sentence: Some cultured cells were treated with 10 nM Autotaxin ( Echelon , E-4000 ) , 1 µ M of the autotaxin inhibitor , S32826 , ( Sigma , S1825 ) , 1 µ M of the Lpar1 inhibitors , 2440 ( IC = 1.7 µ M ) and 8437 ( IC = 6.4 µ M ) .