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. 1996 Dec;87(12):1259–1262. doi: 10.1111/j.1349-7006.1996.tb03141.x

Presence in Pieris rapae of Cytotoxic Activity against Human Carcinoma Cells

Kotaro Koyama 1, Keiji Wakabayashi 1,✉, Mitsuko Masutani 1, Kazunori Koiwai 2, Masahiko Watanabe 1, Shigeru Yamazaki 1, Takuo Kono 1, Keizaburo Miki 2, Takashi Sugimura 1
PMCID: PMC5921024  PMID: 9045961

Abstract

Cytotoxic activity in extracts of pupae and adults of various kinds of butterflies and moths was tested in vitro against the human gastric carcinoma cell line, TMK‐1, which was chosen as an example of human carcinoma cells. Among the species examined, cytotoxicity was limited to Pieris rapae, Pieris napi and Pieris brassicae. Activity was found down to a dilution of 1/104, while with the other butterflies and moths no activity was observed, even at 1/102. When the cytotoxicity of the three developmental stages, larvae, pupae and adults, of Pieris rapae was compared, the pupae showed the strongest activity, the IC50 against TMK‐1 cells being at the 1/106 dilution. For larvae and adults, the respective IC50 values were at the 1/105 and 5/105 dilutions. The active principle in the pupae of Pieris rapae was found to be heat‐labile and not extractable with organic solvents, but precipitated with ammonium sulfate and digested by proteases, suggesting that it is a protein. This cytotoxic factor was named pierisin.

Keywords: Cytotoxicity, Gastric carcinoma cell line, Butterfly, Pieris rapae, Pierisin

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