Chen JL, Chen MX, Lu JL, Chen WX, Zhu JS, Chen NW, Lu YM, Zhou T, Wu YL, Chen GQ. Inhibition of P-selectin L-EGF monoclonal antibody on metastasis of human gastric carcinoma in severe combined immunodeficient mice.
Shijie Huaren Xiaohua Zazhi 2005;
13:2791-2794. [DOI:
10.11569/wcjd.v13.i23.2791]
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Abstract
AIM: To investigate the role of cell adhesion molecule P-selectin L-EGF monoclonal antibody (L-EGF Mab) in the inhibition of the metastasis of gastric cancer in sev-ere combined immunodeficient (SCID) mice.
METHODS: Human gastric cancer cell line SGC-7901 was orthotopically implanted into SCID mice to estab-lish metastatic model. At the 3rd day after implantation, the mice were intravenously injected with normal saline (n = 11) or P-selectin L-EGF Mab (n = 9). At the end of the 6th wk, pathological examinations were performed on the tissues from stomach and other possible invad-ed organs. Meanwhile, polymerase chain reaction was performed on the gastric cancer tissues.
RESULTS: The metastatic rate in the mice treated with normal saline was 81.8% (9/11), and that in the mice treated with P-selectin L-EGF Mab was 11.1% (1/9). There was significant difference between them (P <0.05). The level of P-selectin mRNA expression in the gastric can-cer with metastasis was markedly increased in com-parison with that without metastasis, and P-selectin mRNA expression in the mice treated with P-selectin L-EGF Mab was significantly lower than that in the ones treated with normal saline (cycle threshold: 20.54±2.20 vs 17.09±1.40, P <0.05).
CONCLUSION: CONCLUSION: P-selectin adhesion molecule is related to tumor metastasis, and P-selectin L-EGF Mab can inhibit the metastasis by down-regulating the express-ion of P-selectin mRNA..
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