ABSTRACT
1. In order to introduce antitetanus immunoglobulin fragments into eukaryotic cells, either antitetanus F(ab')2 or Fab' fragments have been linked to carrier molecules. Aciclovir, horseradish peroxidase, wheat germ agglutinin, and transferrin were tried as carriers. 2. F(ab')2-aciclovir and Fab'-horseradish peroxidase were not internalized by NG108-15 neurohybridoma cells. 3. [Fab']2-wheat germ agglutinin and F(ab')2-transferrin conjugates were internalized into various cells. 4. F(ab')2-transferrin conjugates were made with three different linkers: N-succinimidyl 3-(2-pyridyldithio) propionate, bis-maleimido hexane, and bis-maleimidoethoxy propane. All three conjugates were internalized but had a different fate inside the cells.
Subject(s)
Eukaryotic Cells/immunology , Immunoglobulin Fab Fragments , Tetanus Antitoxin/immunology , Acyclovir/immunology , Horseradish Peroxidase/immunology , Immunotoxins/immunology , Transferrin/immunology , Wheat Germ Agglutinins/immunologyABSTRACT
Herpesvirus type 1 could be propagated most efficiently in cultured fetal neurons, to a lesser extent in NG108-15 neurohybridoma cells, and with the lowest titer in glial cells. Herpesvirus type 2 could not be cultured in neurohybridoma cells, and in fetal neurons a titer 100-fold lower than for herpesvirus type 1 was obtained. Cells infected with herpesvirus type 1 were used in an infectivity assay for acyclovir dose-response studies. The ED50 values were 7.4 nmol/l for fetal neurons, 180 for neurohybridoma cells, and 275 nmol/l for glial cells.