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Ren X, Cui H, Dai L, Chang L, Liu D, Yan W, Zhao X, Kang H, Ma X. PIK3CA mutation-driven immune signature as a prognostic marker for evaluating the tumor immune microenvironment and therapeutic response in breast cancer. J Cancer Res Clin Oncol 2024; 150:119. [PMID: 38466449 PMCID: PMC10927816 DOI: 10.1007/s00432-024-05626-4] [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: 08/02/2023] [Accepted: 01/16/2024] [Indexed: 03/13/2024]
Abstract
PURPOSE Gene mutations drive tumor immune microenvironment (TIME) heterogeneity, in turn affecting prognosis and immunotherapy efficacy. PIK3CA is the most frequently mutated gene in breast cancer (BC), yet its relevance to BC prognosis remains controversial. Herein, we sought to determine the impact of PIK3CA mutation-driven immune genes (PDIGs) on BC prognosis in relation to TIME heterogeneity. METHODS PIK3CA mutation characteristics were compared and verified between the TCGA-BRCA dataset and a patient cohort from our hospital. PIK3CA mutation-driven differentially expressed genes were identified for consensus clustering and weighted gene co-expression network analysis to select the modules most relevant to the immune subtype. Thereafter, the two were intersected to obtain PDIGs. Univariate Cox, LASSO, and multivariate Cox regression analyses were sequentially performed on PDIGs to obtain a PIK3CA mutation-driven immune signature (PDIS), which was then validated using the Gene Expression Omnibus (GEO) database. Differences in functional enrichment, mutation landscape, immune infiltration, checkpoint gene expression, and drug response were compared between different risk groups. RESULTS PIK3CA mutation frequencies in the TCGA and validation cohorts were 34.49% and 40.83%, respectively. PIK3CA mutants were significantly associated with ER, PR, and molecular BC subtypes in our hospital cohort. The PDIS allowed for effective risk stratification and exhibited prognostic power in TCGA and GEO sets. The low-risk patients exhibited greater immune infiltration, higher expression of common immune checkpoint factors, and lower scores for tumor immune dysfunction and exclusion. CONCLUSION The PDIS can be used as an effective prognostic model for predicting immunotherapy response to guide clinical decision-making.
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Affiliation(s)
- Xueting Ren
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hanxiao Cui
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Luyao Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Lidan Chang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Dandan Liu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Wenyu Yan
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xuyan Zhao
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Huafeng Kang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Xiaobin Ma
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Potential Impact of PI3K-AKT Signaling Pathway Genes, KLF-14, MDM4, miRNAs 27a, miRNA-196a Genetic Alterations in the Predisposition and Progression of Breast Cancer Patients. Cancers (Basel) 2023; 15:cancers15041281. [PMID: 36831624 PMCID: PMC9954638 DOI: 10.3390/cancers15041281] [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: 01/09/2023] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Genome-wide association studies have reported link between SNPs and risk of breast cancer. This study investigated the association of the selected gene variants by predicting them as possible target genes. Molecular technique advances with the availability of whole-exome sequencing (WES), now offer opportunities for simultaneous investigations of many genes. The experimental protocol for PI3K, AKT-1, KLF-14, MDM4, miRNAs 27a, and miR-196a genotyping was done by ARMS-PCR and sanger sequencing. The novel and known gene variants were studied by Whole-exome sequencing using Illumina NovaSeq 6000 platform. This case control study reports significant association between BC patients, healthy controls with the polymorphic variants of PI3K C > T, AKT-1 G > A KLF 14 C > T, MDM4 A > G, miR-27a A > G, miR-196a-2 C > T genes (p < 0.05). MDM4 A > G genotypes were strongly associated with BC predisposition with OR 2.08 & 2.15, p < 0.05) in codominant and dominant models respectively. MDM4 A allele show the same effective (OR1.76, p < 0.05) whereas it remains protective in recessive model for BC risk. AKT1G > A genotypes were strongly associated with the BC susceptibility in all genetic models whereas PI3K C > T genotypes were associated with breast cancer predisposition in recessive model OR 6.96. Polymorphic variants of KLF-14 A > G, MDM4G > A, MiR-27aA >G, miR-196a-C > T were strongly associated with stage, tamoxifen treatment. Risk variants have been reported by whole exome sequencing in our BC patients. It was concluded that a strong association between the PI3K-AKT signaling pathway gene variants with the breast cancer susceptibility and progression. Similarly, KLF 14-AA, MDM4-GA, miR27a-GG and miR-196a-CT gene variants were associated with the higher risk probability of BC and were strongly correlated with staging of the BC patients. This study also reported Low, novel, and intermediate-genetic-risk variants of PI3K, AKT-1, MDM4G & KLF-14 by utilizing whole-exome sequencing. These variants should be further investigated in larger cohorts' studies.
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Ben Rekaya M, Sassi F, Saied E, Bel Haj Kacem L, Mansouri N, Zarrouk S, Azouz S, Rammeh S. PIK3CA mutations in breast cancer: A Tunisian series. PLoS One 2023; 18:e0285413. [PMID: 37195967 DOI: 10.1371/journal.pone.0285413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 04/23/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND The aim of this study was to analyze PIK3CA mutations in exons 9 and 20 in breast cancers (BCs) and their association with clinicopathological characteristics. METHODS Mutational analysis of PIK3CA exon 9 and 20 was performed by Sanger sequencing in 54 primary BCs of Tunisian women. The associations of PIK3CA mutations with clinicopathological characteristics were analyzed. RESULTS Fifteen exon 9 and exon 20 PIK3CA variants were identified in 33/54 cases (61%). PIK3CA mutations including pathogenic (class 5/Tier I) or likely pathogenic (class 4/Tier II) occurred in 24/54 cases (44%): 17/24 cases (71%) in exon 9, 5/24 cases (21%) in exon 20 and 2/24 cases (8%) in both exons. Of these 24 cases, 18 (75%) carried at least one of the three hot spot mutations: E545K (in 8 cases), H1047R (in 4 cases), E542K (in 3 cases), E545K/E542K (in one case), E545K/H1047R (in one case) and P539R/H1047R (in one case). Pathogenic PIK3CA mutations were associated with negative lymph node status (p = 0.027). Age distribution, histological SBR tumor grading, estrogen and progesterone receptors, human epidermal growth factor receptor 2, and molecular classification were not correlated with PIK3CA mutations (p > 0.05). CONCLUSION The frequency of somatic PIK3CA mutations in BCs of Tunisian women is slightly higher than that of BCs of Caucasian women and more observed in exon 9 than in exon 20. PIK3CA mutated status is associated with negative lymph node status. These data need to be confirmed in larger series.
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Affiliation(s)
- Mariem Ben Rekaya
- Faculty of Medicine of Tunis, UR17ES15, University Tunis El Manar, Tunis, Tunisia
| | - Farah Sassi
- Pathology Department, Charles Nicolle Hospital, Tunis, Tunisia
| | - Essya Saied
- Faculty of Medicine of Tunis, UR17ES15, University Tunis El Manar, Tunis, Tunisia
| | - Linda Bel Haj Kacem
- Faculty of Medicine of Tunis, UR17ES15, University Tunis El Manar, Tunis, Tunisia
- Pathology Department, Charles Nicolle Hospital, Tunis, Tunisia
| | - Nada Mansouri
- Pathology Department, Military Hospital, Tunis, Tunisia
| | - Sinda Zarrouk
- Pasteur Institute of Tunis, Genomics Platform, University of Tunis El Manar Tunis, Tunisia
| | - Saifeddine Azouz
- Pasteur Institute of Tunis, Genomics Platform, University of Tunis El Manar Tunis, Tunisia
| | - Soumaya Rammeh
- Faculty of Medicine of Tunis, UR17ES15, University Tunis El Manar, Tunis, Tunisia
- Pathology Department, Charles Nicolle Hospital, Tunis, Tunisia
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Zhu K, Wu Y, He P, Fan Y, Zhong X, Zheng H, Luo T. PI3K/AKT/mTOR-Targeted Therapy for Breast Cancer. Cells 2022; 11:2508. [PMID: 36010585 PMCID: PMC9406657 DOI: 10.3390/cells11162508] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 12/25/2022] Open
Abstract
Phosphatidylinositol 3-kinase (PI3K), protein kinase B (PKB/AKT) and mechanistic target of rapamycin (mTOR) (PAM) pathways play important roles in breast tumorigenesis and confer worse prognosis in breast cancer patients. The inhibitors targeting three key nodes of these pathways, PI3K, AKT and mTOR, are continuously developed. For breast cancer patients to truly benefit from PAM pathway inhibitors, it is necessary to clarify the frequency and mechanism of abnormal alterations in the PAM pathway in different breast cancer subtypes, and further explore reliable biomarkers to identify the appropriate population for precision therapy. Some PI3K and mTOR inhibitors have been approved by regulatory authorities for the treatment of specific breast cancer patient populations, and many new-generation PI3K/mTOR inhibitors and AKT isoform inhibitors have also been shown to have good prospects for cancer therapy. This review summarizes the changes in the PAM signaling pathway in different subtypes of breast cancer, and the latest research progress about the biomarkers and clinical application of PAM-targeted inhibitors.
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Affiliation(s)
- Kunrui Zhu
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Yanqi Wu
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Ping He
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Yu Fan
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Xiaorong Zhong
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Hong Zheng
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
| | - Ting Luo
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu 610000, China
- Multi-Omics Laboratory of Breast Diseases, State Key Laboratory of Biotherapy, National Collaborative, Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610000, China
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Sibilano M, Tullio V, Adorno G, Savini I, Gasperi V, Catani MV. Platelet-Derived miR-126-3p Directly Targets AKT2 and Exerts Anti-Tumor Effects in Breast Cancer Cells: Further Insights in Platelet-Cancer Interplay. Int J Mol Sci 2022; 23:ijms23105484. [PMID: 35628294 PMCID: PMC9141257 DOI: 10.3390/ijms23105484] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 02/07/2023] Open
Abstract
Among the surrounding cells influencing tumor biology, platelets are recognized as novel players as they release microvesicles (MVs) that, once delivered to cancer cells, modulate signaling pathways related to cell growth and dissemination. We have previously shown that physiological delivery of platelet MVs enriched in miR-126 exerted anti-tumor effects in different breast cancer (BC) cell lines. Here, we seek further insight by identifying AKT2 kinase as a novel miR-126-3p direct target, as assessed by bioinformatic analysis and validated by luciferase assay. Both ectopic expression and platelet MV-mediated delivery of miR-126-3p downregulated AKT2 expression, thus suppressing proliferating and invading properties, in either triple negative (BT549 cells) or less aggressive Luminal A (MCF-7 cells) BC subtypes. Accordingly, as shown by bioinformatic analysis, both high miR-126 and low AKT2 levels were associated with favorable long-term prognosis in BC patients. Our results, together with the literature data, indicate that miR-126-3p exerts suppressor activity by specifically targeting components of the PIK3/AKT signaling cascade. Therefore, management of platelet-derived MV production and selective delivery of miR-126-3p to tumor cells may represent a useful tool in multimodal therapeutic approaches in BC patients.
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Affiliation(s)
- Matteo Sibilano
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (M.S.); (V.T.); (I.S.)
| | - Valentina Tullio
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (M.S.); (V.T.); (I.S.)
| | - Gaspare Adorno
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy;
| | - Isabella Savini
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (M.S.); (V.T.); (I.S.)
| | - Valeria Gasperi
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (M.S.); (V.T.); (I.S.)
- Correspondence: (V.G.); (M.V.C.); Tel.: +39-06-7259-6465 (V.G.); +39-06-7259-6465 (M.V.C.)
| | - Maria Valeria Catani
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy; (M.S.); (V.T.); (I.S.)
- Correspondence: (V.G.); (M.V.C.); Tel.: +39-06-7259-6465 (V.G.); +39-06-7259-6465 (M.V.C.)
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Khazaei-Poul Y, Shojaei S, Koochaki A, Ghanbarian H, Mohammadi-Yeganeh S. Evaluating the influence of Human Umbilical Cord Mesenchymal Stem Cells-derived exosomes loaded with miR-3182 on metastatic performance of Triple Negative Breast Cancer cells. Life Sci 2021; 286:120015. [PMID: 34614416 DOI: 10.1016/j.lfs.2021.120015] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/18/2022]
Abstract
AIMS Deregulation of microRNA (miRNA) function has been linked to numerous human cancers, such as Triple Negative Breast Cancer (TNBC). Exosomes, a subgroup of extracellular vehicles (EVs), can efficiently deliver many different cargo types to the target cell and have an extensive role in delivering therapeutic cargo for treatment. The present study intended to interrogate the effects of exosomal delivery of miR-3182 on TNBC cellular processes. MAIN METHODS Human Umbilical Cord Mesenchymal Stem Cells (HUCMSCs) were cultured and exosomes were isolated and characterized using TEM, SEM, DLS, and Western blot. Exosomes were transfected with miR-3182 and added to the treatment groups. The expression level of miR-3182 and their target genes including mTOR and S6KB1 were evaluated using RT-qPCR. The effects of miR-3182 loaded HUCMSC-exosomes treatment on the cellular aspect of MDA-MB-231 cells including their viability, migration potency, cell cycle status and apoptosis were investigated. KEY FINDINGS According to the results, exosomal miR-3182 significantly abolished cell proliferation and migration (P < 0.05). miR-3182 loaded exosomes also induced apoptosis in TNBC cells by down-regulating mTOR and S6KB1 genes (P < 0.05). SIGNIFICANCE In nutshell, miR-3182-loaded HUCMSC-exosomes can suppress TNBC invasion, suggesting that exosomes containing miR-3182 could be a reliable therapeutic paradigm in TNBC therapy.
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Affiliation(s)
- Yalda Khazaei-Poul
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Samaneh Shojaei
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Ameneh Koochaki
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Hossein Ghanbarian
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Samira Mohammadi-Yeganeh
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Tsimberidou AM, Shaw JV, Juric D, Verschraegen C, Weise AM, Sarantopoulos J, Lopes G, Nemunaitis J, Mita M, Park H, Ellers-Lenz B, Tian H, Xiong W, Kaleta R, Kurzrock R. Phase 1 study of M2698, a p70S6K/AKT dual inhibitor, in patients with advanced cancer. J Hematol Oncol 2021; 14:127. [PMID: 34407844 PMCID: PMC8371902 DOI: 10.1186/s13045-021-01132-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/30/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The PI3K/AKT/mTOR (PAM) pathway is a key regulator of tumor therapy resistance. We investigated M2698, an oral p70S6K/AKT dual inhibitor, in patients with advanced cancer who failed standard therapies. METHODS M2698 was administered as monotherapy (escalation, 15-380 mg daily; food effect cohort, 240-320 mg daily) and combined with trastuzumab or tamoxifen. RESULTS Overall, 101 patients were treated (M2698, n = 62; M2698/trastuzumab, n = 13; M2698/tamoxifen, n = 26). Patients were predominantly aged < 65 years, were female, had performance status 1 and were heavily pretreated. There was a dose- and concentration-dependent inhibition of pS6 levels in peripheral blood mononuclear cells and tumor tissue. M2698 was well tolerated; the most common treatment-emergent adverse events were gastrointestinal, abnormal dreams and fatigue (serious, attributed to M2698: monotherapy, 8.1%; M2698/trastuzumab, 7.7%; M2698/tamoxifen, 11.5% of patients). The recommended phase 2 doses of M2698 were 240 mg QD (monotherapy), 160 mg QD (M2698/trastuzumab) and 160 mg QD/240 mg intermittent regimen (M2698/tamoxifen). In the monotherapy cohort, 27.4% of patients had stable disease at 12 weeks; no objective response was noted. The median progression-free survival (PFS) durations in patients with PAM pathway alterations with and without confounding markers (KRAS, EGFR, AKT2) were 1.4 months and 2.8 months, respectively. Two patients with breast cancer (M2698/trastuzumab, n = 1; M2698/tamoxifen, n = 1) had partial response; their PFS durations were 31 months and 2.7 months, respectively. CONCLUSIONS M2698 was well tolerated. Combined with trastuzumab or tamoxifen, M2698 demonstrated antitumor activity in patients with advanced breast cancer resistant to multiple standard therapies, suggesting that it could overcome treatment resistance. Trial registration ClinicalTrials.gov, NCT01971515. Registered October 23, 2013.
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Affiliation(s)
- Apostolia-Maria Tsimberidou
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, Unit 455, 1515 Holcombe Boulevard, Houston, TX, 77030, USA.
| | - Jamie V Shaw
- EMD Serono Research and Development Institute, Inc., Billerica, MA, USA
| | - Dejan Juric
- Massachusetts General Hospital, Boston, MA, USA
| | | | | | - John Sarantopoulos
- Institute for Drug Development, Mays Cancer Center at University of Texas Health San Antonio MD Anderson Cancer Center, San Antonio, TX, USA
| | | | | | - Monica Mita
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Hui Tian
- EMD Serono Research and Development Institute, Inc., Billerica, MA, USA
| | - Wenyuan Xiong
- Merck Institute of Pharmacometrics, Merck Serono SA, Lausanne, Switzerland
| | - Remigiusz Kaleta
- EMD Serono Research and Development Institute, Inc., Billerica, MA, USA
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Effect of Wnt5a on drug resistance in estrogen receptor-positive breast cancer. Breast Cancer 2021; 28:1062-1071. [PMID: 34047951 PMCID: PMC8354951 DOI: 10.1007/s12282-021-01241-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 03/13/2021] [Indexed: 11/06/2022]
Abstract
Background Previously, we reported that Wnt5a-positive breast cancer can be classified as estrogen receptor (ER)-positive breast cancer; its prognosis is worse than that of Wnt5a-negative breast cancer. This study aimed to investigate the mechanisms underlying the poor prognosis in Wnt5a-positive breast cancer patients. Methods In total, 151 consecutive ER-positive breast cancer patients who underwent resection between January 2011 and February 2014 were enrolled. DNA microarray and pathway analyses were conducted using MCF-7 cells stably expressing Wnt5a [MCF-7/Wnt5a (+)]. Based on the outcomes, cell viability/drug sensitivity assays, and mutation analysis were performed using cell cultures and breast cancer tissues. The relationship between Wnt5a and the PI3K–AKT–mTOR signaling pathway was also examined. Results The relapse-free survival rate in patients with Wnt5a-positive breast cancer was significantly lower than that in patients with Wnt5a-negative breast cancer (P = 0.047). DNA microarray data suggest that only the cytochrome P450 (CYP) pathway was significantly upregulated in MCF-7/Wnt5a (+) cells (P = 0.0440). Additionally, MCF-7/Wnt5a (+) cells displayed reduced sensitivity to the metabolic substrates of CYP, tamoxifen (P < 0.001), paclitaxel (P < 0.001), and cyclophosphamide (P < 0.001). Of note, PIK3CA mutations were not associated with the expression of Wnt5a in breast cancer tissue and culture cells. Conclusions In ER-positive breast cancer, Wnt5a upregulates the CYP metabolic pathway and suppresses tamoxifen, paclitaxel, and cyclophosphamide resistance, all of the three, standard treatment methods for ER-positive breast cancer. Wnt5a is thus potentially involved in the poor prognosis of ER-positive breast cancer independently of the PI3K–AKT–mTOR signaling pathway. Supplementary Information The online version contains supplementary material available at 10.1007/s12282-021-01241-0.
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Kołodziej P, Nicoś M, Krawczyk PA, Bogucki J, Karczmarczyk A, Zalewski D, Kubrak T, Kołodziej E, Makuch-Kocka A, Madej-Czerwonka B, Płachno BJ, Kocki J, Bogucka-Kocka A. The Correlation of Mutations and Expressions of Genes within the PI3K/Akt/mTOR Pathway in Breast Cancer-A Preliminary Study. Int J Mol Sci 2021; 22:2061. [PMID: 33669698 PMCID: PMC7922286 DOI: 10.3390/ijms22042061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/08/2021] [Accepted: 02/16/2021] [Indexed: 12/12/2022] Open
Abstract
There is an urgent need to seek new molecular biomarkers helpful in diagnosing and treating breast cancer. In this elaboration, we performed a molecular analysis of mutations and expression of genes within the PI3K/Akt/mTOR pathway in patients with ductal breast cancer of various malignancy levels. We recognized significant correlations between the expression levels of the studied genes. We also performed a bioinformatics analysis of the data available on the international database TCGA and compared them with our own research. Studies on mutations and expression of genes were conducted using High-Resolution Melt PCR (HRM-PCR), Allele-Specific-quantitative PCR (ASP-qPCR), Real-Time PCR molecular methods in a group of women with ductal breast cancer. Bioinformatics analysis was carried out using web source Ualcan and bc-GenExMiner. In the studied group of women, it was observed that the prevalence of mutations in the studied PIK3CA and AKT1 genes was 29.63%. It was stated that the average expression level of the PIK3CA, PIK3R1, PTEN genes in the group of breast cancer patients is lower in comparison to the control group, while the average expression level of the AKT1 and mTOR genes in the studied group was higher in comparison to the control group. It was also indicated that in the group of patients with mutations in the area of the PIK3CA and AKT1 genes, the PIK3CA gene expression level is statistically significantly lower than in the group without mutations. According to our knowledge, we demonstrate, for the first time, that there is a very strong positive correlation between the levels of AKT1 and mTOR gene expression in the case of patients with mutations and without mutations.
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Affiliation(s)
- Przemysław Kołodziej
- Chair and Department of Biology and Genetics, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Marcin Nicoś
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, 20-954 Lublin, Poland; (M.N.); (P.A.K.)
| | - Paweł A. Krawczyk
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, 20-954 Lublin, Poland; (M.N.); (P.A.K.)
| | - Jacek Bogucki
- Department of Organic Chemistry, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Agnieszka Karczmarczyk
- Department of Experimental Haematooncology, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Daniel Zalewski
- Chair and Department of Biology and Genetics, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Tomasz Kubrak
- Department of Biochemistry and General Chemistry, Faculty of Medicine, University of Rzeszow, 35-310 Rzeszów, Poland;
| | - Elżbieta Kołodziej
- Department of Clinical Genetics, Medical University of Lublin, 20-080 Lublin, Poland; (E.K.); (J.K.)
| | - Anna Makuch-Kocka
- Department of Pharmacology, Medical University of Lublin, 20-059 Lublin, Poland;
| | - Barbara Madej-Czerwonka
- Department of Breast Surgery, District Specialist Hospital of Stefan Cardinal Wyszynski in Lublin, 20-718 Lublin, Poland;
- Department of Human Anatomy, Medical University of Lublin, 20-090 Lublin, Poland
| | - Bartosz J. Płachno
- Department of Plant Cytology and Embryology, Institute of Botany, Faculty of Biology, Jagiellonian University in Kraków, 30-387 Kraków, Poland;
| | - Janusz Kocki
- Department of Clinical Genetics, Medical University of Lublin, 20-080 Lublin, Poland; (E.K.); (J.K.)
| | - Anna Bogucka-Kocka
- Chair and Department of Biology and Genetics, Medical University of Lublin, 20-093 Lublin, Poland;
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Li YX, Ding SS, Wen WJ, Han L, Wang HQ, Shi HY. Impact of the Activation Status of the Akt/mTOR Signalling Pathway on the Clinical Behaviour of Synovial Sarcoma: Retrospective Analysis of 174 Patients at a Single Institution. Cancer Manag Res 2020; 12:1759-1769. [PMID: 32210617 PMCID: PMC7074818 DOI: 10.2147/cmar.s228578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 02/08/2020] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Phosphoinositide 3-kinase (PI3K) and the downstream Akt/mammalian target of rapamycin (mTOR) pathway are central to the control of cell proliferation and survival. Although abnormal activation of this pathway has been well established in a variety of tumours, limited studies are available on synovial sarcoma. The aim of this study was to investigate the expression of several key proteins of those pathways in synovial sarcomas and to correlate the expression of these proteins with clinicopathologic features and prognosis. PATIENTS AND METHODS A total of 174 patients with synovial sarcomas were recruited for this study. The phosphorylation status of Akt, mTOR, and eukaryotic translation initiation factor 4E binding protein (4E-BP1) was measured by immunohistochemistry assays in formalin-fixed, paraffin-embedded samples. Correlations between the expression levels of these proteins and clinicopathologic features and prognosis were analysed. RESULTS The positive rates of phosphorylated (p)Akt, pmTOR, p4E-BP1, and CyclinD1 were 62.7%, 55.6%, 47.1%, and 52.6%, respectively. The positive results of pmTOR, pAkt, and downstream p4E-BP1 were correlated with each other. The positive pAkt, pmTOR, p4E-BP1, and CyclinD1 results were more highly expressed in head and neck and visceral tumours, and positive p4E-BP1 results were correlated with larger size and larger areas of necrosis. In multivariate analysis of clinicopathologic factors, head and neck and visceral location, large tumour size, larger areas of necrosis and frequent mitosis were confirmed as risk factors for shorter overall survival. Positive pAkt, pmTOR and p4E-BP1 results were correlated significantly with shorter overall survival, and CyclinD1 was not in the univariate analysis. The positive pmTOR, pAkt, p4E-BP1, and CyclinD1 results were significantly poor prognostic factors for overall survival, and only positive p4E-BP1 results were significantly associated with shorter event-free survival in multivariate analysis. CONCLUSION This study demonstrated the high expression of pAkt, pmTOR, and p4E-BP1 associated with aggressive clinical behaviour in synovial sarcomas and provided evidence for prognostic evaluation and targeted therapy.
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Affiliation(s)
- Ying-Xue Li
- Department of Pathology, Medical School of Chinese People's Liberation Army, Beijing100853, People’s Republic of China
- Department of Pathology, Liaocheng People’s Hospital, Liaocheng252000, Shandong, People’s Republic of China
| | - Shan-Shan Ding
- Department of Pathology, PLA Rocket Force Characteristic Medical Center, Beijing100032, People’s Republic of China
| | - Wen-Juan Wen
- Department of Pathology, Liaocheng People’s Hospital, Liaocheng252000, Shandong, People’s Republic of China
| | - Lin Han
- Department of Pathology, Liaocheng People’s Hospital, Liaocheng252000, Shandong, People’s Republic of China
| | - Hong-Qun Wang
- Department of Pathology, Medical School of Chinese People's Liberation Army, Beijing100853, People’s Republic of China
| | - Huai-Yin Shi
- Department of Pathology, Medical School of Chinese People's Liberation Army, Beijing100853, People’s Republic of China
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Bai J, Chen WB, Zhang XY, Kang XN, Jin LJ, Zhang H, Wang ZY. HIF-2α regulates CD44 to promote cancer stem cell activation in triple-negative breast cancer via PI3K/AKT/mTOR signaling. World J Stem Cells 2020; 12:87-99. [PMID: 32110277 PMCID: PMC7031759 DOI: 10.4252/wjsc.v12.i1.87] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 10/01/2019] [Accepted: 10/14/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Breast cancer is a common malignant tumor that seriously threatens women’s health. Breast cancer stem cell (CSC)-like cell population may be the main factor for breast cancer metastasis. Therefore, targeted therapy for CSCs has great potential significance. Hypoxia-inducible factor is a transcription factor widely expressed in tumors. Studies have shown that down-regulation of the hypoxia signaling pathway inhibits tumor stem cell self-renewal and increases the sensitivity of stem cells to radiotherapy and chemotherapy mediated by hypoxia-inducible factor-2α (HIF-2α). However, the specific mechanism remains unclear and further research is necessary.
AIM To investigate the effect of HIF-2α down-regulation on stem cell markers, microsphere formation, and apoptosis in breast cancer cell line MDA-MB-231 under hypoxia and its possible mechanism.
METHODS Immunohistochemistry was used to detect the expression of HIF-2α and CD44 in triple-negative breast cancer (TNBC) and non-TNBC tissues. Double-labeling immunofluorescence was applied to detect the co-expression of HIF-2α and CD44 in MDA-MB-231 cells and MCF-7 cells. HIF-2α was silenced by RNA interference, and the expression of CD44 and transfection efficiency were detected by real-time fluorescent quantitative PCR. Further, flow cytometry, TdT-mediated X-dUTP nick end labeling, and mammosphere formation assays were used to evaluate the effect of HIF-2α on CSCs and apoptosis. The possible mechanisms were analyzed by Western blot.
RESULTS The results of immunohistochemistry showed that HIF-2α was highly expressed in both TNBC and non-TNBC, while the expression of CD44 in different molecular types of breast cancer cells was different. In in vitro experiments, it was found that HIF-2α and CD44 were expressed almost in the same cell. Compared with hypoxia + negative-sequence control, HIF-2α small interfering ribonucleic acid transfection can lower the expression of HIF-2α and CD44 mRNA(P < 0.05), increase the percentage of apoptotic cells (P < 0.05), and resulted in a reduction of CD44+/CD24− population (P < 0.05) and mammosphere formation (P < 0.05) in hypoxic MDA-MB-231 cells. Western blot analysis revealed that phosphorylated protein-serine-threonine kinase (p-AKT) and phosphorylated mammalian target of rapamycin (p-mTOR) levels in MDA-MB-231 decreased significantly after HIF-2α silencing (P < 0.05).
CONCLUSION Down-regulation of HIF-2α expression can inhibit the stemness of human breast cancer MDA-MB-231 cells and promote apoptosis, and its mechanism may be related to the CD44/phosphoinosmde-3-kinase/AKT/mTOR signaling pathway.
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Affiliation(s)
- Jie Bai
- Thyroid and Breast Deptartment III, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
| | - Wei-Bin Chen
- Department of Radiology, North China University of Science and Technology Affiliated Hospital, Tangshan 063000, Hebei Province, China
| | - Xiao-Yu Zhang
- Thyroid and Breast Deptartment III, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
| | - Xiao-Ning Kang
- Department of Second Ultrasound, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
| | - Li-Jun Jin
- Thyroid and Breast Deptartment III, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
| | | | - Zun-Yi Wang
- Thyroid and Breast Deptartment III, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
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12
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Fu Y, Wang Z, Luo C, Wang Y, Wang Y, Zhong X, Zheng H. Downregulation of CXXC Finger Protein 4 Leads to a Tamoxifen-resistant Phenotype in Breast Cancer Cells Through Activation of the Wnt/β-catenin Pathway. Transl Oncol 2020; 13:423-440. [PMID: 31911277 PMCID: PMC6948370 DOI: 10.1016/j.tranon.2019.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 02/08/2023] Open
Abstract
Tamoxifen is a successful endocrine therapy drug for estrogen receptor-positive (ER+) breast cancer. However, resistance to tamoxifen compromises the efficacy of endocrine treatment. In the present study, we identified potential tamoxifen resistance-related gene markers and investigated their mechanistic details. First, we established two ER + breast cancer cell lines resistant to tamoxifen, named MCF-7/TMR and BT474/TMR. Gene expression profiling showed that CXXC finger protein 4 (CXXC4) expression is lower in MCF-7/TMR cells than in MCF-7 cells. Furthermore, CXXC4 mRNA and protein expression are lower in the resistant cell lines than in the corresponding parental cell lines. We also investigated the correlation between CXXC4 and endocrine resistance in ER + breast cancer cells. CXXC4 knockdown accelerates cell proliferation in vitro and in vivo and renders breast cancer cells insensitive to tamoxifen, whereas CXXC4 overexpression inhibits cancer cell growth and increases tamoxifen sensitivity of resistant cells. In addition, we demonstrated that CXXC4 inhibits Wnt/β-catenin signaling in cancer cells by modulating the phosphorylation of GSK-3β, influencing the integrity of the β-catenin degradation complex. Silencing the CXXC4 gene upregulates expression of cyclinD1 and c-myc (the downstream targets of Wnt signaling) and promotes cell cycle progression. Conversely, ectopic expression of CXXC4 downregulates the expression of these proteins and arrests the cell cycle in the G0/G1 phase. Finally, the small-molecule inhibitor XAV939 suppresses Wnt signaling and sensitizes resistant cells to tamoxifen. These results indicate that components of Wnt pathway that are early in response to tamoxifen could be involved as an intrinsic factor of the transition to endocrine resistance, and inhibition of Wnt signaling may be an effective therapeutic strategy to overcome tamoxifen resistance.
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Affiliation(s)
- Yijie Fu
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China; Departments of Head and Neck and Mammary Gland Oncology, and Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China; School of Medicine, Chengdu University, Chengdu 610106, China
| | - Zhu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Chuanxu Luo
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China; Departments of Head and Neck and Mammary Gland Oncology, and Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Yu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Yanping Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Xiaorong Zhong
- Departments of Head and Neck and Mammary Gland Oncology, and Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu 610041, PR China; Departments of Head and Neck and Mammary Gland Oncology, and Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, PR China.
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PIK3CA Gene Mutations in Solid Malignancies: Association with Clinicopathological Parameters and Prognosis. Cancers (Basel) 2019; 12:cancers12010093. [PMID: 31905960 PMCID: PMC7017171 DOI: 10.3390/cancers12010093] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 02/07/2023] Open
Abstract
Phosphoinositide kinases (PIKs) are a group of lipid kinases that are important upstream activators of various significant signaling pathways. Hyperactivation of the PI3K/AKT/mTOR pathways—either via mutations or genomic amplification—confers key oncogenic activity, essential for the development and progression of several solid tumors. Alterations in the PIK3CA gene are associated with poor prognosis of solid malignancies. Although the literature reports contradictory prognostic values of PIK3CA in aggressive cancers, most of the available data highlight the important role of PIK3CA mutation in mediating tumorigenesis via increased signaling of the PI3K/AKT/mTOR survival pathway. Several inhibitors of PI3K/AKT/mTOR pathways are investigated as potential therapeutic options in solid malignancies. This article reviews the role of PIK3CA mutations and inhibitors of PI3K/AKT/mTOR pathways in major cancer types and examines its association with clinicopathological parameters and prognosis.
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14
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Li J, Wang Z, Shao Z. Fulvestrant in the treatment of hormone receptor-positive/human epidermal growth factor receptor 2-negative advanced breast cancer: A review. Cancer Med 2019; 8:1943-1957. [PMID: 31004402 PMCID: PMC6536994 DOI: 10.1002/cam4.2095] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/30/2019] [Accepted: 02/26/2019] [Indexed: 12/13/2022] Open
Abstract
Nearly 75% of breast cancers are hormone receptor-positive (HR+) and human epidermal growth factor receptor type 2-negative (HER2-), making endocrine therapy the mainstay of treatment for HR+ and HER2- combination. Although endocrine therapy, such as therapy with fulvestrant, is widely used in the clinic, endocrine resistance (primary or secondary) is inevitable and poses a serious clinical concern. However, the therapeutic landscape of HR+/HER2- breast cancer is rapidly changing and evolving. In recent years, molecular insights into the genome of HR+/HER2- breast cancer have helped to identify promising targets, such as alterations in signaling pathways [phosphatidylinositide 3-kinase (PI3K/AKT/mammalian target of rapamycin (mTOR)], dysregulation of the cell cycle (CDK4/6), and identification of new ESR1 mutations. These insights have led to the development of newer targeted therapies, which aims at significantly improving survival in these patients. This review summarizes the role and rationale of fulvestrant when used as a monotherapy or in combination with targeted therapies in patients with HR+/HER2- advanced breast cancer. We also discuss other novel agents and potential future combination treatment options.
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Affiliation(s)
- Junjie Li
- Department of Surgery in Breast CancerFudan University Shanghai Cancer CenterShanghaiChina
| | - Zhonghua Wang
- Department of Surgery in Breast CancerFudan University Shanghai Cancer CenterShanghaiChina
| | - Zhimin Shao
- Department of Surgery in Breast CancerFudan University Shanghai Cancer CenterShanghaiChina
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15
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Wu H, Wang W, Du J, Li H, Wang H, Huang L, Xiang H, Xie J, Liu X, Li H, Lin W. The distinct clinicopathological and prognostic implications of PIK3CA mutations in breast cancer patients from Central China. Cancer Manag Res 2019; 11:1473-1492. [PMID: 30863158 PMCID: PMC6388997 DOI: 10.2147/cmar.s195351] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose The mutation status and prognostic value of PIK3CA in breast cancer were widely investigated, which showed significant difference among the patients from vast areas around the world. In this study, the frequency, distribution, bias, and burden of PIK3CA mutations and their relationships with clinicopathologic variables and prognostic significances were investigated in the breast cancer patients from Central China. Materials and methods Somatic mutations in exon 9 and exon 20 of PIK3CA gene were analyzed using Sanger sequencing combining with targeted next generation sequencing in 494 breast cancer patients from Central China. The correlations between PIK3CA mutations and clinicopathological characteristics and the prognostic values of multiple PIK3CA mutation statuses were evaluated. Results PIK3CA mutations were found in 38% of the patients and associated with estrogen receptor-positive, progesterone receptor-positive, low Ki67 labeling index, and luminal/human epidermal growth factor receptor 2-enriched subtypes. Meanwhile, the prognosis of the total patients and the patients in old diagnostic age, progesterone receptor-negative, low Ki67 labeling index, and luminal/human epidermal growth factor receptor 2-enriched subgroups was significantly related to PIK3CA mutations. Most interestingly, the distribution, bias, and burden of PIK3CA mutations were correlated with different clinical, pathological, and molecular features as well as distinct prognostic implications in multiple breast cancer subgroups. Conclusion The frequency, distribution, bias, and burden of PIK3CA mutations were associated with various clinical, pathological, and molecular characteristics in the breast cancer patients from Central China. These different mutation statuses can be used as potential indicators of prognosis in multiple breast cancer subgroups.
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Affiliation(s)
- Haibo Wu
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, People's Republic of China
| | - Wei Wang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
| | - Jun Du
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, People's Republic of China
| | - Hong Li
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
| | - Huogang Wang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
| | - Liangliang Huang
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, People's Republic of China
| | - Hang Xiang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
| | - Jing Xie
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, People's Republic of China
| | - Xiaoli Liu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
| | - Heng Li
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, Anhui, People's Republic of China
| | - Wenchu Lin
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China, .,Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China,
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16
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Li G, Guo X, Chen M, Tang L, Jiang H, Day JX, Xie Y, Peng L, Xu X, Li J, Wang S, Xiao Z, Dai L, Wang J. Prevalence and spectrum of AKT1, PIK3CA, PTEN and TP53 somatic mutations in Chinese breast cancer patients. PLoS One 2018; 13:e0203495. [PMID: 30212483 PMCID: PMC6136723 DOI: 10.1371/journal.pone.0203495] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/17/2018] [Indexed: 12/29/2022] Open
Abstract
Breast cancer, one of the most frequently occurring cancers worldwide, is the leading cause of cancer-related death among women. AKT1, PIK3CA, PTEN and TP53 mutations were common observed in breast cancer representing potential clinical biomarkers for cancer classification and treatment. A comprehensive knowledge of AKT1, PIK3CA, PTEN and TP53 mutations in breast cancer was still insufficient in Chinese population. In this study, the complete coding regions and exon-intron boundaries of AKT1, PIK3CA, PTEN and TP53 genes were sequenced in paired breast tumor and normal tissues from 313 Chinese breast cancer patients using microfluidic PCR-based target enrichment and next-generation sequencing technology. Total 120 somatic mutations were identified in 190 of the 313 patients (60.7%), with the mutation frequency of AKT1 as 3.2%, PIK3CA as 36.4%, PTEN as 4.8%, and TP53 as 33.9%. Among these mutations, 1 in PIK3CA (p.I69N), 3 in PTEN (p.K62X, c.635-12_636delTTAACCATGCAGAT and p.N340IfsTer4) and 5 in TP53 (p.Q136AfsTer5, p.K139_P142del, p.Y234dup, p.V274LfsTer31 and p.N310TfsTer35) were novel. Notably, PIK3CA somatic mutations were significantly associated with ER-positive or PR-positive tumors. TP53 somatic mutations were significantly associated with ER-negative, PR-negative, HER2-positive, BRCA1 mutation, Ki67 high expression and basal-like tumors. Our findings provided a comprehensive mutation profiling of AKT1, PIK3CA, PTEN and TP53 genes in Chinese breast cancer patients, which have potential implications in clinical management.
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Affiliation(s)
- Guoli Li
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Xinwu Guo
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Ming Chen
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Lili Tang
- Department of Breast Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hui Jiang
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Julia X. Day
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Yueliang Xie
- School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Limin Peng
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Xunxun Xu
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Jinliang Li
- Sanway Gene Technology Inc., Changsha, Hunan, China
| | - Shouman Wang
- Department of Breast Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhi Xiao
- Department of Breast Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lizhong Dai
- Sanway Gene Technology Inc., Changsha, Hunan, China
- Research Center for Technologies in Nucleic Acid-Based Diagnostics, Changsha, Hunan, China
- Research Center for Technologies in Nucleic Acid-Based Diagnostics and Therapeutics, Changsha, Hunan, China
| | - Jun Wang
- School of Life Sciences, Central South University, Changsha, Hunan, China
- Sanway Gene Technology Inc., Changsha, Hunan, China
- * E-mail:
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17
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Li H, Xu Y, Zhao F, Song G, Rugo HS, Zhang Y, Yang L, Liu X, Shao B, Yang L, Liu Y, Ran R, Zhang R, Guan Y, Chang L, Yi X. Plasma PIK3CA ctDNA specific mutation detected by next generation sequencing is associated with clinical outcome in advanced breast cancer. Am J Cancer Res 2018; 8:1873-1886. [PMID: 30323979 PMCID: PMC6176180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 08/10/2018] [Indexed: 06/08/2023] Open
Abstract
Through next generation sequencing, this study evaluated the circulating tumor DNA (ctDNA) of advanced breast cancer patients to prospectively explore the relationship between specific DNA mutations and prognosis as well as therapeutic decision making. The target region covered 1021 gene totally. Clinical characteristics, treatment and outcome data were collected. We analyzed progression-free survival (PFS) from first-line therapy and overall survival (OS), and found that their endpoints were correlated with observed gene mutations. We enrolled 54 patients, with a median follow-up time of 8 years. Mutations were found in TP53, PIK3CA, and ERBB family, at 40.7%, 35.2%, and 25.9%, respectively. PIK3CA more frequently occurred in the site of 3140 A>G (p.H1047R) for 20.4% and HER2+ diseases, and it was associated with shorter median PFS and worse OS among HER2+ patients [mutant vs. wild type: 4 (range 2-9) vs. 8 (range 2-22) months, P=0.006], and [mutant vs. wild type: 29 (range 12-74) vs. 64 (range 20-96) months, P=0.043], respectively. The patients with mutations in TP53 had shorter OS (median 64 vs. 121 months, P=0.006). Multivariate analysis for HER2+ disease demonstrated that the PIK3CA p.H1047R mutation was the only factor associated with shorter PFS (P=0.025); while the receiver operating characteristic (ROC) analysis produces an area under the curve (AUC) of 0.789. The ctDNA analysis, found PIK3CA p.H1047R mutation was more frequent in HER2+ disease and associated with worse OS. It was also the only mutation associated with shorter PFS through a multivariate analysis of HER2+ patients who were treated with trastuzumab, suggesting trastuzumab had lower activity in these patients. The presence of a TP53 mutation was associated with worse OS.
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Affiliation(s)
- Huiping Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Yaping Xu
- Geneplus-BeijingBeijing 102206, China
| | - Fangyuan Zhao
- University of Chicago, Division of The Social Sciences1130E, 59th Street, Chicago 60637, IL, USA
| | - Guohong Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Hope S Rugo
- Department of Medicine, University of California at San Francisco, Helen Diller Family Comprehensive Cancer CenterSan Francisco, USA
| | - Yan Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Branch of Medical Statistics, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Ling Yang
- Geneplus-BeijingBeijing 102206, China
| | - Xiaoran Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Bin Shao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | | | - Yaxin Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Ran Ran
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | - Ruyan Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Breast Oncology, Peking University Cancer Hospital and Institute52 Fucheng Rd, Beijing 100142, China
| | | | | | - Xin Yi
- Geneplus-BeijingBeijing 102206, China
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18
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Razaviyan J, Hadavi R, Tavakoli R, Kamani F, Paknejad M, Mohammadi-Yeganeh S. Expression of miRNAs Targeting mTOR and S6K1 Genes of mTOR Signaling Pathway Including miR-96, miR-557, and miR-3182 in Triple-Negative Breast Cancer. Appl Biochem Biotechnol 2018; 186:1074-1089. [PMID: 29862445 DOI: 10.1007/s12010-018-2773-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/23/2018] [Indexed: 12/15/2022]
Abstract
Triple-negative breast cancer (TNBC) is a highly aggressive form of breast cancer. Aberrant expression of genes in mTOR pathway and their targeting miRNAs plays an important role in TNBC. The aim of this study was to determine the expression of mTOR and S6K1 and their targeting miRNAs in breast cancer cell lines and clinical samples. miRNAs targeting 3'-UTR of mTOR and S6K1 mRNAs were predicted using bioinformatic algorithms. MDA-MB-231, MCF-7, and MCF-10A as well as 20 TNBC samples were analyzed for gene and miRNA expression using quantitative real-time PCR (RT-qPCR). A receiver operating characteristic (ROC) curve analysis was performed for evaluation of candidate miRNAs as diagnostic biomarkers. miR-96 and miR-557 targeting mTOR and S6K1 mRNAs, respectively, were selected, and miR-3182 was selected as the miRNA targeting both genes. The miRNAs were down-regulated in cell lines, while their target mRNAs were up-regulated. Similar findings were observed in clinical samples. The ROC curve analysis revealed decline in expression of these miRNAs. We suggest that miR-96, miR-557, and miR-3182 can be used as inhibitory agents for mTOR and S6K1 in TNBC-targeted therapy.
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Affiliation(s)
- Javad Razaviyan
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Razie Hadavi
- Department of Biochemistry and Student Research Committee, Semnan University of Medical School, Semnan, Iran
- Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran, Iran
| | - Rezvan Tavakoli
- Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran, Iran
| | - Fereshteh Kamani
- Department of Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maliheh Paknejad
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Samira Mohammadi-Yeganeh
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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19
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Sirisena ND, Adeyemo A, Kuruppu AI, Samaranayake N, Dissanayake VHW. Genetic Variants Associated with Clinicopathological Profiles in Sporadic Breast Cancer in Sri Lankan Women. J Breast Cancer 2018; 21:165-172. [PMID: 29963112 PMCID: PMC6015979 DOI: 10.4048/jbc.2018.21.2.165] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 04/27/2018] [Indexed: 01/21/2023] Open
Abstract
PURPOSE Several single nucleotide polymorphisms (SNPs) have been reported to be associated with clinicopathological profiles in sporadic breast cancer based on studies conducted on major population groups. The knowledge of the effects of these common genetic variants in South Asian populations remains limited. The present study aimed to investigate the association between a selected set of SNPs and the clinicopathological profiles in sporadic breast cancer in Sri Lankan women. METHODS A total of 350 postmenopausal women with histologically confirmed invasive breast cancer were genotyped for 58 SNPs located in 36 breast cancer related genes. The clinicopathological factors that were investigated included age of onset, tumor histologic grade, and lymph node involvement, as well as estrogen receptor (ER), progesterone receptor, and human epidermal growth factor receptor 2 (HER2) status. Association testing was performed using logistic regression models adjusted for confounding factors. RESULTS Seven SNPs showed significant associations with clinicopathological profiles in breast cancer. The G allele of BRCA1:rs799917 (p=0.047; β [standard error; SE]=-1.069 [0.537]) and the G allele of NQO2:rs17136117 (p=0.040, β [SE]=1.901 [0.923]) were found to be associated with age of onset between 50 and 59 years. The C allele of CDH1:rs13689 (odds ratio [OR], 2.121; p=0.033) was found to be associated with ER-positive breast cancer. The A allele of AKT1:rs1130214 (OR, 2.095; p=0.011) and the C allele of NQO2:rs2071002 (OR, 1.632; p=0.045) were associated with HER2-positive breast cancer. The C allele of BRCA2:rs15869 (OR, 1.600; p=0.041) and the C allele of CCND1:rs7177 (OR, 1.555; p=0.041) were associated with high tumor histologic grade. CONCLUSION The common genetic variants identified in the AKT1, BRCA1, BRCA2, CCND1, CDH1, and NQO2 genes could serve as potential clinical and prognostic biomarkers in sporadic breast cancer patients. Further studies are required to validate our current findings in other populations.
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Affiliation(s)
| | - Adebowale Adeyemo
- Center for Research on Genomics and Global Health, National Human Genome Research Institute, Bethesda, USA
| | | | - Nilakshi Samaranayake
- Department of Parasitology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
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20
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Padthaisong S, Dokduang H, Yothaisong S, Techasen A, Namwat N, Yongvanit P, Khuntikeo N, Titapun A, Sangkhamanon S, Loilome W. Inhibitory effect of NVP-BKM120 on cholangiocarcinoma cell growth. Oncol Lett 2018; 16:1627-1633. [PMID: 30008846 PMCID: PMC6036373 DOI: 10.3892/ol.2018.8848] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 01/25/2018] [Indexed: 01/17/2023] Open
Abstract
Abnormal activation of the phosphatidylinositol 3-kinase (PI3K) pathway has been demonstrated in certain types of cancer, including cholangiocarcinoma (CCA). This pathway may therefore be a promising target for CCA treatment. The present study assessed the inhibitory effect of NVP-BKM120, a pan-class I PI3K inhibitor, on CCA cell growth. This inhibitory effect was determined using CCA cell lines and in CCA-inoculated mice. The result from sulforhodamine B (SRB) assay demonstrated that NVP-BKM120 treatment inhibited CCA cell growth in a dose-dependent manner, even at the lowest tested concentration. The in vivo study revealed that oral administration of NVP-BKM120 (10 or 30 mg/kg) to CCA-inoculated nude mice led to a reduction in tumor growth when compared with controls, which was indicated by an immunohistochemical assay for Ki67 expression. In addition, the result from TUNEL assay demonstrated that NVP-BKM120 induced cancer cell death without any signs of toxicity, which indicated by the body weight of mice (data not shown). Western blot analysis demonstrated that NVP-BKM120 inhibited CCA cell growth by suppressing RAC serine/threonine protein kinase/mechanistic target of rapamycin activation and inhibiting the phosphorylation of phosphatase and tensin homolog, which is the inactivation form of the negative regulator of this pathway. Therefore, the results of the present study indicated that NVP-BKM120 should be considered as a therapeutic agent against CCA that could be used to improve treatment.
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Affiliation(s)
- Sureerat Padthaisong
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Hasaya Dokduang
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen 40002, Thailand
| | - Supak Yothaisong
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anchalee Techasen
- Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Nisana Namwat
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen 40002, Thailand
| | - Puangrat Yongvanit
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen 40002, Thailand
| | - Narong Khuntikeo
- Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Attapol Titapun
- Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sakkarn Sangkhamanon
- Cholangiocarcinoma Research Institute (CARI), Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Watcharin Loilome
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
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21
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ADAMTS6 suppresses tumor progression via the ERK signaling pathway and serves as a prognostic marker in human breast cancer. Oncotarget 2018; 7:61273-61283. [PMID: 27542224 PMCID: PMC5308650 DOI: 10.18632/oncotarget.11341] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 07/27/2016] [Indexed: 02/05/2023] Open
Abstract
A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS) family is involved in tumor development. However, how ADAMTS6 influences cancer remains unknown. We investigated the biological function and clinical implications of ADAMTs6 in breast cancer (BC). Its functional significance in BC cell lines was confirmed by ADAMTs6 overexpression or downregulation both in vitro and in vivo studies. Enhanced ADAMTS6 expression suppressed cell migration, invasion, and tumorigenesis, whereas knockdown promoted these characteristics. The extracellular signal-regulated kinase (ERK) pathway was partially involved in ADAMTS6-mediated inhibition of BC development, and miR-221-3p was identified as a predicted target for ADAMTS6. Results from the luciferase assay confirmed that miR-221-3p directly inhibited ADAMTS6 expression by binding its 3′-untranslated region. In addition, immunohistochemistry data from specimens from 182 BC patients showed that high ADAMTS6 expression was significantly correlated with favorable disease-free survival (DFS, p = 0.045). Subgroup analysis of patients with ER positive, PR positive or HER-2 negative tumors revealed that high ADAMTS6 expression more strongly extended DFS compared to low expression (p = 0.004, p = 0.009, p = 0.017). Multivariate analyses confirmed that ADAMTS6 expression was an independent risk factor for DFS (p = 0.011). Together, these data demonstrate that ADAMTS6 inhibits tumor development by regulating the ERK pathway via binding of miR-221-3p. Thus, its expression may be a potential prognostic biomarker for BC.
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22
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Deng L, Zhu X, Sun Y, Wang J, Zhong X, Li J, Hu M, Zheng H. Prevalence and Prognostic Role of PIK3CA/AKT1 Mutations in Chinese Breast Cancer Patients. Cancer Res Treat 2018. [PMID: 29540052 PMCID: PMC6333988 DOI: 10.4143/crt.2017.598] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Purpose The prevalence of PIK3CA in Chinese breast cancer patients may be underestimated. Therefore, we investigated the distribution of somatic PIK3CA/AKT1 mutations in Chinese breast cancer patients and explored their roles in tumor phenotypes and disease prognosis. Materials and Methods Tumors from 507 breast cancer patients were prospectively collected from the West China Hospital between 2008 and 2013. Whole exons of AKT1 and PIK3CA were detected in fresh-frozen tumors using next-generation sequencing, and correlations between PIK3CA/AKT1 mutations and clinicopathological features were analyzed. Results The AKT1 mutation was found in 3.6% (18/507) of patients. Tumors from patients that carried the AKT1 mutation were estrogen receptor (ER)+/progesterone receptor (PR)+/human epidermal growth factor receptor 2 (HER2)‒ and were more likely to have high expression levels of Ki67. The prevalence of the PIK3CA mutation was 46.5% (236/507), and 35 patients carried two or three variants of the PIK3CA gene. PIK3CA mutations were associated with ER+/PR+/HER2‒ status. The prognosis of patients with one mutation in PIK3CA (or PIK3CA/AKT1) was not significantly different than that of patients with wild-type PIK3CA (or PIK3CA/AKT1), while patients with two or three variants in PIK3CA (or PIK3CA/AKT1) exhibited poorer outcomes in the entire group and in all three subgroups (ER+, HER2‒, Ki67 high), particularly with respect to overall survival. Conclusion A high frequency of somatic PIK3CA mutations was detected in Chinese breast cancer patients. In addition to the mutation frequency, the tumor mutational burden of the PIK3CA and AKT1 genes should also be of concern, as they may be associated with poor prognosis.
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Affiliation(s)
- Ling Deng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Laboratory of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Xuehua Zhu
- Dizal (Jiangsu) Pharmaceutical Co., Ltd., Shanghai, China
| | - Yun Sun
- Dizal (Jiangsu) Pharmaceutical Co., Ltd., Shanghai, China
| | - Jiemin Wang
- Dizal (Jiangsu) Pharmaceutical Co., Ltd., Shanghai, China
| | - Xiaorong Zhong
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Jiayuan Li
- Department of Epidemiology and Bio-Statistics, West China School of Public Health, Sichuan University, Chengdu, China
| | - Min Hu
- Dizal (Jiangsu) Pharmaceutical Co., Ltd., Shanghai, China
| | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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23
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Fujii T, Matsuda N, Kono M, Harano K, Chen H, Luthra R, Roy-Chowdhuri S, Sahin AA, Wathoo C, Joon AY, Tripathy D, Meric-Bernstam F, Ueno NT. Prior systemic treatment increased the incidence of somatic mutations in metastatic breast cancer. Eur J Cancer 2017; 89:64-71. [PMID: 29232568 DOI: 10.1016/j.ejca.2017.11.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/01/2017] [Accepted: 11/10/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Understanding the biology of breast cancer is important for guiding treatment strategies and revealing resistance mechanisms. Our objectives were to investigate the relationship between previous systemic therapy exposure and mutational spectrum in metastatic breast cancer and to identify clinicopathological factors associated with identified frequent somatic mutations. METHODS Archival tissues of patients with metastatic breast cancer were subjected to hotspot molecular testing by next-generation sequencing. The variables that significantly differed (P < 0.05) in univariate analysis were selected to fit multivariate models. Logistic models were fit to estimate the association between mutation status and clinical variables of interest. Five-fold cross-validation was performed to estimate the prediction error of each model. RESULTS A total of 922 patients were included in the analysis. In multivariate analysis, previous systemic treatment before molecular testing (N = 186) was associated with a significantly higher rate of TP53 and PIK3CA mutations compared with the lack of systemic treatment (P < 0.001 for both). CONCLUSION Systemic treatment exposure is an independent risk factor for high rates of TP53 and PIK3CA mutation, which suggests the importance of testing samples after systemic therapy to accurately assess mutations. It is worth testing the gene profile when tumours become resistant to systemic treatments.
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Affiliation(s)
- Takeo Fujii
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Naoko Matsuda
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Miho Kono
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Kenichi Harano
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Huiqin Chen
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rajyalakshmi Luthra
- Molecular Diagnostic Laboratory, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Sinchita Roy-Chowdhuri
- Department of Pathology, Division of Pathology/Lab Medicine, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Aysegul A Sahin
- Department of Pathology, Division of Pathology/Lab Medicine, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Chetna Wathoo
- Sheikh Khalifa Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Aron Y Joon
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Debu Tripathy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Funda Meric-Bernstam
- Sheikh Khalifa Zayed Al Nahyan Institute for Personalized Cancer Therapy, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA; Department of Investigational Cancer Therapeutics (Phase I Trials Department), The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Naoto T Ueno
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
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Deng L, Lei Q, Wang Y, Wang Z, Xie G, Zhong X, Wang Y, Chen N, Qiu Y, Pu T, Bu H, Zheng H. Downregulation of miR-221-3p and upregulation of its target gene PARP1 are prognostic biomarkers for triple negative breast cancer patients and associated with poor prognosis. Oncotarget 2017; 8:108712-108725. [PMID: 29312562 PMCID: PMC5752475 DOI: 10.18632/oncotarget.21561] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 09/13/2017] [Indexed: 02/05/2023] Open
Abstract
The purpose of this study was to identify microRNAs (miRNAs) closely associated with the prognosis of triple-negative breast cancer (TNBC) and their possible targets. This study recruited 125 early-stage TNBC patients, including 40 cases in the experimental group (20 cases with poor prognoses vs. 20 cases with good prognoses) and 85 cases in the validation group (27 cases with poor prognoses vs. 58 cases with good prognoses). In the experimental group, miRNA microarray showed 34 differentially expressed miRNAs in patients with different prognoses. We selected 5 miRNAs for validation. The differential expression of miR-221-3p was further verified in the experimental and validation groups using real-time polymerase chain reaction (PCR). High miR-221-3p expression was associated with better 5-year disease-free survival (DFS) (HR = 0.480; 95% CI, 0.263-0.879; p = 0.017) of TNBC patients. High expression of its target gene PARP1 predicted poorer 5-year DFS (HR = 2.236, 95% CI, 1.209-4.136, p = 0.010). MiR-221-3p down-regulated PARP1 by targeting its 3'-untranslated region. In conclusion, low miR-221-3p expression may contribute to the poor outcome of TNBC patients through regulating PARP1. MiR-221-3p likely plays a role as a PARP1 inhibitor by directly regulating PARP1 expression, thereby affecting the prognoses of TNBC patients.
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Affiliation(s)
- Ling Deng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qianqian Lei
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Radiation Oncology, Chongqing Cancer Institute & Hospital & Cancer Center, Chongqing, China
| | - Yu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Guiqin Xie
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaorong Zhong
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yanping Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Nianyong Chen
- Cancer center, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Qiu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Tianjie Pu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Bu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Cancer center, West China Hospital, Sichuan University, Chengdu, China
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25
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Liu X, Shi Y, Deng Y, Dai R. Using Molecular Docking Analysis to Discovery Dregea sinensis Hemsl. Potential Mechanism of Anticancer, Antidepression, and Immunoregulation. Pharmacogn Mag 2017; 13:358-362. [PMID: 28839357 PMCID: PMC5551350 DOI: 10.4103/pm.pm_384_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 11/08/2016] [Indexed: 12/31/2022] Open
Abstract
Background: Dregea sinensis Hemsl. plant of the genus Dregea volubilis (Asclepiadaceae), plays a vital role in anticancer, antidepression, and immunoregulation. Steroidal glycosides are the main constituents of this herb, which were significant biological active ingredients. Objective: The objective of this study is to recognize the mechanism of anticancer, antidepression, and immunoregulation of D. sinensis Hemsl. Materials and Methods: Seventy-two steroidal glycosides of D. sinensis Hemsl. were evaluated on the docking behavior of tumor-associated proteins (PI3K, Akt, mTOR), depression-related proteins (MAO-A, MAO-B) and immune-related proteins (tumor necrosis factor-α [TNF-α], tumor necrosis factor receptor 2 [TNFR2], interleukin-2Rα [IL-2Rα]) using Discovery Studio version 3.1 (Accelrys, San Diego, USA). Results: The molecular docking analysis revealed that mostly steroidal glycosides of D. sinensis Hemsl. exhibited powerful interaction with the depression-related protein (MAO-A) and the immune-related proteins (TNFR2, IL-2Rα). Some ligands exhibited high binding energy for the tumor-associated proteins (PI3K, Akt, mTOR) and the immune-related protein (TNF-α), but MAO-B showed none interaction with the ligands. Conclusion: This study has paved better understanding of steroidal glycosides from D. sinensis Hemsl. as potential constituents to the prevention of associated cancer, depression and disorders of immunoregulation. SUMMARY The ligand database was consist of 72 steroidal glycosides from Dregea sinensis Hemsl Steroidal glycosides had the potential to dock with the tumor-associated proteins (PI3K, Akt, mTOR) Steroidal glycosides were bounded with MAO-A rather than MAO-B, accorded with the inhibitor selectivity of MAOs, can be considered as potent candidate inhibitors of MAO-A 72 ligands got high interaction with TNFR2 and IL-2Rα, regard the steroidal glycoside as powerful candidate inhibitors of TNFR2 and IL-2Rα.
Abbreviations used: PI3K: Phosphatidyl inositol 3-kinase; Akt: Protein kinase B; mTOR: Mammalian target of rapamycin; MAO-A: Monoamine oxidase A; MAO-B: Monoamine oxidase B; TNF-α: Tumor necrosis factor α; TNFR2: Tumor necrosis factor receptor 2; IL-2Rα: The alpha subunit (CD25) of the interleukin-2 receptor; DS: Discovery Studio; PDB: Protein Database Bank; 3D: three-dimensional.
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Affiliation(s)
- Xiujie Liu
- Institute of Space Biology and Medical Engineering, School of Life Science, Beijing Institute of Technology, Beijing, PR China
| | - Yu Shi
- Department of Basic Medicine, School of Basic Medical Sciences, Shanxi Medical University, Taiyuan, PR China
| | - Yulin Deng
- Institute of Space Biology and Medical Engineering, School of Life Science, Beijing Institute of Technology, Beijing, PR China
| | - Rongji Dai
- Institute of Space Biology and Medical Engineering, School of Life Science, Beijing Institute of Technology, Beijing, PR China
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Wang J, Zhu X, Xu X, Guo L, Shen G, Liu X, Chang C, Wang B, Yang H, Wang M. PIK3CA mutations and downstream effector p-mTOR expression: implication for prognostic factors and therapeutic targets in triple negative breast cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:7682-7691. [PMID: 31966614 PMCID: PMC6965305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/13/2017] [Indexed: 06/10/2023]
Abstract
Although PIK3CA mutations and phosphorylated mTOR (p-mTOR) expression are two main events on PI3K/Akt/mTOR pathway, limited data has reported their roles in triple negative breast cancer (TNBC). Thus, we evaluated the associations of these two biomarkers and clinicopathological characteristics and prognosis in large Chinese TNBC patients. Immunohistochemistry (IHC) analysis was used to assess p-mTOR expression level in 218 TNBC patients. Direct sequencing was applied to detect the most important hotspot regions in exons 9 and 20 of PIK3CA gene. In the TNBC cohort, mutations were identified in 11.5% cases which were associated with basal-like subtype. The somatic point mutations were independently associated with worse overall survival (HR=0.400, 95% CI: 0.193-0.830, P=0.014). As for p-mTOR expression, 47.7% of the tumors were positive and the staining was shown in cytoplasm, nuclear and perinuclear areas. There were significant differences observed in tumor size, lymph node status, and clinical stage between p-mTOR positive and p-mTOR negative cases. Notably, we found a significant association between p-mTOR expression and PIK3CA mutations. Patients with p-mTOR staining also demonstrated shorter overall survival (HR=0.710, 95% CI: 0.514-0.980, P=0.037). Therefore, PIK3CA mutations and its downstream effector p-mTOR expression were two important regulators for activating the PI3K/Akt/mTOR pathway. Both of them could be served as adverse prognostic biomarkers and may contribute to the targeted therapy for TNBC patients with poor outcome.
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Affiliation(s)
- Jie Wang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Xinxin Zhu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical SciencesBeijing, China
| | - Xin Xu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Lei Guo
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Guihua Shen
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Xiuyun Liu
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Chen Chang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Bingning Wang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Hongying Yang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
| | - Mingrong Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing, China
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Xie Y, Lv X, Luo C, Hu K, Gou Q, Xie K, Zheng H. Surgery of the primary tumor improves survival in women with stage IV breast cancer in Southwest China: A retrospective analysis. Medicine (Baltimore) 2017; 96:e7048. [PMID: 28562563 PMCID: PMC5459728 DOI: 10.1097/md.0000000000007048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 05/02/2017] [Accepted: 05/06/2017] [Indexed: 02/05/2023] Open
Abstract
The International Consensus Guidelines for advanced breast cancer (ABC) considers that the surgery of the primary tumor for stage IV breast cancer patients does not usually improve the survival. However, studies have showed that resection of the primary tumor may benefit these patients. The correlation between surgery and survival remains unclear.The impact of surgery and other clinical factors on overall survival (OS) of stage IV patients is investigated in West China Hospital. Female patients diagnosed with stage IV breast cancer between 1999 and 2014 were included (N = 223). Univariate and multivariate analysis assessed the association between surgery and OS.One hundred seventy-seven (79.4%) underwent surgery for the primary tumor, and 46 (20.6%) had no surgery. No significant differences were observed in age at diagnosis, T-stage, N-stage, histological grade, molecular subtype, hormone receptor (HR), and number of metastatic sites between 2 groups. Patients in the surgery group had dramatically longer OS (45.6 vs 21.3 months, log-rank P < .001). In univariate analysis, survival was associated with surgical treatment, residence, tumor size, lymph node, HR status, hormonal therapy, and radiotherapy. In multivariate analysis, surgery was an independent prognostic factor for OS [hazard ratio (HR), 0.569; 95% confidence interval (CI) 0.329-0.984, P = .044]. Additional independent prognostic factors were hormonal therapy (HR, 0.490; 95% CI 0.300-0.800) and radiotherapy (HR, 0.490; 95% CI 0.293-0.819). In addition, a favorable impact of surgery was observed by subgroup analysis.Our study showed that surgery of the primary breast tumor has a positive impact on OS in with stage IV breast cancer patients.
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Affiliation(s)
- Yuxin Xie
- Cancer Center
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy
| | - Xingxing Lv
- Cancer Center
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy
| | - Chuanxu Luo
- Cancer Center
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy
| | - Kejia Hu
- Cancer Center
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy
| | - Qiheng Gou
- State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu
| | - Keqi Xie
- Departments of Anesthesiology, Mianyang Central Hospital, Mianyang, Sichuan, China
| | - Hong Zheng
- Cancer Center
- Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy
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Xue JF, Shi ZM, Zou J, Li XL. Inhibition of PI3K/AKT/mTOR signaling pathway promotes autophagy of articular chondrocytes and attenuates inflammatory response in rats with osteoarthritis. Biomed Pharmacother 2017; 89:1252-1261. [DOI: 10.1016/j.biopha.2017.01.130] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 01/21/2017] [Accepted: 01/21/2017] [Indexed: 01/15/2023] Open
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Chou WC, Lin PH, Yeh YC, Shyr YM, Fang WL, Wang SE, Liu CY, Chang PMH, Chen MH, Hung YP, Li CP, Chao Y, Chen MH. Genes involved in angiogenesis and mTOR pathways are frequently mutated in Asian patients with pancreatic neuroendocrine tumors. Int J Biol Sci 2016; 12:1523-1532. [PMID: 27994516 PMCID: PMC5166493 DOI: 10.7150/ijbs.16233] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 09/25/2016] [Indexed: 01/05/2023] Open
Abstract
Introduction: To address the issue of limited data on and inconsistent findings for genetic alterations in pancreatic neuroendocrine tumors (pNETs), we analyzed sequences of known pNET-associated genes for their impact on clinical outcomes in a Taiwanese cohort. Methods: Tissue samples from 40 patients with sporadic pNETs were sequenced using a customized sequencing panel that analyzed 43 genes with either an established or potential association with pNETs. Genetic mutations and clinical outcomes were analyzed for potential associations. Results: Thirty-three patients (82.5%) survived for a median 5.9 years (range, 0.3-18.4) of follow up. The median number of mutations per patient was 3 (range, 0-16). The most frequent mutations were in ATRX (28%), MEN1 (28%), ASCL1 (28%), TP53 (20%), mTOR (20%), ARID1A (20%), and VHL (20%). The mutation frequencies in the MEN1 (including MEN1/PSIP1/ARID1A), mTOR (including mTOR/PIK3CA/AKT1/PTEN /TS1/TSC2/ATM), DAXX/ATRX, and angiogenesis (including VHL/ANGPT1/ANGPT2 /HIF1A) pathways were 48%, 48%, 38%, and 45%, respectively. Mutations in ATRX were associated with WHO grade I pNET (vs. grade II or III, p = 0.043), and so were those in genes involved in angiogenesis (p = 0.002). Patients with mutated MEN1 and DAXX/ATRX pathways showed a trend toward better survival, compared to patients with the wild-type genes (p = 0.08 and 0.12, respectively). Conclusion: Genetic profiles of Asian patients with pNETs were distinct from Caucasian patient profiles. Asian patients with pNETs were more frequently mutated for the mTOR and angiogenesis pathways. This could partially explain the better outcome observed for targeted therapy in Asian patients with pNETs.
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Affiliation(s)
- Wen-Chi Chou
- Department of Hematology-Oncology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Po-Han Lin
- Department of Medical Genetics, National Taiwan University Hospital, Taiwan
| | - Yi-Chen Yeh
- Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Ming Shyr
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wen-Liang Fang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shin-E Wang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Division of General Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chun-Yu Liu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Peter Mu-Hsin Chang
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Han Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Ping Hung
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chung-Pin Li
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yee Chao
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Huang Chen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan;; Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
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Manna PR, Molehin D, Ahmed AU. Dysregulation of Aromatase in Breast, Endometrial, and Ovarian Cancers: An Overview of Therapeutic Strategies. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2016; 144:487-537. [PMID: 27865465 DOI: 10.1016/bs.pmbts.2016.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Aromatase is the rate-limiting enzyme in the biosynthesis of estrogens, which play crucial roles on a spectrum of developmental and physiological processes. The biological actions of estrogens are classically mediated by binding to two estrogen receptors (ERs), ERα and ERβ. Encoded by the cytochrome P450, family 19, subfamily A, polypeptide 1 (CYP19A1) gene, aromatase is expressed in a wide variety of tissues, as well as benign and malignant tumors, and is regulated in a pathway- and tissue-specific manner. Overexpression of aromatase, leading to elevated systemic levels of estrogen, is unequivocally linked to the pathogenesis and growth of a number malignancies, including breast, endometrium, and ovarian cancers. Aromatase inhibitors (AIs) are routinely used to treat estrogen-dependent breast cancers in postmenopausal women; however, their roles in endometrial and ovarian cancers remain obscure. While AI therapy is effective in hormone sensitive cancers, they diminish estrogen production throughout the body and, thus, generate undesirable side effects. Despite the effectiveness of AI therapy, resistance to endocrine therapy remains a major concern and is the leading cause of cancer death. Considerable advances, toward mitigating these issues, have evolved in conjunction with a number of histone deacetylase (HDAC) inhibitors for countering an assortment of diseases and cancers, including the aforesaid malignancies. HDACs are a family of enzymes that are frequently dysregulated in human tumors. This chapter will discuss the current understanding of aberrant regulation and expression of aromatase in breast, endometrial, and ovarian cancers, and potential therapeutic strategies for prevention and treatment of these life-threatening diseases.
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Affiliation(s)
- P R Manna
- Texas Tech University Health Sciences Center School of Medicine, Lubbock, TX, United States.
| | - D Molehin
- Texas Tech University Health Sciences Center School of Medicine, Lubbock, TX, United States
| | - A U Ahmed
- Texas Tech University Health Sciences Center School of Medicine, Lubbock, TX, United States
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Liu ZG, Tang J, Chen Z, Zhang H, Wang H, Yang J, Zhang H. The novel mTORC1/2 dual inhibitor INK128 enhances radiosensitivity of breast cancer cell line MCF-7. Int J Oncol 2016; 49:1039-45. [DOI: 10.3892/ijo.2016.3604] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/11/2016] [Indexed: 11/06/2022] Open
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Ahmad F, Badwe A, Verma G, Bhatia S, Das BR. Molecular evaluation of PIK3CA gene mutation in breast cancer: determination of frequency, distribution pattern and its association with clinicopathological findings in Indian patients. Med Oncol 2016; 33:74. [PMID: 27282497 DOI: 10.1007/s12032-016-0788-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 06/01/2016] [Indexed: 02/06/2023]
Abstract
Somatic mutations in the PIK3CA gene are common in breast cancer and represent a clinically useful marker for prognosis and therapeutic target. Activating mutations in the PI3K p110 catalytic subunit (PIK3CA) have been identified in 18-40 % of breast carcinomas. In this study, we evaluated PIK3CA mutation in 185 Indian breast cancer patients by direct DNA sequencing. PIK3CA mutations were observed in 23.2 % (43/185) of breast tumor samples. PIK3CA mutations were more frequent exon 30 (76.8 %) than in exon 9 (23.2 %). Mutations were mostly clustered within two hotspot region between nucleotides 1624 and 1636 or between 3129 and 3140. Sequencing analysis revealed four different missense mutations at codon 542 and 545 (E542K, E545K, E545A and E545G) in the helical domain and two different amino acid substitutions at codon 1047 (H1047R and H1047L) in the kinase domain. None of the cases harbored concomitant mutations at multiple codons. PIK3CA mutations were more frequent in older patients, smaller size tumors, ductal carcinomas, grade II tumors, lymph node-positive tumors and non-DCIS tumors; however, none of the differences were significant. In addition, PIK3CA mutations were common in ER+, PR+ and HER2+ cases (30 %), and a comparatively low frequency were noted in triple-negative tumors (13.6 %). In conclusion, to our knowledge, this is the largest study to evaluate the PIK3CA mutation in Indian breast cancer patients. The frequency and distribution pattern of PIK3CA mutations is similar to global reports. Furthermore, identification of molecular markers has unique strengths and can provide insights into the pathogenic process of breast carcinomas.
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Affiliation(s)
- Firoz Ahmad
- Research and Development, SRL Limited, Plot No. 1, Prime Square Building, S.V. Road, Goregaon (W), Mumbai, 400062, India
| | - Anuya Badwe
- Research and Development, SRL Limited, Plot No. 1, Prime Square Building, S.V. Road, Goregaon (W), Mumbai, 400062, India
| | - Geeta Verma
- Histopathology Division, SRL Limited, Plot No. 1, Prime Square Building, S.V. Road, Goregaon (W), Mumbai, India
| | - Simi Bhatia
- Histopathology Division, SRL Limited, Plot No. 1, Prime Square Building, S.V. Road, Goregaon (W), Mumbai, India
| | - Bibhu Ranjan Das
- Research and Development, SRL Limited, Plot No. 1, Prime Square Building, S.V. Road, Goregaon (W), Mumbai, 400062, India.
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Li L, Zhang J, Xiong N, Li S, Chen Y, Yang H, Wu C, Zeng H, Liu Y. Notch-1 signaling activates NF-κB in human breast carcinoma MDA-MB-231 cells via PP2A-dependent AKT pathway. Med Oncol 2016; 33:33. [DOI: 10.1007/s12032-016-0747-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/22/2016] [Indexed: 10/22/2022]
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Dirican E, Akkiprik M, Özer A. Mutation distributions and clinical correlations of PIK3CA gene mutations in breast cancer. Tumour Biol 2016; 37:7033-45. [PMID: 26921096 DOI: 10.1007/s13277-016-4924-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/28/2016] [Indexed: 12/24/2022] Open
Abstract
Breast cancer (BCa) is the most common cancer and the second cause of death among women. Phosphoinositide 3-kinase (PI3K) signaling pathway has a crucial role in the cellular processes such as cell survival, growth, division, and motility. Moreover, oncogenic mutations in the PI3K pathway generally involve the activation phosphatidylinositol-4,5-bisphosphate 3-kinase-catalytic subunit alpha (PIK3CA) mutation which has been identified in numerous BCa subtypes. In this review, correlations between PIK3CA mutations and their clinicopathological parameters on BCa will be described. It is reported that PIK3CA mutations which have been localized mostly on exon 9 and 20 hot spots are detected 25-40 % in BCa. This relatively high frequency can offer an advantage for choosing the best treatment options for BCa. PIK3CA mutations may be used as biomarkers and have been major focus of drug development in cancer with the first clinical trials of PI3K pathway inhibitors currently in progress. Screening of PIK3CA gene mutations might be useful genetic tests for targeted therapeutics or diagnosis. Increasing data about PIK3CA mutations and its clinical correlations with BCa will help to introduce new clinical applications in the near future.
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Affiliation(s)
- Ebubekir Dirican
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, 34854, Maltepe, Istanbul, Turkey
| | - Mustafa Akkiprik
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, 34854, Maltepe, Istanbul, Turkey.
| | - Ayşe Özer
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, 34854, Maltepe, Istanbul, Turkey
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Simone V, Ciavarella S, Brunetti O, Savonarola A, Cives M, Tucci M, Opinto G, Maiorano E, Silvestris F. Everolimus restrains the paracrine pro-osteoclast activity of breast cancer cells. BMC Cancer 2015; 15:692. [PMID: 26468083 PMCID: PMC4606500 DOI: 10.1186/s12885-015-1717-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 10/08/2015] [Indexed: 11/27/2022] Open
Abstract
Background Breast cancer (BC) cells secrete soluble factors that accelerate osteoclast (OC) differentiation, leading to the formation of osteolytic bone metastases. In the BOLERO-2 trial, BC patients with bone involvement who received Everolimus had a delayed tumor progression in the skeleton as a result of direct OC suppression through the inhibition of mTOR, in addition to the general suppressor effect on the cancer cells. Here, we explored the effect of Everolimus, as mTOR inhibitor, on the pro-OC paracrine activity of BC cells. Methods Both MDA-MB-231 and MCF-7 BC cell lines were incubated with sub-lethal amounts of Everolimus, and their conditioned supernatants were assessed for their capacity to differentiate OCs from PBMC from healthy donors, as well as to interfere with their bone resorbing activity shown on calcium phosphate slices. We also measured the mRNA levels of major pro-OC factors in Everolimus-treated BC cells and their secreted levels by ELISA, and evaluated by immunoblotting the phosphorylation of transcription factors enrolled by pathways cooperating with the mTOR inhibition. Finally, the in vivo pro-OC activity of these cells was assessed in SCID mice after intra-tibial injections. Results We found that Everolimus significantly inhibited the differentiation of OCs and their in vitro bone-resorbing activity, and also found decreases of both mRNA and secreted pro-OC factors such as M-CSF, IL-6, and IL-1β, whose lower ELISA levels paralleled the defective phosphorylation of NFkB pathway effectors. Moreover, when intra-tibially injected in SCID mice, Everolimus-treated BC cells produced smaller bone metastases than the untreated cells. Conclusions mTOR inhibition in BC cells leads to a suppression of their paracrine pro-OC activity by interfering with the NFkB pathway; this effect may also account for the delayed progression of bone metastatic disease observed in the BOLERO-2 trial. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1717-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Valeria Simone
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Sabino Ciavarella
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Oronzo Brunetti
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Annalisa Savonarola
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Mauro Cives
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Marco Tucci
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
| | - Giuseppina Opinto
- Department of Pathological Anatomy, University of Bari "A. Moro", Bari, Italy.
| | - Eugenio Maiorano
- Department of Pathological Anatomy, University of Bari "A. Moro", Bari, Italy.
| | - Franco Silvestris
- Department of Biomedical Sciences and Human Oncology, University of Bari "A. Moro", P.zza Giulio Cesare, 11-70124, Bari, Italy.
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