Boron enabled bioconjugation chemistries

Abstract

Novel bioconjugation reactions have been heavily pursued for the past two decades. A myriad of conjugation reactions have been developed for labeling molecules of interest in their native context as well as for constructing multifunctional molecular entities or stimuli-responsive materials. A growing cluster of bioconjugation reactions were realized by tapping into the unique properties of boron. As a rare element in human biology, boronic acids and esters exhibit remarkable biocompatibility. A number of organoboron reagents have been evaluated for bioconjugation, targeting the reactivity of either native biomolecules or those incorporating bioorthogonal functional groups. Owing to the dynamic nature of B–O and B–N bond formation, a significant portion of the boron-enabled bioconjugations exhibit rapid reversibility and accordingly have found applications in the development of reversible covalent inhibitors. On the other hand, stable bioconjugations have been developed that display fast kinetics and significantly expand the repertoire of bioorthogonal chemistry. This contribution presents a summary and comparative analysis of the recently developed boron-mediated bioconjugations. Importantly, this article seeks to provide an in-depth discussion of the thermodynamic and kinetic profiles of these boron-enabled bioconjugations, which reveals structure–reactivity relationships and provides guidelines for bioapplications.

Graphical abstract: Boron enabled bioconjugation chemistries

Article information

Article type
Review Article
Submitted
27 Jul 2024
First published
30 Oct 2024
This article is Open Access
Creative Commons BY-NC license

Chem. Soc. Rev., 2024, Advance Article

Boron enabled bioconjugation chemistries

M. Zheng, L. Kong and J. Gao, Chem. Soc. Rev., 2024, Advance Article , DOI: 10.1039/D4CS00750F

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