Open AccessBlocking the attachment of cancer cells in vivo with DNA aptamers displaying anti‐adhesive properties against the carcinoembryonic antigen
Author(s) -
Orava Erik W.,
Abdul-Wahid Aws,
Huang Eric H.-B.,
Mallick Amirul Islam,
Gariépy Jean
Publication year - 2013
Publication title -
molecular oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.332
H-Index - 88
eISSN - 1878-0261
pISSN - 1574-7891
DOI - 10.1016/j.molonc.2013.03.005
Subject(s) - aptamer , carcinoembryonic antigen , cancer cell , cell adhesion , cancer research , in vivo , cancer , cell , dna , adhesion , antigen , chemistry , microbiology and biotechnology , biology , immunology , biochemistry , genetics , organic chemistry
The formation of metastatic foci occurs through a series of cellular events, initiated by the attachment and aggregation of cancer cells leading to the establishment of micrometastases. We report the derivation of synthetic DNA aptamers bearing anti‐adhesive properties directed at cancer cells expressing the carcinoembryonic antigen (CEA). Two DNA aptamers targeting the homotypic and heterotypic IgV‐like binding domain of CEA were shown to block the cell adhesion properties of CEA, while not recognizing other IgV‐like domains of CEACAM family members that share strong sequence and structural homologies. More importantly, the pre‐treatment of CEA‐expressing tumour cells with these aptamers prior to their intraperitoneal implantation resulted in the prevention of peritoneal tumour foci formation. Taken together, these results highlight the effectiveness of targeting the cell adhesion properties of cancer cells with aptamers in preventing tumour implantation.