Home Neoplasma 2016 Neoplasma Vol.63, No.3, p.371-377,2016

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ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.63, No.3, p.371-377,2016

Title: Expression of ARE-binding proteins AUF1 and HuR in follicular adenoma and carcinoma of thyroid gland
Author: B. TROJANOWICZ, C. SEKULLA, H. DRALLE, C. HOANG-VU

Abstract: Both adenylate-uridylate rich elements binding proteins AUF1 and HuR may participate in thyroid carcinoma progression. In this study we investigated the expression of both factors on a protein level with a special focus on follicular adenoma and follicular thyroid carcinoma. By employment of immunofluorescence and western blot on 68 thyroid tissues including 7 goiter, 16 follicular adenoma (4 adenomatous hyperplasia), 19 follicular thyroid carcinomas, 13 papillary thyroid carcinomas and 14 undifferentiated thyroid carcinomas we investigated protein expression of AUF1 and HuR. In addition to previous results we demonstrated that AUF1 and HuR are significantly up-regulated in carcinoma tissues as compared with follicular adenoma or goiter tissues. Furthermore, by evaluation of AUF1 or HuR expression, or combination of both proteins on total tissue lysates, we were able to demonstrate a significant difference between follicular adenoma and follicular thyroid carcinoma.
Overexpression of AUF1 and HuR is a common finding observed in thyroid malignancy. Analysis of the tissues obtained by surgical resection as demonstrated in this study is comparable to a fine needle aspiration and in combination with AUF1/HuR immuno-analysis may support the conventional immunohistological investigations. The promising results of this study were performed on relatively small collective, but justify future development of a quick thyroid diagnostic test on larger cohort of the patients, especially for thyroid samples which are inadequate for histological examinations.

Keywords: AUF1, HuR, ARE, thyroid carcinoma, follicular adenoma, FTC
Published online: 16-May-2016
Year: 2016, Volume: 63, Issue: 3 Page From: 371, Page To: 377
doi:10.4149/305_150819N450


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