergen Potency
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Humanized Mediator Release Assay as a Read-Out for Allergen Potency

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S1PR2-miR-212反循环调节过敏反应

Jaewhoon Jeoung1, Hyein Jo1, Wonho Kim1

  • 1Department of Biochemistry, Kangwon National University, Chuncheon 24341, South Korea.

Molecular immunology
|October 7, 2025
PubMed
概括

氨酸-1-酸盐受体2 (S1PR2) 在过敏反应中起着关键作用. 在S1PR2和miR-212之间的负反循环调节了这些体外和体内免疫反应.

科学领域:

  • 免疫学 免疫学 免疫学
  • 分子生物学分子生物学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 洛卡格拉米德-A (roc-A) 具有抗过敏作用.
  • 分子对接建议roc-A与基-1-酸盐受体2 (S1PR2) 相结合.
  • 这表明S1PR2在过敏反应中的潜在作用.

研究的目的:

  • 研究S1PR2在过敏反应中的作用.
  • 阐明涉及S1PR2和microRNA-212 (miR-212) 的调节机制.

主要方法:

  • 使用大鼠基白血病 (RBL2H3) 细胞和被动系统性过敏反应 (PSA) 和被动皮肤性过敏反应 (PCA) 的动物模型.
  • 通过西方抹黑和RT-qPCR评估S1PR2和CXCL1的表达.
  • 进行了分子对接,化酶测定和miR-212模仿转染.

主要成果:

  • 抗原刺激增加了RBL2H3细胞中S1PR2的表达;S1P也独立于抗原上调S1PR2.
  • 在体外过敏反应和体内过敏反应中,S1PR2是必不可少的.
  • 斯芬戈辛抑制了抗原诱导的S1PR2上调和过敏特征,包括反应性氧物种 (ROS) 生产.
  • 在PSA期间CXCL1表达增加,调解过敏反应.
关键词:
过敏反应 (ANAPHYLAXIS) 是一种过敏反应.机制 机制 机制在 MiR-21212 中,它是最好的.斯芬哥辛-1-酸盐受体2 2

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  • 目标扫描预测miR-212与S1PR2 3′ UTR结合;miR-212模仿转染抑制了S1PR2和PCA.
  • 降低S1PR2调节在抗原刺激细胞中增加了miR-212,这表明了负反循环.

    • 结论:

    • S1PR2是过敏反应的关键媒介.
    • 在S1PR2和miR-212之间的负反循环调节过敏反应.
    • 这个S1PR2-miR-212轴代表了对过敏性疾病的潜在治疗目标.