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Obermayr E, Mohr T, Schuster E, Braicu EI, Taube E, Sehouli J, Vergote I, Pujade-Lauraine E, Ray-Coquard I, Harter P, Wimberger P, Joly-Lobbedez F, Mahner S, Moll UM, Concin N, Zeillinger R. Gene expression markers in peripheral blood and outcome in patients with platinum-resistant ovarian cancer: A study of the European GANNET53 consortium. Int J Cancer 2024; 155:1128-1138. [PMID: 38676430 DOI: 10.1002/ijc.34978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 03/01/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024]
Abstract
Disease progression is a major problem in ovarian cancer. There are very few treatment options for patients with platinum-resistant ovarian cancer (PROC), and therefore, these patients have a particularly poor prognosis. The aim of the present study was to identify markers for monitoring the response of 123 PROC patients enrolled in the Phase I/II GANNET53 clinical trial, which evaluated the efficacy of Ganetespib in combination with standard chemotherapy versus standard chemotherapy alone. In total, 474 blood samples were collected, comprising baseline samples taken before the first administration of the study drugs and serial samples taken during treatment until further disease progression (PD). After microfluidic enrichment, 27 gene transcripts were analyzed using quantitative polymerase chain reaction and their utility for disease monitoring was evaluated. At baseline, ERCC1 was associated with an increased risk of PD (hazard ratio [HR] 1.75, 95% confidence interval [CI]: 1.20-2.55; p = 0.005), while baseline CDH1 and ESR1 may have a risk-reducing effect (CDH1 HR 0.66, 95% CI: 0.46-0.96; p = 0.024; ESR1 HR 0.58, 95% CI: 0.39-0.86; p = 0.002). ERCC1 was observed significantly more often (72.7% vs. 53.9%; p = 0.032) and ESR1 significantly less frequently (59.1% vs. 78.3%; p = 0.018) in blood samples taken at radiologically confirmed PD than at controlled disease. At any time during treatment, ERCC1-presence and ESR1-absence were associated with short PFS and with higher odds of PD within 6 months (odds ratio 12.77, 95% CI: 4.08-39.97; p < 0.001). Our study demonstrates the clinical relevance of ESR1 and ERCC1 and may encourage the analysis of liquid biopsy samples for the management of PROC patients.
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Affiliation(s)
- Eva Obermayr
- Molecular Oncology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Thomas Mohr
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Eva Schuster
- Molecular Oncology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Elena Ioana Braicu
- Department of Gynecology, European Competence Center for Ovarian Cancer, Campus 3 Virchow Klinikum, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Eliane Taube
- Institute of Pathology, Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jalid Sehouli
- Department of Gynecology, European Competence Center for Ovarian Cancer, Campus 3 Virchow Klinikum, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Ignace Vergote
- Division of Gynecological Oncology, Department of Obstetrics and Gynecology, Leuven Cancer Institute, University Hospitals Leuven, Katholieke Universiteit Leuven, Leuven, Belgium
| | | | - Isabelle Ray-Coquard
- Centre Anticancereux Léon Bérard, University Claude Bernard Lyon, GINECO Group, Lyon, France
| | - Philipp Harter
- Department of Gyneacologic Oncology, Kliniken Essen Mitte, Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
| | - Pauline Wimberger
- Department of Gynecology and Obstetrics, Technische Universität Dresden, Dresden, Germany and National Center for Tumor Diseases (NCT/UCC), Dresden, Germany
| | | | - Sven Mahner
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, AGO, Hamburg, Germany
| | - Ute Martha Moll
- Universitätsmedizin Göttingen, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Nicole Concin
- Department of Obstetrics and Gynecology, Innsbruck Medical University, Innsbruck, Austria
| | - Robert Zeillinger
- Molecular Oncology Group, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
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Suba Z. DNA Damage Responses in Tumors Are Not Proliferative Stimuli, but Rather They Are DNA Repair Actions Requiring Supportive Medical Care. Cancers (Basel) 2024; 16:1573. [PMID: 38672654 PMCID: PMC11049279 DOI: 10.3390/cancers16081573] [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: 03/05/2024] [Revised: 04/05/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND In tumors, somatic mutagenesis presumably drives the DNA damage response (DDR) via altered regulatory pathways, increasing genomic instability and proliferative activity. These considerations led to the standard therapeutic strategy against cancer: the disruption of mutation-activated DNA repair pathways of tumors. PURPOSE Justifying that cancer cells are not enemies to be killed, but rather that they are ill human cells which have the remnants of physiologic regulatory pathways. RESULTS 1. Genomic instability and cancer development may be originated from a flaw in estrogen signaling rather than excessive estrogen signaling; 2. Healthy cells with genomic instability exhibit somatic mutations, helping DNA restitution; 3. Somatic mutations in tumor cells aim for the restoration of DNA damage, rather than further genomic derangement; 4. In tumors, estrogen signaling drives the pathways of DNA stabilization, leading to apoptotic death; 5. In peritumoral cellular infiltration, the genomic damage of the tumor induces inflammatory cytokine secretion and increased estrogen synthesis. In the inflammatory cells, an increased growth factor receptor (GFR) signaling confers the unliganded activation of estrogen receptors (ERs); 6. In breast cancer cells responsive to genotoxic therapy, constitutive mutations help the upregulation of estrogen signaling and consequential apoptosis. In breast tumors non-responsive to genotoxic therapy, the possibilities for ER activation via either liganded or unliganded pathways are exhausted, leading to farther genomic instability and unrestrained proliferation. CONCLUSIONS Understanding the real character and behavior of human tumors at the molecular level suggests that we should learn the genome repairing methods of tumors and follow them by supportive therapy, rather than provoking additional genomic damages.
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Affiliation(s)
- Zsuzsanna Suba
- Department of Molecular Pathology, National Institute of Oncology, Ráth György Str. 7-9, H-1122 Budapest, Hungary
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Wagner MA, Koleck TA, Conway A, Bender CM, Conley YP. Variability of DNA Repair and Oxidative Stress Genes Associated with Worst Pain in Breast Cancer Survivors on Aromatase Inhibitors. Genes (Basel) 2023; 14:2031. [PMID: 38002974 PMCID: PMC10671149 DOI: 10.3390/genes14112031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/24/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Pain is a problem affecting women with breast cancer (HR+BrCa) receiving aromatase inhibitor (AI) therapy. We investigated the relationship between single-nucleotide polymorphisms (SNPs) in DNA repair and oxidative stress genes and perceived worst pain after 6 months of AI therapy. We explored 39 SNPs in genes involved in DNA repair (ERCC2, ERCC3, ERCC5, and PARP1) and oxidative stress (CAT, GPX1, SEPP1, SOD1, and SOD2) in women with HR+BrCa receiving adjuvant therapy (AI ± chemotherapy; n = 138). Pain was assessed via the Brief Pain Inventory. Hurdle regression was used to evaluate the relationship between each associated allele and (1) the probability of pain and (2) the severity of worst pain. ERCC2rs50872 and ERCC5rs11069498 were associated with the probability of pain and had a significant genetic risk score (GRS) model (p = 0.003). ERCC2rs50872, ERCC5rs11069498, ERCC5rs4771436, ERCC5rs4150360, PARP1rs3219058, and SEPP1rs230819 were associated with the severity of worst pain, with a significant GRS model (conditional mean estimate = 0.45; 95% CI = 0.29, 0.60; p < 0.001). These results suggest DNA repair and oxidative stress pathways may play a role in the probability of pain and the severity of worst pain. As healthcare delivery moves towards the model of precision healthcare, nurses may, in the future, be able to use these results to tailor patient care based on GRS.
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Affiliation(s)
- Monica A. Wagner
- Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Theresa A. Koleck
- School of Nursing, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Alex Conway
- School of Nursing, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | | | - Yvette P. Conley
- School of Nursing, University of Pittsburgh, Pittsburgh, PA 15260, USA
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Crespo-Orta I, Ortiz C, Encarnación J, Suárez E, Matta J. Association between DNA repair capacity and body mass index in women. Mutat Res 2023; 826:111813. [PMID: 36621052 PMCID: PMC10200731 DOI: 10.1016/j.mrfmmm.2022.111813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 12/23/2022] [Accepted: 12/30/2022] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Examine whether DNA repair capacity (DRC) levels are associated with body mass index (BMI) in adult women. DESIGN AND PARTICIPANTS A nested study composed of 539 women without breast cancer (BC) from a case-control BC study in addition to 104 that were recruited later for a total of 643. MEASUREMENTS DRC levels were measured in lymphocytes using a host-cell reactivation assay with a luciferase reporter gene damaged by UVC. This assay measures the efficiency of nucleotide excision repair (NER). Log-binomial regression model was used. The prevalence ratio (PR) was used to evaluate the magnitude of the association between the BMI and DRC levels. An assessment of interaction terms was performed with the likelihood ratio test. The confounding effect was assessed by comparing the point estimates of the crude and adjusted PR. RESULTS The 75th percentiles of DRC levels of the women with a BMI between 18 and 25 and > 25 showed statistically significant differences. The prevalence of a DRC ≤ 5 % among women with BMI > 25 is 1.24 (95 % CI: 1.03, 1.48) times the prevalence of having a DRC ≤ 5 % among the women with BMI ≤ 25 after adjustments for different covariates. This excess was statistically significant (p < 0.05). Women with a family history of cancer had an estimated PR of 1.25 (95 % CI, 0.87-1.39; P ≥ 0.05); and women with no family history of cancer, the estimated PR was 1.6 (95 % CI, 1.14-2.22; p ≤ 0.05). CONCLUSIONS Women with BMI > 25 tend to have lower DRC levels. When having a family history of cancer, the PR of low DRC levels in overweight/obese individuals was not statistically significant. However, the PR of low levels of DRC in overweight/obese individuals with no family history of cancer was statistically significant.
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Affiliation(s)
- Ian Crespo-Orta
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University-School of Medicine, Ponce, Puerto Rico.
| | - Carmen Ortiz
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University-School of Medicine, Ponce, Puerto Rico
| | - Jarline Encarnación
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University-School of Medicine, Ponce, Puerto Rico
| | - Erick Suárez
- Department of Biostatistics and Epidemiology, Graduate School of Public Health, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - Jaime Matta
- Department of Basic Sciences, Ponce Research Institute, Ponce Health Sciences University-School of Medicine, Ponce, Puerto Rico.
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Suba Z. Rosetta Stone for Cancer Cure: Comparison of the Anticancer Capacity of Endogenous Estrogens, Synthetic Estrogens and Antiestrogens. Oncol Rev 2023; 17:10708. [PMID: 37152665 PMCID: PMC10154579 DOI: 10.3389/or.2023.10708] [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: 06/15/2022] [Accepted: 03/30/2023] [Indexed: 05/09/2023] Open
Abstract
This work presents the history of the recognition of principal regulatory capacities of estrogen hormones having been mistakenly regarded as breast cancer promoting agents for more than 120 years. Comprehensive analysis of the results of clinical, epidemiological, immunological and molecular studies justified that endogenous estrogens are the principal regulators of embryonic development, survival and reproduction via orchestrating appropriate expression and even edition of all genes in mammalians. Medical use of chemically modified synthetic estrogens caused toxic complications; thromboembolic events and increased cancer risk in female organs as they proved to be endocrine disruptors deregulating estrogen receptors (ERs) rather than their activators. Synthetic estrogen treatment exhibits ambiguous correlations with cancer risk at different sites, which may be attributed to an inhibition of the unliganded activation of estrogen receptors (ERs) coupled with compensatory liganded activation. The principle of estrogen induced breast cancer led to the introduction of antiestrogen therapies against this tumor; inhibition of the liganded activation of estrogen receptors and aromatase enzyme activity. The initial enthusiasm turned into disappointment as the majority of breast cancers proved to be primarily resistant to antiestrogens. In addition, nearly all patients showing earlier good tumor responses to endocrine therapy, later experienced secondary resistance leading to metastatic disease and fatal outcome. Studying the molecular events in tumors responsive and unresponsive to antiestrogen therapy, it was illuminated that a complete inhibition of liganded ER activation stimulates the growth of cancers, while a successful compensatory upregulation of estrogen signal may achieve DNA restoration, tumor regression and patient's survival. Recognition of the principal role of endogenous estrogens in gene expression, gene edition and DNA repair, estrogen treatment and stimulation of ER expression in patients may bring about a great turn in medical practice.
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6
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Wu J, Wang F, Xie G, Cai Z. Mass spectrometric determination of N7-HPTE-dG and N7-HPTE-Gua in mammalian cells and mice exposed to methoxychlor, an emergent persistent organic pollutant. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128741. [PMID: 35349845 DOI: 10.1016/j.jhazmat.2022.128741] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/11/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Methoxychlor (MXC) is an organopesticide classified as a "Proposed Persistent Organic Pollutant" in the Stockholm Convention, and recent studies revealed that MXC could induce DNA strand breaks, whereas its underlying mechanisms were underinvestigated. Here, we first reported that hydroxymethoxychlor (HPTE), one of MXC's active metabolites, could be oxidized in vivo to form quinone intermediate, which attacked N7 position of 2'-deoxyguanosine to form N7-HPTE-deoxyguanosine (N7-HPTE-dG), followed by depurination to produce N7-HPTE-guanine (N7-HPTE-Gua) in MXC-treated mammalian cells and tissues from mice fed with MXC, employing an ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS) method. We observed a positive correlation between the doses of MXC exposure and the levels of N7-HPTE-Gua and N7-HPTE-dG in cytoplasm and genomic DNA, respectively. Furthermore, after removal of exogenous MXC, the amount of genomic N7-HPTE-dG was significantly decreased during 24 h, while the level of cytoplasmic N7-HPTE-Gua was elevated during first 12 h, indicating the accumulation of the N7-HPTE-Gua in cells. Additionally, for animal experiment, genomic N7-HPTE-dG was observed in livers and cortexes from female C57BL/6 mice fed with MXC, suggesting a potential mechanism of its hepatoxicity and neurotoxicity. Overall, our study provides new understanding about the formation of MXC-induced DNA adducts in mammalian cells and animal models.
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Affiliation(s)
- Jiabin Wu
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 999077, Hong Kong Special Administrative Region
| | - Fuyue Wang
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 999077, Hong Kong Special Administrative Region
| | - Guangshan Xie
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 999077, Hong Kong Special Administrative Region
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 999077, Hong Kong Special Administrative Region.
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7
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Rajan A, Varghese GR, Yadev I, Anandan J, Latha NR, Patra D, Krishnan N, Kuppusamy K, Warrier AV, Bhushan S, Nadhan R, Ram Kumar RM, Srinivas P. Modulation of BRCA1 mediated DNA damage repair by deregulated ER-α signaling in breast cancers. Am J Cancer Res 2022; 12:17-47. [PMID: 35141003 PMCID: PMC8822286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023] Open
Abstract
BRCA1 mutation carriers have a greater risk of developing cancers in hormone-responsive tissues like breasts and ovaries. However, this tissue-specific incidence of BRCA1 related cancers remains elusive. The majority of the BRCA1 mutated breast cancers exhibit typical histopathological features of high-grade tumors, with basal epithelial phenotype, classified as triple-negative molecular subtype and have a higher percentage of DNA damage and chromosomal abnormality. Though there are many studies relating BRCA1 with ER-α (Estrogen receptor-α), it has not been reported whether E2 (Estrogen) -ER-α signaling can modulate the DNA repair activities of BRCA1. The present study analyzes whether deregulation of ER-α signaling, arising as a result of E2/ER-α deficiency, could impact the BRCA1 dependent DDR (DNA Damage Response) pathways, predominantly those of DNA-DSB (Double Strand break) repair and oxidative damage response. We demonstrate that E2/E2-stimulated ER-α can augment BRCA1 mediated high fidelity repairs like HRR (Homologous Recombination Repair) and BER (Base Excision Repair) in breast cancer cells. Conversely, a condition of ER-α deficiency itself or any interruption in ligand-dependent ER-α transactivation resulted in delayed DNA damage repair, leading to persistent activation of γH2AX and retention of unrepaired DNA lesions, thereby triggering tumor progression. ER-α deficiency not only limited the HRR in cells but also facilitated the DSB repair through error prone pathways like NHEJ (Non Homologous End Joining). ER-α deficiency associated persistence of DNA lesions and reduced expression of DDR proteins were validated in human mammary tumors.
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Affiliation(s)
- Arathi Rajan
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
- Department of Biotechnology, University of KeralaThiruvananthapuram 695011, Kerala, India
| | - Geetu R Varghese
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Induprabha Yadev
- Goverment Medical CollegeThiruvananthapuram 695011, Kerala, India
| | - Jaimie Anandan
- Goverment Medical CollegeThiruvananthapuram 695011, Kerala, India
| | - Neetha R Latha
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Dipyaman Patra
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Neethu Krishnan
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Krithiga Kuppusamy
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Arathy V Warrier
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Satej Bhushan
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Revathy Nadhan
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
- OU Health Stephenson Cancer CentreOklahoma, United State
| | - Ram Mohan Ram Kumar
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
| | - Priya Srinivas
- Cancer Research Program, Rajiv Gandhi Centre for BiotechnologyThiruvananthapuram 695014, Kerala, India
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8
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Ibrahim IH, Abd El-Aziz HG, Amer NNL, Abd El-Sameea HS. Mutational pattern of PIK3CA exon 20 in circulating DNA in breast cancer. Saudi J Biol Sci 2022; 29:2828-2835. [PMID: 35531214 PMCID: PMC9073026 DOI: 10.1016/j.sjbs.2022.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/28/2021] [Accepted: 01/02/2022] [Indexed: 02/06/2023] Open
Abstract
Breast cancer (BC) is one of the most common cancers with diverse mutations, etiology and causes. Mutational signature of the driver genes could allow for better understanding disease etiology and progression. This study aims to assess PIK3CA Exon 20 somatic mutational signature in relation to potential underlying etiology. Circulating DNA of 71 Egyptian BC patients was isolated, amplified for PIK3CA Exon 20, and sequenced. Mutational signature was determined according to COSMIC v2 signature. Public BC dataset was analysed to assess PIK3CA mutations effect on the transcriptomic profile. Somatic mutations of PIK3CA exon 20 were found in 66.2% of the study cohort. Nucleotide substitution patterns were similar to general nucleotide substitution patterns in BC. Signature 3 and 9 were the most common signatures in the studied BC patients. Signature of Aristolochic acid exposure was found in some cases. The most common nucleotide substitution was T > A transversion, but substitutions T > G and T > C were correlated to each other and to the total mutation number. PIK3CA mutations were found to disrupt several pathways including RAC1, PDGF, Wnt, and integrin signalling. PIK3CA exon 20 mutational signatures in Egyptian BC patients could suggest a disease etiology involving homologous recombination deficiency (HRD) and polymerase eta (Pol η). Nucleotide substitution patterns could indicate the role of exposure to oxidative stress and some carcinogens such as 4-aminobiphenyl and Aristolochic acid.
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9
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Jiménez-Salazar JE, Damian-Ferrara R, Arteaga M, Batina N, Damián-Matsumura P. Non-Genomic Actions of Estrogens on the DNA Repair Pathways Are Associated With Chemotherapy Resistance in Breast Cancer. Front Oncol 2021; 11:631007. [PMID: 33869016 PMCID: PMC8044931 DOI: 10.3389/fonc.2021.631007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Estrogens have been implicated in the etiology of breast cancer for a long time. It has been stated that long-term exposure to estrogens is associated with a higher incidence of breast cancer, since estradiol (E2) stimulates breast cell growth; however, its effect on DNA damage/repair is only starting to be investigated. Recent studies have documented that estrogens are able to modify the DNA damage response (DDR) and DNA repair mechanisms. On the other hand, it has been proposed that DDR machinery can be altered by estrogen signaling pathways, that can be related to cancer progression and chemoresistance. We have demonstrated that E2 promotes c-Src activation and breast cancer cell motility, through a non-genomic pathway. This review discusses scientific evidence supporting this non-genomic mechanism where estrogen modifies the DNA repair pathways, and its relationship to potential causes of chemoresistance.
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Affiliation(s)
- Javier E Jiménez-Salazar
- Department of Biology of Reproduction, Division of Biological Sciences and Health (DCBS), Autonomous Metropolitan University (UAM), Mexico City, Mexico.,School of Medicine, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Rebeca Damian-Ferrara
- Monterrey Institute of Technology and Higher Education (ITESM), School of Engineering and Sciences, Monterrey, Mexico
| | - Marcela Arteaga
- Department of Biology of Reproduction, Division of Biological Sciences and Health (DCBS), Autonomous Metropolitan University (UAM), Mexico City, Mexico
| | - Nikola Batina
- Nanotechnology and Molecular Engineering Laboratory, Department of Chemistry, Division of Basic Science and Engineering (DCBI), Autonomous Metropolitan University (UAM), Mexico City, Mexico
| | - Pablo Damián-Matsumura
- Department of Biology of Reproduction, Division of Biological Sciences and Health (DCBS), Autonomous Metropolitan University (UAM), Mexico City, Mexico
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10
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Deregulated estrogen receptor signaling and DNA damage response in breast tumorigenesis. Biochim Biophys Acta Rev Cancer 2020; 1875:188482. [PMID: 33260050 DOI: 10.1016/j.bbcan.2020.188482] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023]
Abstract
Carriers of BRCA1 mutations have a higher chance of developing cancers in hormone-responsive tissues like the breast, ovary and prostate, compared to other tissues. These tumors generally exhibit basal-like characters and do not express estrogen receptor (ER) or progesterone receptor (PR). Intriguingly, BRCA1 mutated breast cancers have a less favorable clinical outcome, as they will not respond to hormone therapy. BRCA1 has been reported to exhibit ligand dependent and independent transcriptional inhibition of ER-α; however, there exists a controversy on whether BRCA1 induces or inhibits ER-α expression. The mechanisms associated with resistance of BRCA1 mutated cancers to hormone therapy, as well as the tissue restriction exhibited by BRCA1 mutated tumors are still largely unknown. BRCA1 mutated tumors possess increased DNA damages and decreased genomic integrity, as BRCA1 plays a cardinal role in high fidelity DNA damage repair pathways, like homologous recombination (HR). The existence of cross regulatory signaling networks between ER-α and BRCA1 speculates a role of ER on BRCA1 dependent DDR pathways. Thus, the loss or haploinsufficiency of BRCA1 and the consequential deregulation of ER-α signaling may result in persistence of unrepaired DNA damages, eventually leading to tumorigenesis. Therefore, understanding of this cross-talk between ER-α and BRCA1, with regard to DDR, will provide critical insights to steer drug development and therapy for breast/ovarian cancers. This review discusses the mechanisms by which estrogen and ER signaling influence BRCA1 mediated DNA damage response and repair pathways in the mammalian system.
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11
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Safi M, Najib AR. Evaluation of circulating cell-free nuclear and mitochondrial DNA levels in Syrian patients with breast tumor. Exp Ther Med 2020; 21:65. [PMID: 33365065 PMCID: PMC7716636 DOI: 10.3892/etm.2020.9497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 09/03/2020] [Indexed: 01/05/2023] Open
Abstract
In the last decade, the roles of circulating cell free nuclear (ccfn) and ccf mitochondrial (ccfmt) DNA as potential noninvasive biomarkers have been demonstrated in numerous different types of disease, including cancer. However, the results remain controversial. The present study aimed to investigate the roles of ccfnDNA and ccfmtDNA levels in the plasma of patients with breast cancer. A total of 84 Syrian female subjects were included in the study, who were divided into 3 groups: i) Malignant disease group (n=33); ii) benign disease group (n=26); and iii) healthy control group (n=25). CcfnDNA and ccfmtDNA were determined using real-time quantitative PCR and the reactions were followed by melting curve analysis. The results indicated no significant differences in the plasma levels of ccfnDNA, ccfmtDNA or the ratio of ccfmtDNA/ccfnDNA between the study groups. Of note, a positive correlation was observed between the ccfmtDNA/ccfnDNA ratio and age in the control group (P=0.012; r=0.505). In addition, a positive correlation was identified between ccfnDNA levels and the estrogen receptor status (P=0.045; r=0.416), while a negative correlation between ccfmtDNA/ccfnDNA ratio and the progesterone receptor status was obtained (P=0.045; r=-0.448. Aging and the role of hormones in the cells may be responsible for these results. In the future, the present study should be followed up with mutation detection analyses and large-scale studies.
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Affiliation(s)
- Milda Safi
- Department of Biochemistry and Microbiology, Faculty of Pharmacy, Damascus University, Damascus 22743, Syria
| | - Abdul Rahman Najib
- Department of Biostatistics, Faculty of Statistics, Damascus University, Damascus 22743, Syria
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12
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Shen J, Song R, Chow WH, Zhao H. Homologous recombination repair capacity in peripheral blood lymphocytes and breast cancer risk. Carcinogenesis 2020; 41:1363-1367. [PMID: 32692853 PMCID: PMC7566366 DOI: 10.1093/carcin/bgaa081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/01/2020] [Accepted: 07/17/2020] [Indexed: 11/14/2022] Open
Abstract
Deficiency in homologous recombination repair (HRR) capacity is frequently observed in breast tumors. However, whether HRR deficiency is a tumor-specific biomarker or a risk factor for breast cancer is unknown. In this two-stage study, using a host cell reactivation assay, we assessed the relationship between HRR capacity in peripheral blood lymphocytes (PBLs) and breast cancer risk. The discovery stage included 152 breast cancer patients and 152 healthy controls matched on age and race. HRR capacity was found to be significantly lower in Black women than in White women among controls (P = 0.015) and cases (P = 0.012). Among cases, triple negative breast cancer patients had significantly lower HRR capacity than ER+/PR+ breast cancer patients (P = 0.006). In risk assessment, HRR capacity was found to be significantly lower in cases than in controls (P < 0.001), and decreased HRR capacity was associated with 1.42-fold increased risk of breast cancer (95% CI: 1.21, 2.53). In the validation stage, we assessed HRR capacity in a nested case-control study using pre-diagnostic samples. We found that decreased HRR capacity was associated with 1.21-fold increased risk of breast cancer (95% CI: 1.04, 4.58). In summary, our results demonstrate that decreased HRR capacity in PBLs is a risk factor for breast cancer.
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Affiliation(s)
- Jie Shen
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Family Medicine and Population Health, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Renduo Song
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wong-Ho Chow
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hua Zhao
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Family Medicine and Population Health, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
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13
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Compensatory Estrogen Signal Is Capable of DNA Repair in Antiestrogen-Responsive Cancer Cells via Activating Mutations. JOURNAL OF ONCOLOGY 2020; 2020:5418365. [PMID: 32774370 PMCID: PMC7407016 DOI: 10.1155/2020/5418365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/30/2020] [Accepted: 06/25/2020] [Indexed: 02/08/2023]
Abstract
Cancer cells are embarrassed human cells exhibiting the remnants of same mechanisms for DNA stabilization like patients have in their healthy cells. Antiestrogens target the liganded activation of ERs, which is the principal means of genomic regulation in both patients and their tumors. The artificial blockade of liganded ER activation is an emergency situation promoting strong compensatory actions even in cancer cells. When tumor cells are capable of an appropriate upregulation of ER signaling resulting in DNA repair, a tumor response may be detected. In contrast, when ER signaling is completely inhibited, tumor cells show unrestrained proliferation, and tumor growth may be observed. The laboratory investigations of genomic mechanisms in antiestrogen-responsive and antiestrogen-unresponsive tumor cells have considerably enhanced our knowledge regarding the principal regulatory capacity of estrogen signaling. In antiestrogen-responsive tumor cells, a compensatory increased expression and liganded activation of estrogen receptors (ERs) result in an apoptotic death. Conversely, in antiestrogen resistant tumors exhibiting a complete blockade of liganded ER activation, a compensatory effort for unliganded ER activation is characteristic, conferred by the increased expression and activity of growth factor receptors. However, even extreme unliganded ER activation is incapable of DNA restoration when the liganded ER activation is completely blocked. Researchers mistakenly suspect even today that in tumors growing under antiestrogen treatment, the increased unliganded activation of estrogen receptor via activating mutations is an aggressive survival technique, whilst it is a compensatory effort against the blockade of liganded ER activation. The capacity of liganded ERs for genome modification in emergency states provides possibilities for estrogen/ER use in medical practice including cancer cure.
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14
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5',8-Cyclopurine Lesions in DNA Damage: Chemical, Analytical, Biological, and Diagnostic Significance. Cells 2019; 8:cells8060513. [PMID: 31141888 PMCID: PMC6628319 DOI: 10.3390/cells8060513] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/18/2019] [Accepted: 05/22/2019] [Indexed: 12/14/2022] Open
Abstract
Purine 5′,8-cyclo-2′-deoxynucleosides (cPu) are tandem-type lesions observed among the DNA purine modifications and identified in mammalian cellular DNA in vivo. These lesions can be present in two diasteroisomeric forms, 5′R and 5′S, for each 2′-deoxyadenosine and 2′-deoxyguanosine moiety. They are generated exclusively by hydroxyl radical attack to 2′-deoxyribose units generating C5′ radicals, followed by cyclization with the C8 position of the purine base. This review describes the main recent achievements in the preparation of the cPu molecular library for analytical and DNA synthesis applications for the studies of the enzymatic recognition and repair mechanisms, their impact on transcription and genetic instability, quantitative determination of the levels of lesions in various types of cells and animal model systems, and relationships between the levels of lesions and human health, disease, and aging, as well as the defining of the detection limits and quantification protocols.
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15
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Gagno S, D'Andrea MR, Mansutti M, Zanusso C, Puglisi F, Dreussi E, Montico M, Biason P, Cecchin E, Iacono D, Russo S, Cinausero M, Saracchini S, Gasparini G, Sartori D, Bari M, Collovà E, Meo R, Merkabaoui G, Spagnoletti I, Pellegrino A, Gianni L, Sandri P, Cretella E, Vattemi E, Rocca A, Serra P, Fabbri MA, Benedetti G, Foghini L, Medici M, Basso U, Amoroso V, Riccardi F, Baldelli AM, Clerico M, Bonura S, Saggia C, Innocenti F, Toffoli G. A New Genetic Risk Score to Predict the Outcome of Locally Advanced or Metastatic Breast Cancer Patients Treated With First-Line Exemestane: Results From a Prospective Study. Clin Breast Cancer 2019; 19:137-145.e4. [PMID: 30584056 DOI: 10.1016/j.clbc.2018.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/18/2018] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Approximately 50% of locally advanced or metastatic breast cancer (MBC) patients treated with first-line exemestane do not show objective response and currently there are no reliable biomarkers to predict the outcome of patients using this therapy. The constitutive genetic background might be responsible for differences in the outcome of exemestane-treated patients. We designed a prospective study to investigate the role of germ line polymorphisms as biomarkers of survival. PATIENTS AND METHODS Three hundred two locally advanced or MBC patients treated with first-line exemestane were genotyped for 74 germ line polymorphisms in 39 candidate genes involved in drug activity, hormone balance, DNA replication and repair, and cell signaling pathways. Associations with progression-free survival (PFS) and overall survival (OS) were tested with multivariate Cox regression. Bootstrap resampling was used as an internal assessment of results reproducibility. RESULTS Cytochrome P450 19A1-rs10046TC/CC, solute carrier organic anion transporter 1B1-rs4149056TT, adenosine triphosphate binding cassette subfamily G member 2-rs2046134GG, fibroblast growth factor receptor-4-rs351855TT, and X-ray repair cross complementing 3-rs861539TT were significantly associated with PFS and then combined into a risk score (0-1, 2, 3, or 4-6 risk points). Patients with the highest risk score (4-6 risk points) compared with ones with the lowest score (0-1 risk points) had a median PFS of 10 months versus 26.3 months (adjusted hazard ratio [AdjHR], 3.12 [95% confidence interval (CI), 2.18-4.48]; P < .001) and a median OS of 38.9 months versus 63.0 months (AdjHR, 2.41 [95% CI, 1.22-4.79], P = .012), respectively. CONCLUSION In this study we defined a score including 5 polymorphisms to stratify patients for PFS and OS. This score, if validated, might be translated to personalize locally advanced or MBC patient treatment and management.
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Affiliation(s)
- Sara Gagno
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | | | - Mauro Mansutti
- Department of Oncology, University Hospital of Udine, Udine, Italy
| | - Chiara Zanusso
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | - Fabio Puglisi
- Medical Oncology and Cancer Prevention Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy; Medical Oncology, Department of Medicine, University of Udine, Udine, Italy
| | - Eva Dreussi
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | - Marcella Montico
- Scientific Directorate, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | - Paola Biason
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy; Medical Oncology Unit 1, Istituto Oncologico Veneto IOV IRCCS, Padova, Italy
| | - Erika Cecchin
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | - Donatella Iacono
- Department of Oncology, University Hospital of Udine, Udine, Italy
| | - Stefania Russo
- Department of Oncology, University Hospital of Udine, Udine, Italy
| | - Marika Cinausero
- Department of Oncology, University Hospital of Udine, Udine, Italy
| | - Silvana Saracchini
- Medical Oncology Unit, Santa Maria degli Angeli Hospital, Pordenone, Italy
| | | | - Donata Sartori
- Medical Oncology Department, General Hospital, Mirano, Italy
| | - Mario Bari
- Medical Oncology Department, General Hospital, Mirano, Italy
| | - Elena Collovà
- Oncology Operative Unit, ASST Ovest Milanese, Ospedale di Legnano, Legnano, Italy
| | - Rosa Meo
- Medical Oncology Unit, Presidio Ospedaliero Sant'Alfonso Maria dei Liguori, Cerreto Sannita, Italy
| | - Ghassan Merkabaoui
- Medical Oncology Unit, Azienda Ospedaliera Universitaria Federico II di Napoli, Napoli, Italy
| | - Ilaria Spagnoletti
- Medical Oncology Unit, Ospedale Sacro Cuore di Gesù, Fatebenefratelli, Benevento, Italy
| | - Arianna Pellegrino
- Medical Oncology Unit, Ospedale San Pietro Fatebenefratelli, Rome, Italy
| | | | - Paolo Sandri
- Medical Oncology Unit, San Vito al Tagliamento Hospital, Pordenone, Italy
| | | | - Emanuela Vattemi
- Medical Oncology, Azienda Sanitaria dell'Alto Adige, Bolzano, Italy
| | - Andrea Rocca
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST), IRCCS, Meldola, Italy
| | - Patrizia Serra
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST), IRCCS, Meldola, Italy
| | - Maria Agnese Fabbri
- Division of Oncology, Complesso Ospedaliero Belcolle, AUSL Viterbo, Viterbo, Italy
| | | | | | - Michele Medici
- Department of Medical Oncology, Azienda ULSS 3 Serenissima, Mestre, Italy
| | - Umberto Basso
- Medical Oncology Unit 1, Istituto Oncologico Veneto IOV IRCCS, Padova, Italy
| | - Vito Amoroso
- Medical Oncology Unit, Spedali Civili Hospital, Brescia, Italy
| | | | - Anna Maria Baldelli
- Medical Oncology Unit, Azienda Ospedaliera Ospedali Riuniti Marche Nord, San Salvatore Hospital, Pesaro, Italy
| | - Mario Clerico
- Department of Oncology, Ospedale degli Infermi, Biella, Italy
| | | | - Chiara Saggia
- Azienda Ospedaliero-Universitaria Maggiore della Carità, Novara, Italy
| | | | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy.
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16
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Kalaiarasi C, Manjula S, Kumaradhas P. Combined quantum mechanics/molecular mechanics (QM/MM) methods to understand the charge density distribution of estrogens in the active site of estrogen receptors. RSC Adv 2019; 9:40758-40771. [PMID: 35542636 PMCID: PMC9076430 DOI: 10.1039/c9ra08607b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/28/2019] [Indexed: 12/14/2022] Open
Abstract
The ligand binding to protein and host–guest interactions are ubiquitous for molecular recognition. In drug design, the ligand binding to the active site of proteins is influenced by the charge density distribution and the electrostatic interactions of ligands and the nearby amino acids of the protein. The charge density analyses of ligand–protein complexes need accurate positions of hydrogen atoms and their valence electron distribution and the fine structure of proteins. Such information cannot be obtained from the conventional protein X-ray crystallography analysis in the resolution range of 1.5 to 3.5 Å. This can be realized from QM/MM based structure and charge density analysis of estrogens with the estrogen receptor. The charge density properties such as electron density, Laplacian of electron density and electrostatic properties of estrogens in the presence of active site amino acid residues have been determined and compared with the isolated estrogen molecules from theory and experimental. The present study reveals the chemical bonding nature of estrogen molecules and the strength of the intermolecular interactions in the active site of estrogen receptor, and also the importance of π⋯π interactions between the estrogens and Phe404 amino acid residue and protonation state of His524 amino acid residue have been identified using electrostatic potential maps. The difference in the electrostatic potential map of estrogens displays the hormone dependent actions of estrogen receptor. This method is very helpful to derive the charge density distribution of macromolecules to understand their biological recognition and interactions. The ligand binding to protein and host–guest interactions are ubiquitous for molecular recognition.![]()
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Affiliation(s)
- C. Kalaiarasi
- Laboratory of Biocrystallography and Computational Molecular Biology
- Department of Physics
- Periyar University
- Salem-636 011
- India
| | - S. Manjula
- Laboratory of Biocrystallography and Computational Molecular Biology
- Department of Physics
- Periyar University
- Salem-636 011
- India
| | - P. Kumaradhas
- Laboratory of Biocrystallography and Computational Molecular Biology
- Department of Physics
- Periyar University
- Salem-636 011
- India
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17
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Li X, Rouchka EC, Brock GN, Yan J, O’Toole TE, Tieri DA, Cooper NGF. A combined approach with gene-wise normalization improves the analysis of RNA-seq data in human breast cancer subtypes. PLoS One 2018; 13:e0201813. [PMID: 30089167 PMCID: PMC6082555 DOI: 10.1371/journal.pone.0201813] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/23/2018] [Indexed: 12/23/2022] Open
Abstract
Breast cancer (BC) is increasing in incidence and resistance to treatment worldwide. The challenges in limited therapeutic options and poor survival outcomes in BC subtypes persist because of its molecular heterogeneity and resistance to standard endocrine therapy. Recently, high throughput RNA sequencing (RNA-seq) has been used to identify biomarkers of disease progression and signaling pathways that could be amenable to specific therapies according to the BC subtype. However, there is no single generally accepted pipeline for the analysis of RNA-seq data in biomarker discovery due, in part, to the needs of simultaneously satisfying constraints of sensitivity and specificity. We proposed a combined approach using gene-wise normalization, UQ-pgQ2, followed by a Wald test from DESeq2. Our approach improved the analysis based on within-group comparisons in terms of the specificity when applied to publicly available RNA-seq BC datasets. In terms of identifying differentially expressed genes (DEGs), we combined an optimized log2 fold change cutoff with a nominal false discovery rate of 0.05 to further minimize false positives. Using this method in the analysis of two GEO BC datasets, we identified 797 DEGs uniquely expressed in triple negative BC (TNBC) and significantly associated with T cell and immune-related signaling, contributing to the immunotherapeutic efficacy in TNBC patients. In contrast, we identified 1403 DEGs uniquely expressed in estrogen positive and HER2 negative BC (ER+HER2-BC) and significantly associated with eicosanoid, notching and FAK signaling while a common set of genes was associated with cellular growth and proliferation. Thus, our approach to control for false positives identified two distinct gene expression profiles associated with these two subtypes of BC which are distinguishable by their molecular and functional attributes.
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Affiliation(s)
- Xiaohong Li
- Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, KY, United States of America
| | - Eric C. Rouchka
- Department of Computer Engineering and Computer Science, University of Louisville, Louisville, KY, United States of America
| | - Guy N. Brock
- Department of Biomedical Informatics, Ohio State University, Columbus, OH, United States of America
| | - Jun Yan
- Department of Medicine, James Graham Brown Cancer Center, University of Louisville, Louisville, KY, United States of America
| | - Timothy E. O’Toole
- Department of Cardiology, University of Louisville, Louisville, KY, United States of America
| | - David A. Tieri
- Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, KY, United States of America
| | - Nigel G. F. Cooper
- Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, KY, United States of America
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18
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Prusinski Fernung LE, Al-Hendy A, Yang Q. A Preliminary Study: Human Fibroid Stro-1 +/CD44 + Stem Cells Isolated From Uterine Fibroids Demonstrate Decreased DNA Repair and Genomic Integrity Compared to Adjacent Myometrial Stro-1 +/CD44 + Cells. Reprod Sci 2018; 26:619-638. [PMID: 29954254 DOI: 10.1177/1933719118783252] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
CONTEXT Although uterine fibroids (UFs) continue to place a major burden on female reproductive health, the mechanisms behind their origin remain undetermined. Normal myometrial stem cells may be transformed into tumor-initiating stem cells, causing UFs, due to unknown causes of somatic mutations in MED12, found in up to 85% of sporadically formed UFs. It is well established in other tumor types that defective DNA repair increases the risk of such tumorigenic somatic mutations, mechanisms not yet studied in UFs. OBJECTIVE To examine the putative cause(s) of this stem cell transformation, we analyzed DNA repair within stem cells from human UFs compared to those from adjacent myometrium to determine whether DNA repair in fibroid stem cells is compromised. DESIGN Human fibroid (F) and adjacent myometrial (Myo) stem cells were isolated from fresh tissues, and gene expression relating to DNA repair was analyzed. Fibroid stem cells differentially expressed DNA repair genes related to DNA double- (DSBs) and single-strand breaks. DNA damage was measured using alkaline comet assay. Additionally, DNA DSBs were induced in these stem cells and DNA DSB repair evaluated (1) by determining changes in phosphorylation of DNA DSB-related proteins and (2) by determining differences in γ-H2AX foci formation and relative DNA repair protein RAD50 expression. RESULTS Overall, F stem cells demonstrated increased DNA damage and altered DNA repair gene expression and signaling, suggesting that human F stem cells demonstrate impaired DNA repair. CONCLUSIONS Compromised F stem cell DNA repair may contribute to further mutagenesis and, consequently, further growth and propagation of UF tumors.
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Affiliation(s)
- Lauren E Prusinski Fernung
- 1 Department of Obstetrics and Gynecology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ayman Al-Hendy
- 1 Department of Obstetrics and Gynecology, Medical College of Georgia, Augusta University, Augusta, GA, USA.,2 Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
| | - Qiwei Yang
- 2 Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
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19
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Bernichon E, Vallard A, Wang Q, Attignon V, Pissaloux D, Bachelot T, Heudel PE, Ray-Coquard I, Bonnet E, de la Fouchardière A, Faure C, Chopin N, Beurrier F, Racadot S, Sunyach MP, Rancoule C, Perol D, Corset V, Agrapart V, Tinquaut F, Blay JY, Magné N, Trédan O. Genomic alterations and radioresistance in breast cancer: an analysis of the ProfiLER protocol. Ann Oncol 2017; 28:2773-2779. [PMID: 28945826 DOI: 10.1093/annonc/mdx488] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Breast cancer (BC) patients with comparable prognostic features have heterogeneous outcomes, party related to a possible radiotherapy resistance leading to local-regional recurrences (LRR). The objective of the present study was to identify predictive molecular biomarkers of LRR of BC. PATIENTS AND METHODS Genetic profile of 146 BC patients' tumours included in the ProfiLER clinical trial (NC01774409) between 2013 and 2016 were analysed using next-generation-sequencing and comparative-genomic-hybridization tests. Patients and tumour characteristics were retrospectively collected and analysed for association with genomic rearrangements (mutations, amplification, deletions). Only gene alterations observed in >3% of the tumours were selected. RESULTS A total of 193 genomic rearrangements were identified, and 16 were observed in >3% of tumours. One was statistically correlated to the risk of local relapse. A median loco-regional progression-free survival (LRPFS) of 23.6 years was reported for PIK3CA mutation carriers (n = 31, 21.2%) versus 9.9 years for PIK3CA wild-type patients (HR 0.27, 95% CI 0.12-0.65, P = 0.002 in univariate analysis). PIK3CA mutation was identified as an independent protective factor on LRR using multivariate analysis (HR 0.29, 95% CI 0.09-0.99, P = 0.047). All other mutations, amplifications or deletions were not found associated with LRPFS. CONCLUSION PIK3CA mutation was associated with a lower risk of local relapse in this population of BCs. This is consistent with recent studies suggesting PIK3CA to be part of biological pathways impacting the radiosensitivity.
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MESH Headings
- Adult
- Biomarkers, Tumor/genetics
- Breast Neoplasms/genetics
- Breast Neoplasms/pathology
- Breast Neoplasms/radiotherapy
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/radiotherapy
- Carcinoma, Ductal, Breast/secondary
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/radiotherapy
- Carcinoma, Lobular/secondary
- Class I Phosphatidylinositol 3-Kinases/genetics
- Combined Modality Therapy
- Female
- Follow-Up Studies
- Gene Rearrangement
- Genomics
- High-Throughput Nucleotide Sequencing
- Humans
- Lymphatic Metastasis
- Middle Aged
- Mutation
- Neoplasm Invasiveness
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/pathology
- Neoplasm Recurrence, Local/radiotherapy
- Prognosis
- Prospective Studies
- Radiation Tolerance/genetics
- Retrospective Studies
- Survival Rate
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Affiliation(s)
| | - A Vallard
- Department of Radiation Oncology, Lucien Neuwirth Cancer Institute, Saint-Priest-en-Jarez
| | - Q Wang
- Department of Translational Research
| | | | | | | | | | | | | | | | | | | | | | | | | | - C Rancoule
- Department of Radiation Oncology, Lucien Neuwirth Cancer Institute, Saint-Priest-en-Jarez
| | - D Perol
- Department of Clinical Research, Léon Bérard Cancer Centre, Lyon
| | - V Corset
- Department of Clinical Research, Léon Bérard Cancer Centre, Lyon
| | - V Agrapart
- Department of Clinical Research, Léon Bérard Cancer Centre, Lyon
| | - F Tinquaut
- Department of Hygée Center, Lucien Neuwirth Cancer Institute, Saint-Priest-en-Jarez
| | - J-Y Blay
- Department of Translational Research; Department of Medical Oncology
| | - N Magné
- Department of Radiation Oncology, Lucien Neuwirth Cancer Institute, Saint-Priest-en-Jarez; Department of Laboratoire de Radiobiologie Cellulaire et Moléculaire, CNRS UMR 5822, Institut de Physique Nucléaire de Lyon, IPNL, Lyon Medicine University, Lyon, France.
| | - O Trédan
- Department of Translational Research; Department of Medical Oncology
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20
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Variability in DNA Repair Capacity Levels among Molecular Breast Cancer Subtypes: Triple Negative Breast Cancer Shows Lowest Repair. Int J Mol Sci 2017; 18:ijms18071505. [PMID: 28704967 PMCID: PMC5535995 DOI: 10.3390/ijms18071505] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 07/06/2017] [Accepted: 07/07/2017] [Indexed: 12/26/2022] Open
Abstract
Breast cancer (BC) is a heterogeneous disease which many studies have classified in at least four molecular subtypes: Luminal A, Luminal B, HER2-Enriched, and Basal-like (including triple-negative breast cancer, TNBC). These subtypes provide information to stratify patients for better prognostic predictions and treatment selection. Individuals vary in their sensitivities to carcinogens due to differences in their DNA repair capacity (DRC) levels. Although our previous case-control study established low DRC (in terms of NER pathway) as a BC risk factor, we aim to study this effect among the molecular subtypes. Therefore, the objectives of this study include investigating whether DRC varies among molecular subtypes and testing any association regarding DRC. This study comprised 267 recently diagnosed women with BC (cases) and 682 without BC (controls). Our results show a substantial variability in DRC among the molecular subtypes, with TNBC cases (n = 47) having the lowest DRC (p-value < 0.05). Almost 80 percent of BC cases had a DRC below the median (4.3%). Low DRC was strongly associated with the TNBC subtype (OR 7.2; 95% CI 3.3, 15.7). In conclusion, our study provides the first report on the variability among the molecular subtypes and provides a hypothesis based on DRC levels for the poor prognosis of TNBC.
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21
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Krokidis MG, Terzidis MA, Efthimiadou E, Zervou SK, Kordas G, Papadopoulos K, Hiskia A, Kletsas D, Chatgilialoglu C. Purine 5′,8-cyclo-2′-deoxynucleoside lesions: formation by radical stress and repair in human breast epithelial cancer cells. Free Radic Res 2017; 51:470-482. [DOI: 10.1080/10715762.2017.1325485] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Marios G. Krokidis
- Institute of Nanoscience and Nanotechnology, NSCR “Demokritos”, Athens, Greece
| | | | - Eleni Efthimiadou
- Institute of Nanoscience and Nanotechnology, NSCR “Demokritos”, Athens, Greece
| | | | - George Kordas
- Institute of Nanoscience and Nanotechnology, NSCR “Demokritos”, Athens, Greece
| | | | - Anastasia Hiskia
- Institute of Nanoscience and Nanotechnology, NSCR “Demokritos”, Athens, Greece
| | - Dimitris Kletsas
- Institute of Biosciences and Applications, NCSR “Demokritos”, Athens, Greece
| | - Chryssostomos Chatgilialoglu
- Institute of Nanoscience and Nanotechnology, NSCR “Demokritos”, Athens, Greece
- ISOF, Consiglio Nazionale delle Ricerche, Bologna, Italy
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22
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High DRC Levels Are Associated with Let-7b Overexpression in Women with Breast Cancer. Int J Mol Sci 2016; 17:ijms17060865. [PMID: 27271599 PMCID: PMC4926399 DOI: 10.3390/ijms17060865] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/05/2016] [Accepted: 05/16/2016] [Indexed: 12/28/2022] Open
Abstract
Nucleotide Excision Repair (NER) is a critical pathway involved in breast cancer (BC). We have previously published that a low DNA repair capacity (DRC) is associated with a higher risk of BC in Puerto Rican women. Let-7b belongs to a miRNA family with tumor suppressor activity that targets oncogenes. We isolated miRNAs from plasma of 153 Puerto Rican women with and without BC. DRC was measured in lymphocytes by means of a host cell reactivation assay. These women were divided into four groups according to their DRC level: High (>3.8%) and low (<3.8%). The four groups consisted of BC patients with high (n = 35) and low (n = 43) DRC and controls with high (n = 39) and low (n = 36) DRC. Epidemiologic data were collected at initial BC diagnosis and almost five years after diagnosis. A significant difference in Let-7b expression was found in BC patients with high DRC versus the remaining groups (p < 0.001). Thus, our data reveal a possible role of Let-7b on DRC during breast carcinogenesis. Our study is innovative because it provides the first evidence that Let-7b may play role in DRC regulation (through the NER repair pathway) in BC.
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