Lipid length and iso-branching of trehalose diesters influences Mincle agonist activity
作者:Ayesha Khan、Kristel Kodar、Mattie S.M. Timmer、Bridget L. Stocker
DOI:10.1016/j.tet.2017.11.076
日期:2018.3
We report on the efficient synthesis of linear trehalose diesters (TDEs) and iso-branched TDEs (maradolipids or iso-TDEs) and their ability to activate bone marrow-derived macrophages (BMDMs) as determined by cytokine (IL-1 beta, IL-12, IL-6, IL-10) and chemokine (MIP-2) production. Both classes of TDEs were found to activate BMDMs in a Mincle-dependent manner, with longer-chain (>= C18) lipids leading to a robust inflammatory response. On the whole, the iso-branched TDEs led to greater cytokine production and a faster immune response when compared to their linear counterparts. Moreover, C12-TDE and iso-C12-TDE elicited the production of MIP-2 by BMDMs, thereby providing the first example of TDEs with a chain length of <= C12 leading to a Mincle-dependent immune response and one that is less inflammatory in nature. (C) 2017 Elsevier Ltd. All rights reserved.