Piperlongumine and some of its analogs inhibit selectively the human immunoproteasome over the constitutive proteasome. - Bosc E; Nastri J; Lefort V; Valli M; Contiguiba F; Pioli R; Furlan M; Bolzani VDS; El Amri C; Reboud-Ravaux M (Biochemical and biophysical research communications, 2018)