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Related Concept Videos

Development of Immunocompetence01:22

Development of Immunocompetence

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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
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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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Immunodeficiency Diseases01:25

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Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
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Related Experiment Video

Updated: Jun 10, 2025

Characterization of Thymic Settling Progenitors in the Mouse Embryo Using In Vivo and In Vitro Assays
08:56

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Thymic inborn errors of immunity.

Francesca Pala1, Luigi D Notarangelo1, Michail S Lionakis1

  • 1Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.

The Journal of Allergy and Clinical Immunology
|October 20, 2024
PubMed
Summary

Inborn errors of immunity affecting the thymus can cause severe health issues. Early detection and thymic transplantation offer hope for affected individuals.

Keywords:
AIRECHD7EXTL3FOXI3FOXN1Inborn errors of immunityNFKB2PAX1T-cell lymphopeniaTBX1thymic developmentthymic stroma

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Area of Science:

  • Immunology
  • Genetics
  • Developmental Biology

Background:

  • The thymus is vital for T-cell development, ensuring immune tolerance and response to foreign antigens.
  • Inborn errors of immunity (IEI) can disrupt thymic development or function, leading to severe health complications.
  • These conditions present with infections, autoimmunity, and various organ abnormalities.

Purpose of the Study:

  • To review current knowledge on IEI impacting thymic development and function.
  • To discuss the genetic basis, immunopathogenesis, diagnosis, and treatment strategies for these disorders.

Main Methods:

  • Literature review and synthesis of existing research on thymic IEI.
  • Analysis of genetic, clinical, and immunological data from affected individuals.

Main Results:

  • Recognition of diverse IEI affecting thymic function, leading to significant morbidity.
  • Advancements in newborn screening and thymic transplantation show potential for improved patient outcomes.

Conclusions:

  • Understanding the genetics and pathogenesis of thymic IEI is crucial for diagnosis and treatment.
  • Early intervention through screening and novel therapies like thymic transplantation can improve the prognosis for patients with thymic disorders.