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Related Concept Videos

Immunodeficiency Diseases01:25

Immunodeficiency Diseases

3.7K
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.
There are three main causes of immunodeficiency...
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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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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

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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Humoral Immune Responses01:36

Humoral Immune Responses

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Overview
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Mutations01:39

Mutations

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Related Experiment Video

Updated: Apr 30, 2026

Flow Cytometric Characterization of Murine B Cell Development
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Genetic defects in B-cell development and their clinical consequences.

H Abolhassani, N Parvaneh, N Rezaei

    Journal of Investigational Allergology & Clinical Immunology
    |April 29, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Gene expression in hematopoietic stem cells regulates B cell differentiation. This overview details gene mutations in B-cell development and their clinical impacts on antibody deficiencies.

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    VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
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    VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

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    Area of Science:

    • Immunology
    • Molecular Biology
    • Genetics

    Background:

    • Hematopoietic stem cell gene expression influences B cell differentiation in the liver and bone marrow.
    • Naïve B cells require specific genes for antigen-dependent development in lymphoid organs.
    • Advanced molecular mechanisms of primary antibody deficiencies are increasingly understood.

    Purpose of the Study:

    • To provide a comprehensive overview of gene mutations implicated in B-cell development.
    • To correlate these genetic mutations with their clinical consequences in patients.
    • To enhance understanding of the molecular basis of primary antibody deficiencies.

    Main Methods:

    • Literature review of gene expression studies in hematopoietic stem cells.
    • Analysis of molecular mechanisms in B-cell differentiation.
    • Compilation of data on gene mutations and associated clinical outcomes.

    Main Results:

    • Specific gene expression patterns in hematopoietic stem cells are critical for B cell lineage commitment.
    • Deficiencies in particular genes disrupt B cell maturation and function.
    • Identified mutations directly correlate with the severity and type of primary antibody deficiencies.

    Conclusions:

    • Genetic factors play a pivotal role in B-cell development and immune function.
    • Understanding these gene mutations is crucial for diagnosing and managing primary antibody deficiencies.
    • Further research into B-cell development genes may reveal new therapeutic targets.