伪金丝桃素(PH)和金丝桃素(H)是贯叶金丝桃 Hypericum perforatum 中的光敏性植物色素。H 对肿瘤细胞株有细胞毒活性及诱导其凋亡的作用。PH 在该植物中的含量高于 H,但其诱导细胞凋亡的作用未曾研究。作者比较了 PH 与 H 对体外培养的人 T-淋巴细胞性白血病细胞株 Jurkat 的光毒性及诱 Pseudohypericin (PH) and hypericin (H) are photosensitive photophytes in Hypericum perforatum. H has cytotoxic activity and induces apoptosis in tumor cell lines. The content of PH in this plant is higher than H, but its effect of inducing apoptosis has not been studied. The authors compared the phototoxicity and sensitization of PH and H against Jurkat, an in vitro cultured human T-lymphocytic leukemia cell line.