期刊
IMMUNOPHARMACOLOGY AND IMMUNOTOXICOLOGY
卷 36, 期 1, 页码 25-32出版社
TAYLOR & FRANCIS LTD
DOI: 10.3109/08923973.2013.863912
关键词
Coumarins; Lewis lung cancer cells; umbelliprenin
资金
- Shiraz University of Medical Sciences [89-5291]
- Shiraz Cancer Research Center [ICR-87-503]
- Mashhad University of Medical Sciences
Umbelliprenin is a member of the 7-prenyloxycoumarins with potential therapeutic properties such as cytotoxic effects on various cancer cells. The present study investigates the effect of umbelliprenin on predominance of Th1 and Th2 responses in Lewis lung cancer (LLC) mouse model. The cytotoxic effect of umbelliprenin was explored on LLC cells and mouse splenocytes by MTT assay. Mice into which LLC had been transplanted were treated with umbelliprenin on alternate days, at 2.5 mg/200 mu l intraperitoneally. Foxp3, TNF-alpha and TGF-beta mRNA expressions were assessed in tumor and lung tissues of LLC mice. In addition, IL-10, IFN-gamma and IL-4 levels were determined in sera and also in splenocyte culture supernatants at the presence of tumor cell lysate (10 mu g/ml) and Con A (3 mg/ml) after 72 h. Results showed the cytotoxic effects of umbelliprenin on LLC cells (IC50 = 51.6 +/- 5.4 mu M) while no adverse effect was seen at this concentration on normal splenocytes. TNF-alpha mRNA expression in both lung and tumor tissues was increased. However, Foxp3 and TGF-beta expressions were decreased in tumor tissues. Serum level of IFN-gamma was elevated in the umbelliprenin treated cancerous mice compared to the control group while IL-10 and IL-4 secretions were reduced. Tumor size was also decreased in umbelliprenin treated group. In summary, umbelliprenin has shown a partially Th1 bias with a reduction of regulatory immune response. Although the mechanism behind this action is not known, it is speculated that upon changing the Th1/Th2 balance in favour of Th1, umbelliprenin induces its antitumor activity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据