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Pinto AE, Matos J, Pereira T, Silva GL, André S. DNA aneuploidy identifies a subset of Luminal subtype breast carcinoma patients with worse clinical outcome. Pathol Res Pract 2023; 246:154513. [PMID: 37167811 DOI: 10.1016/j.prp.2023.154513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 05/05/2023] [Indexed: 05/13/2023]
Abstract
AIM In breast carcinoma (BC), the relationship between the ploidy pattern and molecular subtyping is still unknown. We aim to investigate the prognostic impact of DNA ploidy within molecular subtypes of a large cohort of BC patients. METHODS The series involved 520 BC patients with no neoadjuvant therapy and a median follow-up of 115.5 months. Immunohistochemical assessment of hormonal receptors, ERBB2 (HER2) status and Ki67 proliferative activity was the basis of the surrogate molecular subtyping. Ploidy was evaluated by DNA flow cytometry in fresh/frozen tumour samples. Kaplan-Meier (K-M) survival estimation was used for prognostic statistical analysis. RESULTS Luminal A subtype had the lowest prevalence of disease recurrences (23.6 %) and deaths from disease (18.3 %), while Luminal B (42.2 %/37.9 %), Triple-negative (46.4 %/40.6 %), and HER2-positive (55.9 %/50.0 %) subtypes had the highest. The Triple-positive subtype shows an intermediate/low frequency of adverse events (29.4 % of disease recurrences and 17.6 % of deaths from disease). Luminal A tumours were mostly diploid (55.3 %), while Triple-negative and HER2-positive tumours showed a high incidence of aneuploidy (82.6 % and 88.2 %, respectively). Luminal B and Triple-positive tumours had an intermediate percentage of aneuploidy (63.8 % and 70.6 %, respectively). K-M survival curves showed that DNA aneuploidy is significantly associated with shorter disease-free survival and overall survival in Luminal A and Luminal B molecular subtypes. CONCLUSION DNA aneuploidy identifies a subset of Luminal BC patients with worse clinical outcome, potentially eligible for more aggressive adjuvant therapy.
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Affiliation(s)
- António E Pinto
- Department of Pathology, Portuguese Institute of Oncology of Lisbon, Portugal.
| | - João Matos
- Department of Pathology, Portuguese Institute of Oncology of Lisbon, Portugal
| | - Teresa Pereira
- Department of Pathology, Portuguese Institute of Oncology of Lisbon, Portugal
| | - Giovani L Silva
- Department of Mathematics, Higher Technical Institute, University of Lisbon, Portugal; Centre for Statistics and Applications, University of Lisbon, Portugal
| | - Saudade André
- Department of Pathology, Portuguese Institute of Oncology of Lisbon, Portugal
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2
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Min J, Pan X, Lv G. The circRNA circ_0000291 acts as a sponge of microRNA 326 to regulate E26 transformation-specific sequence-1 expression and promote breast cancer progression. Pathol Int 2020; 70:953-964. [PMID: 32869935 DOI: 10.1111/pin.13011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 08/06/2020] [Accepted: 08/11/2020] [Indexed: 12/13/2022]
Abstract
Accumulating studies authenticate that circular RNAs (circRNAs) are involved in the progression of cancers. However, their role in breast cancer (BC) remains largely unknown. In this study, real-time polymerase chain reaction was employed to detect the circ_0000291 and miR-326 expressions in BC tissues and cells. The correlation between the expression level of circ_0000291 and clinicopathological parameters of BC patients was analyzed. Western blot was used to detect the expression of E26 transformation-specific sequence-1 (ETS1), E-cadherin, N-cadherin and Vimentin in BC cells. Cell proliferation was measured using the cell counting kit-8 assay and the bromodeoxyuridine assay. Cell migration and invasion were detected by Transwell assay. The interactions between circ_0000291 and miR-326, miR-326 and ETS1 were verified using bioinformatics prediction, the dual-luciferase reporter gene assay or/and RNA binding protein immunoprecipitation assay. We demonstrated that circ_0000291 was significantly upregulated in BC, and its high expression was positively correlated with T stage and local lymph node metastasis. Functional assays validated that circ_0000291 promoted BC cell proliferation, migration and invasion. The mechanism studies indicated that circ_0000291 could decoy miR-326 and in turn upregulate the expression of ETS1. In conclusion, circ_0000291 is the novel oncogenic circRNA and promotes BC progression via modulating the miR-326/ETS1 axis.
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Affiliation(s)
- Jie Min
- Department of Breast and Thyroid, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xue Pan
- Editorial Department of Chinese Journal of Endocrine Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Gang Lv
- Department of Breast and Thyroid, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
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3
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Halilovic A, Verweij DI, Simons A, Stevens-Kroef MJPL, Vermeulen S, Elsink J, Tops BBJ, Otte-Höller I, van der Laak JAWM, van de Water C, Boelens OBA, Schlooz-Vries MS, Dijkstra JR, Nagtegaal ID, Tol J, van Cleef PHJ, Span PN, Bult P. HER2, chromosome 17 polysomy and DNA ploidy status in breast cancer; a translational study. Sci Rep 2019; 9:11679. [PMID: 31406196 PMCID: PMC6690925 DOI: 10.1038/s41598-019-48212-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 07/24/2019] [Indexed: 01/19/2023] Open
Abstract
Breast cancer treatment depends on human epidermal growth factor receptor-2 (HER2) status, which is often determined using dual probe fluorescence in situ hybridisation (FISH). Hereby, also loss and gain of the centromere of chromosome 17 (CEP17) can be observed (HER2 is located on chromosome 17). CEP17 gain can lead to difficulty in interpretation of HER2 status, since this might represent true polysomy. With this study we investigated whether isolated polysomy is present and how this effects HER2 status in six breast cancer cell lines and 97 breast cancer cases, using HER2 FISH and immunohistochemistry, DNA ploidy assessment and multiplex ligation dependent probe amplification. We observed no isolated polysomy of chromosome 17 in any cell line. However, FISH analysis did show CEP17 gain in five of six cell lines, which reflected gains of the whole chromosome in metaphase spreads and aneuploidy with gain of multiple chromosomes in all these cases. In patients' samples, gain of CEP17 indeed correlated with aneuploidy of the tumour (91.1%; p < 0.001). Our results indicate that CEP17 gain is not due to isolated polysomy, but rather due to widespread aneuploidy with gain of multiple chromosomes. As aneuploidy is associated with poor clinical outcome, irrespective of tumour grade, this could improve future therapeutic decision making.
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Affiliation(s)
- Altuna Halilovic
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands. .,Department of Tumor Immunology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands.
| | - Dagmar I Verweij
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Annet Simons
- Department of Human Genetics, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | | | - Susan Vermeulen
- Department of Human Genetics, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Janet Elsink
- Department of Human Genetics, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Bastiaan B J Tops
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Irene Otte-Höller
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | | | - Carlijn van de Water
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | | | | | - Jeroen R Dijkstra
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Iris D Nagtegaal
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Jolien Tol
- Department of Medical Oncology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands.,Department of Medical Oncology, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
| | - Patricia H J van Cleef
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Paul N Span
- Radiotherapy & OncoImmunology laboratory, Department of Radiation Oncology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
| | - Peter Bult
- Department of Pathology, Radboud university medical center (Radboudumc), Nijmegen, The Netherlands
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4
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Lin F, Xie YJ, Zhang XK, Huang TJ, Xu HF, Mei Y, Liang H, Hu H, Lin ST, Luo FF, Lang YH, Peng LX, Qian CN, Huang BJ. GTSE1 is involved in breast cancer progression in p53 mutation-dependent manner. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:152. [PMID: 30961661 PMCID: PMC6454633 DOI: 10.1186/s13046-019-1157-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 03/29/2019] [Indexed: 12/24/2022]
Abstract
Background With the rapid development of the high throughput detection techniques, tumor-related Omics data has become an important source for studying the mechanism of tumor progression including breast cancer, one of the major malignancies worldwide. A previous study has shown that the G2 and S phase-expressed-1 (GTSE1) can act as an oncogene in several human cancers. However, its functional roles in breast cancer remain elusive. Method In this study, we analyzed breast cancer data downloaded from The Cancer Genome Atlas (TCGA) databases and other online database including the Oncomine, bc-GenExMiner and PROGgeneV2 database to identify the molecules contributing to the progression of breast cancer. The GTSE1 expression levels were investigated using qRT-PCR, immunoblotting and IHC. The biological function of GTSE1 in the growth, migration and invasion of breast cancer was examined in MDA-MB-231, MDA-MB-468 and MCF7 cell lines. The in vitro cell proliferative, migratory and invasive abilities were evaluated by MTS, colony formation and transwell assay, respectively. The role of GTSE1 in the growth and metastasis of breast cancer were revealed by in vivo investigation using BALB/c nude mice. Results We showed that the expression level of GTSE1 was upregulated in breast cancer specimens and cell lines, especially in triple negative breast cancer (TNBC) and p53 mutated breast cancer cell lines. Importantly, high GTSE1 expression was positively correlated with histological grade and poor survival. We demonstrated that GTSE1 could promote breast cancer cell growth by activating the AKT pathway and enhance metastasis by regulating the Epithelial-Mesenchymal transition (EMT) pathway. Furthermore, it could cause multidrug resistance in breast cancer cells. Interestingly, we found that GTSE1 could regulate the p53 function to alter the cell cycle distribution dependent on the mutation state of p53. Conclusion Our results reveal that GTSE1 played a key role in the progression of breast cancer, indicating that GTSE1 could serve as a novel biomarker to aid in the assessment of the prognosis of breast cancer. Electronic supplementary material The online version of this article (10.1186/s13046-019-1157-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fen Lin
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Yu-Jie Xie
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Guangdong Medical University, Zhanjiang, 524023, People's Republic of China
| | - Xin-Ke Zhang
- Department of pathology, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Tie-Jun Huang
- Department of Nuclear Medicine, The Second People's Hospital of Shenzhen, Shenzhen, People's Republic of China
| | - Hong-Fa Xu
- Zhuhai Precision Medicine Center, Zhuhai People's Hospital Affiliated with Jinan University, Zhuhai, Guangdong, 519000, People's Republic of China
| | - Yan Mei
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Hu Liang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Hao Hu
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510060, People's Republic of China
| | - Si-Ting Lin
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Fei-Fei Luo
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Yan-Hong Lang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Li-Xia Peng
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Chao-Nan Qian
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China. .,Department of Nasopharyngeal Carcinoma, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China.
| | - Bi-Jun Huang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.
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5
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Effect of Taraxacum officinale extract on PI3K/Akt pathway in DMBA-induced breast cancer in albino rats. Biosci Rep 2018; 38:BSR20180334. [PMID: 30126855 PMCID: PMC6435453 DOI: 10.1042/bsr20180334] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/22/2018] [Accepted: 06/30/2018] [Indexed: 12/17/2022] Open
Abstract
Background: Breast cancer is one of the most prevalent types of cancer and a leading cause of death in women. Materials and methods: An experimental model of breast cancer was induced in female albino rats using single intragastric dose of 7, 12 dimethylbenz (α) anthracene (DMBA) in sesame oil (50 mg/kg b.wt). Four months after DMBA administration, incidence of breast cancer was confirmed by measuring cancer antigen 15-3 (CA15-3) serum levels. Taraxacum officinale ssp. officinale root extract (TOE) was administered in a dose of 500 mg/kg by oral gavage for 4 weeks after breast cancer incidence. Level of CA15-3 as one of the best known breast tumor markers was elevated in all positive breast cancer rats. The genetic effects of TOE on Pdk1–Akt1–Pik3r1–Map3k1–Erbb2–PIk3ca using semi-quantitative RT-PCR analysis were evaluated. In parallel, histopathological changes and immunohistochemical expression of Bcl2 in mammary gland tissues were examined. Results: Level of CA15-3 was normalized in DMBA group administered TOE for 4 weeks. Administration of DMBA increased expression of Pdk1, Akt1, Pik3r1, Map3k1, Erbb2 and PIk3ca. Treatment with TOE normalized the up-regulated mRNA for all examined genes except Pik3ra that was up-regulated. Mammary gland tissues of DMBA group showed excessive proliferation of lining epithelium of acini and ductules with hyperchromatic nuclei with excessive immunostaining of Bcl2 in the proliferated epithelium that was ameliorated by TOE administration. In conclusion, TOE regulated PI3K and Akt pathways involved in suppression of breast cancer growth and proliferation. TOE is effective as anticancer herbal agent.
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6
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Garcia J, Lizcano F. Kdm4c is Recruited to Mitotic Chromosomes and Is Relevant for Chromosomal Stability, Cell Migration and Invasion of Triple Negative Breast Cancer Cells. BREAST CANCER-BASIC AND CLINICAL RESEARCH 2018; 12:1178223418773075. [PMID: 30083054 PMCID: PMC6073829 DOI: 10.1177/1178223418773075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/04/2018] [Indexed: 01/23/2023]
Abstract
Members of the jumonji-containing lysine demethylase protein family have been associated with cancer development, although their specific roles in the evolution of tumor cells remain unknown. This work examines the effects of lysine demethylase 4C (KDM4C) knockdown on the behavior of a triple-negative breast cancer cell line. KDM4C expression was knocked-down by siRNA and analyzed by Western blot and immunofluorescence. HCC38 cell proliferation was examined by MTT assay, while breast cancer cells’ migration and invasion were tested in Transwell format by chemotaxis. Immunofluorescence assays showed that KDM4C, which is a key protein for modulating histone demethylation and chromosome stability through the distribution of genetic information, is located at the chromosomes during mitosis. Proliferation assays demonstrated that KDM4C is important for cell survival, while Transwell migration and invasion assays indicated that this protein is relevant for cancer progression. These data indicate that KDM4C is relevant for breast cancer progression and highlight its importance as a potential therapeutic target.
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Affiliation(s)
- Jeison Garcia
- Doctorate in Biociences, Center of Biomedical Research Universidad de La Sabana-CIBUS, School of Medicine, Universidad de La Sabana, Chía, Colombia
| | - Fernando Lizcano
- Doctorate in Biociences, Center of Biomedical Research Universidad de La Sabana-CIBUS, School of Medicine, Universidad de La Sabana, Chía, Colombia
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7
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The Stress-Inducible Peroxidase TSA2 Underlies a Conditionally Beneficial Chromosomal Duplication in Saccharomyces cerevisiae. G3-GENES GENOMES GENETICS 2017; 7:3177-3184. [PMID: 28743806 PMCID: PMC5592942 DOI: 10.1534/g3.117.300069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Although chromosomal duplications are often deleterious, in some cases they enhance cells’ abilities to tolerate specific genetic or environmental challenges. Identifying the genes that confer these conditionally beneficial effects to particular chromosomal duplications can improve our understanding of the genetic and molecular mechanisms that enable certain aneuploidies to persist in cell populations and contribute to disease and evolution. Here, we perform a screen for spontaneous mutations that improve the tolerance of haploid Saccharomyces cerevisiae to hydrogen peroxide. Chromosome IV duplication is the most frequent mutation, as well as the only change in chromosomal copy number seen in the screen. Using a genetic mapping strategy that involves systematically deleting segments of a duplicated chromosome, we show that the chromosome IV’s duplication effect is largely due to the generation of a second copy of the stress-inducible cytoplasmic thioredoxin peroxidase TSA2. Our findings add to a growing body of literature that shows the conditionally beneficial effects of chromosomal duplication are typically mediated by a small number of genes that enhance tolerance to specific stresses when their copy numbers are increased.
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8
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Zhu WJ, Chen X, Wang YW, Liu HT, Ma RR, Gao P. MiR-1268b confers chemosensitivity in breast cancer by targeting ERBB2-mediated PI3K-AKT pathway. Oncotarget 2017; 8:89631-89642. [PMID: 29163776 PMCID: PMC5685697 DOI: 10.18632/oncotarget.20099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/12/2017] [Indexed: 12/13/2022] Open
Abstract
Chemoresistance represents a major obstacle to effective therapy for breast cancer. Emerging evidences associated aberrantly expressed miRNAs with tumor development and chemoresistance. MiR-1268b has never been studied in any cancers before, and its roles in mediating tumor progression and drug resistance are still unclear. Selected from miRNA microarray and confirmed by real-time quantitative PCR (RT-qPCR), miR-1268b was found to be significantly upregulated in drug sensitive and ERBB2 negative tissues, as well as in breast cancer patients with low clinical stage. And miR-1268b had a higher expression in chemosensitive breast cancer cell lines, compared with the chemoresistant cell line. Moreover, the results revealed that miR-1268b induced breast cancer cell apoptosis and increased cell chemosensitivity. ERBB2 was demonstrated to be the target gene of miR-1268b by dual-luciferase reporter assays, western blot, and immunocytochemistry. Furthermore, PI3KCA, AKT, BCL2 in the ERBB2-PI3K-AKT signaling pathway were found to be downstream effectors of miR-1268b. In conclusion, miR-1268b increased chemosensitivity, at least in part, via modulation of PI3K-AKT pathway by targeting ERBB2. MiR-1268b may serve as a potential therapeutic target for patients with breast cancers.
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Affiliation(s)
- Wen-Jie Zhu
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
| | - Xu Chen
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
| | - Ya-Wen Wang
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
| | - Hai-Ting Liu
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
| | - Ran-Ran Ma
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
| | - Peng Gao
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, P.R. China.,Department of Pathology, School of Medicine, Shandong University, Jinan, P.R. China
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9
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Pinto AE, Pereira T, Silva GL, André S. Prognostic relevance of DNA flow cytometry in breast cancer revisited: The 25-year experience of the Portuguese Institute of Oncology of Lisbon. Oncol Lett 2017; 13:2027-2033. [PMID: 28454358 DOI: 10.3892/ol.2017.5718] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/16/2016] [Indexed: 01/08/2023] Open
Abstract
The potential prognostic significance of DNA flow cytometric measurements (DNA ploidy and S-phase fraction) in breast cancer remains in dispute. Inconclusive data, primarily due to the lack of consistent standardization and quality control programs, have limited its translation into clinical practice. The aim of the present review, based on the 25-year experience of the Portuguese Institute of Oncology of Lisbon, is to assess the clinical relevance and application of DNA flow cytometry for the prognosis of breast cancer. Overall, data from Portuguese Institute of Oncology of Lisbon indicate that DNA flow cytometry provides significant prognostic information that is biologically relevant and clinically useful for the management of patients with breast cancer. Furthermore, this data has demonstrated the independent value of DNA aneuploidy as a prognostic indicator of poor clinical outcome in various subgroups of patients with early or locally advanced breast cancer at short- and long-term follow-up. Notably, aneuploidy identifies subsets of patients with grade (G)1 or G2 tumours who exhibit a poor clinical outcome. These patients may benefit from adjuvant chemotherapy, particularly those with luminal A and luminal B/human epidermal growth factor-2-negative endocrine-responsive breast cancer. In conclusion, data from Portuguese Institute of Oncology of Lisbon reinforces the clinical importance and utility of DNA flow cytometric analysis, particularly DNA ploidy, in the prognostic assessment and therapeutic planning for patients with breast cancer.
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Affiliation(s)
- António E Pinto
- Pathological Anatomy Service, Portuguese Institute of Oncology of Lisbon, Lisbon 1099-023, Portugal
| | - Teresa Pereira
- Pathological Anatomy Service, Portuguese Institute of Oncology of Lisbon, Lisbon 1099-023, Portugal
| | - Giovani L Silva
- Department of Mathematics, Centre for Statistics and Applications, Higher Technical Institute, University of Lisbon, Lisbon 1049-001, Portugal
| | - Saudade André
- Pathological Anatomy Service, Portuguese Institute of Oncology of Lisbon, Lisbon 1099-023, Portugal
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10
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Xu J, Huang L, Li J. DNA aneuploidy and breast cancer: a meta-analysis of 141,163 cases. Oncotarget 2016; 7:60218-60229. [PMID: 27528028 PMCID: PMC5312380 DOI: 10.18632/oncotarget.11130] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/19/2016] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND & AIMS DNA ploidy, a DNA flow cytometry parameter, reflects tumor cell cycle. In breast cancer (BC), ploidy status characterizes genotypic stability and potential metastatic capacity. It is suggested that aneuploidy is an independent prognosticator for BC patients and could aid for individualized medicine. There are extensive studies concerning the prognostic significance of DNA aneuploidy, however, its clinical utility remains controversial. Herein we conducted a meta-analysis to determine the correlation between DNA ploidy status and BC characteristics and survival. METHODS The electronic databases PubMed, EMBASE, and Web of Science were searched for relevant studies. The major investigated parameters were the BC aneuploidy rates in relation to tumor stage, size, lymph node metastasis, grading, estrogen receptor (ER) status, disease-free survival (DFS), and overall survival (OS). Hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) for DFS and OS were extracted from each study before meta-analyzed. Risk ratios (RRs) were computed using the fixed-effect or random-effects model according to data heterogeneity, and the Mantel-Haenszel or the inverse-variance method was adopted where appropriate to obtain pooled estimates using RevMan 5.3. The Egger's test was conducted with Stata 11. RESULTS Pooled analyses of data from 29 studies involving a total of 141,163 cases showed that BC patients with more advanced tumors (stage I vs. stages II-IV, RR=0.84; 95% CI, 0.74 to 0.96; P=0.01), larger tumors (≤2 cm vs. >2 cm: RR=0.82; 95% CI, 0.77 to 0.87; P<0.00001), lymph node metastasis (pN0 vs. pN1-3: RR=0.85; 95% CI, 0.83 to 0.87, P<0.00001), poorer tumor proliferation (G2 vs. G1: RR=1.58; 95% CI, 1.40 to 1.79; P<0.00001; G3 vs. G1: RR=2.17; 95% CI, 1.77 to 2.67; P<0.00001; G3 vs. G2: RR=1.41; 95% CI, 1.25 to 1.60; P<0.00001), and ER- status (ER-vs. ER+: RR=1.32; 95% CI, 1.22 to 1.43; P<0.00001) were significantly more frequently aneuploid. BC patients with diploid tumors had better clinical outcomes than those with aneuploid cancers. The pooled HR estimates were0.73 (P<0.0001) for DFS and 0.72 (P=0.0001) for OS, respectively. CONCLUSION This meta-analysis implies that DNA aneuploidy is a significant predictor for BC progression and survival, and should be focused on in the therapeutic planning.
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Affiliation(s)
- Jing Xu
- Department of Medical Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lei Huang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jun Li
- Department of Medical Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- Department of Tumor Cytology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
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11
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Kryukova E, Kryukov F, Hajek R. Centrosome amplification and clonal evolution in multiple myeloma: Short review. Crit Rev Oncol Hematol 2015; 98:116-21. [PMID: 26589397 DOI: 10.1016/j.critrevonc.2015.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 09/14/2015] [Accepted: 10/28/2015] [Indexed: 12/11/2022] Open
Abstract
Multiple myeloma (MM) is composed of an array of multiple clones, each potentially associated with different clinical behavior. Previous studies focused on clinical implication of centrosome amplification (CA) in MM show contradictory results. It seems that the role of CA as well as CA formation in MM differ from other malignancies. This has brought about a question about the role of CA positive clone which is--is it going to be a more aggressive clone evolutionally arising under pressure of negative conditions or can CA serve as a marker of cell abnormality and lead to cell death and further elimination of this damaged subpopulation? This current review is devoted to the discussion of the existence of MM subclones with centrosome amplification (CA), its evolutionary behaviour within intraclonal heterogeneity as well as its potential impact on the disease progression and MM treatment.
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Affiliation(s)
- Elena Kryukova
- Department of Haematooncology, Faculty of Medicine, University of Ostrava, Czech Republic; Department of Haematooncology, University Hospital Ostrava, Czech Republic
| | - Fedor Kryukov
- Department of Haematooncology, Faculty of Medicine, University of Ostrava, Czech Republic; Department of Haematooncology, University Hospital Ostrava, Czech Republic.
| | - Roman Hajek
- Department of Haematooncology, Faculty of Medicine, University of Ostrava, Czech Republic; Department of Haematooncology, University Hospital Ostrava, Czech Republic
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