Light-induced killing of carcinoma cells

Details Light-induced killing of carcinoma cells Light-induced killing of carcinoma cells

1985-04-08

1987-03-24

Cohen, Lee S.

Surgery

Truss

Pad

A61N 500

Patent

active

046517391

ABSTRACT:
A method of killing carcinoma cells associated normal cells using light of a predetermined wavelength. The method includes contacting the cells with a chromophor at a given concentration. The chromophor is positively charged and sufficiently lipophilic to be taken up by the mitochondria of the carcinoma cells and is retained substantially longer in the mitochondria of carcinoma cells than in normal cell mitochondria; or it may be taken up in greater quantity by the carcinoma cells than by the normal cells. The chromophor must also have a therapeutic index for light-induced cell killing of at least 500 for light of the predetermined wavelength, and has a therapeutic ratio for light-induced killing of at least 50 for light of said pre-determined wavelength. The cells are then exposed to light of this wavelength.

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