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Basic Sciences

Control of Phenotypic Expression of Cultured B16 Melanoma Cells by Plant Glycosides

Shizuo Odashima, Takahide Ohta, Hiroyuki Kohno, Takeshi Matsuda, Isao Kitagawa, Hiroko Abe and Shigeru Arichi
Shizuo Odashima
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Takahide Ohta
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Hiroyuki Kohno
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Takeshi Matsuda
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Isao Kitagawa
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Hiroko Abe
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Shigeru Arichi
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DOI:  Published June 1985
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Abstract

The effects of two plant glycosides, ginsenosides Rh1 and Rh2, on the growth and differentiation of mouse melanoma (B16) cells in culture were studied. These plant glycosides have a dammarane skeleton resembling a steroid skeleton as an aglycone. Ginsenoside Rh2 inhibits the growth of B16 melanoma cells, causes morphological alterations, and stimulates melanogenesis at high cellular density. When ginsenoside Rh2 was removed after 2 or 6 days of treatment, the growth rate recovered slightly but not completely, during the period of observation (4 days after removal). On the other hand, ginsenoside Rh1 does not inhibit the growth of melanoma cells even at concentrations over 100 µm but stimulates the expression of the melanotic phenotype. Ginsenosides Rh1 and Rh2, possessing a glucose molecule at C-6 and C-3, respectively, have very similar chemical structures, but their effects on B16 melanoma cells differ remarkably. While it appears that the degree of differentiation is inversely related to cell growth, the present observations suggest that the differentiation and growth capacity of this B16 melanoma subline are independent phenotypic expressions.

Footnotes

  • ↵1 Supported by Grant-in-Aid for Cancer Research 58015110 from the Ministry of Education, Science and Culture, Japan.

  • ↵2 To whom requests for reprints should be addressed.

  • Received July 11, 1984.
  • Revision received February 5, 1985.
  • Accepted February 25, 1985.
  • ©1985 American Association for Cancer Research.
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June 1985
Volume 45, Issue 6
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Control of Phenotypic Expression of Cultured B16 Melanoma Cells by Plant Glycosides
Shizuo Odashima, Takahide Ohta, Hiroyuki Kohno, Takeshi Matsuda, Isao Kitagawa, Hiroko Abe and Shigeru Arichi
Cancer Res June 1 1985 (45) (6) 2781-2784;

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Control of Phenotypic Expression of Cultured B16 Melanoma Cells by Plant Glycosides
Shizuo Odashima, Takahide Ohta, Hiroyuki Kohno, Takeshi Matsuda, Isao Kitagawa, Hiroko Abe and Shigeru Arichi
Cancer Res June 1 1985 (45) (6) 2781-2784;
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