Molecular Docking-Based Design and Development of a Highly Selective Probe Substrate for UDP-glucuronosyltransferase 1A10

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Juvonen , R O , Rauhamäki , S , Kortet , S , Niinivehmas , S , Troberg , J , Petsalo , A , Huuskonen , J , Raunio , H , Finel , M & Pentikäinen , O T 2018 , ' Molecular Docking-Based Design and Development of a Highly Selective Probe Substrate for UDP-glucuronosyltransferase 1A10 ' , Molecular Pharmaceutics , vol. 15 , no. 3 , pp. 923-933 . https://doi.org/10.1021/acs.molpharmaceut.7b00871

Title: Molecular Docking-Based Design and Development of a Highly Selective Probe Substrate for UDP-glucuronosyltransferase 1A10
Author: Juvonen, Risto O.; Rauhamäki, Sanna; Kortet, Sami; Niinivehmas, Sanna; Troberg, Johanna; Petsalo, Aleksanteri; Huuskonen, Juhani; Raunio, Hannu; Finel, Moshe; Pentikäinen, Olli T.
Contributor: University of Helsinki, Faculty of Pharmacy
University of Helsinki, Faculty of Pharmacy
Date: 2018-03
Language: eng
Number of pages: 11
Belongs to series: Molecular Pharmaceutics
ISSN: 1543-8384
URI: http://hdl.handle.net/10138/301183
Abstract: Intestinal and hepatic glucuronidation by the UDP-glucuronosyltransferases (UGTs) greatly affect the bioavailability of phenolic compounds. UGT1A10 catalyzes glucuronidation reactions in the intestine, but not in the liver. Here, our aim was to develop selective, fluorescent substrates to easily elucidate UGT1A10 function. To this end, homology models were constructed and used to design new substrates, and subsequently, six novel C3-substituted (4-fluorophenyl, 4-hydroxyphenyl, 4-methoxyphenyl, 4-(dimethylamino)phenyl, 4-methylphenyl, or triazole) 7-hydroxycoumarin derivatives were synthesized from inexpensive starting materials. All tested compounds could be glucuronidated to nonfluorescent glucuronides by UGT1A10, four of them highly selectively by this enzyme. A new UGT1A10 mutant, 1A10-H210M, was prepared on the basis of the newly constructed model. Glucuronidation kinetics of the new compounds, in both wild-type and mutant UGT1A10 enzymes, revealed variable effects of the mutation. All six new C3-substituted 7-hydroxycoumarins were glucuronidated faster by human intestine than by liver microsomes, supporting the results obtained with recombinant UGTs. The most selective 4(dimethylamino)phenyl and triazole C3-substituted 7-hydroxycoumarins could be very useful substrates in studying the function and expression of the human UGT1A10.
Subject: 7-hydroxycoumarin derivative
UDP-glucuronosyltransferase
in silico
fluorescence
drug metabolism
DRUG-METABOLISM
FLUORESCENT-PROBE
ORAL BIOAVAILABILITY
CRYSTAL-STRUCTURE
GLUCURONIDATION
ENZYME
XENOBIOTICS
EXPRESSION
AFFINITY
UGT1A10
317 Pharmacy
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