PMID- 23521157 OWN - NLM STAT- MEDLINE DCOM- 20141216 LR - 20211203 IS - 1600-0714 (Electronic) IS - 0904-2512 (Linking) VI - 42 IP - 10 DP - 2013 Nov TI - Abundant expression of mTOR kinase in salivary gland tumors - potentials as therapy target? PG - 769-73 LID - 10.1111/jop.12064 [doi] AB - BACKGROUND: Salivary gland tumors constitute 3-6% of all head and neck neoplasms in adults. Because of limited advances made in the treatment of metastatic disease, the more important is the role of new therapeutic strategies, including molecular therapy. The mammalian target of rapamycin (mTOR) has recently been established as a therapeutic target for several drugs. MATERIAL: Evaluation of phospho-mTOR as a possible therapy target by patients with salivary gland tumors. Immunohistochemical semi-quantitative analyses of the expression of phospho-mTOR(Ser2448) were processed on a tissue microarray containing samples from more than 900 patients. For statistical analysis, contingency table and chi-squared test (likelihood) were used. RESULTS: We observed at least weak phospho-mTOR expression in 25.6-41.2% of all 4 histological adenoma and in 36.8-61.6% of all 11 histological carcinoma subtypes analyzed. No association was seen between phospho-mTOR expression and tumor grade in mucoepidermoid carcinomas. CONCLUSION: In conjunction with literature data providing the evidence for a functional role of mTOR in salivary gland tumors, we conclude that treatment with mTOR-antagonists might potentially also be efficient in wide variety of salivary gland carcinomas. CI - (c) 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Clauditz, Till Sebastian AU - Clauditz TS AD - Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Gontarewicz, Artur AU - Gontarewicz A FAU - Bokemeyer, Carsten AU - Bokemeyer C FAU - Sauter, Guido AU - Sauter G FAU - Knecht, Rainald AU - Knecht R FAU - Munscher, Adrian AU - Munscher A FAU - Wilczak, Waldemar AU - Wilczak W LA - eng PT - Journal Article DEP - 20130325 PL - Denmark TA - J Oral Pathol Med JT - Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology JID - 8911934 RN - 452VLY9402 (Serine) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Adenoma/classification/enzymology MH - Adult MH - Carcinoma/classification/enzymology MH - Carcinoma, Mucoepidermoid/enzymology MH - Female MH - Gene Expression Regulation, Enzymologic MH - Humans MH - Male MH - Molecular Targeted Therapy MH - Parotid Neoplasms/enzymology MH - Phosphorylation MH - Salivary Gland Neoplasms/*enzymology MH - Salivary Glands, Minor/enzymology MH - Serine MH - TOR Serine-Threonine Kinases/*analysis/antagonists & inhibitors MH - Tissue Array Analysis OTO - NOTNLM OT - mammalian target of rapamycin OT - molecular therapy OT - phospho-mTOR OT - salivary gland tumors OT - target of rapamycin EDAT- 2013/03/26 06:00 MHDA- 2014/12/17 06:00 CRDT- 2013/03/26 06:00 PHST- 2013/02/28 00:00 [accepted] PHST- 2013/03/26 06:00 [entrez] PHST- 2013/03/26 06:00 [pubmed] PHST- 2014/12/17 06:00 [medline] AID - 10.1111/jop.12064 [doi] PST - ppublish SO - J Oral Pathol Med. 2013 Nov;42(10):769-73. doi: 10.1111/jop.12064. Epub 2013 Mar 25.