Homogeneous antibody fragment conjugation by disulfide bridging introduces ‘spinostics’

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Homogeneous antibody fragment conjugation by disulfide bridging introduces ‘spinostics'

A major obstacle to the efficient production of antibody conjugates for therapy and diagnosis is the non-ideal performance of commonly used chemical methods for the attachment of effector-molecules to the antibody of interest. Here we demonstrate that this limitation can be simply addressed using 3,4-substituted maleimides to bridge and thus functionalize disulfide bonds to generate homogeneous...

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Homogeneous Bispecifics by Disulfide Bridging

We report on a chemical platform to generate site-specific, homogeneous, antibody-antibody conjugates by targeting and bridging disulfide bonds. A bispecific antibody construct was produced in good yield through simple reduction and bridging of antibody fragment disulfide bonds, using a readily synthesized bis-dibromomaleimide cross-linker. Binding activity of antibodies was maintained, and in ...

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Acid-cleavable thiomaleamic acid linker for homogeneous antibody–drug conjugation† †Electronic supplementary information (ESI) available: 1H and 13C spectra for all novel compounds, and ES-MS spectra for all reactions with proteins described herein. See DOI: 10.1039/c3cc45220dClick here for additional data file.

In this communication we describe a novel acid-cleavable linker strategy for antibody-drug conjugation. Functional disulfide bridging of the single interchain disulfide bond of a trastuzumab Fab fragment yields a homogeneous antibody-drug conjugate bearing a thiomaleamic acid linker. This linker is stable at physiological pH and temperature, but quantitatively cleaves at lysosomal pH to release...

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Dissecting the Machinery That Introduces Disulfide Bonds in Pseudomonas aeruginosa

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ژورنال

عنوان ژورنال: Scientific Reports

سال: 2013

ISSN: 2045-2322

DOI: 10.1038/srep01525