Aptamer Drug Conjugates: A Novel Targeted Delivery Platform for Oncology
Targeted therapy modality in which aptamers replace mAbs in drug conjugates
Have target specificity and affinity on par with mAbs
Can be selected for inhibitory, stimulatory, or no biological activity
Support receptor-mediated internalization
Different aptamers may be joined to form bi-specific therapeutic agents
Streamlined manufacturing/analytical chemistry approach
Lower COGS
Shortened CMC development lead times
Site-specific conjugation using NHS-, thiol or Click chemistry
Constant 1:1 stoichiometry of targeting and payload moieties
On equimolar basis, more payload for ApDC than ADC
MW of aptamer is between 10,000 to 15,000
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