Vesicle interactions with antibody and peptide hormone: role of vesicle composition.

Autor: Dunnick JK, Badger RS, Takeda Y, Kriss JP
Jazyk: angličtina
Zdroj: Journal of nuclear medicine : official publication, Society of Nuclear Medicine [J Nucl Med] 1976 Dec; Vol. 17 (12), pp. 1073-6.
Abstrakt: Artificial lipid vesicles (artificial membranes) were shown to bind human 125I-antithyroglobulin (anti-Tg) and human 125I-thyrotropin. Vesicles made with gangliosides bound more antibody and hormone than vesicles lacking them. These gangliosides contained a variety of carbohydrates including glucose, galactose, N-acetyl-galactosamine, and sialic acid. The in vivo stability of antibody-vesicle complexes was a function of vesicle composition: vesicles were most stable when formed from phosphatidylcholine, cholesterol, and gangliosides. Anti-Tg-vesicle complexes bind to thyroglobulin, indicating that at least some of the antibody associated with the vesicle still retains ability to bind to its specific antigen. The addition of a specific antibody or hormone to artificial lipid vesicles may serve as a mechanism to confer specificity to the vesicle in vivo.
Databáze: MEDLINE