Effects of TRPM8 on the proliferation and angiogenesis of prostate cancer PC-3 cells in vivo.

Abstract:

:Prostate cancer is a significant health concern. In the early stages, prostate cancer cells depend on androgens for growth and survival, hence androgen-ablation therapy at this time may be effective in causing tumor regression. However, treatment options for advanced hormone-refractory prostate cancers are still relatively inefficient. This study aimed to investigate the possible effects of TRPM8 on the proliferation and angiogenesis of androgen-independent cancer PC-3 cells in vivo. Thirty male nude mice were divided into three groups: the PC-3, PC-3-vector and PC-3-TRPM8 groups. PC-3, PC-3-vector and PC-3-TRPM8 cells were respectively inoculated in the right flank to establish a transplanted tumor model. The mice were treated daily for four weeks and each group was examined by histology and immunohistochemical staining for CD34, FAK and PCNA. A CD34 marked microvascular density (MVD) test was performed. Western blot analysis was used to detect the VEGF protein expression level. Compared to the PC-3 and PC-3-vector groups, the PC-3-TRPM8 group revealed a decrease in tumor volume (P=0.000 and P=0.000, respectively), MVD (P=0.045 and P=0.041, respectively), VEGF (P=0.000 and P=0.000, respectively), FAK and PCNA. The correlation between MVD and VEGF was positive (r=0.419; P=0.021). These data show that the overexpression of TRPM8 had a negative effect on the proliferation and angiogenesis progression of PC-3 cells in vivo.

journal_name

Oncol Lett

journal_title

Oncology letters

authors

Zhu G,Wang X,Yang Z,Cao H,Meng Z,Wang Y,Chen D

doi

10.3892/ol.2011.410

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

1213-1217

issue

6

eissn

1792-1074

issn

1792-1082

pii

ol-02-06-1213

journal_volume

2

pub_type

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