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Precision DNA demethylation ameliorates disease in lupus-prone mice.


ABSTRACT: Defective DNA methylation in T cells leads to a series of T cell abnormalities in lupus; however, the full effect of T cell lineage-specific DNA methylation on disease expression has not been explored. Here, we show that 5-azacytidine, a DNA methyltransferase inhibitor, targeted to either CD4 or CD8 T cells in mice with established disease using a nanolipogel delivery system dramatically ameliorates lupus-related pathology through distinct mechanisms. In vivo targeted delivery of 5-azacytidine into CD4 T cells favors the expansion and function of Foxp3+ Tregs, whereas targeted delivery to CD8 T cells enhances the cytotoxicity and restrains the expansion of pathogenic TCR-αβ+CD4-CD8- double-negative T cells. Our results signify the importance of cell-specific inhibition of DNA methylation in the treatment of established lupus.

SUBMITTER: Li H 

PROVIDER: S-EPMC6141184 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Precision DNA demethylation ameliorates disease in lupus-prone mice.

Li Hao H   Tsokos Maria G MG   Bickerton Sean S   Sharabi Amir A   Li Yi Y   Moulton Vaishali R VR   Kong Philip P   Fahmy Tarek M TM   Tsokos George C GC  

JCI insight 20180823 16


Defective DNA methylation in T cells leads to a series of T cell abnormalities in lupus; however, the full effect of T cell lineage-specific DNA methylation on disease expression has not been explored. Here, we show that 5-azacytidine, a DNA methyltransferase inhibitor, targeted to either CD4 or CD8 T cells in mice with established disease using a nanolipogel delivery system dramatically ameliorates lupus-related pathology through distinct mechanisms. In vivo targeted delivery of 5-azacytidine i  ...[more]

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