Cleavable Linkers
Cleavable linkers are specialized chemical linkers designed to release drugs, probes, or biomolecules under specific biological conditions. Widely used in ADCs, targeted drug delivery, and bioconjugation, cleavable PEG linkers help improve targeting efficiency and reduce off-target toxicity. Common types include enzyme-sensitive peptide linkers, redox-responsive disulfide linkers, and ROS-responsive diselenide cleavable linkers for controlled intracellular payload release.
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Enzyme-Sensitive Peptide Linkers
Enzyme-sensitive peptide linkers are widely used in antibody-drug conjugates (ADCs) and targeted drug delivery systems. These cleavable linkers are designed to remain stable in systemic circulation while undergoing selective enzymatic cleavage within tumor or intracellular environments, enabling controlled payload release and enhanced therapeutic specificity.
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Redox-Responsive Linkers
Redox-responsive linkers are cleavable linkers designed to release therapeutic payloads in reducing or reactive oxygen species (ROS)-rich intracellular environments. Common types include glutathione-responsive disulfide linkers and ROS-sensitive diselenide linkers, which are widely used in ADC development, PEGylation, targeted drug delivery, and stimulus-responsive bioconjugation systems.
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