PT  - JOURNAL ARTICLE
AU  - SO INAMURA
AU  - HIDEAKI ITO
AU  - MINEKATSU TAGA
AU  - KATSUKI TSUCHIYAMA
AU  - HITOMI HOSHINO
AU  - MOTOHIRO KOBAYASHI
AU  - OSAMU YOKOYAMA
TI  - Low-dose Docetaxel Enhanced the Anticancer Effect of Temsirolimus by Overcoming Autophagy in Prostate Cancer Cells
AID  - 10.21873/anticanres.13735
DP  - 2019 Oct 01
TA  - Anticancer Research
PG  - 5417--5425
VI  - 39
IP  - 10
4099  - http://ar.iiarjournals.org/content/39/10/5417.short
4100  - http://ar.iiarjournals.org/content/39/10/5417.full
SO  - Anticancer Res2019 Oct 01; 39
AB  - Background/Aim: Chemotherapy with docetaxel (DTX) is used for castration-resistant prostate cancer (CRPC), but it is inadequate. Materials and Methods: We evaluated the effect of the combination treatment DTX and the mTOR inhibitor temsirolimus (TEM) in the PC3 prostate cancer cell line, by focusing on the induction of autophagy and apoptosis. Results: TEM induced autophagy but not apoptosis even at a high dose, whereas DTX induced apoptosis. The combination of low-dose DTX and TEM caused a 34% suppression in cell proliferation compared to monotherapy with a higher dose of DTX. The induction of apoptosis was increased by their combination. The combination with DTX overcame the induction of autophagy by TEM. The combination treatment suppressed tumor growth 72% less than the control group after 14 days of treatment in vivo. Conclusion: The combination of TEM and DTX induced apoptosis by overcoming autophagy and enhanced the anticancer effect compared to monotherapy.