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Maloney R, Buuh ZY, Zhao Y, Wang RE
Site-specific antibody fragment conjugates for targeted imaging
Methods Enzymol (2020) 638:295-320.
Abstract
This work details the use of amber suppression-mediated genetic incorporation of unnatural amino acids (UAAs), specifically p-azido-l-phenylalanine (pAzF) and p-acetyl-l-phenylalanine (pAcF), to develop site-specifically labeled antibody Fab fragments. These antibody fragment conjugates represent a novel class of imaging agents with optimal stability, efficacy, and pharmacological properties, which have demonstrated promising potential for probing and understanding the in vivo bio-distributions of protein targets of interest. This chapter provides general guidelines for preparing these Fab conjugates, and details of follow-up bioassays such as single-agent based positron emission tomography (PET) imaging of immune-checkpoint protein PD-L1, and the use of GCN4-mediated switchable antibody conjugates for near-infrared fluorescent imaging of cancer-related biomarkers.
Note
Publication Date: 2020-01-01.
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Last updated on Friday, August 07, 2020