Direct imaging of singlet oxygen luminescence generated in blood vessels during photodynamic therapy

Lisheng Lin, Huiyun Lin, Defu Chen, Longchao Chen, Min Wang, Shusen Xie, Ying Gu, Brian C. Wilson, Buhong Li

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Abstract

Singlet oxygen (1O2) is commonly recognized to be a major phototoxic component for inducing the biological damage during photodynamic therapy (PDT). In this study, a novel configuration of a thermoelectrically-cooled near-infrared sensitive InGaAs camera was developed for imaging of photodynamically-generated 1O2 luminescence. The validation of 1O2 luminescence images for solution samples was performed with the model photosensitizer Rose Bengal (RB). Images of 1O2 luminescence generated in blood vessels in vivo in a well-controlled dorsal skinfold window chamber model were also recorded during PDT. This study demonstrated the capacity of the newly-developed imaging system for imaging of 1O2 luminescence, and the first reported images of 1O2 luminescence in blood vessels in vivo. This system has potential for elucidating the mechanisms of vascular targeted PDT.

Original languageEnglish
Title of host publicationBiophotonics
Subtitle of host publicationPhotonic Solutions for Better Health Care IV
PublisherSPIE
ISBN (Print)9781628410778
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventBiophotonics: Photonic Solutions for Better Health Care IV - Brussels, Belgium
Duration: 14 Apr 201417 Apr 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9129
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceBiophotonics: Photonic Solutions for Better Health Care IV
Country/TerritoryBelgium
CityBrussels
Period14/04/1417/04/14

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Lin, L., Lin, H., Chen, D., Chen, L., Wang, M., Xie, S., Gu, Y., Wilson, B. C., & Li, B. (2014). Direct imaging of singlet oxygen luminescence generated in blood vessels during photodynamic therapy. In Biophotonics: Photonic Solutions for Better Health Care IV Article 912920 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9129). SPIE. https://doi.org/10.1117/12.2052033