A multifunctional, light-activated prochelator inhibits UVA-induced oxidative stress.

Journal Article (Journal Article)

UVA radiation can damage cells and tissues by direct photodamage of biomolecules as well as by initiating metal-catalyzed oxidative stress. In order to alleviate both concerns simultaneously, we synthesized a multifunctional prochelator PC-HAPI (2-((E)-1-(2-isonicotinoylhydrazono)ethyl)phenyl (trans)-3-(2,4-dihydroxyphenyl)acrylate) that contains a trans-(o-hydroxy)cinnamate ester photocleavable protecting group that is cleaved upon UVA exposure to release a coumarin, umbelliferone, and an aroylhydrazone metal chelator, HAPI (N'-[1-(2-hydroxyphenyl)ethyliden]isonicotinoylhydrazide). While the prochelator PC-HAPI exhibits negligible affinity for iron, it responds rapidly to UVA irradiation and converts to an iron-binding chelator that inhibits iron-catalyzed formation of reactive oxygen species and protects cells from UVA damage.

Full Text

Duke Authors

Cited Authors

  • Franks, AT; Wang, Q; Franz, KJ

Published Date

  • November 2015

Published In

Volume / Issue

  • 25 / 21

Start / End Page

  • 4843 - 4847

PubMed ID

  • 26152427

Pubmed Central ID

  • PMC4607636

Electronic International Standard Serial Number (EISSN)

  • 1464-3405

International Standard Serial Number (ISSN)

  • 0960-894X

Digital Object Identifier (DOI)

  • 10.1016/j.bmcl.2015.06.048


  • eng