Protein degradation is pivotal for all biochemical aspects of cellular function. In mammalian cells, protein degradation is mediated mainly by the ubiquitin proteasome system (UPS) and the autophagic-lysosomal system (ALS). Over the last two decades, different types of targeted protein degradation approaches have been developed including proteolysis targeting chimeras (PROTACs) and lysosome targeting chimeras (LYTACs), which employ the UPS to degrade intracellular proteins and the ALS to degrade extracellular and membrane proteins respectively. Nevertheless, current targeted membrane protein degradation approaches face some inherent challenges including limited target protein degradation efficacy and cell type specific applicability. Herein, we highlight a recent development of novel targeted membrane protein degradation modalities that exhibit wide-applicability and high protein degradation efficiency. These novel membrane protein degraders hold tremendous promise as new pharmacological and biochemical tools in targeting membrane and secretory proteins for lysosomal degradation.
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