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Liu S, Xu H, Feng Y, Kahlert UD, Du R, Torres-de la Roche LA, Xu K, Shi W, Meng F. Oxidative stress genes define two subtypes of triple-negative breast cancer with prognostic and therapeutic implications. Front Genet 2023; 14:1230911. [PMID: 37519893 PMCID: PMC10372428 DOI: 10.3389/fgene.2023.1230911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 06/30/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction: Oxidative stress (OS)-related genes have been confirmed to be closely related to the prognosis of triple-negative breast cancer (TNBC) patients; despite this fact, there is still a lack of TNBC subtype strategies based on this gene guidance. Here, we aimed to explore OS-related subtypes and their prognostic value in TNBC. Methods: Data from The Cancer Genome Atlas (TCGA)-TNBC and Sequence Read Archive (SRA) (SRR8518252) databases were collected, removing batch effects using a combat method before analysis. Consensus clustering analysis identified two OS subtypes (clusters A and B), with cluster A showing a better prognosis. Immune infiltration characteristics were analyzed using ESTIMATE and single-sample gene set enrichment analysis (ssGSEA) algorithms, revealing higher ImmuneScore and ESTIMATEscore in cluster A. Tumor-suppressive immune cells, human leukocyte antigen (HLA) genes, and three immune inhibitors were more prevalent in cluster A. Results: An eight-gene signature, derived from differentially expressed genes, was developed and validated as an independent risk factor for TNBC. A nomogram combining the risk score and clinical variables accurately predicted patient outcomes. Finally, we also validated the classification effect of subtypes using hub markers of each subtype in the test dataset. Conclusion: Our study reveals distinct molecular clusters based on OS-related genes to better clarify the reactive oxygen species (ROS)-mediated progression and the crosstalk between the ROS and tumor microenvironment (TME) in this heterogenetic disease, and construct a risk prognostic model which could provide more support for clinical treatment decisions.
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Affiliation(s)
- Shenting Liu
- Department of Oncology Medicine, Hainan Cancer Hospital, Haikou, Hainan, China
| | - He Xu
- Department of Thyroid and Breast Surgery, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou, China
| | - Ying Feng
- Department of Thyroid and Breast Surgery, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou, China
| | - Ulf D. Kahlert
- Molecular and Experimental Surgery, University Clinic for General- Visceral- Vascular- and Trans-Plantation Surgery, Medical Faculty University Hospital Magdeburg, Otto-von Guericke UniversityMagdeburg, Germany
| | - Renfei Du
- Molecular and Experimental Surgery, University Clinic for General- Visceral- Vascular- and Trans-Plantation Surgery, Medical Faculty University Hospital Magdeburg, Otto-von Guericke UniversityMagdeburg, Germany
| | - Luz Angela Torres-de la Roche
- University Hospital for Gynecology, Pius-Hospital, University Medicine Oldenburg, Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - Kai Xu
- Department of Thyroid and Breast Surgery, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou, China
| | - Wenjie Shi
- Molecular and Experimental Surgery, University Clinic for General- Visceral- Vascular- and Trans-Plantation Surgery, Medical Faculty University Hospital Magdeburg, Otto-von Guericke UniversityMagdeburg, Germany
| | - Fanshuai Meng
- Translational and Trauma Surgery Laboratory, University of Ulm, Ulm, Germany
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Karaman EF, Abudayyak M, Ozden S. The role of chromatin-modifying enzymes and histone modifications in the modulation of p16 gene in fumonisin B 1-induced toxicity in human kidney cells. Mycotoxin Res 2023:10.1007/s12550-023-00494-2. [PMID: 37328702 DOI: 10.1007/s12550-023-00494-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/18/2023]
Abstract
Fumonisin B1 (FB1) poses a risk to animal and human health. Although the effects of FB1 on sphingolipid metabolism are well documented, there are limited studies covering the epigenetic modifications and early molecular alterations associated with carcinogenesis pathways caused by FB1 nephrotoxicity. The present study investigates the effects of FB1 on global DNA methylation, chromatin-modifying enzymes, and histone modification levels of the p16 gene in human kidney cells (HK-2) after 24 h exposure. An increase (2.23-fold) in the levels of 5-methylcytosine (5-mC) at 100 µmol/L was observed, a change independent from the decrease in gene expression levels of DNA methyltransferase 1 (DNMT1) at 50 and 100 µmol/L; however, DNMT3a and DNMT3b were significantly upregulated at 100 µmol/L of FB1. Dose-dependent downregulation of chromatin-modifying genes was observed after FB1 exposure. In addition, chromatin immunoprecipitation results showed that 10 µmol/L of FB1 induced a significant decrease in H3K9ac, H3K9me3 and H3K27me3 modifications of p16, while 100 µmol/L of FB1 caused a significant increase in H3K27me3 levels of p16. Taken together, the results suggest that epigenetic mechanisms might play a role in FB1 carcinogenesis through DNA methylation, and histone and chromatin modifications.
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Affiliation(s)
- Ecem Fatma Karaman
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Biruni University, 34010, Topkapi, Istanbul, Turkey
| | - Mahmoud Abudayyak
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey
| | - Sibel Ozden
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey.
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LeVee A, Mortimer J. The Challenges of Treating Patients with Breast Cancer and Obesity. Cancers (Basel) 2023; 15:cancers15092526. [PMID: 37173991 PMCID: PMC10177120 DOI: 10.3390/cancers15092526] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Obesity is defined as a body mass index (BMI) of 30 kg/m2 or more and is associated with worse outcomes in patients with breast cancer, resulting in an increased incidence of breast cancer, recurrence, and death. The incidence of obesity is increasing, with almost half of all individuals in the United States classified as obese. Patients with obesity present with unique pharmacokinetics and physiology and are at increased risk of developing diabetes mellitus and cardiovascular disease, which leads to specific challenges when treating these patients. The aim of this review is to summarize the impact of obesity on the efficacy and toxicity of systemic therapies used for breast cancer patients, describe the molecular mechanisms through which obesity can affect systemic therapies, outline the existing American Society of Clinical Oncology (ASCO) guidelines for treating patients with cancer and obesity, and highlight additional clinical considerations for treating patients with obesity and breast cancer. We conclude that further research on the biological mechanisms underlying the obesity-breast cancer link may offer new treatment strategies, and clinicals trials that focus on the treatment and outcomes of patients with obesity and all stages of breast cancer are needed to inform future treatment guidelines.
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Affiliation(s)
- Alexis LeVee
- Department of Medical Oncology, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
| | - Joanne Mortimer
- Department of Medical Oncology, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA
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4
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Vitamin D deficiency: a potential risk factor for cancer in obesity? Int J Obes (Lond) 2022; 46:707-717. [PMID: 35027681 DOI: 10.1038/s41366-021-01045-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/25/2021] [Accepted: 11/26/2021] [Indexed: 12/20/2022]
Abstract
Obesity is considered an abnormal or excessive accumulation of adipose tissue, due to a prolonged positive energy balance that arises when energy intake is greater than energy expenditure, leading to an increased risk for the individual health and for the development of metabolic chronic diseases including several different types of cancer. Vitamin D deficiency is a metabolic alteration, which is often associated with the obesity condition. Vitamin D is a liposoluble vitamin, which plays a pivotal role in calcium-phosphate metabolism but extraskeletal effects have also been described. Among these, it plays an important role also in adipocyte physiology and glucose metabolism, typically dysregulated in subjects affected by obesity. Moreover, it is now recognized that Vitamin D also influences the processes of cell proliferation, differentiation, adhesion potentially leading to carcinogenesis. Indeed, data indicate a potential link between vitamin D levels and cancer, and higher vitamin D concentrations have been associated with a lower risk of developing different kinds of tumors, including breast, colon, lymphoma, lung, and prostate cancers. Thus, this review will revise the literature regarding this issue investigating and highlighting the potential mechanism of action, which might lead to new therapeutical options.
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Barone I, Caruso A, Gelsomino L, Giordano C, Bonofiglio D, Catalano S, Andò S. Obesity and endocrine therapy resistance in breast cancer: Mechanistic insights and perspectives. Obes Rev 2022; 23:e13358. [PMID: 34559450 PMCID: PMC9285685 DOI: 10.1111/obr.13358] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/07/2021] [Accepted: 08/13/2021] [Indexed: 12/24/2022]
Abstract
The incidence of obesity, a recognized risk factor for various metabolic and chronic diseases, including numerous types of cancers, has risen dramatically over the recent decades worldwide. To date, convincing research in this area has painted a complex picture about the adverse impact of high body adiposity on breast cancer onset and progression. However, an emerging but overlooked issue of clinical significance is the limited efficacy of the conventional endocrine therapies with selective estrogen receptor modulators (SERMs) or degraders (SERDs) and aromatase inhibitors (AIs) in patients affected by breast cancer and obesity. The mechanisms behind the interplay between obesity and endocrine therapy resistance are likely to be multifactorial. Therefore, what have we actually learned during these years and which are the main challenges in the field? In this review, we will critically discuss the epidemiological evidence linking obesity to endocrine therapeutic responses and we will outline the molecular players involved in this harmful connection. Given the escalating global epidemic of obesity, advances in understanding this critical node will offer new precision medicine-based therapeutic interventions and more appropriate dosing schedule for treating patients affected by obesity and with breast tumors resistant to endocrine therapies.
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Affiliation(s)
- Ines Barone
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Amanda Caruso
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Luca Gelsomino
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Cinzia Giordano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Daniela Bonofiglio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Stefania Catalano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
| | - Sebastiano Andò
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Arcavacata di Rende, Cosenza, Italy
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Attah OC, Umar IA, Ameh DA, Forcados GE, Muhammad A, Sani I. Kolaviron pre-treatment suppresses 7, 12 dimethylbenzanthracene-induced alterations in estrogen receptor-α, CYP 1A1, oxidative stress and inflammation in female Wistar rats. J Food Biochem 2021; 46:e13984. [PMID: 34936107 DOI: 10.1111/jfbc.13984] [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: 08/27/2021] [Revised: 10/04/2021] [Accepted: 10/17/2021] [Indexed: 11/30/2022]
Abstract
Due to the need to develop locally available, cheaper, and efficacious treatment regimens for breast cancer, the chemopreventive effect of kolaviron (KV), an extract of Garcinia kola seeds was examined. Fifty (50) female Wistar rats (120-180 g) were assigned to five groups (control group, 7, 12 dimethylbenzanthracene [DMBA] groups, tamoxifen group) of 10 rats each. They were pre-treated with KV thrice a week for four weeks except control. Estrogen receptor-α (ER-α) levels were determined in the pre-treated rats before induction of mammary carcinogenesis. After the four weeks pre-treatment period, 80 mg/kg of DMBA was used for induction. A hundred and fifty (150) days after induction, the rats were sacrificed humanely. Significantly higher levels of ER-α, formation of lobular neoplastic cells, epithelial hyperplasia, lymphocyte infiltration, increased cytokines (interleukin-6 [IL-6] and tumor necrosis factor-α [TNF-α]), CYP1A1 activity and malondialdehyde (MDA) with a corresponding decrease in superoxide dismutase (SOD), catalase and glutathione peroxidase were observed in DMBA-induced rats. Pre-treatment with KV at 200 mg/kg body weight significantly (p < .05) decreased ER-α levels by 19.01% and 37.52%, [IL-6] by 36.37% and 20.55%, TNF-α by 42.2% and 12.33% in serum and mammary tissue respectively. Also, a significant (p < .05) decrease in serum CYP1A1 activity, MDA with concomitant increase in SOD, catalase and glutathione peroxidase activities were observed in serum and mammary tissue respectively. Collectively, the results suggest that KV could be further explored in targeting chemoprevention of DMBA-induced mammary damage. PRACTICAL APPLICATIONS: Garcinia kola is widely cultivated in West and Central Africa with kolaviron (KV) as its major constituents. The seeds which have a bitter astringent taste are widely consumed by people in the region. Locals claim that consumption of the seeds provides relief for the management of several ailments including cancer. However, scientific investigations that provide a basis for these claims are still needed. This study provides evidence that points to the ameliorative potential of KV on breast cancer model. The results will be beneficial to local communities who hitherto had no knowledge on the potential of G. kola in chemoprevention. The results from this study will also attract further research attention from the international scientific community to examine the anti-cancer benefits of G. kola. This will also be beneficial to the global community due to the increasing number of breast cancer cases recorded annually.
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Affiliation(s)
- O C Attah
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - I A Umar
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - D A Ameh
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - G E Forcados
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - A Muhammad
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - I Sani
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria
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7
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García-Giménez JL, Garcés C, Romá-Mateo C, Pallardó FV. Oxidative stress-mediated alterations in histone post-translational modifications. Free Radic Biol Med 2021; 170:6-18. [PMID: 33689846 DOI: 10.1016/j.freeradbiomed.2021.02.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 12/15/2022]
Abstract
Epigenetic regulation of gene expression provides a finely tuned response capacity for cells when undergoing environmental changes. However, in the context of human physiology or disease, any cellular imbalance that modulates homeostasis has the potential to trigger molecular changes that result either in physiological adaptation to a new situation or pathological conditions. These effects are partly due to alterations in the functionality of epigenetic regulators, which cause long-term and often heritable changes in cell lineages. As such, free radicals resulting from unbalanced/extended oxidative stress have been proved to act as modulators of epigenetic agents, resulting in alterations of the epigenetic landscape. In the present review we will focus on the particular effect that oxidative stress and free radicals produce in histone post-translational modifications that contribute to altering the histone code and, consequently, gene expression. The pathological consequences of the changes in this epigenetic layer of regulation of gene expression are thoroughly evidenced by data gathered in many physiological adaptive processes and in human diseases that range from age-related neurodegenerative pathologies to cancer, and that include respiratory syndromes, infertility, and systemic inflammatory conditions like sepsis.
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Affiliation(s)
- José-Luis García-Giménez
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Concepción Garcés
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain
| | - Carlos Romá-Mateo
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Federico V Pallardó
- Department of Physiology, Faculty of Medicine and Dentistry. University of Valencia- INCLIVA, Valencia, 46010, Spain; Associated Unit for Rare Diseases INCLIVA-CIPF, Valencia, Spain; CIBER de Enfermedades Raras (CIBERER), Valencia, Spain.
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8
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Collins JM, Wang D. Co-expression of drug metabolizing cytochrome P450 enzymes and estrogen receptor alpha (ESR1) in human liver: racial differences and the regulatory role of ESR1. Drug Metab Pers Ther 2021; 36:205-214. [PMID: 33823094 DOI: 10.1515/dmpt-2020-0160] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/03/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVES The function and expression of cytochrome P450 (CYP) drug metabolizing enzymes is highly variable, greatly affecting drug exposure, and therapeutic outcomes. The expression of these enzymes is known to be controlled by many transcription factors (TFs), including ligand-free estrogen receptor alpha (ESR1, in the absence of estrogen). However, the relationship between the expression of ESR1, other TFs, and CYP enzymes in human liver is still unclear. METHODS Using real-time PCR, we quantified the mRNA levels of 12 CYP enzymes and nine TFs in 246 human liver samples from European American (EA, n = 133) and African American (AA, n = 113) donors. RESULTS Our results showed higher expression levels of ESR1 and six CYP enzymes in EA than in AA. Partial least square regression analysis showed that ESR1 is the top-ranking TF associating with the expression of eight CYP enzymes, six of which showed racial difference in expression. Conversely, four CYP enzymes without racial difference in expression did not have ESR1 as a top-ranking TF. These results indicate that ESR1 may contribute to variation in CYP enzyme expression between these two ancestral backgrounds. CONCLUSIONS These results are consistent with our previous study showing ESR1 as a master regulator for the expression of several CYP enzymes. Therefore, factors affecting ESR1 expression may have broad influence on drug metabolism through altered expression of CYP enzymes.
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Affiliation(s)
- Joseph M Collins
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Danxin Wang
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, FL, USA
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Salvati A, Gigantino V, Nassa G, Mirici Cappa V, Ventola GM, Cracas DGC, Mastrocinque R, Rizzo F, Tarallo R, Weisz A, Giurato G. Global View of Candidate Therapeutic Target Genes in Hormone-Responsive Breast Cancer. Int J Mol Sci 2020; 21:ijms21114068. [PMID: 32517194 PMCID: PMC7312026 DOI: 10.3390/ijms21114068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 12/17/2022] Open
Abstract
Breast cancer (BC) is a heterogeneous disease characterized by different biopathological features, differential response to therapy and substantial variability in long-term-survival. BC heterogeneity recapitulates genetic and epigenetic alterations affecting transformed cell behavior. The estrogen receptor alpha positive (ERα+) is the most common BC subtype, generally associated with a better prognosis and improved long-term survival, when compared to ERα-tumors. This is mainly due to the efficacy of endocrine therapy, that interfering with estrogen biosynthesis and actions blocks ER-mediated cell proliferation and tumor spread. Acquired resistance to endocrine therapy, however, represents a great challenge in the clinical management of ERα+ BC, causing tumor growth and recurrence irrespective of estrogen blockade. Improving overall survival in such cases requires new and effective anticancer drugs, allowing adjuvant treatments able to overcome resistance to first-line endocrine therapy. To date, several studies focus on the application of loss-of-function genome-wide screenings to identify key (hub) “fitness” genes essential for BC progression and representing candidate drug targets to overcome lack of response, or acquired resistance, to current therapies. Here, we review the biological significance of essential genes and relative functional pathways affected in ERα+ BC, most of which are strictly interconnected with each other and represent potential effective targets for novel molecular therapies.
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Affiliation(s)
- Annamaria Salvati
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | - Valerio Gigantino
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | - Giovanni Nassa
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | - Valeria Mirici Cappa
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | | | | | | | - Francesca Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | - Roberta Tarallo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
| | - Alessandro Weisz
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
- CRGS—Genome Research Center for Health, University of Salerno Campus of Medicine, 84081 Baronissi (SA), Italy
- Correspondence: (A.W.); (G.G.); Tel.: +39-089-965043 (A.W.); +39-089-968286 (G.G.)
| | - Giorgio Giurato
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry ‘Scuola Medica Salernitana’, University of Salerno, 84081 Baronissi (SA), Italy; (A.S.); (V.G.); (G.N.); (V.M.C.); (F.R.); (R.T.)
- Correspondence: (A.W.); (G.G.); Tel.: +39-089-965043 (A.W.); +39-089-968286 (G.G.)
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10
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Dayalan Naidu S, Dinkova-Kostova AT. KEAP1, a cysteine-based sensor and a drug target for the prevention and treatment of chronic disease. Open Biol 2020; 10:200105. [PMID: 32574549 PMCID: PMC7333886 DOI: 10.1098/rsob.200105] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/22/2020] [Indexed: 12/29/2022] Open
Abstract
Redox imbalance and persistent inflammation are the underlying causes of most chronic diseases. Mammalian cells have evolved elaborate mechanisms for restoring redox homeostasis and resolving acute inflammatory responses. One prominent mechanism is that of inducing the expression of antioxidant, anti-inflammatory and other cytoprotective proteins, while also suppressing the production of pro-inflammatory mediators, through the activation of transcription factor nuclear factor-erythroid 2 p45-related factor 2 (NRF2). At homeostatic conditions, NRF2 is a short-lived protein, which avidly binds to Kelch-like ECH-associated protein 1 (KEAP1). KEAP1 functions as (i) a substrate adaptor for a Cullin 3 (CUL3)-based E3 ubiquitin ligase that targets NRF2 for ubiquitination and proteasomal degradation, and (ii) a cysteine-based sensor for a myriad of physiological and pharmacological NRF2 activators. Here, we review the intricate molecular mechanisms by which KEAP1 senses electrophiles and oxidants. Chemical modification of specific cysteine sensors of KEAP1 results in loss of NRF2-repressor function and alterations in the expression of NRF2-target genes that encode large networks of diverse proteins, which collectively restore redox balance and resolve inflammation, thus ensuring a comprehensive cytoprotection. We focus on the cyclic cyanoenones, the most potent NRF2 activators, some of which are currently in clinical trials for various pathologies characterized by redox imbalance and inflammation.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Albena T. Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, UK
- Department of Pharmacology and Molecular Sciences and Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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11
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Ghosh P, Vidal C, Dey S, Zhang L. Mitochondria Targeting as an Effective Strategy for Cancer Therapy. Int J Mol Sci 2020; 21:E3363. [PMID: 32397535 PMCID: PMC7247703 DOI: 10.3390/ijms21093363] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/30/2020] [Accepted: 05/06/2020] [Indexed: 12/14/2022] Open
Abstract
Mitochondria are well known for their role in ATP production and biosynthesis of macromolecules. Importantly, increasing experimental evidence points to the roles of mitochondrial bioenergetics, dynamics, and signaling in tumorigenesis. Recent studies have shown that many types of cancer cells, including metastatic tumor cells, therapy-resistant tumor cells, and cancer stem cells, are reliant on mitochondrial respiration, and upregulate oxidative phosphorylation (OXPHOS) activity to fuel tumorigenesis. Mitochondrial metabolism is crucial for tumor proliferation, tumor survival, and metastasis. Mitochondrial OXPHOS dependency of cancer has been shown to underlie the development of resistance to chemotherapy and radiotherapy. Furthermore, recent studies have demonstrated that elevated heme synthesis and uptake leads to intensified mitochondrial respiration and ATP generation, thereby promoting tumorigenic functions in non-small cell lung cancer (NSCLC) cells. Also, lowering heme uptake/synthesis inhibits mitochondrial OXPHOS and effectively reduces oxygen consumption, thereby inhibiting cancer cell proliferation, migration, and tumor growth in NSCLC. Besides metabolic changes, mitochondrial dynamics such as fission and fusion are also altered in cancer cells. These alterations render mitochondria a vulnerable target for cancer therapy. This review summarizes recent advances in the understanding of mitochondrial alterations in cancer cells that contribute to tumorigenesis and the development of drug resistance. It highlights novel approaches involving mitochondria targeting in cancer therapy.
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Affiliation(s)
| | | | | | - Li Zhang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX 75080, USA; (P.G.); (C.V.); (S.D.)
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Trilla-Fuertes L, Gámez-Pozo A, Díaz-Almirón M, Prado-Vázquez G, Zapater-Moros A, López-Vacas R, Nanni P, Zamora P, Espinosa E, Fresno Vara JÁ. Computational metabolism modeling predicts risk of distant relapse-free survival in breast cancer patients. Future Oncol 2019; 15:3483-3490. [PMID: 31580166 DOI: 10.2217/fon-2018-0698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Aim: Differences in metabolism among breast cancer subtypes suggest that metabolism plays an important role in this disease. Flux balance analysis is used to explore these differences as well as drug response. Materials & methods: Proteomics data from breast tumors were obtained by mass-spectrometry. Flux balance analysis was performed to study metabolic networks. Flux activities from metabolic pathways were calculated and used to build prognostic models. Results: Flux activities of vitamin A, tetrahydrobiopterin and β-alanine metabolism pathways split our population into low- and high-risk patients. Additionally, flux activities of glycolysis and glutamate metabolism split triple negative tumors into low- and high-risk groups. Conclusion: Flux activities summarize flux balance analysis data and can be associated with prognosis in cancer.
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Affiliation(s)
| | - Angelo Gámez-Pozo
- Biomedica Molecular Medicine SL, C/ Faraday 7, Madrid 28049, Spain.,Molecular Oncology & Pathology Lab, Institute of Medical & Molecular Genetics-INGEMM, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain
| | - Mariana Díaz-Almirón
- Biostatistics Unit, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain
| | | | - Andrea Zapater-Moros
- Molecular Oncology & Pathology Lab, Institute of Medical & Molecular Genetics-INGEMM, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain
| | - Rocío López-Vacas
- Molecular Oncology & Pathology Lab, Institute of Medical & Molecular Genetics-INGEMM, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain
| | - Paolo Nanni
- Functional Genomics Centre Zurich, University of Zurich/ETH Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Pilar Zamora
- Medical Oncology Service, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain.,Cátedra UAM-Amgen, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain.,Biomedical Research Networking Center on Oncology-CIBERONC, ISCIII, C/ Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Enrique Espinosa
- Medical Oncology Service, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain.,Cátedra UAM-Amgen, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain.,Biomedical Research Networking Center on Oncology-CIBERONC, ISCIII, C/ Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Juan Ángel Fresno Vara
- Molecular Oncology & Pathology Lab, Institute of Medical & Molecular Genetics-INGEMM, La Paz University Hospital-IdiPAZ, Paseo de la Castellana 261, Madrid 28046, Spain.,Biomedical Research Networking Center on Oncology-CIBERONC, ISCIII, C/ Melchor Fernández Almagro, 3, Madrid 28029, Spain
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Wang D, Lu R, Rempala G, Sadee W. Ligand-Free Estrogen Receptor α (ESR1) as Master Regulator for the Expression of CYP3A4 and Other Cytochrome P450 Enzymes in the Human Liver. Mol Pharmacol 2019; 96:430-440. [PMID: 31399483 PMCID: PMC6724575 DOI: 10.1124/mol.119.116897] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/01/2019] [Indexed: 12/25/2022] Open
Abstract
Cytochrome P450 3A4 isoform (CYP3A4) transcription is controlled by hepatic transcription factors (TFs), but how TFs dynamically interact remains uncertain. We hypothesize that several TFs form a regulatory network with nonlinear, dynamic, and hierarchical interactions. To resolve complex interactions, we have applied a computational approach for estimating Sobol's sensitivity indices (SSI) under generalized linear models to existing liver RNA expression microarray data (GSE9588) and RNA-seq data from genotype-tissue expression (GTEx), generating robust importance ranking of TF effects and interactions. The SSI-based analysis identified TFs and interacting TF pairs, triplets, and quadruplets involved in CYP3A4 expression. In addition to known CYP3A4 TFs, estrogen receptor α (ESR1) emerges as key TF with the strongest main effect and as the most frequently included TF interacting partner. Model predictions were validated using small interfering RNA (siRNA)/short hairpin RNA (shRNA) gene knockdown and clustered regularly interspaced short palindromic repeats (CRISPR)-mediated transcriptional activation of ESR1 in biliary epithelial Huh7 cells and human hepatocytes in the absence of estrogen. Moreover, ESR1 and known CYP3A4 TFs mutually regulate each other. Detectable in both male and female hepatocytes without added estrogen, the results demonstrate a role for unliganded ESR1 in CYP3A4 expression consistent with unliganded ESR1 signaling reported in other cell types. Added estrogen further enhances ESR1 effects. We propose a hierarchical regulatory network for CYP3A4 expression directed by ESR1 through self-regulation, cross regulation, and TF-TF interactions. We also demonstrate that ESR1 regulates the expression of other P450 enzymes, suggesting broad influence of ESR1 on xenobiotics metabolism in human liver. Further studies are required to understand the mechanisms underlying role of ESR1 in P450 regulation. SIGNIFICANCE STATEMENT: This study focuses on identifying key transcription factors and regulatory networks for CYP3A4, the main drug metabolizing enzymes in liver. We applied a new computational approach (Sobol's sensitivity analysis) to existing hepatic gene expression data to determine the role of transcription factors in regulating CYP3A4 expression, and used molecular genetics methods (siRNA/shRNA gene knockdown and CRISPR-mediated transcriptional activation) to test these interactions in life cells. This approach reveals a robust network of TFs, including their putative interactions and the relative impact of each interaction. We find that ESR1 serves as a key transcription factor function in regulating CYP3A4, and it appears to be acting at least in part in a ligand-free fashion.
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Affiliation(s)
- Danxin Wang
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, Florida (D.W.); Department of Clinical Sciences, Bioinformatics Core Facility, University of Texas Southwestern Medical Center, Dallas, Texas (R.L.); and Mathematical Bioscience Institute, (G.R.) and Center for Pharmacogenomics, Department of Cancer Biology and Genetics, College of Medicine (W.S.), Ohio State University, Columbus, Ohio
| | - Rong Lu
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, Florida (D.W.); Department of Clinical Sciences, Bioinformatics Core Facility, University of Texas Southwestern Medical Center, Dallas, Texas (R.L.); and Mathematical Bioscience Institute, (G.R.) and Center for Pharmacogenomics, Department of Cancer Biology and Genetics, College of Medicine (W.S.), Ohio State University, Columbus, Ohio
| | - Grzegorz Rempala
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, Florida (D.W.); Department of Clinical Sciences, Bioinformatics Core Facility, University of Texas Southwestern Medical Center, Dallas, Texas (R.L.); and Mathematical Bioscience Institute, (G.R.) and Center for Pharmacogenomics, Department of Cancer Biology and Genetics, College of Medicine (W.S.), Ohio State University, Columbus, Ohio
| | - Wolfgang Sadee
- Department of Pharmacotherapy and Translational Research, Center for Pharmacogenomics, College of Pharmacy, University of Florida, Gainesville, Florida (D.W.); Department of Clinical Sciences, Bioinformatics Core Facility, University of Texas Southwestern Medical Center, Dallas, Texas (R.L.); and Mathematical Bioscience Institute, (G.R.) and Center for Pharmacogenomics, Department of Cancer Biology and Genetics, College of Medicine (W.S.), Ohio State University, Columbus, Ohio
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14
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Shin B, Feser R, Nault B, Hunter S, Maiti S, Ugwuagbo KC, Majumder M. miR526b and miR655 Induce Oxidative Stress in Breast Cancer. Int J Mol Sci 2019; 20:ijms20164039. [PMID: 31430859 PMCID: PMC6720387 DOI: 10.3390/ijms20164039] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/12/2019] [Accepted: 08/15/2019] [Indexed: 12/28/2022] Open
Abstract
In eukaryotes, overproduction of reactive oxygen species (ROS) causes oxidative stress, which contributes to chronic inflammation and cancer. MicroRNAs (miRNAs) are small, endogenously produced RNAs that play a major role in cancer progression. We established that overexpression of miR526b/miR655 promotes aggressive breast cancer phenotypes. Here, we investigated the roles of miR526b/miR655 in oxidative stress in breast cancer using in vitro and in silico assays. miRNA-overexpression in MCF7 cells directly enhances ROS and superoxide (SO) production, detected with fluorescence assays. We found that cell-free conditioned media contain extracellular miR526b/miR655 and treatment with these miRNA-conditioned media causes overproduction of ROS/SO in MCF7 and primary cells (HUVECs). Thioredoxin Reductase 1 (TXNRD1) is an oxidoreductase that maintains ROS/SO concentration. Overexpression of TXNRD1 is associated with breast cancer progression. We observed that miR526b/miR655 overexpression upregulates TXNRD1 expression in MCF7 cells, and treatment with miRNA-conditioned media upregulates TXNRD1 in both MCF7 and HUVECs. Bioinformatic analysis identifies two negative regulators of TXNRD1, TCF21 and PBRM1, as direct targets of miR526b/miR655. We validated that TCF21 and PBRM1 were significantly downregulated with miRNA upregulation, establishing a link between miR526b/miR655 and TXNRD1. Finally, treatments with oxidative stress inducers such as H2O2 or miRNA-conditioned media showed an upregulation of miR526b/miR655 expression in MCF7 cells, indicating that oxidative stress also induces miRNA overexpression. This study establishes the dynamic functions of miR526b/miR655 in oxidative stress induction in breast cancer.
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Affiliation(s)
- Bonita Shin
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Riley Feser
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Braydon Nault
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Stephanie Hunter
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Sujit Maiti
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Kingsley Chukwunonso Ugwuagbo
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada
| | - Mousumi Majumder
- Department of Biology, Brandon University, 3rd Floor, John R. Brodie Science Centre, 270-18th Street, Brandon, MB R7A6A9, Canada.
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15
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Yüce Ö, Tepe D, Erel Ö. Impaired dynamic thiol/disulfide homeostasis in pubertal gynecomastia. Int J Adolesc Med Health 2018; 33:/j/ijamh.ahead-of-print/ijamh-2018-0062/ijamh-2018-0062.xml. [PMID: 30398973 DOI: 10.1515/ijamh-2018-0062] [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: 03/27/2018] [Accepted: 06/28/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND The aim of the study was to evaluate the dynamic thiol/disulfide homeostasis (TDH) with a new method in patients with pubertal gynecomastia and also to investigate the relationship between sex hormones. METHODS Thiol/disulfide homeostasis, involving native thiol (SH), disulfide (SS) and total thiol (SS + SH), was evaluated between 20 adolescent boys with gynecomastia in mid-puberty and 50 healthy adolescents, who were matched for age, body mass index (BMI) and pubertal stage. The correlations of total serum testosterone (TT) and estradiol (E2) levels with the oxidative parameters were also determined. RESULTS No significant difference was found between the total thiol, native thiol, disulfide/native thiol and disulfide/total thiol ratios of the patient and control groups. The mean disulfide concentrations, disulfide/native thiol and the disulfide/total thiol ratios were statistically significantly higher in the patient group than in the controls. A positive correlation was found between the E2 and native thiol levels, also there was a negative correlation between the E2 and disulfide levels. TT was negatively correlated with both native thiol and disulfide levels. All these did not statistically differ between the patients with unilateral and bilateral gynecomastia. CONCLUSIONS There was an impaired thiol/disulfide homeostasis in patients with pubertal gynecomastia. According to this result, we can postulate that oxidative stress may be an etiologic factor that contributes to initiation and/or progression of gynecomastia.
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Affiliation(s)
- Özge Yüce
- Department of Pediatric Endocrinology, Yenimahalle Training and Research Hospital, University of Yıldırım Beyazıt, Batıkent, Ankara, 06370, Turkey, Phone: +90-0505-9443311, Fax: +90-0312-5873775
| | - Derya Tepe
- Department of Pediatric Endocrinology, Yenimahalle Training and Research Hospital, University of Yıldırım Beyazıt, Batıkent, Ankara, Turkey
| | - Özcan Erel
- Department of Clinical Biochemistry, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
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16
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Dayalan Naidu S, Suzuki T, Yamamoto M, Fahey JW, Dinkova‐Kostova AT. Phenethyl Isothiocyanate, a Dual Activator of Transcription Factors NRF2 and HSF1. Mol Nutr Food Res 2018; 62:e1700908. [PMID: 29710398 PMCID: PMC6175120 DOI: 10.1002/mnfr.201700908] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/30/2018] [Indexed: 12/19/2022]
Abstract
Cruciferous vegetables are rich sources of glucosinolates which are the biogenic precursor molecules of isothiocyanates (ITCs). The relationship between the consumption of cruciferous vegetables and chemoprotection has been widely documented in epidemiological studies. Phenethyl isothiocyanate (PEITC) occurs as its glucosinolate precursor gluconasturtiin in the cruciferous vegetable watercress (Nasturtium officinale). PEITC has multiple biological effects, including activation of cytoprotective pathways, such as those mediated by the transcription factor nuclear factor erythroid 2 p45-related factor 2 (NRF2) and the transcription factor heat shock factor 1 (HSF1), and can cause changes in the epigenome. However, at high concentrations, PEITC leads to accumulation of reactive oxygen species and cytoskeletal changes, resulting in cytotoxicity. Underlying these activities is the sulfhydryl reactivity of PEITC with cysteine residues in its protein targets. This chemical reactivity highlights the critical importance of the dose of PEITC for achieving on-target selectivity, which should be carefully considered in the design of future clinical trials.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Takafumi Suzuki
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Masayuki Yamamoto
- Department of Medical BiochemistryTohoku University Graduate School of MedicineSendai980‐8575Japan
| | - Jed W. Fahey
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of International HealthCenter for Human NutritionJohns Hopkins University Bloomberg School of Public HealthBaltimoreMD21205USA
| | - Albena T. Dinkova‐Kostova
- Cullman Chemoprotection CenterJohns Hopkins UniversityBaltimoreMD21205USA
- Department of Pharmacology and Molecular SciencesJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of MedicineDivision of Clinical PharmacologyJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Jacqui Wood Cancer CentreDivision of Cancer ResearchSchool of MedicineUniversity of DundeeDundeeDD1 9SYScotlandUK
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17
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Quadros VA, Costa FV, Canzian J, Nogueira CW, Rosemberg DB. Modulatory role of conspecific alarm substance on aggression and brain monoamine oxidase activity in two zebrafish populations. Prog Neuropsychopharmacol Biol Psychiatry 2018; 86:322-330. [PMID: 29588212 DOI: 10.1016/j.pnpbp.2018.03.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/05/2018] [Accepted: 03/22/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Vanessa A Quadros
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil.
| | - Fabiano V Costa
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Julia Canzian
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Cristina W Nogueira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA 70458, USA.
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Abstract
Estrogens coordinate and integrate cellular metabolism and mitochondrial activities by direct and indirect mechanisms mediated by differential expression and localization of estrogen receptors (ER) in a cell-specific manner. Estrogens regulate transcription and cell signaling pathways that converge to stimulate mitochondrial function- including mitochondrial bioenergetics, mitochondrial fusion and fission, calcium homeostasis, and antioxidant defense against free radicals. Estrogens regulate nuclear gene transcription by binding and activating the classical genomic estrogen receptors α and β (ERα and ERβ) and by activating plasma membrane-associated mERα, mERβ, and G-protein coupled ER (GPER, GPER1). Localization of ERα and ERβ within mitochondria and in the mitochondrial membrane provides additional mechanisms of regulation. Here we review the mechanisms of rapid and longer-term effects of estrogens and selective ER modulators (SERMs, e.g., tamoxifen (TAM)) on mitochondrial biogenesis, morphology, and function including regulation of Nuclear Respiratory Factor-1 (NRF-1, NRF1) transcription. NRF-1 is a nuclear transcription factor that promotes transcription of mitochondrial transcription factor TFAM (mtDNA maintenance factorFA) which then regulates mtDNA-encoded genes. The nuclear effects of estrogens on gene expression directly controlling mitochondrial biogenesis, oxygen consumption, mtDNA transcription, and apoptosis are reviewed.
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Senyildiz M, Karaman EF, Bas SS, Pirincci PA, Ozden S. Effects of BPA on global DNA methylation and global histone 3 lysine modifications in SH-SY5Y cells: An epigenetic mechanism linking the regulation of chromatin modifiying genes. Toxicol In Vitro 2017; 44:313-321. [PMID: 28765096 DOI: 10.1016/j.tiv.2017.07.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 06/20/2017] [Accepted: 07/27/2017] [Indexed: 12/22/2022]
Abstract
Bisphenol A (BPA), an estrogenic endocrine disruptor, is widely used in the production of polycarbonate plastic and epoxy resins, resulting in high risk on human health. In present study we aimed to investigate the effects of BPA on global and gene specific DNA methylation, global histone modifications and regulation of chromatin modifiying enzymes in human neuroblastoma cells (SH-SY5Y). Cells were treated with BPA at 0.1, 1 and 10μM concentrations for 48 and 96h. IC50 value of BPA was determined as 183 and 129μM in SH-SY5Y cells after 24h by MTT and NRU tests, respectively. We observed significant alterations on the 5-mC% levels (1.3 fold) and 5-hmC% levels (1.67 fold) after 10μM of BPA for 96h. Significant decrease was identified in H3K9me3 and H3K9ac after 10μM of BPA for 96h while decrease was observed in H3K4me3 at 10μM of BPA for 48h. Alterations were observed in chromatin modifiying genes including G9a, EZH2, SETD8, SETD1A, HAT1, SIRT1, DNMT1, RIZ1 and Suv39h1 after 96h of BPA exposure. Taken together, this study suggests that BPA might modulate the epigenetic regulators which would be key molecular events in the toxicity of endocrine disrupting chemicals.
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Affiliation(s)
- Mine Senyildiz
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116-Beyazit, Istanbul, Turkey
| | - Ecem Fatma Karaman
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116-Beyazit, Istanbul, Turkey
| | - Serap Sancar Bas
- Department of Biology, Faculty of Science, Istanbul University, 34134-Vezneciler, Istanbul, Turkey
| | - Pelin Arda Pirincci
- Department of Biology, Faculty of Science, Istanbul University, 34134-Vezneciler, Istanbul, Turkey
| | - Sibel Ozden
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116-Beyazit, Istanbul, Turkey.
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Abstract
OBJECTIVE Several studies have demonstrated that abnormal glutathione peroxidases 1 (Gpx1) expression can influence the biological behavior of malignant cells. However, the roles of Gpx1 in laryngeal squamous cell carcinoma (LSCC) remain unknown. The purpose of this study is to analyze the Gpx1 expression and prognostic significance in LSCC patients. METHODS Gpx1 mRNA levels in laryngeal tissues were determined by qRT-PCR. Meanwhile, We examined the expression levels of Gpx1 protein in 140 primary tumor tissues and 28 cases of normal tissues by immunohistochemistry (IHC) analysis on tissue microarrays (TMA). RESULTS Our results revealed that the frequency of high Gpx1 was significantly higher in cancer tissue compared to normal surgical margins; Gpx1 expression correlated with clinical features and overall survival (OS). Gpx1 overexpression was significantly associated with lymph node metastasis (P=0.023) and TNM stage (P=0.008); Kaplan-Meier survival curves revealed that patients with high Gpx1 expression had worse prognoses than patients with low Gpx1 expression; By multivariate analysis, we revealed that high Gpx1 expression level (HR 2.101, 95%CI 1.011-4.367; P=0.047) was an independent prognostic factor of survival in LSCC patients. CONCLUSION We speculate that Gpx1 can be applied to predict the prognosis in LSCC patients.
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Triethylenetetramine Synergizes with Pharmacologic Ascorbic Acid in Hydrogen Peroxide Mediated Selective Toxicity to Breast Cancer Cell. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3481710. [PMID: 28280522 PMCID: PMC5320382 DOI: 10.1155/2017/3481710] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/05/2017] [Indexed: 12/29/2022]
Abstract
Breast cancer is characterized by overexpression of superoxide dismutase (SOD) and downregulation of catalase and more resistance to hydrogen peroxide (H2O2) than normal cells. Thus, relatively high H2O2 promotes breast cancer cell growth and proliferation. However, excessive intracellular H2O2 leads to death of breast cancer cells. In cancer cells, high level ascorbic acid (Asc) is able to be autoxidized and thus provides an electron to oxygen to generate H2O2. In the present study, we demonstrated that triethylenetetramine (TETA) enhances Asc autoxidation and thus elevates H2O2 production in MCF-7 cells. Furthermore, Asc/TETA combination significantly impaired cancer cell viability, while having much milder effects on normal cells, indicating Asc/TETA could be a promising therapy for breast cancer. Moreover, SOD1 and N-acetyl-L-cysteine failed to improve MCF-7 cells viability in the presence of Asc/TETA, while catalase significantly inhibited the cytotoxicity of Asc/TETA to breast cancer cells, strongly suggesting that the selective cytotoxicity of Asc/TETA to cancer cells is H2O2-dependent. In addition, Asc/TETA induces RAS/ERK downregulation in breast cancer cells. Animal studies confirmed that Asc/TETA effectively suppressed tumor growth in vivo. In conclusion, TETA synergizes pharmacologic Asc autoxidation and H2O2 overproduction in breast cancer cells, which suppresses RAS/ERK pathway and results in apoptosis.
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Forcados GE, James DB, Sallau AB, Muhammad A, Mabeta P. Oxidative Stress and Carcinogenesis: Potential of Phytochemicals in Breast Cancer Therapy. Nutr Cancer 2017; 69:365-374. [PMID: 28103111 DOI: 10.1080/01635581.2017.1267777] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Breast cancer remains a burden in both developed and developing countries, with higher mortality in developing countries. Attempts to eradicate cancer have not been successful despite the progress made in the development of more novel chemotherapeutic drugs. Reactive-oxygen-species-mediated oxidative stress is known to play a role in breast cancer pathogenesis via genetic and epigenetic modifications, resulting in uncontrolled cell proliferation. Phytochemicals could provide leads for the development of alternative therapeutic agents due to their antioxidant activity, as well as their ability to induce apoptosis in cancer cells. However, most of the studies carried out using in vitro models do not continue with further studies in estrogen-receptor-positive in vivo breast cancer models, or fail to examine the possible biochemical mechanisms of phytochemical-based amelioration. This review examines oxidative-stress-mediated carcinogenesis and the potential of phytochemicals as anticancer agents.
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Affiliation(s)
- Gilead Ebiegberi Forcados
- a Division of Biochemistry , National Veterinary Research Institute , Vom , Nigeria.,b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria.,c Department of Anatomy and Physiology , Faculty of Veterinary Sciences, University of Pretoria , Pretoria , South Africa
| | - Dorcas Bolanle James
- b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria
| | | | - Aliyu Muhammad
- b Department of Biochemistry , Faculty of Science, Ahmadu Bello University , Zaria , Nigeria
| | - Peace Mabeta
- c Department of Anatomy and Physiology , Faculty of Veterinary Sciences, University of Pretoria , Pretoria , South Africa
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Li W, Guo Y, Zhang C, Wu R, Yang AY, Gaspar J, Kong ANT. Dietary Phytochemicals and Cancer Chemoprevention: A Perspective on Oxidative Stress, Inflammation, and Epigenetics. Chem Res Toxicol 2016; 29:2071-2095. [PMID: 27989132 DOI: 10.1021/acs.chemrestox.6b00413] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oxidative stress occurs when cellular reactive oxygen species levels exceed the self-antioxidant capacity of the body. Oxidative stress induces many pathological changes, including inflammation and cancer. Chronic inflammation is believed to be strongly associated with the major stages of carcinogenesis. The nuclear factor erythroid 2-related factor 2 (Nrf2) pathway plays a crucial role in regulating oxidative stress and inflammation by manipulating key antioxidant and detoxification enzyme genes via the antioxidant response element. Many dietary phytochemicals with cancer chemopreventive properties, such as polyphenols, isothiocyanates, and triterpenoids, exert antioxidant and anti-inflammatory functions by activating the Nrf2 pathway. Furthermore, epigenetic changes, including DNA methylation, histone post-translational modifications, and miRNA-mediated post-transcriptional alterations, also lead to various carcinogenesis processes by suppressing cancer repressor gene transcription. Using epigenetic research tools, including next-generation sequencing technologies, many dietary phytochemicals are shown to modify and reverse aberrant epigenetic/epigenome changes, potentially leading to cancer prevention/treatment. Thus, the beneficial effects of dietary phytochemicals on cancer development warrant further investigation to provide additional impetus for clinical translational studies.
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Affiliation(s)
- Wenji Li
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Yue Guo
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Chengyue Zhang
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Renyi Wu
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Anne Yuqing Yang
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - John Gaspar
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Ah-Ng Tony Kong
- Center for Cancer Prevention Research, ‡Department of Pharmaceutics, §Graduate Program in Pharmaceutical Sciences, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey , Piscataway, New Jersey 08854, United States
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24
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Ferroni P, Santilli F, Cavaliere F, Simeone P, Costarelli L, Liani R, Tripaldi R, Riondino S, Roselli M, Davi G, Guadagni F. Oxidant stress as a major determinant of platelet activation in invasive breast cancer. Int J Cancer 2016; 140:696-704. [PMID: 27784132 DOI: 10.1002/ijc.30488] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 09/26/2016] [Accepted: 10/24/2016] [Indexed: 12/20/2022]
Abstract
The hypothesis that increased oxidative stress in breast cancer (BC) patients could induce enhanced lipid peroxidation, which, in turn, would contribute to platelet activation and poor clinical outcome is attractive. To address this issue, we investigated pre-surgical urinary 8-iso-prostaglandin (PG)F2α (marker of in vivo oxidative stress) and 11-dehydro-thromboxane (TX)B2 (marker of in vivo platelet activation) levels in patients with primary BC (n = 115) compared with control women paired for comorbidities and their association with patients' metabolic profile and clinical prognostic factors. The results obtained showed that presurgical urinary excretion of both biomarkers was enhanced in BC patients compared to controls and was associated with patients' estrogen receptor (ER) expression, but not HER2 status or Ki67 proliferation index. Accordingly, both urinary biomarkers were increased in patients with luminal-like BC molecular subtypes compared with triple negative or HER2-enriched tumors. ER status was an independent predictor of 8-iso-PGF2α urinary levels, which, in turn, significantly predicted 11-dehydro-TXB2 urinary levels together with disease stage and ER status. The prognostic value of 11-dehydro-TXB2 was then evaluated showing a significant correlation with BC pathological response to neoadjuvant treatment. Furthermore, among relapsing patients, those with elevated urinary biomarker levels were more likely to develop distant metastasis rather than local recurrence. In conclusion, we may speculate that enhanced oxidative stress due to estrogen-related mechanisms might cause a condition of persistent platelet activation capable of sustaining BC growth and progression through the release of bioactive stored molecules, ultimately contributing to tumor invasiveness. Further studies specifically addressing this hypothesis are presently needed.
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Affiliation(s)
- Patrizia Ferroni
- San Raffaele Roma Open University, Via di Val Cannuta 247, Rome, 00166, Italy.,Interinstitutional Multidisciplinary BioBank (BioBIM), IRCCS San Raffaele Pisana, Via di Val Cannuta 247, Rome, 00166, Italy
| | - Francesca Santilli
- Department of Medicine and Aging, and Center of Aging Science and Translational Medicine (CESI-Met), Via Colle dell'Ara, Chieti, 66013, Italy
| | - Francesco Cavaliere
- Department of Surgery, San Giovanni Hospital-Addolorata, Via dell'Amba Aradan 9, Rome, 00184, Italy
| | - Paola Simeone
- Department of Medicine and Aging, and Center of Aging Science and Translational Medicine (CESI-Met), Via Colle dell'Ara, Chieti, 66013, Italy
| | - Leopoldo Costarelli
- Department of Pathology, San Giovanni Hospital-Addolorata, Via dell'Amba Aradan 9, Rome, 00184, Italy
| | - Rossella Liani
- Department of Medicine and Aging, and Center of Aging Science and Translational Medicine (CESI-Met), Via Colle dell'Ara, Chieti, 66013, Italy
| | - Romina Tripaldi
- Department of Medicine and Aging, and Center of Aging Science and Translational Medicine (CESI-Met), Via Colle dell'Ara, Chieti, 66013, Italy
| | - Silvia Riondino
- Interinstitutional Multidisciplinary BioBank (BioBIM), IRCCS San Raffaele Pisana, Via di Val Cannuta 247, Rome, 00166, Italy.,Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Viale Oxford 81, Rome, 00133, Italy
| | - Mario Roselli
- Department of Systems Medicine, Medical Oncology, Tor Vergata Clinical Center, Tor Vergata University of Rome, Viale Oxford 81, Rome, 00133, Italy
| | - Giovanni Davi
- Department of Medicine and Aging, and Center of Aging Science and Translational Medicine (CESI-Met), Via Colle dell'Ara, Chieti, 66013, Italy
| | - Fiorella Guadagni
- San Raffaele Roma Open University, Via di Val Cannuta 247, Rome, 00166, Italy.,Interinstitutional Multidisciplinary BioBank (BioBIM), IRCCS San Raffaele Pisana, Via di Val Cannuta 247, Rome, 00166, Italy
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25
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Radde BN, Ivanova MM, Mai HX, Alizadeh-Rad N, Piell K, Van Hoose P, Cole MP, Muluhngwi P, Kalbfleisch TS, Rouchka EC, Hill BG, Klinge CM. Nuclear respiratory factor-1 and bioenergetics in tamoxifen-resistant breast cancer cells. Exp Cell Res 2016; 347:222-231. [PMID: 27515002 PMCID: PMC5011039 DOI: 10.1016/j.yexcr.2016.08.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/18/2016] [Accepted: 08/07/2016] [Indexed: 02/07/2023]
Abstract
Acquired tamoxifen (TAM) resistance is a significant clinical problem in treating patients with estrogen receptor α (ERα)+ breast cancer. We reported that ERα increases nuclear respiratory factor-1 (NRF-1), which regulates nuclear-encoded mitochondrial gene transcription, in MCF-7 breast cancer cells and NRF-1 knockdown stimulates apoptosis. Whether NRF-1 and target gene expression is altered in endocrine resistant breast cancer cells is unknown. We measured NRF-1and metabolic features in a cell model of progressive TAM-resistance. NRF-1 and its target mitochondrial transcription factor A (TFAM) were higher in TAM-resistant LCC2 and LCC9 cells than TAM-sensitive MCF-7 cells. Using extracellular flux assays we observed that LCC1, LCC2, and LCC9 cells showed similar oxygen consumption rate (OCR), but lower mitochondrial reserve capacity which was correlated with lower Succinate Dehydrogenase Complex, Subunit B in LCC1 and LCC2 cells. Complex III activity was lower in LCC9 than MCF-7 cells. LCC1, LCC2, and LCC9 cells had higher basal extracellular acidification (ECAR), indicating higher aerobic glycolysis, relative to MCF-7 cells. Mitochondrial bioenergetic responses to estradiol and 4-hydroxytamoxifen were reduced in the endocrine-resistant cells compared to MCF-7 cells. These results suggest the acquisition of altered metabolic phenotypes in response to long term antiestrogen treatment may increase vulnerability to metabolic stress.
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Affiliation(s)
- Brandie N Radde
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Margarita M Ivanova
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Huy Xuan Mai
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Negin Alizadeh-Rad
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Kellianne Piell
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Patrick Van Hoose
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Marsha P Cole
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Penn Muluhngwi
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Ted S Kalbfleisch
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Eric C Rouchka
- Bioinformatics and Biomedical Computing Laboratory, Department of Computer Engineering and Computer Science, University of Louisville, Louisville, KY 40292, USA
| | - Bradford G Hill
- Department of Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA
| | - Carolyn M Klinge
- Department of Biochemistry & Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY 40292, USA.
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26
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Hirko KA, Fortner RT, Hankinson SE, Wu T, Eliassen AH. Plasma fluorescent oxidation products and risk of estrogen receptor-negative breast cancer in the Nurses' Health Study and Nurses' Health Study II. Breast Cancer Res Treat 2016; 158:149-155. [PMID: 27294610 PMCID: PMC5082691 DOI: 10.1007/s10549-016-3861-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 06/07/2016] [Indexed: 12/15/2022]
Abstract
Findings from epidemiologic studies of oxidative stress biomarkers and breast cancer have been mixed, although no studies have focused on estrogen receptor-negative (ER-) tumors which may be more strongly associated with oxidative stress. We examined prediagnostic plasma fluorescent oxidation products (FlOP), a global biomarker of oxidative stress, and risk of ER- breast cancer in a nested case-control study in the Nurses' Health Study and Nurses' Health Study II. ER- breast cancer cases (n = 355) were matched to 355 controls on age, month/time of day of blood collection, fasting status, menopausal status, and menopausal hormone use. Conditional logistic regression models were used to examine associations of plasma FlOP at three emission wavelengths (FlOP_360, FlOP_320, and FlOP_400) and risk of ER- breast cancer. We did not observe any significant associations between FlOP measures and risk of ER- breast cancer overall; the RRQ4vsQ1 (95 %CI) 0.70 (0.43-1.13), p trend = 0.09 for FlOP_360; 0.91(0.56-1.46), p trend = 0.93 for FlOP_320; and 0.62 (0.37-1.03), p trend = 0.10 for FlOP_400. Results were similar in models additionally adjusted for total carotenoid levels and in models stratified by age and total carotenoids. Although high (vs. low) levels of FIOP_360 and FIOP_400 were associated with lower risk of ER- breast cancer in lean women (body mass index (BMI) < 25 kg/m(2)) but not in overweight/obese women, these differences were not statistically significant (pint = 0.23 for FlOP_360; pint = 0.37 for FlOP_400). Our findings suggest that positive associations of plasma FlOP concentrations and ER- breast cancer risk are unlikely.
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Affiliation(s)
- Kelly A Hirko
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, 909 Fee Road, East Lansing, MI, 48824, USA.
| | - Renée T Fortner
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Susan E Hankinson
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Biostatistics and Epidemiology, University of Massachusetts, Amherst, MA, USA
| | - Tianying Wu
- Division of Biostatistics and Epidemiology Department of Environmental Health, University of Cincinnati, Cincinnati, OH, USA
| | - A Heather Eliassen
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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27
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Bak MJ, Das Gupta S, Wahler J, Suh N. Role of dietary bioactive natural products in estrogen receptor-positive breast cancer. Semin Cancer Biol 2016; 40-41:170-191. [PMID: 27016037 DOI: 10.1016/j.semcancer.2016.03.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 03/16/2016] [Accepted: 03/20/2016] [Indexed: 12/20/2022]
Abstract
Estrogen receptor (ER)-positive breast cancer, including luminal-A and -B, is the most common type of breast cancer. Extended exposure to estrogen is associated with an increased risk of breast cancer. Both ER-dependent and ER-independent mechanisms have been implicated in estrogen-mediated carcinogenesis. The ER-dependent pathway involves cell growth and proliferation triggered by the binding of estrogen to the ER. The ER-independent mechanisms depend on the metabolism of estrogen to generate genotoxic metabolites, free radicals and reactive oxygen species to induce breast cancer. A better understanding of the mechanisms that drive ER-positive breast cancer will help optimize targeted approaches to prevent or treat breast cancer. A growing emphasis is being placed on alternative medicine and dietary approaches toward the prevention and treatment of breast cancer. Many natural products and bioactive compounds found in foods have been shown to inhibit breast carcinogenesis via inhibition of estrogen induced oxidative stress as well as ER signaling. This review summarizes the role of bioactive natural products that are involved in the prevention and treatment of estrogen-related and ER-positive breast cancer.
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Affiliation(s)
- Min Ji Bak
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Soumyasri Das Gupta
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Joseph Wahler
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Nanjoo Suh
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA.
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28
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A Bowman-Birk inhibitor induces apoptosis in human breast adenocarcinoma through mitochondrial impairment and oxidative damage following proteasome 20S inhibition. Cell Death Discov 2016; 2:15067. [PMID: 27551492 PMCID: PMC4979482 DOI: 10.1038/cddiscovery.2015.67] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/19/2015] [Accepted: 12/03/2015] [Indexed: 12/29/2022] Open
Abstract
Proteasome inhibitors are emerging as a new class of chemopreventive agents and have gained huge importance as potential pharmacological tools in breast cancer treatment. Improved understanding of the role played by proteases and their specific inhibitors in humans offers novel and challenging opportunities for preventive and therapeutic intervention. In this study, we demonstrated that the Bowman-Birk protease inhibitor from Vigna unguiculata seeds, named black-eyed pea trypsin/chymotrypsin Inhibitor (BTCI), potently suppresses human breast adenocarcinoma cell viability by inhibiting the activity of proteasome 20S. BTCI induced a negative growth effect against a panel of breast cancer cells, with a concomitant cytostatic effect at the G2/M phase of the cell cycle and an increase in apoptosis, as observed by an augmented number of cells at the sub-G1 phase and annexin V-fluorescin isothiocyanate (FITC)/propidium iodide (PI) staining. In contrast, BTCI exhibited no cytotoxic effect on normal mammary epithelial cells. Moreover, the increased levels of intracellular reactive oxygen species (ROS) and changes in the mitochondrial membrane potential in cells treated with BTCI indicated mitochondrial damage as a crucial cellular event responsible for the apoptotic process. The higher activity of caspase in tumoral cells treated with BTCI in comparison with untreated cells suggests that BTCI induces apoptosis in a caspase-dependent manner. BTCI affected NF-kB target gene expression in both non invasive and invasive breast cancer cell lines, with the effect highly pronounced in the invasive cells. An increased expression of interleukin-8 (IL-8) in both cell lines was also observed. Taken together, these results suggest that BTCI promotes apoptosis through ROS-induced mitochondrial damage following proteasome inhibition. These findings highlight the pharmacological potential and benefit of BTCI in breast cancer treatment.
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29
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The role of oxidative stress on breast cancer development and therapy. Tumour Biol 2016; 37:4281-91. [PMID: 26815507 DOI: 10.1007/s13277-016-4873-9] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/15/2016] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are produced by both enzymatic and non-enzymatic systems within eukaryotic cells and play important roles in cellular physiology and pathophysiology. Although physiological concentrations are crucial for ensuring cell survival, ROS overproduction is detrimental to cells, and considered key-factors for the development of several diseases, such as neurodegenerative diseases, cardiovascular disorders, and cancer. Cancer cells are usually submitted to higher ROS levels that further stimulate malignant phenotype through stimulus to sustained proliferation, death evasion, angiogenesis, invasiveness, and metastasis. The role of ROS on breast cancer etiology and progression is being progressively elucidated. However, less attention has been given to the development of redox system-targeted strategies for breast cancer therapy. In this review, we address the basic mechanisms of ROS production and scavenging in breast tumor cells, and the emerging possibilities of breast cancer therapies targeting ROS homeostasis.
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