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L-leucyl-L-leucine methyl ester
A 2-amino acid compound with immunomodulatory activity. L-leucyl-L-leucine methyl ester (LLME) is a lysosomotropic agent entering cells via receptor-mediated endocytosis. LLME undergoes a condensation process catalyzed by dipeptidyl peptidase I (DPPI) in lysosomes. Condensation of LLME leads to lysosomal rupture and DNA fragmentation in DPPI-expressing immune cells such as cytotoxic T-cells and natural killer cells. Therefore, this agent may be able to decrease the incidence of graft versus host disease (GVHD) via cytotoxic T-cell depletion. Furthermore, LLME has the potential for augmenting antibody production when used in pretreatment of peripheral blood mononuclear cells (PBMCs), possibly by interfering with gene expression of inflammatory factors. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)