Silkworm powder containing manganese superoxide dismutase regulated the immunity and inhibited the growth of Hepatoma 22 cell in mice.
The effects of SOD contained silkworm powder on immune regulation and inhibition against Hepatoma 22 tumor cells in vivo were investigated. The activity of natural killer cell (NK) and the ConA-stimulated spleen proliferation were measured. The results found that the SOD-contained silkworm powder caused an enhancement on NK cell activity, which implied this material modulated the immune system in mice in vivo. The NK cell activities of Hepatoma 22 tumor modeled mice treated with silkworm powder including SOD were increased significantly compared to a modeled control and silkworm powder without SOD, reaching 36.18%. In addition, the ConA-stimulated spleen proliferation of SOD treated mice was higher than that of the controls. The treatment of SOD contained silkworm powder presented 40.3% of average inhibition rate to Hepatoma 22 tumor, showing stronger inhibition against tumor. There were no significant difference in body weight between modeled control and SOD silkworm powder feeding in Hepatoma 22 tumor modeled mice, suggesting the SOD silkworm powder is safety as an inhabitant to tumor. In conclusion, these findings demonstrate that administration of silkworm powder containing SOD results in activation of NK cells and immunity, suggesting the silkworm powder containing SOD plays a positive role in tumor inhibition.
Yue
Wan-Fu
WF
Institute of Sericulture and Apiculture, College of Animal Sciences, Zhejiang University, Hangzhou 310029, P.R. China.
Deng
Wen
W
Li
Xing-Hua
XH
Roy
Bhaskar
B
Li
Guang-Li
GL
Liu
Jian-Mei
JM
Wu
Xiao-Feng
XF
Sun
Hong-Xiang
HX
Yao
Min-Li
ML
David
Wan Chi Cheong
WC
Miao
Yun-Gen
YG
D000818:Animals; D000970:Antineoplastic Agents; D012831:Bombyx; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D007109:Immunity / Q000187:drug effects; D007694:Killer Cells, Natural / Q000187:drug effects; D008114:Liver Neoplasms, Experimental / Q000188:drug therapy* / Q000473:pathology; D051379:Mice; D011208:Powders; D013482:Superoxide Dismutase / Q000008:administration & dosage / Q000627:therapeutic use*
D000970:Antineoplastic Agents; D011208:Powders; D013482:Superoxide Dismutase