微細粒子による免疫系の活性化とアレルギー性炎症

  • 黒田 悦史
    大阪大学免疫学フロンティア研究センターワクチン学研究室
  • 石井 健
    医薬基盤・健康・栄養研究所創薬デザイン研究センターワクチンデザインプロジェクト 医薬基盤・健康・栄養研究所アジュバント開発プロジェクト

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  • Particulates Induce Type-2 Immune Responses

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<p>Particulates are considered to be one of the causative factors for allergic asthma and rhinitis in developed countries. Indeed, particulates and crystals are reported to activate type-2 immunity, which is associated with allergic responses. Thus far, many studies have been carried out to determine how particulates trigger immune responses; however, the detailed mechanisms by which immune responses are triggered are still unknown. One important clue is that particulates have an adjuvant activity and boost immune responses toward type-2 responses. Most adjuvants are considered to activate innate immunity, and then activated innate immune cells stimulate adaptive immunity, which involves T cells and B cells. That is why many scientists believe that particulate adjuvants directly stimulate innate cells through unique sensor proteins such as pattern-recognition receptors. In this review, we will introduce the proposed mechanisms of particulate-induced immune activation from the viewpoint of the activation of innate immune responses and related receptors and sensors.</p>

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