Effects of high and low level 1265 nm laser irradiation on HCT116 cancer cells

Anna Khokhlova, Igor Zolotovskii, Evgeniia Pogodina, Yuri Saenko, Dmitrii Stoliarov, Svetlana Vorsina, Andrei Fotiadi, Daria Liamina, Sergei Sokolovski, Edik Rafailov, Michael R. Hamblin (Editor), James D. Carroll (Editor), Praveen Arany (Editor)

Research output: Contribution to journalConference articlepeer-review


The mechanism responsible for the oxidative stress due to photobiomodulation induced by 1265 nm laser is still unclear. Mitochondria are assumed to be the most probable acceptors of the 1265 nm laser irradiation. We study oxidative stress, mitochondrial potential, GSH, cell viability, DNA damage. We demonstrated that narrowband (highcoherent) and wideband lasers employed at the doses of 9.45 and 66.6-400 J/cm2, respectively, induce a dose-dependent cell death, increase ROS level, disturb mitochondrial functioning and can damage DNA. Thus, the 1265 nm lasers can affect the HCT116 cells through mitochondrial damage. Energy density increase contributes to cell damaging without heating effects.
Original languageEnglish
Article number108610L
JournalProceedings of SPIE - International Society for Optical Engineering
Publication statusPublished - 7 Mar 2019
EventMechanisms of Photobiomodulation Therapy XIV - San Francisco, United States
Duration: 2 Feb 20197 Feb 2019

Bibliographical note

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  • 1265 nm laser irradiation
  • DNA damage
  • cancer cells
  • near-infrared lasers
  • oxidative stress
  • photobiomodulation therapy
  • reactive oxygen species
  • singlet oxygen


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