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Published in: BMC Cancer 1/2021

01-12-2021 | Human Papillomavirus | Research article

Raptor and rictor expression in patients with human papillomavirus-related oropharyngeal squamous cell carcinoma

Authors: Shunsuke Kondo, Hitoshi Hirakawa, Taro Ikegami, Takayuki Uehara, Shinya Agena, Jin Uezato, Hidetoshi Kinjyo, Noritomo Kise, Yukashi Yamashita, Katsunori Tanaka, Narumi Hasegawa, Asanori Kiyuna, Hiroyuki Maeda, Mikio Suzuki, Akira Gahana

Published in: BMC Cancer | Issue 1/2021

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Abstract

Background

Despite reports of a link between human papillomavirus (HPV) infection and mechanistic target of rapamycin (mTOR) signaling activation, the role of the mTOR pathway, especially raptor and rictor, in HPV-related head and neck cancer is still unclear. The aim of the present study was to elucidate the role of the mTOR pathway in HPV-related oropharyngeal squamous cell carcinoma (OPSCC).

Methods

The present study involved two strategies. The first was to investigate the activity of mTOR and mTOR-related complexes in high-risk HPV-positive (UM-SCC47 and CaSki) and HPV-negative (SCC-4 and SAS) cancer cell lines. The second was to elucidate mTOR complex expression in 80 oropharyngeal cancer tissues and to examine the relationship between mTOR complex expression and survival in patients with OPSCC.

Results

The UM-SCC47 and CaSki cell lines showed high gene and protein expression of raptor. They also exhibited G1/S and G2/M phase cell cycle arrest following 24 h incubation with 6 μM temsirolimus, a rapamycin analog, and temsirolimus administration inhibited their growth. HPV-related OPSCC samples showed high gene and protein expression of raptor and rictor compared with HPV-unrelated OPSCC. In addition, HPV-related OPSCC patients with high raptor and rictor expression tended to have a worse prognosis than those with low or medium expression.

Conclusions

These results suggest that raptor and rictor have important roles in HPV-related OPSCC and that temsirolimus is a potential therapeutic agent for patients with HPV-related OPSCC. This is the first report to reveal the overexpression of raptor and rictor in HPV-related OPSCC.
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Literature
2.
go back to reference Kim LC, Cook RS, Chen J. mTORC1 and mTORC2 in cancer and the tumor microenvironment. Oncogene. 2017;36:2191–201.PubMedCrossRef Kim LC, Cook RS, Chen J. mTORC1 and mTORC2 in cancer and the tumor microenvironment. Oncogene. 2017;36:2191–201.PubMedCrossRef
3.
go back to reference Aylett CH, Sauer E, Imseng S, Boehringer D, Hall MN, Ban N, et al. Architecture of human mTOR complex 1. Science. 2016;351:48–52.PubMedCrossRef Aylett CH, Sauer E, Imseng S, Boehringer D, Hall MN, Ban N, et al. Architecture of human mTOR complex 1. Science. 2016;351:48–52.PubMedCrossRef
6.
go back to reference Masri J, Bernath A, Martin J, Jo OD, Vartanian R, Funk A, et al. mTORC2 activity is elevated in gliomas and promotes growth and cell motility via overexpression of rictor. Cancer Res. 2007;67:11712–20.PubMedCrossRef Masri J, Bernath A, Martin J, Jo OD, Vartanian R, Funk A, et al. mTORC2 activity is elevated in gliomas and promotes growth and cell motility via overexpression of rictor. Cancer Res. 2007;67:11712–20.PubMedCrossRef
8.
go back to reference Hsieh AC, Costa M, Zollo O, Davis C, Feldman ME, Testa JR, et al. Genetic dissection of the oncogenic mTOR pathway reveals druggable addiction to translational control via 4EBP-eIF4E. Cancer Cell. 2010;17:249–61.PubMedPubMedCentralCrossRef Hsieh AC, Costa M, Zollo O, Davis C, Feldman ME, Testa JR, et al. Genetic dissection of the oncogenic mTOR pathway reveals druggable addiction to translational control via 4EBP-eIF4E. Cancer Cell. 2010;17:249–61.PubMedPubMedCentralCrossRef
9.
go back to reference Nojima H, Tokunaga C, Eguchi S, Oshiro N, Hidayat S, Yoshino K, et al. The mammalian target of rapamycin (mTOR) partner, raptor, binds the mTOR substrates p70 S6 kinase and 4E-BP1 through their TOR signaling (TOS) motif. J Biol Chem. 2003;278:15461–4.PubMedCrossRef Nojima H, Tokunaga C, Eguchi S, Oshiro N, Hidayat S, Yoshino K, et al. The mammalian target of rapamycin (mTOR) partner, raptor, binds the mTOR substrates p70 S6 kinase and 4E-BP1 through their TOR signaling (TOS) motif. J Biol Chem. 2003;278:15461–4.PubMedCrossRef
10.
go back to reference Hietakangas V, Cohen SM. TOR complex 2 is needed for cell cycle progression and anchorage-independent growth of MCF7 and PC3 tumor cells. BMC Cancer. 2008;8:282.PubMedPubMedCentralCrossRef Hietakangas V, Cohen SM. TOR complex 2 is needed for cell cycle progression and anchorage-independent growth of MCF7 and PC3 tumor cells. BMC Cancer. 2008;8:282.PubMedPubMedCentralCrossRef
12.
go back to reference Hudes G, Carducci M, Tomczak P, Dutcher J, Figlin R, Kappor A, et al. Temsirolimus, interferon alfa, or both for advanced renal-cell carcinoma. N Engl J Med. 2007;356:2271–81.PubMedCrossRef Hudes G, Carducci M, Tomczak P, Dutcher J, Figlin R, Kappor A, et al. Temsirolimus, interferon alfa, or both for advanced renal-cell carcinoma. N Engl J Med. 2007;356:2271–81.PubMedCrossRef
13.
go back to reference Bray F, Ferlay J, Soerjomataram I, Siegel RL, Torre LA, Jemal A. Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2018;68:394–424.CrossRefPubMed Bray F, Ferlay J, Soerjomataram I, Siegel RL, Torre LA, Jemal A. Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2018;68:394–424.CrossRefPubMed
14.
go back to reference Yamashita Y, Ikegami T, Suzuki M, Hirakawa H, Maeda H, Yamada S, et al. Hypopharyngeal cancer risk in Japanese: genetic polymorphisms related to the metabolism of alcohol- and tobacco-associated carcinogens. J Cancer Res Ther. 2019;15:556–63.PubMedCrossRef Yamashita Y, Ikegami T, Suzuki M, Hirakawa H, Maeda H, Yamada S, et al. Hypopharyngeal cancer risk in Japanese: genetic polymorphisms related to the metabolism of alcohol- and tobacco-associated carcinogens. J Cancer Res Ther. 2019;15:556–63.PubMedCrossRef
15.
go back to reference Yamashita Y, Ikegami T, Hirakawa H, Uehara T, Deng Z, Agena S, et al. Staging and prognosis of oropharyngeal carcinoma according to the 8th edition of the American joint committee on cancer staging manual in human papillomavirus infection. Eur Arch Otorhinolaryngol. 2019;276:827–36.PubMedCrossRef Yamashita Y, Ikegami T, Hirakawa H, Uehara T, Deng Z, Agena S, et al. Staging and prognosis of oropharyngeal carcinoma according to the 8th edition of the American joint committee on cancer staging manual in human papillomavirus infection. Eur Arch Otorhinolaryngol. 2019;276:827–36.PubMedCrossRef
16.
go back to reference Chaturvedi AK, Engels EA, Pfeiffer RM, Hernandez BY, Xiao W, Kim E, et al. Human papillomavirus and rising oropharyngeal cancer incidence in the United States. J Clin Oncol. 2011;29:4294–301.PubMedPubMedCentralCrossRef Chaturvedi AK, Engels EA, Pfeiffer RM, Hernandez BY, Xiao W, Kim E, et al. Human papillomavirus and rising oropharyngeal cancer incidence in the United States. J Clin Oncol. 2011;29:4294–301.PubMedPubMedCentralCrossRef
17.
go back to reference Deng Z, Hasegawa M, Aoki K, Matayoshi S, Kiyuna A, Yamashita Y, et al. A comprehensive evaluation of human papillomavirus positive status and p16INK4a overexpression as a prognostic biomarker in head and neck squamous cell carcinoma. Int J Oncol. 2014;45:67–76.PubMedPubMedCentralCrossRef Deng Z, Hasegawa M, Aoki K, Matayoshi S, Kiyuna A, Yamashita Y, et al. A comprehensive evaluation of human papillomavirus positive status and p16INK4a overexpression as a prognostic biomarker in head and neck squamous cell carcinoma. Int J Oncol. 2014;45:67–76.PubMedPubMedCentralCrossRef
18.
go back to reference Ang KK, Sturgis EM. Human papillomavirus as a marker of the natural history and response to therapy of head and neck squamous cell carcinoma. Semin Radiat Oncol. 2012;22:128–42.PubMedCrossRef Ang KK, Sturgis EM. Human papillomavirus as a marker of the natural history and response to therapy of head and neck squamous cell carcinoma. Semin Radiat Oncol. 2012;22:128–42.PubMedCrossRef
19.
go back to reference O'Sullivan B, Huang SH, Su J, Garden AS, Sturgis EM, Dahlstrom K, et al. Development and validation of a staging system for HPV-related oropharyngeal cancer by the international collaboration on Oropharyngeal cancer network for staging (ICON-S): a multicentre cohort study. Lancet Oncol. 2016;17:440–51.PubMedCrossRef O'Sullivan B, Huang SH, Su J, Garden AS, Sturgis EM, Dahlstrom K, et al. Development and validation of a staging system for HPV-related oropharyngeal cancer by the international collaboration on Oropharyngeal cancer network for staging (ICON-S): a multicentre cohort study. Lancet Oncol. 2016;17:440–51.PubMedCrossRef
20.
go back to reference Doescher J, Veit JA, Hoffmann TK. The 8th edition of the AJCC cancer staging manual : updates in otorhinolaryngology, head and neck surgery. HNO. 2017;65:956–61.PubMedCrossRef Doescher J, Veit JA, Hoffmann TK. The 8th edition of the AJCC cancer staging manual : updates in otorhinolaryngology, head and neck surgery. HNO. 2017;65:956–61.PubMedCrossRef
21.
go back to reference Orlandi E, Licitra L. Personalized medicine and the contradictions and limits of first-generation deescalation trials in patients with human papillomavirus-positive oropharyngeal cancer. JAMA Otolaryngol Head Neck Surg. 2018;144:99–100.PubMedCrossRef Orlandi E, Licitra L. Personalized medicine and the contradictions and limits of first-generation deescalation trials in patients with human papillomavirus-positive oropharyngeal cancer. JAMA Otolaryngol Head Neck Surg. 2018;144:99–100.PubMedCrossRef
22.
go back to reference Masterson L, Moualed D, Liu ZW, Howard JE, Dwivedi RC, Tysome JR, et al. De-escalation treatment protocols for human papillomavirus-associated oropharyngeal squamous cell carcinoma: a systematic review and meta-analysis of current clinical trials. Eur J Cancer. 2014;50:2636–48.PubMedCrossRef Masterson L, Moualed D, Liu ZW, Howard JE, Dwivedi RC, Tysome JR, et al. De-escalation treatment protocols for human papillomavirus-associated oropharyngeal squamous cell carcinoma: a systematic review and meta-analysis of current clinical trials. Eur J Cancer. 2014;50:2636–48.PubMedCrossRef
23.
go back to reference Seiwert TY, Foster CC, Blair EA, Karrison TG, Agrawal N, Melotek JM, et al. OPTIMA: a phase II dose and volume de-escalation trial for human papillomavirus-positive oropharyngeal cancer. Ann Oncol. 2019;30:297–302.PubMedCrossRef Seiwert TY, Foster CC, Blair EA, Karrison TG, Agrawal N, Melotek JM, et al. OPTIMA: a phase II dose and volume de-escalation trial for human papillomavirus-positive oropharyngeal cancer. Ann Oncol. 2019;30:297–302.PubMedCrossRef
24.
go back to reference Molinolo AA, Marsh C, El Dinali M, Gangane N, Jennison K, Hewitt S, et al. mTOR as a molecular target in HPV-associated oral and cervical squamous carcinomas. Clin Cancer Res. 2012;18:2558–68.PubMedPubMedCentralCrossRef Molinolo AA, Marsh C, El Dinali M, Gangane N, Jennison K, Hewitt S, et al. mTOR as a molecular target in HPV-associated oral and cervical squamous carcinomas. Clin Cancer Res. 2012;18:2558–68.PubMedPubMedCentralCrossRef
26.
go back to reference Spangle JM, Munger K. The human papillomavirus type 16 E6 oncoprotein activates mTORC1 signaling and increases protein synthesis. J Virol. 2010;84:9398–407.PubMedPubMedCentralCrossRef Spangle JM, Munger K. The human papillomavirus type 16 E6 oncoprotein activates mTORC1 signaling and increases protein synthesis. J Virol. 2010;84:9398–407.PubMedPubMedCentralCrossRef
27.
go back to reference Simpson DR, Mell LK, Cohen EE. Targeting the PI3K/AKT/mTOR pathway in squamous cell carcinoma of the head and neck. Oral Oncol. 2015;51:291–8.PubMedCrossRef Simpson DR, Mell LK, Cohen EE. Targeting the PI3K/AKT/mTOR pathway in squamous cell carcinoma of the head and neck. Oral Oncol. 2015;51:291–8.PubMedCrossRef
28.
go back to reference Nguyen SA, Walker D, Gillespie MB, Gutkind JS, Day TA. mTOR inhibitors and its role in the treatment of head and neck squamous cell carcinoma. Curr Treat Options Oncol. 2012;13:71–81.PubMedCrossRef Nguyen SA, Walker D, Gillespie MB, Gutkind JS, Day TA. mTOR inhibitors and its role in the treatment of head and neck squamous cell carcinoma. Curr Treat Options Oncol. 2012;13:71–81.PubMedCrossRef
29.
go back to reference Coppock JD, Wieking BG, Molinolo AA, Gutkind JS, Miskimins WK, Lee JH. Improved clearance during treatment of HPV-positive head and neck cancer through mTOR inhibition. Neoplasia. 2013;15:620–30.PubMedPubMedCentralCrossRef Coppock JD, Wieking BG, Molinolo AA, Gutkind JS, Miskimins WK, Lee JH. Improved clearance during treatment of HPV-positive head and neck cancer through mTOR inhibition. Neoplasia. 2013;15:620–30.PubMedPubMedCentralCrossRef
30.
go back to reference Coppock JD, Lee JH. mTOR, metabolism, and the immune response in HPV-positive head and neck squamous cell cancer. World J Otorhinolaryngol Head Neck Surg. 2016;2:76–83.PubMedPubMedCentralCrossRef Coppock JD, Lee JH. mTOR, metabolism, and the immune response in HPV-positive head and neck squamous cell cancer. World J Otorhinolaryngol Head Neck Surg. 2016;2:76–83.PubMedPubMedCentralCrossRef
31.
go back to reference Bossler F, Hoppe-Seyler K, Hoppe-Seyler F. PI3K/AKT/mTOR signaling regulates the virus/host cell crosstalk in HPV-positive cervical cancer cells. Int J Mol Sci. 2019;20:2188.PubMedCentralCrossRef Bossler F, Hoppe-Seyler K, Hoppe-Seyler F. PI3K/AKT/mTOR signaling regulates the virus/host cell crosstalk in HPV-positive cervical cancer cells. Int J Mol Sci. 2019;20:2188.PubMedCentralCrossRef
32.
go back to reference Grunwald V, Keilholz U, Boehm A, Guntinas-Lichius O, Hennemann B, Schmoll HJ, et al. TEMHEAD: a single-arm multicentre phase II study of temsirolimus in platin- and cetuximab refractory recurrent and/or metastatic squamous cell carcinoma of the head and neck (SCCHN) of the German SCCHN group (AIO). Ann Oncol. 2015;26:561–7.PubMedCrossRef Grunwald V, Keilholz U, Boehm A, Guntinas-Lichius O, Hennemann B, Schmoll HJ, et al. TEMHEAD: a single-arm multicentre phase II study of temsirolimus in platin- and cetuximab refractory recurrent and/or metastatic squamous cell carcinoma of the head and neck (SCCHN) of the German SCCHN group (AIO). Ann Oncol. 2015;26:561–7.PubMedCrossRef
33.
go back to reference Ikegami T, Uehara T, Deng Z, Kondo S, Maeda H, Kiyuna A, et al. Detection of human papillomavirus in branchial cleft cysts. Oncol Lett. 2018;16:1571–8.PubMedPubMedCentral Ikegami T, Uehara T, Deng Z, Kondo S, Maeda H, Kiyuna A, et al. Detection of human papillomavirus in branchial cleft cysts. Oncol Lett. 2018;16:1571–8.PubMedPubMedCentral
34.
go back to reference Mukhopadhyay S, Chatterjee A, Kogan D, Patel D, Foster DA. 5-Aminoimidazole-4-carboxamide-1-beta-4-ribofuranoside (AICAR) enhances the efficacy of rapamycin in human cancer cells. Cell Cycle. 2015;14:3331–9.PubMedPubMedCentralCrossRef Mukhopadhyay S, Chatterjee A, Kogan D, Patel D, Foster DA. 5-Aminoimidazole-4-carboxamide-1-beta-4-ribofuranoside (AICAR) enhances the efficacy of rapamycin in human cancer cells. Cell Cycle. 2015;14:3331–9.PubMedPubMedCentralCrossRef
35.
go back to reference Yellen P, Saqcena M, Salloum D, Feng J, Preda A, Xu L, et al. High-dose rapamycin induces apoptosis in human cancer cells by dissociating mTOR complex 1 and suppressing phosphorylation of 4E-BP1. Cell Cycle. 2011;10:3948–56.PubMedPubMedCentralCrossRef Yellen P, Saqcena M, Salloum D, Feng J, Preda A, Xu L, et al. High-dose rapamycin induces apoptosis in human cancer cells by dissociating mTOR complex 1 and suppressing phosphorylation of 4E-BP1. Cell Cycle. 2011;10:3948–56.PubMedPubMedCentralCrossRef
36.
go back to reference Mukhopadhyay S, Saqcena M, Chatterjee A, Garcia A, Fias MA, Foster DA. Reciprocal regulation of AMP-activated protein kinase and phospholipase D. J Bio Chem. 2015;290:6986–93.CrossRef Mukhopadhyay S, Saqcena M, Chatterjee A, Garcia A, Fias MA, Foster DA. Reciprocal regulation of AMP-activated protein kinase and phospholipase D. J Bio Chem. 2015;290:6986–93.CrossRef
37.
go back to reference O'Reilly KE, Rojo F, She QB, Solit D, Mills GB, Smith D, et al. mTOR inhibition induces upstream receptor tyrosine kinase signaling and activates Akt. Cancer Res. 2006;66:1500–8.PubMedPubMedCentralCrossRef O'Reilly KE, Rojo F, She QB, Solit D, Mills GB, Smith D, et al. mTOR inhibition induces upstream receptor tyrosine kinase signaling and activates Akt. Cancer Res. 2006;66:1500–8.PubMedPubMedCentralCrossRef
38.
go back to reference Sun SY, Rosenberg LM, Wang X, Zhou Z, Yue P, Fu H, et al. Activation of Akt and eIF4E survival pathways by rapamycin-mediated mammalian target of rapamycin inhibition. Cancer Res. 2005;65:7052–8.PubMedCrossRef Sun SY, Rosenberg LM, Wang X, Zhou Z, Yue P, Fu H, et al. Activation of Akt and eIF4E survival pathways by rapamycin-mediated mammalian target of rapamycin inhibition. Cancer Res. 2005;65:7052–8.PubMedCrossRef
39.
go back to reference Dai Q, Xie F, Han Y, Ma X, Zhou S, Jiang L, et al. Inactivation of regulatory-associated protein of mTOR (raptor)/mammalian target of rapamycin complex 1 (mTORC1) signaling in osteoclasts increases bone mass by inhibiting osteoclast differentiation in mice. J Biol Chem. 2017;292:196–204.PubMedCrossRef Dai Q, Xie F, Han Y, Ma X, Zhou S, Jiang L, et al. Inactivation of regulatory-associated protein of mTOR (raptor)/mammalian target of rapamycin complex 1 (mTORC1) signaling in osteoclasts increases bone mass by inhibiting osteoclast differentiation in mice. J Biol Chem. 2017;292:196–204.PubMedCrossRef
40.
go back to reference Wu WK, Lee CW, Cho CH, Chan FK, Yu J, Sung JJ. RNA interference targeting raptor inhibits proliferation of gastric cancer cells. Exp Cell Res. 2011;317:1353–8.PubMedCrossRef Wu WK, Lee CW, Cho CH, Chan FK, Yu J, Sung JJ. RNA interference targeting raptor inhibits proliferation of gastric cancer cells. Exp Cell Res. 2011;317:1353–8.PubMedCrossRef
41.
go back to reference Baselga J, Campone M, Piccart M, Burris HA 3rd, Rugo HS, Sahmoud T, et al. Everolimus in postmenopausal hormone-receptor-positive advanced breast cancer. N Engl J Med. 2012;366:520–9.PubMedCrossRef Baselga J, Campone M, Piccart M, Burris HA 3rd, Rugo HS, Sahmoud T, et al. Everolimus in postmenopausal hormone-receptor-positive advanced breast cancer. N Engl J Med. 2012;366:520–9.PubMedCrossRef
42.
go back to reference Motzer RJ, Escudier B, Oudard S, Hutson TE, Porta C, Bracarda S, et al. Efficacy of everolimus in advanced renal cell carcinoma: a double-blind, randomised, placebo-controlled phase III trial. Lancet. 2008;372:449–56.PubMedCrossRef Motzer RJ, Escudier B, Oudard S, Hutson TE, Porta C, Bracarda S, et al. Efficacy of everolimus in advanced renal cell carcinoma: a double-blind, randomised, placebo-controlled phase III trial. Lancet. 2008;372:449–56.PubMedCrossRef
43.
go back to reference Marques AE, Elias ST, Porporatti AL, Castilho RM, Squarize CH, De Luca CG, et al. mTOR pathway protein immunoexpression as a prognostic factor for survival in head and neck cancer patients: a systematic review and meta-analysis. J Oral Pathol Med. 2016;45:319–28.PubMedCrossRef Marques AE, Elias ST, Porporatti AL, Castilho RM, Squarize CH, De Luca CG, et al. mTOR pathway protein immunoexpression as a prognostic factor for survival in head and neck cancer patients: a systematic review and meta-analysis. J Oral Pathol Med. 2016;45:319–28.PubMedCrossRef
44.
go back to reference Hara K, Mruki Y, Long X, Yoshino K, Oshiro N, Hidayat S, et al. Raptor, binding rartner of target of rapamycin (TOR), mediates TOR action. Cell. 2002;110:117–89.CrossRef Hara K, Mruki Y, Long X, Yoshino K, Oshiro N, Hidayat S, et al. Raptor, binding rartner of target of rapamycin (TOR), mediates TOR action. Cell. 2002;110:117–89.CrossRef
45.
go back to reference Elghazi L, Blandino-Rosano M, Alejandro E, Cras-Meneur C, Bernal-Mizrachi E. Role of nutrients and mTOR signaling in the regulation of pancreatic progenitors development. Mol Metab. 2017;6:560–73.PubMedPubMedCentralCrossRef Elghazi L, Blandino-Rosano M, Alejandro E, Cras-Meneur C, Bernal-Mizrachi E. Role of nutrients and mTOR signaling in the regulation of pancreatic progenitors development. Mol Metab. 2017;6:560–73.PubMedPubMedCentralCrossRef
46.
go back to reference Sun D, Liu H, Dai X, Zheng X, Yan J, Wei R, et al. Aspirin disrupts the mTOR-raptor complex and potentiates the anti-cancer activities of sorafenib via mTORC1 inhibition. Cancer Lett. 2017;406:105–15.PubMedCrossRef Sun D, Liu H, Dai X, Zheng X, Yan J, Wei R, et al. Aspirin disrupts the mTOR-raptor complex and potentiates the anti-cancer activities of sorafenib via mTORC1 inhibition. Cancer Lett. 2017;406:105–15.PubMedCrossRef
47.
go back to reference Koo J, Wang X, Owonikoko T, Ramalingam S, Khuri F, Sun S. GSK3 is required for rapalogs to induce degradation of some oncogenic proteins and to suppress cancer cell growth. Oncotarget. 2015;6:8974–87.PubMedPubMedCentralCrossRef Koo J, Wang X, Owonikoko T, Ramalingam S, Khuri F, Sun S. GSK3 is required for rapalogs to induce degradation of some oncogenic proteins and to suppress cancer cell growth. Oncotarget. 2015;6:8974–87.PubMedPubMedCentralCrossRef
48.
go back to reference Kaibori M, Shikata N, Sakaguchi T, Ishizaki M, Matsui K, Iida H, et al. Influence of Rictor and raptor expression of mTOR signaling on Long-term outcomes of patients with hepatocellular carcinoma. Dig Dis Sci. 2015;60:919–28.PubMedCrossRef Kaibori M, Shikata N, Sakaguchi T, Ishizaki M, Matsui K, Iida H, et al. Influence of Rictor and raptor expression of mTOR signaling on Long-term outcomes of patients with hepatocellular carcinoma. Dig Dis Sci. 2015;60:919–28.PubMedCrossRef
49.
go back to reference Dunn LA, Fury MG, Xiao H, Baxi SS, Sherman EJ, Korte S, et al. A phase II study of temsirolimus added to low-dose weekly carboplatin and paclitaxel for patients with recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC). Ann Oncol. 2017;28:2533–8.PubMedPubMedCentralCrossRef Dunn LA, Fury MG, Xiao H, Baxi SS, Sherman EJ, Korte S, et al. A phase II study of temsirolimus added to low-dose weekly carboplatin and paclitaxel for patients with recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC). Ann Oncol. 2017;28:2533–8.PubMedPubMedCentralCrossRef
50.
go back to reference Ang KK, Harris J, Wheeler R, Weber R, DI R, Ngyen-Tan P, et al. Human papillomavirus and survival of pattents with oropharyngeal cancer. N Engl J Med. 2010;363:24–35.PubMedPubMedCentralCrossRef Ang KK, Harris J, Wheeler R, Weber R, DI R, Ngyen-Tan P, et al. Human papillomavirus and survival of pattents with oropharyngeal cancer. N Engl J Med. 2010;363:24–35.PubMedPubMedCentralCrossRef
51.
go back to reference Deng Z, Hasegawa M, Yamashita Y, Matayoshi S, Kiyuna A, Agena S, et al. Prognostic value of human papillomavirus and squamous cell carcinoma antigen in head and neck squamous cell carcinoma. Cancer Sci. 2012;103:2127–34.PubMedPubMedCentralCrossRef Deng Z, Hasegawa M, Yamashita Y, Matayoshi S, Kiyuna A, Agena S, et al. Prognostic value of human papillomavirus and squamous cell carcinoma antigen in head and neck squamous cell carcinoma. Cancer Sci. 2012;103:2127–34.PubMedPubMedCentralCrossRef
Metadata
Title
Raptor and rictor expression in patients with human papillomavirus-related oropharyngeal squamous cell carcinoma
Authors
Shunsuke Kondo
Hitoshi Hirakawa
Taro Ikegami
Takayuki Uehara
Shinya Agena
Jin Uezato
Hidetoshi Kinjyo
Noritomo Kise
Yukashi Yamashita
Katsunori Tanaka
Narumi Hasegawa
Asanori Kiyuna
Hiroyuki Maeda
Mikio Suzuki
Akira Gahana
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2021
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-021-07794-9

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