[Cytotoxicities of low dose anticancer agents combining lymphokine activated killer cell against ovarian adenocarcinoma cell line SKOV3].
OBJECTIVE
To investigate whether low-dose anticancer agents could increase the sensitivity of ovarian adenocarcinoma cell line SKOV3 to lymphokine activated killer cell (LAK).


METHODS
After SKOV3 cells were pretreated by low dose anticancer agents Taxol, cis-diamminedichloroplatin(CDDP), 5-fluorouracilum(5-FU) for 18 hours, the sensitivity of SKOV3 to LAK was detected by four 51Cr release assay. And the percentage of SKOV3 adhesion to LAK and intercellular adhesion molecule-1 (ICAM-1) expression on SKOV3 were detected by improved Grimm's assay and FACS respectively.


RESULTS
After pretreatment of SKOV3 cell with 1.5 micrograms/ml Taxol, 4 micrograms/ml CDDP, 25 micrograms/ml 5-FU or without anticancer agents as control for 18 hours, the cytotoxicities of Interleukin-2 activated LAK against them were 29.7%, 45.9%, 37.2% and 28.5% respectively. The conjugation rates of SKOV3 and LAK were 20.1%, 26.1%, 24.9% and 18.7% respectively. The positive rates of ICAM-1 expression were 52.5%, 65.5%, 68.1% and 49.7% respectively. CDDP and 5-FU increased ICAM-1 expression significantly and the sensitivity of SKOV3 cell to LAK cell lysis was well related to the ICAM-1 expression.


CONCLUSIONS
The results indicate that some low dose anticancer agents can increase the sensitivity of cancer cells to LAK cells and it would be useful in clinical practice.
Chen
R
R
Chinese Academy of Medical Sciences, Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730.
Pan
L
L
Zhou
S
S
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000494:pharmacology*; D002945:Cisplatin / Q000494:pharmacology; D018283:Cystadenocarcinoma, Papillary / Q000473:pathology*; D005260:Female; D005472:Fluorouracil / Q000494:pharmacology; D006801:Humans; D018799:Intercellular Adhesion Molecule-1 / Q000378:metabolism; D015979:Killer Cells, Lymphokine-Activated / Q000276:immunology*; D010051:Ovarian Neoplasms / Q000473:pathology*; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000378:metabolism
D018799:Intercellular Adhesion Molecule-1; D002945:Cisplatin; D005472:Fluorouracil