MK6-83

MK6-83 is an activator of the transient receptor potential cation channel, mucolipin subfamily (TRPML1). TRPML1 is mutated in mucolipidosis type IV (MLIV), a hereditary lysosomal storage disorder characterized by severe delays in intellectual and motor development. MK6-83 increases activity of TRPML1 in lysosomes expressing either wild type or F465L-mutated channels (EC50s = 110 and 100 nM, respectively) and in MLIV patient-derived fibroblasts. It is more effective for F465L mutations than F408Δ (EC50 = 1,230 nM). It also improves zinc trafficking out of lysosomes in F408Δ-expressing fibroblast cells.