Related Experiment Videos
Suppressive effect of soybean milk protein on experimentally induced skin tumor in mice
P Limtrakul1, M Suttajit, R Semura
1Faculty of Medicine, Chiang Mai University, Thailand.
Abstract:
We studied the effect of soybean milk protein (SMP) in a two-stage carcinogenesis experiment on mouse skin. Mice were given soybean protein isolate (SPI) diet or SPI diet supplemented with SMP. After 4 weeks on the diets, the mice were shaved and a tumor initiator was applied. A tumor promotor was then applied twice a week on the same area of the skin throughout the experiment. After 20 weeks on the treatment, the percentage of tumor-bearing mice and the volume of tumor tended to be lower in the mice on the SMP diet than those on the SPI diet. The number of tumor was also significantly lower in the former group as compared to the latter group. There was no difference in growth between mice of the SPI and SMP groups. The results indicate the safety and the anti-carcinogenic effect of SMP in mice.
Insights
Soybean milk protein (SMP) demonstrated anti-carcinogenic effects in a mouse skin study. Mice consuming SMP showed fewer tumors and reduced tumor volume, suggesting its safety and potential cancer-preventive properties.
Area of Science:
- Biochemistry
- Oncology
- Nutrition
Background:
- Dietary proteins can influence carcinogenesis.
- Soybean protein isolate (SPI) is a common dietary component.
- The specific effects of soybean milk protein (SMP) on cancer development require investigation.
Purpose of the Study:
- To evaluate the anti-carcinogenic potential of soybean milk protein (SMP) in a mouse model.
- To assess the effect of SMP on tumor incidence and volume in a two-stage skin carcinogenesis experiment.
Main Methods:
- A two-stage carcinogenesis experiment was conducted on mouse skin.
- Mice were fed either a soybean protein isolate (SPI) diet or an SPI diet supplemented with SMP for 4 weeks.
- Tumor initiation and promotion were applied, followed by 20 weeks of observation.
Main Results:
- Mice consuming the SMP-supplemented diet exhibited a tendency towards a lower percentage of tumor-bearing mice and reduced tumor volume compared to the SPI-only group.
- A significantly lower number of tumors was observed in the SMP group.
- No significant differences in overall growth were noted between the SPI and SMP diet groups.
Conclusions:
- Soybean milk protein (SMP) displays anti-carcinogenic effects in the context of mouse skin carcinogenesis.
- The results suggest that SMP is safe for consumption and possesses cancer-preventive properties.