Table 1.

Correlation between the Plk-1 protein level and gemcitabine chemoresistance in three pancreatic adenocarcinoma cell lines

Cell line	Gemcitabine IC50	Plk-1 protein level (arbitrary units)
AsPC-1	50 nM	6.8 ± 1.75
PANC1	40 nM	4.3 ± 1.12*
BxPC3	18 nM	1.5 ± 0.62*

^*P < 0.05 versus AsPC-1 group for Plk-1 protein level by Kruskal-Wallis test.

R²= 0.94 between gemcitabine IC₅₀and Plk-1 protein level by Spearman correlation analysis.