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Expression of sodium-iodide symporter in thyroid gland tumors: immunohistochemical study

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Bondarenko O.O., Shponka I.S., Shponka V.I. Expression of sodium-iodide symporter in thyroid gland tumors: im-munohistochemical study.

Summary. One of the key moments of radioiodine therapy, and also radioisotope diagnostics of cancers of a thyroid gland is ability of their cells to accumulate iodide. This ability is provided with activity of the specific transporter – sodium-iodide symporter. Our research has shown disorders of sodium-iodide symporter immunoexpression in all tumors of thyroid gland: from overexpression and absence of plasma membrane expression in differentiated carcinomas, up to weak or actually absent in low differentiated cancers and Hurtle-cells tumors. Thus, there is a prospect of application of the sodium-iodide symporter, as the prognostic marker of thyroid cancers.

Key words: papillary thyroid cancer, follicular thyroid cancer, immunohistochemistry.

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An immunohistochemical study of Na+/I– sym-porter in human thyroid tissues and salivary gland tissues / S. M. Jhiang, J. Y. Cho, K. Y. Ryu [et al.] //

Endocrinology. – 1998. – Vol. 139. – P. 4416-4419. Dai G. Cloning and characterization of the thy-roid iodide transporter / G. Dai, O. Levy, N. Carrasco // Nature. – 1996. – Vol. 379. – P. 458-460.

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__________________________________________________________________________________ • 2009 • I • №1

31 the expression levels of human sodium iodide

sym-porter / K. Y. Ryu, M. E. Senokozlieff, P. A. Smanik [et al.] // Thyroid. – 1999. – Vol. 9. – P. 405-409.

Increased expression of the sodium/iodide symporter in papillary thyroid carcinomas / T. Saito, T. Endo, A Kawaguchi. [et al.] // J. clin. invest. – 1998. – Vol. 101. – P. 1296-1300.

Monoclonal antibodies against the human so-dium iodide symporter: utility for immunocytochem-istry of thyroid cancer / M. R. Castro, E. R. Bergert, T. G. Beito [et al.] // J. endocrinol. – 1999. – Vol. 163. – P. 495-504.

N-linked glycosylation of the thyroid Na+/I– symporter (NIS) – implications for its secondary structure model / O. Levy, A. DelaVieja, C. S. Ginter [et al.] // J. biol. chem. – 1998. – Vol. 273. – P. 22657-22663.

Rapid communication: predominant intracellu-lar overexpression of the Na+/I–-symporter (NIS) in a large sampling of thyroid cancer cases / O. Dohan, Z. Baloch, Z. Banrevi, V. Livolsi [et al.]. // J. clin. endocrinol. metab. – 2001. – Vol. 86. – P. 2697-2700.

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