Characterization of monoclonal antibodies against infectious laryngotracheitis virus
1996
Abbas, F. | Andreasen, J.R. Jr | Baker, R.J. | Mattson, D.E. | Guy, J.S.
Nine monoclonal antibodies (MCAs) produced against two different strains of infectious laryngotracheitis virus (ILTV) were characterized and compared to previously characterized MCA 131-6, produced against a third ILTV strain. In western blotting experiments, MCAs C, E, and 11 resembled MCA 131-6, detecting proteins of 205, 160, 115, and 90 kD as well as several proteins less than 49 kD. The other six MCAs differed from previously described ILTV MCA. MCA D detected a 90-kD protein along with several less than 49 kD. MCAs 4 and 5 each detected proteins of 205, 160, 100, 90, and 70 kD. MCA 9 detected the same proteins detected by MCAs 4 and 5 except the 160-kD protein. MCA 10 detected proteins of 100, 90, and 70 kD and several proteins less than 49 kD. MCAs C, D, and E, like MCA 131-6, failed to react with any ILTV grown in the presence of tunicamycin, suggesting that those MCAs are specific for carbohydrate-based epitopes. MCA 6 reacted with only a 100-kD protein in the presence or absence of tunicamycin. The remaining MCA detected only a 70-kD protein in the presence of tunicamycin except MCA 5, which reacted with proteins of 70 and 90 kD. Only MCA 4 and 6 neutralized ILTV infectivity.
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