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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Overview
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Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
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Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
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B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
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Immune Response Against Viral Pathogens01:29

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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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適応 的 な 免疫 反応 を 模倣 する 多 機械 通信 ネットワーク

Pei-Qiang Ma1, Qing Huang1, Hua-Dong Li1

  • 1Laboratory of Biosystem and Microanalysis, State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , Shanghai 200237 , China.

Journal of the American Chemical Society
|February 8, 2020
PubMed
まとめ

研究者は適応免疫反応 (AIR) を模倣したマルチマシン通信ネットワーク (MMCN) を作成した. このDNAナノ粒子のシステムは 病原体を検知し 消去し 記憶を形成し 将来の反応を早めることができます

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科学分野:

  • バイオミメティックシステム工学
  • 合成生物学
  • ナノテクノロジー

背景:

  • 生物学的システム,特に適応免疫反応 (AIR) は複雑な機能モデルを提供しています.
  • 設計可能なシステムで 生物学的知能を模倣することは 合成生物学の重要な目標です
  • ゴールドナノ粒子は 機能的な分子マシンを 構築するための多用途のプラットフォームを提供します

研究 の 目的:

  • 適応免疫反応 (AIR) を真似たマルチマシン通信ネットワーク (MMCN) を開発する.
  • DNAマシンを使って免疫細胞 (デンドリット細胞,T細胞,B細胞) の相互作用をシミュレートする.
  • 病原体検出と除去のための反応性のある記憶形成システムを作成します.

主な方法:

  • 3種類のDNAマシンを 機能化された金ナノ粒子から作りました
  • 機械の制御と相互作用を可能にする軌道,移動,燃料のための統合標準モジュール.
  • 免疫細胞の連続的な活性化と 協調した反応をシミュレートするために ネットワークを設計しました

主要な成果:

  • 開発されたMMCNは適応免疫反応を成功裏に模倣した.
  • ネットワークは標的病原体を検知し 排除する能力を示しました
  • このシステムはメモリを形成し 病原体の侵入に より迅速かつ効果的な対応を可能にしました

結論:

  • MMCNは適応免疫のような 複雑な生物学的機能を模倣する 新しいプラットフォームを提供します
  • このモジュラーシステムは適応性,時空制御,効率的な反応を可能にします.
  • この技術は,多様な高度なタスクのための洗練されたネットワークを構築する可能性を秘めています.