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Xiao L, Fang Z, Tang Y, Sun Y, Zhu Z, Li J, Zhou M, Yang N, Zheng K, Hu S. Evaluation of gastrin-releasing peptide receptor, prostate-specific membrane antigen, and neurotensin receptor 1 as potential biomarkers for accurate prostate cancer stratified diagnosis. EJNMMI Res 2024; 14:55. [PMID: 38880858 PMCID: PMC11180645 DOI: 10.1186/s13550-024-01116-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 06/02/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND Studies on single-target PET imaging of gastrin-releasing peptide receptor (GRPR), prostate-specific membrane antigen (PSMA), or neurotensin receptor 1(NTR1) have been reported. However, the performance of these three targets in the progression of PCa remains unclear. Our study aims to compare the expression of GRPR, PSMA, and NTR1 in patients with prostatic intraepithelial neoplasia (PIN), prostate cancer (PCa), and lymph node metastasis. We synthesized molecular probes targeting the markers to achieve a non-invasive precise detection of PCa patients with PET/CT imaging. METHODS In this study, the expression of GRPR, PSMA, and NTR1 was evaluated by immunohistochemistry in 34 PIN, 171 PCa, and 22 lymph node metastasis tissues of patients. The correlation between their expression and the clinicopathological parameters of PCa patients was assessed. Sixteen PCa patients with different Gleason scores (GS) underwent dual-tracer (68Ga-NOTA-RM26 and 68Ga-NOTA-PSMA617) PET/CT. RESULTS In the PIN stage, the expression of GRPR was significantly higher than that of PSMA and NTR1 (P < 0.001), while NTR1 expression was significantly higher than PSMA and GRPR expression in primary PCa (P = 0.001). High PSMA expression in PCa patients was associated with shorter progression-free survival (P = 0.037) and overall survival (P = 0.035). PCa patients with high GS had higher tumor uptake of 68Ga-NOTA-PSMA617 than those with low GS (P = 0.001), while PCa patients with low GS had higher tumor uptake of 68Ga-NOTA-RM26 than those with high GS (P = 0.001). CONCLUSIONS This study presents three novel biomarkers (PSMA, GRPR, and NTR1) as imaging agents for PET/CT, and may offer a promising approach for non-invasive precise detection and Gleason grade prediction of PCa patients.
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Affiliation(s)
- Ling Xiao
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Zhihui Fang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
- Department of Nuclear Medicine, The Second Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yongxiang Tang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Yanyan Sun
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, 450000, China
| | - Zehua Zhu
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Jian Li
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Ming Zhou
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Nengan Yang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Kai Zheng
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China
| | - Shuo Hu
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha City, 410008, Hunan Province, P.R. China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China.
- Key Laboratory of Biological Nanotechnology of National Health Commission, Xiangya Hospital, Central South University, Changsha, 410008, China.
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2
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Sánchez ML, Coveñas R. The Neurotensinergic System: A Target for Cancer Treatment. Curr Med Chem 2021; 29:3231-3260. [PMID: 34711154 DOI: 10.2174/0929867328666211027124328] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/19/2021] [Accepted: 08/26/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND The scientific interest regarding the involvement of peptides in cancer has increased in the last years. In tumor cells the overexpression of peptides and their receptors is known and new therapeutic targets for the treatment of cancer have been suggested. The overexpression of the neurotensinergic system has been associated with poor prognosis, tumor size, higher tumor aggressiveness, increased relapse risk and worse sensitivity to chemotherapy agents. OBJECTIVE The aim of this review is to update the findings regarding the involvement of the neurotensinergic system in cancer to suggest anticancer therapeutic strategies targeting this system. The neurotensin (NT) precursor, NT and its receptors (NTR) and the involvement of the neurotensinergic system in lung, breast, prostate, gastric, colon, liver and pancreatic cancers, glioblastoma, neuroendocrine tumors and B-cell leukemia will be mentioned and discussed as well as the signaling pathways mediated by NT. Some research lines to be developed in the future will be suggested such as: molecules regulating the expression of the NT precursor, influence of the diet in the development of tumors, molecules and signaling pathways activated by NT and antitumor therapeutic strategies targeting the neurotensinergic system. CONCLUSION NT, via the NTR, exerts oncogenic (tumor cell proliferation, invasion, migration, angiogenesis) and antiapoptotic effects, whereas NTR antagonists inhibit these effects. NTR expression can be used as a diagnostic tool/therapeutic target and the administration of NTR antagonists as antitumor drugs could be a therapeutic strategy to treat tumors overexpressing NTR.
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Affiliation(s)
- Manuel Lisardo Sánchez
- University of Salamanca, Laboratory of Neuroanatomy of the Peptidergic Systems (Lab. 14), Institute of Neurosciences of Castilla y León (INCYL), Salamanca. Spain
| | - Rafael Coveñas
- University of Salamanca, Laboratory of Neuroanatomy of the Peptidergic Systems (Lab. 14), Institute of Neurosciences of Castilla y León (INCYL), Salamanca. Spain
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3
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Nikolaou S, Qiu S, Fiorentino F, Simillis C, Rasheed S, Tekkis P, Kontovounisios C. The role of Neurotensin and its receptors in non-gastrointestinal cancers: a review. Cell Commun Signal 2020; 18:68. [PMID: 32336282 PMCID: PMC7183616 DOI: 10.1186/s12964-020-00569-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/27/2020] [Indexed: 12/11/2022] Open
Abstract
Background Neurotensin, originally isolated in 1973 has both endocrine and neuromodulator activity and acts through its three main receptors. Their role in promoting tumour cell proliferation, migration, DNA synthesis has been studied in a wide range of cancers. Expression of Neurotensin and its receptors has also been correlated to prognosis and prediction to treatment. Main body The effects of NT are mediated through mitogen-activated protein kinases, epidermal growth factor receptors and phosphatidylinositol-3 kinases amongst others. This review is a comprehensive summary of the molecular pathways by which Neurotensin and its receptors act in cancer cells. Conclusion Identifying the role of Neurotensin in the underlying molecular mechanisms in various cancers can give way to developing new agnostic drugs and personalizing treatment according to the genomic structure of various cancers. Video abstract
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Affiliation(s)
- Stella Nikolaou
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK.,Department of Colorectal Surgery, Royal Marsden Hospital, London, UK.,Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK
| | - Shengyang Qiu
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK.,Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK
| | - Francesca Fiorentino
- Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK
| | - Constantinos Simillis
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK
| | - Shahnawaz Rasheed
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK.,Department of Colorectal Surgery, Royal Marsden Hospital, London, UK.,Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK
| | - Paris Tekkis
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK.,Department of Colorectal Surgery, Royal Marsden Hospital, London, UK.,Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK
| | - Christos Kontovounisios
- Department of Colorectal Surgery, Chelsea and Westminster Hospital, NHS Foundation Trust, London, UK. .,Department of Colorectal Surgery, Royal Marsden Hospital, London, UK. .,Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Campus, 369 Fulham Road, London, SW10 9NH, UK.
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4
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A comparative study of peptide-based imaging agents [ 68Ga]Ga-PSMA-11, [ 68Ga]Ga-AMBA, [ 68Ga]Ga-NODAGA-RGD and [ 68Ga]Ga-DOTA-NT-20.3 in preclinical prostate tumour models. Nucl Med Biol 2020; 84-85:88-95. [PMID: 32251995 DOI: 10.1016/j.nucmedbio.2020.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Peptide-based imaging agents targeting prostate-specific membrane antigen (PSMA) have revolutionized the evaluation of biochemical recurrence of prostate cancer (PCa) but lacks sensitivity at very low serum prostate specific antigen (PSA) levels. Once recurrence is suspected, other positron emission tomography (PET) radiotracers could be of interest to discriminate between local and distant relapse. We studied [18F]fluorodeoxyglucose ([18F]FDG) targeting glucose metabolism, [18F]fluorocholine ([18F]FCH) targeting membrane metabolism and peptide-based imaging agents [68Ga]Ga-PSMA-11, [68Ga]Ga-AMBA, [68Ga]Ga-NODAGA-RGD and [68Ga]Ga-DOTA-NT-20.3 targeting PSMA, gastrin releasing peptide receptor (GRPr), αvβ3 integrin and neurotensin type 1 receptor (NTSR1) respectively, in different PCa tumour models. METHODS Mice were xenografted with 22Rv1, an androgen-receptor (AR)-positive, PCa cell line that expresses PSMA and PC3, an AR-negative one that does not express PSMA. PET imaging using the different radiotracers was performed sequentially and the uptake characteristics compared to one other. NTSR1 and PSMA expression levels were analysed in tumours by immunohistochemistry. RESULTS [18F]FDG displayed low but sufficient uptake to visualize PC3 and 22Rv1 derived tumours. We also observed a low efficacy of [18F]FCH PET imaging and a low [68Ga]Ga-NODAGA-RGD tumour uptake in those tumours. As expected, an elevated tumour uptake was obtained for [68Ga]Ga-PSMA-11 in 22Rv1 derived tumour although no uptake was measured in the androgen independent cell line PC3, derived from a bone metastasis of a high-grade PCa. Moreover, in PC3 cell line, we obtained good tumour uptake, high tumour-to-background contrast using [68Ga]Ga-AMBA and [68Ga]Ga-DOTA-NT-20.3. Immunohistochemistry analysis confirmed high NTSR1 expression in PC3 derived tumours and conversely high PSMA expression in 22Rv1 derived tumours. CONCLUSION PET imaging using [68Ga]Ga-AMBA and [68Ga]Ga-DOTA-NT-20.3 demonstrates that GRPr and NTSR1 could represent viable alternative targets for diagnostic or therapeutic applications in PCa with limited PSMA expression levels. More preclinical and clinical studies will follow to explore this potential. ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT Peptide-based imaging agents targeting PSMA represent a major progress in the evaluation of biochemical recurrence of PCa but sometimes yield false negative results in some lesions. Continuing efforts have thus been made to evaluate other radiotracers. Our preclinical results suggest that [68Ga]labelled bombesin and neurotensin analogues could serve as alternative PET radiopharmaceuticals for diagnostic or therapy in cases of PSMA-negative PCa.
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Dziegielewski J, Bońkowska MA, Poniecka EA, Heo J, Du K, Crittenden RB, Bender TP, Brautigan DL, Larner JM. Deletion of the SAPS1 subunit of protein phosphatase 6 in mice increases radiosensitivity and impairs the cellular DNA damage response. DNA Repair (Amst) 2019; 85:102737. [PMID: 31751917 DOI: 10.1016/j.dnarep.2019.102737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/17/2019] [Accepted: 10/15/2019] [Indexed: 12/24/2022]
Abstract
Cellular responses to DNA damage include activation of DNA-dependent protein kinase (DNA-PK) through, among others, the serine/threonine protein phosphatase 6 (PP6). We previously showed that recognition of DNA-PKcs is mediated by the SAPS1 PP6 regulatory subunit. Here, we report and characterize a SAPS1 null mouse and investigate the effects of deletion on DNA damage signaling and repair. Strikingly, neither SAPS1-null animals nor cells derived from them show gross defects, unless subjected to DNA damage by radiation or chemical agents. The overall survival of SAPS1-null animals following whole body irradiation is significantly shortened as compared to wild-type mice, and the clonogenic survival of null cells subjected to ionizing radiation is reduced. The dephosphorylation of DNA damage/repair markers, such as γH2AX, p53 and Kap1, is diminished in SAPS1-null cells as compared to wild-type controls. Our results demonstrate that loss of SAPS1 confers sensitivity to DNA damage and confirms previously reported cellular phenotypes of SAPS1 knock-down in human glioma cells. The results support a role for PP6 regulatory subunit SAPS1 in DNA damage responses, and offer a novel target for sensitization to enhance current tumor therapies, with a potential for limited deleterious side effects.
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Affiliation(s)
- Jaroslaw Dziegielewski
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Magdalena A Bońkowska
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Ewa A Poniecka
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Jinho Heo
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Kangping Du
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Rowena B Crittenden
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Timothy P Bender
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - David L Brautigan
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - James M Larner
- Center for Cell Signaling, University of Virginia School of Medicine, Charlottesville, VA 22908, USA; Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.
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6
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Moody TW, Lee L, Ramos-Alvarez I, Jensen RT. Neurotensin receptors regulate transactivation of the EGFR and HER2 in a reactive oxygen species-dependent manner. Eur J Pharmacol 2019; 865:172735. [PMID: 31614143 DOI: 10.1016/j.ejphar.2019.172735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 01/06/2023]
Abstract
Neurotensin is a 13 amino acid peptide which is present in many lung cancer cell lines. Neurotensin binds with high affinity to the neurotensin receptor 1, and functions as an autocrine growth factor in lung cancer cells. Neurotensin increases tyrosine phosphorylation of the epidermal growth factor receptor (EGFR) and the neurotensin receptor 1 antagonist SR48692 blocks the transactivation of the EGFR. Here the effects of reactive oxygen species on the transactivation of the EGFR and HER2 were investigated. Using non-small cell lung cancer (NSCLC) cell lines, neurotensin receptor 1 mRNA and protein were present. Using NCI-H838 cells, neurotensin or neurotensin8-13 but not neurotensin1-8 increased EGFR, ERK and HER2 tyrosine phosphorylation which was blocked by SR48692. Neurotensin addition to NCI-H838 cells increased significantly reactive oxygen species which was inhibited by SR48692, Tiron (superoxide scavenger) and diphenylene iodonium (DPI inhibits the ability of NADPH oxidase and dual oxidase enzymes to produce reactive oxygen species). Tiron or DPI impaired the ability of neurotensin to increase EGFR, ERK and HER2 tyrosine phosphorylation. Neurotensin stimulated NSCLC cellular proliferation whereas the growth was inhibited by SR48692, DPI or lapatinib (lapatinib is tyrosine kinase inhibitor of the EGFR and HER2). Lapatinib inhibited the ability of the neurotensin receptor 1 to transactivate the EGFR and HER2. The results indicate that neurotensin receptor 1 regulates the transactivation of the EGFR and HER2 in a reactive oxygen species-dependent manner.
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Affiliation(s)
- Terry W Moody
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, MD, 20892, USA.
| | - Lingaku Lee
- National Institute of Diabetes, Digestive and Kidney Disease, Digestive Diseases Branch, Bethesda, MD, 20892, USA
| | - Irene Ramos-Alvarez
- National Institute of Diabetes, Digestive and Kidney Disease, Digestive Diseases Branch, Bethesda, MD, 20892, USA
| | - Robert T Jensen
- National Institute of Diabetes, Digestive and Kidney Disease, Digestive Diseases Branch, Bethesda, MD, 20892, USA
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He T, Wang M, Wang H, Tan H, Tang Y, Smith E, Wu Z, Liao W, Hu S, Li Z. Evaluation of neurotensin receptor 1 as potential biomarker for prostate cancer theranostic use. Eur J Nucl Med Mol Imaging 2019; 46:2199-2207. [PMID: 31264168 DOI: 10.1007/s00259-019-04355-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 05/01/2019] [Indexed: 01/11/2023]
Abstract
INTRODUCTION Despite recent developments in the diagnosis and treatment of prostate cancer, the advanced stages still have poor survival rates. This warrants further exploration of related molecular targets for patient screening, detection of metastatic disease, and treatment/treatment monitoring. Recent studies have indicated that neurotensin receptors (NTSRs) and their ligand neurotensin (NTS) critically affect the progression of prostate cancers. In this study, we evaluated the expression of neurotensin receptor1 (NTSR1) in patient tissues and performed NTSR1 PET imaging in a prostate cancer animal model. METHODS The NTSR1 expression was evaluated in 97 cases of prostate cancer and 100 cases of benign prostatic hyperplasia (BPH) of clinical patients by immunohistochemistry staining. The expression profile of PSMA and GRPR was also performed for comparison. The mRNA expression of NTSR1 in LnCap and PC-3 cells was measured by PCR. NTSR1 PET, and biodistribution studies were performed in PC-3 xenografts using 18F-DEG-VS-NT. RESULTS NTSR1 showed high or moderate expression in 91.8% of prostate cancer tissue, compared with PSMA (86.7%) and GRPR (65.3%). All examined PSMA-negative tissues showed positive NTSR1 expression, suggesting the potential complementary role of NTSR1 targeted imaging or therapy. Only 8% of BPH shows strong or moderate expression of NTSR1, which is significantly lower than that in prostate cancer (91.8%). PCR results indicated LNCap (an androgen-dependent prostate cancer cell) showed negative NTSR1 expression while PC-3 demonstrated positive expression (an androgen-independent prostate cancer cell), which correlated well with previously reported western blot results. In a preclinical animal model, NTSR1 targeted PET probe 18F-DEG-VS-NT demonstrated prominent tumor accumulation and low background. CONCLUSION We have demonstrated that NTSR1 is a promising molecular marker for prostate cancer based on patient tissue staining. The NTSR targeted probe 18F-DEG-VS-NT demonstrated high tumor to background contrast in animal models, which could be valuable in selecting patients for therapies targeting NTSR1 as well as monitoring therapeutic efficacy during treatment accordingly.
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Affiliation(s)
- Tingting He
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Mengzhe Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hongpei Tan
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Yongxiang Tang
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Eric Smith
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zhanhong Wu
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Weihua Liao
- Department of Radiology of Xiangya Hospital, Central South University, Changsha, China.
| | - Shuo Hu
- PET Center of Xiangya Hospital, Central South University, Changsha, China.
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Ma X, Wang M, Wang H, Zhang T, Wu Z, Sutton MV, Popik VV, Jiang G, Li Z. Development of Bispecific NT-PSMA Heterodimer for Prostate Cancer Imaging: A Potential Approach to Address Tumor Heterogeneity. Bioconjug Chem 2019; 30:1314-1322. [PMID: 31034212 DOI: 10.1021/acs.bioconjchem.9b00252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Prostate cancer is a heterogeneous disease with a poor survival rate at late stage. In this report, a dual targeting PET agent was developed to partially address the tumor heterogeneity issue. The heterodimer F-BCN-PSMA-NT was designed to target PSMA and neurotensin receptor1 (NTR1), both of which have demonstrated great potential in prostate cancer management. The heterodimer was synthesized through the conjugation of Glu-urea-lys(Ahx) (PSMA targeting motif) and NT20.3 (NTR1 targeting motif) to a symmetric trifunctional linker, bearing an azide group for further modification. Radio-labeling was performed using strain promoted azide-alkyne click reaction with high yield. Cell based assays suggested that F-BCN-PSMA-NT has comparable or only slightly reduced binding affinity with the corresponding monomers. Small animal PET clearly demonstrated that the heterodimer probe has prominent uptake not only in NTR1 positive/PSMA negative PC-3 tumors (1.4 ± 0.3%ID/g), but also in the PSMA positive/NTR1 negative LnCap tumors (1.3 ± 0.2%ID/g). The tracer showed comparable tumor to background ratio with each monomer. In summary, prostate cancer is a heterogeneous disease in need of improved diagnostics and treatments. The PSMA-NT heterodimer represents a new class of molecules that can be used to target two distinct antigens related to prostate cancer. In addition to the imaging applications demonstrated in this study, the agent also holds great potential on the treatment of heterogeneous prostate cancer.
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Affiliation(s)
- Xiaofen Ma
- Department of Medical Imaging , Guangdong Second Provincial General Hospital , Guangzhou City , Guangdong Province 510317 , P. R. China.,Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Mengzhe Wang
- Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Hui Wang
- Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Tao Zhang
- Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Zhanhong Wu
- Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Mariia V Sutton
- Department of Chemistry , University of Georgia , Athens , Georgia 30602 , United States
| | - Vladimir V Popik
- Department of Chemistry , University of Georgia , Athens , Georgia 30602 , United States
| | - Guihua Jiang
- Department of Medical Imaging , Guangdong Second Provincial General Hospital , Guangzhou City , Guangdong Province 510317 , P. R. China
| | - Zibo Li
- Biomedical Research Imaging Center, Department of Radiology , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
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Neurotensin Receptor-1 Expression in Human Prostate Cancer: A Pilot Study on Primary Tumors and Lymph Node Metastases. Int J Mol Sci 2019; 20:ijms20071721. [PMID: 30959962 PMCID: PMC6479796 DOI: 10.3390/ijms20071721] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/27/2019] [Accepted: 04/01/2019] [Indexed: 01/06/2023] Open
Abstract
Neurotensin and its high-affinity receptor, NTR1, are involved in the growth of various tumors. Few data are available regarding NTR1 expression in normal and tumoral human prostate tissue samples. NTR1 expression was assessed using immunohistochemistry in 12 normal prostate tissues, 11 benign prostatic hyperplasia (BPH), 44 prostate cancers, and 15 related metastatic lymph nodes (one per patient, when available). NTR1-staining was negative in normal prostate and BPH samples. NTR1 was overexpressed in four out of 44 (9.1%) primary tumors. There was no clear association between NTR1 overexpression and age, PSA-values, Gleason score, pT-status, nodal-status, or margin. NTR1 was expressed at a high level of five out of 15 (33.3%) metastatic lymph nodes. NTR1 overexpression was thus more frequent in metastatic lymph nodes than in primary tumors (p = 0.038). In this limited series of samples, NTR1 overexpression was observed in few primary prostate cancers. Upregulation was more frequent in related lymph nodes. The presence of this target in metastatic lymph nodes may open new perspectives for imaging and radionuclide therapy of prostate cancer. Factors driving NTR1 expression in primary prostate cancer and in nodal and distant metastases still need to be characterized.
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10
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Wang M, Vannam R, Lambert WD, Xie Y, Wang H, Giglio B, Ma X, Wu Z, Fox J, Li Z. Hydrophilic 18F-labeled trans-5-oxocene (oxoTCO) for efficient construction of PET agents with improved tumor-to-background ratios in neurotensin receptor (NTR) imaging. Chem Commun (Camb) 2019; 55:2485-2488. [PMID: 30735213 DOI: 10.1039/c8cc09747j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An 18F-labeled trans-5-oxocene (oxoTCO) that is used to construct a PET probe for neurotensin receptor (NTR) imaging through tetrazine ligation is described here. PET probe construction proceeds with 70% RCY based on 18F-oxoTCO and is completed within seconds. The in vivo behaviour of the oxoTCO based PET probe was compared with those of analogous probes that were prepared from 18F-labeled s-TCO and d-TCO tracers. The hydrophilic 18F-oxoTCO probe showed a significantly higher tumor-to-background ratio while displaying comparable tumor uptake relative to the 18F-dTCO and 18F-sTCO derived probes.
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Affiliation(s)
- Mengzhe Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
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Zhu S, Tian H, Niu X, Wang J, Li X, Jiang N, Wen S, Chen X, Ren S, Xu C, Chang C, Flores-Morales A, Shang Z, Sun Y, Niu Y. Neurotensin and its receptors mediate neuroendocrine transdifferentiation in prostate cancer. Oncogene 2019; 38:4875-4884. [PMID: 30770901 PMCID: PMC6756221 DOI: 10.1038/s41388-019-0750-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/22/2018] [Accepted: 11/27/2018] [Indexed: 02/08/2023]
Abstract
Castration-resistant prostate cancer (CRPC) with neuroendocrine differentiation (NED) is a lethal disease for which effective therapies are urgently needed. The mechanism underlying development of CRPC with NED, however, remains largely uncharacterized. In this study, we explored and characterized the functional role of neurotensin (NTS) in cell line and animal models of CRPC with NED. NTS was acutely induced by androgen deprivation in animal models of prostate cancer (PCa) and activated downstream signaling leading to NED through activation of neurotensin receptor 1 (NTSR1) and neurotensin receptor 3 (NTSR3), but not neurotensin receptor 2 (NTSR2). Our findings also revealed the existence of a CK8+/CK14+ subpopulation in the LNCaP cell line that expresses high levels of both NTSR1 and NTSR3, and displays an enhanced susceptibility to develop neuroendocrine-like phenotypes upon treatment with NTS. More importantly, NTSR1 pathway inhibition prevented the development of NED and castration resistance in vivo. We propose a novel role of NTS in the development of CRPC with NED, and a possible strategy to prevent the onset of NED by targeting the NTS signaling pathway.
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Affiliation(s)
- Shimiao Zhu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Hao Tian
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Xiaodan Niu
- University of Minnesota, Minnesota, MN, 55455, USA
| | - Jiang Wang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Xing Li
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Ning Jiang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Simeng Wen
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Xuanrong Chen
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China
| | - Shancheng Ren
- Department of Urology, Changhai Hospital, Second Military Medical University, 200433, Shanghai, China
| | - Chuanliang Xu
- Department of Urology, Changhai Hospital, Second Military Medical University, 200433, Shanghai, China
| | - Chawnshang Chang
- Department of Pathology, University of Rochester, Rochester, NY, 14620, USA
| | - Amilcar Flores-Morales
- Department of Health Science, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Zhiqun Shang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China.
| | - Yinghao Sun
- Department of Urology, Changhai Hospital, Second Military Medical University, 200433, Shanghai, China.
| | - Yuanjie Niu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, 300211, Tianjin, China.
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12
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Akter H, Yoon JH, Yoo YS, Kang MJ. Validation of Neurotensin Receptor 1 as a Therapeutic Target for Gastric Cancer. Mol Cells 2018; 41:591-602. [PMID: 29794962 PMCID: PMC6030244 DOI: 10.14348/molcells.2018.0025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/13/2018] [Accepted: 03/20/2018] [Indexed: 12/15/2022] Open
Abstract
Gastric cancer is the fifth most common type of malignancy worldwide, and the survival rate of patients with advanced-stage gastric cancer is low, even after receiving chemotherapy. Here, we validated neurotensin receptor 1 (NTSR1) as a potential therapeutic target in gastric cancer. We compared NTSR1 expression levels in sixty different gastric cancer-tissue samples and cells, as well as in other cancer cells (lung, breast, pancreatic, and colon), by assessing NTSR1 expression via semi-quantitative real-time reverse transcription polymerase chain reaction, immunocytochemistry and western blot. Following neurotensin (NT) treatment, we analyzed the expression and activity of matrix metalloproteinase-9 (MMP-9) and further determined the effects on cell migration and invasion via wound-healing and transwell assays. Our results revealed that NTSR1 mRNA levels were higher in gastric cancer tissues than non-cancerous tissues. Both of NTSR1 mRNA levels and expression were higher in gastric cancer cell lines relative to levels observed in other cancer-cell lines. Moreover, NT treatment induced MMP-9 expression and activity in all cancer cell lines, which was significantly decreased following treatment with the NTSR1 antagonist SR48692 or small-interfering RNA targeting NTSR1. Furthermore, NT-mediated metastases was confirmed by observing epithelial-mesenchymal transition markers SNAIL and E-cadherin in gastric cancer cells. NT-mediated invasion and migration of gastric cancer cells were reduced by NTSR1 depletion through the Erk signaling. These findings strongly suggested that NTR1 constitutes a potential therapeutic target for the inhibition of gastric cancer invasion and metastasis.
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Affiliation(s)
- Hafeza Akter
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792,
Korea
- Department of Biological Chemistry, University of Science and Technology, Daejeon 34113,
Korea
| | - Jung Hwan Yoon
- Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul 06591,
Korea
| | - Young Sook Yoo
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792,
Korea
| | - Min-Jung Kang
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792,
Korea
- Department of Biological Chemistry, University of Science and Technology, Daejeon 34113,
Korea
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13
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Deng H, Wang H, Zhang H, Wang M, Giglio B, Ma X, Jiang G, Yuan H, Wu Z, Li Z. Imaging Neurotensin Receptor in Prostate Cancer With 64Cu-Labeled Neurotensin Analogs. Mol Imaging 2018; 16:1536012117711369. [PMID: 28849698 PMCID: PMC6081756 DOI: 10.1177/1536012117711369] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
INTRODUCTION Neurotensin receptor 1 (NTR-1) is expressed and activated in prostate cancer cells. In this study, we explore the NTR expression in normal mouse tissues and study the positron emission tomography (PET) imaging of NTR in prostate cancer models. MATERIALS AND METHODS Three 64Cu chelators (1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid [DOTA], 1,4,7-triazacyclononane-N,N',N″-triacetic acid [NOTA], or AmBaSar) were conjugated to an NT analog. Neurotensin receptor binding affinity was evaluated using cell binding assay. The imaging profile of radiolabeled probes was compared in well-established NTR+ HT-29 tumor model. Stability of the probes was tested. The selected agents were further evaluated in human prostate cancer PC3 xenografts. RESULTS All 3 NT conjugates retained the majority of NTR binding affinity. In HT-29 tumor, all agents demonstrated prominent tumor uptake. Although comparable stability was observed, 64Cu-NOTA-NT and 64Cu-AmBaSar-NT demonstrated improved tumor to background contrast compared with 64Cu-DOTA-NT. Positron emission tomography/computed tomography imaging of the NTR expression in PC-3 xenografts showed high tumor uptake of the probes, correlating with the in vitro Western blot results. Blocking experiments further confirmed receptor specificity. CONCLUSIONS Our results demonstrated that 64Cu-labeled neurotensin analogs are promising imaging agents for NTR-positive tumors. These agents may help us identify NTR-positive lesions and predict which patients and individual tumors are likely to respond to novel interventions targeting NTR-1.
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Affiliation(s)
- Huaifu Deng
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,2 PET/CT Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hui Wang
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - He Zhang
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,3 Department of Radiology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Mengzhe Wang
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ben Giglio
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Xiaofen Ma
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,4 Department of Medical Imaging, Provincial People's Hospital, Guangzhou, China
| | - Guihua Jiang
- 4 Department of Medical Imaging, Provincial People's Hospital, Guangzhou, China
| | - Hong Yuan
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zhanhong Wu
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zibo Li
- 1 Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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14
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Ye Y, Long X, Zhang L, Chen J, Liu P, Li H, Wei F, Yu W, Ren X, Yu J. NTS/NTR1 co-expression enhances epithelial-to-mesenchymal transition and promotes tumor metastasis by activating the Wnt/β-catenin signaling pathway in hepatocellular carcinoma. Oncotarget 2018; 7:70303-70322. [PMID: 27611941 PMCID: PMC5342554 DOI: 10.18632/oncotarget.11854] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 08/23/2016] [Indexed: 01/07/2023] Open
Abstract
Neurotensin (NTS) is a neuropeptide distributed in central nervous and digestive systems. In this study, the significant association between ectopic NTS expression and tumor invasion was confirmed in hepatocellular carcinoma (HCC). In primary HCC tissues, the NTS and neurotensin receptor 1 (NTR1) co-expression (NTS+NTR1+) is a poor prognostic factor correlated with aggressive biological behaviors and poor clinical prognosis. Enhanced epithelial-to-mesenchymal transition (EMT) features, including decreased E-cadherin, increased β-catenin translocation and N-cadherin expression, were identified in NTS+NTR1+ HCC tissues. Varied NTS-responsible HCC cell lines were established using NTR1 genetically modified Hep3B and HepG2 cells which were used to elucidate the molecular mechanisms regulating NTS-induced EMT and tumor invasion in vitro. Results revealed that inducing exogenous NTS stimulation and enhancing NTR1 expression promoted tumor invasion rather than proliferation by accelerating EMT in HCC cells. The NTS-induced EMT was correlated with the remarkable increase in Wnt1, Wnt3, Wnt5, Axin, and p-GSK3β expression and was significantly reversed by blocking the NTS signaling via the NTR1 antagonist SR48692 or by inhibiting the activation of the Wnt/β-catenin pathway via specific inhibitors, such as TSW119 and DKK-1. SR48692 also inhibited the metastases of NTR1-overexpressing HCC xenografts in the lungs in vivo. This finding implied that NTS may be an important stimulus to promote HCC invasion and metastasis both in vitro and in vivo, and NTS signaling enhanced the tumor EMT and invasion potentials by activating the canonical Wnt/β-catenin signaling pathway. Therefore, NTS may be a valuable therapeutic target to prevent tumor progression in HCC.
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Affiliation(s)
- Yingnan Ye
- Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P. R. China
| | - Xinxin Long
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Lijie Zhang
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Jieying Chen
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Pengpeng Liu
- Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P. R. China
| | - Hui Li
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China.,Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P. R. China
| | - Feng Wei
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Wenwen Yu
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Xiubao Ren
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
| | - Jinpu Yu
- Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P. R. China.,Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, P. R. China
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15
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Yao B, Liu B, Shi L, Li X, Ren C, Cai M, Wang W, Li J, Sun Y, Wu Y, Wen J. PAFR selectively mediates radioresistance and irradiation-induced autophagy suppression in prostate cancer cells. Oncotarget 2017; 8:13846-13854. [PMID: 28099922 PMCID: PMC5355143 DOI: 10.18632/oncotarget.14647] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 01/03/2017] [Indexed: 01/12/2023] Open
Abstract
Platelet-activating factor receptor (PAFR) promotes tumorigenesis, angiogenesis and metastasis. Here, we defined the PAFR as a yielding new inhibiting target to selectively enhance the sensitivity of prostate cancer (PCa) cells to radiation. The selective responding to PAFR inhibiter may be caused by the differential expression pattern of PAFR in PCa cells. In this study, we also determined PAFR as a molecular basis by which the radiation induces autophagy suppression independent of activating mTOR pathway. PAFR can bind to the autophagy-indispensable protein Beclin 1, leading to the disability in its serine phosphorylation. The PAFR antagonist Ginkgolide B (GB) can sensitize radiotherapy by disrupting the formation of PAFR/Beclin 1 complex in PC3 and LNCaP cells, which have elevated PAFR expression after radiation exposure. Most importantly, GB efficiently radiosensitized PC3 and LNCaP tumor xenografts in vivo, and significantly reduced tumor burden. Overall, our results elucidated a significant role of GB in selectively improving the outcomes of PCa receiving radiation therapy.
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Affiliation(s)
- Bing Yao
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bingqian Liu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lei Shi
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiang Li
- Department of Plastic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chuanchuan Ren
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mingbo Cai
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wen Wang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jianhua Li
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yongde Sun
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yudong Wu
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jianguo Wen
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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16
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Expression of neurotensin receptor 1 in endometrial adenocarcinoma is correlated with histological grade and clinical outcome. Virchows Arch 2017; 471:521-530. [PMID: 28836043 DOI: 10.1007/s00428-017-2215-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 07/08/2017] [Accepted: 08/06/2017] [Indexed: 12/24/2022]
Abstract
The promalignant effects of neurotensin (NTS) are sustained in many solid tumors, including hormone-dependent cancers. As the endometrium is also subjected to hormonal regulation, we evaluated the contribution of NTS to endometrial carcinogenesis. Neurotensin receptor 1 (NTSR1) expression and NTSR1 promoter methylation (HM450) were analyzed in 385 cases of endometrial carcinoma from The Cancer Genome Atlas (TCGA). Additionally, from a series of 100 endometrial carcinomas, and 66 benign endometrium samples, NTS and NTSR1 labeling was evaluated by immunohistochemistry. Using TCGA series, NTSR1 messenger RNA (mRNA) level was negatively correlated with overall survival (OS) and progression-free survival (PFS) (p = 0.0012 and p = 0.0116, respectively), and positively correlated with the grade (p = 0.0008). When including only endometrioid carcinomas, NTSR1 mRNA level continued to be negatively correlated with OS (log-rank: p < 0.0001) and PFS (log-rank: p = 0.002). A higher NTSR1 mRNA level was significantly associated with a loss of NTSR1 promoter methylation. Immunohistochemical expression of NTS and NTSR1 was significantly increased in adenocarcinoma (n = 100), as compared to benign endometrium (p < 0.001). NTSR1 expression was positively correlated with grade (p = 0.004). High immunohistochemical expression of cytoplasmic NTSR1 was significantly correlated with a shorter OS and PFS (p < 0.001 and p = 0.001, respectively). This correlation remained significant when excluding non-endometrioid subtypes (p = 0.04 and p = 0.02, respectively). In multivariate analysis, the expression of NTSR1 was an independent prognostic factor (p = 0.004). NTSR1 overexpression is a poor prognostic factor in endometrial cancer, highlighting the contribution of NTS in endometrial cancer progression and its uses as a prognostic marker, and as a potential therapeutic target.
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17
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Yin X, Wang M, Wang H, Deng H, He T, Tan Y, Zhu Z, Wu Z, Hu S, Li Z. Evaluation of neurotensin receptor 1 as a potential imaging target in pancreatic ductal adenocarcinoma. Amino Acids 2017; 49:1325-1335. [PMID: 28536844 PMCID: PMC5524142 DOI: 10.1007/s00726-017-2430-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 04/26/2017] [Indexed: 12/11/2022]
Abstract
Pancreatic cancer is one of the deadliest human malignancies and lack of effective diagnostic and therapeutic methods. Accumulating evidence suggests that the neurotensin (NT) and neurotensin receptors (NTRs) play key roles in pancreatic adenocarcinoma growth and survival. In this study, we not only evaluate the NTR1 expression in pancreatic cancer patient samples, but also explore the PET and fluorescence imaging of NTR1 expression in pancreatic cancer animal models. The NTR1 expression was evaluated by immunohistochemistry staining in clinical patient tissue samples with pancreatic ductal adenocarcinoma, insulinoma, and pancreatitis. The results showed 79.4% positive rate of NRT1 expression in pancreatic ductal adenocarcinoma, compared with 33.3 and 22.7% in insulinoma and pancreatitis samples, respectively. High NTR1 gene expression was also found in Panc-1 cells and confirmed by cell immunofluorescence. 64Cu-AmBaSar-NT and IRDye800-NT were synthesized as imaging probes and maintained the majority of NTR1-binding affinity. In vivo imaging demonstrated that 64Cu-AmBaSar-NT has prominent tumor uptake (3.76 ± 1.45 and 2.29 ± 0.10%ID/g at 1 and 4 h post-injection). NIR fluorescent imaging with IRDye800-NT demonstrated good tumor-to-background contrast (8.09 ± 0.38 × 108 and 6.67 ± 0.43 × 108 (p/s/cm2/sr)/(μW/cm2) at 30 and 60 min post-injection). Fluorescence guided surgery was also performed as a proof of principle experiment. In summary, our results indicated that NTR1 is a promising target for pancreatic ductal adenocarcinoma imaging and therapy. The imaging probes reported here may not only be considered for improved diagnosis of pancreatic ductal adenocarcinoma, but also has the potential to be fully integrated into patient screening and treatment monitoring of future NTR1 targeted therapies.
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Affiliation(s)
- Xiaoqin Yin
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Mengzhe Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Huaifu Deng
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Tingting He
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Yue Tan
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Zehua Zhu
- PET Center of Xiangya Hospital, Central South University, Changsha, China
| | - Zhanhong Wu
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Shuo Hu
- PET Center of Xiangya Hospital, Central South University, Changsha, China.
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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18
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Kim JT, Weiss HL, Evers BM. Diverse expression patterns and tumorigenic role of neurotensin signaling components in colorectal cancer cells. Int J Oncol 2017; 50:2200-2206. [PMID: 28498396 PMCID: PMC5435327 DOI: 10.3892/ijo.2017.3990] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/02/2017] [Indexed: 12/29/2022] Open
Abstract
Colorectal cancer (CRC), which is one of the most common malignancies worldwide, results from an accumulation of genetic and epigenetic modifications including DNA methylation. Neurotensin (NTS), a hormone localized to the gut and central nervous system, mediates its physiological and pathological effects, including growth stimulation for a variety of cancers, through three distinct NTS receptors (NTSRs). Most NTS functions are mediated through the high-affinity receptor NTSR1, and expression of NTSR1 is increased in many cancers including CRC. In this study, we investigated the expression profiles and cellular functions of the NTSRs, especially NTSR1, in CRC cells. We showed that expression levels for NTS and NTSR1 varied, that NTSR2 expression was not detectable and that NTSR3 was consistently expressed in all CRC cell lines examined. Treatment with the demethylating agent, 5-aza-2'-deoxycytidine, augmented levels of NTSR1/2 in Caco2 and DLD1 cells, which have little or no transcripts for NTSR1/2 suggesting that DNA methylation suppresses NTSR1/2 expression. In addition, we demonstrated that knockdown of NTSR1 decreased cell growth and migration in HCT116 and HT29 cells. Finally, we showed that treatment with SR48692, an antagonist of NTSR1, also inhibited cell proliferation and migration in the CRC cells. Our findings identify promoter methylation as an important process regulating the differential expression or silencing of NTSR1/2 in CRC cells. Moreover, inhibition of NTSR1 repressed tumorigenic effects in CRC cells, suggesting that NTSR1 may be used as a therapeutic target for CRC.
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Affiliation(s)
- Ji Tae Kim
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Heidi L Weiss
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - B Mark Evers
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
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Iwamoto Y, Ishii K, Kanda H, Kato M, Miki M, Kajiwara S, Arima K, Shiraishi T, Sugimura Y. Combination treatment with naftopidil increases the efficacy of radiotherapy in PC-3 human prostate cancer cells. J Cancer Res Clin Oncol 2017; 143:933-939. [PMID: 28243746 DOI: 10.1007/s00432-017-2367-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 02/06/2017] [Indexed: 12/16/2022]
Abstract
PURPOSE Clinically, radiotherapy (RT) often leads to the development of prostate cancer (PCa) resistance because of protective responses in cancer cells. One of the mechanisms includes the upregulation of RT-induced antioxidant enzymes. Thus, combination therapy with RT and certain pharmaceutical drugs targeting antioxidant enzymes may be ideal for increasing the efficacy of RT with minimum side effects. Naftopidil is a subtype-selective α1D-adrenoceptor antagonist used for the treatment of benign prostatic hyperplasia (BPH). In our drug repositioning study, naftopidil showed not only unique growth-inhibitory effects but also AKT phosphorylation-inhibitory effects in PC-3 human PCa cells. Here, we examined the efficacy of additive naftopidil treatment in combination with RT in PC-3 cells. METHODS The effects of combination therapy with RT plus naftopidil were analyzed using an animal model of PC-3 xenografts in BALB/c nude mice. The expression of the antioxidant enzyme manganese superoxide dismutase (MnSOD) was evaluated by western blotting. RESULTS Combination therapy with RT plus naftopidil induced a more efficacious delay in PC-3 xenograft tumor growth as compared with monotherapy with naftopidil or RT. In PC-3 tumors, combination therapy with RT plus naftopidil suppressed the upregulation of RT-induced MnSOD expression. In vitro, neither AKT inhibitor IV nor naftopidil directly altered MnSOD expression. Upregulation of RT-induced MnSOD expression was markedly suppressed by combination treatment with RT plus AKT inhibitor IV or naftopidil. CONCLUSIONS These results suggest that additive naftopidil treatment in combination with RT may increase the efficacy of RT for the treatment of PCa.
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Affiliation(s)
- Yoichi Iwamoto
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Kenichiro Ishii
- Department of Oncologic Pathology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hideki Kanda
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Manabu Kato
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Manabu Miki
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Shinya Kajiwara
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Kiminobu Arima
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Taizo Shiraishi
- Department of Diagnostic Pathology, Kuwana City Medical Center, Kuwana, Mie, Japan
| | - Yoshiki Sugimura
- Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
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Zhang G, Wang K, Li XD, Zhang DL, Xu F. Discovery of novel antagonists of human neurotensin receptor 1 on the basis of ligand and protein structure. Biomed Pharmacother 2016; 84:147-157. [DOI: 10.1016/j.biopha.2016.09.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 09/08/2016] [Accepted: 09/08/2016] [Indexed: 12/25/2022] Open
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21
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Differential expression and tumorigenic function of neurotensin receptor 1 in neuroendocrine tumor cells. Oncotarget 2016; 6:26960-70. [PMID: 26298774 PMCID: PMC4694966 DOI: 10.18632/oncotarget.4745] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/15/2015] [Indexed: 01/27/2023] Open
Abstract
Neurotensin (NTS), localized predominantly to the small bowel, stimulates the growth of a variety of cancers, including neuroendocrine tumors (NETs), mainly through its interaction with the high-affinity NTS receptor 1 (NTSR1). Here, we observed increased expression of NTSR1 in almost all tested clinical NET samples, but not in normal tissues. Through RT-PCR analysis, we found that the expression of NTSR1 and NTSR2 was either variable (NTSR1) or absent (NTSR2) in human NET cell lines. In contrast, NTSR3 and NTS were expressed in all NET cells. Treatment with 5-aza-2′-deoxycytidine, a demethylating agent, increased levels of NTSR1 and NTSR2 suggesting that DNA methylation contributes to NTSR1/2 expression patterns, which was confirmed by methylation analyses. In addition, we found that knockdown of NTSR1 decreased proliferation, expression levels of growth-related proteins, and anchorage-independent growth of BON human carcinoid cells. Moreover, stable silencing of NTSR1 suppressed BON cell growth, adhesion, migration and invasion. Our results show that high expression of NTSR1 is found in clinical NETs and that promoter methylation is an important mechanism controlling the differential expression of NTSR1 and silencing of NTSR2 in NET cells. Furthermore, knockdown of NTSR1 in BON cells suppressed oncogenic functions suggesting that NTSR1 contributes to NET tumorigenesis.
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22
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Aoun F, Kourie HR, Artigas C, Roumeguère T. Next revolution in molecular theranostics: personalized medicine for urologic cancers. Future Oncol 2015; 11:2205-19. [DOI: 10.2217/fon.15.104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Extensive lists of molecular biomarkers are currently evaluated as potential targets for directed cancer therapies. We reviewed three potential candidate biomarkers to play a role in the near future as molecular theranostics for urologic malignancies. Carbonic anhydrase type IX is a surrogate marker of hypoxia highly expressed in cancer cells. Their expression and clinical significance in kidney and urothelial bladder cancer are discussed as well as the main therapeutic approaches that are currently under evaluation. For prostate cancer, available evidence on the use of prostate-specific membrane antigen and neuropeptide receptors radiolabeled analog and the undergoing clinical studies are also analyzed and discussed at different stages of prostate cancer.
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Affiliation(s)
- Fouad Aoun
- Université Libre de Bruxelles, 50 Franklin Roosevelt Avenue, 1050 Brussels, Belgium
- Jules Bordet Institute, 121 Boulevard de Waterloo, 1000 Brussels, Belgium
| | - Hampig Raphael Kourie
- Université Libre de Bruxelles, 50 Franklin Roosevelt Avenue, 1050 Brussels, Belgium
- Jules Bordet Institute, 121 Boulevard de Waterloo, 1000 Brussels, Belgium
| | - Carlos Artigas
- Université Libre de Bruxelles, 50 Franklin Roosevelt Avenue, 1050 Brussels, Belgium
- Jules Bordet Institute, 121 Boulevard de Waterloo, 1000 Brussels, Belgium
| | - Thierry Roumeguère
- Université Libre de Bruxelles, 50 Franklin Roosevelt Avenue, 1050 Brussels, Belgium
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23
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Deng H, Wang H, Wang M, Li Z, Wu Z. Synthesis and Evaluation of 64Cu-DOTA-NT-Cy5.5 as a Dual-Modality PET/Fluorescence Probe to Image Neurotensin Receptor-Positive Tumor. Mol Pharm 2015; 12:3054-61. [PMID: 26162008 DOI: 10.1021/acs.molpharmaceut.5b00325] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Overexpression of neurotensin receptors (NTRs) has been suggested to play important roles in the growth and survival of a variety of tumor types. The aim of this study is to develop a dual-modality probe (64Cu -DOTA-NT-Cy5.5) for imaging NTR1 expression in vivo with both positron emission tomography (PET) and fluorescence. In this approach, the thiol group and N terminal amino group of neurotensin analogue (Cys-NT) were chemically modified with Cy5.5 dye and DOTA chelator, respectively. After radiolabeling with 64Cu, the resulting probe (64Cu-DOTA-NT-Cy5.5) was evaluated in NTR1 positive HT-29 tumor model. Small animal PET quantification analysis demonstrated that the tumor uptake was 1.91±0.22 and 1.79±0.16%ID/g at 1 and 4 h postinjection (p.i.), respectively. The tumor-to-muscle ratio was 17.44±3.25 at 4 h p.i. based on biodistribution. Receptor specificity was confirmed by the successful blocking experiment at 4 h p.i. (0.42±0.05%ID/g). In parallel with PET experiment, fluorescence imaging was also performed, which demonstrated prominent tumor uptake in HT-29 model. As a proof of concept, an imaging guided surgery was performed to the fluorescent moiety of this probe and could provide potential surgery guidance for NTR positive patients. In summary, our results clearly indicated that the dual-modality probe, 64Cu-DOTA-NT-Cy5.5, could serve as a promising agent to image NTR positive tumors in vivo.
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Affiliation(s)
- Huaifu Deng
- †Biomedical Research Imaging Center and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.,‡PET/CT Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510230, China
| | - Hui Wang
- †Biomedical Research Imaging Center and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mengzhe Wang
- †Biomedical Research Imaging Center and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Zibo Li
- †Biomedical Research Imaging Center and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Zhanhong Wu
- †Biomedical Research Imaging Center and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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24
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Guo S, Yan F, Xu J, Bao Y, Zhu J, Wang X, Wu J, Li Y, Pu W, Liu Y, Jiang Z, Ma Y, Chen X, Xiong M, Jin L, Wang J. Identification and validation of the methylation biomarkers of non-small cell lung cancer (NSCLC). Clin Epigenetics 2015; 7:3. [PMID: 25657825 PMCID: PMC4318209 DOI: 10.1186/s13148-014-0035-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 12/10/2014] [Indexed: 11/26/2022] Open
Abstract
Background DNA methylation was suggested as the promising biomarker for lung cancer diagnosis. However, it is a great challenge to search for the optimal combination of methylation biomarkers to obtain maximum diagnostic performance. Results In this study, we developed a panel of DNA methylation biomarkers and validated their diagnostic efficiency for non-small cell lung cancer (NSCLC) in a large Chinese Han NSCLC retrospective cohort. Three high-throughput DNA methylation microarray datasets (458 samples) were collected in the discovery stage. After normalization, batch effect elimination and integration, significantly differentially methylated genes and the best combination of the biomarkers were determined by the leave-one-out SVM (support vector machine) feature selection procedure. Then, candidate promoters were examined by the methylation status determined single nucleotide primer extension technique (MSD-SNuPET) in an independent set of 150 pairwise NSCLC/normal tissues. Four statistical models with fivefold cross-validation were used to evaluate the performance of the discriminatory algorithms. The sensitivity, specificity and accuracy were 86.3%, 95.7% and 91%, respectively, in Bayes tree model. The logistic regression model incorporated five gene methylation signatures at AGTR1, GALR1, SLC5A8, ZMYND10 and NTSR1, adjusted for age, sex and smoking, showed robust performances in which the sensitivity, specificity, accuracy, and area under the curve (AUC) were 78%, 97%, 87%, and 0.91, respectively. Conclusions In summary, a high-throughput DNA methylation microarray dataset followed by batch effect elimination can be a good strategy to discover optimal DNA methylation diagnostic panels. Methylation profiles of AGTR1, GALR1, SLC5A8, ZMYND10 and NTSR1, could be an effective methylation-based assay for NSCLC diagnosis. Electronic supplementary material The online version of this article (doi:10.1186/s13148-014-0035-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shicheng Guo
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China ; Fudan-Taizhou Institute of Health Sciences, 1 Yaocheng Road, Taizhou, Jiangsu 225300 China
| | - Fengyang Yan
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China
| | - Jibin Xu
- Department of Cardiothoracic Surgery, Changzheng Hospital of Shanghai, Fengyang Road 415, Shanghai, 200000 China
| | - Yang Bao
- Yangzhou No.1 People's Hospital, 368 Hanjiang Road, Yangzhou, 225001 China
| | - Ji Zhu
- Department of Cardiothoracic Surgery, Changhai Hospital of Shanghai, Changhai Road 168, Shanghai, 200433 China
| | - Xiaotian Wang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China
| | - Junjie Wu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China ; Department of Pneumology, Changhai Hospital of Shanghai, Changhai Road 168, Shanghai, 200433 China
| | - Yi Li
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China
| | - Weilin Pu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China
| | - Yan Liu
- Center for Genetic & Genomic Analysis, Genesky Biotechnologies Inc., 787 Kangqiao Road, Shanghai, 201203 China
| | - Zhengwen Jiang
- Center for Genetic & Genomic Analysis, Genesky Biotechnologies Inc., 787 Kangqiao Road, Shanghai, 201203 China
| | - Yanyun Ma
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China
| | - Xiaofeng Chen
- Department of Cardiothoracic Surgery, Huashan Hospital, Fudan University, 12 Wulumuqi Road, Shanghai, 200040 China
| | - Momiao Xiong
- Human Genetics Center, The University of Texas School of Public Health, 1200 Herman Pressler, Houston, Texas 77030 USA
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China ; Fudan-Taizhou Institute of Health Sciences, 1 Yaocheng Road, Taizhou, Jiangsu 225300 China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University Jiangwan Campus, 2005 Songhu Road, Shanghai, 200438 China ; Fudan-Taizhou Institute of Health Sciences, 1 Yaocheng Road, Taizhou, Jiangsu 225300 China
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25
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Ye Y, Liu P, Wang Y, Li H, Wei F, Cheng Y, Han L, Yu J. Neurotensin, a Novel Messenger to Cross-Link Inflammation and Tumor Invasion via Epithelial-Mesenchymal Transition Pathway. Int Rev Immunol 2014; 35:340-350. [PMID: 25215420 DOI: 10.3109/08830185.2014.952412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Multiple cytokines and growth factors are critical for the prognosis of cancer which has been regarded as a worldwide health problem. Recently, neuropeptides, soluble factors regulating a series of functions in the central nervous system, have also been demonstrated to stimulate the proliferation and migration of tumor cells. Among these signaling peptides, the role of neurotensin (NTS) on malignancy procession has become a hot topic. The effects of NTS on tumor growth and its antiapoptosis role have already been identified. Subsequently, studies demonstrated the impact of NTS on the migration and invasion, but the molecular mechanisms involved are still unclear at present. Recently, some reports indicated that NTS could induce expression and secretion of interleukin-8 (IL-8) to promote local imflammatory response which might participate in epithelial-mesenchymal transition (EMT)-related tumor migration. In present review, we highlight the process of tumor EMT induced by NTS through stimulating IL-8 and the significance of NTS/IL-8 pathway in clinical application prospect.
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Affiliation(s)
- Yingnan Ye
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Pengpeng Liu
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Yue Wang
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Hui Li
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Feng Wei
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
| | - Yanan Cheng
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Lei Han
- b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China
| | - Jinpu Yu
- a Department of Immunology , Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China.,b Cancer Molecular Diagnostic Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Prevention and Therapy , Tianjin , P. R. China.,c Biotherapy Center, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Caner, Key Laboratory of Cancer Immunology and Biotherapy , Tianjin , P. R. China
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26
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Zhou J, Yi L, Ouyang Q, Xu L, Cui H, Xu M. Neurotensin signaling regulates stem-like traits of glioblastoma stem cells through activation of IL-8/CXCR1/STAT3 pathway. Cell Signal 2014; 26:2896-902. [PMID: 25200966 DOI: 10.1016/j.cellsig.2014.08.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 08/29/2014] [Indexed: 11/26/2022]
Abstract
We recently found that neurotensin (NTS) and its primary receptor NTSR1 play a crucial role in glioblastoma cell proliferation and invasion. However, very little is known regarding the functional role of NTS/NTSR1 signaling in glioblastoma stem cells (GSCs). Here, we showed that NTSR1 is highly expressed in GSCs than its non-GSC counterparts. Pharmacological blockade with SR48692 or lentivirus mediated knockdown of NTSR1 efficiently reduced the sphere-forming ability and expression of stem cell markers such as nestin and Sox2 in GSCs isolated from glioblastoma cell line and glioblastoma tissues. Conversely, treated GSCs with NTS led to increase of tumor sphere formation. Mechanistically, we demonstrated that EGFR-dependent enhancement of IL-8 secretion is responsible for the effect of NTS signaling in the regulation of stem-like traits. Finally, we showed that NTSR1 or IL-8 knockdown decreased the phosphorylation of transcriptional factor STAT3 at Tyr705, which is a major transcription factor implicated in the regulation of GSC stem-like traits. Although both CXCR1 and CXCR2 inhibition reduced the tumor sphere formation, we found that CXCR1, but not CXCR2, is primarily responsible for STAT3 phosphorylation. Taken together, our findings suggest that NTS/IL-8/CXCR1/STAT3 signaling is crucial for the maintenance of stem-like traits in GSCs and provides a potential therapeutic target for glioblastoma therapy.
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Affiliation(s)
- Ji Zhou
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Liang Yi
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Qing Ouyang
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Lunshan Xu
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Institute of Sericulture and Systems Biology, Southwest University, Chongqing 400716, China.
| | - Minhui Xu
- Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing 400042, China.
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27
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Morgat C, Mishra AK, Varshney R, Allard M, Fernandez P, Hindié E. Targeting neuropeptide receptors for cancer imaging and therapy: perspectives with bombesin, neurotensin, and neuropeptide-Y receptors. J Nucl Med 2014; 55:1650-7. [PMID: 25189338 DOI: 10.2967/jnumed.114.142000] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Receptors for some regulatory peptides are highly expressed in tumors. Selective radiolabeled peptides can bind with high affinity and specificity to these receptors and exhibit favorable pharmacologic and pharmacokinetic properties, making them suitable agents for imaging or targeted therapy. The success encountered with radiolabeled somatostatin analogs is probably the first of a long list, as multiple peptide receptors are now recognized as potential targets. This review focuses on 3 neuropeptide receptor systems (bombesin, neurotensin, and neuropeptide-Y) that offer high potential in the field of nuclear oncology. The underlying biology of these peptide/receptor systems, their physiologic and pathologic roles, and their differential distribution in normal and tumoral tissues are described with emphasis on breast, prostate, and lung cancers. Radiolabeled analogs that selectively target these receptors are highlighted.
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Affiliation(s)
- Clément Morgat
- CHU de Bordeaux, Service de Médecine Nucléaire, Bordeaux, France University of Bordeaux, INCIA, UMR 5287, Talence, France CNRS, INCIA, UMR 5287, Talence, France
| | - Anil Kumar Mishra
- University of Bordeaux, INCIA, UMR 5287, Talence, France CNRS, INCIA, UMR 5287, Talence, France Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, DRDO, New Delhi, India; and
| | - Raunak Varshney
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, DRDO, New Delhi, India; and
| | - Michèle Allard
- CHU de Bordeaux, Service de Médecine Nucléaire, Bordeaux, France University of Bordeaux, INCIA, UMR 5287, Talence, France EPHE, Bordeaux, France
| | - Philippe Fernandez
- CHU de Bordeaux, Service de Médecine Nucléaire, Bordeaux, France University of Bordeaux, INCIA, UMR 5287, Talence, France CNRS, INCIA, UMR 5287, Talence, France
| | - Elif Hindié
- CHU de Bordeaux, Service de Médecine Nucléaire, Bordeaux, France University of Bordeaux, INCIA, UMR 5287, Talence, France CNRS, INCIA, UMR 5287, Talence, France
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28
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Thangavel C, Boopathi E, Ciment S, Liu Y, O'Neill R, Sharma A, McMahon SB, Mellert H, Addya S, Ertel A, Birbe R, Fortina P, Dicker AP, Knudsen KE, Den RB. The retinoblastoma tumor suppressor modulates DNA repair and radioresponsiveness. Clin Cancer Res 2014; 20:5468-5482. [PMID: 25165096 DOI: 10.1158/1078-0432.ccr-14-0326] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE Perturbations in the retinoblastoma pathway are over-represented in advanced prostate cancer; retinoblastoma loss promotes bypass of first-line hormone therapy. Conversely, preliminary studies suggested that retinoblastoma-deficient tumors may become sensitized to a subset of DNA-damaging agents. Here, the molecular and in vivo consequence of retinoblastoma status was analyzed in models of clinical relevance. EXPERIMENTAL DESIGN Experimental work was performed with multiple isogenic prostate cancer cell lines (hormone sensitive: LNCaP and LAPC4 cells and hormone resistant C42, 22Rv1 cells; stable knockdown of retinoblastoma using shRNA). Multiple mechanisms were interrogated including cell cycle, apoptosis, and DNA damage repair. Transcriptome analysis was performed, validated, and mechanisms discerned. Cell survival was measured using clonogenic cell survival assay and in vivo analysis was performed in nude mice with human derived tumor xenografts. RESULTS Loss of retinoblastoma enhanced the radioresponsiveness of both hormone-sensitive and castrate-resistant prostate cancer. Hypersensitivity to ionizing radiation was not mediated by cell cycle or p53. Retinoblastoma loss led to alteration in DNA damage repair and activation of the NF-κB pathway and subsequent cellular apoptosis through PLK3. In vivo xenografts of retinoblastoma-deficient tumors exhibited diminished tumor mass, lower PSA kinetics, and decreased tumor growth after treatment with ionizing radiation (P < 0.05). CONCLUSIONS Loss of retinoblastoma confers increased radiosensitivity in prostate cancer. This hypersensitization was mediated by alterations in apoptotic signaling. Combined, these not only provide insight into the molecular consequence of retinoblastoma loss, but also credential retinoblastoma status as a putative biomarker for predicting response to radiotherapy.
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Affiliation(s)
| | - Ettickan Boopathi
- Department of Surgery, Division of Urology, Glenolden, Pennsylvania, USA
| | - Steve Ciment
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Yi Liu
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Raymond O'Neill
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ankur Sharma
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Steve B McMahon
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Hestia Mellert
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Biomedical Graduate Studies, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Molecular, Cellular and Developmental Biology, University of Colorado at Boulder, Colorado, USA
| | - Sankar Addya
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Adam Ertel
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ruth Birbe
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Paolo Fortina
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Adam P Dicker
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Karen E Knudsen
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Urology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Robert B Den
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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29
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Miao L, Holley AK, Zhao Y, St Clair WH, St Clair DK. Redox-mediated and ionizing-radiation-induced inflammatory mediators in prostate cancer development and treatment. Antioxid Redox Signal 2014; 20:1481-500. [PMID: 24093432 PMCID: PMC3936609 DOI: 10.1089/ars.2013.5637] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
SIGNIFICANCE Radiation therapy is widely used for treatment of prostate cancer. Radiation can directly damage biologically important molecules; however, most effects of radiation-mediated cell killing are derived from the generated free radicals that alter cellular redox status. Multiple proinflammatory mediators can also influence redox status in irradiated cells and the surrounding microenvironment, thereby affecting prostate cancer progression and radiotherapy efficiency. RECENT ADVANCES Ionizing radiation (IR)-generated oxidative stress can regulate and be regulated by the production of proinflammatory mediators. Depending on the type and stage of the prostate cancer cells, these proinflammatory mediators may lead to different biological consequences ranging from cell death to development of radioresistance. CRITICAL ISSUES Tumors are heterogeneous and dynamic communication occurs between stromal and prostate cancer cells, and complicated redox-regulated mechanisms exist in the tumor microenvironment. Thus, antioxidant and anti-inflammatory strategies should be carefully evaluated for each patient at different stages of the disease to maximize therapeutic benefits while minimizing unintended side effects. FUTURE DIRECTIONS Compared with normal cells, tumor cells are usually under higher oxidative stress and secrete more proinflammatory mediators. Thus, redox status is often less adaptive in tumor cells than in their normal counterparts. This difference can be exploited in a search for new cancer therapeutics and treatment regimes that selectively activate cell death pathways in tumor cells with minimal unintended consequences in terms of chemo- and radio-resistance in tumor cells and toxicity in normal tissues.
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Affiliation(s)
- Lu Miao
- 1 Graduate Center for Toxicology, University of Kentucky , Lexington, Kentucky
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30
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SR48692 inhibits non-small cell lung cancer proliferation in an EGF receptor-dependent manner. Life Sci 2014; 100:25-34. [PMID: 24496038 DOI: 10.1016/j.lfs.2014.01.072] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 01/09/2014] [Accepted: 01/22/2014] [Indexed: 12/12/2022]
Abstract
AIMS The mechanism by which SR48692 inhibits non-small cell lung cancer (NSCLC) proliferation was investigated. MAIN METHODS The ability of SR48692 to inhibit the proliferation of NSCLC cell lines NCI-H1299 and A549 was investigated in vitro in the presence or absence of neurotensin (NTS). The ability of NTS to cause epidermal growth factor receptor (EGFR) transactivation was investigated by Western blot using NSCLC cells and various inhibitors. The growth effects and Western blot results were determined in cell lines treated with siRNA for NTSR1. KEY FINDINGS Treatment of A549 or NCI-H1299 cells with siRNA for NTSR1 reduced significantly NTSR1 protein and the ability of SR48692 to inhibit the proliferation of A549 or NCI-H1299 NSCLC cells. Treatment of A549 and NCI-H1299 cells with siRNA for NTSR1 reduced the ability of NTS to cause epidermal growth factor receptor (EGFR) transactivation. SR48692 or gefitinib (EGFR tyrosine kinase inhibitor) inhibited the ability of NTS to cause EGFR and ERK tyrosine phosphorylation. NTS transactivation of the EGFR was inhibited by GM6001 (matrix metalloprotease inhibitor), Tiron (superoxide scavenger) or U73122 (phospholipase C inhibitor) but not H89 (PKA inhibitor). NTS stimulates whereas SR48692 or gefitinib inhibits the clonal growth of NSCLC cells. SIGNIFICANCE These results suggest that SR48692 may inhibit NSCLC proliferation in an EGFR-dependent mechanism.
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31
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In vitro and in vivo radiosensitization of human glioma U251 cells induced by upregulated expression of SLC22A18. Cancer Gene Ther 2014; 21:103-9. [PMID: 24481489 DOI: 10.1038/cgt.2014.4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 01/01/2014] [Accepted: 01/10/2014] [Indexed: 01/08/2023]
Abstract
Our previous study showed that solute carrier family 22 (organic cation transporter) member 18 (SLC22A18) downregulation via promoter methylation was associated with the development and progression of glioma, and the elevated expression of SLC22A18 was found to increase the sensitivity of glioma U251 cells to the anticancer drug 1,3-bis(2-chloroethyl)-1-nitrosourea. In this study, we investigated the possible upregulated expression of SLC22A18-induced enhancement of radiosensitivity of human glioma U251 cells in order to provide evidence in support of further clinical investigations. Stably overexpressing SLC22A18 human glioma U251 cells were generated to investigate the effect of SLC22A18 on the sensitivity of cells to irradiation in vitro using clonogenic survival assay. The apoptosis of U251 cells was examined with terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay. DNA damage and repair were measured using γH2AX foci. The effect of SLC22A18 on the in vivo tumor radiosensitivity was investigated in the orthotopic mice model. Upregulated expression of SLC22A18 enhanced the radiosensitivity of glioma U251 cells and also enhanced irradiation-induced apoptosis of U251 cells, but irradiation-induced apoptosis did not correlate with radiosensitizing effect of upregulated expression of SLC22A18. The repair of irradiation-induced double-strand-breaks was retarded in stably overexpressing SLC22A18 U251 cells. In the orthotopic mice model, the upregulated expression of SLC22A18 in U251 cells enhanced the effect of irradiation treatment and increased the survival time of mice. These results show that upregulated expression of SLC22A18 radiosensitizes human glioma U251 cells by suppressing DNA repair capacity.
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Battilocchio C, Deadman BJ, Nikbin N, Kitching MO, Baxendale IR, Ley SV. A Machine-Assisted Flow Synthesis of SR48692: A Probe for the Investigation of Neurotensin Receptor-1. Chemistry 2013; 19:7917-30. [DOI: 10.1002/chem.201300696] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Indexed: 12/22/2022]
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Zhang JX, Wang K, Mao ZF, Fan X, Jiang DL, Chen M, Cui L, Sun K, Dang SC. Application of liposomes in drug development--focus on gastroenterological targets. Int J Nanomedicine 2013; 8:1325-34. [PMID: 23630417 PMCID: PMC3623572 DOI: 10.2147/ijn.s42153] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Over the past decade, liposomes became a focal point in developing drug delivery systems. New liposomes, with novel lipid molecules or conjugates, and new formulations opened possibilities for safely and efficiently treating many diseases including cancers. New types of liposomes can prolong circulation time or specifically deliver drugs to therapeutic targets. This article concentrates on current developments in liposome based drug delivery systems for treating diseases of the gastrointestinal tract. We will review different types and uses of liposomes in the development of therapeutics for gastrointestinal diseases including inflammatory bowel diseases and colorectal cancer.
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Affiliation(s)
- Jian-Xin Zhang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Kun Wang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Zheng-Fa Mao
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Xin Fan
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - De-Li Jiang
- School of Chemistry and Chemical Engineering of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Min Chen
- School of Chemistry and Chemical Engineering of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Lei Cui
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Kang Sun
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Sheng-Chun Dang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
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Devader C, Béraud-Dufour S, Coppola T, Mazella J. The anti-apoptotic role of neurotensin. Cells 2013; 2:124-35. [PMID: 24709648 PMCID: PMC3972661 DOI: 10.3390/cells2010124] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 02/15/2013] [Accepted: 02/26/2013] [Indexed: 01/07/2023] Open
Abstract
The neuropeptide, neurotensin, exerts numerous biological functions, including an efficient anti-apoptotic role, both in the central nervous system and in the periphery. This review summarizes studies that clearly evidenced the protective effect of neurotensin through its three known receptors. The pivotal involvement of the neurotensin receptor-3, also called sortilin, in the molecular mechanisms of the anti-apoptotic action of neurotensin has been analyzed in neuronal cell death, in cancer cell growth and in pancreatic beta cell protection. The relationships between the anti-apoptotic role of neurotensin and important physiological and pathological contexts are discussed in this review.
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Affiliation(s)
- Christelle Devader
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice-Sophia Antipolis, 660 route des Lucioles, Valbonne 06560, France.
| | - Sophie Béraud-Dufour
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice-Sophia Antipolis, 660 route des Lucioles, Valbonne 06560, France
| | - Thierry Coppola
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice-Sophia Antipolis, 660 route des Lucioles, Valbonne 06560, France.
| | - Jean Mazella
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice-Sophia Antipolis, 660 route des Lucioles, Valbonne 06560, France.
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Palacios DA, Miyake M, Rosser CJ. Radiosensitization in prostate cancer: mechanisms and targets. BMC Urol 2013; 13:4. [PMID: 23351141 PMCID: PMC3583813 DOI: 10.1186/1471-2490-13-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 12/05/2012] [Indexed: 01/05/2023] Open
Abstract
Prostate cancer is the second most commonly diagnosed cancer in American men over the age of 45 years and is the third most common cause of cancer related deaths in American men. In 2012 it is estimated that 241,740 men will be diagnosed with prostate cancer and 28,170 men will succumb to prostate cancer. Currently, radiation therapy is one of the most common definitive treatment options for localized prostate cancer. However, significant number of patients undergoing radiation therapy will develop locally persistent/recurrent tumours. The varying response rates to radiation may be due to 1) tumor microenvironment, 2) tumor stage/grade, 3) modality used to deliver radiation, and 4) dose of radiation. Higher doses of radiation has not always proved to be effective and have been associated with increased morbidity. Compounds designed to enhance the killing effects of radiation, radiosensitizers, have been extensively investigated over the past decade. The development of radiosensitizing agents could improve survival, improve quality of life and reduce costs, thus benefiting both patients and healthcare systems. Herin, we shall review the role and mechanisms of various agents that can sensitize tumours, specifically prostate cancer.
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Affiliation(s)
- Diego A Palacios
- Section of Urologic Oncology, MD Anderson Cancer Center Orlando, Orlando, FL 32806, USA
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Valerie NCK, Dziegielewska B, Hosing AS, Augustin E, Gray LS, Brautigan DL, Larner JM, Dziegielewski J. Inhibition of T-type calcium channels disrupts Akt signaling and promotes apoptosis in glioblastoma cells. Biochem Pharmacol 2013; 85:888-97. [PMID: 23287412 DOI: 10.1016/j.bcp.2012.12.017] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 12/18/2012] [Accepted: 12/20/2012] [Indexed: 01/29/2023]
Abstract
Glioblastoma multiforme (GBM) are brain tumors that are exceptionally resistant to both radio- and chemotherapy regimens and novel approaches to treatment are needed. T-type calcium channels are one type of low voltage-gated channel (LVCC) involved in embryonic cell proliferation and differentiation; however they are often over-expressed in tumors, including GBM. In this study, we found that inhibition of T-type Ca(2+) channels in GBM cells significantly reduced their survival and resistance to therapy. Moreover, either T-type selective antagonists, such as mibefradil, or siRNA-mediated knockdown of the T-type channel alpha subunits not only reduced cell viability and clonogenic potential, but also induced apoptosis. In response to channel blockade or ablation, we observed reduced phosphorylation of Akt and Rictor, suggesting inhibition of the mTORC2/Akt pathway. This was followed by reduction in phosphorylation of anti-apoptotic Bad and caspases activation. The apoptotic response was specific for T-type Ca(2+) channels, as inhibition of L-type Ca(2+) channels did not induce similar effects. Our results implicate T-type Ca(2+) channels as distinct entities for survival signaling in GBM cells and suggest that they are a novel molecular target for tumor therapy.
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Affiliation(s)
- Nicholas C K Valerie
- Department of Radiation Oncology, University of Virginia, Charlottesville, VA 22908, USA
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Wu Z, Martinez-Fong D, Trédaniel J, Forgez P. Neurotensin and its high affinity receptor 1 as a potential pharmacological target in cancer therapy. Front Endocrinol (Lausanne) 2012; 3:184. [PMID: 23335914 PMCID: PMC3547287 DOI: 10.3389/fendo.2012.00184] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 12/26/2012] [Indexed: 12/12/2022] Open
Abstract
Cancer is a worldwide health problem. Personalized treatment represents a future advancement for cancer treatment, in part due to the development of targeted therapeutic drugs. These molecules are expected to be more effective than current treatments and less harmful to normal cells. The discovery and validation of new targets are the foundation and the source of these new therapies. The neurotensinergic system has been shown to enhance cancer progression in various cancers such as pancreatic, prostate, lung, breast, and colon cancer. It also triggers multiple oncogenic signaling pathways, such as the PKC/ERK and AKT pathways. In this review, we discuss the contribution of the neurotensinergic system to cancer progression, as well as the regulation and mechanisms of the system in order to highlight its potential as a therapeutic target, and its prospect for its use as a treatment in certain cancers.
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Affiliation(s)
- Zherui Wu
- INSERM-UPMC UMR_S938, Hôpital Saint-AntoineParis, France
| | - Daniel Martinez-Fong
- Departamento de Fisiologïa, Biofïsica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMexico City, Mexico
| | - Jean Trédaniel
- INSERM-UPMC UMR_S938, Hôpital Saint-AntoineParis, France
- Unité de Cancérologie Thoracique, Groupe Hospitalier Paris Saint-Joseph/Université Paris DescartesParis, France
| | - Patricia Forgez
- INSERM-UPMC UMR_S938, Hôpital Saint-AntoineParis, France
- *Correspondence: Patricia Forgez, INSERM-UPMC UMR_S938, Hôpital Saint-Antoine, Bâtiment Raoul Kourilsky, 184 rue du Faubourg St-Antoine, 75571 Paris Cedex 12, France. e-mail:
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