Improved photochemotherapy of malignant cells with daunomycin and the KTP laser

Marcos B. Paiva, Romaine E. Saxton, Ines P. Graeber, Neva Jongewaard, Adrien Eshraghi, Michael J. Suh, Woo H. Paek, Dan J. Castro

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Laser photochemotherapy of malignancies may become an effective palliative treatment for advanced had and neck cancer using light-sensitive, chemotherapeutic drugs activated in tumors via interstitial laser fiberoptics. Previously, it was reported that cultured human P3 squamous cells incubated 2 hours with daunomycin (Dn) exhibited tenfold enhanced cytotoxicity after exposure to argon laser light at 514 nm. This short-term uptake leads to drug localization in cytoplasmic and membrane sites prior to nuclear accumulation and daunomycin topoisomerase inhibition. In the current study phototoxicity of Dn-sensitized human cancer cells was tested using broadspectrum white light compared to monochromatic green-wavelength light. Drug uptake and laser energy levels were optimized for maximum synergy. To test light-enhanced chemotherapy in vitro, the kinetics of cell uptake and toxicity of daunomycin was measured at 1, 2, and 5 μg/ml in three human tumor cell lines: P3 squamous-cell carcinoma, M26 melanoma, and TE671 fibrosarcoma. After 2 hr Dn uptake, all cell lines were tested for phototherapy response by exposure to 300- to 900-nm visible light from a xenon lamp or monochromatic 532-nm green light from a KTP laser. When the KTP laser output was varied from 0 to 120 Joules in Dn-sensitized tumor cells, a linear phototherapy response was seen with energy as low as 12 J inducing drug phototoxicity. These results provide evidence that daunomycin cytotoxicity is enhanced when exposed to 532-nm laser illumination in the three tumor types tested and confirm that the response is related to both energy level and drug dose.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalLasers in Surgery and Medicine
Volume23
Issue number1
DOIs
StatePublished - Aug 5 1998
Externally publishedYes

Fingerprint

Daunorubicin
Solid-State Lasers
Photochemotherapy
Lasers
Light
Phototoxic Dermatitis
Methyl Green
Phototherapy
Pharmaceutical Preparations
Neoplasms
Xenon
Argon
Fibrosarcoma
Head and Neck Neoplasms
Tumor Cell Line
Lighting
Palliative Care
Squamous Cell Carcinoma
Melanoma
Epithelial Cells

Keywords

  • Daunomycin
  • KTP laser
  • Photochemotherapy

ASJC Scopus subject areas

  • Surgery

Cite this

Improved photochemotherapy of malignant cells with daunomycin and the KTP laser. / Paiva, Marcos B.; Saxton, Romaine E.; Graeber, Ines P.; Jongewaard, Neva; Eshraghi, Adrien; Suh, Michael J.; Paek, Woo H.; Castro, Dan J.

In: Lasers in Surgery and Medicine, Vol. 23, No. 1, 05.08.1998, p. 33-39.

Research output: Contribution to journalArticle

Paiva, Marcos B. ; Saxton, Romaine E. ; Graeber, Ines P. ; Jongewaard, Neva ; Eshraghi, Adrien ; Suh, Michael J. ; Paek, Woo H. ; Castro, Dan J. / Improved photochemotherapy of malignant cells with daunomycin and the KTP laser. In: Lasers in Surgery and Medicine. 1998 ; Vol. 23, No. 1. pp. 33-39.
@article{fa4fb187993c4d38befaf7100fdf7636,
title = "Improved photochemotherapy of malignant cells with daunomycin and the KTP laser",
abstract = "Laser photochemotherapy of malignancies may become an effective palliative treatment for advanced had and neck cancer using light-sensitive, chemotherapeutic drugs activated in tumors via interstitial laser fiberoptics. Previously, it was reported that cultured human P3 squamous cells incubated 2 hours with daunomycin (Dn) exhibited tenfold enhanced cytotoxicity after exposure to argon laser light at 514 nm. This short-term uptake leads to drug localization in cytoplasmic and membrane sites prior to nuclear accumulation and daunomycin topoisomerase inhibition. In the current study phototoxicity of Dn-sensitized human cancer cells was tested using broadspectrum white light compared to monochromatic green-wavelength light. Drug uptake and laser energy levels were optimized for maximum synergy. To test light-enhanced chemotherapy in vitro, the kinetics of cell uptake and toxicity of daunomycin was measured at 1, 2, and 5 μg/ml in three human tumor cell lines: P3 squamous-cell carcinoma, M26 melanoma, and TE671 fibrosarcoma. After 2 hr Dn uptake, all cell lines were tested for phototherapy response by exposure to 300- to 900-nm visible light from a xenon lamp or monochromatic 532-nm green light from a KTP laser. When the KTP laser output was varied from 0 to 120 Joules in Dn-sensitized tumor cells, a linear phototherapy response was seen with energy as low as 12 J inducing drug phototoxicity. These results provide evidence that daunomycin cytotoxicity is enhanced when exposed to 532-nm laser illumination in the three tumor types tested and confirm that the response is related to both energy level and drug dose.",
keywords = "Daunomycin, KTP laser, Photochemotherapy",
author = "Paiva, {Marcos B.} and Saxton, {Romaine E.} and Graeber, {Ines P.} and Neva Jongewaard and Adrien Eshraghi and Suh, {Michael J.} and Paek, {Woo H.} and Castro, {Dan J.}",
year = "1998",
month = "8",
day = "5",
doi = "10.1002/(SICI)1096-9101(1998)23:1<33::AID-LSM5>3.0.CO;2-X",
language = "English",
volume = "23",
pages = "33--39",
journal = "Lasers in Surgery and Medicine",
issn = "0196-8092",
publisher = "Wiley-Liss Inc.",
number = "1",

}

TY - JOUR

T1 - Improved photochemotherapy of malignant cells with daunomycin and the KTP laser

AU - Paiva, Marcos B.

AU - Saxton, Romaine E.

AU - Graeber, Ines P.

AU - Jongewaard, Neva

AU - Eshraghi, Adrien

AU - Suh, Michael J.

AU - Paek, Woo H.

AU - Castro, Dan J.

PY - 1998/8/5

Y1 - 1998/8/5

N2 - Laser photochemotherapy of malignancies may become an effective palliative treatment for advanced had and neck cancer using light-sensitive, chemotherapeutic drugs activated in tumors via interstitial laser fiberoptics. Previously, it was reported that cultured human P3 squamous cells incubated 2 hours with daunomycin (Dn) exhibited tenfold enhanced cytotoxicity after exposure to argon laser light at 514 nm. This short-term uptake leads to drug localization in cytoplasmic and membrane sites prior to nuclear accumulation and daunomycin topoisomerase inhibition. In the current study phototoxicity of Dn-sensitized human cancer cells was tested using broadspectrum white light compared to monochromatic green-wavelength light. Drug uptake and laser energy levels were optimized for maximum synergy. To test light-enhanced chemotherapy in vitro, the kinetics of cell uptake and toxicity of daunomycin was measured at 1, 2, and 5 μg/ml in three human tumor cell lines: P3 squamous-cell carcinoma, M26 melanoma, and TE671 fibrosarcoma. After 2 hr Dn uptake, all cell lines were tested for phototherapy response by exposure to 300- to 900-nm visible light from a xenon lamp or monochromatic 532-nm green light from a KTP laser. When the KTP laser output was varied from 0 to 120 Joules in Dn-sensitized tumor cells, a linear phototherapy response was seen with energy as low as 12 J inducing drug phototoxicity. These results provide evidence that daunomycin cytotoxicity is enhanced when exposed to 532-nm laser illumination in the three tumor types tested and confirm that the response is related to both energy level and drug dose.

AB - Laser photochemotherapy of malignancies may become an effective palliative treatment for advanced had and neck cancer using light-sensitive, chemotherapeutic drugs activated in tumors via interstitial laser fiberoptics. Previously, it was reported that cultured human P3 squamous cells incubated 2 hours with daunomycin (Dn) exhibited tenfold enhanced cytotoxicity after exposure to argon laser light at 514 nm. This short-term uptake leads to drug localization in cytoplasmic and membrane sites prior to nuclear accumulation and daunomycin topoisomerase inhibition. In the current study phototoxicity of Dn-sensitized human cancer cells was tested using broadspectrum white light compared to monochromatic green-wavelength light. Drug uptake and laser energy levels were optimized for maximum synergy. To test light-enhanced chemotherapy in vitro, the kinetics of cell uptake and toxicity of daunomycin was measured at 1, 2, and 5 μg/ml in three human tumor cell lines: P3 squamous-cell carcinoma, M26 melanoma, and TE671 fibrosarcoma. After 2 hr Dn uptake, all cell lines were tested for phototherapy response by exposure to 300- to 900-nm visible light from a xenon lamp or monochromatic 532-nm green light from a KTP laser. When the KTP laser output was varied from 0 to 120 Joules in Dn-sensitized tumor cells, a linear phototherapy response was seen with energy as low as 12 J inducing drug phototoxicity. These results provide evidence that daunomycin cytotoxicity is enhanced when exposed to 532-nm laser illumination in the three tumor types tested and confirm that the response is related to both energy level and drug dose.

KW - Daunomycin

KW - KTP laser

KW - Photochemotherapy

UR - http://www.scopus.com/inward/record.url?scp=0031815361&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031815361&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1096-9101(1998)23:1<33::AID-LSM5>3.0.CO;2-X

DO - 10.1002/(SICI)1096-9101(1998)23:1<33::AID-LSM5>3.0.CO;2-X

M3 - Article

C2 - 9694148

AN - SCOPUS:0031815361

VL - 23

SP - 33

EP - 39

JO - Lasers in Surgery and Medicine

JF - Lasers in Surgery and Medicine

SN - 0196-8092

IS - 1

ER -