HBpep-SA is a cell membrane-permeable peptide condensate that phase separates to form stable droplets at pH values below 6.5. HBpep-SA is able to directly and efficiently deliver a variety of macromolecules, ranging from therapeutic peptides as small as 726 Da to large enzymes as large as 430 kDa, and the loaded condensates remain stable under near-physiological and serum conditions until internalized by cells. HBpep-SA can be used for intracellular delivery of large numbers of macromolecules and as a vector for mRNA-based vaccines.
References:
[1]. Sun Y, et al. Phase-separating peptides for direct cytosolic delivery and redox-activated release of macromolecular therapeutics. Nat Chem. 2022 Mar;14(3):274-283.