Document Type
Article
Publication Date
10-27-2022
Abstract
Dendritic cells (DCs) are required for the initiation of the adaptive immune response. Their ability to acquire antigens in the periphery is a critical step in this process. DCs express a wide variety of adhesion molecules and possess an extremely fluid plasma membrane that facilitates scavenging the extracellular environment and capturing material like exosomes, apoptotic bodies, and pathogens. Besides these standard routes, the acquisition of antigens by DCs can be further facilitated by tunneling nanotubes, trogocytosis, and gap junctions. However, in this article, we will argue that this is an incomplete picture, as certain observations in the literature cannot be explained if we assume DCs acquire antigens only through these means. Instead, it is more likely that DCs preferentially use adhesion molecules to form long-lasting cell-cell interactions to actively siphon material from cells they are in direct contact with. It is highly likely that DCs use this mechanism to continually capture membrane and cytosolic material directly from surrounding cells, which they scan to assess the health of the donor cell. Doing so would provide an array of advantages for the host immune system, as it would not be reliant on compromised cells to release antigens into the extracellular milieu. Therefore, we propose updating our view of DC antigen acquisition to include a process of active, contact-dependent capture of material directly from neighboring cell cytosol (cytocytosis), which we would term intracellular monitoring.
Recommended Citation
Herbst, Christopher; Harshyne, Larry A; and Igyártó, Botond Z, "Intracellular Monitoring by Dendritic Cells - A New Way to Stay Informed - from a Simple Scavenger to an Active Gatherer" (2022). Department of Microbiology and Immunology Faculty Papers. Paper 166.
https://jdc.jefferson.edu/mifp/166
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
PubMed ID
36389660
Language
English
Comments
This article is the author's final published version in Frontiers in Immunology, Volume 13, October 2022, Article number 1053582.
The published version is available at https://doi.org/10.3389/fimmu.2022.1053582.
Copyright © 2022 Herbst, Harshyne and Igyártó.
his is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.