We　investigate　joint　effects　of　the　Coulombic　dot-lead　interaction　and　intralead　electron　interaction　on　current　through　a　quantum　dot　weakly　coupled　to　Luttinger　liquid　leads.　A　general　formula　of　current　is　derived　by　applying　the　canonical　transformation　and　the　nonequilibrium　Green　function　technique.　At　low　temperature　and　weak　intralead　interaction,　the　current　exhibits　staircase　behavior　with　the　Coulombic　dot-lead　interaction.　When　temperature　or　the　intralead　interaction　increases,　the　steps　are　rounded.　For　a　weak　or　moderately　strong　interaction　the　differential　conductance　as　a　function　of　bias　voltage　demonstrates　resonant　behavior.　The　dot-lead　exchange　scattering　processes　can　dominate　electron　transport　for　a　certain　region　of　interaction　strength.　This　result　implies　the　possibility　of　controlling　the　differential　conductance　of　the　transistor　by　tuning　the　Coulombic　dot-lead　coupling.