Brain derived metastatic prostate cancer DU-145 cells are effectively inhibited in vitro by guava (Psidium gujava L.) leaf extracts

Kuan Chou Chen, Chiu Lan Hsieh, Chiung Chi Peng, Hsiu Mei Hsieh-Li, Han-Sun Chiang, Kuan Dar Huang, Robert Y. Peng

Research output: Contribution to journalArticle

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Abstract

The aqueous extract of Psidium guajava L. (PE) inhibited the cancer cell DU-145 in a dose- and time-dependent manner. At 1.0 mg/mL, PE reduced the viability of PCa DU-145 (the androgen independent PCa cells) to 36.1 and 3.59%, respectively after 48 h and 72 h of incubations. The absolute cell viability suppressing capability (VSC)AC could reach 262.5 cells-mL-h/mg on exposure to PE for 72 h, corresponding to the safe ranges, i.e. the percent viability suppressing rates (PVSR) of 2.72 and 2.41 folds for DU-145 comparing to PZ-HPV-7 cells when treated with PE at 0.5 and 1.0 mg/mL respectively for 72 h. In addition, the colony forming capability of DU-145 cells was apparently lowered. The suppressing rates of which reached 8.09 and 5.96 colony/mg/day for D-145 and PZ-HPV-7 cells, respectively within the concentration range of PE at 0.1∼0.25 mg/mL. Cell cycle arrests at G0/G1 phase in both cells were observed by TUNEL assay and flow cytometric analysis, yet more prominently evident in DU-145. In addition, suppression of the matrix metalloproteinases MMP-2 and MMP-9, and the upregulation of active caspase-3 at 0.10 to 1.0 mg/mL in DU-145 were also effected in a dose-dependent manner by PE at 0.25 to 1.0 mg/mL, implicating a potent anti-metastasis power of PE. Conclusively, we ascribe the anticancer activity of PE to its extraordinarily high polyphenolic (165.61 ± 10.39 mg/g) and flavonoid (82.85 ± 0.22 mg/g) contents. Furthermore, PE might be useful for treatment of brain derived metastatic cancers such as DU-145, acting simultaneously as both a chemopreventive and a chemotherapeutic.

Original languageEnglish
Pages (from-to)93-106
Number of pages14
JournalNutrition and Cancer
Volume58
Issue number1
Publication statusPublished - 2007

Fingerprint

Psidium
prostatic neoplasms
leaf extracts
Prostatic Neoplasms
brain
Human papillomavirus 7
Brain
cells
Matrix Metalloproteinases
viability
gelatinase A
Psidium guajava
gelatinase B
Memantine
metalloproteinases
Cell Cycle Resting Phase
caspase-3
dosage
androgens
Matrix Metalloproteinase 2

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Oncology
  • Food Science

Cite this

Brain derived metastatic prostate cancer DU-145 cells are effectively inhibited in vitro by guava (Psidium gujava L.) leaf extracts. / Chen, Kuan Chou; Hsieh, Chiu Lan; Peng, Chiung Chi; Hsieh-Li, Hsiu Mei; Chiang, Han-Sun; Huang, Kuan Dar; Peng, Robert Y.

In: Nutrition and Cancer, Vol. 58, No. 1, 2007, p. 93-106.

Research output: Contribution to journalArticle

Chen, Kuan Chou ; Hsieh, Chiu Lan ; Peng, Chiung Chi ; Hsieh-Li, Hsiu Mei ; Chiang, Han-Sun ; Huang, Kuan Dar ; Peng, Robert Y. / Brain derived metastatic prostate cancer DU-145 cells are effectively inhibited in vitro by guava (Psidium gujava L.) leaf extracts. In: Nutrition and Cancer. 2007 ; Vol. 58, No. 1. pp. 93-106.
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abstract = "The aqueous extract of Psidium guajava L. (PE) inhibited the cancer cell DU-145 in a dose- and time-dependent manner. At 1.0 mg/mL, PE reduced the viability of PCa DU-145 (the androgen independent PCa cells) to 36.1 and 3.59{\%}, respectively after 48 h and 72 h of incubations. The absolute cell viability suppressing capability (VSC)AC could reach 262.5 cells-mL-h/mg on exposure to PE for 72 h, corresponding to the safe ranges, i.e. the percent viability suppressing rates (PVSR) of 2.72 and 2.41 folds for DU-145 comparing to PZ-HPV-7 cells when treated with PE at 0.5 and 1.0 mg/mL respectively for 72 h. In addition, the colony forming capability of DU-145 cells was apparently lowered. The suppressing rates of which reached 8.09 and 5.96 colony/mg/day for D-145 and PZ-HPV-7 cells, respectively within the concentration range of PE at 0.1∼0.25 mg/mL. Cell cycle arrests at G0/G1 phase in both cells were observed by TUNEL assay and flow cytometric analysis, yet more prominently evident in DU-145. In addition, suppression of the matrix metalloproteinases MMP-2 and MMP-9, and the upregulation of active caspase-3 at 0.10 to 1.0 mg/mL in DU-145 were also effected in a dose-dependent manner by PE at 0.25 to 1.0 mg/mL, implicating a potent anti-metastasis power of PE. Conclusively, we ascribe the anticancer activity of PE to its extraordinarily high polyphenolic (165.61 ± 10.39 mg/g) and flavonoid (82.85 ± 0.22 mg/g) contents. Furthermore, PE might be useful for treatment of brain derived metastatic cancers such as DU-145, acting simultaneously as both a chemopreventive and a chemotherapeutic.",
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AU - Chen, Kuan Chou

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AU - Chiang, Han-Sun

AU - Huang, Kuan Dar

AU - Peng, Robert Y.

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