IMR Press / FBL / Volume 12 / Issue 11 / DOI: 10.2741/2382

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article
Toll-like receptors and their role in transplantation
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1 Department of Internal Medicine, Section of Cardiology, Yale University, 333 Cedar Street, P.O. Box 208017, New Haven, CT 06520-8017, USA
Academic Editor:Frank Dor
Front. Biosci. (Landmark Ed) 2007, 12(11), 4221–4238;
Published: 1 May 2007
(This article belongs to the Special Issue Transplantation: current developments and future directions)

The innate immune system is an ancient, conserved pathogen response system that lays the foundation for self/non-self discrimination. The cells of the innate immune system are responsible for recognizing the highly conserved molecular motifs of microbial pathogens and represent the first line of immunological defense as well as contributing to the activation of the adaptive immune response. Toll-like receptors are a family of 13 germline-encoded receptors on antigen presenting cells, T cells and various non-lymphoid tissues that are critically important for innate immune function and inflammatory responses. Furthermore, numerous clinical and experimental animal studies have demonstrated the importance of Toll-like receptors as well as members of their signaling pathways in the setting of organ transplantation, where endogenous ligands may play a significant role. Toll-like receptor signaling has the capacity to inhibit transplantation tolerance. A complete understanding of the relationship between Toll-like receptor signaling and transplantation tolerance is essential to modifying, reducing or abrogating immune suppression as well as improving patient outcomes.

Innate Immunity
Regulatory T Cell
Toll-like receptor
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