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Related Concept Videos

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...
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
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...
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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview

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Related Experiment Video

Updated: Jun 21, 2026

Measurement of Natural Killer Cell-Mediated Cytotoxicity and Migration in the Context of Hepatic Tumor Cells
06:55

Measurement of Natural Killer Cell-Mediated Cytotoxicity and Migration in the Context of Hepatic Tumor Cells

Published on: February 22, 2020

How do natural killer T cells help B cells?

Mark L Lang1

  • 1Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA. mark-lang@ouhsc.edu

Expert Review of Vaccines
|July 25, 2009
PubMed
Summary
This summary is machine-generated.

Natural killer (NKT) cells enhance antibody production through direct interactions and cytokine secretion. Understanding these mechanisms can improve vaccine efficacy and antibody responses in humans.

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Natural Killer (NK) and CAR-NK Cell Expansion Method using Membrane Bound-IL-21-Modified B Cell Line

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Area of Science:

  • Immunology
  • Vaccinology

Background:

  • CD1d-restricted natural killer (NKT) cells are crucial for antigen-specific antibody responses.
  • Activating NKT cells is a key strategy for enhancing vaccine-induced protective antibody responses.

Purpose of the Study:

  • To review the mechanisms by which NKT cells enhance antibody responses.
  • To discuss the role of NKT cells in B cell differentiation and humoral immunity.

Main Methods:

  • Review of existing literature on NKT cell interactions with B cells, dendritic cells, and helper T cells.
  • Analysis of NKT cell-mediated B cell help, including receptor-mediated interactions and cytokine secretion.

Main Results:

  • Both cognate and noncognate interactions between CD1d-expressing B cells and NKT cells enhance antibody responses.
  • NKT cells provide B cell help via direct interactions and soluble factors like cytokines.
  • NKT cells influence B cell differentiation into memory B cells and plasma cells.

Conclusions:

  • NKT cells play a significant role in humoral immunity by supporting B cell responses.
  • Further research is needed to fully understand NKT cell functions and their translation from murine models to human applications.
  • Targeting NKT cell activation holds promise for improving vaccine efficacy and antibody-based therapies.