Abstract:
:Histone/protein deacetylases (HDACs) regulate chromatin remodeling and gene expression as well as the functions of more than 50 transcription factors and nonhistone proteins. We found that administration of an HDAC inhibitor (HDACi) in vivo increased Foxp3 gene expression, as well as the production and suppressive function of regulatory T cells (T(reg) cells). Although T(reg) cells express multiple HDACs, HDAC9 proved particularly important in regulating Foxp3-dependent suppression. Optimal T(reg) function required acetylation of several lysines in the forkhead domain of Foxp3, and Foxp3 acetylation enhanced binding of Foxp3 to the Il2 promoter and suppressed endogenous IL-2 production. HDACi therapy in vivo enhanced T(reg)-mediated suppression of homeostatic proliferation, decreased inflammatory bowel disease through T(reg)-dependent effects, and, in conjunction with a short course of low-dose rapamycin, induced permanent, T(reg)-dependent cardiac and islet allograft survival and donor-specific allograft tolerance. Our data show that use of HDACi allows the beneficial pharmacologic enhancement of both the numbers and suppressive function of Foxp3(+) T(reg) cells.
journal_name
Nat Medjournal_title
Nature medicineauthors
Tao R,de Zoeten EF,Ozkaynak E,Chen C,Wang L,Porrett PM,Li B,Turka LA,Olson EN,Greene MI,Wells AD,Hancock WWdoi
10.1038/nm1652subject
Has Abstractpub_date
2007-11-01 00:00:00pages
1299-307issue
11eissn
1078-8956issn
1546-170Xpii
nm1652journal_volume
13pub_type
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