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Probing the cysteine-34 position of endogenous serum albumin with thiol-binding doxorubicin derivatives. Improved efficacy of an acid-sensitive doxorubicin derivative with specific albumin-binding properties compared to that of the parent compound.

Abstract：

:We have recently proposed a macromolecular prodrug strategy for improved cancer chemotherapy based on two features (Kratz, F.; et al. J. Med. Chem 2000, 43, 1253-1256.): (a) rapid and selective binding of thiol-reactive prodrugs to the cysteine-34 position of endogenous albumin after intravenous administration and (b) release of the albumin-bound drug in the acidic environment at the tumor site due to the incorporation of an acid-sensitive bond between the drug and the carrier. To investigate this therapeutic strategy in greater depth, four (maleinimidoalkanoyl)hydrazone derivatives of doxorubicin were synthesized differing in the length of the aliphatic spacer (1, -(CH(2))(2)-; 2, -(CH(2))(3)-; 3, -(CH(2))(5)-; 4, -(CH(2))(7)-). The albumin-binding doxorubicin prodrugs, especially the (6-maleimidocaproyl)hydrazone derivative of doxorubicin (3), are rapidly and selectively bound to the cysteine-34 position of endogenous albumin. 3 was distinctly superior to the parent compound doxorubicin in three animal tumor models (RENCA, MDA-MB 435, and MCF-7) with respect to antitumor efficacy and toxicity.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Kratz F,Warnecke A,Scheuermann K,Stockmar C,Schwab J,Lazar P,Drückes P,Esser N,Drevs J,Rognan D,Bissantz C,Hinderling C,Folkers G,Fichtner I,Unger C

doi

10.1021/jm020276c

keywords:

subject

Has Abstract

pub_date

2002-12-05 00:00:00

pages

5523-33

issue

25

eissn

0022-2623

issn

1520-4804

pii

jm020276c

journal_volume

45

pub_type

杂志文章

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