The effect of photochemotherapy with 4,4',6 trimethylangelicin on murine cutaneous immune cells.

Alcalay, J; Dall'Acqua, F; Kripke, M L · Br J Dermatol · 1990

basic_science · Level V

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Abstract

The effect of photochemotherapy with 4,4',6 trimethylangelicin (TMA), a new monofunctional furocoumarin with a high antiproliferative activity, was studied on murine dendritic epidermal cells. Female mice (C3H/HeN[MTV-]) were treated topically with the drug three times a week for 4 consecutive weeks followed each time by 1 J/cm2 of UVA radiation. At the end of the treatment almost total depletion of ATPase+, Ia+ and Thy-1+ dendritic epidermal cells was observed, associated with marked hyperpigmentation but no gross or microscopic phototoxicity. Although 4,4',6 TMA is not phototoxic in mice, it affects the cutaneous immune cells.

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