plant-derived mina-05 inhibits human prostate cancer proliferation in vitro and lymph node spread in vivo
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ID: 153190
2007
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Abstract
Few treatment options exist for metastatic prostate cancer (PC) that becomes hormone refractory (HRPC). In vitro, plant-derived MINA-05 caused dose-dependent decreases in cell numbers in HRPC cell lines LNCaPC4-2B and PC-3, and in androgen-sensitive LNCaP-FGC, DuCaP, and LAPC-4, by WST-1 assay. MINA-05 pretreatment significantly decreased clonogenic survival in agar and on plastic at 1 × and 2 × IC50 for PC-3 (P < .05 and P < .001, respectively), and at 1/2 ×, 1 ×, and 2 × IC50 for LNCaP-FGC cells (P < .001). MINA-05 also induced G2M arrest of LNCaP-FGC and PC-3 cells (by flow cytometry) and caused some apoptosis in LNCaPFGC (sub-G1, peak on flow, expression of activated caspase-3) but not in PC-3 cells. Western blotting indicated that these cell cycle changes were associated with decreased levels of regulatory proteins cyclin B1 and cdc25C. MINA-05 given daily by gavage for 39 days did not diminish primary orthotopic PC-3 growth in nude mice, but decreased the extent of lymph node invasion at higher doses. We conclude that MINA-05 induces G2M arrest, inhibits cell growth, reduces PC cell re-growth in vitro, and reduces lymph node invasion after orthotopic PC-3 cell implantation in vivo. It has potential as an adjuvant treatment for patients with PC.
| Reference Key |
vandyke2007neoplasia:plant-derived
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|---|---|
| Authors | ;Kate Vandyke;Melanie Y. White;Terry Nguyen-Khuong;Kim Ow;Sharon C.-W. Luk;Elizabeth A. Kingsley;Alexandra Rowe;Shiu-Fun Pang;Bradley J. Walsh;Pamela J. Russell |
| Journal | ACS chemical neuroscience |
| Year | 2007 |
| DOI |
10.1593/neo.06775
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| URL | |
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