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Cells of the Innate Immune Response

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
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Cytotoxic T Cells-mediated Immune Response

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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.
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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.
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NK cells are large granular lymphocytes found in the blood and lymphatic system. These...

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Related Experiment Video

Updated: Jun 28, 2026

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

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

Published on: February 8, 2022

NK cells: new issues and challenges. Preface.

Marco Colonna¹

¹Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO 63110, USA. mcolonna@pathology.wustl.edu

European Journal of Immunology

|November 4, 2008

Summary

This summary is machine-generated.

Natural killer (NK) cells are vital for immunity, but their diverse subsets and interactions remain unclear. Future research aims to harness NK cells for novel cancer therapies and understand their role in autoimmunity.

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Area of Science:

Immunology
Cell Biology
Innate Immunity

Background:

Natural killer (NK) cells are key innate lymphocytes involved in host defense against pathogens and tumors.
While fundamental NK cell functions are known, significant questions persist regarding their heterogeneity and regulatory mechanisms.

Discussion:

Explores the potential for distinct NK cell subsets with unique developmental origins and functions.
Investigates NK cell interactions with other immune cells, including dendritic cells (DCs), effector T cells, and regulatory T cells (Tregs).
Addresses the mechanisms of NK cell self-tolerance and prevention of autoimmunity.

Key Insights:

Highlights the ongoing debate on NK cell equality versus functional specialization.
Emphasizes the complex interplay between NK cells and other immune components in orchestrating adaptive immunity.
Underscores the importance of understanding NK cell regulation for therapeutic applications.

Outlook:

Discusses the potential for developing novel NK cell-based cancer immunotherapies.
Identifies key challenges and opportunities in NK cell research.
Presents emerging concepts from leading experts in the field.