2011
DOI: 10.1177/030089161109700420
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Expression and correlation of sodium/iodide symporter and thyroid stimulating hormone receptor in human thyroid carcinoma

Abstract: In thyroid carcinomas, NIS and TSHR mRNA levels were lower but the proteins were overexpressed. The NIS protein mainly locates in the cytoplasm, which therefore lacks the ability of transporting and absorbing iodine in patients with thyroid carcinoma. In addition, there was no correlation between NIS and TSHR in thyroid cancer, which may explain why, even after TSH stimulation, 10-20% of these malignant tumors are unable to concentrate enough radioiodine for effective therapy.

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Cited by 21 publications
(19 citation statements)
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“…Na + /K -ATPase pump provides energy for this transport system [21] . Interestingly, NIS was demonstrated to be expressed in various normal non-thyroid tissues including salivary glands, lacrimal glands, breasts, stomach, intestine, lungs, and kidneys [22,23] . This finding may be associated with both the early/short-term and late/long-term side effects of RIT, including sialadenitis, xerostomia, gastritis, nausea/vomiting, dental caries, taste dysfunction, dry eye, and pulmonary fibrosis.…”
Section: Discussionmentioning
confidence: 99%
“…Na + /K -ATPase pump provides energy for this transport system [21] . Interestingly, NIS was demonstrated to be expressed in various normal non-thyroid tissues including salivary glands, lacrimal glands, breasts, stomach, intestine, lungs, and kidneys [22,23] . This finding may be associated with both the early/short-term and late/long-term side effects of RIT, including sialadenitis, xerostomia, gastritis, nausea/vomiting, dental caries, taste dysfunction, dry eye, and pulmonary fibrosis.…”
Section: Discussionmentioning
confidence: 99%
“…The majority of the studies have, however, been directed at deciphering the interactions of the proto-oncogene B-raf (BRAF V600E ) with the NIS gene in cancer. In general, the studies have led to the notion that, in resistant thyroid tumors, the BRAF V600E mutation was related to the downregulation of the NIS and thyroid stimulating hormone expression (Wang et al, 2011;Sodre et al, 2008), despite high cytosolic NIS protein expression (Wang et al, 2011). This has been linked to the inability of the NIS to migrate to the cellular basolateral membrane (Sodre et al, 2008).…”
Section: Discussionmentioning
confidence: 99%
“…The main regulator of NIS expression in the thyroid is the thyroid stimulating hormone (TSH) [27, 28]. TSH stimulation of the TSH receptor initiates a G-protein-mediated signaling cascade that ultimately results in an increase in NIS mRNA and protein in thyroid follicular cells, and regulates the post-transcriptional phosphorylation and plasma membrane targeting of NIS [29-33]. …”
Section: Structure Function and Regulation Of Nis In The Thyroidmentioning
confidence: 99%