Preventive effect of the soluble tumor-associated antigens on DMBA induced tumorigenesis in C3H/He mice

George Kossoy, Herzl Ben-Hur, Asher Elhayany, David F. Schneider, Nadja Kossoy, Itshak Zusman

Research output: Contribution to journalArticlepeer-review

Abstract

In our previous studies, we showed that soluble tumor-associated antigens (sTAA) of 66 kDa and 51 kDa have distinct tumor-preventive effects on chemically induced mammary cancer in rats and are able to repair the damage caused by tumorigenesis in its early stages. In the present study, we investigated whether these proteins can prevent the development of chemically induced tumors in mice. The study was performed on C3H/He mice which have the ability to develop many spontaneous tumors with age. Forty-four, 6-week-old mice were exposed twice at a 2-week interval to the carcinogen 9,10-dimethyl-1,2-benz(a)anthracene (DMBA), at a dose of 2 mg/mouse administered intragastrically. Two months later, the mice were divided into two groups. One group received sterile saline twice a week at a dose of 0.2 ml/mouse, intraperitoneally (i.p.). The other group received sTAA twice a week at a dose of about 10 μl in 0.2 ml of sterile saline/mouse, i.p. Periodically, all mice were checked for the presence of tumors. The experiment was terminated at week 35. Vaccination with sTAA increased the time of involvement of mice in the experiment, prevented the tumorigenic effect of DMBA, and inhibited further development of existing tumors.

Original languageEnglish
Pages (from-to)1625-1629
Number of pages5
JournalOncology Reports
Volume14
Issue number6
DOIs
StatePublished - Dec 2005
Externally publishedYes

Keywords

  • Carcinogen
  • Mice
  • Soluble tumour-associated antigens

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