PMID- 19615795 OWN - NLM STAT- MEDLINE DCOM- 20100818 LR - 20211203 IS - 1532-1940 (Electronic) IS - 0266-4356 (Linking) VI - 48 IP - 4 DP - 2010 Jun TI - Mammalian target of rapamycin (mTOR) is involved in the survival of cells mediated by chemokine receptor 7 through PI3K/Akt in metastatic squamous cell carcinoma of the head and neck. PG - 291-6 LID - 10.1016/j.bjoms.2009.06.007 [doi] AB - Metastatic squamous cell carcinoma (SCC) of the head and neck expresses chemokine receptor 7 (CCR7), which activates phosphoinositide-3 kinase (PI3K) to promote invasion and survival of SCC cells in the head and neck. We hypothesised that mammalian target of rapamycin (mTOR) may be the downstream molecule of the CCR7-PI3K pathway. Results have shown that interaction between CCR7 and its ligand CCL19 induces the phosphorylation of mTOR and its target p70s6k. This phosphorylation is abolished by inhibition of CCR7 and PI3K/Akt, indicating that mTOR is involved in the CCR7-PI3K cascade. The inhibitors of mTOR and CCR7-PI3K also lead to a significant increase in CCL19-induced death, apoptosis, and cell-cycle arrest of metastatic SCC cells in the head and neck. Taken together, our data indicate the important part played by mTOR in CCR7-induced survival of such SCC cells. CI - Copyright 2009 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved. FAU - Liu, Fa-Yu AU - Liu FY AD - Oral and Maxillofacial Tumor Center, Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, No. 117, Nanjing Bei Jie, Heping District, Shenyang, Liaoning 110002, China. FAU - Zhao, Zhen-Jin AU - Zhao ZJ FAU - Li, Peng AU - Li P FAU - Ding, Xue AU - Ding X FAU - Zong, Zhi-Hong AU - Zong ZH FAU - Sun, Chang-Fu AU - Sun CF LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090716 PL - Scotland TA - Br J Oral Maxillofac Surg JT - The British journal of oral & maxillofacial surgery JID - 8405235 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antineoplastic Agents) RN - 0 (CCL19 protein, human) RN - 0 (CCR7 protein, human) RN - 0 (Chemokine CCL19) RN - 0 (Chromones) RN - 0 (Coloring Agents) RN - 0 (Enzyme Inhibitors) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Morpholines) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Receptors, CCR7) RN - 0 (Tetrazolium Salts) RN - 0 (Thiazoles) RN - 31M2U1DVID (2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EUY85H477I (thiazolyl blue) RN - Q20Q21Q62J (Cisplatin) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Antibodies, Monoclonal MH - Antineoplastic Agents/pharmacology MH - Apoptosis/drug effects MH - Blotting, Western MH - Carcinoma, Squamous Cell/pathology/*secondary MH - Cell Cycle/drug effects MH - Cell Death/drug effects MH - Cell Line, Tumor MH - Cell Survival/drug effects/physiology MH - Chemokine CCL19/physiology MH - Chromones/pharmacology MH - Cisplatin/pharmacology MH - Coloring Agents MH - Enzyme Inhibitors/pharmacology MH - Flow Cytometry MH - Head and Neck Neoplasms/pathology/*secondary MH - Humans MH - Intracellular Signaling Peptides and Proteins/antagonists & inhibitors/*physiology MH - Morpholines/pharmacology MH - Neoplasm Invasiveness MH - Phosphatidylinositol 3-Kinases/*physiology MH - Phosphoinositide-3 Kinase Inhibitors MH - Phosphorylation MH - Polymerase Chain Reaction/methods MH - Protein Serine-Threonine Kinases/antagonists & inhibitors/*physiology MH - Proto-Oncogene Proteins c-akt/antagonists & inhibitors/*physiology MH - Receptors, CCR7/antagonists & inhibitors/*physiology MH - Ribosomal Protein S6 Kinases, 70-kDa/physiology MH - Sirolimus/pharmacology MH - TOR Serine-Threonine Kinases MH - Tetrazolium Salts MH - Thiazoles EDAT- 2009/07/21 09:00 MHDA- 2010/08/19 06:00 CRDT- 2009/07/21 09:00 PHST- 2009/06/11 00:00 [accepted] PHST- 2009/07/21 09:00 [entrez] PHST- 2009/07/21 09:00 [pubmed] PHST- 2010/08/19 06:00 [medline] AID - S0266-4356(09)00224-1 [pii] AID - 10.1016/j.bjoms.2009.06.007 [doi] PST - ppublish SO - Br J Oral Maxillofac Surg. 2010 Jun;48(4):291-6. doi: 10.1016/j.bjoms.2009.06.007. Epub 2009 Jul 16.