Design, synthesis and biological evaluation of 5-aminolaevulinic acid/3-hydroxypyridinone conjugates as potential photodynamic therapeutical agents.

Abstract:

:5-Aminolaevulinic acid (ALA) prodrugs have been widely used in photodynamic therapy (PDT) as precursors to the natural photosensitizer, protoporphyrin IX (PpIX). The main disadvantage of this therapy is that ALA is poorly absorbed by cells due to its high hydrophilicity. In order to improve the therapeutical effect and induce higher yields of PpIX, a range of prodrugs of ALA conjugated to 3-hydroxypyridin-4-ones (HPO) were synthesized. Pharmacokinetic studies indicated that some of the ALA-HPO conjugates are more efficient than ALA for PpIX production in the human breast adenocarcinoma cell line (MDA-MB-468). The intracellular porphyrin fluorescence levels showed good correlation with cellular phototoxicity following light exposure, suggesting the potential application of the ALA-HPO conjugates in photodynamic therapy.

journal_name

Bioorg Med Chem Lett

authors

Zhu CF,Battah S,Kong X,Reeder BJ,Hider RC,Zhou T

doi

10.1016/j.bmcl.2014.12.018

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

558-61

issue

3

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(14)01315-8

journal_volume

25

pub_type

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