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中国药学(英文版) ›› 2014, Vol. 23 ›› Issue (9): 610-616.DOI: 10.5246/jcps.2014.09.078

• 【研究论文】 • 上一篇    下一篇

氨基二硫代甲酸酯类化合物IC5抑制结直肠癌细胞增殖及干预炎症性肠病相关结直肠癌发展

马婉婉, 唐叔南, 曹明楠, 葛泽梅, 李润涛, 余四旺*   

  1. 北京大学医学部 药学院 化学生物学系, 北京 100191
  • 收稿日期:2014-05-19 修回日期:2014-06-05 出版日期:2014-09-23 发布日期:2014-06-09
  • 通讯作者: Tel.: 86­10­82801539
  • 基金资助:
    National Natural Science Foundation (Grant No. 81272468 and 21001011) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education.

IC5, a dithiocarbamate derivative, inhibits colon cancer cell proliferation in vitro and colitis-associated colorectal carcinogenesis in vivo

Wanwan Ma, Shunan Tang, Mingnan Cao, Zemei Ge, Runtao Li, Siwang Yu   

  1. Department of Chemical Biology, School of Pharmaceutical Sciences Peking University Health Science Center, Beijing 100191, China
  • Received:2014-05-19 Revised:2014-06-05 Online:2014-09-23 Published:2014-06-09
  • Contact: Tel.: 86­10­82801539
  • Supported by:
    National Natural Science Foundation (Grant No. 81272468 and 21001011) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education.

摘要:

结直肠癌是发病率和死亡率较高的癌症之一, 炎症性肠病和异常的细胞增殖在结直肠癌发展过程中发挥重要作用, 所以, 抗炎和抑制细胞增殖已成为结直肠癌化学预防的主要策略。本文发现氨基二硫代甲酸酯类化合物IC5可剂量依赖性抑制人结直肠癌细胞LoVo增殖, IC50约为22 μM; 同时, IC5显著诱导细胞G2/M期周期阻滞。进一步研究发现, LoVo细胞中, IC5可以显著抑制NF-κB信号, 因此推测IC5可能抑制炎症响应。利用氧化偶氮甲烷(AOM)/葡聚糖硫酸钠(DSS)导小鼠结直肠癌模型研究发现, IC5可显著抑制结直肠癌发展。AOM/DSS小鼠模型结直肠癌发生率为58.3%, 口服给予IC5 50 mg/kg100 mg/kg可显著降低小鼠结肠癌发生率, 分别降至37.5%25.0%。此外, IC5可降低血浆中丙氨酸转氨酶(ALT)及天冬氨酸转氨酶(AST)的水平。综上所述, IC5可干预炎症相关结直肠癌的发生发展, 作为癌症预防试剂值得继续研究。

 

关键词: 氨基二硫代甲酸酯类化合物, 结直肠癌, 炎症性肠病相关结直肠癌, 化学预防, 增殖, NF-κB

Abstract:

Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths, and inflammatory bowel diseases and dysregulated cell proliferation play important roles in colorectal carcinogenesis. Therefore, inhibition of inflammatory signalingand cell proliferation is used as a major strategy for chemoprevention of CRC. In the present study, it was found that IC5, a dithiocarbamate derivative, could inhibit the proliferation of LoVo human colon cancer cells in a concentration-dependent manner, with an IC50 of 22μM. The anti-proliferation effect of IC5 was accompanied by a significant cell cycle arrest in G2/M phase. Further study revealed that IC5 significantly inhibited NF-κB signaling in LoVo cells, suggesting that IC5 could inhibitinflammatory responses. We then evaluated the in vivo efficacy of IC5 to inhibit colitis-associated colorectal carcinogenesis using an azoxymethane (AOM)/dextran sodium sulfate (DSS) mouse model. AOM/DSS treatment resulted in a CRC incidence of 58.3%, while the incidences were decreased to 37.5% and 25% in mice orally administered with 50 and 100 mg/kg IC5, respectively. In addition, IC5 also reduced the plasma levels of alanine aminotransferase and asparatate aminotransferase. Taken together, these results suggested that IC5 could prevent colitis-associated colorectal carcinogenesis, and more attention should be paid to it as a cancer chemopreventive agent in further investigation.  

Key words: Dithiocarbamate, Colorectal cancer, Colitis-associated colorectal carcinogenesis, Chemoprevention, Proliferation, NF-κB

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