Related Experiment Video

Updated: Aug 4, 2026

Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes
11:48

Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes

Published on: May 31, 2018

Modulation of helper T-cell activity by macrophage products

M Février, J Chen, C Duquenne

    Annales De L'Institut Pasteur. Immunologie
    |May 1, 1986
    PubMed

    Insights

    Muramyl dipeptide (MDP) releases splenic macrophage factors (SMF) that enhance T-cell responses. This study shows SMF promotes T-cell maturation, boosting immune responses to antigens.

    Area of Science:

    • Immunology
    • Cell Biology

    Background:

    • Muramyl dipeptide (MDP) stimulates immune cells.
    • Splenic macrophage factors (SMF) enhance antibody production.

    Purpose of the Study:

    • To investigate the role of SMF in T-cell activation and differentiation.
    • To identify T-cell subpopulations affected by SMF.

    Main Methods:

    • Culturing mouse spleen cells with MDP to generate SMF.
    • Assessing the effect of SMF on T-cell dependent plaque-forming cell (PFC) responses in vitro.
    • Evaluating SMF's impact on T-cell cooperation with B cells.

    Main Results:

    • SMF enhances the in vitro PFC response to T-dependent antigens.
    • SMF potentiates the activity of T helper 2 (Th2) cells, indicated by enhanced responses to specific and bystander antigens.
    • SMF enables immature thymocytes to cooperate with B cells in antigen-specific immune responses.

    Conclusions:

    • SMF, derived from MDP-cultured spleen cells, promotes the maturation and differentiation of T cells.
    • These SMF-induced T cells are capable of responding to antigens, suggesting a role in adaptive immunity.

    More Related Videos

    Isolation, Transfection, and Culture of Primary Human Monocytes09:13

    Isolation, Transfection, and Culture of Primary Human Monocytes

    Published on: December 16, 2019

    Polarization of M1 and M2 Human Monocyte-Derived Cells and Analysis with Flow Cytometry upon Mycobacterium tuberculosis Infection10:43

    Polarization of M1 and M2 Human Monocyte-Derived Cells and Analysis with Flow Cytometry upon Mycobacterium tuberculosis Infection

    Published on: September 18, 2020

    Related Concept Videos

    Cell-mediated Immune Responses01:40

    Cell-mediated Immune Responses

    Overview
    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...
    T Cell Types and Functions01:24

    T Cell Types and Functions

    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.
    Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
    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...
    Defense Against Bacterial Pathogens01:31

    Defense Against Bacterial Pathogens

    The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
    Phagocytes
    Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
    Immune Response Against Viral Pathogens01:29

    Immune Response Against Viral Pathogens

    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
    NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...