The Immunological Effect of 8-Methoxypsoralen and UVA Treatment on Murine T-Cell Leukemia

Autor: Ting-Ying Cheng, Rong-Hwa Lin, Fung-Win Shen
Rok vydání: 1996
Předmět:
Zdroj: Photochemistry and Photobiology. 64:594-600
ISSN: 1751-1097
0031-8655
DOI: 10.1111/j.1751-1097.1996.tb03110.x
Popis: 8-Methoxypsoralen (8-MOP) plus long-wavelength UV radiation (UVA, 320-400 nm) have been used to treat various diseases such as cutaneous T-cell lymphoma, systemic scleroderma, rheumatoid arthritis and rejection of heart transplants. However, the immunological mechanism of this treatment remains unknown. In this report, we investigated the effect of 8-MOP/UVA on the modulation of the immunogenicity of a T-cell leukemia cell line (RL male 1 cells). The results demonstrated that the stimulator function of the in vitro 8-MOP/UVA-treated RL male 1 cells was enhanced in both RL male 1-specific allogeneic and syngeneic immune responses. Furthermore, the enhancement of the immunogenicity of the 8-MOP/UVA-treated RL male 1 cells was found to be strongly associated with the increase of intercellular adhesion molecule-1 expression on these 8-MOP/UVA-treated tumor cells. Therefore, our findings suggested that the alteration of the expression of the immune-related cell surface molecules might be an important effect of 8-MOP/UVA treatment on the elevation of the immunogenicity of the 8-MOP/UVA-treated tumor cells.
Databáze: OpenAIRE