Homotypic adhesion through carcinoembryonic antigen plays a role in hepatic metastasis development

Japanese Journal of Cancer Research : Gann
T YoshiokaY Hashimoto

Abstract

We established a cell line with high metastatic potential to the liver (LS-LM4) after four successive repetitions of splenic injection of liver-metastatic cells in SCID mice. This cell line strongly expressed CEA and showed increased homotypic adhesion as compared with the parent cell line (LS174T). To examine the role of CEA in the increased homotypic adhesion, LS-LM4 cells were treated with anti-CEA antibody and subjected to an in vitro adhesion and aggregation assay. Further, to study the role of CEA in the hepatic metastasis of cells with high metastatic potential, LS-LM4 cells were treated with anti-CEA antibody, and the inhibition of hepatic metastasis after splenic injection in vivo was examined. There was a 62% decrease in the homotypic adhesion of anti-CEA antibody-treated (100 microg/ml) LS-LM4 cells under a Ca2+-free condition as compared with the control (P<0.01). Anti-CEA antibody (100 microg/ml) inhibited cell aggregation under a Ca2+-free condition (P<0.05). Treatment with anti-E-cadherin antibody (60 microg/ml) plus anti-CEA antibody (100 microg/ml) inhibited cell aggregation more potently than anti-E-cadherin antibody treatment alone in the presence of Ca2+. In vivo, there was a 75% decrease in the number of he...Continue Reading

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Citations

Dec 14, 2004·Cancer Immunology, Immunotherapy : CII·Rosalyn D BlumenthalDavid M Goldenberg
Jul 5, 2005·Journal of Immunological Methods·Cheng-Mee Leong, Merilyn H Hibma
May 16, 2002·International Immunopharmacology·Salvatore P PreteAngelo Aquino
Mar 15, 2012·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Matthew R DallasKonstantinos Konstantopoulos
Jan 5, 2007·BMC Cancer·Rosalyn D BlumenthalDavid M Goldenberg
Apr 28, 2017·Expert Review of Anticancer Therapy·Jie XiaBaorui Liu
Aug 30, 2008·British Journal of Cancer·R D BlumenthalD M Goldenberg
Feb 11, 2016·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Marina BacacPablo Umana

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