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T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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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...
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B Cell Activation and Differentiation01:24

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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.
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Antigen Presenting Cells01:22

Antigen Presenting Cells

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The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
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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.
NK Cells
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Cells of the Adaptive Immune Response01:23

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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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Cell-mediated Immune Responses01:40

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An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets
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Antigen presentation for priming T cells in central system.

Shaoni Dasgupta1, Subhajit Dasgupta2

  • 1Academic Magnet High School, Charleston, SC, United States.

The International Journal of Biochemistry & Cell Biology
|December 2, 2016
PubMed
Summary

Neuroimmune responses involve myelin antigen-specific T cells, crucial for demyelination. This study examines antigen presentation in the central nervous system to guide future immunotherapy for conditions like lupus cerebritis.

Keywords:
AntigenCentral nervous systemDendritic cellsLymphocyteMHC

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Flow Cytometric Analysis of Lymphocyte Infiltration in Central Nervous System during Experimental Autoimmune Encephalomyelitis
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Area of Science:

  • Neuroimmunology
  • Central Nervous System Inflammation
  • Autoimmune Diseases

Background:

  • Myelin antigen-specific T cells drive neuroimmune responses and demyelination.
  • Antigen priming location influences chronic and acute inflammation, with effector T cells often originating in the periphery for multiple sclerosis.
  • The precise mechanisms behind chronic relapsing-remitting neuroinflammation remain unclear.

Purpose of the Study:

  • To investigate the role of antigen-primed T cells in lupus cerebritis.
  • To analyze current findings on antigen presentation within the central nervous system.
  • To visualize myelin antigen presentation signaling to T cells for future immunotherapy strategies.

Main Methods:

  • Review and analysis of existing research on antigen presentation in the central nervous system.
  • Focus on the roles of microglia, dendritic cells, macrophages, and circulating B-lymphocytes as antigen-presenting cells.
  • Examination of signaling pathways involved in myelin antigen presentation to T cells.

Main Results:

  • Microglia, infiltrated dendritic cells, and macrophages are key antigen-presenting cells in the CNS.
  • Circulating B-lymphocytes represent a significant area of interest for antigen presentation.
  • Understanding these processes is vital for elucidating neuroinflammatory mechanisms.

Conclusions:

  • Visualizing myelin antigen presentation signaling to T cells is essential for advancing immunotherapy research.
  • Further investigation into antigen-presenting cells within the CNS can clarify mechanisms of neuroinflammation.
  • This analysis provides a foundation for developing targeted immunotherapies for demyelinating diseases.