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Li C, Zhang Y, Wang Y, Ouyang J, Yang Y, Zhu Q, Lu Y, Kang T, Li Y, Xia M, Chen J, Li Q, Zhu C, Ye L. RNA-binding protein LSM7 facilitates breast cancer metastasis through mediating alternative splicing of CD44. Life Sci 2024:123013. [PMID: 39182568 DOI: 10.1016/j.lfs.2024.123013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 08/11/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
AIMS The RNA-binding protein LSM7 is essential for RNA splicing, acting as a key component of the spliceosome complex; however, its specific role in breast cancer (BC) has not been extensively investigated. MATERIALS AND METHODS LSM7 expression in BC samples was evaluated through bioinformatics analysis and immunohistochemistry. The impact of LSM7 on promoting metastatic tumor characteristics was examined using transwell and wound healing assays, as well as an orthotopic xenograft model. Additionally, the involvement of LSM7 in alternative splicing of CD44 was explored via RNA immunoprecipitation and third-generation sequencing. The regulatory role of TCF3 in modulating LSM7 gene expression was further elucidated using luciferase reporter assays and chromatin immunoprecipitation. KEY FINDINGS Our findings demonstrate that LSM7 was significantly overexpressed in metastatic BC tissues and was associated with poor prognostic outcomes in patients with BC. LSM7 overexpression markedly increased the migratory and invasive capabilities of BC cells in vitro and significantly promoted spontaneous lung metastasis in vivo. Furthermore, RIP-seq analysis revealed that LSM7 binded to CD44 RNA, enhancing the expression of its alternatively spliced isoform CD44s, thereby driving BC metastasis and invasion. Additionally, the transcription factor TCF3 was found to activate LSM7 transcription by directly binding to its promoter. SIGNIFICANCE In summary, this study highlights the pivotal role of LSM7 in the production of the CD44s isoform and the promotion of breast cancer metastasis. Targeting the TCF3/LSM7/CD44s axis may offer a promising therapeutic strategy for breast cancer treatment.
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Affiliation(s)
- Chenxin Li
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yuhao Zhang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yun Wang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Jing Ouyang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yingqian Yang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Qingqing Zhu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yingsi Lu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Tingting Kang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yan Li
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Ming Xia
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Jingrun Chen
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China
| | - Qiji Li
- Department of Orthopaedic Surgery, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China.
| | - Chengming Zhu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China.
| | - Liping Ye
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518107, China.
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James C, Whitehead A, Plummer JT, Thompson R, Badal S. Failure to progress: breast and prostate cancer cell lines in developing targeted therapies. Cancer Metastasis Rev 2024:10.1007/s10555-024-10202-w. [PMID: 39060878 DOI: 10.1007/s10555-024-10202-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024]
Abstract
Developing anticancer drugs from preclinical to clinical takes approximately a decade in a cutting-edge biomedical lab and still 97% of most fail at clinical trials. Cell line usage is critical in expediting the advancement of anticancer therapies. Yet developing appropriate cell lines has been challenging and overcoming these obstacles whilst implementing a systematic approach of utilizing 3D models that recapitulate the tumour microenvironment is prudent. Using a robust and continuous supply of cell lines representing all ethnic groups from all locales is necessary to capture the evolving tumour landscape in culture. Next, the conversion of these models to systems on a chip that can by way of high throughput cytotoxic assays identify drug leads for clinical trials should fast-track drug development while markedly improving success rates. In this review, we describe the challenges that have hindered the progression of cell line models over seven decades and methods to overcome this. We outline the gaps in breast and prostate cancer cell line pathology and racial representation alongside their involvement in relevant drug development.
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Affiliation(s)
- Chelsi James
- Department of Basic Medical Sciences, Faculty of Medical Sciences Teaching and Research Complex, The University of the West Indies, Mona, West Indies, Jamaica
| | - Akeem Whitehead
- Department of Basic Medical Sciences, Faculty of Medical Sciences Teaching and Research Complex, The University of the West Indies, Mona, West Indies, Jamaica
| | | | - Rory Thompson
- Department of Pathology, The University of the West Indies, Mona, Jamaica
| | - Simone Badal
- Department of Basic Medical Sciences, Faculty of Medical Sciences Teaching and Research Complex, The University of the West Indies, Mona, West Indies, Jamaica.
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3
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Zhang X, Li P, Gan Y, Xiang S, Gu L, Zhou J, Zhou X, Wu P, Zhang B, Deng D. Driving effect of P16 methylation on telomerase reverse transcriptase-mediated immortalization and transformation of normal human fibroblasts. Chin Med J (Engl) 2024:00029330-990000000-00975. [PMID: 38420748 DOI: 10.1097/cm9.0000000000003004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND P16 inactivation is frequently accompanied by telomerase reverse transcriptase (TERT) amplification in human cancer genomes. P16 inactivation by DNA methylation often occurs automatically during immortalization of normal cells by TERT. However, direct evidence remains to be obtained to support the causal effect of epigenetic changes, such as P16 methylation, on cancer development. This study aimed to provide experimental evidence that P16 methylation directly drives cancer development. METHODS A zinc finger protein-based P16-specific DNA methyltransferase (P16-Dnmt) vector containing a "Tet-On" switch was used to induce extensive methylation of P16 CpG islands in normal human fibroblast CCD-18Co cells. Battery assays were used to evaluate cell immortalization and transformation throughout their lifespan. Cell subcloning and DNA barcoding were used to track the diversity of cell evolution. RESULTS Leaking P16-Dnmt expression (without doxycycline-induction) could specifically inactivate P16 expression by DNA methylation. P16 methylation only promoted proliferation and prolonged lifespan but did not induce immortalization of CCD-18Co cells. Notably, cell immortalization, loss of contact inhibition, and anchorage-independent growth were always prevalent in P16-Dnmt&TERT cells, indicating cell transformation. In contrast, almost all TERT cells died in the replicative crisis. Only a few TERT cells recovered from the crisis, in which spontaneous P16 inactivation by DNA methylation occurred. Furthermore, the subclone formation capacity of P16-Dnmt&TERT cells was two-fold that of TERT cells. DNA barcoding analysis showed that the diversity of the P16-Dnmt&TERT cell population was much greater than that of the TERT cell population. CONCLUSION P16 methylation drives TERT-mediated immortalization and transformation of normal human cells that may contribute to cancer development.
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Affiliation(s)
- Xuehong Zhang
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Paiyun Li
- Division of Etiology, Beijing Cancer Hospital, Beijing 100142, China
- Radiation Oncology Department, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Ying Gan
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Shengyan Xiang
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Liankun Gu
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Jing Zhou
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Xiaorui Zhou
- Department of Biomedical Engineering, Peking University Cancer Hospital and Institute, Beijing 100871, China
| | - Peihuang Wu
- Department of Biomedical Engineering, Peking University Cancer Hospital and Institute, Beijing 100871, China
| | - Baozhen Zhang
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
- Division of Etiology, Beijing Cancer Hospital, Beijing 100142, China
| | - Dajun Deng
- Key Laboratory of Carcinogenesis and Translational Research (MOE/Beijing), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, China
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Pommerenke C, Nagel S, Haake J, Koelz AL, Christgen M, Steenpass L, Eberth S. Molecular Characterization and Subtyping of Breast Cancer Cell Lines Provide Novel Insights into Cancer Relevant Genes. Cells 2024; 13:301. [PMID: 38391914 PMCID: PMC10886524 DOI: 10.3390/cells13040301] [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: 12/21/2023] [Revised: 01/26/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024] Open
Abstract
Continuous cell lines are important and commonly used in vitro models in breast cancer (BC) research. Selection of the appropriate model cell line is crucial and requires consideration of their molecular characteristics. To characterize BC cell line models in depth, we profiled a panel of 29 authenticated and publicly available BC cell lines by mRNA-sequencing, mutation analysis, and immunoblotting. Gene expression profiles separated BC cell lines in two major clusters that represent basal-like (mainly triple-negative BC) and luminal BC subtypes, respectively. HER2-positive cell lines were located within the luminal cluster. Mutation calling highlighted the frequent aberration of TP53 and BRCA2 in BC cell lines, which, therefore, share relevant characteristics with primary BC. Furthermore, we showed that the data can be used to find novel, potential oncogenic fusion transcripts, e.g., FGFR2::CRYBG1 and RTN4IP1::CRYBG1 in cell line MFM-223, and to elucidate the regulatory circuit of IRX genes and KLF15 as novel candidate tumor suppressor genes in BC. Our data indicated that KLF15 was activated by IRX1 and inhibited by IRX3. Moreover, KLF15 inhibited IRX1 in cell line HCC-1599. Each BC cell line carries unique molecular features. Therefore, the molecular characteristics of BC cell lines described here might serve as a valuable resource to improve the selection of appropriate models for BC research.
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Affiliation(s)
- Claudia Pommerenke
- Department of Bioinformatics, IT and Databases, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany;
| | - Stefan Nagel
- Department of Human and Animal Cell Lines, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (S.N.)
| | - Josephine Haake
- Department of Human and Animal Cell Lines, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (S.N.)
| | - Anne Leena Koelz
- Department of Human and Animal Cell Lines, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (S.N.)
| | - Matthias Christgen
- Institute of Pathology, Hannover Medical School, 30625 Hannover, Germany
| | - Laura Steenpass
- Department of Human and Animal Cell Lines, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (S.N.)
- Zoological Institute, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Sonja Eberth
- Department of Human and Animal Cell Lines, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, 38124 Braunschweig, Germany; (S.N.)
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5
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Wang H, Lim KP, Kong W, Gao H, Wong BJH, Phua SX, Guo T, Goh WWB. MultiPro: DDA-PASEF and diaPASEF acquired cell line proteomic datasets with deliberate batch effects. Sci Data 2023; 10:858. [PMID: 38042886 PMCID: PMC10693559 DOI: 10.1038/s41597-023-02779-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 11/23/2023] [Indexed: 12/04/2023] Open
Abstract
Mass spectrometry-based proteomics plays a critical role in current biological and clinical research. Technical issues like data integration, missing value imputation, batch effect correction and the exploration of inter-connections amongst these technical issues, can produce errors but are not well studied. Although proteomic technologies have improved significantly in recent years, this alone cannot resolve these issues. What is needed are better algorithms and data processing knowledge. But to obtain these, we need appropriate proteomics datasets for exploration, investigation, and benchmarking. To meet this need, we developed MultiPro (Multi-purpose Proteome Resource), a resource comprising four comprehensive large-scale proteomics datasets with deliberate batch effects using the latest parallel accumulation-serial fragmentation in both Data-Dependent Acquisition (DDA) and Data Independent Acquisition (DIA) modes. Each dataset contains a balanced two-class design based on well-characterized and widely studied cell lines (A549 vs K562 or HCC1806 vs HS578T) with 48 or 36 biological and technical replicates altogether, allowing for investigation of a multitude of technical issues. These datasets allow for investigation of inter-connections between class and batch factors, or to develop approaches to compare and integrate data from DDA and DIA platforms.
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Affiliation(s)
- He Wang
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Kai Peng Lim
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Weijia Kong
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Huanhuan Gao
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, 310030, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang Province, 310030, China
- Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310030, China
| | - Bertrand Jern Han Wong
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Ser Xian Phua
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Tiannan Guo
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, 310030, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, Zhejiang Province, 310030, China
- Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, Zhejiang, 310030, China
| | - Wilson Wen Bin Goh
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore.
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore.
- Center for Biomedical Informatics, Nanyang Technological University, Singapore, 636921, Singapore.
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6
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Santra S, Sharapov AD, Fatykhov RF, Potapova AP, Khalymbadzha IA, Valieva MI, Kopchuk DS, Zyryanov GV, Bunev AS, Melekhin VV, Gaviko VS, Zonov AA. Xanthone-1,2,4-triazine and Acridone-1,2,4-triazine Conjugates: Synthesis and Anticancer Activity. Pharmaceuticals (Basel) 2023; 16:ph16030403. [PMID: 36986502 PMCID: PMC10058176 DOI: 10.3390/ph16030403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/21/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023] Open
Abstract
A total of 21 novel xanthone and acridone derivatives were synthesized using the reactions of 1,2,4-triazine derivatives with 1-hydroxy-3-methoxy-10-methylacridone, 1,3-dimethoxy-, and 1,3-dihydroxanthone, followed by optional dihydrotiazine ring aromatization. The synthesized compounds were evaluated for their anticancer activity against colorectal cancer HCT116, glioblastoma A-172, breast cancer Hs578T, and human embryonic kidney HEK-293 tumor cell lines. Five compounds (7a, 7e, 9e, 14a, and 14b) displayed good in vitro antiproliferative activities against these cancer cell lines. Compounds 7a and 7e demonstrated low toxicity for normal human embryonic kidney (HEK-293) cells, which determines the possibility of further development of these compounds as anticancer agents. Annexin V assay demonstrated that compound 7e activates apoptotic mechanisms and inhibits proliferation in glioblastoma cells.
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Affiliation(s)
- Sougata Santra
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
- Correspondence:
| | - Ainur D. Sharapov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Ramil F. Fatykhov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Anastasya P. Potapova
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Igor A. Khalymbadzha
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Maria I. Valieva
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Dmitry S. Kopchuk
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
| | - Alexander S. Bunev
- Medicinal Chemistry Center, Togliatti State University, Belorusskaya 14, 445020 Togliatti, Russia
| | - Vsevolod V. Melekhin
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
- Department of Medical Biology and Genetics, Ural State Medical University, Repina 3, 620028 Ekaterinburg, Russia
| | - Vasiliy S. Gaviko
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
- M.N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Kovalevskoy Street 18, 620108 Ekaterinburg, Russia
| | - Andrey A. Zonov
- Department of Organic and Biomolecular Chemistry, Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia
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Azevedo-Barbosa H, Ferreira-Silva GÁ, do Vale BP, Hawkes JA, Ionta M, Carvalho DT. Synthesis and Structure-Activity Relationship Studies of Novel Aryl Sulfonamides and Their Activity against Human Breast Cancer Cell Lines. Chem Biodivers 2022; 19:e202200831. [PMID: 36305872 DOI: 10.1002/cbdv.202200831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/27/2022] [Indexed: 12/27/2022]
Abstract
A series of structural analogs of aryl sulfonamide hybrid compounds were synthesised and their cytotoxic activity was evaluated against three human breast cancer cell lines (MCF-7, MDA-MB-231 and Hs 578T). The compounds were designed through electronic, hydrophobic and steric modifications using the chemical structure of N-{4-[(2-hydroxy-3-methoxy-5-propylphenyl)sulfamoyl]phenyl}acetamide (referred to as compound 7) as a starting point to then assess a structure-activity relationship (SAR) study. From the data generated, we observed that compounds 9, 10 and 11 (which have modifications in the substituents of the aryl sulfonamide), efficiently reduced the cell viability of MCF-7 and MDA-MB-231 cell cultures. Based on initial data, we selected compounds 10 and 11 for further investigations into their antiproliferative and/or cytotoxic profile against MDA-MB-231 cells, and we noted that compound 10 was the most promising compound in the series. Compound 10 promoted morphological changes and altered the dynamics of cell cycle progression in MDA-MB-231 cells, inducing arrest in G1/S transition. Taken together, these results show that the dihydroeugenol-aryl-sulfonamide hybrid compound 10 (which has an electron withdrawing nitro group) displays promising antiproliferative activity against MDA-MB-231 cell lines.
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Affiliation(s)
- Helloana Azevedo-Barbosa
- LQFar - Laboratory of Pharmaceutical Chemistry Research, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, 700, Gabriel Monteiro da Silva, 37130-001, Alfenas, MG, Brazil
| | - Guilherme Álvaro Ferreira-Silva
- LABAInt - Laboratory of Integrative Animal Biology, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, Brazil
| | - Bianca Pereira do Vale
- LQFar - Laboratory of Pharmaceutical Chemistry Research, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, 700, Gabriel Monteiro da Silva, 37130-001, Alfenas, MG, Brazil
| | - Jamie Anthony Hawkes
- LQFar - Laboratory of Pharmaceutical Chemistry Research, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, 700, Gabriel Monteiro da Silva, 37130-001, Alfenas, MG, Brazil
| | - Marisa Ionta
- LABAInt - Laboratory of Integrative Animal Biology, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, Brazil
| | - Diogo Teixeira Carvalho
- LQFar - Laboratory of Pharmaceutical Chemistry Research, Faculty of Pharmaceutical Sciences, Federal University of Alfenas, 700, Gabriel Monteiro da Silva, 37130-001, Alfenas, MG, Brazil
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8
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Mikaelian I, Gadet R, Deygas M, Bertolino P, Hennino A, Gillet G, Rimokh R, Berremila SA, Péoc’h M, Gonzalo P. EGFR-dependent aerotaxis is a common trait of breast tumour cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2022; 41:324. [PMID: 36380366 PMCID: PMC9667613 DOI: 10.1186/s13046-022-02514-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND Aerotaxis, the chemotactism to oxygen, is well documented in prokaryotes. We previously reported for the first time that non-tumorigenic breast epithelial cells also display unequivocal directional migration towards oxygen. This process is independent of the hypoxia-inducible factor (HIF)/prolyl hydroxylase domain (PHD) pathway but controlled by the redox regulation of epidermal growth factor receptor (EGFR), with a reactive oxygen species (ROS) gradient overlapping the oxygen gradient at low oxygen concentration. Since hypoxia is an acknowledged hallmark of cancers, we addressed the putative contribution of aerotaxis to cancer metastasis by studying the directed migration of cancer cells from an hypoxic environment towards nearby oxygen sources, modelling the in vivo migration of cancer cells towards blood capillaries. METHODS We subjected to the aerotactic test described in our previous papers cells isolated from fresh breast tumours analysed by the Pathology Department of the Saint-Etienne University Hospital (France) over a year. The main selection criterion, aside from patient consent, was the size of the tumour, which had to be large enough to perform the aerotactic tests without compromising routine diagnostic tests. Finally, we compared the aerotactic properties of these primary cells with those of commonly available breast cancer cell lines. RESULTS We show that cells freshly isolated from sixteen human breast tumour biopsies, representative of various histological characteristics and grades, are endowed with strong aerotactic properties similar to normal mammary epithelial cell lines. Strikingly, aerotaxis of these primary cancerous cells is also strongly dependent on both EGFR activation and ROS. In addition, we demonstrate that aerotaxis can trigger directional invasion of tumour cells within the extracellular matrix contrary to normal mammary epithelial cells. This contrasts with results obtained with breast cancer cell lines, in which aerotactic properties were either retained or impaired, and in some cases, even lost during the establishment of these cell lines. CONCLUSIONS Altogether, our results support that aerotaxis may play an important role in breast tumour metastasis. In view of these findings, we discuss the prospects for combating metastatic spread. TRIAL REGISTRATION IRBN1462021/CHUSTE.
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Affiliation(s)
- Ivan Mikaelian
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Rudy Gadet
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Mathieu Deygas
- grid.4444.00000 0001 2112 9282Institut Curie, Paris Sciences et Lettres (PSL) Research University, Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 144, Paris, France ,grid.440907.e0000 0004 1784 3645Institut Pierre-Gilles de Gennes, PSL Research University, Paris, France
| | - Philippe Bertolino
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Anca Hennino
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Germain Gillet
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Ruth Rimokh
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France
| | - Sid-Ali Berremila
- grid.412954.f0000 0004 1765 1491Pathology department, UFR Medecine Saint-Etienne, CHU of Saint-Etienne, Saint-Etienne, France
| | - Michel Péoc’h
- grid.412954.f0000 0004 1765 1491Pathology department, UFR Medecine Saint-Etienne, CHU of Saint-Etienne, Saint-Etienne, France
| | - Philippe Gonzalo
- grid.418116.b0000 0001 0200 3174Centre de Recherche en Cancérologie de Lyon - Université Claude Bernard Lyon 1, UMR CNRS 5286, INSERM 1052, Centre Léon Bérard, 69373 Lyon, France ,grid.412954.f0000 0004 1765 1491Biochemistry and Pharmacology department, UFR Medecine Saint-Etienne, CHU of Saint-Etienne, Saint-Etienne, France
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9
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Selemenakis P, Sharma N, Uhrig ME, Katz J, Kwon Y, Sung P, Wiese C. RAD51AP1 and RAD54L Can Underpin Two Distinct RAD51-Dependent Routes of DNA Damage Repair via Homologous Recombination. Front Cell Dev Biol 2022; 10:866601. [PMID: 35652094 PMCID: PMC9149245 DOI: 10.3389/fcell.2022.866601] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/20/2022] [Indexed: 11/17/2022] Open
Abstract
Homologous recombination DNA repair (HR) is a complex DNA damage repair pathway and an attractive target of inhibition in anti-cancer therapy. To help guide the development of efficient HR inhibitors, it is critical to identify compensatory HR sub-pathways. In this study, we describe a novel synthetic interaction between RAD51AP1 and RAD54L, two structurally unrelated proteins that function downstream of the RAD51 recombinase in HR. We show that concomitant deletion of RAD51AP1 and RAD54L further sensitizes human cancer cell lines to treatment with olaparib, a Poly (adenosine 5′-diphosphate-ribose) polymerase inhibitor, to the DNA inter-strand crosslinking agent mitomycin C, and to hydroxyurea, which induces DNA replication stress. We also show that the RAD54L paralog RAD54B compensates for RAD54L deficiency, although, surprisingly, less extensively than RAD51AP1. These results, for the first time, delineate RAD51AP1- and RAD54L-dependent sub-pathways and will guide the development of inhibitors that target HR stimulators of strand invasion.
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Affiliation(s)
- Platon Selemenakis
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States.,Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, CO, United States
| | - Neelam Sharma
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States
| | - Mollie E Uhrig
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States
| | - Jeffrey Katz
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Youngho Kwon
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Patrick Sung
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Claudia Wiese
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, United States
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10
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Goubran M, Wang W, Indik S, Faschinger A, Wasilenko ST, Bintner J, Carpenter EJ, Zhang G, Nuin P, Macintyre G, Wong GKS, Mason AL. Isolation of a Human Betaretrovirus from Patients with Primary Biliary Cholangitis. Viruses 2022; 14:v14050886. [PMID: 35632628 PMCID: PMC9146342 DOI: 10.3390/v14050886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 12/16/2022] Open
Abstract
A human betaretrovirus (HBRV) has been linked with the autoimmune liver disease, primary biliary cholangitis (PBC), and various cancers, including breast cancer and lymphoma. HBRV is closely related to the mouse mammary tumor virus, and represents the only exogenous betaretrovirus characterized in humans to date. Evidence of infection in patients with PBC has been demonstrated through the identification of proviral integration sites in lymphoid tissue, the major reservoir of infection, as well as biliary epithelium, which is the site of the disease process. Accordingly, we tested the hypothesis that patients with PBC harbor a transmissible betaretrovirus by co-cultivation of PBC patients’ lymph node homogenates with the HS578T breast cancer line. Because of the low level of HBRV replication, betaretrovirus producing cells were subcloned to optimize viral isolation and production. Evidence of infection was provided by electron microscopy, RT-PCR, in situ hybridization, cloning of the HBRV proviral genome and demonstration of more than 3400 integration sites. Further evidence of viral transmissibility was demonstrated by infection of biliary epithelial cells. While HBRV did not show a preference for integration proximal to specific genomic features, analyses of common insertion sites revealed evidence of integration proximal to cancer associated genes. These studies demonstrate the isolation of HBRV with features similar to mouse mammary tumor virus and confirm that patients with PBC display evidence of a transmissible viral infection.
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Affiliation(s)
- Mariam Goubran
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Weiwei Wang
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Stanislav Indik
- Department of Virology, University of Veterinary Medicine, A-1210 Vienna, Austria; (S.I.); (A.F.)
| | - Alexander Faschinger
- Department of Virology, University of Veterinary Medicine, A-1210 Vienna, Austria; (S.I.); (A.F.)
| | - Shawn T. Wasilenko
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Jasper Bintner
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Eric J. Carpenter
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada;
| | - Guangzhi Zhang
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Paulo Nuin
- Department of Medical Genetics, University of Alberta, Edmonton, AB T6G 2E1, Canada;
| | - Georgina Macintyre
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
| | - Gane K.-S. Wong
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada;
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Andrew L. Mason
- Center of Excellence for Gastrointestinal Inflammation and Immunity Research, University of Alberta, Edmonton, AB T6G 2E1, Canada; (M.G.); (W.W.); (S.T.W.); (J.B.); (G.Z.); (G.M.); (G.K.-S.W.)
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Correspondence: ; Tel.: +1-(780)-492-8176
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11
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Aggelopoulos CA, Christodoulou AM, Tachliabouri M, Meropoulis S, Christopoulou ME, Karalis TT, Chatzopoulos A, Skandalis SS. Cold Atmospheric Plasma Attenuates Breast Cancer Cell Growth Through Regulation of Cell Microenvironment Effectors. Front Oncol 2022; 11:826865. [PMID: 35111687 PMCID: PMC8801750 DOI: 10.3389/fonc.2021.826865] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/22/2021] [Indexed: 12/31/2022] Open
Abstract
Breast cancer exists in multiple subtypes some of which still lack a targeted and effective therapy. Cold atmospheric plasma (CAP) has been proposed as an emerging anti-cancer treatment modality. In this study, we investigated the effects of direct and indirect CAP treatment driven by the advantageous nanosecond pulsed discharge on breast cancer cells of different malignant phenotypes and estrogen receptor (ER) status, a major factor in the prognosis and therapeutic management of breast cancer. The main CAP reactive species in liquid (i.e. H2O2, NO2−/NO3−) and gas phase were determined as a function of plasma operational parameters (i.e. treatment time, pulse voltage and frequency), while pre-treatment with the ROS scavenger NAC revealed the impact of ROS in the treatment. CAP treatment induced intense phenotypic changes and apoptosis in both ER+ and ER- cells, which is associated with the mitochondrial pathway as evidenced by the increased Bax/Bcl-2 ratio and cleavage of PARP-1. Interestingly, CAP significantly reduced CD44 protein expression (a major cancer stem cell marker and matrix receptor), while differentially affected the expression of proteases and inflammatory mediators. Collectively, the findings of the present study suggest that CAP suppresses breast cancer cell growth and regulates several effectors of the tumor microenvironment and thus it could represent an efficient therapeutic approach for distinct breast cancer subtypes.
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Affiliation(s)
- Christos A. Aggelopoulos
- Laboratory of Cold Plasma and Advanced Techniques for Improving Environmental Systems, Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), Patras, Greece
- *Correspondence: Christos A. Aggelopoulos, ; Spyros S. Skandalis,
| | - Anna-Maria Christodoulou
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
| | - Myrsini Tachliabouri
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
| | - Stauros Meropoulis
- Laboratory of Cold Plasma and Advanced Techniques for Improving Environmental Systems, Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICE-HT), Patras, Greece
| | - Maria-Elpida Christopoulou
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
| | - Theodoros T. Karalis
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
| | - Athanasios Chatzopoulos
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
| | - Spyros S. Skandalis
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Res. Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Patras, Greece
- *Correspondence: Christos A. Aggelopoulos, ; Spyros S. Skandalis,
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12
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Kim JH, Lee E, Yun J, Ryu HS, Kim HK, Ju YW, Kim K, Kim J, Moon H. Calsequestrin 2 overexpression in breast cancer increases tumorigenesis and metastasis by modulating the tumor microenvironment. Mol Oncol 2022; 16:466-484. [PMID: 34743414 PMCID: PMC8763655 DOI: 10.1002/1878-0261.13136] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 10/05/2021] [Accepted: 11/04/2021] [Indexed: 01/16/2023] Open
Abstract
The spatial tumor shape is determined by the complex interactions between tumor cells and their microenvironment. Here, we investigated the role of a newly identified breast cancer-related gene, calsequestrin 2 (CASQ2), in tumor-microenvironment interactions during tumor growth and metastasis. We analyzed gene expression and three-dimensional tumor shape data from the breast cancer dataset of The Cancer Genome Atlas (TCGA) and identified CASQ2 as a potential regulator of tumor-microenvironment interaction. In TCGA breast cancer cases containing information of three-dimensional tumor shapes, CASQ2 mRNA showed the highest correlation with the spatial tumor shapes. Furthermore, we investigated the expression pattern of CASQ2 in human breast cancer tissues. CASQ2 was not detected in breast cancer cell lines in vitro but was induced in the xenograft tumors and human breast cancer tissues. To evaluate the role of CASQ2, we established CASQ2-overexpressing breast cancer cell lines for in vitro and in vivo experiments. CASQ2 overexpression in breast cancer cells resulted in a more aggressive phenotype and altered epithelial-mesenchymal transition (EMT) markers in vitro. CASQ2 overexpression induced cancer-associated fibroblast characteristics along with increased hypoxia-inducible factor 1α (HIF1α) expression in stromal fibroblasts. CASQ2 overexpression accelerated tumorigenesis, induced collagen structure remodeling, and increased distant metastasis in vivo. CASQ2 conferred more metaplastic features to triple-negative breast cancer cells. Our data suggest that CASQ2 is a key regulator of breast cancer tumorigenesis and metastasis by modulating diverse aspects of tumor-microenvironment interactions.
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Affiliation(s)
- Ju Hee Kim
- Biomedical Research InstituteSeoul National University HospitalSouth Korea
| | - Eun‐Shin Lee
- Biomedical Research InstituteSeoul National University HospitalSouth Korea
- Department of PathologySeoul National University School of MedicineSouth Korea
| | - Jihui Yun
- Genomic Medicine InstituteMedical Research CenterSeoul National UniversityKorea
- Department of Biomedical SciencesSeoul National University College of MedicineKorea
| | - Han Suk Ryu
- Department of PathologySeoul National University HospitalSouth Korea
| | - Hong Kyu Kim
- Department of SurgerySeoul National University HospitalKorea
| | - Young Wook Ju
- Department of SurgerySeoul National University HospitalKorea
| | - Kwangsoo Kim
- Division of Clinical BioinformaticsSeoul National University HospitalKorea
| | - Jong‐Il Kim
- Genomic Medicine InstituteMedical Research CenterSeoul National UniversityKorea
- Department of Biomedical SciencesSeoul National University College of MedicineKorea
- Cancer Research InstituteSeoul National UniversityKorea
- Department of Biochemistry and Molecular BiologySeoul National University College of MedicineKorea
| | - Hyeong‐Gon Moon
- Department of SurgerySeoul National University HospitalKorea
- Cancer Research InstituteSeoul National UniversityKorea
- Department of SurgerySeoul National University College of MedicineSouth Korea
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13
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Sflomos G, Schipper K, Koorman T, Fitzpatrick A, Oesterreich S, Lee AV, Jonkers J, Brunton VG, Christgen M, Isacke C, Derksen PWB, Brisken C. Atlas of Lobular Breast Cancer Models: Challenges and Strategic Directions. Cancers (Basel) 2021; 13:5396. [PMID: 34771558 PMCID: PMC8582475 DOI: 10.3390/cancers13215396] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 12/14/2022] Open
Abstract
Invasive lobular carcinoma (ILC) accounts for up to 15% of all breast cancer (BC) cases and responds well to endocrine treatment when estrogen receptor α-positive (ER+) yet differs in many biological aspects from other ER+ BC subtypes. Up to 30% of patients with ILC will develop late-onset metastatic disease up to ten years after initial tumor diagnosis and may experience failure of systemic therapy. Unfortunately, preclinical models to study ILC progression and predict the efficacy of novel therapeutics are scarce. Here, we review the current advances in ILC modeling, including cell lines and organotypic models, genetically engineered mouse models, and patient-derived xenografts. We also underscore four critical challenges that can be addressed using ILC models: drug resistance, lobular tumor microenvironment, tumor dormancy, and metastasis. Finally, we highlight the advantages of shared experimental ILC resources and provide essential considerations from the perspective of the European Lobular Breast Cancer Consortium (ELBCC), which is devoted to better understanding and translating the molecular cues that underpin ILC to clinical diagnosis and intervention. This review will guide investigators who are considering the implementation of ILC models in their research programs.
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Affiliation(s)
- George Sflomos
- ISREC—Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Koen Schipper
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Thijs Koorman
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands; (T.K.); (P.W.B.D.)
| | - Amanda Fitzpatrick
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Steffi Oesterreich
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (S.O.); (A.V.L.)
- Magee Women’s Cancer Research Institute, Pittsburgh, PA 15213, USA
- Cancer Biology Program, Women’s Cancer Research Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Adrian V. Lee
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA; (S.O.); (A.V.L.)
- Magee Women’s Cancer Research Institute, Pittsburgh, PA 15213, USA
- Cancer Biology Program, Women’s Cancer Research Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Jos Jonkers
- Division of Molecular Pathology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands;
- Oncode Institute, 1066 CX Amsterdam, The Netherlands
| | - Valerie G. Brunton
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Cancer, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XU, UK;
| | - Matthias Christgen
- Institute of Pathology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany;
| | - Clare Isacke
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
| | - Patrick W. B. Derksen
- Department of Pathology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands; (T.K.); (P.W.B.D.)
| | - Cathrin Brisken
- ISREC—Swiss Institute for Experimental Cancer Research, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London SW3 6JB, UK; (K.S.); (A.F.); (C.I.)
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14
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Kumar U, Hu Y, Masrour N, Castellanos-Uribe M, Harrod A, May ST, Ali S, Speirs V, Coombes RC, Yagüe E. MicroRNA-495/TGF-β/FOXC1 axis regulates multidrug resistance in metaplastic breast cancer cells. Biochem Pharmacol 2021; 192:114692. [PMID: 34298004 DOI: 10.1016/j.bcp.2021.114692] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/18/2021] [Accepted: 07/15/2021] [Indexed: 12/12/2022]
Abstract
Triple-negative metaplastic breast carcinoma (MBC) poses a significant treatment challenge due to lack of targeted therapies and chemotherapy resistance. We isolated a novel MBC cell line, BAS, which showed a molecular and phenotypic profile different from the only other metaplastic cell model, HS578T cells. To gain insight behind chemotherapeutic resistance, we generated doxorubicin (HS-DOX, BAS-DOX) and paclitaxel (HS-TX, BAS-TX) resistant derivatives of both cell lines. Drug sensitivity assays indicated a truly multidrug resistant (MDR) phenotype. Both BAS-DOX and BAS-TX showed up-regulation of FOXC1 and its experimental down-regulation re-sensitized cells to doxorubicin and paclitaxel. Experimental modulation of FOXC1 expression in MCF-7 and MDA-MB-231 cells corroborated its role in MDR. Genome-wide expression analyses identified gene expression signatures characterized by up-regulation of TGFB2, which encodes cytokine TGF-β2, in both BAS-DOX and BAS-TX cells. Pharmacological inhibition of the TGF-β pathway with galunisertib led to down-regulation of FOXC1 and increase in drug sensitivity in both BAS-DOX and BAS-TX cells. MicroRNA (miR) expression analyses identified high endogenous miR-495-3p levels in BAS cells that were downregulated in both BAS MDR cells. Transient expression of miR-495-3p mimic in BAS-DOX and BAS-TX cells caused downregulation of TGFB2 and FOXC1 and re-sensitized cells to doxorubicin and paclitaxel, whereas miR-495-3p inhibition in BAS cells led to increase in resistance to both drugs and up-regulation of TGFB2 and FOXC1. Together, these data suggest interplay between miR-495-3p, TGF-β2 and FOXC1 regulating MDR in MBC and open the exploration of novel therapeutic strategies.
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Affiliation(s)
- Uttom Kumar
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Yunhui Hu
- The 3(rd) Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Huan Hu Xi Road, Ti Yuan Bei, He Xi District, Tianjin 300060, PR China; GeneNet Pharmaceuticals Co. Ltd., Ting Jiang Road, Bei Chen District, Tianjin, 300410, PR China
| | - Nahal Masrour
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Marcos Castellanos-Uribe
- Nottingham Arabidopsis Stock Centre, University of Nottingham, Sutton Bonington campus, Loughborough LE12 5RD, UK
| | - Alison Harrod
- Epigenetics and Genome Stability Team, The Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK
| | - Sean T May
- Nottingham Arabidopsis Stock Centre, University of Nottingham, Sutton Bonington campus, Loughborough LE12 5RD, UK
| | - Simak Ali
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Valerie Speirs
- Institute of Medical Sciences, School of Medicine Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB24 2XD, UK
| | - R Charles Coombes
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
| | - Ernesto Yagüe
- Division of Cancer, Imperial College Faculty of Medicine, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK.
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15
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Li Z, Zhuo W, Chen L, Zhang X, Chen C, Hu D, Chen Y, Yang J, Zhou Y, Mao M, Xu L, Ju S, Shen J, Wang Q, Dong M, Xie S, Zhou J, Wang L. Establishment and Characterization of a HER2-Positive Cell Line Derived From the Pleural Effusion of a Drug-Resistant Breast Cancer Patient. Front Cell Dev Biol 2021; 9:680968. [PMID: 34141711 PMCID: PMC8204809 DOI: 10.3389/fcell.2021.680968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/03/2021] [Indexed: 11/30/2022] Open
Abstract
Drug resistance is a daunting challenge in the treatment of breast cancer, making it an urgent problem to solve in studies. Cell lines are important tools in basic and preclinical studies; however, few breast cell lines from drug-resistant patients are available. Herein, we established a novel HER2-positive breast cancer cell line from the pleural effusion of a drug-resistant metastatic breast cancer patient. This cell line has potent proliferative capability and tumorigenicity in nude mice but weak invasive and colony-forming capability. The molecular subtype of the cell line and its sensitivity to chemotherapeutics and HER2-targeting agents are different from those of its origin, suggesting that the phenotype changes between the primary and metastatic forms of breast cancer.
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Affiliation(s)
- Zhaoqing Li
- Key Laboratory of Cancer Prevention and Intervention, The Second Affiliated Hospital, School of Medicine, Cancer Institute, China National Ministry of Education, Zhejiang University, Hangzhou, China.,Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Wenying Zhuo
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China.,The Affiliated Cixi Hospital, Wenzhou Medical University, Ningbo, China
| | - Lini Chen
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Xun Zhang
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Cong Chen
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Dengdi Hu
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China.,The Affiliated Cixi Hospital, Wenzhou Medical University, Ningbo, China
| | - Yongxia Chen
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Jingjing Yang
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Yulu Zhou
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Misha Mao
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Ling Xu
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Siwei Ju
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Jun Shen
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Qinchuan Wang
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Minjun Dong
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Shuduo Xie
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Jichun Zhou
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
| | - Linbo Wang
- Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China.,Key Laboratory of Biotherapy of Zhejiang Province, Biomedical Research Center, Hangzhou, China
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16
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Murali P, Johnson BP, Lu Z, Climer L, Scott DA, Foulquier F, Oprea-Ilies G, Lupashin V, Drake RR, Abbott KL. Novel role for the Golgi membrane protein TMEM165 in control of migration and invasion for breast carcinoma. Oncotarget 2020; 11:2747-2762. [PMID: 32733646 PMCID: PMC7367651 DOI: 10.18632/oncotarget.27668] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 06/20/2020] [Indexed: 12/21/2022] Open
Abstract
The TMEM165 gene encodes for a multiple pass membrane protein localized in the Golgi that has been linked to congenital disorders of glycosylation. The TMEM165 protein is a putative ion transporter that regulates H+/Ca++/Mn++ homeostasis and pH in the Golgi. Previously, we identified TMEM165 as a potential biomarker for breast carcinoma in a glycoproteomic study using late stage invasive ductal carcinoma tissues with patient- matched adjacent normal tissues. The TMEM165 protein was not detected in non-malignant matched breast tissues and was detected in invasive ductal breast carcinoma tissues by mass spectrometry. Our hypothesis is that the TMEM165 protein confers a growth advantage to breast cancer. In this preliminary study we have investigated the expression of TMEM165 in earlier stage invasive ductal carcinoma and ductal carcinoma in situ cases. We created a CRISPR/Cas9 knockout of TMEM165 in the human invasive breast cancer cell line MDAMB231. Our results indicate that removal of TMEM165 in these cells results in a significant reduction of cell migration, tumor growth, and tumor vascularization in vivo. Furthermore, we find that TMEM165 expression alters the glycosylation of breast cancer cells and these changes promote the invasion and growth of breast cancer by altering the expression levels of key glycoproteins involved in regulation of the epithelial to mesenchymal transition such as E-cadherin. These studies illustrate new potential functions for this Golgi membrane protein in the control of breast cancer growth and invasion.
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Affiliation(s)
- Pavitra Murali
- University of Oklahoma Health Sciences Center, Department of Biochemistry and Molecular Biology, Oklahoma City, OK, United States
| | - Blake P Johnson
- Ouchita Baptist University, Department of Biology, Arkadelphia, AR, United States
| | - Zhongpeng Lu
- University of Oklahoma Health Sciences Center, Department of Biochemistry and Molecular Biology, Oklahoma City, OK, United States
| | - Leslie Climer
- University of Arkansas for Medical Sciences, Department of Biophysics and Physiology, Little Rock, AR, United States
| | - Danielle A Scott
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Charleston, SC, United States
| | - Francois Foulquier
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche, Unité de Glycobiologie Structurale et Fonctionnelle, University of Lille, Lille, France
| | | | - Vladimir Lupashin
- University of Arkansas for Medical Sciences, Department of Biophysics and Physiology, Little Rock, AR, United States
| | - Richard R Drake
- Department of Cell and Molecular Pharmacology, Medical University of South Carolina, Charleston, SC, United States
| | - Karen L Abbott
- University of Oklahoma Health Sciences Center, Department of Biochemistry and Molecular Biology, Oklahoma City, OK, United States
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17
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Differential Expression of Nicotine Acetylcholine Receptors Associates with Human Breast Cancer and Mediates Antitumor Activity of αO-Conotoxin GeXIVA. Mar Drugs 2020; 18:md18010061. [PMID: 31963558 PMCID: PMC7024346 DOI: 10.3390/md18010061] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 12/14/2022] Open
Abstract
Nicotinic acetylcholine receptors (nAChRs) are membrane receptors and play a major role in tumorigenesis and cancer progression. Here, we have investigated the differential expression of nAChR subunits in human breast cancer cell lines and breast epithelial cell lines at mRNA and protein levels and the effects of the αO-conotoxin GeXIVA, antagonist of α9α10 nAChR, on human breast cancer cells. Reverse transcription polymerase chain reaction (PCR) demonstrated that all nAChR subunits, except α6, were expressed in the 20 tested cell lines. Real time quantitative PCR (QRT-PCR) suggested that the mRNA of α5, α7, α9 and β4 nAChR subunits were overexpressed in all the breast cancer cell lines compared with the normal epithelial cell line HS578BST. α9 nAChR was highly expressed in almost all the breast cancer cell lines in comparison to normal cells. The different expression is prominent (p < 0.001) as determined by flow cytometry and Western blotting, except for MDA-MB-453 and HCC1395 cell lines. αO-conotoxin GeXIVA that targeted α9α10 nAChR were able to significantly inhibit breast cancer cell proliferation in vitro and merits further investigation as potential agents for targeted therapy.
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18
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Kim N, Thomas MR, Bergholt MS, Pence IJ, Seong H, Charchar P, Todorova N, Nagelkerke A, Belessiotis-Richards A, Payne DJ, Gelmi A, Yarovsky I, Stevens MM. Surface enhanced Raman scattering artificial nose for high dimensionality fingerprinting. Nat Commun 2020; 11:207. [PMID: 31924755 PMCID: PMC6954179 DOI: 10.1038/s41467-019-13615-2] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 11/11/2019] [Indexed: 01/12/2023] Open
Abstract
Label-free surface-enhanced Raman spectroscopy (SERS) can interrogate systems by directly fingerprinting their components' unique physicochemical properties. In complex biological systems however, this can yield highly overlapping spectra that hinder sample identification. Here, we present an artificial-nose inspired SERS fingerprinting approach where spectral data is obtained as a function of sensor surface chemical functionality. Supported by molecular dynamics modeling, we show that mildly selective self-assembled monolayers can influence the strength and configuration in which analytes interact with plasmonic surfaces, diversifying the resulting SERS fingerprints. Since each sensor generates a modulated signature, the implicit value of increasing the dimensionality of datasets is shown using cell lysates for all possible combinations of up to 9 fingerprints. Reliable improvements in mean discriminatory accuracy towards 100% are achieved with each additional surface functionality. This arrayed label-free platform illustrates the wide-ranging potential of high-dimensionality artificial-nose based sensing systems for more reliable assessment of complex biological matrices.
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Affiliation(s)
- Nayoung Kim
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Michael R Thomas
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Mads S Bergholt
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Isaac J Pence
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Hyejeong Seong
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Patrick Charchar
- School of Engineering, RMIT University, Melbourne, Victoria, Australia
| | - Nevena Todorova
- School of Engineering, RMIT University, Melbourne, Victoria, Australia
| | - Anika Nagelkerke
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Alexis Belessiotis-Richards
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - David J Payne
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Amy Gelmi
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Irene Yarovsky
- School of Engineering, RMIT University, Melbourne, Victoria, Australia.
| | - Molly M Stevens
- Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK.
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19
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Uhr K, Prager-van der Smissen WJC, Heine AAJ, Ozturk B, van Jaarsveld MTM, Boersma AWM, Jager A, Wiemer EAC, Smid M, Foekens JA, Martens JWM. MicroRNAs as possible indicators of drug sensitivity in breast cancer cell lines. PLoS One 2019; 14:e0216400. [PMID: 31063487 PMCID: PMC6504094 DOI: 10.1371/journal.pone.0216400] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 04/20/2019] [Indexed: 12/20/2022] Open
Abstract
MicroRNAs (miRNAs) regulate gene expression post-transcriptionally. In this way they might influence whether a cell is sensitive or resistant to a certain drug. So far, only a limited number of relatively small scale studies comprising few cell lines and/or drugs have been performed. To obtain a broader view on miRNAs and their association with drug response, we investigated the expression levels of 411 miRNAs in relation to drug sensitivity in 36 breast cancer cell lines. For this purpose IC50 values of a drug screen involving 34 drugs were associated with miRNA expression data of the same breast cancer cell lines. Since molecular subtype of the breast cancer cell lines is considered a confounding factor in drug association studies, multivariate analysis taking subtype into account was performed on significant miRNA-drug associations which retained 13 associations. These associations consisted of 11 different miRNAs and eight different drugs (among which Paclitaxel, Docetaxel and Veliparib). The taxanes, Paclitaxel and Docetaxel, were the only drugs having miRNAs in common: hsa-miR-187-5p and hsa-miR-106a-3p indicative of drug resistance while Paclitaxel sensitivity alone associated with hsa-miR-556-5p. Tivantinib was associated with hsa-let-7d-5p and hsa-miR-18a-5p for sensitivity and hsa-miR-637 for resistance. Drug sensitivity was associated with hsa-let-7a-5p for Bortezomib, hsa-miR-135a-3p for JNJ-707 and hsa-miR-185-3p for Panobinostat. Drug resistance was associated with hsa-miR-182-5p for Veliparib and hsa-miR-629-5p for Tipifarnib. Pathway analysis for significant miRNAs was performed to reveal biological roles, aiding to find a potential mechanistic link for the observed associations with drug response. By doing so hsa-miR-187-5p was linked to the cell cycle G2-M checkpoint in line with this checkpoint being the target of taxanes. In conclusion, our study shows that miRNAs could potentially serve as biomarkers for intrinsic drug resistance and that pathway analyses can provide additional information in this context.
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Affiliation(s)
- Katharina Uhr
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Wendy J. C. Prager-van der Smissen
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Anouk A. J. Heine
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Bahar Ozturk
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marijn T. M. van Jaarsveld
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Antonius W. M. Boersma
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Agnes Jager
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Erik A. C. Wiemer
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marcel Smid
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - John A. Foekens
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - John W. M. Martens
- Department of Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
- * E-mail:
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20
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Kalimutho M, Sinha D, Jeffery J, Nones K, Srihari S, Fernando WC, Duijf PH, Vennin C, Raninga P, Nanayakkara D, Mittal D, Saunus JM, Lakhani SR, López JA, Spring KJ, Timpson P, Gabrielli B, Waddell N, Khanna KK. CEP55 is a determinant of cell fate during perturbed mitosis in breast cancer. EMBO Mol Med 2019; 10:emmm.201708566. [PMID: 30108112 PMCID: PMC6127888 DOI: 10.15252/emmm.201708566] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The centrosomal protein, CEP55, is a key regulator of cytokinesis, and its overexpression is linked to genomic instability, a hallmark of cancer. However, the mechanism by which it mediates genomic instability remains elusive. Here, we showed that CEP55 overexpression/knockdown impacts survival of aneuploid cells. Loss of CEP55 sensitizes breast cancer cells to anti‐mitotic agents through premature CDK1/cyclin B activation and CDK1 caspase‐dependent mitotic cell death. Further, we showed that CEP55 is a downstream effector of the MEK1/2‐MYC axis. Blocking MEK1/2‐PLK1 signaling therefore reduced outgrowth of basal‐like syngeneic and human breast tumors in in vivo models. In conclusion, high CEP55 levels dictate cell fate during perturbed mitosis. Forced mitotic cell death by blocking MEK1/2‐PLK1 represents a potential therapeutic strategy for MYC‐CEP55‐dependent basal‐like, triple‐negative breast cancers.
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Affiliation(s)
- Murugan Kalimutho
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia .,School of Natural Sciences, Griffith University, Nathan, Qld, Australia
| | - Debottam Sinha
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia.,School of Natural Sciences, Griffith University, Nathan, Qld, Australia
| | - Jessie Jeffery
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia
| | - Katia Nones
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia.,Queensland Centre for Medical Genomics, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Qld, Australia
| | - Sriganesh Srihari
- Computational Systems Biology Laboratory, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Qld, Australia
| | | | - Pascal Hg Duijf
- University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, Qld, Australia
| | - Claire Vennin
- Cancer Division, Garvan Institute of Medical Research and The Kinghorn Cancer Centre, Sydney, NSW, Australia.,Faculty of Medicine, St Vincent's Clinical School, University of NSW, Sydney, NSW, Australia
| | - Prahlad Raninga
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia
| | | | - Deepak Mittal
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia
| | - Jodi M Saunus
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia.,Centre for Clinical Research, The University of Queensland, Herston, Qld, Australia
| | - Sunil R Lakhani
- Centre for Clinical Research, The University of Queensland, Herston, Qld, Australia.,School of Medicine, The University of Queensland, Herston, Qld, Australia.,Pathology Queensland, The Royal Brisbane and Women's Hospital, Herston, Qld, Australia
| | - J Alejandro López
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia.,School of Natural Sciences, Griffith University, Nathan, Qld, Australia
| | - Kevin J Spring
- Liverpool Clinical School, University of Western Sydney, Liverpool, NSW, Australia.,Ingham Institute, Liverpool Hospital, Liverpool, NSW, Australia.,South Western Sydney Clinical School, University of New South Wales, Liverpool, NSW, Australia
| | - Paul Timpson
- Cancer Division, Garvan Institute of Medical Research and The Kinghorn Cancer Centre, Sydney, NSW, Australia.,Faculty of Medicine, St Vincent's Clinical School, University of NSW, Sydney, NSW, Australia
| | - Brian Gabrielli
- University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, Qld, Australia.,Mater Research Institute, Translational Research Institute, The University of Queensland, Brisbane, Qld, Australia
| | - Nicola Waddell
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia
| | - Kum Kum Khanna
- QIMR Berghofer Medical Research Institute, Herston, Qld, Australia
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21
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Zhou F, Zhang Y, Xu X, Luo J, Yang F, Wang L, Xie S, Sun J, Yang X. Establishment and characterization of three stable Basal/HER2-positive breast cancer cell lines derived from Chinese breast carcinoma with identical missense mutations in the DNA-binding domain of TP53. Cancer Cell Int 2018; 18:118. [PMID: 30140169 PMCID: PMC6098622 DOI: 10.1186/s12935-018-0617-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/09/2018] [Indexed: 12/31/2022] Open
Abstract
Background Basal/human epidermal growth factor receptor (HER)2-positive (HER2+) breast cancer is resistant to monoclonal antibody (herceptin) treatment. There are currently only three basal/HER2+ breast cancer cell lines available, but they are not from Chinese populations. Methods Three immortalized cell lines (ZJU-0327, ZJU-0725, and ZJU-1127) were established from invasive ductal breast carcinoma tissue of two patients treated by surgical resection at our center. The cell lines were characterized in terms of histology, therapeutic response, and biomarker expression. Their tumorigenic potential was evaluated in an athymic nude (BALB/C nu) mouse xenograft model. Cell authentication testing by the techniques of short tandem repeat. Results ZJU-0327, ZJU-0725, and ZJU-1127 cell lines were maintained for more than 110 passages in vitro. The cells grew as monolayers; showed typical epithelial morphology and ultrastructure; were polyploid; had doubling times of 18, 57.5, and 18 h, respectively; had a near-tetraploid (ZJU-0327 and ZJU-1127) or aneuploid (ZJU-0725) karyotype with structural aberrations and tumor protein 53 mutation; insensitive to chemotherapeutic drugs and/or radiation; show high invasiveness and tumorigenicity in mice; and had no mycoplasma contamination. The cell lines were basal/HER2+, expressed cluster of differentiation, and were associated with poor prognosis. Cell authentication testing by the American Type Culture Collection confirmed the human origin of the cell lines, which did not match those in existing databases. Conclusions The three novel basal/HER2+ breast cancer cell lines recapitulating the malignant characteristics of the parent tumor's, and can be useful for clarifying the molecular pathogenesis of basal/HER2+ breast cancer.
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Affiliation(s)
- Fei Zhou
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Yanhua Zhang
- 2Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Xiufang Xu
- Department of Medical Imagine, Hangzhou Medical College, Hangzhou, Zhejiang China
| | - Jingfeng Luo
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Fang Yang
- 2Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Linbo Wang
- 4Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Shuduo Xie
- 4Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Jihong Sun
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Xiaoming Yang
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China.,5Image-Guided Bio-Molecular Intervention Research, Department of Radiology, University of Washington School of Medicine, Seattle, WA USA
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22
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Towards Resolving the Pro- and Anti-Tumor Effects of the Aryl Hydrocarbon Receptor. Int J Mol Sci 2018; 19:ijms19051388. [PMID: 29735912 PMCID: PMC5983651 DOI: 10.3390/ijms19051388] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/27/2018] [Accepted: 04/30/2018] [Indexed: 12/11/2022] Open
Abstract
We have postulated that the aryl hydrocarbon receptor (AHR) drives the later, more lethal stages of some cancers when chronically activated by endogenous ligands. However, other studies have suggested that, under some circumstances, the AHR can oppose tumor aggression. Resolving this apparent contradiction is critical to the design of AHR-targeted cancer therapeutics. Molecular (siRNA, shRNA, AHR repressor, CRISPR-Cas9) and pharmacological (AHR inhibitors) approaches were used to confirm the hypothesis that AHR inhibition reduces human cancer cell invasion (irregular colony growth in 3D Matrigel cultures and Boyden chambers), migration (scratch wound assay) and metastasis (human cancer cell xenografts in zebrafish). Furthermore, these assays were used for a head-to-head comparison between AHR antagonists and agonists. AHR inhibition or knockdown/knockout consistently reduced human ER−/PR−/Her2− and inflammatory breast cancer cell invasion, migration, and metastasis. This was associated with a decrease in invasion-associated genes (e.g., Fibronectin, VCAM1, Thrombospondin, MMP1) and an increase in CDH1/E-cadherin, previously associated with decreased tumor aggression. Paradoxically, AHR agonists (2,3,7,8-tetrachlorodibenzo-p-dioxin and/or 3,3′-diindolylmethane) similarly inhibited irregular colony formation in Matrigel and blocked metastasis in vivo but accelerated migration. These data demonstrate the complexity of modulating AHR activity in cancer while suggesting that AHR inhibitors, and, under some circumstances, AHR agonists, may be useful as cancer therapeutics.
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23
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Dewald JH, Cavdarli S, Steenackers A, Delannoy CP, Mortuaire M, Spriet C, Noël M, Groux-Degroote S, Delannoy P. TNF differentially regulates ganglioside biosynthesis and expression in breast cancer cell lines. PLoS One 2018; 13:e0196369. [PMID: 29698439 PMCID: PMC5919650 DOI: 10.1371/journal.pone.0196369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/11/2018] [Indexed: 12/26/2022] Open
Abstract
Gangliosides are glycosphingolipids concentrated in glycolipid-enriched membrane microdomains. Mainly restricted to the nervous system in healthy adult, complex gangliosides such as GD3 and GD2 have been shown to be involved in aggressiveness and metastasis of neuro-ectoderm derived tumors such as melanoma and neuroblastoma. GD3 synthase (GD3S), the key enzyme that controls the biosynthesis of complex gangliosides, was shown to be over-expressed in Estrogen Receptor (ER)-negative breast cancer tumors, and associated with a decreased overall survival of patients. We previously demonstrated that GD3S expression in ER-negative breast cancer cells induced a proliferative phenotype and an increased tumor growth. In addition, our results clearly indicate that Tumor Necrosis Factor (TNF) induced GD3S over-expression in breast cancer cells via NFκB pathway. In this study, we analyzed the effect of TNF on ganglioside biosynthesis and expression in breast cancer cells from different molecular subtypes. We showed that TNF up-regulated the expression of GD3S in MCF-7 and Hs578T cells, whereas no change was observed for MDA-MB-231. We also showed that TNF induced an increased expression of complex gangliosides at the cell surface of a small proportion of MCF-7 cells. These results demonstrate that TNF differentially regulates gangliosides expression in breast cancer cell lines and establish a possible link between inflammation at the tumor site environment, expression of complex gangliosides and tumor development.
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Affiliation(s)
- Justine H. Dewald
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Sumeyye Cavdarli
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Agata Steenackers
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Clément P. Delannoy
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Marlène Mortuaire
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Corentin Spriet
- University of Lille, Bio Imaging Center Lille, Lille, France
| | - Maxence Noël
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Sophie Groux-Degroote
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
| | - Philippe Delannoy
- University of Lille, Structural and Functional Glycobiology Unit, UMR CNRS 8576, Lille, France
- * E-mail:
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24
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Hedberg A, Knutsen E, Løvhaugen AS, Jørgensen TE, Perander M, Johansen SD. Cancer-specific SNPs originate from low-level heteroplasmic variants in human mitochondrial genomes of a matched cell line pair. Mitochondrial DNA A DNA Mapp Seq Anal 2018; 30:82-91. [PMID: 29671673 DOI: 10.1080/24701394.2018.1461852] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Low-level mitochondrial heteroplasmy is a common phenomenon in both normal and cancer cells. Here, we investigate the link between low-level heteroplasmy and mitogenome mutations in a human breast cancer matched cell line by high-throughput sequencing. We identified 23 heteroplasmic sites, of which 15 were common between normal cells (Hs578Bst) and cancer cells (Hs578T). Most sites were clustered within the highly conserved Complex IV and ribosomal RNA genes. Two heteroplasmic variants in normal cells were found as fixed mutations in cancer cells. This indicates a positive selection of these variants in cancer cells. RNA-Seq analysis identified upregulated L-strand specific transcripts in cancer cells, which include three mitochondrial long non-coding RNA molecules. We hypothesize that this is due to two cancer cell-specific mutations in the control region.
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Affiliation(s)
- Annica Hedberg
- a Department of Medical Biology, Faculty of Health Sciences , UiT - The Arctic University of Norway , Tromsø , Norway
| | - Erik Knutsen
- a Department of Medical Biology, Faculty of Health Sciences , UiT - The Arctic University of Norway , Tromsø , Norway
| | - Anne Silje Løvhaugen
- a Department of Medical Biology, Faculty of Health Sciences , UiT - The Arctic University of Norway , Tromsø , Norway
| | - Tor Erik Jørgensen
- b Genomics Group, Faculty of Biosciences and Aquaculture , Nord University , Bodø , Norway
| | - Maria Perander
- a Department of Medical Biology, Faculty of Health Sciences , UiT - The Arctic University of Norway , Tromsø , Norway
| | - Steinar D Johansen
- a Department of Medical Biology, Faculty of Health Sciences , UiT - The Arctic University of Norway , Tromsø , Norway.,b Genomics Group, Faculty of Biosciences and Aquaculture , Nord University , Bodø , Norway
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25
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Velloso FJ, Sogayar MC, Correa RG. Expression and in vitro assessment of tumorigenicity for NOD1 and NOD2 receptors in breast cancer cell lines. BMC Res Notes 2018; 11:222. [PMID: 29615116 PMCID: PMC5883347 DOI: 10.1186/s13104-018-3335-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 03/28/2018] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Immune-related pathways have been frequently associated to tumorigenesis. NOD1 and NOD2 are innate immune receptors responsible for sensing a subset of bacterial-derived components, and to further translate these pathogenic signals through pro-inflammatory and survival pathways. NOD1 and NOD2 have been further associated with tumorigenesis, particularly in gastrointestinal cancers. NOD1 has also been suggested to be a tumor suppressor gene in a model of estrogen receptor-dependent breast cancer. Contrarily, NOD2 polymorphisms are associated with higher risk of breast cancer, with no tumor suppressor role being reported. To better delineate this issue, we investigated NOD1 and NOD2 expression in a panel of breast cancer cell lines, as well as their potential impact in breast tumorigenesis based on in vitro assays. RESULTS The highly invasive Hs578T breast cell line presented the second highest NOD1 expression and the lowest NOD2 expression in our panel. Therefore, we investigated whether NOD1 and/or NOD2 might act as a tumor suppressor in this cell model. Our studies indicate that overexpression of either NOD1 or NOD2 reduces cell proliferation and increases clonogenic potential in vitro. Elucidation of NOD1 and NOD2 effects on tumor cell viability and proliferation may unveil potential targets for future therapeutic intervention.
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Affiliation(s)
- Fernando J Velloso
- Cell and Molecular Therapy Center (NUCEL-NETCEM), Internal Medicine Department, School of Medicine, University of São Paulo (USP), São Paulo, SP, 05360-130, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL-NETCEM), Internal Medicine Department, School of Medicine, University of São Paulo (USP), São Paulo, SP, 05360-130, Brazil
| | - Ricardo G Correa
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Rd., La Jolla, CA, 92037, USA.
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26
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Rudland PS, Ormerod EJ, Paterson FC. Stem Cells in Rat Mammary Development and Cancer: A Review. J R Soc Med 2018; 73:437-42. [PMID: 7014888 PMCID: PMC1437624 DOI: 10.1177/014107688007300609] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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27
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Castillo D, Gálvez JM, Herrera LJ, Román BS, Rojas F, Rojas I. Integration of RNA-Seq data with heterogeneous microarray data for breast cancer profiling. BMC Bioinformatics 2017; 18:506. [PMID: 29157215 PMCID: PMC5697344 DOI: 10.1186/s12859-017-1925-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 11/06/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Nowadays, many public repositories containing large microarray gene expression datasets are available. However, the problem lies in the fact that microarray technology are less powerful and accurate than more recent Next Generation Sequencing technologies, such as RNA-Seq. In any case, information from microarrays is truthful and robust, thus it can be exploited through the integration of microarray data with RNA-Seq data. Additionally, information extraction and acquisition of large number of samples in RNA-Seq still entails very high costs in terms of time and computational resources.This paper proposes a new model to find the gene signature of breast cancer cell lines through the integration of heterogeneous data from different breast cancer datasets, obtained from microarray and RNA-Seq technologies. Consequently, data integration is expected to provide a more robust statistical significance to the results obtained. Finally, a classification method is proposed in order to test the robustness of the Differentially Expressed Genes when unseen data is presented for diagnosis. RESULTS The proposed data integration allows analyzing gene expression samples coming from different technologies. The most significant genes of the whole integrated data were obtained through the intersection of the three gene sets, corresponding to the identified expressed genes within the microarray data itself, within the RNA-Seq data itself, and within the integrated data from both technologies. This intersection reveals 98 possible technology-independent biomarkers. Two different heterogeneous datasets were distinguished for the classification tasks: a training dataset for gene expression identification and classifier validation, and a test dataset with unseen data for testing the classifier. Both of them achieved great classification accuracies, therefore confirming the validity of the obtained set of genes as possible biomarkers for breast cancer. Through a feature selection process, a final small subset made up by six genes was considered for breast cancer diagnosis. CONCLUSIONS This work proposes a novel data integration stage in the traditional gene expression analysis pipeline through the combination of heterogeneous data from microarrays and RNA-Seq technologies. Available samples have been successfully classified using a subset of six genes obtained by a feature selection method. Consequently, a new classification and diagnosis tool was built and its performance was validated using previously unseen samples.
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Affiliation(s)
- Daniel Castillo
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
| | - Juan Manuel Gálvez
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
| | - Luis Javier Herrera
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
| | - Belén San Román
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
| | - Fernando Rojas
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
| | - Ignacio Rojas
- Department of Computer Architecture and Technology, University of Granada, Periodista Rafael Gómez Montero, 2, Granada, 18014 Spain
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Ahmad A, Strohbuecker S, Tufarelli C, Sottile V. Expression of a SOX1 overlapping transcript in neural differentiation and cancer models. Cell Mol Life Sci 2017; 74:4245-4258. [PMID: 28674729 PMCID: PMC5641280 DOI: 10.1007/s00018-017-2580-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 06/04/2017] [Accepted: 06/26/2017] [Indexed: 12/28/2022]
Abstract
SOX1 is a member of the SOXB1 subgroup of transcription factors involved in early embryogenesis, CNS development and maintenance of neural stem cells. The structure and regulation of the human SOX1 locus has been less studied than that of SOX2, another member of the SOXB1 subgroup for which an overlapping transcript has been reported. Here we report that the SOX1 locus harbours a SOX1 overlapping transcript (SOX1-OT), and describe expression, splicing variants and detection of SOX1-OT in different stem and cancer cells. RT-PCR and RACE experiments were performed to detect and characterise the structure of SOX1-OT in neuroprogenitor cultures and across different cancer cell lines. SOX1-OT was found to present a complex structure including several unannotated exons, different transcript variants and at least two potential transcription start sites. SOX1-OT was found to be highly expressed in differentiated neural stem cells across different time points of differentiation, and its expression correlated with SOX1 gene expression. Concomitant expression of SOX1 and SOX1-OT was further observed in several cancer cell models. While the function of this transcript is unknown, the regulatory role reported for other lncRNAs strongly suggests a possible role for SOX1-OT in regulating SOX1 expression, as previously observed for SOX2. The elucidation of the genetic and regulatory context governing SOX1 expression will contribute to clarifying its role in stem cell differentiation and tumorigenesis.
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Affiliation(s)
- Azaz Ahmad
- Wolfson STEM Centre, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Stephanie Strohbuecker
- Wolfson STEM Centre, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK
| | - Cristina Tufarelli
- Division of Graduate Entry Medicine & Health, School of Medicine, University of Nottingham, Derby, UK.
| | - Virginie Sottile
- Wolfson STEM Centre, Division of Cancer & Stem Cells, School of Medicine, University of Nottingham, Nottingham, UK.
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Lo PK, Zhang Y, Yao Y, Wolfson B, Yu J, Han SY, Duru N, Zhou Q. Tumor-associated myoepithelial cells promote the invasive progression of ductal carcinoma in situ through activation of TGFβ signaling. J Biol Chem 2017; 292:11466-11484. [PMID: 28512126 DOI: 10.1074/jbc.m117.775080] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 05/12/2017] [Indexed: 12/18/2022] Open
Abstract
The normal myoepithelium has a tumor-suppressing nature and inhibits the progression of ductal carcinoma in situ (DCIS) into invasive ductal carcinoma (IDC). Conversely, a growing number of studies have shown that tumor-associated myoepithelial cells have a tumor-promoting effect. Moreover, the exact role of tumor-associated myoepithelial cells in the DCIS-to-IDC development remains undefined. To address this, we explored the role of tumor-associated myoepithelial cells in the DCIS-to-IDC progression. We developed a direct coculture system to study the cell-cell interactions between DCIS cells and tumor-associated myoepithelial cells. Coculture studies indicated that tumor-associated myoepithelial cells promoted the invasive progression of a DCIS cell model in vitro, and mechanistic studies revealed that the interaction with DCIS cells stimulated tumor-associated myoepithelial cells to secrete TGFβ1, which subsequently contributed to activating the TGFβ/Smads pathway in DCIS cells. We noted that activation of the TGFβ signaling pathway promoted the epithelial-mesenchymal transition, basal-like phenotypes, stemness, and invasiveness of DCIS cells. Importantly, xenograft studies further demonstrated that tumor-associated myoepithelial cells enhanced the DCIS-to-IDC progression in vivo Furthermore, we found that TGFβ-mediated induction of oncogenic miR-10b-5p expression and down-regulation of RB1CC1, a miR-10b-5p-targeted tumor-suppressor gene, contributed to the invasive progression of DCIS. Our findings provide the first experimental evidence to directly support the paradigm that altered DCIS-associated myoepithelial cells promote the invasive progression of DCIS into IDC via TGFβ signaling activation.
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Affiliation(s)
- Pang-Kuo Lo
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Yongshu Zhang
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Yuan Yao
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Benjamin Wolfson
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Justine Yu
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Shu-Yan Han
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and.,the Key Laboratory of Carcinogenesis and Translational Research, Department of Integration of Chinese and Western Medicine, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Nadire Duru
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Qun Zhou
- From the Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
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Kohnhorst CL, Kyoung M, Jeon M, Schmitt DL, Kennedy EL, Ramirez J, Bracey SM, Luu BT, Russell SJ, An S. Identification of a multienzyme complex for glucose metabolism in living cells. J Biol Chem 2017; 292:9191-9203. [PMID: 28424264 DOI: 10.1074/jbc.m117.783050] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/17/2017] [Indexed: 01/05/2023] Open
Abstract
Sequential metabolic enzymes in glucose metabolism have long been hypothesized to form multienzyme complexes that regulate glucose flux in living cells. However, it has been challenging to directly observe these complexes and their functional roles in living systems. In this work, we have used wide-field and confocal fluorescence microscopy to investigate the spatial organization of metabolic enzymes participating in glucose metabolism in human cells. We provide compelling evidence that human liver-type phosphofructokinase 1 (PFKL), which catalyzes a bottleneck step of glycolysis, forms various sizes of cytoplasmic clusters in human cancer cells, independent of protein expression levels and of the choice of fluorescent tags. We also report that these PFKL clusters colocalize with other rate-limiting enzymes in both glycolysis and gluconeogenesis, supporting the formation of multienzyme complexes. Subsequent biophysical characterizations with fluorescence recovery after photobleaching and FRET corroborate the formation of multienzyme metabolic complexes in living cells, which appears to be controlled by post-translational acetylation on PFKL. Importantly, quantitative high-content imaging assays indicated that the direction of glucose flux between glycolysis, the pentose phosphate pathway, and serine biosynthesis seems to be spatially regulated by the multienzyme complexes in a cluster-size-dependent manner. Collectively, our results reveal a functionally relevant, multienzyme metabolic complex for glucose metabolism in living human cells.
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Affiliation(s)
- Casey L Kohnhorst
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Minjoung Kyoung
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Miji Jeon
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Danielle L Schmitt
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Erin L Kennedy
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Julio Ramirez
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Syrena M Bracey
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Bao Tran Luu
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Sarah J Russell
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
| | - Songon An
- From the Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland 21250
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Agonist-stimulated phosphatidylinositol-3,4,5-trisphosphate generation by scaffolded phosphoinositide kinases. Nat Cell Biol 2016; 18:1324-1335. [PMID: 27870828 DOI: 10.1038/ncb3441] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 10/20/2016] [Indexed: 12/11/2022]
Abstract
Generation of the lipid messenger phosphatidylinositol-3,4,5-trisphosphate (PtdIns(3,4,5)P3) is crucial for development, cell growth and survival, and motility, and it becomes dysfunctional in many diseases including cancers. Here we reveal a mechanism for PtdIns(3,4,5)P3 generation by scaffolded phosphoinositide kinases. In this pathway, class I phosphatidylinositol-3-OH kinase (PI(3)K) is assembled by IQGAP1 with PI(4)KIIIα and PIPKIα, which sequentially generate PtdIns(3,4,5)P3 from phosphatidylinositol. By scaffolding these kinases into functional proximity, the PtdIns(4,5)P2 generated is selectively used by PI(3)K for PtdIns(3,4,5)P3 generation, which then signals to PDK1 and Akt that are also in the complex. Moreover, multiple receptor types stimulate the assembly of this IQGAP1-PI(3)K signalling complex. Blockade of IQGAP1 interaction with PIPKIα or PI(3)K inhibited PtdIns(3,4,5)P3 generation and signalling, and selectively diminished cancer cell survival, revealing a target for cancer chemotherapy.
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Characterization and Antimicrobial Activity of Volatile Constituents from Fresh Fruits of Alchornea cordifolia and Canthium subcordatum. MEDICINES 2015; 3:medicines3010001. [PMID: 28930111 PMCID: PMC5456229 DOI: 10.3390/medicines3010001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/10/2015] [Accepted: 12/16/2015] [Indexed: 02/05/2023]
Abstract
Bacterial resistance has been increasingly reported worldwide and is one of the major causes of failure in the treatment of infectious diseases. Natural-based products, including plant secondary metabolites (phytochemicals), can be exploited to ameliorate the problem of microbial resistance. The fruit essential oils of Alchornea cordifolia and Canthium subcordatum were obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). The essential oils were subjected to in vitro antibacterial, antifungal and cytotoxic activity screening. Thirty-eight compounds comprising 97.7% of A. cordifolia oil and forty-six constituents representing 98.2% of C. subcordatum oil were identified. The major components in A. cordifolia oil were methyl salicylate (25.3%), citronellol (21.4%), α-phellandrene (7.4%), terpinolene (5.7%) and 1,8-cineole (5.5%). Benzaldehyde (28.0%), β-caryophyllene (15.5%), (E,E)-α-farnesene (5.3%) and methyl salicylate (4.5%) were the quantitatively significant constituents in C. subcordatum fruit essential oil. A. cordifolia essential oil demonstrated potent in vitro antibacterial activity against Staphylococcus aureus (MIC = 78 μg/mL) and marginal antifungal activity against Aspergillus niger (MIC = 156 μg/mL). C. subcordatum showed antibacterial activity against Bacillus cereus and S. aureus (MIC = 156 μg/mL) and notable antifungal activity against A. niger (MIC = 39 μg/mL). However, no appreciable cytotoxic effects on human breast carcinoma cells (Hs 578T) and human prostate carcinoma cells (PC-3) were observed for either essential oil. The antimicrobial activities of A. cordifolia and C. subcordatum fruit essential oils are a function of their distinct chemical profiles; their volatiles and biological activities are reported for the first time.
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Essien EE, Newby JS, Walker TM, Setzer WN, Ekundayo O. Chemotaxonomic Characterization and in-Vitro Antimicrobial and Cytotoxic Activities of the Leaf Essential Oil of Curcuma longa Grown in Southern Nigeria. MEDICINES (BASEL, SWITZERLAND) 2015; 2:340-349. [PMID: 28930216 PMCID: PMC5456208 DOI: 10.3390/medicines2040340] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/04/2015] [Accepted: 12/14/2015] [Indexed: 04/20/2023]
Abstract
UNLABELLED Curcuma longa (turmeric) has been used in Chinese traditional medicine and Ayurvedic medicine for many years. METHODS The leaf essential oil of C. longa from southern Nigeria was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). The essential oil was screened for in vitro antibacterial, antifungal, and cytotoxic activities. The major components in C. longa leaf oil were ar-turmerone (63.4%), α-turmerone (13.7%), and β-turmerone (12.6%). A cluster analysis has revealed this to be a new essential oil chemotype of C. longa. The leaf oil showed notable antibacterial activity to Bacillus cereus and Staphylococcus aureus, antifungal activity to Aspergillus niger, and cytotoxic activity to Hs 578T (breast tumor) and PC-3 (prostate tumor) cells. The ar-turmerone-rich leaf essential oil of C. longa from Nigeria has shown potent biological activity and therapeutic promise.
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Affiliation(s)
- Emmanuel E Essien
- Department of Chemistry, University of Uyo, Akwa Ibom State 520101, Nigeria.
| | - Jennifer Schmidt Newby
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
| | - Tameka M Walker
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
| | - William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
| | - Olusegun Ekundayo
- Department of Chemistry, University of Ibadan, Ibadan 200284, Nigeria.
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Compositional Variation and Bioactivity of the Leaf Essential Oil of Montanoa guatemalensis from Monteverde, Costa Rica: A Preliminary Investigation. MEDICINES 2015; 2:331-339. [PMID: 28930215 PMCID: PMC5456209 DOI: 10.3390/medicines2040331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 11/11/2015] [Accepted: 11/17/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Montanoa guatemalensis is a small to medium-sized tree in the Asteraceae that grows in Central America from Mexico south through Costa Rica. There have been no previous investigations on the essential oil of this tree. METHODS The leaf essential oils of M. guatemalensis were obtained from different individual trees growing in Monteverde, Costa Rica, in two different years, and were analyzed by gas chromatography-mass spectrometry. RESULTS The leaf oils from 2008 were rich in sesquiterpenoids, dominated by α-selinene, β-selinene, and cyclocolorenone, with lesser amounts of the monoterpenes α-pinene and limonene. In contrast, the samples from 2009 showed no α- or β-selinene, but large concentrations of trans-muurola-4(14),5-diene, β-cadinene, and cyclocolorenone, along with greater concentrations of α-pinene and limonene. The leaf oils were screened for cytotoxic and antimicrobial activities and did show selective cytotoxic activity on MDA-MB-231 breast tumor cells. CONCLUSION M. guatemalensis leaf oil, rich in cyclocolorenone, α-selinene, and β-selinene, showed selective in vitro cytotoxic activity to MDA-MB-231 cells. The plant may be a good source of cyclocolorenone.
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Wang X, Sang X, Diorio C, Lin SX, Doillon CJ. In vitro interactions between mammary fibroblasts (Hs 578Bst) and cancer epithelial cells (MCF-7) modulate aromatase, steroid sulfatase and 17β-hydroxysteroid dehydrogenases. Mol Cell Endocrinol 2015; 412:339-48. [PMID: 26044867 DOI: 10.1016/j.mce.2015.05.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 05/16/2015] [Accepted: 05/26/2015] [Indexed: 12/21/2022]
Abstract
Our objectives were to investigate the interactions between mammary cancer epithelial cells (MCF-7) and stromal cells (Hs-578Bst) at the level of the expression and inhibition of steroidogenesis enzymes by using monolayer and three dimensional co-culture models. Expressions of steroidogenesis enzymes and E2/DHT conversions in co-cultured MCF-7 and Hs-578Bst cells as well as the effects of aromatase inhibitor combined to steroid sulfatase (STS) and 17β-hydroxysteroid dehydrogenases (17βHSDs) inhibitors were evaluated. 17β-HSD type 7 was mostly modulated in MCF-7 cells whereas aromatase was mostly regulated in Hs578Bst cells thereby increasing E2 conversion and MCF-7 cell growth. A combination of inhibitors toward aromatase, STS and 17β-HSD7, was found to be the most significant treatment in decreasing E2 and elevating DHT thus inhibiting MCF-7 cell proliferation and spheroid-like cancer cell aggregation in collagen gel. The interactions between those cells modulated E2 formation in paracrine/intracrine manners by synergistically regulating aromatase, 17β-HSD7 and STS. Among tumor-associated cells, stromal fibroblasts may participate in intratumoral E2 deposition; therefore promoting breast cancer cell growth.
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Affiliation(s)
- Xiaoqiang Wang
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Xiaoye Sang
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Caroline Diorio
- Centre des Maladie du Sein Deschênes-Fabia, Hôpital du Saint-Sacrement, 1050, Chemin Sainte-Foy, Quebec City, G1S 4L8, Canada; Department of Social and Preventive Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Sheng-Xiang Lin
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Charles J Doillon
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Surgery, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada.
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Benesch MGK, Tang X, Dewald J, Dong WF, Mackey JR, Hemmings DG, McMullen TPW, Brindley DN. Tumor-induced inflammation in mammary adipose tissue stimulates a vicious cycle of autotaxin expression and breast cancer progression. FASEB J 2015; 29:3990-4000. [DOI: 10.1096/fj.15-274480] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 05/26/2015] [Indexed: 02/06/2023]
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Nek2 activation of Kif24 ensures cilium disassembly during the cell cycle. Nat Commun 2015; 6:8087. [PMID: 26290419 PMCID: PMC4545512 DOI: 10.1038/ncomms9087] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 07/16/2015] [Indexed: 01/07/2023] Open
Abstract
Many proteins are known to promote ciliogenesis, but mechanisms that promote primary cilia disassembly before mitosis are largely unknown. Here we identify a mechanism that favours cilium disassembly and maintains the disassembled state. We show that co-localization of the S/G2 phase kinase, Nek2 and Kif24 triggers Kif24 phosphorylation, inhibiting cilia formation. We show that Kif24, a microtubule depolymerizing kinesin, is phosphorylated by Nek2, which stimulates its activity and prevents the outgrowth of cilia in proliferating cells, independent of Aurora A and HDAC6. Our data also suggest that cilium assembly and disassembly are in dynamic equilibrium, but Nek2 and Kif24 can shift the balance toward disassembly. Further, Nek2 and Kif24 are overexpressed in breast cancer cells, and ablation of these proteins restores ciliation in these cells, thereby reducing proliferation. Thus, Kif24 is a physiological substrate of Nek2, which regulates cilia disassembly through a concerted mechanism involving Kif24-mediated microtubule depolymerization. Most differentiated mammalian cells assemble a primary cilium, which serves as a cellular ‘antenna' for sensing and responding to the extracellular environment. Here the authors show that Nek2-mediated phosphorylation of Kif24 further promotes the loss of primary cilia, triggered by Aurora A and HDAC6 on cell cycle re-entry.
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Potts MB, McMillan EA, Rosales TI, Kim HS, Ou YH, Toombs JE, Brekken RA, Minden MD, MacMillan JB, White MA. Mode of action and pharmacogenomic biomarkers for exceptional responders to didemnin B. Nat Chem Biol 2015; 11:401-8. [PMID: 25867045 PMCID: PMC4433765 DOI: 10.1038/nchembio.1797] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/20/2015] [Indexed: 12/11/2022]
Abstract
Modern cancer treatment employs many effective chemotherapeutic agents originally discovered from natural sources. The cyclic depsipeptide didemnin B has demonstrated impressive anticancer activity in preclinical models. Clinical use has been approved but is limited by sparse patient responses combined with toxicity risk and an unclear mechanism of action. From a broad-scale effort to match antineoplastic natural products to their cellular activities, we found that didemnin B selectively induces rapid and wholesale apoptosis through dual inhibition of PPT1 and EEF1A1. Furthermore, empirical discovery of a small panel of exceptional responders to didemnin B allowed the generation of a regularized regression model to extract a sparse-feature genetic biomarker capable of predicting sensitivity to didemnin B. This may facilitate patient selection in a fashion that could enhance and expand the therapeutic application of didemnin B against neoplastic disease.
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Affiliation(s)
- Malia B. Potts
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Elizabeth A. McMillan
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Tracy I. Rosales
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Hyun Seok Kim
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Yi-Hung Ou
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Jason E. Toombs
- Division of Surgical Oncology, Department of Surgery, Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Rolf A. Brekken
- Division of Surgical Oncology, Department of Surgery, Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Mark D. Minden
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5S 1A8, Canada. Ontario Cancer Institute and Princess Margaret Hospital, University Health Network, Toronto, Ontario M5T 2M9, Canada
| | - John B. MacMillan
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Michael A. White
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
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Zhang Y, Nicolau A, Lima CF, Rodrigues LR. Bovine lactoferrin induces cell cycle arrest and inhibits mTOR signaling in breast cancer cells. Nutr Cancer 2014; 66:1371-85. [PMID: 25356800 DOI: 10.1080/01635581.2014.956260] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lactoferrin (LF) is predominantly found in mammalian secretions with recognized anticancer potential, although the mechanisms involved in such activity are still unclear. Here, the stability, internalization, and cytotoxicity of bovine LF (bLF) and its variants were tested against a panel of breast cancer cells. bLF was found to be very stable under incubation with cells and also able to internalize them, although most of the protein remained in the culture medium. Furthermore, bLF (up to 30 μM) inhibited the growth of breast cancer cells (T-47D, MDA-MB-231, Hs578T, and MCF-7) in a higher extent than in the normal counterpart cell line (MCF-10-2A), thus suggesting its selectivity. Regarding its variants, only the iron-saturated protein showed a higher activity compared with the commercial bLF. bLF growth inhibitory activity was associated with the induction of cell cycle arrest, but not with apoptosis. Moreover, exposure to bLF increased the cells phospho-AMPKα levels and decreased both phospho threonine mammalian target of rapamycin (mTOR) and total mTOR levels, indicating a novel mechanism of action through its ability to induce nutrient/energy-related stress. This study disclosed important findings to better understand the mechanisms underlying the bLF effects on breast cancer cell lines, which could be valuable for novel advances in the cancer research field.
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Affiliation(s)
- Yunlei Zhang
- a Centre of Biological Engineering, University of Minho, Braga Portugal and College of Life Science, Hunan Provincial Key Laboratory of Microbial Molecular Biology-State Key Laboratory Breeding Base of Microbial Molecular Biology , Hunan Normal University , Changsha , China
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The effect of chemotherapeutic agents on telomere length maintenance in breast cancer cell lines. Breast Cancer Res Treat 2014; 145:581-91. [PMID: 24807106 PMCID: PMC4031391 DOI: 10.1007/s10549-014-2975-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 04/17/2014] [Indexed: 11/28/2022]
Abstract
Mammalian telomeric DNA consists of tandem repeats of the sequence TTAGGG associated with a specialized set of proteins, known collectively as Shelterin. These telosomal proteins protect the ends of chromosomes against end-to-end fusion and degradation. Short telomeres in breast cancer cells confer telomere dysfunction and this can be related to Shelterin proteins and their level of expression in breast cancer cell lines. This study investigates whether expression of Shelterin and Shelterin-associated proteins are altered, and influence the protection and maintenance of telomeres, in breast cancer cells. 5-aza-2′-deoxycytidine (5-aza-CdR) and trichostatin A (TSA) were used in an attempt to reactivate the expression of silenced genes. Our studies have shown that Shelterin and Shelterin-associated genes were down-regulated in breast cancer cell lines; this may be due to epigenetic modification of DNA as the promoter region of POT1 was found to be partially methylated. Shelterin genes expression was up-regulated upon treatment of 21NT breast cancer cells with 5-aza-CdR and TSA. The telomere length of treated 21NT cells was measured by q-PCR showed an increase in telomere length at different time points. Our studies have shown that down-regulation of Shelterin genes is partially due to methylation in some epithelial breast cancer cell lines. Removal of epigenetic silencing results in up-regulation of Shelterin and Shelterin-associated genes which can then lead to telomere length elongation and stability.
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Reaves DK, Fagan-Solis KD, Dunphy K, Oliver SD, Scott DW, Fleming JM. The role of lipolysis stimulated lipoprotein receptor in breast cancer and directing breast cancer cell behavior. PLoS One 2014; 9:e91747. [PMID: 24637461 PMCID: PMC3956714 DOI: 10.1371/journal.pone.0091747] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 02/14/2014] [Indexed: 01/23/2023] Open
Abstract
The claudin-low molecular subtype of breast cancer is of particular interest for clinically the majority of these tumors are poor prognosis, triple negative, invasive ductal carcinomas. Claudin-low tumors are characterized by cancer stem cell-like features and low expression of cell junction and adhesion proteins. Herein, we sought to define the role of lipolysis stimulated lipoprotein receptor (LSR) in breast cancer and cancer cell behavior as LSR was recently correlated with tumor-initiating features. We show that LSR was expressed in epithelium, endothelium, and stromal cells within the healthy breast tissue, as well as in tumor epithelium. In primary breast tumor bioposies, LSR expression was significantly correlated with invasive ductal carcinomas compared to invasive lobular carcinomas, as well as ERα positive tumors and breast cancer cell lines. LSR levels were significantly reduced in claudin-low breast cancer cell lines and functional studies illustrated that re-introduction of LSR into a claudin-low cell line suppressed the EMT phenotype and reduced individual cell migration. However, our data suggest that LSR may promote collective cell migration. Re-introduction of LSR in claudin-low breast cancer cell lines reestablished tight junction protein expression and correlated with transepithelial electrical resistance, thereby reverting claudin-low lines to other intrinsic molecular subtypes. Moreover, overexpression of LSR altered gene expression of pathways involved in transformation and tumorigenesis as well as enhanced proliferation and survival in anchorage independent conditions, highlighting that reestablishment of LSR signaling promotes aggressive/tumor initiating cell behaviors. Collectively, these data highlight a direct role for LSR in driving aggressive breast cancer behavior.
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Affiliation(s)
- Denise K. Reaves
- Department of Biology, North Carolina Central University, Durham, North Carolina, United States of America
| | - Katerina D. Fagan-Solis
- Department of Biology, North Carolina Central University, Durham, North Carolina, United States of America
| | - Karen Dunphy
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, United States of America
| | - Shannon D. Oliver
- Department of Biology, North Carolina Central University, Durham, North Carolina, United States of America
| | - David W. Scott
- Department of Cell Physiology and Cell Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Jodie M. Fleming
- Department of Biology, North Carolina Central University, Durham, North Carolina, United States of America
- * E-mail:
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Ramdzan ZM, Vadnais C, Pal R, Vandal G, Cadieux C, Leduy L, Davoudi S, Hulea L, Yao L, Karnezis AN, Paquet M, Dankort D, Nepveu A. RAS transformation requires CUX1-dependent repair of oxidative DNA damage. PLoS Biol 2014; 12:e1001807. [PMID: 24618719 PMCID: PMC3949673 DOI: 10.1371/journal.pbio.1001807] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 01/29/2014] [Indexed: 01/19/2023] Open
Abstract
The base excision repair (BER) that repairs oxidative damage is upregulated as an adaptive response in maintaining tumorigenesis of RAS-transformed cancer cells. The Cut homeobox 1 (CUX1) gene is a target of loss-of-heterozygosity in many cancers, yet elevated CUX1 expression is frequently observed and is associated with shorter disease-free survival. The dual role of CUX1 in cancer is illustrated by the fact that most cell lines with CUX1 LOH display amplification of the remaining allele, suggesting that decreased CUX1 expression facilitates tumor development while increased CUX1 expression is needed in tumorigenic cells. Indeed, CUX1 was found in a genome-wide RNAi screen to identify synthetic lethal interactions with oncogenic RAS. Here we show that CUX1 functions in base excision repair as an ancillary factor for the 8-oxoG-DNA glycosylase, OGG1. Single cell gel electrophoresis (comet assay) reveals that Cux1+/− MEFs are haploinsufficient for the repair of oxidative DNA damage, whereas elevated CUX1 levels accelerate DNA repair. In vitro base excision repair assays with purified components demonstrate that CUX1 directly stimulates OGG1's enzymatic activity. Elevated reactive oxygen species (ROS) levels in cells with sustained RAS pathway activation can cause cellular senescence. We show that elevated expression of either CUX1 or OGG1 prevents RAS-induced senescence in primary cells, and that CUX1 knockdown is synthetic lethal with oncogenic RAS in human cancer cells. Elevated CUX1 expression in a transgenic mouse model enables the emergence of mammary tumors with spontaneous activating Kras mutations. We confirmed cooperation between KrasG12V and CUX1 in a lung tumor model. Cancer cells can overcome the antiproliferative effects of excessive DNA damage by inactivating a DNA damage response pathway such as ATM or p53 signaling. Our findings reveal an alternate mechanism to allow sustained proliferation in RAS-transformed cells through increased DNA base excision repair capability. The heightened dependency of RAS-transformed cells on base excision repair may provide a therapeutic window that could be exploited with drugs that specifically target this pathway. In the context of tumor development and progression, mutations are believed to accumulate owing to compromised DNA repair. Such mutations promote oncogenic growth. Yet cancer cells also need to sustain a certain level of DNA repair in order to replicate their DNA and successfully proliferate. Here we show that cancer cells that harbor an activated RAS oncogene exhibit heightened DNA repair capability, specifically in the base excision repair (BER) pathway that repairs oxidative DNA damage. RAS oncogenes alone do not transform primary cells but rather cause their senescence—that is, they stop dividing. As such, cellular senescence in this context is proposed to function as a tumor-suppressive mechanism. We show that CUX1, a protein that accelerates oxidative DNA damage repair, prevents cells from senescing and enables proliferation in the presence of a RAS oncogene. Consistent with this, RAS-induced senescence is also prevented by ectopic expression of OGG1, the DNA glycosylase that removes 8-oxoguanine, the most abundant oxidized base. Strikingly, CUX1 expression in transgenic mice enables the emergence of tumors with spontaneous activating Kras mutations. Conversely, knockdown of CUX1 is synthetic lethal for RAS-transformed cells, thereby revealing a potential Achilles' heel of these cancer cells. Overall, the work provides insight into understanding the role of DNA repair in cancer progression, showing that while DNA damage-induced mutations promote tumorigenesis, sustained RAS-dependent tumorigenesis requires suppression of DNA damage. The heightened dependency of RAS-transformed cells on base excision repair may provide a therapeutic window that could be exploited with drugs that specifically target this pathway.
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Affiliation(s)
| | - Charles Vadnais
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Ranjana Pal
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
| | - Guillaume Vandal
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Chantal Cadieux
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Lam Leduy
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
| | - Sayeh Davoudi
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Laura Hulea
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Lu Yao
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Anthony N. Karnezis
- BC Cancer Agency, Centre for Translational and Applied Genomics, Vancouver, British Columbia, Canada
| | - Marilène Paquet
- Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, Quebec, Canada
| | - David Dankort
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biology, McGill University, Montreal, Quebec, Canada
- * E-mail: (D.D.); (A.N.)
| | - Alain Nepveu
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Oncology McGill University, Montreal, Quebec, Canada
- * E-mail: (D.D.); (A.N.)
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Bobowski M, Vincent A, Steenackers A, Colomb F, Van Seuningen I, Julien S, Delannoy P. Estradiol represses the G(D3) synthase gene ST8SIA1 expression in human breast cancer cells by preventing NFκB binding to ST8SIA1 promoter. PLoS One 2013; 8:e62559. [PMID: 23626833 PMCID: PMC3633854 DOI: 10.1371/journal.pone.0062559] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 03/23/2013] [Indexed: 12/13/2022] Open
Abstract
Recent data have underlined a possible role of G(D3) synthase (GD3S) and complex gangliosides in Estrogen Receptor (ER) negative breast cancer progression. Here, we describe the main transcript of the GD3S coding gene ST8SIA1 expressed in breast tumors. We characterized the corresponding core promoter in Hs578T breast cancer cells and showed that estradiol decreases ST8SIA1 mRNA expression in ER-positive MCF-7 cells and ERα-transfected ER-negative Hs578T cells. The activity of the core promoter sequence of ST8SIA1 is also repressed by estradiol. The core promoter of ST8SIA1 contains two putative Estrogen Response Elements (ERE) that were not found to be involved in the promoter activity pathway. However, NFκB was shown to be involved in ST8SIA1 transcriptional activation and we demonstrated that estradiol prevents NFκB to bind to ST8SIA1 core promoter in ERα expressing breast cancer cells by inhibiting p65 and p50 nucleus localization. The activation of NFκB pathway in ER-negative tumors, due to the absence of estradiol signaling, might explain the overexpression of G(D3) synthase in this tumor subtype.
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Affiliation(s)
- Marie Bobowski
- University Lille Nord de France, Lille, France
- Université des Sciences et Technologies de Lille (USTL), Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Villeneuve d’Ascq, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8576, Villeneuve d’Ascq, France
| | - Audrey Vincent
- University Lille Nord de France, Lille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Jean Pierre Aubert Research Center, Lille, France
- Centre Hospitalier Régional et Universitaire de Lille, Lille, France
| | - Agata Steenackers
- University Lille Nord de France, Lille, France
- Université des Sciences et Technologies de Lille (USTL), Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Villeneuve d’Ascq, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8576, Villeneuve d’Ascq, France
| | - Florent Colomb
- University Lille Nord de France, Lille, France
- Université des Sciences et Technologies de Lille (USTL), Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Villeneuve d’Ascq, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8576, Villeneuve d’Ascq, France
| | - Isabelle Van Seuningen
- University Lille Nord de France, Lille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Jean Pierre Aubert Research Center, Lille, France
- Centre Hospitalier Régional et Universitaire de Lille, Lille, France
| | - Sylvain Julien
- University Lille Nord de France, Lille, France
- Université des Sciences et Technologies de Lille (USTL), Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Villeneuve d’Ascq, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8576, Villeneuve d’Ascq, France
| | - Philippe Delannoy
- University Lille Nord de France, Lille, France
- Université des Sciences et Technologies de Lille (USTL), Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), Villeneuve d’Ascq, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 8576, Villeneuve d’Ascq, France
- * E-mail:
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Thakur S, Feng X, Qiao Shi Z, Ganapathy A, Kumar Mishra M, Atadja P, Morris D, Riabowol K. ING1 and 5-azacytidine act synergistically to block breast cancer cell growth. PLoS One 2012; 7:e43671. [PMID: 22916295 PMCID: PMC3423394 DOI: 10.1371/journal.pone.0043671] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 07/23/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Inhibitor of Growth (ING) proteins are epigenetic "readers" that recognize trimethylated lysine 4 of histone H3 (H3K4Me3) and target histone acetyl transferase (HAT) and histone deacetylase (HDAC) complexes to chromatin. METHODS AND PRINCIPAL FINDINGS Here we asked whether dysregulating two epigenetic pathways with chemical inhibitors showed synergistic effects on breast cancer cell line killing. We also tested whether ING1 could synergize better with chemotherapeutics that target the same epigenetic mechanism such as the HDAC inhibitor LBH589 (Panobinostat) or a different epigenetic mechanism such as 5-azacytidine (5azaC), which inhibits DNA methyl transferases. Simultaneous treatment of breast cancer cell lines with LBH589 and 5azaC did not show significant synergy in killing cells. However, combination treatment of ING1 with either LBH589 or 5azaC did show synergy. The combination of ING1b with 5azaC, which targets two distinct epigenetic mechanisms, was more effective at lower doses and enhanced apoptosis as determined by Annexin V staining and cleavage of caspase 3 and poly-ADP-ribose polymerase (PARP). ING1b plus 5azaC also acted synergistically to increase γH2AX staining indicating significant levels of DNA damage were induced. Adenoviral delivery of ING1b with 5azaC also inhibited cancer cell growth in a murine xenograft model and led to tumor regression when viral concentration was optimized in vivo. CONCLUSIONS These data show that targeting distinct epigenetic pathways can be more effective in blocking cancer cell line growth than targeting the same pathway with multiple agents, and that using viral delivery of epigenetic regulators can be more effective in synergizing with a chemical agent than using two chemotherapeutic agents. This study also indicates that the ING1 epigenetic regulator may have additional activities in the cell when expressed at high levels.
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Affiliation(s)
- Satbir Thakur
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Xiaolan Feng
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Zhong Qiao Shi
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- Department of Medicine and Oncology, University of Calgary, Tom Baker Cancer Center, Calgary, Alberta, Canada
| | - Amudha Ganapathy
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
| | - Manoj Kumar Mishra
- Department of Oncology and Clinical Neuroscience, University of Calgary, Calgary, Alberta, Canada
| | - Peter Atadja
- Novartis Institute for Biomedical Research, Shanghai, China
| | - Don Morris
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- Department of Medicine and Oncology, University of Calgary, Tom Baker Cancer Center, Calgary, Alberta, Canada
| | - Karl Riabowol
- Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, Alberta, Canada
- Southern Alberta Cancer Research Institute, Calgary, Alberta, Canada
- * E-mail:
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Park NI, Rogan PK, Tarnowski HE, Knoll JH. Structural and genic characterization of stable genomic regions in breast cancer: relevance to chemotherapy. Mol Oncol 2012; 6:347-59. [PMID: 22342187 PMCID: PMC5528331 DOI: 10.1016/j.molonc.2012.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 11/28/2011] [Accepted: 01/02/2012] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cancer genomes accumulate frequent and diverse chromosomal abnormalities as well as gene mutations but must maintain the ability to survive in vivo. We hypothesize that genetic selection acts to maintain tumour survival by preserving copy number of specific genes and genomic regions. Genomic regions and genes that remain unaltered in copy number and expression, respectively, may be essential for maintaining tumour survival. METHODS We analyzed copy number data of 243 previously reported breast tumours and computationally derived stable copy number regions. To identify genes in stable copy number regions with nominal changes in expression, datasets for tumour and normal samples were compared. Results were replicated by analysis of a series of independent copy number, expression and genomic sequencing studies. A subset of stable regions, including stable paralogous regions, were confirmed by quantitative PCR and fluorescence in situ hybridization (FISH) in 5 breast cancer cell lines. We deduced a comprehensive set of dually stable genes (i.e. maintaining nominal copy number and expression) which were categorized according to pathway and ontology assignments. The stability of genes encoding therapeutic drug targets was also assessed. RESULTS AND CONCLUSION Tumour genome analysis revealed 766 unstable (amplified and/or deleted) and 812 stable contiguous genomic regions. Replication analysis of an independent set of 171 breast tumours confirmed copy number stability of 1.3 Gb of the genome. We found that 5804 of these genes were dually stable. The composition of this gene set remained essentially unchanged (<2% reduction) after accounting for commonly mutated breast cancer genes found by sequencing and differential expression. The stable breast cancer genome is enriched for cellular metabolism, regulation of gene expression, DNA packaging (chromatin and nucleosome assembly), and regulation of apoptosis functions. Stable genes participating in multiple essential pathways were consistently found to be targets of chemotherapies. Preservation of stable, essential genes may be related to the effectiveness of certain chemotherapeutic agents that act on multiple gene products in this set.
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Affiliation(s)
- Nicole I. Park
- Department of Pathology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Peter K. Rogan
- Department of Biochemistry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Department of Computer Science, University of Western Ontario, London, ON, Canada
| | - Heather E. Tarnowski
- Department of Pathology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Joan H.M. Knoll
- Department of Pathology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Molecular Pathology, Laboratory Medicine Program, London Health Sciences Centre, ON, Canada
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Essien EE, Ogunwande IA, Setzer WN, Ekundayo O. Chemical composition, antimicrobial, and cytotoxicity studies on S. erianthum and S. macranthum essential oils. PHARMACEUTICAL BIOLOGY 2012; 50:474-480. [PMID: 22136358 DOI: 10.3109/13880209.2011.614623] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Solanum erianthum D. Don and Solanum macranthum Dunal (Solanaceae) are widely used in traditional medicine. The leaves act as an abortifacient and in particular to treat leucorrhoea, sores, and skin irritations. OBJECTIVE This study was undertaken to characterize the volatile constituents of the leaf and fruit essential oils of S. erianthum and S. macranthum; their antimicrobial and in vitro cytotoxic bioassay against human breast and prostate tumor cells. METHODS The volatile oils were obtained by hydrodistillation and analyzed for their constituents by gas chromatography-mass spectrometry (GC-MS). Minimum Inhibitory Concentrations (MIC) were determined using the microbroth dilution technique while the cytotoxic potentials were evaluated using the Cell Titre 96((R)) AQ(ueous) Non-Radioactive Cell Proliferation Assay method. RESULTS Solanum erianthum essential oils were characterized by the abundance of α-terpinolene (17.8%), α-phellandrene (17.5%), p-cymene (15.7%) and β-pinene (11.7%) in the leaves; α-humulene (23.1%), humulene epoxide II (20.0%), caryophyllene oxide (16.5%), methyl salicylate (11.8%) and β-caryophyllene (10.9%) in the fruits. The leaf oil of S. macranthum consisted of (E)-phytol (29.0%), pentadecanal (28.1%) and pentadecane (7.7%) while the major fruit oil constituents were α-humulene (36.5%), β-caryophyllene (17.8%), ethyl palmitate (9.4%), and methyl salicylate (8.2%). Solanum erianthum leaf volatile oil demonstrated potent inhibitory activity against Hs 578T and PC-3 human breast and prostate tumor cells respectively. In addition, the Solanum essential oils exhibited significant antimicrobial activity (19.5-625 µg/mL) on pathogens employed in the assay. CONCLUSION The Solanum essential oils possess strong antimicrobial activity in addition to the potent cytotoxic potential of S. erianthum leaf oil against Hs 578T and PC-3 cells.
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Affiliation(s)
- E E Essien
- Department of Chemistry, University of Uyo, Uyo, Akwa Ibom State, Nigeria.
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Araya JJ, Kindscher K, Timmermann BN. Cytotoxic cardiac glycosides and other compounds from Asclepias syriaca. JOURNAL OF NATURAL PRODUCTS 2012; 75:400-407. [PMID: 22316168 DOI: 10.1021/np2008076] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Phytochemical investigation of the dried biomass of Asclepias syriaca afforded five new compounds (1-5), along with 19 known structures. Overall, the secondary metabolites isolated and identified from this plant showed a wide structural diversity including pentacyclic triterpenes, cardiac glycosides, flavonoid glycosides, lignans, a phenylethanoid, and a glycosylated megastigmane. In addition, the isolates were tested against the cancer breast cell line Hs578T, and those showing IC(50) values lower than 50 μM (1 and 6-9) were further investigated in three additional breast cancer cell lines (MCF-7, T47D, and Sk-Br-3) and the normal breast cell line Hs578Bst.
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Affiliation(s)
- Juan J Araya
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
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Chavez KJ, Garimella SV, Lipkowitz S. Triple negative breast cancer cell lines: one tool in the search for better treatment of triple negative breast cancer. Breast Dis 2012; 32:35-48. [PMID: 21778573 DOI: 10.3233/bd-2010-0307] [Citation(s) in RCA: 445] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kathryn J Chavez
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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49
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Nath S, Spencer VA, Han J, Chang H, Zhang K, Fontenay GV, Anderson C, Hyman JM, Nilsen-Hamilton M, Chang YT, Parvin B. Identification of fluorescent compounds with non-specific binding property via high throughput live cell microscopy. PLoS One 2012; 7:e28802. [PMID: 22242152 PMCID: PMC3252290 DOI: 10.1371/journal.pone.0028802] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 11/15/2011] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Compounds exhibiting low non-specific intracellular binding or non-stickiness are concomitant with rapid clearing and in high demand for live-cell imaging assays because they allow for intracellular receptor localization with a high signal/noise ratio. The non-stickiness property is particularly important for imaging intracellular receptors due to the equilibria involved. METHOD Three mammalian cell lines with diverse genetic backgrounds were used to screen a combinatorial fluorescence library via high throughput live cell microscopy for potential ligands with high in- and out-flux properties. The binding properties of ligands identified from the first screen were subsequently validated on plant root hair. A correlative analysis was then performed between each ligand and its corresponding physiochemical and structural properties. RESULTS The non-stickiness property of each ligand was quantified as a function of the temporal uptake and retention on a cell-by-cell basis. Our data shows that (i) mammalian systems can serve as a pre-screening tool for complex plant species that are not amenable to high-throughput imaging; (ii) retention and spatial localization of chemical compounds vary within and between each cell line; and (iii) the structural similarities of compounds can infer their non-specific binding properties. CONCLUSION We have validated a protocol for identifying chemical compounds with non-specific binding properties that is testable across diverse species. Further analysis reveals an overlap between the non-stickiness property and the structural similarity of compounds. The net result is a more robust screening assay for identifying desirable ligands that can be used to monitor intracellular localization. Several new applications of the screening protocol and results are also presented.
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Affiliation(s)
- Sangeeta Nath
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Virginia A. Spencer
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Ju Han
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Hang Chang
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Kai Zhang
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Gerald V. Fontenay
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Charles Anderson
- Energy Biosciences Institute, University of California, Berkeley, California, United States of America
| | - Joel M. Hyman
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Marit Nilsen-Hamilton
- Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America
| | - Young-Tae Chang
- Department of Chemistry and MedChem Program of Life Sciences Institute, National University of Singapore, and Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore, Republic of Singapore
| | - Bahram Parvin
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
- * E-mail:
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Cmarik JL, Troxler JA, Hanson CA, Zhang X, Ruscetti SK. The human lung adenocarcinoma cell line EKVX produces an infectious xenotropic murine leukemia virus. Viruses 2011; 3:2442-61. [PMID: 22355448 PMCID: PMC3280514 DOI: 10.3390/v3122442] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 11/22/2011] [Accepted: 12/09/2011] [Indexed: 01/07/2023] Open
Abstract
The cell lines of the NCI-60 panel represent different cancer types and have been widely utilized for drug screening and molecular target identification. Screening these cell lines for envelope proteins or gene sequences related to xenotropic murine leukemia viruses (X-MLVs) revealed that one cell line, EKVX, was a candidate for production of an infectious gammaretrovirus. The presence of a retrovirus infectious to human cells was confirmed by the cell-free transmission of infection to the human prostate cancer cell line LNCaP. Amplification and sequencing of additional proviral sequences from EKVX confirmed a high degree of similarity to X-MLV. The cell line EKVX was established following passage of the original tumor cells through nude mice, providing a possible source of the X-MLV found in the EKVX cells.
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Affiliation(s)
- Joan L Cmarik
- Laboratory of Cancer Prevention, National Cancer Institute-Frederick, Frederick, MD 21702, USA.
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