Propargyl-PEG3-acid is a non-cleavable (3 unit PEG) ADC linker and also a PEG-based PROTAC linker that can be used to synthesis 6-OHDA-PEG3-yne. 6-OHDA-PEG3-yne contains 6-OHDA and Propargyl-PEG3-acid[1].
ADCs are comprised of an antibody to which is attached an ADC cytotoxin through an ADC linker.PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.
[1]. Farzam A, et al. A functionalized hydroxydopamine quinone links thiol modification to neuronal cell death. Redox Biol. 2020 Jan;28:101377. [2]. Albone, Earl F, et al. ERIBULIN-BASED ANTIBODY-DRUG CONJUGATES AND METHODS OF USE. Patent. 20170252458.