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Proceedings Paper

Efficiency of photodynamic therapy using indocyanine green and infrared light on MCF-7 breast cancer cells in vitro
Author(s): Mustafa Kemal Ruhi; Ayşe Ak; Murat Gülsoy
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Paper Abstract

Cancer is one of the main reasons of death in all around the world. The main treatments of cancer include surgical intervention, radiation therapy and chemotherapy. These treatments can be applied separately or in a combined manner. Another therapeutic method that is still being researched and recently has started to be used in clinical applications is Photodynamic Therapy (PDT). Most photosensitizers currently being investigated are sensitive to red light. However, it is known that infrared light has a better penetration into the skin or tissue. Indocyanine Green (ICG), which is used in this study, is sensitive to infrared light. The aim of this in vitro study is to investigate the effect of PDT on breast cancer cells by using different doses of ICG and infrared light irradiation. 25, 50 and 100 μM ICG concentrations and 25 and 50 J/cm2 laser energy doses were applied to MCF-7 cell lines. MTT analyses were performed on 24, 48 and 72 hours following the treatments. As a result, inhibition of cell viability was observed in a time and dose dependent manner. It can be concluded that ICG-PDT application is a good alternative to conventional radiation therapy and chemotherapy for breast cancer treatment.

Paper Details

Date Published: 1 March 2016
PDF: 8 pages
Proc. SPIE 9694, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XXV, 96940Q (1 March 2016); doi: 10.1117/12.2214308
Show Author Affiliations
Mustafa Kemal Ruhi, Bogaziçi Univ. (Turkey)
Ayşe Ak, Erzincan Univ. (Turkey)
Murat Gülsoy, Bogaziçi Univ. (Turkey)


Published in SPIE Proceedings Vol. 9694:
Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XXV
David H. Kessel; Tayyaba Hasan, Editor(s)

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