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In vivo biotransformations of antibody-drug conjugates

L Nathan Tumey1, Brian Rago2, Xiaogang Han2

  • 1Worldwide Medicinal Chemistry, Pfizer, Inc., Eastern Point Road, Groton CT 06340, USA.

Bioanalysis
|July 31, 2015
PubMed

Insights

Antibody-drug conjugates (ADCs) offer targeted cancer treatment. Understanding ADC biotransformation is crucial for optimizing efficacy and minimizing toxicity during drug development.

Area of Science:

  • Bioconjugation Chemistry
  • Pharmacology
  • Analytical Chemistry

Background:

  • Antibody-drug conjugates (ADCs) are promising cancer therapeutics due to their targeted delivery of potent drugs.
  • Ensuring the structural integrity of ADCs, including the linker, payload, and conjugation site, is vital for efficacy and safety.
  • The complex nature of ADCs presents significant analytical challenges for in vivo characterization.

Purpose of the Study:

  • To provide a comprehensive overview of biotransformation events affecting antibody-drug conjugates.
  • To highlight the importance of understanding these transformations for ADC design and optimization.
  • To address the analytical challenges in studying ADC biotransformation in vivo.

Main Methods:

  • Literature review of recent studies on ADC biotransformation.
  • Analysis of various biotransformation pathways and their impact on ADC components.
  • Discussion of analytical techniques used to elucidate these events.

Main Results:

  • Identification and categorization of diverse biotransformation pathways for ADCs.
  • Demonstration of how biotransformation impacts linker stability, payload release, and overall ADC structure.
  • Elucidation of key metabolic fates of ADCs in biological systems.

Conclusions:

  • A deep understanding of ADC biotransformation is essential for successful drug development.
  • Characterizing biotransformation events aids in maximizing therapeutic efficacy and minimizing off-target toxicity.
  • Further analytical advancements are needed to fully interrogate ADC behavior in vivo.

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