Related Experiment Video

Updated: Mar 19, 2026

Bone Marrow-derived Macrophage Production
07:06

Bone Marrow-derived Macrophage Production

Published on: November 22, 2013

75.7K

Innate Immune Memory: Activation of Macrophage Killing Ability by Developmental Duties

David Schneider1, Ann Thomas Tate2

  • 1Department of Microbiology and Immunology, Stanford University, Stanford, CA, USA.

Current Biology : CB
|June 22, 2016
PubMed

Insights

Innate immune memory, previously linked to microbes, can also be triggered by engulfing dead cells in fruit flies. This finding emphasizes the role of early life events in shaping immune system responses.

Area of Science:

  • Immunology
  • Developmental Biology
  • Cell Biology

Background:

  • Innate immunity in many species shows memory characteristics after microbial encounters.
  • Understanding innate immune memory mechanisms is crucial for immune system development.

Purpose of the Study:

  • To investigate if innate immune memory in Drosophila can be induced by non-microbial stimuli.
  • To explore the role of apoptotic cell engulfment in immune priming.

Main Methods:

  • Utilized Drosophila melanogaster as a model organism.
  • Employed embryonic macrophages to study innate immune memory.
  • Investigated the effects of apoptotic cell engulfment on macrophage responses.

Main Results:

  • Successful engulfment of apoptotic cells induced innate immune memory in Drosophila embryonic macrophages.
  • This non-microbial exposure primes the immune system for future responses.

Conclusions:

  • Innate immune memory is not solely dependent on microbial exposure.
  • Engulfment of apoptotic cells represents a novel pathway for inducing innate immune memory.
  • Early life exposure events significantly influence the development of adaptive immune capabilities.

More Related Videos

Using RNA-interference to Investigate the Innate Immune Response in Mouse Macrophages12:47

Using RNA-interference to Investigate the Innate Immune Response in Mouse Macrophages

Published on: November 3, 2014

12.3K
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates09:12

Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates

Published on: January 30, 2014

16.9K

Related Concept Videos

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...
9.4K
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
85.9K
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...
10.2K
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...
3.3K
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...
2.4K
Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
11.4K