| 张月英 张维东 贾 青 王兆朋 黄山英 宋守琴 王朝霞.蝎毒多肽提取物抑制DU- 145 细胞
COX- 2 和MMP- 9 表达的研究[J].,2006,6(5):8-10 |
| 蝎毒多肽提取物抑制DU- 145 细胞
COX- 2 和MMP- 9 表达的研究 |
| Polypeptide extract from scorpion venom ( PESV) downregulatesthe expression of COX- 2 and MMP- 9 in DU- 145 cell lines |
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| DOI： |
| 中文关键词: R737. 65 R285. 5 ?? 文献标识码: A |
| 英文关键词: Polypeptide extract from scorpion venom ( PESV) Prostate cancer Cyclooxygenase- 2 ( COX- 2) , Matrix metallopro??
teinase- 9 (MMP- 9) |
| 基金项目:国家自然科学基金资助项目( 编号30371841) , 山东省自然科学基金资助( 编号Y2003C02) |
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| 中文摘要: |
| 目的: 研究蝎毒多肽提取物( peptide extract from scorpion venom, PESV) 对雄激素非依赖性人前列腺癌细胞株DU-
145COX- 2 和MMP- 9 表达的影响, 进一步探讨其抗血管生成的分子机制, 为抗前列腺癌骨转移提供有效的治疗手段。方法: 采
用免疫组只化学方法检测PESV 对COX- 2、MMP- 9 蛋白表达的影响, 应用RT- PCR 检测PESV 对MMP- 9 在mRNA 水平表达的
影响。结果: 蝎毒多肽提取物( 40??g/ mL) 作用于前列腺癌细胞后, COX- 2、MMP- 9 蛋白表达水平明显下调( P< 0. 05) , 进一步检
测发现MMP- 9 在mRNA 水平亦明显下降( P< 0. 05) 。结论: 蝎毒多肽提取物( PESV) 通过抑制前列腺癌细胞血管生成因子COX
- 2 的表达而发挥其抗血管生成作用, 具有临床应用价值。 |
| 英文摘要: |
| Objective: To investigate the effect of polypeptide extract from scorpion venom ( PESV) on the expression of cyclooxyge??
nase- 2 ( COX- 2) and matrix metalloproteinase- 9 (MMP- 9) in androgen- independent human prostate cancer DU145 cell line, and to ex??
plore the antiangiogenic mechanisms induced by PESV, finally, hopefully to find out potential approach to targeting bone metastasis of prostate
cancer. Methods: Immunohistochemistry was performed to determine the expression of COX- 2 andMMP- 9 in DU145 cells treated with PESV
( 40ug/ ml) or vehicle. MMP- 9 mRNA was detected using RT- PCR. Results: The expression of COX- 2 and MMP- 9 was significantly
downregulated in PESV- trearted DU145 cells, compared with the control, and the amount of MMP- 9 mRNA reduced significantly in the treat??
ment group. Conclusions: PESV is able to inhibit the expression of COX- 2 andMMP- 9, thus leading to inhibitory effect on PESV might be
a promising angiogenesis inhibitor. |
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