1
|
Goto Y, Koshizuka K, Ando T, Izumi H, Wu X, Sato K, Ishikawa T, Ford K, Feng X, Wang Z, Arang N, Allevato MM, Kishore A, Mali P, Gutkind JS. A Kinome-Wide Synthetic Lethal CRISPR/Cas9 Screen Reveals That mTOR Inhibition Prevents Adaptive Resistance to CDK4/CDK6 Blockade in HNSCC. CANCER RESEARCH COMMUNICATIONS 2024; 4:1850-1862. [PMID: 38954773 PMCID: PMC11284272 DOI: 10.1158/2767-9764.crc-24-0247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/12/2024] [Accepted: 06/28/2024] [Indexed: 07/04/2024]
Abstract
The comprehensive genomic analysis of the head and neck squamous cell carcinoma (HNSCC) oncogenome revealed the frequent loss of p16INK4A (CDKN2A) and amplification of cyclin D1 genes in most human papillomavirus-negative HNSCC lesions. However, cyclin-dependent kinase 4 and 6 (CDK4/6) inhibitors have shown modest effects in the clinic. The aberrant activation of the PI3K/mTOR pathway is highly prevalent in HNSCC, and recent clinical trials have shown promising clinical efficacy of mTOR inhibitors (mTORi) in the neoadjuvant and adjuvant settings but not in patients with advanced HNSCC. By implementing a kinome-wide CRISPR/Cas9 screen, we identified cell-cycle inhibition as a synthetic lethal target for mTORis. A combination of mTORi and palbociclib, a CDK4/6-specific inhibitor, showed strong synergism in HNSCC-derived cells in vitro and in vivo. Remarkably, we found that an adaptive increase in cyclin E1 (CCNE1) expression upon palbociclib treatment underlies the rapid acquired resistance to this CDK4/6 inhibitor. Mechanistically, mTORi inhibits the formation of eIF4G-CCNE1 mRNA complexes, with the consequent reduction in mRNA translation and CCNE1 protein expression. Our findings suggest that mTORi reverts the adaptive resistance to palbociclib. This provides a multimodal therapeutic option for HNSCC by cotargeting mTOR and CDK4/6, which in turn may halt the emergence of palbociclib resistance. SIGNIFICANCE A kinome-wide CRISPR/Cas9 screen identified cell-cycle inhibition as a synthetic lethal target of mTORis. A combination of mTORi and palbociclib, a CDK4/6-specific inhibitor, showed strong synergistic effects in HNSCC. Mechanistically, mTORis inhibited palbociclib-induced increase in CCNE1.
Collapse
Affiliation(s)
- Yusuke Goto
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Keiichi Koshizuka
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Toshinori Ando
- Moores Cancer Center, University of California San Diego, La Jolla, California.
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Hiroki Izumi
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Xingyu Wu
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Kuniaki Sato
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Tomohiko Ishikawa
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Kyle Ford
- Department of Bioengineering, University of California San Diego, San Diego, California.
| | - Xiaodong Feng
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Zhiyong Wang
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Nadia Arang
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Michael M. Allevato
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Ayush Kishore
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| | - Prashant Mali
- Department of Bioengineering, University of California San Diego, San Diego, California.
| | - J. Silvio Gutkind
- Moores Cancer Center, University of California San Diego, La Jolla, California.
| |
Collapse
|
2
|
Zhang Y, Sun Y, Gan J, Zhou H, Guo S, Wang X, Zhang C, Zheng W, Zhao X, Zhang Y, Ning S, Li X. Reconstructing the immunosenescence core pathway reveals global characteristics in pan-cancer. Cancer Immunol Immunother 2023; 72:3693-3705. [PMID: 37608128 PMCID: PMC10992234 DOI: 10.1007/s00262-023-03521-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/10/2023] [Indexed: 08/24/2023]
Abstract
Immunosenescence has been demonstrated to play an important role in tumor progression. However, there is lacking comprehensive analyses of immunosenescence-related pathways. Meanwhile, the sex disparities of immunosenescence in cancer are still poorly understood. In this study, we analyzed the multi-omics data of 12,836 tumor samples, including genomics, transcriptomics, epigenomics, proteomics, and metabolomics. We systematically identified immunosenescence pathways that were disordered across cancer types. The mutations and copy number variations of immunosenescence pathways were found to be more active in pan-cancer. We reconstructed the immunosenescence core pathways (ISC-pathways) to improve the ability of prognostic stratification in 33 cancer types. We also found the head and neck squamous carcinoma (HNSC) contained abundant sex-specific immunosenescence features and showed sex differences in survival. We found that OSI-027 was a potential sex-specific drug in HNSC tumors, which tended to be more effective in male HNSC by targeting the MTOR gene in the PI3K-Akt signaling pathway. In conclusion, our study provided a systematic understanding of immunosenescence pathways and revealed the global characteristics of immunosenescence in pan-cancer. We highlighted MTOR gene could be a powerful immunosenescence biomarker of HNSC that helps to develop sex-specific immunosenescence drugs.
Collapse
Affiliation(s)
- Yakun Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Yue Sun
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Jing Gan
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Hanxiao Zhou
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Shuang Guo
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Xinyue Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Caiyu Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Wen Zheng
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Xiaoxi Zhao
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China
| | - Yunpeng Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China.
| | - Shangwei Ning
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China.
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, China.
| |
Collapse
|
3
|
Zaryouh H, De Pauw I, Baysal H, Melis J, Van den Bossche V, Hermans C, Lau HW, Lambrechts H, Merlin C, Corbet C, Peeters M, Vermorken JB, De Waele J, Lardon F, Wouters A. Establishment of head and neck squamous cell carcinoma mouse models for cetuximab resistance and sensitivity. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2023; 6:709-728. [PMID: 38239393 PMCID: PMC10792481 DOI: 10.20517/cdr.2023.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/07/2023] [Accepted: 10/10/2023] [Indexed: 01/22/2024]
Abstract
Aim: Acquired resistance to the targeted agent cetuximab poses a significant challenge in finding effective anti-cancer treatments for head and neck squamous cell carcinoma (HNSCC). To accurately study novel combination treatments, suitable preclinical mouse models for cetuximab resistance are key yet currently limited. This study aimed to optimize an acquired cetuximab-resistant mouse model, with preservation of the innate immunity, ensuring intact antibody-dependent cellular cytotoxicity (ADCC) functionality. Methods: Cetuximab-sensitive and acquired-resistant HNSCC cell lines, generated in vitro, were subcutaneously engrafted in Rag2 knock-out (KO), BALB/c Nude and CB17 Scid mice with/without Matrigel or Geltrex. Once tumor growth was established, mice were intraperitoneally injected twice a week with cetuximab for a maximum of 3 weeks. In addition, immunohistochemistry was used to evaluate the tumor and its microenvironment. Results: Despite several adjustments in cell number, cell lines and the addition of Matrigel, Rag2 KO and BALB/C Nude mice proved to be unsuitable for xenografting our HNSCC cell lines. Durable tumor growth of resistant SC263-R cells could be induced in CB17 Scid mice. However, these cells had lost their resistance phenotype in vivo. Immunohistochemistry revealed a high infiltration of macrophages in cetuximab-treated SC263-R tumors. FaDu-S and FaDu-R cells successfully engrafted into CB17 Scid mice and maintained their sensitivity/resistance to cetuximab. Conclusion: We have established in vivo HNSCC mouse models with intact ADCC functionality for cetuximab resistance and sensitivity using the FaDu-R and FaDu-S cell lines, respectively. These models serve as valuable tools for investigating cetuximab resistance mechanisms and exploring novel drug combination strategies.
Collapse
Affiliation(s)
- Hannah Zaryouh
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Ines De Pauw
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Hasan Baysal
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Jöran Melis
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Valentin Van den Bossche
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), UCLouvain, Brussels B-1200, Belgium
- Institut Roi Albert II, Department of Medical Oncology, Cliniques Universitaires Saint-Luc, Brussels B-1200, Belgium
| | - Christophe Hermans
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Ho Wa Lau
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Hilde Lambrechts
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Céline Merlin
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Cyril Corbet
- Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), UCLouvain, Brussels B-1200, Belgium
| | - Marc Peeters
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
- Department of Medical Oncology, Antwerp University Hospital, Edegem 2650, Belgium
| | - Jan Baptist Vermorken
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
- Department of Medical Oncology, Antwerp University Hospital, Edegem 2650, Belgium
| | - Jorrit De Waele
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
| | - Filip Lardon
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
- The authors contributed equally
| | - An Wouters
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Campus Drie Eiken, Antwerp 2610, Belgium
- The authors contributed equally
| |
Collapse
|
4
|
Li Q, Tie Y, Alu A, Ma X, Shi H. Targeted therapy for head and neck cancer: signaling pathways and clinical studies. Signal Transduct Target Ther 2023; 8:31. [PMID: 36646686 PMCID: PMC9842704 DOI: 10.1038/s41392-022-01297-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/27/2022] [Accepted: 12/13/2022] [Indexed: 01/17/2023] Open
Abstract
Head and neck cancer (HNC) is malignant, genetically complex and difficult to treat and is the sixth most frequent cancer, with tobacco, alcohol and human papillomavirus being major risk factors. Based on epigenetic data, HNC is remarkably heterogeneous, and treatment remains challenging. There is a lack of significant improvement in survival and quality of life in patients with HNC. Over half of HNC patients experience locoregional recurrence or distal metastasis despite the current multiple traditional therapeutic strategies and immunotherapy. In addition, resistance to chemotherapy, radiotherapy and some targeted therapies is common. Therefore, it is urgent to explore more effective and tolerable targeted therapies to improve the clinical outcomes of HNC patients. Recent targeted therapy studies have focused on identifying promising biomarkers and developing more effective targeted therapies. A well understanding of the pathogenesis of HNC contributes to learning more about its inner association, which provides novel insight into the development of small molecule inhibitors. In this review, we summarized the vital signaling pathways and discussed the current potential therapeutic targets against critical molecules in HNC, as well as presenting preclinical animal models and ongoing or completed clinical studies about targeted therapy, which may contribute to a more favorable prognosis of HNC. Targeted therapy in combination with other therapies and its limitations were also discussed.
Collapse
Affiliation(s)
- Qingfang Li
- grid.13291.380000 0001 0807 1581Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Tie
- grid.13291.380000 0001 0807 1581Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Aqu Alu
- grid.13291.380000 0001 0807 1581Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xuelei Ma
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
| | - Huashan Shi
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
| |
Collapse
|
5
|
Ma H, Liu C, Zhang S, Yuan W, Hu J, Huang D, Zhang X, Liu Y, Qiu Y. miR-328-3p promotes migration and invasion by targeting H2AFX in head and neck squamous cell carcinoma. J Cancer 2021; 12:6519-6530. [PMID: 34659543 PMCID: PMC8489127 DOI: 10.7150/jca.60743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 08/24/2021] [Indexed: 12/18/2022] Open
Abstract
Migration and invasion are the initial step in the metastatic process, while metastasis is responsible for the poor prognosis of head and neck squamous cell carcinoma (HNSCC). Since miRNA has been found as an important regulator of gene expression at the post-transcriptional level in various diseases including carcinoma, exploring the role of miRNA in cancer metastasis will facilitate the target therapy of advanced HNSCC. MiR-328-3p has been reported to be an onco-miRNA or a tumor suppressor in several cancers. However, the role of miR-328-3p in HNSCC migration and invasion remains undefined. In this study, we first demonstrated that miR-328-3p enhanced migration and invasion of HNSCC in vitro, accompanying with a promotion of epithelial-mesenchymal transition (EMT) and mTOR activity. Meanwhile, we confirmed that miR-328-3p directly targeted the 3'UTR of H2A histone family, member X (H2AFX), which served as a tumor suppressor in migration and invasion of HNSCC. Moreover, H2AFX could partially reverse the migration and invasion of HNSCC caused by miR-328-3p. Overall, our results indicated that miR-328-3p enhanced migration and invasion of HNSCC through targeting H2AFX and activated the mTOR pathway.
Collapse
Affiliation(s)
- Huiling Ma
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
| | - Chao Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Shuiting Zhang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Wenhui Yuan
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Junli Hu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Donghai Huang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Xin Zhang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yong Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanzheng Qiu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China.,Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China.,Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
6
|
Zaryouh H, De Pauw I, Baysal H, Peeters M, Vermorken JB, Lardon F, Wouters A. Recent insights in the PI3K/Akt pathway as a promising therapeutic target in combination with EGFR-targeting agents to treat head and neck squamous cell carcinoma. Med Res Rev 2021; 42:112-155. [PMID: 33928670 DOI: 10.1002/med.21806] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/17/2021] [Accepted: 03/31/2021] [Indexed: 12/20/2022]
Abstract
Resistance to therapies targeting the epidermal growth factor receptor (EGFR), such as cetuximab, remains a major roadblock in the search for effective therapeutic strategies in head and neck squamous cell carcinoma (HNSCC). Due to its close interaction with the EGFR pathway, redundant or compensatory activation of the phosphatidylinositol 3-kinase (PI3K)/Akt pathway has been proposed as a major driver of resistance to EGFR inhibitors. Understanding the role of each of the main proteins involved in this pathway is utterly important to develop rational combination strategies able to circumvent resistance. Therefore, the current work reviewed the role of PI3K/Akt pathway proteins, including Ras, PI3K, tumor suppressor phosphatase and tensing homolog, Akt and mammalian target of rapamycin in resistance to anti-EGFR treatment in HNSCC. In addition, we summarize PI3K/Akt pathway inhibitors that are currently under (pre)clinical investigation with focus on overcoming resistance to EGFR inhibitors. In conclusion, genomic alterations in and/or overexpression of one or more of these proteins are common in both human papillomavirus (HPV)-positive and HPV-negative HNSCC tumors. Therefore, downstream effectors of the PI3K/Akt pathway serve as promising drug targets in the search for novel therapeutic strategies that are able to overcome resistance to anti-EGFR treatment. Co-targeting EGFR and the PI3K/Akt pathway can lead to synergistic drug interactions, possibly restoring sensitivity to EGFR inhibitors and hereby improving clinical efficacy. Better understanding of the predictive value of PI3K/Akt pathway alterations is needed to allow the identification of patient populations that might benefit most from these combination strategies.
Collapse
Affiliation(s)
- Hannah Zaryouh
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium
| | - Ines De Pauw
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium
| | - Hasan Baysal
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium
| | - Marc Peeters
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium.,Department of Medical Oncology, Antwerp University Hospital, Antwerp, Belgium
| | - Jan Baptist Vermorken
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium.,Department of Medical Oncology, Antwerp University Hospital, Antwerp, Belgium
| | - Filip Lardon
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium
| | - An Wouters
- Center for Oncological Research (CORE), Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Antwerp, Belgium
| |
Collapse
|
7
|
O’Keefe RA, Bhola NE, Lee DS, Johnson DE, Grandis JR. Interleukin 6 is increased in preclinical HNSCC models of acquired cetuximab resistance, but is not required for maintenance of resistance. PLoS One 2020; 15:e0227261. [PMID: 31914141 PMCID: PMC6948745 DOI: 10.1371/journal.pone.0227261] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 12/16/2019] [Indexed: 01/05/2023] Open
Abstract
The epidermal growth factor receptor inhibitor cetuximab is the only oncogene-targeted agent that has been FDA approved for the treatment of head and neck squamous cell carcinoma (HNSCC). Currently, there are no biomarkers used in the clinic to predict which HNSCC tumors will respond to cetuximab, and even in tumors that regress with treatment, acquired resistance occurs in the majority of cases. Though a number of mechanisms of acquired resistance to cetuximab have been identified in preclinical studies, no therapies targeting these resistance pathways have yet been effectively translated into the clinic. To address this unmet need, we examined the role of the cytokine interleukin 6 (IL-6) in acquired cetuximab resistance in preclinical models of HNSCC. We found that IL-6 secretion was increased in PE/CA-PJ49 cells that had acquired resistance to cetuximab compared to the parental cells from which they were derived. However, addition of exogenous IL-6 to parental cells did not promote cetuximab resistance, and inhibition of the IL-6 pathway did not restore cetuximab sensitivity in the cetuximab-resistant cells. Further examination of the IL-6 pathway revealed that expression of IL6R, which encodes a component of the IL-6 receptor, was decreased in cetuximab-resistant cells compared to parental cells, and that treatment of the cetuximab-resistant cells with exogenous IL-6 did not induce phosphorylation of signal transducer and activator of transcription 3, suggesting that the IL-6 pathway was functionally impaired in the cetuximab-resistant cells. These findings demonstrate that, even if IL-6 is increased in the context of cetuximab resistance, it is not necessarily required for maintenance of the resistant phenotype, and that targeting the IL-6 pathway may not restore sensitivity to cetuximab in cetuximab-refractory HNSCC.
Collapse
MESH Headings
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Carbazoles
- Cell Line, Tumor
- Cetuximab/pharmacology
- Cetuximab/therapeutic use
- Cisplatin/pharmacology
- Cisplatin/therapeutic use
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/immunology
- Drug Screening Assays, Antitumor
- ErbB Receptors/antagonists & inhibitors
- Gene Knockdown Techniques
- Head and Neck Neoplasms/drug therapy
- Head and Neck Neoplasms/immunology
- Head and Neck Neoplasms/pathology
- Humans
- Interleukin-6/genetics
- Interleukin-6/immunology
- Interleukin-6/metabolism
- Phosphorylation
- RNA, Small Interfering/metabolism
- Receptors, Interleukin-6/antagonists & inhibitors
- Receptors, Interleukin-6/genetics
- Receptors, Interleukin-6/immunology
- Receptors, Interleukin-6/metabolism
- Recombinant Proteins/immunology
- STAT3 Transcription Factor/metabolism
- Signal Transduction/drug effects
- Signal Transduction/genetics
- Signal Transduction/immunology
- Squamous Cell Carcinoma of Head and Neck/drug therapy
- Squamous Cell Carcinoma of Head and Neck/immunology
- Squamous Cell Carcinoma of Head and Neck/pathology
Collapse
Affiliation(s)
- Rachel A. O’Keefe
- Department of Otolaryngology–Head and Neck Surgery, University of California San Francisco, San Francisco, CA, United States of America
| | - Neil E. Bhola
- Department of Otolaryngology–Head and Neck Surgery, University of California San Francisco, San Francisco, CA, United States of America
| | - David S. Lee
- Department of Otolaryngology–Head and Neck Surgery, University of California San Francisco, San Francisco, CA, United States of America
| | - Daniel E. Johnson
- Department of Otolaryngology–Head and Neck Surgery, University of California San Francisco, San Francisco, CA, United States of America
| | - Jennifer R. Grandis
- Department of Otolaryngology–Head and Neck Surgery, University of California San Francisco, San Francisco, CA, United States of America
- * E-mail:
| |
Collapse
|
8
|
Bhaoighill MN, Dunlop EA. Mechanistic target of rapamycin inhibitors: successes and challenges as cancer therapeutics. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2019; 2:1069-1085. [PMID: 35582282 PMCID: PMC9019212 DOI: 10.20517/cdr.2019.87] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/18/2019] [Accepted: 11/26/2019] [Indexed: 12/22/2022]
Abstract
Delineating the contributions of specific cell signalling cascades to the development and maintenance of tumours has greatly informed our understanding of tumorigenesis and has advanced the modern era of targeted cancer therapy. It has been revealed that one of the key pathways regulating cell growth, the phosphatidylinositol 3-kinase/mechanistic target of rapamycin (PI3K/mTOR) signalling axis, is commonly dysregulated in cancer. With a specific, well-tolerated inhibitor of mTOR available, the impact of inhibiting this pathway at the level of mTOR has been tested clinically. This review highlights some of the promising results seen with mTOR inhibitors in the clinic and assesses some of the challenges that remain in predicting patient outcome following mTOR-targeted therapy.
Collapse
Affiliation(s)
| | - Elaine A Dunlop
- Division of Cancer and Genetics, Cardiff University, Cardiff, CF14 4XN, UK
| |
Collapse
|
9
|
Coliat P, Ramolu L, Jégu J, Gaiddon C, Jung AC, Pencreach E. Constitutive or Induced HIF-2 Addiction is Involved in Resistance to Anti-EGFR Treatment and Radiation Therapy in HNSCC. Cancers (Basel) 2019; 11:cancers11101607. [PMID: 31640284 PMCID: PMC6827016 DOI: 10.3390/cancers11101607] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/14/2019] [Accepted: 10/17/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND management of head and neck squamous cell carcinomas (HNSCC) include anti-Epidermal Growth Factor Receptor (EGFR) antibodies and radiotherapy, but resistance emerges in most patients. RAS mutations lead to primary resistance to EGFR blockade in metastatic colorectal cancer but are infrequent in HNSCC, suggesting that other mechanisms are implicated. Since hypoxia and Hypoxia Inducible Factor-1 (HIF-1) have been associated with treatment failure and tumor progression, we hypothesized that EGFR/mammalian Target Of Rapamycin (mTOR)/HIF-1 axis inhibition could radiosensitize HNSCC. METHODS We treated the radiosensitive Cal27 used as control, and radioresistant SQ20B and UD-SCC1 cells, in vivo and in vitro, with rapamycin and cetuximab before irradiation and evaluated tumor progression and clonogenic survival. RESULTS Rapamycin and cetuximab inhibited the mTOR/HIF-1α axis, and sensitized the SQ20B cell line to EGFR-inhibition. However, concomitant delivery of radiation to SQ20B xenografts increased tumor relapse frequency, despite effective HIF-1 inhibition. Treatment failure was associated with the induction of HIF-2α expression by cetuximab and radiotherapy. Strikingly, SQ20B and UD-SCC1 cells clonogenic survival dropped <30% after HIF-2α silencing, suggesting a HIF-2-dependent mechanism of oncogenic addiction. CONCLUSIONS altogether, our data suggest that resistance to EGFR inhibition combined with radiotherapy in HNSCC may depend on tumor HIF-2 expression and underline the urgent need to develop novel HIF-2 targeted treatments.
Collapse
Affiliation(s)
- Pierre Coliat
- Centre de Lutte Contre le Cancer Paul Strauss, 67200 Strasbourg, France.
- Service de Pharmacie, Centre de Lutte Contre le Cancer Paul Strauss, 67200 Strasbourg, France.
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
| | - Ludivine Ramolu
- Centre de Lutte Contre le Cancer Paul Strauss, 67200 Strasbourg, France.
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
| | - Jérémie Jégu
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
- Laboratoire d'Épidémiologie et de Santé Publique, Université de Strasbourg, 67200 Strasbourg, France.
- Service de Santé Publique, Hôpitaux Universitaires de Strasbourg, 67200 Strasbourg, France.
| | - Christian Gaiddon
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
| | - Alain C Jung
- Centre de Lutte Contre le Cancer Paul Strauss, 67200 Strasbourg, France.
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
| | - Erwan Pencreach
- Université de Strasbourg, Inserm, UMR_S1113, 67200 Strasbourg, France.
- Laboratoire de Biochimie et Biologie Moléculaire, Hôpitaux Universitaires de Strasbourg, 67200 Strasbourg, France.
| |
Collapse
|
10
|
Wang Z, Valera JC, Zhao X, Chen Q, Gutkind JS. mTOR co-targeting strategies for head and neck cancer therapy. Cancer Metastasis Rev 2018; 36:491-502. [PMID: 28822012 PMCID: PMC5613059 DOI: 10.1007/s10555-017-9688-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common malignancy worldwide. There is an urgent need to develop effective therapeutic approaches to prevent and treat HNSCC. Recent deep sequencing of the HNSCC genomic landscape revealed a multiplicity and diversity of genetic alterations in this malignancy. Although a large variety of specific molecules were found altered in each individual tumor, they all participate in only a handful of driver signaling pathways. Among them, the PI3K/mTOR pathway is the most frequently activated, which plays a central role in cancer initiation and progression. In turn, targeting of mTOR may represent a precision therapeutic approach for HNSCC. Indeed, mTOR inhibition exerts potent anti-tumor activity in HNSCC experimental systems, and mTOR targeting clinical trials show encouraging results. However, advanced HNSCC patients may exhibit unpredictable drug resistance, and the analysis of its molecular basis suggests that co-targeting strategies may provide a more effective option. In addition, although counterintuitive, emerging evidence suggests that mTOR inhibition may enhance the anti-tumor immune response. These new findings raise the possibility that the combination of mTOR inhibitors and immune oncology agents may provide novel precision therapeutic options for HNSCC.
Collapse
Affiliation(s)
- Zhiyong Wang
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA.,State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases,West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | | | - Xuefeng Zhao
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA.,State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases,West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases,West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China.
| | - J Silvio Gutkind
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA.
| |
Collapse
|
11
|
Lv D, Guo L, Zhang T, Huang L. PRAS40 signaling in tumor. Oncotarget 2017; 8:69076-69085. [PMID: 28978182 PMCID: PMC5620322 DOI: 10.18632/oncotarget.17299] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/11/2017] [Indexed: 12/11/2022] Open
Abstract
The proline-rich Akt substrate of 40 kDa (PRAS40) is a substrate of Akt and a component of the mammalian target of rapamycin complex 1 (mTORC1). Locating at the crossroad of the PI3K/Akt pathway and the mTOR pathway, PRAS40 is phosphorylated by growth factors or other stimuli, and regulates the activation of these signaling pathways in turn. PRAS40 plays an important role in metabolic disorders and multiple cancers, and the phosphorylation of PRAS40 is often associated with the tumor progression of melanoma, prostate cancer, etc. PRAS40 promotes tumorigenesis by deregulating cellular proliferation, apoptosis, senescence, metastasis, etc. Herein, we provide an overview on current understandings of PRAS40 signaling in the tumor formation and progression, which suggests that PRAS40 or phospho-PRAS40 could become a novel biomarker and therapeutic target in tumor.
Collapse
Affiliation(s)
- Dan Lv
- Department of Pathophysiology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Lianying Guo
- Department of Pathophysiology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Ting Zhang
- Department of Pathophysiology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Lin Huang
- Department of Pathophysiology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| |
Collapse
|
12
|
Corona SP, Ravelli A, Cretella D, Cappelletti MR, Zanotti L, Dester M, Gobbi A, Petronini PG, Generali D. CDK4/6 inhibitors in HER2-positive breast cancer. Crit Rev Oncol Hematol 2017; 112:208-214. [PMID: 28325261 DOI: 10.1016/j.critrevonc.2017.02.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 10/20/2022] Open
Abstract
Notwithstanding the continuous progress made in cancer treatment in the last 20 years, and the availability of new targeted therapies, metastatic Breast Cancer (BC) is still incurable. Targeting the cell cycle machinery has emerged as an attractive strategy to tackle cancer progression, showing very promising results in the preclinical and clinical settings. The first selective inhibitors of CDK4/6 received breakthrough status and FDA approval in combination with letrozole (February 2015) and fulvestrant (February 2016) as first-line therapy in ER-positive advanced and metastatic BC. Considering the success of this family of compounds in hormone-positive BC, new possible applications are being investigated in other molecular subtypes. This review summarizes the latest findings on the use of CDK4/6 inhibitors in HER2 positive BC.
Collapse
Affiliation(s)
- Silvia Paola Corona
- Peter MacCallum Cancer Centre, Radiation Oncology Department, Moorabbin Campus, East Bentleigh Victoria 3165, Australia.
| | - Andrea Ravelli
- Universita degli Studi di Parma, Department of Clinical and Experimental Medicine, Experimental Oncology Unit, Via Gramsci, 14, Parma, Italy
| | - Daniele Cretella
- Universita degli Studi di Parma, Department of Clinical and Experimental Medicine, Experimental Oncology Unit, Via Gramsci, 14, Parma, Italy
| | - Maria Rosa Cappelletti
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy
| | - Laura Zanotti
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy
| | - Martina Dester
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy
| | - Angela Gobbi
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy
| | - Pier Giorgio Petronini
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy
| | - Daniele Generali
- Azienda Ospedaliera di Cremona, U.O. Multidisciplinare di Patologia Mammaria, U.S. Terapia Molecolare e Farmacogenomica, Cremona, Italy; Universita degli Studi di Trieste, Department of Medical, Surgery and Health Sciences, Trieste, Italy
| |
Collapse
|
13
|
Naruse T, Yanamoto S, Okuyama K, Yamashita K, Omori K, Nakao Y, Yamada SI, Umeda M. Therapeutic implication of mTORC2 in oral squamous cell carcinoma. Oral Oncol 2016; 65:23-32. [PMID: 28109464 DOI: 10.1016/j.oraloncology.2016.12.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/09/2016] [Accepted: 12/14/2016] [Indexed: 12/16/2022]
Abstract
The aim of the present study was to clarify the association of mTORC2 expression with the cancer progression and the anti-tumor effects of Torin-1 alone and combined treatment with Cetuximab in OSCC cells. The expressions of Rictor and SGK1 were immunohistochemically evaluated and the relationships between the expressions of molecular markers and clinicopathological factors were determined. Moreover, OSCC cells were treated with Torin-1, Cetuximab or combined agents, and anti-tumor effects of OSCC cells were examined in vitro and in vivo. Rictor and SGK1 expressions were significantly associated with tumor stage and pattern of invasion in OSCC sections (P<0.05 and P<0.01, respectively). Treatment of OSCC cell lines with Torin-1 resulted in dose and time-dependent inhibition of proliferation with decrease of phosphorylation on downstream molecules. Combined treatment with Torin-1 and Cetuximab resulted in enhanced anti-tumor effects in vitro compared with either agent alone. Furthermore, treatment of mice bearing OSCC xenografts with Torin-1 and Cetuximab also demonstrated a remarked growth inhibition of tumor volumes. The results suggested that new regimens of systemic therapy combined with Cetuximab and Torin-1 may be useful for very advanced OSCC patients.
Collapse
Affiliation(s)
- Tomofumi Naruse
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan.
| | - Souichi Yanamoto
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Kohei Okuyama
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Kentaro Yamashita
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Keisuke Omori
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Yuji Nakao
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Shin-Ichi Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| |
Collapse
|
14
|
Hernandes C, Pereira AMS, Severino P. Compounds From Celastraceae Targeting Cancer Pathways and Their Potential Application in Head and Neck Squamous Cell Carcinoma: A Review. Curr Genomics 2016; 18:60-74. [PMID: 28503090 PMCID: PMC5321769 DOI: 10.2174/1389202917666160803160934] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/28/2015] [Accepted: 11/29/2015] [Indexed: 12/13/2022] Open
Abstract
Squamous cell carcinoma of the head and neck is one of the most common cancer types worldwide. It initiates on the epithelial lining of the upper aerodigestive tract, at most instances as a consequence of tobacco and alcohol consumption. Treatment options based on conventional therapies or targeted therapies under development have limited efficacy due to multiple genetic alterations typically found in this cancer type. Natural products derived from plants often possess biological activities that may be valuable in the development of new therapeutic agents for cancer treatment. Several genera from the family Celastraceae have been studied in this context. This review reports studies on chemical constituents isolated from species from the Celastraceae family targeting cancer mechanisms studied to date. These results are then correlated with molecular characteristics of head and neck squamous cell carcinoma in an attempt to identify constituents with potential application in the treatment of this complex disease at the molecular level.
Collapse
Affiliation(s)
- Camila Hernandes
- aAlbert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, Sao Paulo, Brazil; bDepartment of Biotechnology, Universidade de Ribeirão Preto, Ribeirão Preto, Brazil
| | - Ana Maria Soares Pereira
- aAlbert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, Sao Paulo, Brazil; bDepartment of Biotechnology, Universidade de Ribeirão Preto, Ribeirão Preto, Brazil
| | - Patricia Severino
- aAlbert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, Sao Paulo, Brazil; bDepartment of Biotechnology, Universidade de Ribeirão Preto, Ribeirão Preto, Brazil
| |
Collapse
|
15
|
Schedule-dependent interaction between temsirolimus and cetuximab in head and neck cancer. Anticancer Drugs 2016; 27:533-9. [DOI: 10.1097/cad.0000000000000360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
16
|
Response-adapted volume de-escalation (RAVD) in locally advanced head and neck cancer. Ann Oncol 2016; 27:908-13. [DOI: 10.1093/annonc/mdw051] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/31/2016] [Indexed: 11/15/2022] Open
|
17
|
Bozec A, Ebran N, Radosevic-Robin N, Sudaka A, Monteverde M, Toussan N, Etienne-Grimaldi MC, Nigro CL, Merlano M, Penault-Llorca F, Milano G. Combination of mTOR and EGFR targeting in an orthotopic xenograft model of head and neck cancer. Laryngoscope 2015; 126:E156-63. [PMID: 26597440 DOI: 10.1002/lary.25754] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/09/2015] [Accepted: 09/28/2015] [Indexed: 01/10/2023]
Abstract
OBJECTIVES/HYPOTHESIS Recent preclinical and clinical studies on head and neck squamous cell carcinoma (HNSCC) revealed synergistic effects when combining anti-EGFR agents with conventional chemotherapeutic drugs. Activation of the PI3-kinase/AKT/mTOR signaling pathway has been identified as an important mechanism implicated in tumor progression and resistance to EGFR inhibitors. The aim of this study was to investigate the effects of combining the mTOR inhibitor temsirolimus (Tem) with the anti-EGFR agent cetuximab (Cet) and conventional chemotherapeutic drugs (cisplatin and fluorouracil (C/F)) on an orthotopic model of HNSCC. STUDY DESIGN Preclinical in vivo study. METHODS We evaluated the anti-tumor efficacy (measured tumor volume) of Tem, Cet, and C/F, administered alone or in combination. Investigations were performed using a human HNSCC cell line, CAL33, injected into the mouth floor of nude mice. RESULTS As compared with the control, the combination of Tem and Cet led to the highest tumor inhibition and induced almost complete tumor growth arrest (P = 0.001). Tem significantly enhanced the impact of the Cet-C/F combination on tumor growth (P < 0.001). The highest inhibitory effects of treatments on cell proliferation (Ki67 labeling), MAPK (pP42/44 labeling), and PI3K/AKT/mTOR (pS6R labeling) signaling pathways were found with the Tem-Cet association. CONCLUSION In this orthotopic HNSCC model, the combination of Tem with Cet produced synergistic effects on tumor growth. These results were corroborated by a strong inhibition of both MAPK and PI3K-mTOR signaling pathways. LEVEL OF EVIDENCE N/A.
Collapse
Affiliation(s)
- Alexandre Bozec
- Institut Universitaire de la Face et du Cou, Clermont-Ferrand, France
| | - Nathalie Ebran
- Department of Oncopharmacology, Clermont-Ferrand, France
| | - Nina Radosevic-Robin
- Department of Histopathology, Centre Jean Perrin, Clermont-Ferrand, France.,ERTICa Research Group, University of Auvergne, Clermont-Ferrand, France
| | - Anne Sudaka
- Department of Histopathology, Centre Antoine Lacassagne, Nice cedex, Clermont-Ferrand, France
| | | | - Nicolas Toussan
- Department of Histopathology, Centre Antoine Lacassagne, Nice cedex, Clermont-Ferrand, France
| | | | | | - Marco Merlano
- Department of Medical Oncology, S. Croce General Hospital, Cuneo, Italy
| | - Frédérique Penault-Llorca
- Department of Histopathology, Centre Jean Perrin, Clermont-Ferrand, France.,ERTICa Research Group, University of Auvergne, Clermont-Ferrand, France
| | - Gérard Milano
- Department of Oncopharmacology, Clermont-Ferrand, France
| |
Collapse
|
18
|
Zhi X, Chen W, Xue F, Liang C, Chen BW, Zhou Y, Wen L, Hu L, Shen J, Bai X, Liang T. OSI-027 inhibits pancreatic ductal adenocarcinoma cell proliferation and enhances the therapeutic effect of gemcitabine both in vitro and in vivo. Oncotarget 2015; 6:26230-41. [PMID: 26213847 PMCID: PMC4694897 DOI: 10.18632/oncotarget.4579] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 07/10/2015] [Indexed: 02/06/2023] Open
Abstract
Despite its relative rarity, pancreatic ductal adenocarcinoma (PDAC) accounts for a large percentage of cancer deaths. In this study, we investigated the in vitro efficacy of OSI-027, a selective inhibitor of mammalian target of rapamycin complex 1 (mTORC1) and mTORC2, to treat PDAC cell lines alone, and in combination with gemcitabine (GEM). Similarly, we tested the efficacy of these two compounds in a xenograft mouse model of PDAC. OSI-027 significantly arrested cell cycle in G0/G1 phase, inhibited the proliferation of Panc-1, BxPC-3, and CFPAC-1 cells, and downregulated mTORC1, mTORC2, phospho-Akt, phospho-p70S6K, phospho-4E-BP1, cyclin D1, and cyclin-dependent kinase 4 (CDK4) in these cells. Moreover, OSI-027 also downregulated multidrug resistance (MDR)-1, which has been implicated in chemotherapy resistance in PDAC cells and enhanced apoptosis induced by GEM in the three PDAC cell lines. When combined, OSI-027 with GEM showed synergistic cytotoxic effects both in vitro and in vivo. This is the first evidence of the efficacy of OSI-027 in PDAC and may provide the groundwork for a new clinical PDAC therapy.
Collapse
MESH Headings
- Animals
- Antimetabolites, Antineoplastic/pharmacology
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Apoptosis/drug effects
- Carcinoma, Pancreatic Ductal/drug therapy
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/metabolism
- Carcinoma, Pancreatic Ductal/pathology
- Cell Cycle Checkpoints
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/pharmacology
- Dose-Response Relationship, Drug
- Drug Synergism
- Gene Expression Regulation, Neoplastic
- Humans
- Imidazoles/pharmacology
- Inhibitory Concentration 50
- Mechanistic Target of Rapamycin Complex 1
- Mechanistic Target of Rapamycin Complex 2
- Mice, Inbred BALB C
- Mice, Nude
- Multiprotein Complexes/antagonists & inhibitors
- Multiprotein Complexes/genetics
- Multiprotein Complexes/metabolism
- Pancreatic Neoplasms/drug therapy
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/pathology
- Protein Kinase Inhibitors/pharmacology
- RNA Interference
- Signal Transduction/drug effects
- TOR Serine-Threonine Kinases/antagonists & inhibitors
- TOR Serine-Threonine Kinases/genetics
- TOR Serine-Threonine Kinases/metabolism
- Time Factors
- Transfection
- Triazines/pharmacology
- Tumor Burden/drug effects
- Xenograft Model Antitumor Assays
- Gemcitabine
Collapse
Affiliation(s)
- Xiao Zhi
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Wei Chen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Fei Xue
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Chao Liang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Bryan Wei Chen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Yue Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Liang Wen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Liqiang Hu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Jian Shen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
| | - Xueli Bai
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
- Key Laboratory of Cancer Prevention and Intervention, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R.China
| | - Tingbo Liang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China
- Key Laboratory of Cancer Prevention and Intervention, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R.China
- Collaborative Innovation Center for Cancer Medicine, Zhejiang University, Hangzhou, P.R.China
| |
Collapse
|
19
|
Bothwell KD, Shaurova T, Merzianu M, Suresh A, Kuriakose MA, Johnson CS, Hershberger PA, Seshadri M. Impact of Short-term 1,25-Dihydroxyvitamin D3 on the Chemopreventive Efficacy of Erlotinib against Oral Cancer. Cancer Prev Res (Phila) 2015; 8:765-76. [PMID: 26100522 DOI: 10.1158/1940-6207.capr-14-0454] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 06/04/2015] [Indexed: 12/29/2022]
Abstract
Activation of the epidermal growth factor receptor (EGFR) pathway is an early event in head and neck carcinogenesis. As a result, targeting EGFR for chemoprevention of head and neck squamous cell carcinomas (HNSCC) has received considerable attention. In the present study, we examined the impact of 1,25(OH)2D3, the active metabolite of the nutritional supplement vitamin D on the chemopreventive efficacy of the EGFR inhibitor, erlotinib, against HNSCC. Experimental studies were conducted in patient-derived xenografts (PDX) and the 4-nitroquinoline-1-oxide (4NQO) carcinogen-induced model of HNSCC. Short-term treatment (4 weeks) of PDX-bearing mice with 1,25(OH)2D3 and erlotinib resulted in significant inhibition of tumor growth. Noninvasive MRI enabled longitudinal monitoring of disease progression in the 4NQO model with 100% of control animals showing evidence of neoplastic lesions by 24 weeks. Among the experimental groups, animals treated with the combination regimen showed the greatest reduction in tumor incidence and volume (P < 0.05). Combination treatment was well tolerated and was not associated with any significant change in body weight. Histopathologic assessment revealed a significant reduction in the degree of dysplasia with combination treatment. Immunoblot analysis of whole tongue extracts showed downregulation of phospho-EGFR and phospho-Akt with the combination regimen. These results highlight the potential of 1,25(OH)2D3 to augment the efficacy of erlotinib against HNSCC. Further optimization of schedule and sequence of this combination regimen along with investigation into the activity of less calcemic analogues or dietary vitamin D is essential to fully realize the potential of this approach.
Collapse
Affiliation(s)
| | | | | | - Amritha Suresh
- Roswell Park-Mazumdar Shaw Cancer Center Collaborative Research Program
| | - Moni A Kuriakose
- Department of Oral Medicine and Head and Neck Surgery, Roswell Park Cancer Institute, Buffalo, New York
| | | | | | - Mukund Seshadri
- Department of Pharmacology and Therapeutics. Roswell Park-Mazumdar Shaw Cancer Center Collaborative Research Program. Department of Oral Medicine and Head and Neck Surgery, Roswell Park Cancer Institute, Buffalo, New York.
| |
Collapse
|
20
|
Xu ZH, Shun WW, Hang JB, Gao BL, Hu JA. Posttranslational modifications of FOXO1 regulate epidermal growth factor receptor tyrosine kinase inhibitor resistance for non-small cell lung cancer cells. Tumour Biol 2015; 36:5485-95. [PMID: 26036758 DOI: 10.1007/s13277-015-3215-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 02/03/2015] [Indexed: 12/22/2022] Open
Abstract
Epidermal growth factor receptor tyrosine kinase inhibitors (TKIs) are effective clinical therapies for advanced non-small cell lung cancer (NSCLC) patients, while resistance to TKIs remains a serious problem in clinical practice. Recently, it has been proposed that targeting mTOR could overcome TKI resistance in NSCLC cells. Forkhead box class O1 (FOXO1) has emerged as an important rheostat that modulates the activity of Akt and mTOR signaling pathway. However, the role of FOXO1 and related regulatory mechanism in TKI resistance in NSCLC remain largely unknown. Here, we find that mTOR-AKT-FOXO1 signaling cascade is deregulated in TKI-resistant NSCLC cells and that FOXO1 was highly phosphorylated and lowly acetylated upon erlotinib treatment. Combination of mTOR or PI3K inhibitor and erlotinib overcomes TKI resistance to inhibit cell growth and induce apoptosis in TKI-resistant NSCLC cells. Furthermore, the phosphorylation and acetylation of FOXO1 are reversely modulated by mTORC2-AKT signaling pathway. FOXO1 mutation analyses reveal that FOXO1 acetylation inhibits cell proliferation and promotes NSCLC cell apoptosis, while the phosphorylation of FOXO1 plays opposite roles in NSCLC cells. Importantly, increasing FOXO1 acetylation by a HDAC inhibitor, depsipeptide, overcomes TKI resistance to effectively induce TKI-resistant NSCLC cell apoptosis. Together, FOXO1 plays dual roles in TKI resistance through posttranslational modifications in NSCLC and this study provides a possible strategy for treatment of TKI-resistant NSCLC patients.
Collapse
Affiliation(s)
- Zhi-hong Xu
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiaotong University, 197 Rui Jin Road II, Shanghai, 200025, People's Republic of China
| | | | | | | | | |
Collapse
|
21
|
Abstract
INTRODUCTION Despite improvements in treatment, survival rates of head and neck squamous cell carcinoma (HNSCC) are stagnant. The existing chemotherapeutic agents are non-selective and associated with toxicities. Combinations of the only the US FDA-approved epidermal growth factor receptor (EGFR)-targeted agent, cetuximab, with chemotherapy or radiation improves overall survival. However, the response rates to cetuximab are modest. Thus, there is an urgent need for new agents that can be safely integrated into current treatment regimens to improve outcome. AREAS COVERED Current EGFR-targeted drugs under clinical development include mAbs and tyrosine kinase inhibitors. The modest efficacy of these drugs implicates intrinsic or acquired resistance. Novel molecular agents inhibiting alternative targets to overcome anti-EGFR resistance in HNSCC are under investigation. Gene therapy and immunotherapy are also promising strategies to improve efficacy and reduce toxicity. EXPERT OPINION To date, only six drugs have been FDA-approved for the treatment of head and neck cancer. Cetuximab is the only approved molecular targeting agent for HNSCC and despite ubiquitous expression of EGFR in HNSCC tumors, clinical responses are limited. Genetic and epigenetic characterization of HNSCC tumors, coupled with improved preclinical models, should facilitate the development of more effective drugs.
Collapse
Affiliation(s)
- Yihui Wen
- Sun Yat-Sen University and The First Affiliated Hospital of Sun Yat-Sen University, Department of Otolaryngology, Guangzhou, Guangzhou, PR China
- Sun Yat-Sen University and Otolaryngology Institute of Sun Yat-Sen University, Guangzhou, Guangzhou, PR China
- University of Pittsburgh and University of Pittsburgh School of Medicine, Department of Otolaryngology, Pittsburgh, PA, USA
| | - Jennifer R Grandis
- University of Pittsburgh and University of Pittsburgh School of Medicine, Department of Otolaryngology, Pittsburgh, PA, USA
- University of Pittsburgh and University of Pittsburgh School of Medicine, Department of Pharmacology, Pittsburgh, PA, USA
- Eye and Ear Institute, 200 Lothrop St., Suite 500, Pittsburgh, PA, USA
- University of California, Clinical and Translational Science Institute, Department of Otolaryngology-Head and Neck Surgery, San Francisco, CA, USA
| |
Collapse
|
22
|
Chen BW, Chen W, Liang H, Liu H, Liang C, Zhi X, Hu LQ, Yu XZ, Wei T, Ma T, Xue F, Zheng L, Zhao B, Feng XH, Bai XL, Liang TB. Inhibition of mTORC2 Induces Cell-Cycle Arrest and Enhances the Cytotoxicity of Doxorubicin by Suppressing MDR1 Expression in HCC Cells. Mol Cancer Ther 2015; 14:1805-15. [PMID: 26026051 DOI: 10.1158/1535-7163.mct-15-0029] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/17/2015] [Indexed: 12/21/2022]
Abstract
mTOR is aberrantly activated in hepatocellular carcinoma (HCC) and plays pivotal roles in tumorigenesis and chemoresistance. Rapamycin has been reported to exert antitumor activity in HCC and sensitizes HCC cells to cytotoxic agents. However, due to feedback activation of AKT after mTOR complex 1 (mTORC1) inhibition, simultaneous targeting of mTORC1/2 may be more effective. In this study, we examined the interaction between the dual mTORC1/2 inhibitor OSI-027 and doxorubicin in vitro and in vivo. OSI-027 was found to reduce phosphorylation of both mTORC1 and mTORC2 substrates, including 4E-BP1, p70S6K, and AKT (Ser473), and inhibit HCC cell proliferation. Similar to OSI-027 treatment, knockdown of mTORC2 induced G0-G1 phase cell-cycle arrest. In contrast, rapamycin or knockdown of mTORC1 increased phosphorylation of AKT (Ser473), yet had little antiproliferative effect. Notably, OSI-027 synergized with doxorubicin for the antiproliferative efficacy in a manner dependent of MDR1 expression in HCC cells. The synergistic antitumor effect of OSI-027 and doxorubicin was also observed in a HCC xenograft mouse model. Moreover, AKT was required for OSI-027-induced cell-cycle arrest and downregulation of MDR1. Our findings provide a rationale for dual mTORC1/mTORC2 inhibitors, such as OSI-027, as monotherapy or in combination with cytotoxic agents to treat HCC. Mol Cancer Ther; 14(8); 1805-15. ©2015 AACR.
Collapse
Affiliation(s)
- Bryan Wei Chen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Wei Chen
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hui Liang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hao Liu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chao Liang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiao Zhi
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Li-Qiang Hu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xia-Zhen Yu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Tao Wei
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Tao Ma
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Fei Xue
- Department of Hepatobiliary and Pancreatic Surgery, People's Hospital of Zhengzhou University/Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Lei Zheng
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland. Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Bin Zhao
- Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xin-Hua Feng
- Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xue-Li Bai
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ting-Bo Liang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China. Collaborative Innovation Center for Cancer Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
| |
Collapse
|
23
|
Massarelli E, Lin H, Ginsberg LE, Tran HT, Lee JJ, Canales JR, Williams MD, Blumenschein GR, Lu C, Heymach JV, Kies MS, Papadimitrakopoulou V. Phase II trial of everolimus and erlotinib in patients with platinum-resistant recurrent and/or metastatic head and neck squamous cell carcinoma. Ann Oncol 2015; 26:1476-80. [PMID: 26025965 DOI: 10.1093/annonc/mdv194] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 04/14/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Enhanced phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway is one of the key adaptive changes accounting for epidermal growth factor receptor (EGFR) inhibitor-resistant growth in head and neck squamous cell carcinoma (HNSCC). We designed a phase II clinical trial of EGFR tyrosine kinase inhibitor (TKI), erlotinib, in association with the mTOR inhibitor, everolimus, based on the hypothesis that the downstream effects of Akt through inhibition of mTOR may enhance the effectiveness of the EGFR-TKI in patients with recurrent/metastatic HNSCC. PATIENTS AND METHODS Patients with histologically or cytologically confirmed platinum-resistant HNSCC received everolimus 5 mg and erlotinib 150 mg daily orally until disease progression, intolerable toxicity, investigator or patient decision. Cytokines and angiogenic factors profile, limited mutation analysis and p16 immunohistochemistry status were included in the biomarker analysis. RESULTS Of the 35 assessable patients, 3 (8%) achieved partial response at 4 weeks, 1 confirmed at 12 weeks; overall response rate at 12 weeks was 2.8%. Twenty-seven (77%) patients achieved disease stabilization at 4 weeks, 11 (31%) confirmed at 12 weeks. Twelve-week progression-free survival (PFS) was 49%, median PFS 11.9 weeks and median overall survival (OS) 10.25 months. High neutrophil gelatinase lipocalin (P = 0.01) and vascular endothelial growth factor (VEGF) (P = 0.04) plasma levels were significantly associated with worse OS. CONCLUSIONS The combination of erlotinib and everolimus did not show significant benefit in unselected patients with platinum-resistant metastatic HNSCC despite a manageable toxicity profile. Markers of tumor invasion and hypoxia identify a group of patients with particularly poor prognosis. CLINICAL TRIAL NUMBER NCT00942734.
Collapse
Affiliation(s)
- E Massarelli
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - H Lin
- Biostatistics, Diagnostic Radiology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - L E Ginsberg
- Translational Molecular Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - H T Tran
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - J J Lee
- Biostatistics, Diagnostic Radiology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - J R Canales
- Translational Molecular Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - M D Williams
- Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - G R Blumenschein
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - C Lu
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - J V Heymach
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - M S Kies
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| | - V Papadimitrakopoulou
- Departments of Thoracic Head and Neck Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, USA
| |
Collapse
|
24
|
Niehr F, Weichert W, Stenzinger A, Budach V, Tinhofer I. CCI-779 (Temsirolimus) exhibits increased anti-tumor activity in low EGFR expressing HNSCC cell lines and is effective in cells with acquired resistance to cisplatin or cetuximab. J Transl Med 2015; 13:106. [PMID: 25890004 PMCID: PMC4389307 DOI: 10.1186/s12967-015-0456-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 03/10/2015] [Indexed: 11/24/2022] Open
Abstract
Background The mammalian target of rapamycin (mTOR) signaling pathway plays a pivotal role in numerous cellular processes involving growth, proliferation and survival. The purpose of this study was to investigate the anti-tumoral effect of the mTOR inhibitor (mTORi) CCI-779 in HNSCC cell lines and its potency in cisplatin- and cetuximab-resistant cells. Methods A panel of 10 HNSCC cell lines with differences in TP53 mutational status and basal cisplatin sensitivity and two isogenic models of acquired resistance to cisplatin and cetuximab, respectively were studied. Cell survival after treatment with CCI-779, cisplatin and cetuximab alone or in combination was determined by MTT assays. Potential predictive biomarkers for tumor cell sensitivity to CCI-779 were evaluated. Results We observed considerable heterogeneity in sensitivity of HNSCC cell lines to CCI-779 monotherapy. Sensitivity was observed in TP53 mutated as well as wild-type cell lines. Total and p-EGFR expression levels but not the basal activity of the mTOR and MAPK signaling pathways were correlated with sensitivity to CCI-779. Resistant cells with increased EGFR activation could be sensitized by the combination of CCI-779 with cetuximab. Interestingly, cell lines with acquired resistance to cisplatin displayed a higher sensitivity to CCI-779 whereas cetuximab-resistant cells were less sensitive to the drug, but could be sensitized to CCI-779 by EGFR blockade. Conclusions Activity of CCI-779 in HNSCC cells harboring TP53 mutations and displaying a phenotype of cisplatin resistance suggests its clinical potential even in patients with dismal outcome after current standard treatment. Cetuximab/mTORi combinations might be useful for treatment of tumors with high expression of EGFR/p-EGFR and/or acquired cetuximab resistance. This combinatorial treatment modality needs further evaluation in future translational and clinical studies. Electronic supplementary material The online version of this article (doi:10.1186/s12967-015-0456-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Franziska Niehr
- Translational Radiooncology Laboratory, Department of Radiooncology and Radiotherapy, Charité University Hospital, Berlin, Germany. .,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ) Heidelberg, Partner Site Berlin, Berlin, Germany.
| | - Wilko Weichert
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany. .,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ) Heidelberg, Partner Site Heidelberg, Heidelberg, Germany.
| | - Albrecht Stenzinger
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
| | - Volker Budach
- Translational Radiooncology Laboratory, Department of Radiooncology and Radiotherapy, Charité University Hospital, Berlin, Germany. .,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ) Heidelberg, Partner Site Berlin, Berlin, Germany.
| | - Ingeborg Tinhofer
- Translational Radiooncology Laboratory, Department of Radiooncology and Radiotherapy, Charité University Hospital, Berlin, Germany. .,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ) Heidelberg, Partner Site Berlin, Berlin, Germany. .,Department of Radiooncology and Radiotherapy, Translational Radiooncology Laboratory, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.
| |
Collapse
|
25
|
Zheng Y, Jiang Y. mTOR Inhibitors at a Glance. MOLECULAR AND CELLULAR PHARMACOLOGY 2015; 7:15-20. [PMID: 27134695 PMCID: PMC4849280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Mechanistic target of rapamycin (mTOR) is a conserved threonine and serine protein kinase that was identified more than two decades ago as the target of immunosuppressive drug rapamycin. Since then considerable amount of information has been learned about the function of this kinase. It is now well-established that mTOR plays a pivotal role in governing cell growth and proliferation, hence making mTOR a therapeutic target for disease conditions caused by deregulated cell proliferation, such as cancer. In the past decade, numerous mTOR inhibitors have been developed and many are currently in clinical trials for cancer treatment. This commentary is to provide a brief summary of these mTOR inhibitors.
Collapse
Affiliation(s)
- Yin Zheng
- Medical Health Care Center, Hainan Provincial People’s Hospital, Haikou, China
| | - Yu Jiang
- Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| |
Collapse
|
26
|
Abstract
The mammalian target of rapamycin (mTOR) has emerged as a potential target for drug development, particularly due to the fact that it plays such a crucial role in cancer biology. In addition, next-generation mTOR inhibitors have become available, marking an exciting new phase in mTOR-based therapy. However, the verdict on their therapeutic efectiveness remains unclear. Here we review phosphatidylinositol-3-kinase (PI3K)/Akt/mTOR signaling as one of the primary mechanisms for sustaining tumor outgrowth and metastasis, recent advances in the development of mTOR inhibitors, and current studies addressing mTOR activation/inhibition in colorectal cancer (CRC). We will also discuss our recent comparative study of diferent mTOR inhibitors in a population of colon cancer stem cells (CSCs), and current major challenges for achieving individualized drug therapy using kinase inhibitors.
Collapse
|
27
|
Cancer subclonal genetic architecture as a key to personalized medicine. Neoplasia 2014; 15:1410-20. [PMID: 24403863 DOI: 10.1593/neo.131972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 02/08/2023] Open
Abstract
The future of personalized oncological therapy will likely rely on evidence-based medicine to integrate all of the available evidence to delineate the most efficacious treatment option for the patient. To undertake evidence-based medicine through use of targeted therapy regimens, identification of the specific underlying causative mutation(s) driving growth and progression of a patient's tumor is imperative. Although molecular subtyping is important for planning and treatment, intraclonal genetic diversity has been recently highlighted as having significant implications for biopsy-based prognosis. Overall, delineation of the clonal architecture of a patient's cancer and how this will impact on the selection of the most efficacious therapy remain a topic of intense interest.
Collapse
|
28
|
Safdari Y, Khalili M, Farajnia S, Asgharzadeh M, Yazdani Y, Sadeghi M. Recent advances in head and neck squamous cell carcinoma--a review. Clin Biochem 2014; 47:1195-202. [PMID: 24912050 DOI: 10.1016/j.clinbiochem.2014.05.066] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/10/2014] [Accepted: 05/27/2014] [Indexed: 12/27/2022]
Abstract
The current review presents the results of the most recent studies performed on different aspects of human head and neck squamous cell carcinoma, including radiosensitivity induction, efficiency improvement of monoclonal antibodies using low-intensity ultrasound, chemical compounds such as toll-like receptor (TLC) agonists, dasatinib, resveratrol and niclosamide, nuclear inhibition of cancer using STAT3 decoy oligonucleotide, efficiency of anti-EGFR monoclonal antibodies in detection of head and neck cancers and other related issues.
Collapse
Affiliation(s)
- Yaghoub Safdari
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Faculty of Advanced Medical Science Technologies, Golestan University of Medical Sciences, Gorgan, Iran.
| | - Masoumeh Khalili
- Pharmaceutical Science Research Center, School of Pharmacy, Mazandaran University of Medical Science, Sari, Iran
| | - Safar Farajnia
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Yaghoub Yazdani
- Faculty of Advanced Medical Science Technologies, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mahnaz Sadeghi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
29
|
Chen W, Hu QD, Xia XF, Liang C, Liu H, Zhang Q, Ma T, Liang F, Liang TB. Rapamycin enhances cetuximab cytotoxicity by inhibiting mTOR-mediated drug resistance in mesenchymal hepatoma cells. Cancer Biol Ther 2014; 15:992-9. [PMID: 24800850 DOI: 10.4161/cbt.29113] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The synergistic effect of combined drug therapy provides an enhanced treatment for advanced liver cancer. We aimed to investigate the underlying mechanism of cetuximab sensitization by rapamycin in hepatoma cells. Four hepatoma cell lines, HepG2, HuH7, SNU-387, and SNU-449, were treated with cetuximab or cetuximab plus rapamycin and growth inhibition was evaluated by measuring relative cell viability and cell proliferation. The cell phenotype was determined for each hepatoma cell line by western blot analysis of E-cadherin and vimentin expression and mTOR activation status. To identify the role of mTOR signaling in cetuximab sensitization, we used deferoxamine-mediated hypoxia to induce epithelial-mesenchymal transition (EMT) in HuH7 and HepG2 cells and measured mTOR activity after rapamycin treatment. Rapamycin significantly increased cetuximab cytotoxicity in hepatoma cell lines with differential sensitivities. Phenotypic differences among hepatoma cell lines, specifically epithelial (HuH7 and HepG2) and mesenchymal (SNU-387 and SNU-449), correlated with the efficacy of rapamycin cotreatment, although rapamycin treatment did not affect cell phenotype. We further showed that rapamycin inhibits mTOR in mesenchymal SNU-387 and SNU-449 cells. In addition, the induction of EMT in HuH7 and HepG2 cells significantly decreased cetuximab cytotoxicity; however, rapamycin treatment significantly restored cetuximab sensitivity and decreased mTOR signaling in these cells. In conclusion, we identified significant differences in rapamycin-induced cetuximab sensitization between epithelial and mesenchymal hepatoma cells. We therefore report that rapamycin cotreatment enhances cetuximab cytotoxicity by inhibiting mTOR signaling in mesenchymal cells.
Collapse
Affiliation(s)
- Wei Chen
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Qi-Da Hu
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Xue-Feng Xia
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Chao Liang
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Hao Liu
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Qi Zhang
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | - Tao Ma
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| | | | - Ting-Bo Liang
- Department of Hepatobiliary and Pancreatic Surgery; The Second Affiliated Hospital; Zhejiang University School of Medicine; Hangzhou, PR China
| |
Collapse
|
30
|
Havel JJ, Li Z, Cheng D, Peng J, Fu H. Nuclear PRAS40 couples the Akt/mTORC1 signaling axis to the RPL11-HDM2-p53 nucleolar stress response pathway. Oncogene 2014; 34:1487-98. [PMID: 24704832 PMCID: PMC4216640 DOI: 10.1038/onc.2014.91] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 02/26/2014] [Accepted: 03/01/2014] [Indexed: 12/27/2022]
Abstract
The Ribosomal Protein (RP)-HDM2-p53 pathway has been shown to play key roles in oncogene-induced apoptosis and senescence, but the mechanism regulating this pathway remains elusive. The Proline-Rich Akt Substrate of 40 kDA (PRAS40) has recently been identified as a binding partner and inhibitor of the mechanistic Target of Rapamycin Complex 1 (mTORC1). Although other inhibitors of mTORC1 are known tumor suppressors, PRAS40 promotes cell survival and tumorigenesis. Here we demonstrate that Akt- and mTORC1-mediated phosphorylation of PRAS40 at T246 and S221, respectively, promotes nuclear-specific association of PRAS40 with Ribosomal Protein L11 (RPL11). Importantly, silencing of PRAS40 induces upregulation of p53 in a manner dependent upon RPL11. This effect is rescued by wild type PRAS40, but not by the RPL11 binding-null PRAS40 T246A mutant. We find that PRAS40 negatively regulates the RPL11-HDM2-p53 nucleolar stress response pathway and suppresses induction of p53-mediated cellular senescence. This work identifies nuclear PRAS40 as a dual-input signaling checkpoint that links cell growth and proliferation to inhibition of cellular senescence. These findings may help to explain the pro-tumorigenic effect of PRAS40 and identify the PRAS40-RPL11 complex as a promising target for p53-restorative anti-cancer drug discovery.
Collapse
Affiliation(s)
- J J Havel
- 1] Department of Pharmacology, Emory University School of Medicine, Atlanta, GA, USA [2] Graduate Program in Molecular and Systems Pharmacology, Emory University, Atlanta, GA, USA
| | - Z Li
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA, USA
| | - D Cheng
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - J Peng
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - H Fu
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA, USA
| |
Collapse
|
31
|
Becker MN, Wu KJ, Marlow LA, Kreinest PA, Vonroemeling CA, Copland JA, Williams CR. The combination of an mTORc1/TORc2 inhibitor with lapatinib is synergistic in bladder cancer in vitro. Urol Oncol 2014; 32:317-26. [PMID: 24054871 PMCID: PMC4559860 DOI: 10.1016/j.urolonc.2013.06.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 06/05/2013] [Accepted: 06/11/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To examine the ability of dual mTORc1/c2 inhibitors in conjunction with lapatinib to function in a synergistic manner to inhibit cell proliferation and anchorage-independent growth in bladder cancer cell lines. MATERIALS AND METHODS We examined patient tumor samples for overexpression of pS6, p4EBP1, pAkt, and phosphorylated epidermal growth factor receptor (pEGFR) using a tissue microarray containing 84 cases. Three bladder cancer cell lines, T24, HT1376, and UM-UC-3, were analyzed for cell proliferation after treatment with mTORc1/c2 inhibitors OSI-027 or PP242. Western blots were used to verify that the drugs were inhibiting phosphorylation of target proteins within the mTOR pathway, and they were compared with rapamycin inhibition. We also analyzed cell proliferation and anchorage-independent growth after treatment with OSI-027 and lapatinib in combination. PARP cleavage and autophagic flux were measured by examining levels of LC3B and p62 by western blotting. RESULTS Tumor samples show increased expression of pEGFR (38% vs. 8%) and HER2 (38% vs. 4%) and decreased expression of pAkt S473 (7.5% vs. 29%) and pAkt T308 (50% vs. 84%) relative to normal tissue. Significant differences between normal and tumor samples for staining with pEGFR (P = 0.0188), HER 2 (P = 0.0017), pATK S473 (P = 0.0128), and pAkt T308 (P = 0.0015) is observed. Expression of proteins within the EGFR/HER2 pathway or within the mTOR pathway is correlated. No correlation was found between staining and tumor stage. OSI-027 and PP242 diminish cell proliferation in all 3 cell lines with IC50 values ranging from 0.63 to 17.95µM. Both drugs inhibit phosphorylation of both mTORc1 and mTORc2 pathway components. OSI-027 and lapatinib inhibit cell proliferation and anchorage-independent growth in a synergistic manner. One cell line exhibited apoptosis in response to combination drug treatment, whereas the other 2 cell lines have increased levels of autophagy indicative of resistance to apoptosis. CONCLUSIONS The combination of OSI-027 and lapatinib results in antitumor synergy and further exploration of this combination should be undertaken.
Collapse
Affiliation(s)
- Marie N Becker
- Division of Urology, Department of Surgery, College of Medicine-Jacksonville, University of Florida, Jacksonville, FL.
| | - Kevin J Wu
- Department of Laboratory Medicine and Pathology, Mayo Clinic Comprehensive Cancer Center, Mayo Clinic, Jacksonville, FL
| | - Laura A Marlow
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Mayo Clinic, Jacksonville, FL
| | - Pamela A Kreinest
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Mayo Clinic, Jacksonville, FL
| | - Christina A Vonroemeling
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Mayo Clinic, Jacksonville, FL
| | - John A Copland
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Mayo Clinic, Jacksonville, FL
| | - Christopher R Williams
- Division of Urology, Department of Surgery, College of Medicine-Jacksonville, University of Florida, Jacksonville, FL
| |
Collapse
|
32
|
|
33
|
Schmitz S, Ang KK, Vermorken J, Haddad R, Suarez C, Wolf GT, Hamoir M, Machiels JP. Targeted therapies for squamous cell carcinoma of the head and neck: current knowledge and future directions. Cancer Treat Rev 2013; 40:390-404. [PMID: 24176789 DOI: 10.1016/j.ctrv.2013.09.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Revised: 08/26/2013] [Accepted: 09/04/2013] [Indexed: 12/19/2022]
Abstract
Despite progress in the therapeutic management of patients with squamous cell carcinoma of the head and neck (SCCHN), the mortality rate of patients presenting with advanced disease remains high. One approach to improve treatment efficacy is to add novel molecular targeted agents to the classical treatment regimens. Monoclonal antibodies targeting the epidermal growth factor receptor (EGFR) have shown clinical benefits in palliative and curative settings. However, only a minority of patients presenting with recurrent or metastatic (R/M) SCCHN have meaningful tumor regression with these agents and virtually all who do develop acquired tumor resistance after a few months of treatment. For these reasons, other inhibitors of EGFR or molecules that interfere with known molecular pathways activated in SCCHN are of considerable interest, either as single agents or in combination with other treatment modalities. In this review, we discuss the different molecular therapeutic approaches explored in SCCHN. We also briefly outline new trial designs that could be used to accelerate the investigation of emerging therapeutic agents in this disease.
Collapse
Affiliation(s)
- Sandra Schmitz
- Cancer Center, Department of Medical Oncology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc and Institut de Recherche Clinique et Expérimentale (Pole MIRO), Université Catholique de Louvain, Avenue Hippocrate 10, 1200 Brussels, Belgium.
| | - Kie Kian Ang
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
| | - Jan Vermorken
- Antwerp University Hospital, Department of Medical Oncology, Wilrijkstraat 10, 2650 Edegem, Belgium.
| | - Robert Haddad
- Department of Medical Oncology, Head and Neck Oncology Program, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Avenue, Boston, MA 02215, USA.
| | - Carlos Suarez
- Department of Otolaryngology, Hospital Universitario Central de Asturias Oviedo, Celestino Villamil SN, 33006 Oviedo, Asturias, Spain.
| | - Gregory T Wolf
- Department of Otolaryngology-Head and Neck Surgery, University of Michigan Health System, Ann Arbor, MI 48109, USA.
| | - Marc Hamoir
- Cancer Center, Department of Medical Oncology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc and Institut de Recherche Clinique et Expérimentale (Pole MIRO), Université Catholique de Louvain, Avenue Hippocrate 10, 1200 Brussels, Belgium.
| | - Jean-Pascal Machiels
- Cancer Center, Department of Medical Oncology and Head and Neck Surgery, Cliniques Universitaires Saint-Luc and Institut de Recherche Clinique et Expérimentale (Pole MIRO), Université Catholique de Louvain, Avenue Hippocrate 10, 1200 Brussels, Belgium.
| |
Collapse
|
34
|
Burtness B, Bauman JE, Galloway T. Novel targets in HPV-negative head and neck cancer: overcoming resistance to EGFR inhibition. Lancet Oncol 2013; 14:e302-9. [PMID: 23816296 DOI: 10.1016/s1470-2045(13)70085-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cancers of the head and neck that arise from habitual exposure to carcinogens have lower cure rates than those that arise from infection with human papillomavirus (HPV), and intensification of cytotoxic chemotherapy and radiation has not improved outcomes. HPV-negative head and neck cancers abundantly express EGFR, and the monoclonal antibody cetuximab, directed against EGFR, is the only targeted therapy that has improved disease survival so far. However, response rates to single-agent cetuximab are lower than 15%, and cetuximab given with chemotherapy or radiation leads to only a modest effect on survival. Thus, investigating the mechanisms of resistance to EGFR inhibition in HPV-negative head and neck cancer might help identify novel and active therapies. In this Review, we focus on therapies in development that target redundant receptor tyrosine kinases (eg, HER2 and MET), reduce or abrogate nuclear functions of EGFR, affect cellular trafficking by inhibition of histone deacetylase, or treatments that might address resistance that arises in the EGFR signalling stream (eg, aurora-kinase inhibitors and STAT decoys).
Collapse
Affiliation(s)
- Barbara Burtness
- Department of Medical Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.
| | | | | |
Collapse
|
35
|
Sun SY. mTOR kinase inhibitors as potential cancer therapeutic drugs. Cancer Lett 2013; 340:1-8. [PMID: 23792225 DOI: 10.1016/j.canlet.2013.06.017] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/12/2013] [Accepted: 06/13/2013] [Indexed: 01/09/2023]
Abstract
The mammalian target of rapamycin (mTOR) plays a critical role in the positive regulation of cell growth and survival primarily through direct interaction with raptor (forming mTORC complex 1; mTORC1) or rictor (forming mTOR complex 2; mTORC2). The mTOR axis is often activated in many types of cancer and thus has become an attractive cancer therapeutic target. The modest clinical anticancer activity of conventional mTOR allosteric inhibitors, rapamycin and its analogs (rapalogs), which preferentially inhibit mTORC1, in most types of cancer, has encouraged great efforts to develop mTOR kinase inhibitors (TORKinibs) that inhibit both mTORC1 and mTORC2, in the hope of developing a novel generation of mTOR inhibitors with better therapeutic efficacy than rapalogs. Several TORKinibs have been developed and actively studied pre-clinically and clinically. This review will highlight recent advances in the development and research of TORKinibs and discuss some potential issues or challenges in this area.
Collapse
Affiliation(s)
- Shi-Yong Sun
- Department of Hematology and Medical Oncology, Emory University School of Medicine and Winship Cancer Institute, Atlanta, GA, USA.
| |
Collapse
|