Abstract:
:Peptide-major histocompatibility complex class II (pMHCII)-based nanomedicines displaying tissue-specific autoantigenic epitopes can blunt specific autoimmune conditions by re-programming cognate antigen-experienced CD4+ T-cells into disease-suppressing T-regulatory type 1 (TR1) cells. Here, we show that single pMHCII-based nanomedicines displaying epitopes from mitochondrial, endoplasmic reticulum or cytoplasmic antigens associated with primary biliary cholangitis (PBC) or autoimmune hepatitis (AIH) can broadly blunt PBC, AIH and Primary Sclerosing Cholangitis in various murine models in an organ- rather than disease-specific manner, without suppressing general or local immunity against infection or metastatic tumors. Therapeutic activity is associated with cognate TR1 cell formation and expansion, TR1 cell recruitment to the liver and draining lymph nodes, local B-regulatory cell formation and profound suppression of the pro-inflammatory capacity of liver and liver-proximal myeloid dendritic cells and Kupffer cells. Thus, autoreactivity against liver-enriched autoantigens in liver autoimmunity is not disease-specific and can be harnessed to treat various liver autoimmune diseases broadly.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Umeshappa CS,Singha S,Blanco J,Shao K,Nanjundappa RH,Yamanouchi J,Parés A,Serra P,Yang Y,Santamaria Pdoi
10.1038/s41467-019-09893-5subject
Has Abstractpub_date
2019-05-14 00:00:00pages
2150issue
1issn
2041-1723pii
10.1038/s41467-019-09893-5journal_volume
10pub_type
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