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関連する概念動画

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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 reactivity.
Antigen Processing Pathways01:31

Antigen Processing Pathways

MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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...
Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...

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関連する実験動画

Updated: Jul 18, 2026

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation
12:09

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation

Published on: February 28, 2019

CNSの発達と可塑性におけるクラスIのMHCの機能要件

G S Huh1, L M Boulanger, H Du

  • 1Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA. gshuh@alum.mit.edu

Science (New York, N.Y.)
|December 16, 2000
PubMed
まとめ

クラスIメジャー・ヒストコンパティビリティ・コンプレックス (MHC) の分子は,神経細胞の発達と可塑性にとって極めて重要です. これらの分子の欠乏は,神経接続の精度を低下させ,哺乳類の中央神経系 (CNS) のシナプス可塑性を変化させます.

科学分野:

  • 神経科学は神経科学である.
  • 免疫学 免疫学とは
  • 分子生物学は分子生物学である.

背景:

  • クラスIメジャー・ヒストコンパティビリティ・コンプレックス (MHC) 分子は,免疫反応における役割として認識されています.
  • これらの分子は,活動に依存する構造的およびシナプス的な改変に関与するニューロンでも発現します.
  • ニューロンの発達と可塑性におけるクラスIMHCの正確な機能は,依然としてほとんど定義されていない.

研究 の 目的:

  • 発達中のニューラル接続の精製におけるクラスI MHC分子の役割を調査する.
  • 成人哺乳類の中枢神経系 (CNS) のシナプス可塑性に対するクラスIのMHC欠乏の影響を調査する.
  • 異なるニューロン集団におけるクラスI MHCの発現パターンを調査する.

主な方法:

  • 細胞表面のクラスI MHCまたはクラスI MHC受容体のCD3zeta成分が欠けている遺伝子組み換えマウスを利用しました.
  • 開発過程で中央ターゲットへの網膜接続の精錬を評価した.
  • N-メチル-D-アスパルテート受容体依存の長期増強 (LTP) と成人変異性マウスの海馬における長期抑うつ (LTD) を測定した.
  • ニューロンのモザイクにおける特定のクラスIのMHCメッセンジャーRNAの発現パターンを分析した.

さらに関連する動画

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry
08:07

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry

Published on: May 19, 2020

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous &beta;2-Microglobulin
11:17

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin

Published on: March 10, 2021

関連する実験動画

Last Updated: Jul 18, 2026

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation
12:09

Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation

Published on: February 28, 2019

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry
08:07

Assessing the Expression of Major Histocompatibility Complex Class I on Primary Murine Hippocampal Neurons by Flow Cytometry

Published on: May 19, 2020

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous &beta;2-Microglobulin
11:17

Stability and Structure of Bat Major Histocompatibility Complex Class I with Heterologous β2-Microglobulin

Published on: March 10, 2021

主要な成果:

  • クラスIのMHCまたはCD3zetaの遺伝的欠陥は,発達中に網膜と中心のターゲットとの間の接続の不完全な精細化をもたらしました.
  • 成人型ミュータントマウスは,ヒポキャンパスのLTPが強化され,LTDが完全に欠けていた.
  • 異なる神経細胞のモザイクは,特定のクラスIのMHCメッセンジャーRNAを表現し,多様な神経機能を示唆しています.

結論:

  • クラスIのMHC分子は,発達中の中枢神経系の神経接続の活動に依存した改造に重要な役割を果たします.
  • これらの分子は,成熟した中枢神経系において,長期の増強と抑うつを含むシナプス可塑性の調節に極めて重要です.
  • この発見は,哺乳類の脳の発達と機能におけるクラスI MHCの新しい機能を強調しています.