Hypoestoxide inhibits tumor growth in the mouse CT26 colon tumor model.

Abstract:

AIM:To evaluate the effect of the natural diterpenoid, hypoestoxide (HE) on the growth of established colon cancer in mice. METHODS:The CT26.WT mouse colon carcinoma cell line was grown and expanded in vitro. Following the expansion, BALB/c mice were inoculated s.c. with viable tumor cells. After the tumors had established and developed to about 80-90 mm(3), the mice were started on chemotherapy by oral administration of HE, 5-fluorouracil (5-FU) or combination. RESULTS:The antiangiogenic HE has previously been shown to inhibit the growth of melanoma in the B16F(1) tumor model in C57BL/6 mice. Our results demonstrate that mean volume of tumors in mice treated with oral HE as a single agent or in combination with 5-FU, were significantly smaller (> 60%) than those in vehicle control mice (471.2 mm(3) vs 1542.8 mm(3), P < 0.01). The significant reductions in tumor burden resulted in pronounced mean survival times (MST) and increased life spans (ILS) in the treated mice. CONCLUSION:These results indicate that HE is an effective chemotherapeutic agent for colorectal cancer in mice and that HE may be used alone or in combination with 5-FU.

journal_name

World J Gastroenterol

authors

Ojo-Amaize EA,Cottam HB,Oyemade OA,Okogun JI,Nchekwube EJ

doi

10.3748/wjg.v13.i34.4586

subject

Has Abstract

pub_date

2007-09-14 00:00:00

pages

4586-8

issue

34

eissn

1007-9327

issn

2219-2840

journal_volume

13

pub_type

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