Enzyme Cleavable Linkers (Cleave Motif)
There are specific enzymes in the intracellular lysosomes and tumor microenvironment that can selectively cleave linkers. For example, cathepsins in lysosomes can hydrolyze peptide bonds, such as dipeptide or tetrapeptide linkers. Glycosidases that hydrolyze β-glucuronide and β-galactosidase, phosphatases that hydrolyze pyrophosphate and pyrophosphate, and sulfatases that hydrolyze sulfates.