1
|
Bi X, Zhang M, Zhou J, Yan X, Cheng L, Luo L, Huang C, Yin Z. Phosphorylated Hsp27 promotes adriamycin resistance in breast cancer cells through regulating dual phosphorylation of c-Myc. Cell Signal 2023; 112:110913. [PMID: 37797796 DOI: 10.1016/j.cellsig.2023.110913] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/02/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
Chemotherapy resistance of breast cancer cells is one of the major factors affecting patient survival rate. Heat shock protein 27 (Hsp27) is a member of the small heat shock protein family that has been reported to be associated with chemotherapy resistance in tumor cells, but the exact mechanism is not fully understood. Here, we explored the regulation of Hsp27 in adriamycin-resistant pathological conditions of breast cancer in vitro and in vivo. We found that overexpression of Hsp27 in MCF-7 breast cancer cells reversed DNA damage induced by adriamycin, and thereby reduced subsequent cell apoptosis. Non-phosphorylated Hsp27 accelerated ubiquitin-mediated degradation of c-Myc under normal physiological conditions. After stimulation with adriamycin, Hsp27 was phosphorylated and translocated from the cytoplasm into the nucleus, where phosphorylated Hsp27 upregulated c-Myc and Nijmegen breakage syndrome 1 (NBS1) protein levels thus leading to ATM activation. We further showed that phosphorylated Hsp27 promoted c-Myc nuclear import and stabilization by regulating T58/S62 phosphorylation of c-Myc through a protein phosphatase 2A (PP2A)-dependent mechanism. Collectively, the data presented in this study demonstrate that Hsp27, in its phosphorylation state, plays a critical role in adriamycin-resistant pathological conditions of breast cancer cells.
Collapse
Affiliation(s)
- Xiaowen Bi
- School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China; Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Miao Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Jinyi Zhou
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Xintong Yan
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Lixia Cheng
- School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.
| | - Chunhong Huang
- School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China.
| | - Zhimin Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, China.
| |
Collapse
|
2
|
Amini P, Hajihosseini M, Pyne S, Dinu I. Geographically weighted linear combination test for gene-set analysis of a continuous spatial phenotype as applied to intratumor heterogeneity. Front Cell Dev Biol 2023; 11:1065586. [PMID: 36998245 PMCID: PMC10044624 DOI: 10.3389/fcell.2023.1065586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 02/22/2023] [Indexed: 03/11/2023] Open
Abstract
Background: The impact of gene-sets on a spatial phenotype is not necessarily uniform across different locations of cancer tissue. This study introduces a computational platform, GWLCT, for combining gene set analysis with spatial data modeling to provide a new statistical test for location-specific association of phenotypes and molecular pathways in spatial single-cell RNA-seq data collected from an input tumor sample.Methods: The main advantage of GWLCT consists of an analysis beyond global significance, allowing the association between the gene-set and the phenotype to vary across the tumor space. At each location, the most significant linear combination is found using a geographically weighted shrunken covariance matrix and kernel function. Whether a fixed or adaptive bandwidth is determined based on a cross-validation cross procedure. Our proposed method is compared to the global version of linear combination test (LCT), bulk and random-forest based gene-set enrichment analyses using data created by the Visium Spatial Gene Expression technique on an invasive breast cancer tissue sample, as well as 144 different simulation scenarios.Results: In an illustrative example, the new geographically weighted linear combination test, GWLCT, identifies the cancer hallmark gene-sets that are significantly associated at each location with the five spatially continuous phenotypic contexts in the tumors defined by different well-known markers of cancer-associated fibroblasts. Scan statistics revealed clustering in the number of significant gene-sets. A spatial heatmap of combined significance over all selected gene-sets is also produced. Extensive simulation studies demonstrate that our proposed approach outperforms other methods in the considered scenarios, especially when the spatial association increases.Conclusion: Our proposed approach considers the spatial covariance of gene expression to detect the most significant gene-sets affecting a continuous phenotype. It reveals spatially detailed information in tissue space and can thus play a key role in understanding the contextual heterogeneity of cancer cells.
Collapse
Affiliation(s)
- Payam Amini
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
- School of Medicine, Keele University, Keele, Staffordshire, United Kingdom
| | - Morteza Hajihosseini
- School of Public Health, University of Alberta, Edmonton, AB, Canada
- Stanford Department of Urology, Center for Academic Medicine, Palo Alto, CA, United States
| | - Saumyadipta Pyne
- Health Analytics Network, Pittsburgh, PA, United States
- University of California, Santa Barbara, Santa Barbara, CA, United States
- *Correspondence: Saumyadipta Pyne, ; Irina Dinu,
| | - Irina Dinu
- School of Public Health, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Saumyadipta Pyne, ; Irina Dinu,
| |
Collapse
|
3
|
Evron E, Ben-David MA, Kaidar-Person O, Corn BW. Nonsurgical Options for Risk Reduction of Contralateral Breast Cancer in BRCA Mutation Carriers With Early-Stage Breast Cancer. J Clin Oncol 2023; 41:964-969. [PMID: 36306484 DOI: 10.1200/jco.22.01609] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Ella Evron
- Kaplan Hospital, Hadassah Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Merav A Ben-David
- Assuta Medical Center, Tel-Aviv, Faculty of Health Science, Ben Gurion University of the Negev, Be'er Sheva, Israel
| | - Orit Kaidar-Person
- Breast Cancer Radiation Therapy Unit, Sheba Medical Center, The Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | |
Collapse
|
4
|
Aristei C, Bölükbaşı Y, Kaidar-Person O, Pfeffer R, Arenas M, Boersma LJ, Ciabattoni A, Coles CE, Franco P, Krengli M, Leonardi MC, Marazzi F, Masiello V, Meattini I, Montero A, Offersen B, Trigo ML, Bourgier C, Genovesi D, Kouloulias V, Morganti AG, Meduri B, Pasinetti N, Pedretti S, Perrucci E, Rivera S, Tombolini V, Vidali C, Valentini V, Poortmans P. Ways to improve breast cancer patients' management and clinical outcome: The 2020 Assisi Think Tank Meeting. Crit Rev Oncol Hematol 2022; 177:103774. [PMID: 35917884 DOI: 10.1016/j.critrevonc.2022.103774] [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: 06/08/2021] [Revised: 07/19/2022] [Accepted: 07/29/2022] [Indexed: 10/16/2022] Open
Abstract
We report on the third Assisi Think Tank Meeting (ATTM) on breast cancer, a brainstorming project which involved European radiation and clinical oncologists who were dedicated to breast cancer research and treatment. Held on February 2020, the ATTM aimed at identifying key clinical questions in current clinical practice and "grey" areas requiring research to improve management and outcomes. Before the meeting, three key topics were selected: 1) managing patients with frailty due to either age and/or multi-morbidity; 2) stereotactic radiation therapy and systemic therapy in the management of oligometastatic disease; 3) contralateral breast tumour prevention in BCRA-mutated patients. Clinical practice in these areas was investigated by means of an online questionnaire. In the lapse period between the survey and the meeting, the working groups reviewed data, on-going studies and the clinical challenges which were then discussed in-depth and subjected to intense brainstorming during the meeting; research protocols were also proposed. Methodology, outcome of discussions, conclusions and study proposals are summarized in the present paper. In conclusion, this report presents an in-depth analysis of the state of the art, grey areas and controversies in breast cancer radiation therapy and discusses how to confront them in the absence of evidence-based data to guide clinical decision-making.
Collapse
Affiliation(s)
- Cynthia Aristei
- Radiation Oncology Section, Department of Medicine and Surgery, University of Perugia and Perugia General Hospital, Perugia, Italy.
| | - Yasemin Bölükbaşı
- Radiation Oncology Acıbadem Mehmet Ali Aydınlar University School of Medicine, Istanbul, Turkey
| | - Orit Kaidar-Person
- Breast Radiation Unit, Radiation Oncology, Sheba Medical Center, Ramat Gan, Israel
| | - Raphael Pfeffer
- Oncology Institute, Assuta Medical Center, Tel Aviv and Ben Gurion University Medical School, Israel
| | - Meritxell Arenas
- Universitat Rovira I Virgili, Radiation Oncology Department, Hospital Universitari Sant Hoan de Reus, IISPV, Spain
| | - Liesbeth J Boersma
- Radiation Oncology (Maastro), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Antonella Ciabattoni
- Department of Radiation Oncology, San Filippo Neri Hospital, ASL Rome 1, Rome, Italy
| | | | - Pierfrancesco Franco
- Depatment of Translational Medicine, University of Eastern Piedmont and Department of Radiation Oncology, 'Maggiore della Carità' University Hospital, Novara, Italy
| | - Marco Krengli
- Depatment of Translational Medicine, University of Eastern Piedmont and Department of Radiation Oncology, 'Maggiore della Carità' University Hospital, Novara, Italy
| | | | - Fabio Marazzi
- Unità Operativa di Radioterapia Oncologica, Dipartimento di Diagnostica per Immagine, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Gemelli IRCSS Roma, Italy
| | - Valeria Masiello
- Unità Operativa di Radioterapia Oncologica, Dipartimento di Diagnostica per Immagine, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Gemelli IRCSS Roma, Italy
| | - Icro Meattini
- Department of Experimental and Clinical Biomedical Sciences "M. Serio", University of Florence & Radiation Oncology Unit - Oncology Department, Azienda Ospedaliero Universitaria Careggi, Florence, Italy
| | - Angel Montero
- Department of Radiation Oncology, University Hospital HM Sanchinarro, HM Hospitales, Madrid, Spain
| | - Birgitte Offersen
- Department of Experimental Clinical Oncology, Department of Oncology, Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Maria Lurdes Trigo
- Service of Brachytherapy, Department of Image and Radioncology, Instituto Português Oncologia Porto Francisco Gentil E.P.E., Portugal
| | - Céline Bourgier
- Radiation Oncology, ICM-Val d'Aurelle, Univ Montpellier, Montpellier, France
| | - Domenico Genovesi
- Radiation Oncology, Ospedale Clinicizzato Chieti and University "G. d'Annunzio", Chieti, Italy
| | - Vassilis Kouloulias
- 2(nd) Department of Radiology, Radiotherapy Unit, Medical School, National and Kapodistrian University of Athens, Greece
| | - Alessio G Morganti
- Radiation Oncology, IRCCS Azienda Ospedaliero-Universitaria di Bologna; DIMES, Alma Mater Studiorum Bologna University; Bologna, Italy
| | - Bruno Meduri
- Radiation Oncology Unit, University Hospital of Modena, Modena, Italy
| | - Nadia Pasinetti
- Radiation Oncology Service, ASST Valcamonica Esine and Brescia University, Brescia, Italy
| | - Sara Pedretti
- Istituto del Radio "O.Alberti" - Spedali Civili Hospital and Brescia University, Brescia
| | | | - Sofia Rivera
- Radiation Oncology, Institut Gustave Roussy, Villejuif, France
| | - Vincenzo Tombolini
- Radiation Oncology, Department of Radiological, Oncological and Pathological Science, University "La Sapienza", Roma, Italy
| | - Cristiana Vidali
- former Senior Assistant Department of Radiation Oncology, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy
| | - Vincenzo Valentini
- Division of Radiation Oncology, IEO European Institute of Oncology, IRCCS, Milan, Italy
| | - Philip Poortmans
- Department of Radiation Oncology, Iridium Kankernetwerk, Antwerp, Belgium; University of Antwerp, Faculty of Medicine and Health Sciences, Antwerp, Belgium
| |
Collapse
|
5
|
Abdel-Razeq H, Tamimi F, Abujamous L, Abdel-Razeq R, Abunasser M, Edaily S, Abdulelah H, Khashabeh RA, Bater R. Rates of Variants of Uncertain Significance Among Patients With Breast Cancer Undergoing Genetic Testing: Regional Perspectives. Front Oncol 2022; 12:673094. [PMID: 35402282 PMCID: PMC8989924 DOI: 10.3389/fonc.2022.673094] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 02/25/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose Contrary to BRCA pathogenic variants, recommendations for management of variants of uncertain significance (VUS) are not clear and focus more on the patient’s family and personal history of cancer. Local and regional data on VUS are scarce. In this paper, we study patterns and frequency of VUS among breast cancer patients undergoing genetic testing. Patients and Methods Patients with breast cancer at high risk for pathogenic variants, as per the National Comprehensive Cancer Network (NCCN) guidelines, were tested at reference laboratories. Related surgical interventions were reviewed. Results Among a group of 1,197 patients with breast cancer who underwent genetic testing and counseling, 110 (9.2%) had VUS; most (n = 79, 71.8%) were in BRCA2. Median age (range) was 39 (25–66) years with 65 (59.1%) patients who were 40 years or younger at diagnosis. Among 103 patients with non-metastatic disease, 48 (46.6%) had breast-conserving surgery (BCS) while only 5 (4.9%) had bilateral mastectomies; all were due to bilateral disease and not prophylactic. VUS diagnosis was known prior to initial surgery in 34 (33.0%) patients; 11 (32.4%) of them had BCS only. Over the study period, only one VUS variant was upgraded to “likely positive.” The recent introduction of multiple-gene panel testing had resulted in a surge in VUS rate (22.2%) in genes other than BRCA1 or BRCA2, like PALB2, CHEK2, and ATM. Conclusions Rates of VUS are relatively high and increasing, mostly in non-BRCA1 or BRCA2, and this had no impact on the therapeutic or prophylactic surgical decisions. Adherence to guidelines is extremely important to avoid unnecessary procedures.
Collapse
Affiliation(s)
- Hikmat Abdel-Razeq
- Department of Medicine, King Hussein Cancer Center, Amman, Jordan.,School of Medicine, University of Jordan, Amman, Jordan
| | - Faris Tamimi
- Department of Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Lama Abujamous
- Department of Cell Therapy & Applied Genomic, King Hussein Cancer Center, Amman, Jordan
| | | | | | - Sara Edaily
- Department of Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Hazem Abdulelah
- Department of Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Razan Abu Khashabeh
- Department of Cell Therapy & Applied Genomic, King Hussein Cancer Center, Amman, Jordan
| | - Rayan Bater
- Department of Medicine, King Hussein Cancer Center, Amman, Jordan
| |
Collapse
|
6
|
Zhang L, Liu Z, Zhu J. In silico screening using bulk and single-cell RNA-seq data identifies RIMS2 as a prognostic marker in basal-like breast cancer: A retrospective study. Medicine (Baltimore) 2021; 100:e25414. [PMID: 33879671 PMCID: PMC8078249 DOI: 10.1097/md.0000000000025414] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 03/10/2021] [Indexed: 02/05/2023] Open
Abstract
Single-cell RNA-seq has become a powerful tool to understand tumor cell heterogenicity. This study tried to screen prognosis-related genes in basal-like breast tumors and evaluate their correlations with cellular states at the single-cell level.Bulk RNA-seq data of basal-like tumor cases from The Cancer Genome Atlas-Breast Cancer (TCGA-BRCA) and single-cell RNA-seq from GSE75688 were retrospectively reviewed. Kaplan-Meier survival curves, univariate and multivariate analysis based on Cox regression model were conducted for survival analysis. Gene set enrichment analysis (GSEA) and single-cell cellular functional state analysis were performed.Twenty thousand five hundred thirty genes with bulk RNA-seq data in TCGA were subjected to screening. Preliminary screening identified 10 candidate progression-related genes, including CDH19, AQP5, SDR16C5, NCAN, TTYH1, XAGE2, RIMS2, GZMB, LY6D, and FAM3B. By checking their profiles using single-cell RNA-seq data, only CDH19, SDR16C5, TTYH1, and RIMS2 had expression in primary triple-negative breast cancer (TNBC) cells. Prognostic analysis only confirmed that RIMS2 expression was an independent prognostic indicator of favorable progression free survival (PFS) (HR: 0.78, 95%: 0.64-0.95, P = .015). GSEA analysis showed that low RIMS2 group expression had genes significantly enriched in DNA Repair, and MYC Targets V2. Among the 89 basal-like cells, RIMS2 expression was negatively correlated with DNA repair and epithelial-to-mesenchymal transition (EMT).RIMS2 expression was negatively associated with DNA repair capability of basal-like breast tumor cells and might serve as an independent indicator of favorable PFS.
Collapse
Affiliation(s)
- Lingyun Zhang
- Department of Thyroid Surgery
- Laboratory of Thyroid and Parathyroid Disease, Frontiers Science Center for Disease-Related Molecular Network
| | - Zheng Liu
- Nursing Department, West China School of Nursing, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jingqiang Zhu
- Department of Thyroid Surgery
- Laboratory of Thyroid and Parathyroid Disease, Frontiers Science Center for Disease-Related Molecular Network
| |
Collapse
|
7
|
Remodeling of the ARID1A tumor suppressor. Cancer Lett 2020; 491:1-10. [PMID: 32738271 DOI: 10.1016/j.canlet.2020.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/06/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022]
Abstract
In recent years, AT-rich interactive domain-containing protein 1A (ARID1A) has been widely accepted as a bona fide tumor suppressor due to its essential role in preventing tumorigenesis and tumor progression in both mouse and human contexts. ARID1A shows high mutation frequencies in both cancers and preneoplastic lesions. The loss of ARID1A expression in cancer cells leads to increases in cell proliferation, invasion and migration and reductions in cell apoptosis and chemosensitivity. The tumor-suppressive role of ARID1A is mainly attributed to its regulation of gene transcription, which can be induced either directly by chromatin remodeling or indirectly by affecting histone modifications. ARID1A also acts independently of its cardinal transcription-regulating mechanisms, which include interfering with protein-protein interactions. Interestingly, nonmutational mechanisms, such as regulation by DNA hypermethylation, microRNAs, and ubiquitinases/deubiquitinases, have provided another perspective on ARID1A inactivation in cancer. Since the critical tumor-suppressive role of ARID1A has been revealed, several studies have attempted to identify synthetic lethal targets with ARID1A mutation/inactivation as an alternative strategy for cancer treatment.
Collapse
|
8
|
Ye T, Wan X, Li J, Feng J, Guo J, Li G, Liu J. The Clinical Significance of PPEF1 as a Promising Biomarker and Its Potential Mechanism in Breast Cancer. Onco Targets Ther 2020; 13:199-214. [PMID: 32021267 PMCID: PMC6955604 DOI: 10.2147/ott.s229432] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 12/17/2019] [Indexed: 12/11/2022] Open
Abstract
Background Breast cancer (BC) is the leading cause of malignancy death in females worldwide. While intense efforts have been made to elucidate the pathogeny, the molecular mechanism of BC remains elusive. Thus, this study aimed to investigate the role of PPEF1 in the progression of BC and further explore the better clinical significance. Methods The diagnostic and prognostic values of elevated PPEF1 expression in BC were unveiled via public databases analysis. In addition, Gene Ontology (GO), Gene Set Enrichment Analysis (GSEA) and Protein–protein interaction (PPI) analysis were performed to explore the potential functions and molecular mechanisms of PPEF1 in BC progression. Experimentally, transwell and CCK-8 assays were carried out to estimate the effects of PPEF1 on the BC metastasis. Meanwhile, the differential expressions of PPEF1 in paraffin-embedded tissues and serum samples were, respectively, analyzed by Immunohistochemical (IHC) analysis and enzyme-linked immunosorbent assay (ELISA) kit. Results The transcriptional levels of PPEF1 were higher in BC than in normal breast tissues or adjacent normal tissues. Moreover, survival analysis revealed that higher PPEF1 expression was negatively associated with overall survival (OS), all events-free (AE-free) and metastatic recurrence-free (MR-free) survival, and further was an independent risk factor of unfavorable prognosis in BC patients. Additionally, the present study provided the first evidence that PPEF1 participated in multiple biological processes and underly signaling pathways involving in tumorigenesis and development of BC. Furthermore, PPEF1 promotes the BC progression and can be used as a noninvasive diagnostic marker. Noteworthy, the combined determination of serum PPEF1 and traditional tumor markers can enhance diagnostic accuracy thus is of vital importance in the early diagnosis of BC. Conclusion PPEF1 exerted a tumorigenic role and involved in molecular mechanism of tumorigenesis in BC which served as a promising biomarker for prognosis and diagnosis.
Collapse
Affiliation(s)
- Ting Ye
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Xue Wan
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jingyuan Li
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jia Feng
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jinglan Guo
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Guangrong Li
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jinbo Liu
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| |
Collapse
|
9
|
Ben-David MA, Corn BW, Evron E, Goldberg H, Pfeffer RM, Abdah-Bortnyak R, Matceyevsky D, Weinstein Y, Golan O, Sklair-Levy M. Prophylactic breast irradiation reduces background parenchymal enhancement (BPE) on MRI: A secondary analysis. Breast 2019; 49:70-73. [PMID: 31734591 PMCID: PMC7375590 DOI: 10.1016/j.breast.2019.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/07/2019] [Accepted: 10/22/2019] [Indexed: 01/01/2023] Open
Abstract
PURPOSE We recently showed that prophylactic breast irradiation (PBI) reduces the risk of contralateral breast cancer in BRCA mutation carriers undergoing treatment for early breast cancer. It has been suggested that Background Parenchymal Enhancement (BPE) may be a biomarker for increased risk of breast cancer. METHODS For participants in the trial we reviewed the MRI prior to enrollment and following radiation treatment and scored the contralateral breast for BPE and density. RESULTS Significant reduction of BPE was more commonly noted following PBI (p = 0.011) compared to the control group. CONCLUSION Reduction of BPE by PBI may contribute to its prophylactic effect.
Collapse
Affiliation(s)
- Merav A Ben-David
- Department of Radiation Oncology, Sheba Medical Center, Ramat-Gan, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Benjamin W Corn
- Shaare Zedek Medical Center, Jerusalem, Israel; Hadassah Medical School, The Hebrew University, Jerusalem, Israel.
| | - Ella Evron
- Oncology, Kaplan Medical Institute, Rehovot, Israel; Hadassah Medical School, The Hebrew University, Jerusalem, Israel
| | | | | | - Roxoliana Abdah-Bortnyak
- Oncology Division, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | | | | | - Orit Golan
- Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - Miri Sklair-Levy
- Department of Radiation Oncology, Sheba Medical Center, Ramat-Gan, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
| |
Collapse
|