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Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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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.
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When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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Related Experiment Video

Updated: May 4, 2026

Establishment of a Human Multiple Myeloma Xenograft Model in the Chicken to Study Tumor Growth, Invasion and Angiogenesis
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Establishment of a Human Multiple Myeloma Xenograft Model in the Chicken to Study Tumor Growth, Invasion and Angiogenesis

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Immunoregulatory T cell function in multiple myeloma.

H Ozer, T Han, E S Henderson

    The Journal of Clinical Investigation
    |March 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Multiple myeloma involves abnormal B cell growth. Research shows myeloma T cells have a specific suppressor deficit, impacting immune regulation in this cancer.

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    Area of Science:

    • Immunology
    • Hematology
    • Oncology

    Background:

    • Multiple myeloma is a B cell malignancy with reduced polyclonal immunoglobulin production.
    • T cell help is crucial for B cell differentiation and immunoglobulin secretion.
    • Suppressor T cells and monocytes can inhibit B cell responses.

    Purpose of the Study:

    • To investigate the function of T cell subsets in multiple myeloma.
    • To determine the role of T cell dysfunction in the pathogenesis of multiple myeloma.

    Main Methods:

    • Utilized in vitro pokeweed mitogen-induced B cell differentiation assays.
    • Fractionated T cells based on Fc receptors (Tgamma, Tmu, T non-gamma).
    • Assessed B cell proliferation and IgG secretion using radiolabeling and radioimmunoassay.

    Main Results:

    • Myeloma B cells showed normal proliferation but deficient differentiation and immunoglobulin secretion.
    • Myeloma T cells exhibited normal helper capacity but deficient radiosensitive suppressor activity.
    • T suppressor cell dysfunction in multiple myeloma is linked to a deficit in the T non-gamma subset.

    Conclusions:

    • Multiple myeloma is characterized by a specific T suppressor cell deficit, particularly in the T non-gamma subset.
    • This T suppressor dysfunction may contribute to the pathogenesis of multiple myeloma.
    • The findings highlight the heterogeneity of immune dysregulation in multiple myeloma.