Effects of cisplatin, interferon-alpha and 13-cis retinoic acid on the expression of Fas (CD95), intercellular adhesion molecule-1 (ICAM-1) and epidermal growth factor receptor (EGFR) in oral cancer cell lines
2007 (English)In: Journal of Oral Pathology & Medicine, ISSN 0904-2512, E-ISSN 1600-0714, Vol. 36, no 3, 177-183 p.Article in journal (Refereed) Published
Background: Previous studies showed that many chemotherapeutic agents can induce immuno-suppression at therapeutic drug concentrations whereas low drug doses induce immuno-augmentation.
Methods: The effect of low-dose cisplatin, interferon-alpha, and 13-cis retinoic acid on receptors involved in immune-mediated apoptosis (Fas/CD95), cell growth (epidermal growth factor receptor) and lymphocyte adhesion (intercellular adhesion molecule-1) was investigated in two oral cancer cell lines (UT-SCC-20A and UT-SCC-24A). Different methods for cell preparation were studied: mechanical and enzymatic detachment, and culture on chamber slides. Receptor expression was investigated using immunohistochemical staining. The amount of soluble and cell-bound Fas was determined with the ELISA technique, and the functional relevance of Fas expression, apoptosis induction, was analyzed.
Results: Cisplatin enhanced cytoplasm and membrane staining for Fas in both cell lines. After cisplatin treatment, the amount of soluble Fas was increased in UT-SCC-20A cultures, but no effect was observed in the UT-SCC-24A cell line. Apoptosis, measured as enhanced caspase-3 activity, was induced by an agonistic Fas antibody (CH11) after cisplatin treatment in UT-SCC-24A cells.
Conclusions: Low-dose cisplatin treatment enhanced Fas expression in both cell lines and increased susceptibility to apoptosis in one of them.
Place, publisher, year, edition, pages
Blackwell Publishing, 2007. Vol. 36, no 3, 177-183 p.
apoptosis, 13-cis retinoic acid, cisplatin, EGFR, Fas (CD95), ICAM-1, α-interferon, oral cancer
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-12806DOI: 10.1111/j.1600-0714.2006.00503.xISI: 000244244500009PubMedID: 17305640OAI: oai:DiVA.org:liu-12806DiVA: diva2:17091