Induction of apoptosis by hydrolyzable tannins from Eugenia jambos L. on human leukemia cells

Ling Ling Yang, Chih Ying Lee, Kun Ying Yen

研究成果: 雜誌貢獻文章

105 引文 斯高帕斯(Scopus)

摘要

Eugenia jambos L. (Myrtaceae) is an antipyretic and anti-inflammatory herb of Asian folk medicine. A 70% acetone extract exerted the strongest cytotoxic effects on human leukemia cells (HL-60) from a preliminary screening of 15 plants. The cytotoxic principles were separated by bio-assay-guided fractionation to HL-60 cells; two hydrolyzable tannins (1-O-galloyl castalagin and casuarinin) were isolated from the 70% acetone extract. All significantly inhibited human promyelocytic leukemia cell line HL-60 and showed less cytotoxicity to human adenocarcinoma cell line SK-HEP-1 and normal cell lines of human lymphocytes and Chang liver cells. Thus, these compounds were exhibited the dose-dependent manner in HL-60 cells and the IC50 were 10.8 and 12.5 μM, respectively. Flow cytometric analysis demonstrated the presence of apoptotic cells with low DNA content, a decrease of cell population at G2/M phase, and a concomitant increase of cell population at G1 phase. The apoptosis induced by these two compounds was also demonstrated by DNA fragmentation assay and microscopic observation. These results suggest that the cytotoxic mechanism of both antitumor principle constituents might be the induction of apoptosis in HL-60 cells. Copyright (C) 2000 Elsevier Science Ireland Ltd.
原文英語
頁(從 - 到)65-75
頁數11
期刊Cancer Letters
157
發行號1
DOIs
出版狀態已發佈 - 八月 31 2000

    指紋

ASJC Scopus subject areas

  • Cancer Research
  • Molecular Biology
  • Oncology

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