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Hydrazino-Pictet-Spengler Ligation as a Biocompatible Method for the Generation of Stable Protein Conjugates

Agarwal, Paresh, Kudirka, Romas, Albers, Aaron E., Barfield, Robyn M., de Hart, Gregory W., Drake, Penelope M., Jones, Lesley C., Rabuka, David·2013·Bioconjugate Chemistry

Abstract

Aldehyde- and ketone-functionalized biomolecules have found widespread use in biochemical and biotechnological fields. They are typically conjugated with hydrazide or aminooxy nucleophiles under acidic conditions to yield hydrazone or oxime products that are relatively stable, but susceptible to hydrolysis over time. We introduce a new reaction, the hydrazino-Pictet-Spengler (HIPS) ligation, which has two distinct advantages over hydrazone and oxime ligations. First, the HIPS ligation proceeds quickly near neutral pH, allowing for one-step labeling of aldehyde-functionalized proteins under mild conditions. Second, the HIPS ligation product is very stable (>5 days) in human plasma relative to an oxime-linked conjugate (∼1 day), as demonstrated by monitoring protein-fluorophore conjugates by ELISA. Thus, the HIPS ligation exhibits a combination of product stability and speed near neutral pH that is unparalleled by current carbonyl bioconjugation chemistries.

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Metadata

Authors
Agarwal, P., Kudirka, R., Albers, A. E., Barfield, R. M., de Hart, G. W., Drake, P. M., Jones, L. C., & Rabuka, D.
Venue
Bioconjugate Chemistry
Published
2013-06-03
Volume
24
Issue
6
Pages
846-851
ISSN
  • 1043-1802 (ISSN-L)
  • 1520-4812
OpenAlex
W2327630133
Cited by
160
References
0
FWCI
7.98
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Hydrazino-Pictet-Spengler Ligation as a Biocompatible Method for the Generation of Stable Protein Conjugates. https://app.cochat.ai/papers/10.1021/bc400042a
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Agarwal, P., Kudirka, R., Albers, A. E., Barfield, R. M., de Hart, G. W., Drake, P. M., Jones, L. C., & Rabuka, D. (2013). Hydrazino-Pictet-Spengler Ligation as a Biocompatible Method for the Generation of Stable Protein Conjugates. Bioconjugate Chemistry. https://doi.org/10.1021/bc400042a

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