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Related Concept Videos

Autophagy01:27

Autophagy

Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
Autophagic Cell Death01:18

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Phagocytosis of Apoptotic Cells01:17

Phagocytosis of Apoptotic Cells

Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or  immature dendritic cells. Non-professional phagocytes such as  epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes. 
Normal cells contain receptors that prevent them from being recognized by phagocytes.
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...

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Related Experiment Video

Updated: Jun 11, 2026

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry
11:39

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

Published on: July 21, 2017

Autophagy and adaptive immunity.

Victoria L Crotzer1, Janice S Blum

  • 1Department of Microbiology and Immunology, Center for Immunobiology, Indiana University School of Medicine, Indianapolis, IN, USA.

Immunology
|July 1, 2010
PubMed
Summary
This summary is machine-generated.

Autophagy, a cellular recycling process, is crucial for immune cell function, impacting pathogen surveillance and adaptive immunity. It influences lymphocyte development and antigen presentation, vital for T-cell responses.

More Related Videos

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
07:20

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Related Experiment Videos

Last Updated: Jun 11, 2026

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry
11:39

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

Published on: July 21, 2017

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
07:20

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Area of Science:

  • Cellular Biology
  • Immunology

Background:

  • Autophagy maintains intracellular homeostasis by degrading cellular components.
  • In immune cells, autophagy is essential for pathogen surveillance and recognizing self-antigens.
  • Autophagy pathways significantly influence innate and adaptive immunity development.

Purpose of the Study:

  • To elucidate the multifaceted roles of autophagy in immune cell function.
  • To explore how autophagy impacts antigen processing, presentation, and T-cell responses.
  • To understand the mechanistic links between autophagy and immune cell development and survival.

Main Methods:

  • Review of existing literature on autophagy and immunity.
  • Analysis of studies investigating autophagy's role in antigen presentation pathways (MHC class I and II).
  • Examination of research on autophagy's influence on lymphocyte development and survival.

Main Results:

  • Autophagy regulates lymphocyte development, survival, and antigen processing.
  • Specialized autophagy enhances major histocompatibility complex (MHC) class I antigen presentation, boosting CD8(+) T-cell responses.
  • Autophagy is critical for MHC class II antigen presentation and influences CD4(+) T-cell responses to pathogens.

Conclusions:

  • Autophagy plays a critical role in adaptive immunity, influencing antigen presentation and T-cell responses.
  • Further research is needed to fully understand the mechanisms by which autophagy-linked genes regulate immune cell functions.
  • Autophagy is a key regulator of immune cell development, survival, and pathogen recognition.