The conjugates of gold nanorods and chlorin e6 for enhancing the fluorescence detection and photodynamic therapy of cancers

Xiao Huang, Xue Jiao Tian, Wu Li Yang, Benjamin Ehrenberg, Ji Yao Chen

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Gold nanorods (AuNRs) were conjugated with chlorin e6 (Ce6), a commonly used photosensitizer, to form AuNRs-Ce6 by electrostatic binding. Due to the strong surface plasmon resonance coupling, the fluorescence of conjugated Ce6 was enhanced 3-fold and the production of singlet oxygen was increased 1.4-fold. AuNRs-Ce6 were taken up by the HeLa and KB cell lines more easily than free Ce6, enhancing the intracellular delivery of Ce6. The increased cellular amount of Ce6 leads to a 3-fold more efficient photodynamic killing of these two cell lines. This demonstrates the potential of this approach to improve photodynamic detection and therapy of cancers.

Original languageEnglish
Pages (from-to)15727-15733
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number38
DOIs
StatePublished - 14 Oct 2013

Funding

FundersFunder number
National Natural Science Foundation of China11074053, 31170802

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