IgIII-induced NF-κB activation is inhibited by the expression of
Tm-Cyto truncation mutants containing the amino acids 780–790.
(A) Immunoblot of astrocytes transfected with Tm-Cyto
constructs. Lane 1, pcDNA3.1+; lane 2, Tm-Cyto; lane 3,
Tm-CytoΔ824–839; lane 4, Tm-CytoΔ801–839; lane 5,
Tm-CytoΔ791–839; lane 6, Tm-CytoΔ780–839; lane 7,
Tm-CytoΔ745–839; and lane 8, GFP-Δ745–839. The band at higher
molecular weight in lane 8 is nonspecific and is present in
nontransfected astrocytes (data not shown). (B)
Luciferase activity in transfected astrocytes. The results are shown as
described above.