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Wang H, Huo R, He K, Cheng L, Zhang S, Yu M, Zhao W, Li H, Xue J. Perineural invasion in colorectal cancer: mechanisms of action and clinical relevance. Cell Oncol (Dordr) 2024; 47:1-17. [PMID: 37610689 PMCID: PMC10899381 DOI: 10.1007/s13402-023-00857-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2023] [Indexed: 08/24/2023] Open
Abstract
BACKGROUND In recent years, the significance of the nervous system in the tumor microenvironment has gained increasing attention. The bidirectional communication between nerves and cancer cells plays a critical role in tumor initiation and progression. Perineural invasion (PNI) occurs when tumor cells invade the nerve sheath and/or encircle more than 33% of the nerve circumference. PNI is a common feature in various malignancies and is associated with tumor invasion, metastasis, cancer-related pain, and unfavorable clinical outcomes. The colon and rectum are highly innervated organs, and accumulating studies support PNI as a histopathologic feature of colorectal cancer (CRC). Therefore, it is essential to investigate the role of nerves in CRC and comprehend the mechanisms of PNI to impede tumor progression and improve patient survival. CONCLUSION This review elucidates the clinical significance of PNI, summarizes the underlying cellular and molecular mechanisms, introduces various experimental models suitable for studying PNI, and discusses the therapeutic potential of targeting this phenomenon. By delving into the intricate interactions between nerves and tumor cells, we hope this review can provide valuable insights for the future development of CRC treatments.
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Affiliation(s)
- Hao Wang
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China
| | - Ruixue Huo
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China
| | - Kexin He
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China
| | - Li Cheng
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China
| | - Shan Zhang
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Cancer Institute, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Minhao Yu
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200217, P.R. China
| | - Wei Zhao
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
| | - Hui Li
- State Key Laboratory of Oncogenes and Related Genes, Ren Ji Hospital, School of Medicine, Shanghai Cancer Institute, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China.
| | - Junli Xue
- Department of Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, P.R. China.
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2
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Baghaie L, Haxho F, Leroy F, Lewis B, Wawer A, Minhas S, Harless WW, Szewczuk MR. Contemporaneous Perioperative Inflammatory and Angiogenic Cytokine Profiles of Surgical Breast, Colorectal, and Prostate Cancer Patients: Clinical Implications. Cells 2023; 12:2767. [PMID: 38067195 PMCID: PMC10706122 DOI: 10.3390/cells12232767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/29/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
Surgery-induced tumor growth acceleration and synchronous metastatic growth promotion have been observed for decades. Surgery-induced wound healing, orchestrated through growth factors, chemokines, and cytokines, can negatively impact patients harboring residual or metastatic disease. We provide detailed clinical evidence of this process in surgical breast, prostate, and colorectal cancer patients. Plasma samples were analyzed from 68 cancer patients who had not received treatment before surgery or adjuvant therapy until at least four weeks post-surgery. The levels of plasma cytokines, chemokines, and growth factors were simultaneously quantified and profiled using multiplexed immunoassays for eight time points sampled per patient. The immunologic processes are induced immediately after surgery in patients, characterized by a drastic short-term shift in the expression levels of pro-inflammatory and angiogenic molecules and cytokines. A rapid and significant spike in circulating plasma levels of hepatocyte growth factor (HGF), interleukin-6 (IL-6), placental growth factor (PLGF), and matrix metalloproteinase-9 (MMP-9) after surgery was noted. The rise in these molecules was concomitant with a significant drop in transforming growth factor-β1 (TGF-β1), platelet-derived growth factor (PDGF-AB/BB), insulin-like growth factor-1 (IGF-1), and monocyte chemoattractant protein-2 (MCP-2). If not earlier, each plasma analyte was normalized to baseline levels within 1-2 weeks after surgery, suggesting that surgical intervention alone was responsible for these effects. The effects of surgical tumor removal on disrupting the pro-inflammatory and angiogenic plasma profiles of cancer patients provide evidence for potentiating malignant progression. Our findings indicate a narrow therapeutic window of opportunity after surgery to prevent disease recurrence.
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Affiliation(s)
- Leili Baghaie
- Department of Biomedical & Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada; (L.B.); (F.H.); (F.L.)
| | - Fiona Haxho
- Department of Biomedical & Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada; (L.B.); (F.H.); (F.L.)
- Dermatology Residency Program, the Cumming School of Medicine, University of Calgary, Calgary, AB T2T 5C7, Canada
| | - Fleur Leroy
- Department of Biomedical & Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada; (L.B.); (F.H.); (F.L.)
- Faculté de Médecine, Maïeutique et Sciences de la Santé, Université de Strasbourg, F-67000 Strasbourg, France
| | - Beth Lewis
- ENCYT Technologies Inc., Membertou, NS B1S 0H1, Canada; (B.L.); (A.W.); (S.M.)
| | - Alexander Wawer
- ENCYT Technologies Inc., Membertou, NS B1S 0H1, Canada; (B.L.); (A.W.); (S.M.)
| | - Shamano Minhas
- ENCYT Technologies Inc., Membertou, NS B1S 0H1, Canada; (B.L.); (A.W.); (S.M.)
| | - William W. Harless
- ENCYT Technologies Inc., Membertou, NS B1S 0H1, Canada; (B.L.); (A.W.); (S.M.)
| | - Myron R. Szewczuk
- Department of Biomedical & Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada; (L.B.); (F.H.); (F.L.)
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3
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Hu J, Wu Y, Dong X, Zeng Y, Wang Y. The Diagnostic and Prognostic Value of Neurotransmitter Receptor-Related Genes in Colon Adenocarcinoma. Mol Biotechnol 2023:10.1007/s12033-023-00910-z. [PMID: 37833465 DOI: 10.1007/s12033-023-00910-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 09/18/2023] [Indexed: 10/15/2023]
Abstract
Colorectal cancer (CRC) is a malignant tumor with high morbidity and mortality in the world. This study aimed to find receptor-related genes (NRGs) with diagnostic and prognostic value in colon adenocarcinoma (COAD). The Cancer Genome Atlas (TCGA) and the Human Protein Atlas database databases were applied to find differential expression NRGs between COAD and normal colonic tissues. Subsequently, Cox regression analysis and minimum absolute contraction and selection operator algorithm were used to construct a prognosis nomogram based on TCGA and Gene Expression Omnibus databases. Expression levels of 35 NRGs were significant differences in COAD and normal colonic tissues. ROC curves showed that 24 NRGs had high diagnostic accuracy (AUC > 0.850) in COAD. Risk score was constructed based on 10 NRGs for the first time. Cox regression analysis revealed risk score was an independent risk factor and a higher risk score predicts a later TNM stage. Finally, a prognostic nomogram containing risk score and clinical features was established. Calibration curves and C-index suggested the powerful predictable value of the model. This study identified the NRGs with diagnostic value and prognostic value, providing a direction for treatment of COAD patients.
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Affiliation(s)
- Jia Hu
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
- Research Center of Digestive Disease, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Yun Wu
- National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Science, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Xiaoping Dong
- National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Science, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Yong Zeng
- National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Science, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Yongjun Wang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China.
- Research Center of Digestive Disease, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China.
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4
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Debel W, Ramadhan A, Vanpeteghem C, Forsyth RG. Does the Choice of Anaesthesia Affect Cancer? A Molecular Crosstalk between Theory and Practice. Cancers (Basel) 2022; 15:cancers15010209. [PMID: 36612205 PMCID: PMC9818147 DOI: 10.3390/cancers15010209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 01/01/2023] Open
Abstract
In recent years, there has been an increasing scientific interest in the interaction between anaesthesia and cancer development. Retrospective studies show that the choice of anaesthetics may influence cancer outcome and cancer recurrence; however, these studies show contradictory results. Recently, some large randomized clinical trials have been completed, yet they show no significant effect of anaesthetics on cancer outcomes. In this scoping review, we compiled a body of in vivo and in vitro studies with the goal of evaluating the biological effects of anaesthetics on cancer cells in comparison to clinical effects as described in recent studies. It was found that sevoflurane, propofol, opioids and lidocaine are likely to display direct biological effects on cancer cells; however, significant effects are only found in studies with exposure to high concentrations of anaesthetics and/or during longer exposure times. When compared to clinical data, these differences in exposure and dose-effect relation, as well as tissue selectivity, population selection and unclear anaesthetic dosing protocols might explain the lack of outcome.
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Affiliation(s)
- Wiebrecht Debel
- Department of Anesthesiology, University Hospital Ghent, 9000 Ghent, Belgium
| | - Ali Ramadhan
- Department of Pathological Anatomy, Universitair Ziekenhuis Brussel, 1090 Brussels, Belgium
| | | | - Ramses G. Forsyth
- Department of Pathological Anatomy, Universitair Ziekenhuis Brussel, 1090 Brussels, Belgium
- Laboratorium for Experimental Pathology (EXPA), Vrije Universiteit Brussel, 1090 Brussels, Belgium
- Correspondence: ; Tel.: +32-(2)-4775084
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5
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Xian X, Zhang Y, Bai A, Zhai X, Hu H, Zhang J, Ye M. Association between Family Support, Stress, and Sleep Quality among College Students during the COVID-19 Online Learning Period. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 20:248. [PMID: 36612570 PMCID: PMC9819990 DOI: 10.3390/ijerph20010248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
(1) Background: During the past 3 years, the COVID-19 pandemic has severely affected the normal school schedule of college students, jeopardizing their mental health, sleep quality, and interpersonal relationships. However, previous studies have focused on the dimension of social support received, and few studies have measured in depth the association of support received from family on adolescents’ physical and mental health. Therefore, this study explored the associations between family support received by Chinese college students during COVID-19 pandemic online classes, stress and sleep quality, and the mediating role of stress. (2) Methods: A cross-sectional study conducted at Chongqing Medical University recruited 712 college students through a university-wide incidental random sample using the Questionnaire Star platform. Statistical description and correlation analysis was conducted using SPSS 25.0, and structural equation modeling was constructed using AMOS 22.0 to test for mediating effects; (3) Results: The family support score of college students during the COVID-19 pandemic online course was 19.41 ± 4.62. Correlation analysis showed that sleep quality was negatively correlated with family support (r = −0.224, p < 0.01), positively correlated with stress (r = 0.324, p < 0.01), and family support was negatively correlated with stress (r = −0.159, p < 0.01). The results of structural equation modeling showed that stress partially mediated the relationship between family support and sleep quality among college students (indirect effect = −0.150, p < 0.01, SE = 0.013,95% CI = [−0.208, −0.064]). The model R2 was 36.4%. (4) Conclusions: Schools should consider implementing sleep education, and stress relief curriculum measures to improve the quality of students’ sleep, and should focus on the role that family plays during online classes. This will help students overcome the negative emotional effects of stress in the COVID-19 pandemic and improve their learning efficiency and physical and mental health.
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Bezu L, Wu Chuang A, Sauvat A, Humeau J, Xie W, Cerrato G, Liu P, Zhao L, Zhang S, Le Naour J, Pol J, van Endert P, Kepp O, Barlesi F, Kroemer G. Local anesthetics elicit immune-dependent anticancer effects. J Immunother Cancer 2022; 10:jitc-2021-004151. [PMID: 35483744 PMCID: PMC9052055 DOI: 10.1136/jitc-2021-004151] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2022] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Retrospective clinical trials reported a reduced local relapse rate, as well as improved overall survival after injection of local anesthetics during cancer surgery. Here, we investigated the anticancer effects of six local anesthetics used in clinical practice. RESULTS In vitro, local anesthetics induced signs of cancer cell stress including inhibition of oxidative phosphorylation, and induction of autophagy as well as endoplasmic reticulum (ER) stress characterized by the splicing of X-box binding protein 1 (XBP1s) mRNA, cleavage of activating transcription factor 6 (ATF6), phosphorylation of eIF2α and subsequent upregulation of activating transcription factor 4 (ATF4). Both eIF2α phosphorylation and autophagy required the ER stress-relevant eukaryotic translation initiation factor 2 alpha kinase 3 (EIF2AK3, best known as PERK). Local anesthetics also activated two hallmarks of immunogenic cell death, namely, the release of ATP and high-mobility group box 1 protein (HMGB1), yet failed to cause the translocation of calreticulin (CALR) from the ER to the plasma membrane. In vivo, locally injected anesthetics decreased tumor growth and improved survival in several models of tumors established in immunocompetent mice. Systemic immunotherapy with PD-1 blockade or intratumoral injection of recombinant CALR protein, increased the antitumor effects of local anesthetics. Local anesthetics failed to induce antitumor effects in immunodeficient mice or against cancers unable to activate ER stress or autophagy due to the knockout of EIF2AK3/PERK or ATG5, respectively. Uncoupling agents that inhibit oxidative phosphorylation and induce autophagy and ER stress mimicked the immune-dependent antitumor effects of local anesthetics. CONCLUSION Altogether, these results indicate that local anesthetics induce a therapeutically relevant pattern of immunogenic stress responses in cancer cells.
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Affiliation(s)
- Lucillia Bezu
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France .,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Anesthesiology Department, Gustave Roussy Cancer Campus, Villejuif, France
| | - Alejandra Wu Chuang
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Allan Sauvat
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Juliette Humeau
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Québec, Canada.,Department of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Wei Xie
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Giulia Cerrato
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Peng Liu
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Liwei Zhao
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Shuai Zhang
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Julie Le Naour
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Jonathan Pol
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Peter van Endert
- Institut National de la Santé et de la Recherche Médicale, Unité 1151, Université de Paris Cité, Centre National de la Recherche Scientifique, UMR 8253, Paris, France
| | - Oliver Kepp
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Fabrice Barlesi
- Gustave Roussy, Villejuif, France.,Aix Marseille University, INSERM, CNRS, CRCM, Marseille, France
| | - Guido Kroemer
- Equipe labellisée par la Ligue contre le cancer, Université de Paris Cité, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France .,Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France.,Pôle de Biologie, Hôpital européen Georges Pompidou, AP-HP, Paris, France
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7
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Zhang L, Yang L, Jiang S, Yu M. Nerve Dependence in Colorectal Cancer. Front Cell Dev Biol 2022; 10:766653. [PMID: 35223829 PMCID: PMC8866866 DOI: 10.3389/fcell.2022.766653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 01/13/2022] [Indexed: 12/28/2022] Open
Abstract
Cancerous invasion of nerves has been reported in a list of malignant tumors as a high-risk pathological feature and marker of poor disease outcome especially in neurotrophic cancers (such as in pancreas and prostate), indicating that although once neglected, nerves could have played a pivotal role in tumorigenesis and cancer progression. In colorectal cancer, perineural invasion, a specific form of tumor-nerve interaction referring to the identification of tumor cells in proximity to the nerve, has been recognized as a strong and independent prognosis predictor; denervation of autonomic nerves and enteric nerves have shown that the existence of these nerves in the gut are accompanied by promoted cancer proliferation, further supporting that nerve is a potential accomplice to shield and nurture tumor cells. However, the precise role of nerve in CRC and the pattern of interaction between CRC cells and nerve has not been unveiled yet. Here we aim to review some basic knowledge of the importance of nerves in CRC and attempt to depict a mechanistic view of tumor-nerve interaction during CRC development.
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Affiliation(s)
- Lincheng Zhang
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ludi Yang
- Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuheng Jiang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Minhao Yu, ; Shuheng Jiang,
| | - Minhao Yu
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Minhao Yu, ; Shuheng Jiang,
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8
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Eckerling A, Ricon-Becker I, Sorski L, Sandbank E, Ben-Eliyahu S. Stress and cancer: mechanisms, significance and future directions. Nat Rev Cancer 2021; 21:767-785. [PMID: 34508247 DOI: 10.1038/s41568-021-00395-5] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/23/2021] [Indexed: 02/08/2023]
Abstract
The notion that stress and cancer are interlinked has dominated lay discourse for decades. More recent animal studies indicate that stress can substantially facilitate cancer progression through modulating most hallmarks of cancer, and molecular and systemic mechanisms mediating these effects have been elucidated. However, available clinical evidence for such deleterious effects is inconsistent, as epidemiological and stress-reducing clinical interventions have yielded mixed effects on cancer mortality. In this Review, we describe and discuss specific mediating mechanisms identified by preclinical research, and parallel clinical findings. We explain the discrepancy between preclinical and clinical outcomes, through pointing to experimental strengths leveraged by animal studies and through discussing methodological and conceptual obstacles that prevent clinical studies from reflecting the impacts of stress. We suggest approaches to circumvent such obstacles, based on targeting critical phases of cancer progression that are more likely to be stress-sensitive; pharmacologically limiting adrenergic-inflammatory responses triggered by medical procedures; and focusing on more vulnerable populations, employing personalized pharmacological and psychosocial approaches. Recent clinical trials support our hypothesis that psychological and/or pharmacological inhibition of excess adrenergic and/or inflammatory stress signalling, especially alongside cancer treatments, could save lives.
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Affiliation(s)
- Anabel Eckerling
- Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Itay Ricon-Becker
- Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Liat Sorski
- Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Elad Sandbank
- Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Shamgar Ben-Eliyahu
- Sagol School of Neuroscience and School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel.
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9
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The Adrenergic Nerve Network in Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1329:271-294. [PMID: 34664245 DOI: 10.1007/978-3-030-73119-9_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
The central and autonomic nervous systems interact and converge to build up an adrenergic nerve network capable of promoting cancer. While a local adrenergic sympathetic innervation in peripheral solid tumors influences cancer and stromal cell behavior, the brain can participate to the development of cancer through an intermixed dysregulation of the sympathoadrenal system, adrenergic neurons, and the hypothalamo-pituitary-adrenal axis. A deeper understanding of the adrenergic nerve circuitry within the brain and tumors and its interactions with the microenvironment should enable elucidation of original mechanisms of cancer and novel therapeutic strategies.
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10
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Zhang YL, Pei LJ, Sun C, Zhao MY, Che L, Huang YG. Regional anesthesia and cancer recurrence in patients with late-stage cancer: a systematic review and meta-analysis. Chin Med J (Engl) 2021; 134:2403-2411. [PMID: 34608071 PMCID: PMC8654444 DOI: 10.1097/cm9.0000000000001676] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Whether regional anesthesia may help to prevent disease recurrence in cancer patients is still controversial. The stage of cancer at the time of diagnosis is a key factor that defines prognosis and is one of the most important sources of heterogeneity for the treatment effect. We sought to update existing systematic reviews and clarify the effect of regional anesthesia on cancer recurrence in late-stage cancer patients. METHODS Medline, Embase, and Cochrane Library were searched from inception to September 2020 to identify randomized controlled trials (RCTs) and cohort studies that assessed the effect of regional anesthesia on cancer recurrence and overall survival (OS) compared with general anesthesia. Late-stage cancer patients were primarily assessed according to the American Joint Committee on Cancer Cancer Staging Manual (eighth edition), and the combined hazard ratio (HR) from random-effects models was used to evaluate the effect of regional anesthesia. RESULTS A total of three RCTs and 34 cohort studies (including 64,691 patients) were identified through the literature search for inclusion in the analysis. The risk of bias was low in the RCTs and was moderate in the observational studies. The pooled HR for recurrence-free survival (RFS) or OS did not favor regional anesthesia when data from RCTs in patients with late-stage cancer were combined (RFS, HR = 1.12, 95% confidence interval [CI]: 0.58-2.18, P = 0.729, I2 = 76%; OS, HR = 0.86, 95% CI: 0.63-1.18, P = 0.345, I2 = 48%). Findings from observational studies showed that regional anesthesia may help to prevent disease recurrence (HR = 0.87, 95% CI: 0.78-0.96, P = 0.008, I2 = 71%) and improve OS (HR = 0.88, 95% CI: 0.79-0.98, P = 0.022, I2 = 79%). CONCLUSIONS RCTs reveal that OS and RFS were similar between regional and general anesthesia in late-stage cancers. The selection of anesthetic methods should still be based on clinical evaluation, and changes to current practice need more support from large, well-powered, and well-designed studies.
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Affiliation(s)
- Yue-Lun Zhang
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Li-Jian Pei
- Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Chen Sun
- Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Meng-Yun Zhao
- Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Lu Che
- Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yu-Guang Huang
- Department of Anesthesiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Fiala O, Ostašov P, Rozsypalová A, Hora M, Šorejs O, Šustr J, Bendová B, Trávníček I, Filipovský J, Fínek J, Büchler T. Impact of Concomitant Cardiovascular Medication on Survival of Metastatic Renal Cell Carcinoma Patients Treated with Sunitinib or Pazopanib in the First Line. Target Oncol 2021; 16:643-652. [PMID: 34363554 DOI: 10.1007/s11523-021-00829-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Patients with metastatic renal cell carcinoma (mRCC) are often elderly and have various comorbidities, including cardiovascular diseases. Although these patients have extensive co-exposure to targeted therapy and cardiovascular drugs, the impact of this co-exposure on outcomes for patients with mRCC remains unclear. OBJECTIVE Our objective was to evaluate the association between the use of cardiovascular medication and survival of patients with mRCC. METHODS The study included 343 consecutive patients with mRCC treated with sunitinib or pazopanib in the first line. Clinical data obtained from the Renal Cell Carcinoma Information System (RENIS) clinical registry and hospital information systems were retrospectively analyzed. Progression-free survival (PFS) and overall survival (OS) were compared according to the use of common medications, including antihypertensives (i.e., β-blockers [BBs], angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers, calcium channel blockers, and diuretics), acetylsalicylic acid (aspirin), statins, and proton pump inhibitors. RESULTS The univariate Cox analysis evaluating the impact of the assessed comedications on patient survival revealed that only BBs were significantly associated with PFS (hazard ratio [HR] 0.533, p < 0.001) and OS (HR 0.641, p = 0.006). The median PFS and OS for users of BBs was 18.39 and 37.60 months versus 8.16 and 20.4 months for patients not using BBs (p < 0.001 and p < 0.001, respectively). The Cox multivariate analysis showed that the use of BBs was a significant factor for both PFS (HR 0.428, p = 0.001) and OS (HR 0.518, p = 0.001). CONCLUSIONS The results of this retrospective study suggest that the use of BBs is associated with favorable outcomes for patients with mRCC treated with sunitinib or pazopanib in the first line.
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Affiliation(s)
- Ondřej Fiala
- Department of Oncology and Radiotherapy, Faculty of Medicine and University Hospital in Pilsen, Charles University, alej Svobody 80, 304 60, Pilsen, Czech Republic.
- Laboratory of Cancer Treatment and Tissue Regeneration, Faculty of Medicine in Pilsen, Biomedical Center, Charles University, alej Svobody 76, Pilsen, Czech Republic.
| | - Pavel Ostašov
- Laboratory of Tumor Biology and Immunotherapy, Faculty of Medicine in Pilsen, Biomedical Center, Charles University, alej Svobody 76, Pilsen, Czech Republic
| | - Aneta Rozsypalová
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer Hospital, Videnska 800, Prague, Czech Republic
| | - Milan Hora
- Department of Urology, Faculty of Medicine and University Hospital in Pilsen, Charles University, E. Beneše 13, Pilsen, Czech Republic
| | - Ondřej Šorejs
- Department of Oncology and Radiotherapy, Faculty of Medicine and University Hospital in Pilsen, Charles University, alej Svobody 80, 304 60, Pilsen, Czech Republic
- Laboratory of Cancer Treatment and Tissue Regeneration, Faculty of Medicine in Pilsen, Biomedical Center, Charles University, alej Svobody 76, Pilsen, Czech Republic
| | - Jan Šustr
- Department of Oncology and Radiotherapy, Faculty of Medicine and University Hospital in Pilsen, Charles University, alej Svobody 80, 304 60, Pilsen, Czech Republic
| | - Barbora Bendová
- Department of Urology, Faculty of Medicine and University Hospital in Pilsen, Charles University, E. Beneše 13, Pilsen, Czech Republic
| | - Ivan Trávníček
- Department of Urology, Faculty of Medicine and University Hospital in Pilsen, Charles University, E. Beneše 13, Pilsen, Czech Republic
| | - Jan Filipovský
- 2nd Department of Internal Medicine, Faculty of Medicine and University Hospital in Pilsen, Charles University, E. Beneše 13, Pilsen, Czech Republic
| | - Jindřich Fínek
- Department of Oncology and Radiotherapy, Faculty of Medicine and University Hospital in Pilsen, Charles University, alej Svobody 80, 304 60, Pilsen, Czech Republic
| | - Tomáš Büchler
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer Hospital, Videnska 800, Prague, Czech Republic
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Anti-Angiogenic Therapy: Current Challenges and Future Perspectives. Int J Mol Sci 2021; 22:ijms22073765. [PMID: 33916438 PMCID: PMC8038573 DOI: 10.3390/ijms22073765] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 02/07/2023] Open
Abstract
Anti-angiogenic therapy is an old method to fight cancer that aims to abolish the nutrient and oxygen supply to the tumor cells through the decrease of the vascular network and the avoidance of new blood vessels formation. Most of the anti-angiogenic agents approved for cancer treatment rely on targeting vascular endothelial growth factor (VEGF) actions, as VEGF signaling is considered the main angiogenesis promotor. In addition to the control of angiogenesis, these drugs can potentiate immune therapy as VEGF also exhibits immunosuppressive functions. Despite the mechanistic rational that strongly supports the benefit of drugs to stop cancer progression, they revealed to be insufficient in most cases. We hypothesize that the rehabilitation of old drugs that interfere with mechanisms of angiogenesis related to tumor microenvironment might represent a promising strategy. In this review, we deepened research on the molecular mechanisms underlying anti-angiogenic strategies and their failure and went further into the alternative mechanisms that impact angiogenesis. We concluded that the combinatory targeting of alternative effectors of angiogenic pathways might be a putative solution for anti-angiogenic therapies.
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13
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The role of ADRB2 gene polymorphisms in malignancies. Mol Biol Rep 2021; 48:2741-2749. [PMID: 33675465 DOI: 10.1007/s11033-021-06250-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/24/2021] [Indexed: 12/30/2022]
Abstract
Beta-2-adrenergic receptor is a member of the G protein-coupled receptor superfamily, which is highly expressed in most malignancies. There is increasing evidence showing that beta-2-adrenergic receptors are associated with carcinogenesis, proliferation, immune regulation, invasion, angiogenesis, clinical prognosis and treatment resistance in malignancies. Polymorphisms of the ADRB2 gene have been confirmed to be associated with transcriptional activity, mRNA translation, and beta-2-adrenergic receptor expression and sensitivity. This review discusses clinically relevant examples of single nucleotide polymorphisms of ADRB2 in malignancies and the effects of these polymorphisms on cancer susceptibility, prognosis and treatment response of cancer patients.
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Iftikhar A, Islam M, Shepherd S, Jones S, Ellis I. Cancer and Stress: Does It Make a Difference to the Patient When These Two Challenges Collide? Cancers (Basel) 2021; 13:cancers13020163. [PMID: 33418900 PMCID: PMC7825104 DOI: 10.3390/cancers13020163] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Head and neck cancers are the sixth most common cancer in the world. The burden of the disease has remained challenging over recent years despite the advances in treatments of other malignancies. The very use of the word malignancy brings about a stress response in almost all adult patients. Being told you have a tumour is not a word anyone wants to hear. We have embarked on a study which will investigate the effect of stress pathways on head and neck cancer patients and which signalling pathways may be involved. In the future, this will allow clinicians to better manage patients with head and neck cancer and reduce the patients’ stress so that this does not add to their tumour burden. Abstract A single head and neck Cancer (HNC) is a globally growing challenge associated with significant morbidity and mortality. The diagnosis itself can affect the patients profoundly let alone the complex and disfiguring treatment. The highly important functions of structures of the head and neck such as mastication, speech, aesthetics, identity and social interactions make a cancer diagnosis in this region even more psychologically traumatic. The emotional distress engendered as a result of functional and social disruption is certain to negatively affect health-related quality of life (HRQoL). The key biological responses to stressful events are moderated through the combined action of two systems, the hypothalamus–pituitary–adrenal axis (HPA) which releases glucocorticoids and the sympathetic nervous system (SNS) which releases catecholamines. In acute stress, these hormones help the body to regain homeostasis; however, in chronic stress their increased levels and activation of their receptors may aid in the progression of cancer. Despite ample evidence on the existence of stress in patients diagnosed with HNC, studies looking at the effect of stress on the progression of disease are scarce, compared to other cancers. This review summarises the challenges associated with HNC that make it stressful and describes how stress signalling aids in the progression of cancer. Growing evidence on the relationship between stress and HNC makes it paramount to focus future research towards a better understanding of stress and its effect on head and neck cancer.
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Hutchings C, Phillips JA, Djamgoz MBA. Nerve input to tumours: Pathophysiological consequences of a dynamic relationship. Biochim Biophys Acta Rev Cancer 2020; 1874:188411. [PMID: 32828885 DOI: 10.1016/j.bbcan.2020.188411] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 12/13/2022]
Abstract
It is well known that tumours arising in different organs are innervated and that 'perineural invasion' (cancer cells escaping from the tumour by following the nerve trunk) is a negative prognostic factor. More surprisingly, increasing evidence suggests that the nerves can provide active inputs to tumours and there is two-way communication between nerves and cancer cells within the tumour microenvironment. Cells of the immune system also interact with the nerves and cancer cells. Thus, the nerve connections can exert significant control over cancer progression and modulating these (physically or chemically) can affect significantly the cancer process. Nerve inputs to tumours are derived mainly from the sympathetic (adrenergic) and the parasympathetic (cholinergic) systems, which are interactive. An important component of the latter is the vagus nerve, the largest of the cranial nerves. Here, we present a two-part review of the nerve inputs to tumours and their effects on tumorigenesis. First, we review briefly some relevant general issues including ultrastructural aspects, stemness, interactions between neurones and primary tumours, and communication between neurones and metastasizing tumour cells. Ultrastructural characteristics include synaptic vesicles, tumour microtubes and gap junctions enabling formation of cellular networks. Second, we evaluate the pathophysiology of the nerve input to five major carcinomas: cancers of prostate, stomach, colon, lung and pancreas. For each cancer, we present (i) the nerve inputs normally present in the cancer organ and (ii) how these interact and influence the cancer process. The best clinical evidence for the role of nerves in promoting tumorigenesis comes from prostate cancer patients where metastatic progression has been shown to be suppressed significantly in cases of spinal cord injury. The balance of the sympathetic and parasympathetic contributions to early versus late tumorigenesis varies amongst the different cancers. Different branches of the vagus provide functional inputs to several of the carcinomas and, in two-way interaction with the sympathetic nervous system, affect different stages of the cancer process. Overall, the impact of the vagus nerve can be 'direct' or 'indirect'. Directly, the effect of the vagus is primarily to promote tumorigenesis and this is mediated through cholinergic receptor mechanisms. Indirectly, pro- and anti-tumour effects can occur by stimulation or inhibition of the sympathetic nervous system, respectively. Less well understood are the 'indirect' anti-tumour effect of the vagus nerve via immunomodulation/inflammation, and the role of sensory innervation. A frequent occurrence in the nerve-tumour interactions is the presence of positive feedback driven by agents like nerve growth factor. We conclude that the nerve inputs to tumours can actively and dynamically impact upon cancer progression and are open to clinical exploitation.
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Affiliation(s)
- Charlotte Hutchings
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, South Kensington Campus, London SW7 2AZ, UK
| | - Jade A Phillips
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, South Kensington Campus, London SW7 2AZ, UK
| | - Mustafa B A Djamgoz
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, South Kensington Campus, London SW7 2AZ, UK; Biotechnology Research Centre, Cyprus International University, Haspolat, Nicosia, TRNC, Mersin 10, Turkey.
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Alves JQ, Pernomian L, Silva CD, Gomes MS, de Oliveira AM, da Silva RS. Vascular tone and angiogenesis modulation by catecholamine coordinated to ruthenium. RSC Med Chem 2020; 11:497-510. [PMID: 33479651 DOI: 10.1039/c9md00573k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/12/2020] [Indexed: 01/11/2023] Open
Abstract
Catecholamines participate in angiogenesis, an important tumor development process. However, the way catecholamines interact with their receptors has not been completely elucidated, and doubts still remain as to whether these interactions occur between catechol and/or amine sites and particular amino acid residues on the catecholamine receptors. To evaluate how catechol and amine groups contribute to angiogenesis, we immobilized the catechol site through ruthenium ion (Ru) coordination, to obtain species with the general formula [Ru(NH3)4(catecholamine-R)]Cl. We then assessed the angiogenic activity of the complexes in a chorioallantoic membrane model (CAM) and examined vascular reactivity and calcium mobilization in rat aortas and vascular cells. [Ru(NH3)4(catecholamine-R)]Cl acted as partial agonists and/or antagonists of their respective receptors and induced calcium mobilization. [Ru(NH3)4(isoproterenol)]+ [Ru(NH3)4(noradrenaline)]+, and [Ru(NH3)4(adrenaline)]+ behaved as antiangiogenic complexes, whereas [Ru(NH3)4(dopamine)]+ proved to be a proangiogenic complex. In conclusion, catecholamines and [Ru(NH3)4(catecholamine-R)]Cl can modulate angiogenesis, and catechol group availability can modify the way these complexes impact the vascular tone, suggesting that catecholamines and their receptors interact differently after catecholamine coordination to ruthenium.
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Affiliation(s)
- Jacqueline Querino Alves
- Faculty of Philosophy , Sciences and Letters of Ribeirão Preto - University of São Paulo (USP) , Department of Chemistry , Avenida Bandeirantes, 3900 , postal code 14.040-901 , Ribeirão Preto , São Paulo , Brazil
| | - Laena Pernomian
- Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP) - University of São Paulo (USP) , Department of Physics and Chemistry , Avenida do Café, s/n , postal code 14.040-903 , Ribeirão Preto , São Paulo , Brazil .
| | - Cássia Dias Silva
- Faculty of Philosophy , Sciences and Letters of Ribeirão Preto - University of São Paulo (USP) , Department of Chemistry , Avenida Bandeirantes, 3900 , postal code 14.040-901 , Ribeirão Preto , São Paulo , Brazil
| | - Mayara Santos Gomes
- Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP) - University of São Paulo (USP) , Department of Physics and Chemistry , Avenida do Café, s/n , postal code 14.040-903 , Ribeirão Preto , São Paulo , Brazil .
| | - Ana Maria de Oliveira
- Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP) - University of São Paulo (USP) , Department of Physics and Chemistry , Avenida do Café, s/n , postal code 14.040-903 , Ribeirão Preto , São Paulo , Brazil .
| | - Roberto Santana da Silva
- Faculty of Philosophy , Sciences and Letters of Ribeirão Preto - University of São Paulo (USP) , Department of Chemistry , Avenida Bandeirantes, 3900 , postal code 14.040-901 , Ribeirão Preto , São Paulo , Brazil.,Faculty of Pharmaceutical Sciences of Ribeirão Preto (FCFRP) - University of São Paulo (USP) , Department of Physics and Chemistry , Avenida do Café, s/n , postal code 14.040-903 , Ribeirão Preto , São Paulo , Brazil .
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Spotlight on ROS and β3-Adrenoreceptors Fighting in Cancer Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6346529. [PMID: 31934266 PMCID: PMC6942895 DOI: 10.1155/2019/6346529] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023]
Abstract
The role of ROS and RNS is a long-standing debate in cancer. Increasing the concentration of ROS reaching the toxic threshold can be an effective strategy for the reduction of tumor cell viability. On the other hand, cancer cells, by maintaining intracellular ROS concentration at an intermediate level called “mild oxidative stress,” promote the activation of signaling that favors tumor progression by increasing cell viability and dangerous tumor phenotype. Many chemotherapeutic treatments induce cell death by rising intracellular ROS concentration. The persistent drug stimulation leads tumor cells to simulate a process called hormesis by which cancer cells exhibit a biphasic response to exposure to drugs used. After a first strong response to a low dose of chemotherapeutic agent, cancer cells start to decrease the response even if high doses of drugs were used. In this framework, β3-adrenoreceptors (β3-ARs) fit with an emerging antioxidant role in cancer. β3-ARs are involved in tumor proliferation, angiogenesis, metastasis, and immune tolerance. Its inhibition, by the selective β3-ARs antagonist (SR59230A), leads cancer cells to increase ROS concentration thus inducing cell death and to decrease NO levels thus inhibiting angiogenesis. In this review, we report an overview on reactive oxygen biology in cancer cells focusing on β3-ARs as new players in the antioxidant pathway.
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18
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Lusty AJ, Hosier GW, Koti M, Chenard S, Mizubuti GB, Jaeger M, Siemens DR. Anesthetic technique and oncological outcomes in urology: A clinical practice review. Urol Oncol 2019; 37:845-852. [DOI: 10.1016/j.urolonc.2019.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/21/2019] [Accepted: 08/12/2019] [Indexed: 12/18/2022]
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Fiala O, Ostasov P, Sorejs O, Liska V, Buchler T, Poprach A, Finek J. Incidental Use of Beta-Blockers Is Associated with Outcome of Metastatic Colorectal Cancer Patients Treated with Bevacizumab-Based Therapy: A Single-Institution Retrospective Analysis of 514 Patients. Cancers (Basel) 2019; 11:cancers11121856. [PMID: 31769417 PMCID: PMC6966537 DOI: 10.3390/cancers11121856] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/07/2019] [Accepted: 11/19/2019] [Indexed: 12/26/2022] Open
Abstract
Background: Beta-adrenergic signalling plays an important role in several cancer-related processes, including angiogenesis. The impact of beta-blocker use on prognosis of cancer patients treated with antiangiogenic agents is unclear. The aim of this study was to evaluate the association between the incidental use of beta-blockers and the outcomes of patients with metastatic colorectal cancer (mCRC) treated with bevacizumab-based therapy. Methods: Clinical data from 514 mCRC patients treated with bevacizumab between 2005 and 2019 were analysed retrospectively. The association of progression-free survival (PFS) and overall survival (OS) with the incidental use of beta-blockers and other common antihypertensive drugs was assessed. Results: The median PFS and OS for patients using beta-blockers was 11.40 (95% confidence interval (CI) 10.10–13.61) months and 26.8 (95% CI 22.2–32.2) months compared with 8.30 (95% CI 7.80–9.57) and 21.0 (95% CI 17.8–23.8) months for patients not using beta-blockers (p = 0.006 and p = 0.009, respectively). In the Cox multivariate analysis, the use of beta-blockers was a significant factor predicting both PFS (hazard ratio (HR) = 0.763 (95% CI 0.606–0.960), p = 0.021) and OS (HR = 0.730 (95% CI 0.560–0.951), p = 0.020). Conclusions: The results of the present retrospective study suggest that there is a significant association between the use of beta-blockers and favourable outcomes of mCRC patients treated with bevacizumab-based therapy.
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Affiliation(s)
- Ondrej Fiala
- Department of Oncology and Radiotherapy, Medical School and University Hospital in Pilsen, Charles University, alej Svobody 80, 30460 Pilsen, Czech Republic; (O.S.); (J.F.)
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 32300 Pilsen, Czech Republic; (P.O.); (V.L.)
- Correspondence: ; Tel.: +42-0728-655-488
| | - Pavel Ostasov
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 32300 Pilsen, Czech Republic; (P.O.); (V.L.)
| | - Ondrej Sorejs
- Department of Oncology and Radiotherapy, Medical School and University Hospital in Pilsen, Charles University, alej Svobody 80, 30460 Pilsen, Czech Republic; (O.S.); (J.F.)
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 32300 Pilsen, Czech Republic; (P.O.); (V.L.)
| | - Vaclav Liska
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 76, 32300 Pilsen, Czech Republic; (P.O.); (V.L.)
- Department of Surgery, Medical School and University Hospital in Pilsen, Charles University, alej Svobody 80, 30460 Pilsen, Czech Republic
| | - Tomas Buchler
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer Hospital, Videnska 800, 14059 Prague, Czech Republic;
| | - Alexandr Poprach
- Department of Comprehensive Cancer Care and Faculty of Medicine, Masaryk Memorial Cancer Institute and Masaryk University, Zluty kopec 7, 65653 Brno, Czech Republic;
| | - Jindrich Finek
- Department of Oncology and Radiotherapy, Medical School and University Hospital in Pilsen, Charles University, alej Svobody 80, 30460 Pilsen, Czech Republic; (O.S.); (J.F.)
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Fatima S, Hu X, Huang C, Zhang W, Cai J, Huang M, Gong RH, Chen M, Ho AHM, Su T, Wong HLX, Bian Z, Kwan HY. High-fat diet feeding and palmitic acid increase CRC growth in β2AR-dependent manner. Cell Death Dis 2019; 10:711. [PMID: 31558710 PMCID: PMC6763436 DOI: 10.1038/s41419-019-1958-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 08/26/2019] [Accepted: 09/05/2019] [Indexed: 01/07/2023]
Abstract
Epidemiology studies indicate that consumption of high-fat diet (HFD) is directly associated with the development of colorectal cancer (CRC). However, the exact component in HFD and the mechanism underlying its effect on CRC growth remained unclear. Our study shows that HFD feeding increases β2AR expression in the xenograft tissues of CRC-bearing mouse model; the elevated β2AR expression is reduced when HFD is replaced by control diet, which strongly suggests an association between HFD feeding and β2AR expression in CRC. HFD feeding increases palmitic acid and stearic acid levels in CRC; however, only palmitic acid increases β2AR expression, which is dependent upon Sp1. β2AR plays the dominant role in promoting CRC cell proliferation among all the β-AR subtypes. More importantly, knockout of β2AR or knockdown of Sp1 abolishes the palmitic acid increased CRC cell proliferation, suggesting palmitic acid increases CRC cell proliferation in β2AR-dependent manner. HFD or palmitic acid-rich diet (PAD) also fails to increase the tumor growth in xenograft mouse models bearing β2AR-knockout CRC cells. β2AR promotes CRC growth by increasing the phosphorylation of HSL at the residue S552. The phosphorylated and activated HSL (S552) changes the metabolic phenotype of CRC and increases energy production, which promotes CRC growth. Our study has revealed the unique tumorigenic properties of palmitic acid in promoting CRC growth, and have delineated the underlying mechanism of action. We are also the first to report the linkage between HFD feeding and β-adrenergic signaling pathway in relation to CRC growth.
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Affiliation(s)
- Sarwat Fatima
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xianjing Hu
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Chunhua Huang
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Weixiong Zhang
- Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Jing Cai
- Institute of Chinese Medical Sciences, University of Macau, Macau, China
- Research Center for Ecology and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Min Huang
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Rui-Hong Gong
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Minting Chen
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Alan H M Ho
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Tao Su
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Hoi Leong Xavier Wong
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Zhaoxiang Bian
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | - Hiu Yee Kwan
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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Beyond the boundaries of cardiology: Still untapped anticancer properties of the cardiovascular system-related drugs. Pharmacol Res 2019; 147:104326. [DOI: 10.1016/j.phrs.2019.104326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 06/18/2019] [Accepted: 06/21/2019] [Indexed: 02/07/2023]
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Sud S, O'Callaghan C, Jonker C, Karapetis C, Price T, Tebbutt N, Shapiro J, Van Hazel G, Pavlakis N, Gibbs P, Jeffrey M, Siu L, Gill S, Wong R, Jonker D, Tu D, Goodwin R. Hypertension as a predictor of advanced colorectal cancer outcome and cetuximab treatment response. ACTA ACUST UNITED AC 2018; 25:e516-e526. [PMID: 30607118 DOI: 10.3747/co.25.4069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Adrenergic receptor stimulation is involved in the development of hypertension (htn) and has been implicated in cancer progression and dissemination of metastases in various tumours, including colon cancer. Adrenergic antagonists such as beta-blockers (bbs) demonstrate inhibition of invasion and migration in colon cancer cell lines and have been associated with decreased mortality in colorectal cancer (crc). We examined the association of baseline htn and bb use with overall (os) and progression-free survival (pfs) in patients with pretreated, chemotherapy refractory, metastatic crc (mcrc). We also examined baseline htn as a predictor of cetuximab efficacy. Methods Using data from the Canadian Cancer Trials Group co.17 study [cetuximab vs. best supportive care (bsc)], we coded baseline htn and use of anti-htn medications, including bbs, for 572 patients. The chi-square test was used to assess the associations between those variables and baseline characteristics. Cox regression models were used for univariate and multivariate analyses of os and pfs by htn diagnosis and bb use. Results Baseline htn, bb use, and anti-htn medication use were not found to be prognostic for improved os. Baseline htn and bb use were not significant predictors of cetuximab benefit. Conclusions In chemorefractory mcrc, neither baseline htn nor bb use is a significant prognostic factor. Baseline htn and bb use are not predictive of cetuximab benefit. Further investigation to determine whether baseline htn or bb use have a similarly insignificant impact on prognosis in patients receiving earlier lines of treatment remains warranted.
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Affiliation(s)
- S Sud
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, University of Ottawa, Ottawa, ON
| | - C O'Callaghan
- ncic Clinical Trials Group, Queen's University, Kingston, ON
| | - C Jonker
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, University of Ottawa, Ottawa, ON
| | - C Karapetis
- Flinders University and Flinders Medical Centre, Flinders Centre for Innovation in Cancer, Bedford Park, SA
| | - T Price
- The Queen Elizabeth and University of Adelaide, Adelaide, SA
| | | | - J Shapiro
- Department of Medical Oncology, Monash University, Melbourne, VIC
| | | | - N Pavlakis
- Royal North Shore Hospital, Northern Clinical School, University of Sydney, St. Leonards, NSW
| | - P Gibbs
- Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - M Jeffrey
- Oncology Service, Christchurch Hospital, Christchurch, N.Z
| | - L Siu
- Princess Margaret Cancer Centre, University of Toronto, Toronto, ON
| | - S Gill
- University of British Columbia, BC Cancer, Vancouver, BC
| | - R Wong
- CancerCare Manitoba, Winnipeg, MB
| | - D Jonker
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, University of Ottawa, Ottawa, ON
| | - D Tu
- ncic Clinical Trials Group, Queen's University, Kingston, ON
| | - R Goodwin
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital Cancer Centre, University of Ottawa, Ottawa, ON
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23
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Effects of surgery and anesthetic choice on immunosuppression and cancer recurrence. J Transl Med 2018; 16:8. [PMID: 29347949 PMCID: PMC5774104 DOI: 10.1186/s12967-018-1389-7] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/15/2018] [Indexed: 12/22/2022] Open
Abstract
Background The relationship between surgery and anesthetic-induced immunosuppression and cancer recurrence remains unresolved. Surgery and anesthesia stimulate the hypothalamic–pituitary–adrenal (HPA) axis and sympathetic nervous system (SNS) to cause immunosuppression through several tumor-derived soluble factors. The potential impact of surgery and anesthesia on cancer recurrence was reviewed to provide guidance for cancer surgical treatment. Methods PubMed was searched up to December 31, 2016 using search terms such as, “anesthetic technique and cancer recurrence,” “regional anesthesia and cancer recurrence,” “local anesthesia and cancer recurrence,” “anesthetic technique and immunosuppression,” and “anesthetic technique and oncologic surgery.” Results Surgery-induced stress responses and surgical manipulation enhance tumor metastasis via release of angiogenic factors and suppression of natural killer (NK) cells and cell-mediated immunity. Intravenous agents such as ketamine and thiopental suppress NK cell activity, whereas propofol does not. Ketamine induces T-lymphocyte apoptosis but midazolam does not affect cytotoxic T-lymphocytes. Volatile anesthetics suppress NK cell activity, induce T-lymphocyte apoptosis, and enhance angiogenesis through hypoxia inducible factor-1α (HIF-1α) activity. Opioids suppress NK cell activity and increase regulatory T cells. Conclusion Local anesthetics such as lidocaine increase NK cell activity. Anesthetics such as propofol and locoregional anesthesia, which decrease surgery-induced neuroendocrine responses through HPA-axis and SNS suppression, may cause less immunosuppression and recurrence of certain types of cancer compared to volatile anesthetics and opioids.
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24
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Behrenbruch C, Shembrey C, Paquet-Fifield S, Mølck C, Cho HJ, Michael M, Thomson BNJ, Heriot AG, Hollande F. Surgical stress response and promotion of metastasis in colorectal cancer: a complex and heterogeneous process. Clin Exp Metastasis 2018; 35:333-345. [PMID: 29335811 DOI: 10.1007/s10585-018-9873-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 01/06/2018] [Indexed: 12/12/2022]
Abstract
Surgery remains the curative treatment modality for colorectal cancer in all stages, including stage IV with resectable liver metastasis. There is emerging evidence that the stress response caused by surgery as well as other perioperative therapies such as anesthesia and analgesia may promote growth of pre-existing micro-metastasis or potentially initiate tumor dissemination. Therapeutically targeting the perioperative period may therefore reduce the effect that surgical treatments have in promoting metastases, for example by combining β-adrenergic receptor antagonists and cyclooxygenase-2 (COX-2) inhibitors in the perioperative setting. In this paper, we highlight some of the mechanisms that may underlie surgery-related metastatic development in colorectal cancer. These include direct tumor spillage at the time of surgery, suppression of the anti-tumor immune response, direct stimulatory effects on tumor cells, and activation of the coagulation system. We summarize in more detail results that support a role for catecholamines as major drivers of the pro-metastatic effect induced by the surgical stress response, predominantly through activation of β-adrenergic signaling. Additionally, we argue that an improved understanding of surgical stress-induced dissemination, and more specifically whether it impacts on the level and nature of heterogeneity within residual tumor cells, would contribute to the successful clinical targeting of this process. Finally, we provide a proof-of-concept demonstration that ex-vivo analyses of colorectal cancer patient-derived samples using RGB-labeling technology can provide important insights into the heterogeneous sensitivity of tumor cells to stress signals. This suggests that intra-tumor heterogeneity is likely to influence the efficacy of perioperative β-adrenergic receptor and COX-2 inhibition, and that ex-vivo characterization of heterogeneous stress response in tumor samples can synergize with other models to optimize perioperative treatments and further improve outcome in colorectal and other solid cancers.
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Affiliation(s)
- Corina Behrenbruch
- Department of Pathology, University of Melbourne Centre for Cancer Research, The University of Melbourne, Victorian Comprehensive Cancer Centre, Level 10, 305 Grattan Street, Melbourne, VIC, 3000, Australia
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, 305 Grattan St, Melbourne, 3000, Australia
| | - Carolyn Shembrey
- Department of Pathology, University of Melbourne Centre for Cancer Research, The University of Melbourne, Victorian Comprehensive Cancer Centre, Level 10, 305 Grattan Street, Melbourne, VIC, 3000, Australia
| | - Sophie Paquet-Fifield
- Department of Pathology, University of Melbourne Centre for Cancer Research, The University of Melbourne, Victorian Comprehensive Cancer Centre, Level 10, 305 Grattan Street, Melbourne, VIC, 3000, Australia
| | - Christina Mølck
- Department of Pathology, University of Melbourne Centre for Cancer Research, The University of Melbourne, Victorian Comprehensive Cancer Centre, Level 10, 305 Grattan Street, Melbourne, VIC, 3000, Australia
| | - Hyun-Jung Cho
- Biological Optical Microscopy Platform, The University of Melbourne, Medical Building, Grattan Street, Parkville, 3010, Australia
| | - Michael Michael
- Division of Cancer Medicine, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, 305 Grattan St, Melbourne, 3000, Australia
| | - Benjamin N J Thomson
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, 305 Grattan St, Melbourne, 3000, Australia
- Department of Surgery, Royal Melbourne Hospital, The University of Melbourne, 300 Grattan St, Parkville, 3000, Australia
| | - Alexander G Heriot
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Victorian Comprehensive Cancer Centre, 305 Grattan St, Melbourne, 3000, Australia
| | - Frédéric Hollande
- Department of Pathology, University of Melbourne Centre for Cancer Research, The University of Melbourne, Victorian Comprehensive Cancer Centre, Level 10, 305 Grattan Street, Melbourne, VIC, 3000, Australia.
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25
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Sohawon R, Truran P, Webster J, Harrison BJ, Balasubramanian SP. Optimal Management of a Synchronous Diagnosis of Phaeochromocytoma and Colorectal Neoplasia. Indian J Surg Oncol 2017; 8:622-626. [PMID: 29203998 DOI: 10.1007/s13193-017-0627-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 02/13/2017] [Indexed: 11/25/2022] Open
Abstract
The incidence rates of phaeochromocytoma and colorectal cancer (CRC) are approximately 1 and 65 per 100,000 per year, respectively. Simultaneous presentation of these conditions is rare and poses unique management challenges. We report on treatment strategies and clinical outcomes in a series of patients with colorectal neoplasia and phaeochromocytoma. Demographic and clinical details of four patients over a 4-year period were reviewed. The median (range) age at first presentation was 66 (52-70) years. Phaeochromocytoma (2.5-12.5 cm) was confirmed on biochemistry after incidental detection of an adrenal mass on CT scan-three had CT for staging of CRC and one had CT scan for weight loss. Adrenalectomy (three retroperitoneoscopic and one open procedure) was first performed after maximally tolerated alpha blockade; no significant complications were observed. Normalisation of biochemistry was confirmed and the patients then underwent colorectal surgery-laparoscopic right hemicolectomy, open right hemicolectomy (with further extensive surgery) for locally advanced cancer, laparoscopic low anterior resection and open high anterior resection. One respiratory infection and a seroma were the post-operative complications seen. In patients with a simultaneous diagnosis of phaeochromocytoma and CRC, surgical interventions should be staged. Adrenalectomy should first be performed to avoid haemodynamic instability during colorectal resection. A retroperitoneoscopic approach to the adrenal in patients with ipsilateral colonic tumours avoids transgressing the planes for colorectal resection. The synchronous diagnosis of these two rare conditions and the reported stimulatory effect of catecholamines on colorectal epithelia raise the possibility of an increased incidence of colorectal neoplasia in patients with phaeochromocytoma.
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Affiliation(s)
- Ridwaan Sohawon
- University of Sheffield, Beech Hill Road, Sheffield, S10 2RX UK
| | - Peter Truran
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Jonathan Webster
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | | | - Sabapathy P Balasubramanian
- University of Sheffield, Beech Hill Road, Sheffield, S10 2RX UK.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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26
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Nilsson MB, Sun H, Diao L, Tong P, Liu D, Li L, Fan Y, Poteete A, Lim SO, Howells K, Haddad V, Gomez D, Tran H, Pena GA, Sequist LV, Yang JC, Wang J, Kim ES, Herbst R, Lee JJ, Hong WK, Wistuba I, Hung MC, Sood AK, Heymach JV. Stress hormones promote EGFR inhibitor resistance in NSCLC: Implications for combinations with β-blockers. Sci Transl Med 2017; 9:eaao4307. [PMID: 29118262 PMCID: PMC5870120 DOI: 10.1126/scitranslmed.aao4307] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/11/2017] [Indexed: 12/15/2022]
Abstract
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) resistance mediated by T790M-independent mechanisms remains a major challenge in the treatment of non-small cell lung cancer (NSCLC). We identified a targetable mechanism of EGFR inhibitor resistance whereby stress hormones activate β2-adrenergic receptors (β2-ARs) on NSCLC cells, which cooperatively signal with mutant EGFR, resulting in the inactivation of the tumor suppressor, liver kinase B1 (LKB1), and subsequently induce interleukin-6 (IL-6) expression. We show that stress and β2-AR activation promote tumor growth and EGFR inhibitor resistance, which can be abrogated with β-blockers or IL-6 inhibition. IL-6 was associated with a worse outcome in EGFR TKI-treated NSCLC patients, and β-blocker use was associated with lower IL-6 concentrations and improved benefit from EGFR inhibitors. These findings provide evidence that chronic stress hormones promote EGFR TKI resistance via β2-AR signaling by an LKB1/CREB (cyclic adenosine 3',5'-monophosphate response element-binding protein)/IL-6-dependent mechanism and suggest that combinations of β-blockers with EGFR TKIs merit further investigation as a strategy to abrogate resistance.
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Affiliation(s)
- Monique B Nilsson
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Huiying Sun
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lixia Diao
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Pan Tong
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Diane Liu
- Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lerong Li
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Youhong Fan
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alissa Poteete
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Seung-Oe Lim
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | | | - Daniel Gomez
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hai Tran
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Guillermo Armaiz Pena
- Department of Gynecologic Oncology and Reproductive Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lecia V Sequist
- Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA
| | - James C Yang
- Graduate Institute of Oncology, National Taiwan University and National Taiwan University Hospital, Taipei City 100, Taiwan
| | - Jing Wang
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Edward S Kim
- Solid Tumor Oncology and Investigational Therapeutics, Levine Cancer Institute Carolinas HealthCare System, Charlotte, NC 28204, USA
| | - Roy Herbst
- Section of Medical Oncology, Yale Cancer Center and Smilow Cancer Hospital, Yale, New Haven, CT 06510, USA
| | - J Jack Lee
- Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Waun Ki Hong
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ignacio Wistuba
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - John V Heymach
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Abstract
Surgery/anesthetic technique-stimulated immunosuppression in the perioperative period might cause an increase in cancer-related mortality. Whether anesthetic technique can affect the outcomes of cancer patients remains inconclusive. This review discusses data from the available literature on anesthetic techniques applied in oncologic surgery, the long-term outcomes of anesthetic technique, and their relation to survival and cancer recurrence. Searches of the PubMed database up to June 30, 2016, were conducted to identify publications with the terms "anesthetic technique and cancer recurrence," "regional anesthesia and cancer recurrence," "local anesthesia and cancer recurrence," "anesthetic technique and immunosuppression," and "anesthetic technique and oncologic surgery." Surgery/anesthesia-stimulated activation of the hypothalamic-pituitary-adrenal (HPA) axis and the sympathetic nervous system (SNS) provides immunosuppression through several soluble factors. Volatile anesthetics and opioids suppress cell-mediated immunity (CMI) and promote the proliferation of cancer cells and angiogenesis, whereas propofol does not suppress CMI and inhibits tumor angiogenesis. Regional anesthesia (RA) protects CMI and diminishes the surgical neuroendocrine stress response by blocking afferent neural transmission that stimulates the HPA axis and SNS, decreasing the requirement for opioids and volatile anesthetics and thereby decreasing cancer recurrence. Preclinical and retrospective studies highlight a potential benefit of anesthetic technique in reducing cancer-related mortality and recurrence by attenuating immunosuppression following surgical treatment in patients with specific types of cancer. Several well-planned, prospective, randomized controlled trials (RCTs) are underway that may provide more conclusive and definitive results regarding the benefits of anesthetic technique on survival in oncologic surgery.
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Affiliation(s)
- Ryungsa Kim
- Department of Breast Surgery, Hiroshima Mark Clinic, 1-4-3F, 2-Chome, Ohte-machi, Naka-ku, Hiroshima, 730-0051, Japan.
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28
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Ciurea RN, Rogoveanu I, Pirici D, Târtea GC, Streba CT, Florescu C, Cătălin B, Puiu I, Târtea EA, Vere CC. B2 adrenergic receptors and morphological changes of the enteric nervous system in colorectal adenocarcinoma. World J Gastroenterol 2017; 23:1250-1261. [PMID: 28275305 PMCID: PMC5323450 DOI: 10.3748/wjg.v23.i7.1250] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/26/2016] [Accepted: 01/11/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To study the morphology of the enteric nervous system and the expression of beta-2 adrenergic (B2A) receptors in primary colorectal cancer.
METHODS In this study, we included forty-eight patients with primary colorectal cancer and nine patients for control tissue from the excision of a colonic segment for benign conditions. We determined the clinicopathological features and evaluated the immunohistochemical expression pattern of B2A receptors as well as the morphological changes of the enteric nervous system (ENS). In order to assess statistical differences, we used the student t-test for comparing the means of two groups and one-way analysis of variance with Bonferroni’s post hoc analysis for comparing the means of more than two groups. Correlations were assessed using the Pearson’s correlation coefficient.
RESULTS B2A receptors were significantly associated with tumor grading, tumor size, tumor invasion, lymph node metastasis (P < 0.05), while there were no statistically significant associations with gender, CRC location and gross appearance (P > 0.05). We observed, on one hand, a decrease of the relative area for both Auerbach and Meissner plexuses with the increase of the tumor grading, and on the other hand, an increase of the relative area of other nervous elements not in the Meissner plexus or in the Auerbach plexus with the tumor grading. For G1 tumors we found that epithelial B2A area showed an inverse correlation with the Auerbach plexus areas [r(14) = -0.531, P < 0.05], while for G2 tumors, epithelial B2A areas showed an indirect variation with both the Auerbach plexus areas [r(14) = -0.453, P < 0.05] and the Meissner areas [r(14) = -0.825, P < 0.01]. For G3 tumors, the inverse dependence increased for both Auerbach [r(14) = -0.587, P < 0.05] and Meissner [r(14) = -0.934, P < 0.05] plexuses.
CONCLUSION B2A receptors play an important role in colorectal carcinogenesis and can be utilized as prognostic factors. Furthermore, study of the ENS in colorectal cancer may lead to targeted molecular therapies.
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29
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Coelho M, Soares-Silva C, Brandão D, Marino F, Cosentino M, Ribeiro L. β-Adrenergic modulation of cancer cell proliferation: available evidence and clinical perspectives. J Cancer Res Clin Oncol 2016; 143:275-291. [PMID: 27709364 DOI: 10.1007/s00432-016-2278-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/21/2016] [Indexed: 12/30/2022]
Abstract
PURPOSE In this review, we aimed to present and discuss the available preclinical and epidemiological evidences regarding the modulation of cancer cell proliferation by β-adrenoceptors (β-AR), with a specific focus on the putative effects of β-blockers according to their pharmacological properties. METHODS A comprehensive review of the published literature was conducted, and the evidences concerning the involvement of β-AR in cancer as well as the possible role of β-blockers were selected and discussed. RESULTS The majority of reviewed studies show that: (1) All the cancer types express both β1- and β2-AR, with the exception of neuroblastoma only seeming to express β2-AR; (2) adrenergic agonists are able to increase proliferation of several types of cancers; (3) the proliferative effect seems to be mediated by both β1- and β2-AR; (4) binding to β-AR results in a cAMP transient flux which activates two major downstream effector systems: protein kinase A and EPAC and (5) β-blockers might be putative adjuvants for cancer treatment. CONCLUSIONS Overall, the reviewed studies show strong evidences that β-AR activation, through several intracellular mechanisms, modulate tumor cell proliferation suggesting β-blockers can be a feasible therapeutic approach to antagonize β-adrenergic response or have a protective effect per se. This review highlight the need for intensifying the research not only on the molecular mechanisms underlying the β-adrenergic influence in cancer, but also on the implications of biased agonism of β-blockers as potential antitumor agents.
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Affiliation(s)
- Marisa Coelho
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal.,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Center for Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Cátia Soares-Silva
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal.,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Daniela Brandão
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Medical Education and Simulation, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Franca Marino
- Center for Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Marco Cosentino
- Center for Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Laura Ribeiro
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal. .,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,Department of Medical Education and Simulation, Faculty of Medicine, University of Porto, Porto, Portugal.
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30
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The Evaluation of Beta-2-Adrenoreceptors' Expression in Normal Peritumoral Tissue in Patients with Colorectal Adenocarcinoma. CURRENT HEALTH SCIENCES JOURNAL 2016; 42:335-341. [PMID: 30581586 PMCID: PMC6269617 DOI: 10.12865/chsj.42.04.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 12/21/2016] [Indexed: 11/18/2022]
Abstract
INTRODUCTION The aim of this study is to evaluate the expression of beta-2 adrenergic receptors in the normal peritumoral tissue at the colorectal level, just after the front tumor invasion, in patients with colorectal cancer. METHODS In this study we analyzed normal peritumoral tissues belonging to 56 patients, who were diagnosed with colorectal adenocarcinoma. These tissues were fixed in paraformaldehyde and paraffinembedded. The immunohistochemical study was done on seriate slides following the hematoxylin and eosin staining, after diagnostic and grading. Correlations were made between beta-2-adrenoreceptors' expression in the normal peritumoral tissue and the clinical and histopathological parameters of the patients with colorectal cancer. RESULTS There are positive correlations between the expression of beta-2-adrenoreceptors and feminine gender, age group under 50 years, tumor size under 5cm, tumor invasion T3-4 and tumor metastasis in regional lymph nodes N≥2. By analyzing the expression of beta-2-adrenoreceptors in peritumoral tissue depending on tumor grading one can notice that there are positive correlations between beta-2-adrenoreceptors' expression and poorly differentiated colorectal adenocarcinoma. CONCLUSIONS Positive correlation between this type of receptors in normal glandular epithelium, in the vicinity of tumor invasion front of colorectal neoplasm, and certain clinicopathological features suggests the involvement of tumor microenvironment, which expresses them, in the pathogenesis of this neoplasm.
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31
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Chin CC, Li JM, Lee KF, Huang YC, Wang KC, Lai HC, Cheng CC, Kuo YH, Shi CS. Selective β2-AR Blockage Suppresses Colorectal Cancer Growth Through Regulation of EGFR-Akt/ERK1/2 Signaling, G1-Phase Arrest, and Apoptosis. J Cell Physiol 2015; 231:459-72. [PMID: 26189563 DOI: 10.1002/jcp.25092] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 07/16/2015] [Indexed: 12/18/2022]
Abstract
The stress-upregulated catecholamines-activated β1- and β2-adrenergic receptors (β1/2-ARs) have been shown to accelerate the progression of cancers such as colorectal cancer (CRC). We investigated the underlying mechanism of the inhibition of β1/2-ARs signaling for the treatment of CRC and elucidated the significance of β2-AR expression in CRC in vitro and in clinical samples. The impacts of β1/2-AR antagonists in CRC in vitro and CRC-xenograft in vivo were examined. We found that repression of β2-AR but not β1-AR signaling selectively suppressed cell viability, induced G1-phase cell cycle arrest, caused both intrinsic and extrinsic pathways-mediated apoptosis of specific CRC cells and inhibited CRC-xenograft growth in vivo. Moreover, the expression of β2-AR was not consistent with the progression of CRC in vitro or in clinical samples. Our data evidence that the expression profiles, signaling, and blockage of β2-AR have a unique pattern in CRC comparing to other cancers. β2-AR antagonism selectively suppresses the growth of CRC accompanying active β2-AR signaling, which potentially carries wild-type KRAS, in vitro and in vivo via the inhibition of β2-AR transactivated EFGR-Akt/ERK1/2 signaling pathway. Thus, β2-AR blockage might be a potential therapeutic strategy for combating the progressions of β2-AR-dependent CRC.
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Affiliation(s)
- Chih-Chien Chin
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Jhy-Ming Li
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kam-Fai Lee
- Department of Anatomic Pathology, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Yun-Ching Huang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Kuan-Chieh Wang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsiao-Ching Lai
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Chung Cheng
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Hung Kuo
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Division of Colon and Rectal Surgery, Department of Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Chung-Sheng Shi
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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32
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Giampieri R, Scartozzi M, Del Prete M, Faloppi L, Bianconi M, Ridolfi F, Cascinu S. Prognostic Value for Incidental Antihypertensive Therapy With β-Blockers in Metastatic Colorectal Cancer. Medicine (Baltimore) 2015; 94:e719. [PMID: 26091452 PMCID: PMC4616528 DOI: 10.1097/md.0000000000000719] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Previous studies suggested that the incidental use of β-blockers might influence clinical outcome in solid tumors. We assessed the correlation between the incidental use of β-blockers and clinical outcome in colorectal cancer patients treated with first-line chemotherapy alone or in combination with bevacizumab in metastatic colorectal cancer patients. We collected data from 235 metastatic colorectal cancer patients treated with first-line chemotherapy alone (128 patients) or with bevacizumab (107 patients). Patients were stratified for clinical factors such as β-blockers use, age, sex, and site of metastases, previous adjuvant chemotherapy and ECOG performance status. In the chemotherapy alone group patients receiving β-blockers showed an improved overall survival (median OS 41.3 vs 25.7 months, P = 0.03, HR: 2.26, 95% CI: 1.05-3.24). A significant relationship with improved response rate was also evident for B-blocker users (P = 0.044). On the contrary in the β-blockers users group treated with chemotherapy in combination with bevacizumab we observed a trend toward a worse overall survival although nonstatistically significant (median OS 18.5 vs 23.6 months, HR: 0. 89, 95% CI: 0.38-2.03, P = 0.77). Our analysis confirmed a potential prognostic role for the use of β-blockers in colorectal cancer patients treated with chemotherapy. Our findings also suggest a potential worse outcome for patients on β-blockers receiving bevacizumab. Future prospective studies should include the incidental use of β-blockers as stratification factor for clinical outcome.
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Affiliation(s)
- Riccardo Giampieri
- From the Department of Medical Oncology, Translational Oncology Unit, Università Politecnica delle Marche, AOU "Ospedali Riuniti", , Ancona, Italy
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33
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Coelho M, Moz M, Correia G, Teixeira A, Medeiros R, Ribeiro L. Antiproliferative effects of β-blockers on human colorectal cancer cells. Oncol Rep 2015; 33:2513-20. [PMID: 25812650 DOI: 10.3892/or.2015.3874] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/13/2014] [Indexed: 12/25/2022] Open
Abstract
Colon cancer is the fourth and third most common cancer, respectively in men and women worldwide and its incidence is on the increase. Stress response has been associated with the incidence and development of cancer. The catecholamines (CA), adrenaline (AD) and noradrenaline (NA), are crucial mediators of stress response, exerting their effects through interaction with α- and β-adrenergic receptors (AR). Colon cancer cells express β-AR, and their activation has been implicated in carcinogenesis and tumor progression. Interest concerning the efficacy of β-AR blockers as possible additions to cancer treatment has increased. The aim of this study was to investigate the effect of several AR agonists and β-blockers following cell proliferation of HT-29 cells, a human colon adenocarcinoma cell line. For this purpose, HT-29 cells were incubated in the absence (control) or in the presence of the AR-agonists, AD, NA and isoprenaline (ISO) (0.1-100 µM) for 12 or 24 h. The tested AR agonists revealed proliferative effects on HT-29 cells. In order to study the effect of several β-blockers following proliferation induced by AR activation, the cells were treated with propranolol (PRO; 50 µM), carvedilol (CAR; 5 µM), atenolol (ATE; 50 µM), or ICI 118,551 (ICI; 5 µM) for 45 min prior, and simultaneously, to incubation with each of the AR agonists, AD and ISO, both at 1 and 10 µM. The results suggested that adrenergic activation plays an important role in colon cancer cell proliferation, most probably through β-AR. The β-blockers under study were able to reverse the proliferation induced by AD and ISO, and some of these blockers significantly decreased the proliferation of HT-29 cells. The elucidation of the intracellular pathways involved in CA-induced proliferation of colon cancer cells, and in the reversion of this effect by β-blockers, may contribute to identifying promising strategies in cancer treatment.
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Affiliation(s)
- M Coelho
- Department of Biochemistry, Faculty of Medicine of The University of Porto, Porto, Portugal
| | - M Moz
- Department of Biochemistry, Faculty of Medicine of The University of Porto, Porto, Portugal
| | - G Correia
- Department of Biochemistry, Faculty of Medicine of The University of Porto, Porto, Portugal
| | - A Teixeira
- Molecular Oncology Group, Portuguese Institute of Oncology of Porto, Porto, Portugal
| | - R Medeiros
- Molecular Oncology Group, Portuguese Institute of Oncology of Porto, Porto, Portugal
| | - L Ribeiro
- Department of Biochemistry, Faculty of Medicine of The University of Porto, Porto, Portugal
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Vignot S, Lefebvre C, Frampton GM, Meurice G, Yelensky R, Palmer G, Capron F, Lazar V, Hannoun L, Miller VA, André F, Stephens PJ, Soria JC, Spano JP. Comparative analysis of primary tumour and matched metastases in colorectal cancer patients: evaluation of concordance between genomic and transcriptional profiles. Eur J Cancer 2015; 51:791-9. [PMID: 25797355 DOI: 10.1016/j.ejca.2015.02.012] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/12/2015] [Accepted: 02/19/2015] [Indexed: 12/22/2022]
Abstract
PURPOSE Focal and temporal tumour heterogeneity can represent a major challenge for biology-guided therapies. This study proposes to investigative molecular discrepancies between primary colorectal cancer (CRC) samples and matched metastases. EXPERIMENTAL DESIGN Surgical samples from primary and matched metastatic tissues from 13 CRC patients along with their adjacent normal tissue were evaluated. A mutational analysis was performed using a targeted Next Generation Sequencing assay (Foundation Medicine) with a focus on known recurrent somatic mutations as surrogate of key oncogenic events. Gene expression analysis was also performed to investigate transcriptional discrepancies. RESULTS Among the 26 samples, 191 mutations were identified including mutations in APC (13 pts), TP53 (11 pts), and KRAS (7 pts). Global concordance rate for mutations was 78% between primary and metastatic tumours and raised to 90% for 12 known recurrent mutations in CRC. Differential gene expression analysis revealed a low number of significantly variant transcripts between primary and metastatic tumours once the tissue effect was taken into account. Only two pathways (ST_ADRENERGIC, PID_REELINPATHWAY) were differentially up-regulated in metastases among 17 variant pathways. A common profile in primary and metastatic tumours revealed conserved pathways mostly involved in cell cycle regulation. Only two pathways were significantly down regulated compared to normal control, including regulation of autophagy (KEGG_REGULATION_OF_AUTOPHAGY). CONCLUSION These results suggest that profiles of primary tumour can identify key alterations present in matched CRC metastases at first metastatic progression. Gene expression analysis identified mainly conserved pathways between primary tumour and matched liver metastases.
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Affiliation(s)
- Stéphane Vignot
- Oncologie Hématologie, Hôpitaux de Chartres, Chartres Le Coudray, France; INSERM U981, Gustave Roussy, Villejuif Grand Paris, France
| | | | | | - Guillaume Meurice
- Unité de Génomique Fonctionnelle, Gustave Roussy, Villejuif Grand Paris, France
| | | | | | | | - Vladimir Lazar
- Unité de Génomique Fonctionnelle, Gustave Roussy, Villejuif Grand Paris, France
| | | | | | - Fabrice André
- INSERM U981, Gustave Roussy, Villejuif Grand Paris, France
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Ciccarelli M, Rusciano M, Sorriento D, Maione AS, Soprano M, Iaccarino G, Illario M. Messages from the Border: Novel Insights in Signal Transduction Pathways Involved in Tumor Invasion and Metastasis. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jct.2015.62022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Akbar S, Alsharidah MS. Are Beta Blockers New Potential Anticancer Agents? Asian Pac J Cancer Prev 2014; 15:9567-74. [DOI: 10.7314/apjcp.2014.15.22.9567] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zhao L, Xu JH. Role of adrenergic receptor signaling pathway in colorectal cancer. Shijie Huaren Xiaohua Zazhi 2014; 22:5285-5290. [DOI: 10.11569/wcjd.v22.i34.5285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer is one of the most common malignancies. During the past decades, studies have continued to shed light on the role of adrenergic receptor signaling in cancer. Preclinical studies have shown that adrenergic receptor signaling is involved in colon cancer progression and metastasis and have implicated that stress hormones or behavioral changes are highly associated with tumor formation and progression. Therefore, further understanding of the role of the adrenergic receptor (AR) signaling pathway in colorectal cancer progression and metastasis will be of great value in developing therapeutic strategies for this malignancy.
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Peng X, Wang F, Li L, Bum-Erdene K, Xu D, Wang B, Sinn AA, Pollok KE, Sandusky GE, Li L, Turchi JJ, Jalal SI, Meroueh SO. Exploring a structural protein-drug interactome for new therapeutics in lung cancer. MOLECULAR BIOSYSTEMS 2014; 10:581-91. [PMID: 24402119 DOI: 10.1039/c3mb70503j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pharmacology of drugs is often defined by more than one protein target. This property can be exploited to use approved drugs to uncover new targets and signaling pathways in cancer. Towards enabling a rational approach to uncover new targets, we expand a structural protein-ligand interactome () by scoring the interaction among 1000 FDA-approved drugs docked to 2500 pockets on protein structures of the human genome. This afforded a drug-target network whose properties compared favorably with previous networks constructed using experimental data. Among drugs with the highest degree and betweenness two are cancer drugs and one is currently used for treatment of lung cancer. Comparison of predicted cancer and non-cancer targets reveals that the most cancer-specific compounds were also the most selective compounds. Analysis of compound flexibility, hydrophobicity, and size showed that the most selective compounds were low molecular weight fragment-like heterocycles. We use a previously-developed screening approach using the cancer drug erlotinib as a template to screen other approved drugs that mimic its properties. Among the top 12 ranking candidates, four are cancer drugs, two of them kinase inhibitors (like erlotinib). Cellular studies using non-small cell lung cancer (NSCLC) cells revealed that several drugs inhibited lung cancer cell proliferation. We mined patient records at the Regenstrief Medical Record System to explore the possible association of exposure to three of these drugs with occurrence of lung cancer. Preliminary in vivo studies using the non-small cell lung cancer (NCLSC) xenograft model showed that losartan- and astemizole-treated mice had tumors that weighed 50 (p < 0.01) and 15 (p < 0.01) percent less than the treated controls. These results set the stage for further exploration of these drugs and to uncover new drugs for lung cancer therapy.
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Affiliation(s)
- Xiaodong Peng
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indiana 46202, USA
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von Rosenvinge EC, Cheng K, Drachenberg CB, Fowler CB, Evers DL, Xie G, Raufman JP. Bedside to bench: role of muscarinic receptor activation in ultrarapid growth of colorectal cancer in a patient with pheochromocytoma. Mayo Clin Proc 2013; 88:1340-6. [PMID: 24100192 PMCID: PMC4076953 DOI: 10.1016/j.mayocp.2013.06.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 05/17/2013] [Accepted: 06/20/2013] [Indexed: 02/07/2023]
Abstract
An elderly man with long-standing, nonresectable pheochromocytoma had rapid development of rectal adenocarcinoma despite close endoscopic surveillance. We determined that the patient's colorectal cancer overexpressed muscarinic receptor subtype 3, whereas his pheochromocytoma expressed choline acetyltransferase, an enzyme required to produce acetylcholine, which is a muscarinic receptor agonist. These findings suggested that acetylcholine release from the pheochromocytoma stimulated rapid growth of the rectal neoplasm. As proof of principle, we found that culture media conditioned by pheochromocytoma cells stimulates proliferation of a human colon cancer cell line, an effect attenuated by atropine, a muscarinic receptor inhibitor. Our observations provide both clinical and laboratory evidence that muscarinic receptor agonists promote the growth of colorectal neoplasia.
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Affiliation(s)
- Erik C von Rosenvinge
- Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD; VA Maryland Health Care System, Baltimore, MD.
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Exposure to ACEI/ARB and β-Blockers Is Associated with Improved Survival and Decreased Tumor Progression and Hospitalizations in Patients with Advanced Colon Cancer. Transl Oncol 2013; 6:539-45. [PMID: 24151534 DOI: 10.1593/tlo.13346] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/20/2013] [Accepted: 06/28/2013] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Advanced colon cancer is associated with weight loss and decreased survival. Studies suggest that angiotensin and β-adrenergic blockade decrease colon cancer progression and ameliorate weight loss. This study aims to determine whether exposure to β-adrenoceptor blockers (BBs), angiotensin-converting enzyme inhibitors (ACEIs), or angiotensin receptor blockers (ARBs) is associated with decreased mortality, tumor progression, number of hospitalizations, or weight loss in colorectal cancer. METHODS Retrospective chart review included patients with advanced colorectal cancer. Survival, stage, hospitalization, cancer progression, cancer treatment, and body weight history were collected. RESULTS Two hundred sixty-two of 425 new stage III to IV colorectal cancer cases reviewed met the study criteria. Those exposed to ACEI/ARB, BB, or both were more likely to have diabetes, hypertension, and stage III colorectal cancer. Adjusting for age, presence of hypertension and diabetes, and stage, ACEI/ARB + BB exposure was associated with decreased mortality compared to unexposed individuals [hazard ratio (HR) = 0.5, confidence interval (CI) = 0.29-0.85; Cox regression, P = .01]. Fewer total and cancer-related hospitalizations and decreased cancer progression in the ACEI/ARB + BB group versus the unexposed group (HR = 0.59, CI = 0.36-0.99, P = .047) were seen. Exposure did not affect weight changes; furthermore, body weight changes from both prediagnosis and at diagnosis to 6, 12, 18, and 24 months postdiagnosis predicted survival. CONCLUSIONS We have observed an association between exposure to a combination of ACEI/ARB + BB and increased survival, decreased hospitalizations, and decreased tumor progression in advanced colorectal cancer. Future studies will be needed to replicate these results and generalize them to broader populations. Determination of causality will require a randomized controlled trial.
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β-Adrenergic system, a backstage manipulator regulating tumour progression and drug target in cancer therapy. Semin Cancer Biol 2013; 23:533-42. [PMID: 24012659 DOI: 10.1016/j.semcancer.2013.08.009] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 08/27/2013] [Indexed: 12/18/2022]
Abstract
β-Adrenoceptors are broadly distributed in various tissues of the body. Stress hormones regulate a panel of important physiological functions and disease states including cancer. Nicotine and its derivatives could stimulate the release of stress hormones from cancer cells, leading to the promotion of cancer development. β-Blockers have been widely used to control hypertension for decades. Recently, these agents could have significant implications in cancer therapy through blockade of adrenoceptors in tumour tissues. In this review, we summarize recent advancements about the influence of stress hormones, nicotine and β-adrenoceptors on cancer cell proliferation, apoptosis, invasion and metastasis, and also tumour vasculature normalization. Relevant signal pathways and potential value of β-blockers in the treatment of cancer are also discussed in this review.
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Lương KVQ, Nguyen LTH. The role of Beta-adrenergic receptor blockers in Alzheimer's disease: potential genetic and cellular signaling mechanisms. Am J Alzheimers Dis Other Demen 2013; 28:427-39. [PMID: 23689075 PMCID: PMC10852699 DOI: 10.1177/1533317513488924] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
According to genetic studies, Alzheimer's disease (AD) is linked to beta-adrenergic receptor blockade through numerous factors, including human leukocyte antigen genes, the renin-angiotensin system, poly(adenosine diphosphate-ribose) polymerase 1, nerve growth factor, vascular endothelial growth factor, and the reduced form of nicotinamide adenine dinucleotide phosphate. Beta-adrenergic receptor blockade is also implicated in AD due to its effects on matrix metalloproteinases, mitogen-activated protein kinase pathways, prostaglandins, cyclooxygenase-2, and nitric oxide synthase. Beta-adrenergic receptor blockade may also have a significant role in AD, although the role is controversial. Behavioral symptoms, sex, or genetic factors, including Beta 2-adrenergic receptor variants, apolipoprotein E, and cytochrome P450 CYP2D6, may contribute to beta-adrenergic receptor blockade modulation in AD. Thus, the characterization of beta-adrenergic receptor blockade in patients with AD is needed.
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Affiliation(s)
- Khanh vinh quoc Lương
- Vietnamese American Medical Research Foundation, Westminster, California, CA 92683, USA.
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Polyisoprenylated methylated protein methyl esterase is both sensitive to curcumin and overexpressed in colorectal cancer: implications for chemoprevention and treatment. BIOMED RESEARCH INTERNATIONAL 2013; 2013:416534. [PMID: 23936796 PMCID: PMC3713324 DOI: 10.1155/2013/416534] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 06/17/2013] [Indexed: 12/12/2022]
Abstract
Inhibition of PMPMEase, a key enzyme in the polyisoprenylation pathway, induces cancer cell death. In this study, purified PMPMEase was inhibited by the chemopreventive agent, curcumin, with a Ki of 0.3 μM (IC50 = 12.4 μM). Preincubation of PMPMEase with 1 mM curcumin followed by gel-filtration chromatography resulted in recovery of the enzyme activity, indicative of reversible inhibition. Kinetics analysis with N-para-nitrobenzoyl-S-trans,trans-farnesylcysteine methyl ester substrate yielded KM values of 23.6 ± 2.7 and 85.3 ± 15.3 μM in the absence or presence of 20 μM curcumin, respectively. Treatment of colorectal cancer (Caco2) cells with curcumin resulted in concentration-dependent cell death with an EC50 of 22.0 μg/mL. PMPMEase activity in the curcumin-treated cell lysate followed a similar concentration-dependent profile with IC50 of 22.6 μg/mL. In colorectal cancer tissue microarray studies, PMPMEase immunoreactivity was significantly higher in 88.6% of cases compared to normal colon tissues (P < 0.0001). The mean scores ± SEM were 91.7 ± 11.4 (normal), 75.0 ± 14.4 (normal adjacent), 294.8 ± 7.8 (adenocarcinoma), and 310.0 ± 22.6 (mucinous adenocarcinoma), respectively. PMPMEase overexpression in colorectal cancer and cancer cell death stemming from its inhibition is an indication of its possible role in cancer progression and a target for chemopreventive agents.
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44
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Luong KVQ, Nguyen LTH. The role of β-adrenergic blockers in Parkinson's disease: possible genetic and cell-signaling mechanisms. Am J Alzheimers Dis Other Demen 2013; 28:306-17. [PMID: 23695225 PMCID: PMC10852762 DOI: 10.1177/1533317513488919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Genetic studies have identified numerous factors linking β-adrenergic blockade to Parkinson's disease (PD), including human leukocyte antigen genes, the renin-angiotensin system, poly(adenosine diphosphate-ribose) polymerase 1, nerve growth factor, vascular endothelial growth factor, and the reduced form of nicotinamide adenine dinucleotide phosphate. β-Adrenergic blockade has also been implicated in PD via its effects on matrix metalloproteinases, mitogen-activated protein kinase pathways, prostaglandins, cyclooxygenase 2, and nitric oxide synthase. β-Adrenergic blockade may have a significant role in PD; therefore, the characterization of β-adrenergic blockade in patients with PD is needed.
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Oliveira SCB, Santarino IB, Enache TA, Nunes C, Laranjinha J, Barbosa RM, Oliveira-Brett AM. Human colon adenocarcinoma HT-29 cell: electrochemistry and nicotine stimulation. Bioelectrochemistry 2013; 94:30-8. [PMID: 23774106 DOI: 10.1016/j.bioelechem.2013.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/14/2013] [Accepted: 05/17/2013] [Indexed: 11/30/2022]
Abstract
Recently, it was demonstrated that colorectal cancer HT-29 cells can secrete epinephrine (adrenaline) in an autocrine manner to auto-stimulate cellular growth by adrenoreceptors activation, and that this secretion is enhanced by nicotine, showing an indirect relation between colorectal cancer and tobacco. The electrochemical behaviour of human colon adenocarcinoma HT-29 cells from a colorectal adenocarcinoma cell line, the hormone and neurotransmitter epinephrine, and nicotine, were investigated by cyclic voltammetry, using indium tin oxide (ITO), glassy carbon (GC) and screen printed carbon (SPC) electrodes. The oxidation of the HT-29 cells, previously grown onto ITO or SPC surfaces, followed an irreversible oxidation process that involved the formation of a main oxidation product that undergoes irreversible reduction, as in the epinephrine oxidation mechanism. The effect of nicotine stimulation of the HT-29 cells was also investigated. Nicotine, at different concentration levels 1, 2 and 15 mM, was introduced in the culture medium and an increase with incubation time, 0 to 3h and 30 min, of the HT-29 cells oxidation and reduction peaks was observed. The interaction of nicotine with the HT-29 cells stimulated the epinephrine secretion causing an increase in epinephrine release concentration, and enabling the conclusion that epinephrine and nicotine play an important role in the colorectal tumour growth.
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Affiliation(s)
- S C B Oliveira
- Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3004-535 Coimbra, Portugal
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Neeman E, Ben-Eliyahu S. Surgery and stress promote cancer metastasis: new outlooks on perioperative mediating mechanisms and immune involvement. Brain Behav Immun 2013; 30 Suppl:S32-40. [PMID: 22504092 PMCID: PMC3423506 DOI: 10.1016/j.bbi.2012.03.006] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 03/24/2012] [Indexed: 12/26/2022] Open
Abstract
Surgery for the removal of a primary tumor presents an opportunity to eradicate cancer or arrest its progression, but is also believed to promote the outbreak of pre-existing micrometastases and the initiation of new metastases. These deleterious effects of surgery are mediated through various mechanisms, including psychological and physiological neuroendocrine and paracrine stress responses elicited by surgery. In this review we (i) describe the many risk factors that arise during the perioperative period, acting synergistically to make this short timeframe critical for determining long-term cancer recurrence, (ii) present newly identified potent immunocyte populations that can destroy autologous tumor cells that were traditionally considered immune-resistant, thus invigorating the notion of immune-surveillance against cancer metastasis, (iii) describe in vivo evidence in cancer patients that support a role for anti-cancer immunity, (iv) indicate neuroendocrine and paracrine mediating mechanisms of stress- and surgery-induced promotion of cancer progression, focusing on the prominent role of catecholamines and prostaglandins through their impact on anti-cancer immunity, and through direct effects on the malignant tissue and its surrounding, (v) discuss the impact of different anesthetic approaches and other intra-operative procedures on immunity and cancer progression, and (vi) suggest prophylactic measures against the immunosuppressive and cancer promoting effects of surgery.
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Affiliation(s)
- Elad Neeman
- Neuroimmunology Research Unit, Department of Psychology, Tel Aviv University, Tel Aviv 69978, Israel
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Li S, Sun Y, Gao D. Role of the nervous system in cancer metastasis. Oncol Lett 2013; 5:1101-1111. [PMID: 23599747 PMCID: PMC3629128 DOI: 10.3892/ol.2013.1168] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 10/17/2012] [Indexed: 12/17/2022] Open
Abstract
The notion that tumors lack innervation was proposed several years ago. However, nerve fibers are irregulatedly found in some tumor tissues. Their terminals interaction with cancer cells are considered to be neuro-neoplastic synapses. Moreover, neural-related factors, which are important players in the development and activity of the nervous system, have been found in cancer cells. Thus, they establish a direct connection between the nervous system and tumor cells. They modulate the process of metastasis, including degradation of base membranes, cancer cell invasion, migration, extravasation and colonization. Peripheral nerve invasion provides another pathway for the spread of cancer cells when blood and lymphatic metastases are absent, which is based on the interactions between the microenvironments of nerve fibers and tumor cells. The nervous system also modulates angiogenesis, the tumor microenvironment, bone marrow, immune functions and inflammatory pathways to influence metastases. Denervation of the tumor has been reported to enhance cancer metastasis. Stress, social isolation and other emotional factors may increase distant metastasis through releasing hormones from the brain, the hypothalamic-pituitary-adrenal axis and autonomic nervous system. Disruption of circadian rhythms will also promote cancer metastasis through direct and indirect actions of the nervous system. Therefore, the nervous system plays an important role in cancer metastasis.
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Affiliation(s)
- Sha Li
- Department of Radiation Oncology, Lanzhou General Hospital of PLA, Lanzhou, Gansu 730050
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quốc Lu’o’ng KV, Nguyễn LTH. The roles of beta-adrenergic receptors in tumorigenesis and the possible use of beta-adrenergic blockers for cancer treatment: possible genetic and cell-signaling mechanisms. Cancer Manag Res 2012; 4:431-45. [PMID: 23293538 PMCID: PMC3534394 DOI: 10.2147/cmar.s39153] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cancer is the leading cause of death in the USA, and the incidence of cancer increases dramatically with age. Beta-adrenergic blockers appear to have a beneficial clinical effect in cancer patients. In this paper, we review the evidence of an association between β-adrenergic blockade and cancer. Genetic studies have provided the opportunity to determine which proteins link β-adrenergic blockade to cancer pathology. In particular, this link involves the major histocompatibility complex class II molecules, the renin-angiotensin system, transcription factor nuclear factor-kappa-light-chain-enhancer of activated B cells, poly(ADP-ribose) polymerase-1, vascular endothelial growth factor, and the reduced form of nicotinamide adenine dinucleotide phosphate oxidase. Beta-adrenergic blockers also exert anticancer effects through non-genomic factors, including matrix metalloproteinase, mitogen-activated protein kinase pathways, prostaglandins, cyclooxygenase-2, oxidative stress, and nitric oxide synthase. In conclusion, β-adrenergic blockade may play a beneficial role in cancer treatment. Additional investigations that examine β-adrenergic blockers as cancer therapeutics are required to further elucidate this role.
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McQuibban GA, Gong JH, Tam EM, McCulloch CA, Clark-Lewis I, Overall CM. Inflammation dampened by gelatinase A cleavage of monocyte chemoattractant protein-3. Crit Rev Biochem Mol Biol 2000; 48:222-72. [PMID: 10947989 DOI: 10.3109/10409238.2013.770819] [Citation(s) in RCA: 545] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tissue degradation by the matrix metalloproteinase gelatinase A is pivotal to inflammation and metastases. Recognizing the catalytic importance of substrate-binding exosites outside the catalytic domain, we screened for extracellular substrates using the gelatinase A hemopexin domain as bait in the yeast two-hybrid system. Monocyte chemoattractant protein-3 (MCP-3) was identified as a physiological substrate of gelatinase A. Cleaved MCP-3 binds to CC-chemokine receptors-1, -2, and -3, but no longer induces calcium fluxes or promotes chemotaxis, and instead acts as a general chemokine antagonist that dampens inflammation. This suggests that matrix metalloproteinases are both effectors and regulators of the inflammatory response.
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Affiliation(s)
- G A McQuibban
- Department of Biochemistry and Molecular Biology, Biomedical Research Centre, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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