Repairing thymic function.

Abstract:

PURPOSE OF REVIEW:Maintenance of T-cell function and modulation of tolerance are critical issues in organ transplantation. The thymus is the primary organ for T-cell generation, and a preserved thymic function is essential for a self-tolerant diverse T-cell repertoire. Transplant procedures and related immunosuppressive drugs may hinder thymic integrity and function. We review here the recent advances in understanding the regulation of the unique thymic microenvironment with relevance for the field of transplantation. RECENT FINDINGS:Recent studies have assigned a role for IL-22 in the regeneration of thymic epithelium, and for microRNAs in the modulation of its survival and function. The interplay of key molecules in the cross-talk between thymic epithelial cells and thymocytes was depicted, opening new perspectives for the in-vitro recapitulation of T-cell development and for thymic transplantation. Additionally, the thymus was shown to be able to sustain thymocyte progenitor renewal. SUMMARY:These findings open new venues of research toward therapeutic interventions in the endogenous thymus to modulate or reconstitute the immune system; thymic transplantation; and the future development of artificial thymus, which would represent an important tool to achieve tolerance across the histocompatibility barriers.

authors

Nunes-Cabaço H,Sousa AE

doi

10.1097/MOT.0b013e3283615df9

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

363-8

issue

3

eissn

1087-2418

issn

1531-7013

pii

00075200-201306000-00019

journal_volume

18

pub_type

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