杨维泓,姚庆华,徐玉芬,李 妍.姜黄素对Lewis肺癌小鼠TGF-β1、 Smad3、 Smad7表达的影响[J].浙江中西医结合杂志,2012,22(4):259-261 |
姜黄素对Lewis肺癌小鼠TGF-β1、 Smad3、 Smad7表达的影响 |
Effect of Curcumin on the Expression of TGF-β1, Smad3 and Smad7 in Mice with Lewis Lung Cance |
投稿时间:2011-12-08 |
DOI: |
中文关键词: 小鼠 Lewis 肺癌 TGF-β1 Smad3 Smad7 姜黄素 |
英文关键词:mice Lewis lung cancer TGF-β1 Smad3 Smad7 curcumin |
基金项目:浙江省中医药科技计划项目 (No.2008CB009) |
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中文摘要: |
目的: 观察姜黄素对Lewis 肺癌小鼠瘤体组织TGF-β1、 Smad3、 Smad7蛋白表达的影响。
方法: 雄性C57BL/6小鼠20只, 随机分成姜黄素处理组与模型组, 每组10只。采用皮下接种瘤细胞
悬液造模。造模24h后, 模型组与姜黄素组分别腹腔注射注射用水和200mg/ (kg·d) 浓度的姜黄素
混悬液, 0.5mL/只, 1天1次, 连续12天。应用免疫组织化学显色技术, 检测小鼠瘤体组织内TGF-β
1、 Smad3、 Smad7蛋白的表达及定位情况。结果: ①与模型组比较, 姜黄素抑瘤率29.96%。姜黄素
组瘤体平均质量 (1.64±0.32) g, 与模型组 (2.34±0.70) g比较, 差异具有统计学意义 (P<0.05)。②本
研究采用免疫组化定量公式计算蛋白表达阳性单位, 结果显示TGF-β1染色强度姜黄素组为
(17.83±3.46), 模型组为 (25.76±4.72), 两组比较差异具有统计学意义 (P<0.01); Smad3染色强度姜
黄素组为 (14.64±2.24), 模型组为 (23.71±3.07), 两组比较差异有统计学意义 (P<0.01); Smad7染色
强度结果显示姜黄素组为 (10.97±1.89), 模型组为 (8.46±1.04), 两者比较差异具有统计学意义 (P<
0.01)。③瘤体组织内TGF-β1与Smad3蛋白表达具有相关性 (P=0.043)。结论: 姜黄素能抑制肿瘤
生长, 其作用机制可能与上调Smad7蛋白表达, 下调Smad3蛋白表达, 从而减少TGF-β1的过度表
达有关。 |
英文摘要: |
Objective: To observe the effects of curcumin on the expression of TGF-β1, Smad3, Smad7 proteins
in mice with Lewis lung cancer. Methods: Twenty male C57BL/6 mice were randomly divided into model group
and curcumin group, 10 in each. A mouse model of Lewis lung cancer was established by subcutaneously inocu?
lating tumor cell suspension. Mice in the model group were intraperitoneally injected with 0.5 ml of saline once
a day and 200 mg/kg/d of curcumin suspension was injected once a day in the curcumin group, both for 12
days. Tumor mass was harvested on the thirteenth day after 12 hour fasting. The expression of TGF-β1, Smad3,
Smad7 proteins in tumor tissues were assessed by immunohistochemistry. Results: ①Curcumin inhibition rate
was 29.96%. The average weight of subcutaneous tumor in the curcumin group was 1.64 ±0.32 g, significantly
lighter than that of the model group (2.34±0.70 g), P<0.05.②The staining intensities of TGF-β1 and Smad3 in
the curcumin group were 17.83±3.46 and 14.64±2.24 as compared to 25.76±4.72 and 23.71±3.07 in the model
group(P<0.01) . The staining intensity of Smad7 was 10.97±1.89 in the curcumin group, while 8.46±1.04 in the
model group, with a significant difference between them(P<0.01) . ③The expressions of TGF-β1 and Smad3 pro?
teins in the tumor tissue was correlated(P=0.043) . Conclusion: Curcumin can inhibit tumor growth by reducing
the excessive expression of TGF-β1 as a result of upregulating Smad7 and downregulating Smad3. |
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