Related Experiment Video

Updated: Jul 20, 2026

Preparation of Single-Cell Suspension of Mouse Thymic Epithelial Cells and Staining of Intracellular Molecules for Flow Cytometric Analysis
09:41

Preparation of Single-Cell Suspension of Mouse Thymic Epithelial Cells and Staining of Intracellular Molecules for Flow Cytometric Analysis

Published on: July 26, 2024

A novel role for caveolin-1 in B lymphocyte function and the development of thymus-independent immune responses

Freddy A Medina1, Terence M Williams, Federica Sotgia

  • 1Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA.

Cell Cycle (Georgetown, Tex.)
|August 25, 2006
PubMed

Insights

Caveolin-1 (Cav-1) is expressed in B-lymphocytes and is crucial for antibody production, particularly for thymus-independent immune responses. Cav-1 deficiency impairs IgG3 secretion and overall antibody levels.

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Caveolin-1 (Cav-1) acts as a signaling scaffold, but its role in immunity was unclear.
  • Previous studies presented conflicting data regarding Cav-1 expression and function in the immune system.

Purpose of the Study:

  • To investigate the expression and function of Caveolin-1 (Cav-1) in B-lymphocytes.
  • To determine the role of Cav-1 in humoral immune responses, specifically antibody production.

Main Methods:

  • Utilized Cav-1 deficient mice and wild-type controls.
  • Immunized mice with thymus-dependent and thymus-independent antigens.
  • Analyzed antibody levels, B-cell proliferation, and IgG3 secretion in vitro.

Main Results:

  • Cav-1 mRNA and protein are expressed in murine B-lymphocytes upon LPS stimulation.
  • Cav-1 deficient mice showed reduced serum antibody levels and impaired responses to thymus-independent antigens.
  • Cav-1 deficient B cells exhibited reduced IgG3 secretion in vitro, despite normal proliferation and lymphocyte populations.

Conclusions:

  • Confirms Cav-1 expression in activated B-lymphocytes and human plasma cells.
  • Demonstrates a significant role for Cav-1 in thymus-independent humoral immune responses.
  • Highlights Cav-1 as a key regulator in specific antibody production pathways.

More Related Videos

Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor10:33

Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor

Published on: December 7, 2015

Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay06:15

Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay

Published on: September 7, 2018

Related Concept Videos

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...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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...
Primary Lymphoid Organs01:16

Primary Lymphoid Organs

Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
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...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...