CSK and infection: However, repeated attempts to reinstate GJIC by reducing Src activity levels through treatment with the Src kinase family-selective, pharmacological inhibitors Dasatinib, PD180970 or SU6656, or infection with Adenoviral vectors expressing a Src dominant-negative mutant or c-Src kinase[15] in A549 cells which have high Src-ptyr418 were unsuccessful (not shown).