Experimental autoimmunity was produced in rabbits following injection of altered homologous thyroglobulin. The thyroglobulin was altered by coupling to chemically defined haptens and by heating. With some preparations antibody to native thyroglobulin as well as thyroid lesions were produced. Injections of thyroglobulin coupled to the diazonium derivatives of arsanilic acid and sulfanilic acid w...

Data are presented which suggest that the initial event involved in experimental autoimmune thyroiditis following injection of rabbits with homologous thyroglobulin in complete Freund's adjuvant is alteration of the thyroglobulin. Alteration of the thyroglobulin does not occur during incorporation into the adjuvant or in vitro storage in the adjuvant, and the mycobacteria in the adjuvant have n...

Objective: To study the regulation of thyroglobulin sulfation by thyrotropin (TSH) and iodide. Sulfation, a widespread post-translational modification of proteins, is involved in various biological activities. Thyroglobulin has been reported to be sulfated but, to date, the role of sulfate residues in the metabolism and function of thyroglobulin is not known; moreover, the regulation of thyrogl...

Thyroglobulin, the major secretory product of thyrocytes, is the macromolecular precursor of thyroid hormones. After its synthesis, thyroglobulin follows a complex secretion, storage and recapture pathway to lysosomes. Porcine thyroglobulin was shown to carry the mannose 6-phosphate-(Man6P)-recognition marker on its N-linked glycans. Since the cation-independent Man6P receptor could also be fou...

Thyroglobulin, the major protein component of normal thyroid glands, contains more than 80% of the thyroidal iodine and has been considered the only source of thyroid hormones (1). Aqueous thyroid extracts contain, besides thyroglobulin, other proteins in variable amounts. Essentially, four methods have been used for the characterization of the various components in such extracts and for the pu...

The incorporation of carbohydrates has been studied in vitro in the experimental rat thyroid tumor l-lC2. The uptake of iV-[aH]acetyhnannosamine, a precursor of sialic acid, is less than 5% of that in normal thyroid gland; no label is found in 19 S thyroglobulin or its precursors either in the soluble or in the solubilized proteins. N-1 3H]Acetylglucosamine is incorporated at a slower rate than...