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review article

Modes of antigen presentation by lymph node stromal cells and their immunological implications

Hirosue, Sachiko
•
Dubrot, Juan
2015
Frontiers In Immunology

Antigen presentation is no longer the exclusive domain of cells of hematopoietic origin. Recent works have demonstrated that lymph node stromal cell (LNSC) populations, such as fibroblastic reticular cells, lymphatic and blood endothelial cells, not only provide a scaffold for lymphocyte interactions but also exhibit active immunomodulatory roles that are critical to mounting and resolving effective immune responses. Importantly, LNSCs possess the ability to present antigens and establish antigenspecific interactions with T cells. One example is the expression of peripheral tissue antigens, which are presented on major histocompatibility complex (MHC)-I molecules with tolerogenic consequences on T cells. Additionally, exogenous antigens, including self and tumor antigens, can be processed and presented on MHC-I complexes, which result in dysfunctional activation of antigen-specific CD8+ T cells. While MHCI is widely expressed on cells of both hematopoietic and non-hematopoietic origins, antigen presentation via MHC-II is more precisely regulated. Nevertheless, LNSCs are capable of endogenously expressing, or alternatively, acquiring MHC-II molecules. Transfer of antigen between LNSC and dendritic cells in both directions has been recently suggested to promote tolerogenic roles of LNSCs on the CD4+ T cell compartment. Thus, antigen presentation by LNSCs is thought to be a mechanism that promotes the maintenance of peripheral tolerance as well as generates a pool of diverse antigen-experienced T cells for protective immunity. This review aims to integrate the current and emerging literature to highlight the importance of LNSCs in immune responses, and emphasize their role in antigen trafficking, retention, and presentation.

  • Details
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Type
review article
DOI
10.3389/fimmu.2015.00446
Web of Science ID

WOS:000361632700001

Author(s)
Hirosue, Sachiko
Dubrot, Juan
Date Issued

2015

Publisher

Frontiers Media Sa

Published in
Frontiers In Immunology
Volume

6

Start page

446

Subjects

lymph node

•

stromal cells

•

antigen presentation

•

cross-presentation

•

immunomodulation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
IBI  
Available on Infoscience
December 2, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/121254
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