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Samson J, Derlipanska M, Zaheed O, Dean K. Molecular and cellular characterization of two patient-derived ductal carcinoma in situ (DCIS) cell lines, ETCC-006 and ETCC-010. BMC Cancer 2021; 21:790. [PMID: 34238275 PMCID: PMC8268371 DOI: 10.1186/s12885-021-08511-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 06/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Currently it is unclear how in situ breast cancer progresses to invasive disease; therefore, a better understanding of the events that occur during the transition to invasive carcinoma is warranted. Here we have conducted a detailed molecular and cellular characterization of two, patient-derived, ductal carcinoma in situ (DCIS) cell lines, ETCC-006 and ETCC-010. METHODS Human DCIS cell lines, ETCC-006 and ETCC-010, were compared against a panel of cell lines including the immortalized, breast epithelial cell line, MCF10A, breast cancer cell lines, MCF7 and MDA-MB-231, and another DCIS line, MCF10DCIS.com. Cell morphology, hormone and HER2/ERBB2 receptor status, cell proliferation, survival, migration, anchorage-independent growth, indicators of EMT, cell signalling pathways and cell cycle proteins were examined using immunostaining, immunoblots, and quantitative, reverse transcriptase PCR (qRT-PCR), along with clonogenic, wound-closure and soft agar assays. RNA sequencing (RNAseq) was used to provide a transcriptomic profile. RESULTS ETCC-006 and ETCC-010 cells displayed notable differences to another DCIS cell line, MCF10DCIS.com, in terms of morphology, steroid-receptor/HER status and markers of EMT. The ETCC cell lines lack ER/PR and HER, form colonies in clonogenic assays, have migratory capacity and are capable of anchorage-independent growth. Despite being isogenic, less than 30% of differentially expressed transcripts overlapped between the two lines, with enrichment in pathways involving receptor tyrosine kinases and DNA replication/cell cycle programs and in gene sets responsible for extracellular matrix organisation and ion transport. CONCLUSIONS For the first time, we provide a molecular and cellular characterization of two, patient-derived DCIS cell lines, ETCC-006 and ETCC-010, facilitating future investigations into the molecular basis of DCIS to invasive ductal carcinoma transition.
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Affiliation(s)
- Julia Samson
- School of Biochemistry and Cell Biology, Western Gateway Building, University College Cork, Cork, T12XF62 Ireland
- Present address: EFOR, 25-29 Rue Anatole France, 92300 Levallois-Perret, France
| | - Magdalina Derlipanska
- School of Biochemistry and Cell Biology, Western Gateway Building, University College Cork, Cork, T12XF62 Ireland
| | - Oza Zaheed
- School of Biochemistry and Cell Biology, Western Gateway Building, University College Cork, Cork, T12XF62 Ireland
| | - Kellie Dean
- School of Biochemistry and Cell Biology, Western Gateway Building, University College Cork, Cork, T12XF62 Ireland
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2
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Metibemu DS, Akinloye OA, Akamo AJ, Okoye JO, Ojo DA, Morifi E, Omotuyi IO. VEGFR-2 kinase domain inhibition as a scaffold for anti-angiogenesis: Validation of the anti-angiogenic effects of carotenoids from Spondias mombin in DMBA model of breast carcinoma in Wistar rats. Toxicol Rep 2021; 8:489-498. [PMID: 34408968 PMCID: PMC8363596 DOI: 10.1016/j.toxrep.2021.02.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 02/18/2021] [Accepted: 02/20/2021] [Indexed: 01/22/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) and its receptor-2 (VEGFR-2) mediated tumorigenesis, metastasis, and angiogenesis are the cause of the increased levels of mortality associated with breast cancer and other forms of cancer. Inhibition of VEGF and VEGFR-2 provides a great therapeutic option in the management of cancer. This study employed VEGFR-2 kinase domain inhibition as an anti-angiogenic scaffold and further validate the anti-angiogenic effects of the lead phytochemicals, carotenoids from Spondias mombin in 7, 12-Dimethylbenz[a]anthracene (DMBA) model of breast carcinoma in Wistar rats. Phytochemicals characterized from 6 reported anti-cancer plants were screened against the VEGFR-2 kinase domain. The lead phytochemicals, carotenoids from Spondias mombin were isolated and subjected to Liquid Chromatography-Electrospray Ionization-Mass Spectrometry (LC-ESI-MS) for characterization. The anti-angiogenic potentials of the carotenoid isolates were validated in the DMBA model of breast carcinoma in female Wistar rats through assessment of the expression of anti-angiogenic related mRNAs, histopathological analysis, and molecular docking. Treatment with carotenoid isolates (100 mg/kg and 200 mg/kg) significantly (p < 0.05) downregulated the expression of VEGF, VEGFR, Epidermal Growth Factor Receptor (EGFR), Hypoxia-Inducible Factor-1(HIF-1), and Matrix Metalloproteinase-2 (MMP-2) mRNAs in the mammary tumours, while the expression of Chromodomain Helicase DNA-Binding Protein-1 (CHD-1) mRNA was significantly (p < 0.05) upregulated. DMBA induced comedo and invasive ductal subtypes of breast carcinoma. The binding of astaxanthin, 7,7',8,8'-tetrahydro-β,β-carotene, and beta-carotene-15,15'-epoxide to the ATP binding site led to the DFG-out conformation with binding energies of -8.2 kcal/mol, -10.3 kcal/mol, and -10.5 kcal/mol respectively. Carotenoid isolates demonstrated anti-angiogenic and anti-proliferating potentials via VEGFR-2 kinase domain inhibition.
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Affiliation(s)
- Damilohun Samuel Metibemu
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | | | - Adio Jamiu Akamo
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - Jude Ogechukwu Okoye
- Department of Medical Laboratory Science, Faculty of Health Sciences and Technology, College of Medicine, Nnamdi Azikiwe University, Nnewi Campus, Nigeria
| | - David Ajiboye Ojo
- Department of Microbiology, Federal University of Agriculture, Abeokuta, Nigeria
| | - Eric Morifi
- Department of Chemistry, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa
| | - Idowu Olaposi Omotuyi
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
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3
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Parigoris E, Lee S, Mertz D, Turner M, Liu AY, Sentosa J, Djomehri S, Chang HC, Luker K, Luker G, Kleer CG, Takayama S. Cancer Cell Invasion of Mammary Organoids with Basal-In Phenotype. Adv Healthc Mater 2021; 10:e2000810. [PMID: 32583612 PMCID: PMC7759600 DOI: 10.1002/adhm.202000810] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Indexed: 01/08/2023]
Abstract
This paper describes mammary organoids with a basal-in phenotype where the basement membrane is located on the interior surface of the organoid. A key materials consideration to induce this basal-in phenotype is the use of a minimal gel scaffold that the epithelial cells self-assemble around and encapsulate. When MDA-MB-231 breast cancer cells are co-cultured with epithelial cells from day 0 under these conditions, cells self-organize into patterns with distinct cancer cell populations both inside and at the periphery of the epithelial organoid. In another type of experiment, the robust formation of the basement membrane on the epithelial organoid interior enables convenient studies of MDA-MB-231 invasion in a tumor progression-relevant direction relative to epithelial cell-basement membrane positioning. That is, the study of cancer invasion through the epithelium first, followed by the basement membrane to the basal side, is realized in an experimentally convenient manner where the cancer cells are simply seeded on the outside of preformed organoids, and their invasion into the organoid is monitored. Interestingly, invasion is more prominent when tumor cells are added to day 7 organoids with less developed basement membranes compared to day 16 organoids with more defined ones.
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Affiliation(s)
- Eric Parigoris
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Soojung Lee
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - David Mertz
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Madeleine Turner
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Amy Y Liu
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Jason Sentosa
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Sabra Djomehri
- Department of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Hao Chen Chang
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
| | - Kathryn Luker
- Departments of Radiology and Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, MI, 48109, USA
| | - Gary Luker
- Departments of Radiology and Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, MI, 48109, USA
| | - Celina G Kleer
- Department of Pathology and Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Shuichi Takayama
- Wallace H. Coulter Department of Biomedical Engineering and The Parker H. Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
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Vidavsky N, Kunitake JAMR, Diaz-Rubio ME, Chiou AE, Loh HC, Zhang S, Masic A, Fischbach C, Estroff LA. Mapping and Profiling Lipid Distribution in a 3D Model of Breast Cancer Progression. ACS CENTRAL SCIENCE 2019; 5:768-780. [PMID: 31139713 PMCID: PMC6535773 DOI: 10.1021/acscentsci.8b00932] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Indexed: 05/28/2023]
Abstract
Aberrant lipid accumulation and marked changes in cellular lipid profiles are related to breast cancer metabolism and disease progression. In vitro, these phenomena are primarily studied using cells cultured in monolayers (2D). Here, we employ multicellular spheroids, generated using the MCF10A cell line series of increasing malignancy potential, to better recapitulate the 3D microenvironmental conditions that cells experience in vivo. Breast cancer cell lipid compositions were assessed in 2D and 3D culture models as a function of malignancy using liquid chromatography coupled with mass spectrometry. Further, the spatial distribution of lipids was examined using Raman chemical imaging and lipid staining. We show that with changes in the cellular microenvironment when moving from 2D to 3D cell cultures, total lipid amounts decrease significantly, while the ratio of acylglycerols to membrane lipids increases. This ratio increase could be associated with the formation of large lipid droplets (>10 μm) that are spatially evident throughout the spheroids but absent in 2D cultures. Additionally, we found a significant difference in lipid profiles between the more and less malignant spheroids, including changes that support de novo sphingolipid production and a reduction in ether-linked lipid fractions in the invasive spheroids. These differences in lipid profiles as a function of cell malignancy and microenvironment highlight the importance of coupled spatial and lipidomic studies to better understand the connections between lipid metabolism and cancer.
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Affiliation(s)
- Netta Vidavsky
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850, United States
| | - Jennie A M R Kunitake
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850, United States
| | - Maria Elena Diaz-Rubio
- Metabolomics Facility, Institute of Biotechnology, Cornell University, Ithaca, New York 14850, United States
| | - Aaron E Chiou
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14850, United States
| | - Hyun-Chae Loh
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Sheng Zhang
- Metabolomics Facility, Institute of Biotechnology, Cornell University, Ithaca, New York 14850, United States
| | - Admir Masic
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14850, United States
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14850, United States
| | - Lara A Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850, United States
- Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14850, United States
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N-Acetylglucosaminyltransferase III (GnT-III) but not N-Acetylgalactosaminyltransferase-6 and 8 are Differentially Expressed in Invasive and In Situ Ductal Carcinoma of the Breast. Pathol Oncol Res 2019; 25:759-768. [PMID: 30689164 DOI: 10.1007/s12253-019-00593-5] [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: 05/29/2018] [Accepted: 01/15/2019] [Indexed: 10/27/2022]
Abstract
Mammary carcinoma is the most common malignant tumor in women, and it is the leading cause of mortality. In tumor context, glycosylation promotes post translational modifications necessary for cell progression, emerging as a relevant tumor hallmarker. This study aimed to analyze the association between polypeptide N-acetylgalactosaminyltransferase-6 (ppGalNAc-T6), -T8, N-acetylglucosaminyltransferase III (GnT-III) expression, Phaseolus vulgaris-leucoagglutinin (PHA-L), wheat germ agglutinin (WGA) and peanut agglutinin (PNA) staining with clinic-histopathological factors from patients with pure ductal carcinoma in situ (DCIS) and DCIS with invasive ductal carcinoma (DCIS-IDC) of breast. Formalin-fixed and paraffin-embedded samples (n = 109) were analyzed. In pure DCIS samples GnT-III was over-expressed in comedo lesions (p = 0.007). In DCIS-IDC, GnT-III expression was associated with high nuclear grade tumors (p = 0.039) while the presence of PHA-L and WGA were inversely related to HER-2 expression (p = 0.001; p = 0.036, respectively). These findings pointed to possible involvement of GnT-III, ppGalNAc-T8, L-PHA and WGA as probes in prognostic evaluation of DCIS.
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Zubeldia-Plazaola A, Recalde-Percaz L, Moragas N, Alcaraz M, Chen X, Mancino M, Fernández-Nogueira P, Prats de Puig M, Guzman F, Noguera-Castells A, López-Plana A, Enreig E, Carbó N, Almendro V, Gascón P, Bragado P, Fuster G. Glucocorticoids promote transition of ductal carcinoma in situ to invasive ductal carcinoma by inducing myoepithelial cell apoptosis. Breast Cancer Res 2018; 20:65. [PMID: 29973218 PMCID: PMC6032539 DOI: 10.1186/s13058-018-0977-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 05/06/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The microenvironment and stress factors like glucocorticoids have a strong influence on breast cancer progression but their role in the first stages of breast cancer and, particularly, in myoepithelial cell regulation remains unclear. Consequently, we investigated the role of glucocorticoids in ductal carcinoma in situ (DCIS) in breast cancer, focusing specially on myoepithelial cells. METHODS To clarify the role of glucocorticoids at breast cancer onset, we evaluated the effects of cortisol and corticosterone on epithelial and myoepithelial cells using 2D and 3D in vitro and in vivo approaches and human samples. RESULTS Glucocorticoids induce a reduction in laminin levels and favour the disruption of the basement membrane by promotion of myoepithelial cell apoptosis in vitro. In an in vivo stress murine model, increased corticosterone levels fostered the transition from DCIS to invasive ductal carcinoma (IDC) via myoepithelial cell apoptosis and disappearance of the basement membrane. RU486 is able to partially block the effects of cortisol in vitro and in vivo. We found that myoepithelial cell apoptosis is more frequent in patients with DCIS+IDC than in patients with DCIS. CONCLUSIONS Our findings show that physiological stress, through increased glucocorticoid blood levels, promotes the transition from DCIS to IDC, particularly by inducing myoepithelial cell apoptosis. Since this would be a prerequisite for invasive features in patients with DCIS breast cancer, its clinical management could help to prevent breast cancer progression to IDC.
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Affiliation(s)
- Arantzazu Zubeldia-Plazaola
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Leire Recalde-Percaz
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Núria Moragas
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Mireia Alcaraz
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Xieng Chen
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Mario Mancino
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Patricia Fernández-Nogueira
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Miquel Prats de Puig
- Department of Medicine, University of Barcelona, Barcelona, Spain.,Department of Senology, Clínica Planas, Barcelona, Spain
| | - Flavia Guzman
- Histopathology-Citology, Anatomical Pathology Service, Centro Médico Teknon, Barcelona, Spain
| | - Aleix Noguera-Castells
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Anna López-Plana
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Estel Enreig
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Neus Carbó
- Department of Biochemistry and molecular Biomedicine, University of Barcelona, Barcelona, Spain
| | - Vanessa Almendro
- Division of Medical Oncology, Department of Medicine, Harvard Medical School, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, USA
| | - Pedro Gascón
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Department of Medicine, University of Barcelona, Barcelona, Spain.,Department of Medical Oncology, Hospital Clínic, Barcelona, Spain
| | - Paloma Bragado
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. .,Department of Medicine, University of Barcelona, Barcelona, Spain.
| | - Gemma Fuster
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. .,Department of Medicine, University of Barcelona, Barcelona, Spain.
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Lo PK, Wolfson B, Zhou Q. Cancer stem cells and early stage basal-like breast cancer. World J Obstet Gynecol 2016; 5:150-161. [PMID: 28239564 PMCID: PMC5321620 DOI: 10.5317/wjog.v5.i2.150] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 10/21/2015] [Accepted: 01/22/2016] [Indexed: 02/05/2023] Open
Abstract
Ductal carcinoma in situ (DCIS) is a category of early stage, non-invasive breast tumor defined by the intraductal proliferation of malignant breast epithelial cells. DCIS is a heterogeneous disease composed of multiple molecular subtypes including luminal, HER2 and basal-like types, which are characterized by immunohistochemical analyses and gene expression profiling. Following surgical and radiation therapies, patients with luminal-type, estrogen receptor-positive DCIS breast tumors can benefit from adjuvant endocrine-based treatment. However, there are no available targeted therapies for patients with basal-like DCIS (BL-DCIS) tumors due to their frequent lack of endocrine receptors and HER2 amplification, rendering them potentially susceptible to recurrence. Moreover, multiple lines of evidence suggest that DCIS is a non-obligate precursor of invasive breast carcinoma. This raises the possibility that targeting precursor BL-DCIS is a promising strategy to prevent BL-DCIS patients from the development of invasive basal-like breast cancer. An accumulating body of evidence demonstrates the existence of cancer stem-like cells (CSCs) in BL-DCIS, which potentially determine the features of BL-DCIS and their ability to progress into invasive cancer. This review encompasses the current knowledge in regard to the characteristics of BL-DCIS, identification of CSCs, and their biological properties in BL-DCIS. We summarize recently discovered relevant molecular signaling alterations that promote the generation of CSCs in BL-DCIS and the progression of BL-DCIS to invasive breast cancer, as well as the influence of the tissue microenvironment on CSCs and the invasive transition. Finally, we discuss the translational implications of these findings for the prognosis and prevention of BL-DCIS relapse and progression.
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8
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Haynes B, Zhang Y, Liu F, Li J, Petit S, Kothayer H, Bao X, Westwell AD, Mao G, Shekhar MPV. Gold nanoparticle conjugated Rad6 inhibitor induces cell death in triple negative breast cancer cells by inducing mitochondrial dysfunction and PARP-1 hyperactivation: Synthesis and characterization. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2016; 12:745-757. [PMID: 26563438 PMCID: PMC4809765 DOI: 10.1016/j.nano.2015.10.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/06/2015] [Accepted: 10/10/2015] [Indexed: 12/17/2022]
Abstract
We recently developed a small molecule inhibitor SMI#9 for Rad6, a protein overexpressed in aggressive breast cancers and involved in DNA damage tolerance. SMI#9 induces cytotoxicity in cancerous cells but spares normal breast cells; however, its therapeutic efficacy is limited by poor solubility. Here we chemically modified SMI#9 to enable its conjugation and hydrolysis from gold nanoparticle (GNP). SMI#9-GNP and parent SMI#9 activities were compared in mesenchymal and basal triple negative breast cancer (TNBC) subtype cells. Whereas SMI#9 is cytotoxic to all TNBC cells, SMI#9-GNP is endocytosed and cytotoxic only in mesenchymal TNBC cells. SMI#9-GNP endocytosis in basal TNBCs is compromised by aggregation. However, when combined with cisplatin, SMI#9-GNP is imported and synergistically increases cisplatin sensitivity. Like SMI#9, SMI#9-GNP spares normal breast cells. The released SMI#9 is active and induces cell death via mitochondrial dysfunction and PARP-1 stabilization/hyperactivation. This work signifies the development of a nanotechnology-based Rad6-targeting therapy for TNBCs. FROM THE CLINICAL EDITOR Protein Rad6 is overexpressed in breast cancer cells and its blockade may provide a new treatment against 3N breast cancer. The authors conjugated a small molecule inhibitor SMI#9 for Rad6 to gold nanoparticles in this study and showed that this new formulation specifically targeted chemo-resistant breast cancer cells and highlighted the importance of nanotechnology in drug carrier development.
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Affiliation(s)
- Brittany Haynes
- Karmanos Cancer Institute, Detroit, MI, USA; Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Yanhua Zhang
- Department of Chemical Engineering and Materials Science, Wayne State University College of Engineering, Detroit, MI, USA
| | - Fangchao Liu
- Department of Chemical Engineering and Materials Science, Wayne State University College of Engineering, Detroit, MI, USA
| | - Jing Li
- Karmanos Cancer Institute, Detroit, MI, USA; Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Sarah Petit
- Karmanos Cancer Institute, Detroit, MI, USA; Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
| | - Hend Kothayer
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, UK; Faculty of Pharmacy, Zagazig University, Egypt
| | - Xun Bao
- Karmanos Cancer Institute, Detroit, MI, USA
| | - Andrew D Westwell
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, UK
| | - Guangzhao Mao
- Department of Chemical Engineering and Materials Science, Wayne State University College of Engineering, Detroit, MI, USA.
| | - Malathy P V Shekhar
- Karmanos Cancer Institute, Detroit, MI, USA; Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA; Department of Pathology, Wayne State University School of Medicine, Detroit, MI, USA.
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9
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Russell TD, Jindal S, Agunbiade S, Gao D, Troxell M, Borges VF, Schedin P. Myoepithelial cell differentiation markers in ductal carcinoma in situ progression. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:3076-89. [PMID: 26343330 PMCID: PMC4630168 DOI: 10.1016/j.ajpath.2015.07.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 07/14/2015] [Accepted: 07/21/2015] [Indexed: 11/20/2022]
Abstract
We describe a preclinical model that investigates progression of early-stage ductal carcinoma in situ (DCIS) and report that compromised myoepithelial cell differentiation occurs before transition to invasive disease. Human breast cancer MCF10DCIS.com cells were delivered into the mouse mammary teat by intraductal injection in the absence of surgical manipulations and accompanying wound-healing confounders. DCIS-like lesions developed throughout the mammary ducts with full representation of human DCIS histologic patterns. Tumor cells were incorporated into the normal mammary epithelium, developed ductal intraepithelial neoplasia and DCIS, and progressed to invasive carcinoma, suggesting the model provides a rigorous approach to study early stages of breast cancer progression. Mammary glands were evaluated for myoepithelium integrity with immunohistochemical assays. Progressive loss of the myoepithelial cell differentiation markers p63, calponin, and α-smooth muscle actin was observed in the mouse myoepithelium surrounding DCIS-involved ducts. p63 loss was an early indicator, calponin loss intermediate, and α-smooth muscle actin a later indicator of compromised myoepithelium. Loss of myoepithelial calponin was specifically associated with gain of the basal marker p63 in adjacent tumor cells. In single time point biopsies obtained from 16 women diagnosed with pure DCIS, a similar loss in myoepithelial cell markers was observed. These results suggest that further research is warranted into the role of myoepithelial cell p63 and calponin expression on DCIS progression to invasive disease.
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Affiliation(s)
- Tanya D Russell
- Division of Medical Oncology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Sonali Jindal
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon
| | - Samiat Agunbiade
- Division of Medical Oncology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Dexiang Gao
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Megan Troxell
- Department of Pathology, Oregon Health & Science University, Portland, Oregon; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon
| | - Virginia F Borges
- Division of Medical Oncology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado; University of Colorado Cancer Center, Aurora, Colorado
| | - Pepper Schedin
- Division of Medical Oncology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, Oregon; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon.
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Shekhar MPV, Kato I, Nangia-Makker P, Tait L. Comedo-DCIS is a precursor lesion for basal-like breast carcinoma: identification of a novel p63/Her2/neu expressing subgroup. Oncotarget 2014; 4:231-41. [PMID: 23548208 PMCID: PMC3712569 DOI: 10.18632/oncotarget.818] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Basal breast cancer comprises ~15% of invasive ductal breast cancers, and presents as high-grade lesions with aggressive clinical behavior. Basal breast carcinomas express p63 and cytokeratin 5 (CK5) antigens characteristic of the myoepithelial lineage, and typically lack Her2/neu and hormone receptor expression. However, there is limited data about the precursor lesions from which they emerge. Here we wished to determine whether comedo-ductal carcinoma in situ (comedo- DCIS), a high-risk in situ breast lesion, serve as precursors for basal-like breast cancer. To determine this link, p63, CK5, Her2/neu, epidermal growth factor receptor (EGFR), estrogen receptor (ER) and progesterone receptor (PgR) expression were analyzed by immunohistochemistry in 17 clinical comedo- and 12 noncomedo-DCIS cases, and in tumors derived from unfractionated and CK5-overexpressing subpopulation (MCF10DCIS.com-CK5(high)) of MCF10DCIS.com cells, a model representative of clinical comedo-DCIS. p63 and Her2/neu coexpression was analyzed by immunofluorescence double labeling. A novel p63/CK5/Her2/neu expressing subpopulation of cells that are ER-/PgR-/EGFR- were identified in the myoepithelial and luminal areas of clinical comedo-DCIS and tumors derived from unfractionated MCF10DCIS.com and MCF10DCIS.com-CK5(high) cells. These data suggest that p63 and Her2/neu expressors may share a common precursor intermediate. P63, but not Her2/neu, expression was significantly associated (P = 0.038) with microinvasion/recurrence of clinical comedo-DCIS, and simultaneous expression of p63 and Her2/neu was marginally associated (P = 0.067) with comedo-DCIS. These data suggest that p63/Her2/neu expressing precursor intermediate in comedo-DCIS may provide a cellular basis for emergence of p63+/Her2/neu- or p63+/Her2/neu+ basal-like breast cancer, and that p63/Her2/neu coexpression may serve as biomarkers for identification of this subgroup of basal-like breast cancers.
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Khurana A, Jung-Beom D, He X, Kim SH, Busby RC, Lorenzon L, Villa M, Baldi A, Molina J, Goetz MP, Shridhar V. Matrix detachment and proteasomal inhibitors diminish Sulf-2 expression in breast cancer cell lines and mouse xenografts. Clin Exp Metastasis 2013; 30:407-15. [PMID: 23412907 DOI: 10.1007/s10585-012-9546-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 10/25/2012] [Indexed: 01/17/2023]
Abstract
Sulfatase 2 (Sulf-2) has been previously shown to be upregulated in breast cancer. Sulf-2 removes sulfate moieties on heparan sulfate proteoglycans which in turn modulate heparin binding growth factor signaling. Here we report that matrix detachment resulted in decreased Sulf-2 expression in breast cancer cells and increased cleavage of poly ADP-ribose polymerase. Silencing of Sulf-2 promotes matrix detachment induced cell death in MCF10DCIS cells. In an attempt to identify Sulf-2 specific inhibitor, we found that proteasomal inhibitors such as MG132, Lactacystin and Bortezomib treatment abolished Sulf-2 expression in multiple breast cancer cell lines. Additionally, we show that Bortezomib treatment of MCF10DCIS cell xenografts in mouse mammary fat pads significantly reduced tumor size, caused massive apoptosis and more importantly reduced Sulf-2 levels in vivo. Finally, our immunohistochemistry analysis of Sulf-2 expression in cohort of patient derived breast tumors indicates that Sulf-2 is significantly upregulated in autologous metastatic lesions compared to primary tumors (p < 0.037, Pearson correlation, Chi-Square analysis). In all, our data suggest that Sulf-2 might play an important role in breast cancer progression from ductal carcinoma in situ into an invasive ductal carcinoma potentially by resisting cell death.
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Affiliation(s)
- Ashwani Khurana
- Department of Experimental Pathology, Mayo Clinic College of Medicine, 200 First Street, S.W., 2-46 Stabile, Rochester, MN 55905, USA
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12
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Nangia-Makker P, Raz T, Tait L, Shekhar MPV, Li H, Balan V, Makker H, Fridman R, Maddipati K, Raz A. Ocimum gratissimum retards breast cancer growth and progression and is a natural inhibitor of matrix metalloproteases. Cancer Biol Ther 2013; 14:417-27. [PMID: 23380593 DOI: 10.4161/cbt.23762] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Ocimum genus (a.k.a holy basil or tulsi) is a dietary herb used for its multiple beneficial pharmacologic properties including anti-cancer activity. Here we show that crude extract of Ocimum gratissimum (OG) and its hydrophobic and hydrophilic fractions (HB and HL) differentially inhibit breast cancer cell chemotaxis and chemoinvasion in vitro and retard tumor growth and temporal progression of MCF10ADCIS.com xenografts, a model of human breast comedo-ductal carcinoma in situ (comedo-DCIS). OG-induced inhibition of tumor growth was associated with decreases in basement membrane disintegration, angiogenesis and MMP-2 and MMP-9 activities as confirmed by in situ gelatin zymography and cleavage of galectin-3. There was also decrease in MMP-2 and MMP-9 activities in the conditioned media of OG-treated MCF10AT1 and MCF10AT1-EIII8 premalignant human breast cancer cells as compared with control. The MMP-2 and MMP-9 inhibitory activities of OG were verified in vitro using gelatin, a synthetic fluorogenic peptide and recombinant galectin-3 as MMP substrates. Mice fed on OG-supplemented drinking water showed no adverse effects compared with control. These data suggest that OG is non-toxic and that the anti-cancer therapeutic activity of OG may in part be contributed by its MMP inhibitory activity.
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Affiliation(s)
- Pratima Nangia-Makker
- Department of Oncology, School of Medicine, Wayne State University, Detroit, MI, USA.
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Phenotypic and Molecular Characterization of MCF10DCIS and SUM Breast Cancer Cell Lines. Int J Breast Cancer 2013; 2013:872743. [PMID: 23401782 PMCID: PMC3562669 DOI: 10.1155/2013/872743] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 10/31/2012] [Accepted: 11/08/2012] [Indexed: 12/20/2022] Open
Abstract
We reviewed the phenotypic and molecular characteristics of MCF10DCIS.com and the SUM cell lines based on numerous studies performed over the years. The major signaling pathways that give rise to the phenotype of these cells may serve as a good resource of information when researchers in drug discovery and development use these cells to identify novel targets and biomarkers. Major signaling pathways and mutations affecting the coding sequence are also described providing important information when using these cells as a model in a variety of studies.
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Longitudinal study of mammary epithelial and fibroblast co-cultures using optical coherence tomography reveals morphological hallmarks of pre-malignancy. PLoS One 2012; 7:e49148. [PMID: 23152864 PMCID: PMC3495770 DOI: 10.1371/journal.pone.0049148] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 10/09/2012] [Indexed: 11/19/2022] Open
Abstract
The human mammary gland is a complex and heterogeneous organ, where the interactions between mammary epithelial cells (MEC) and stromal fibroblasts are known to regulate normal biology and tumorigenesis. We aimed to longitudinally evaluate morphology and size of organoids in 3D co-cultures of normal (MCF10A) or pre-malignant (MCF10DCIS.com) MEC and hTERT-immortalized fibroblasts from reduction mammoplasty (RMF). This co-culture model, based on an isogenic panel of cell lines, can yield insights to understand breast cancer progression. However, 3D cultures pose challenges for quantitative assessment and imaging, especially when the goal is to measure the same organoid structures over time. Using optical coherence tomography (OCT) as a non-invasive method to longitudinally quantify morphological changes, we found that OCT provides excellent visualization of MEC-fibroblast co-cultures as they form ductal acini and remodel over time. Different concentrations of fibroblasts and MEC reflecting reported physiological ratios [1] were evaluated, and we found that larger, hollower, and more aspherical acini were formed only by pre-malignant MEC (MCF10DCIS.com) in the presence of fibroblasts, whereas in comparable conditions, normal MEC (MCF10A) acini remained smaller and less aspherical. The ratio of fibroblast to MEC was also influential in determining organoid phenotypes, with higher concentrations of fibroblasts producing more aspherical structures in MCF10DCIS.com. These findings suggest that stromal-epithelial interactions between fibroblasts and MEC can be modeled in vitro, with OCT imaging as a convenient means of assaying time dependent changes, with the potential for yielding important biological insights about the differences between benign and pre-malignant cells.
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15
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Identification of PADI2 as a potential breast cancer biomarker and therapeutic target. BMC Cancer 2012; 12:500. [PMID: 23110523 PMCID: PMC3571905 DOI: 10.1186/1471-2407-12-500] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 10/27/2012] [Indexed: 12/25/2022] Open
Abstract
Background We have recently reported that the expression of peptidylarginine deiminase 2 (PADI2) is regulated by EGF in mammary cancer cells and appears to play a role in the proliferation of normal mammary epithelium; however, the role of PADI2 in the pathogenesis of human breast cancer has yet to be investigated. Thus, the goals of this study were to examine whether PADI2 plays a role in mammary tumor progression, and whether the inhibition of PADI activity has anti-tumor effects. Methods RNA-seq data from a collection of 57 breast cancer cell lines was queried for PADI2 levels, and correlations with known subtype and HER2/ERBB2 status were evaluated. To examine PADI2 expression levels during breast cancer progression, the cell lines from the MCF10AT model were used. The efficacy of the PADI inhibitor, Cl-amidine, was tested in vitro using MCF10DCIS cells grown in 2D-monolayers and 3D-spheroids, and in vivo using MCF10DCIS tumor xenografts. Treated MCF10DCIS cells were examined by flow-cytometry to determine the extent of apoptosis and by RT2 Profiler PCR Cell Cycle Array to detect alterations in cell cycle associated genes. Results We show by RNA-seq that PADI2 mRNA expression is highly correlated with HER2/ERBB2 (p = 2.2 × 106) in luminal breast cancer cell lines. Using the MCF10AT model of breast cancer progression, we then demonstrate that PADI2 expression increases during the transition of normal mammary epithelium to fully malignant breast carcinomas, with a strong peak of PADI2 expression and activity being observed in the MCF10DCIS cell line, which models human comedo-DCIS lesions. Next, we show that a PADI inhibitor, Cl-amidine, strongly suppresses the growth of MCF10DCIS monolayers and tumor spheroids in culture. We then carried out preclinical studies in nude (nu/nu) mice and found that Cl-amidine also suppressed the growth of xenografted MCF10DCIS tumors by more than 3-fold. Lastly, we performed cell cycle array analysis of Cl-amidine treated and control MCF10DCIS cells, and found that the PADI inhibitor strongly affects the expression of several cell cycle genes implicated in tumor progression, including p21, GADD45α, and Ki67. Conclusion Together, these results suggest that PADI2 may function as an important new biomarker for HER2/ERBB2+ tumors and that Cl-amidine represents a new candidate for breast cancer therapy.
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Haagenson KK, Tait L, Wang J, Shekhar MP, Polin L, Chen W, Wu GS. Cullin-3 protein expression levels correlate with breast cancer progression. Cancer Biol Ther 2012; 13:1042-6. [PMID: 22825334 DOI: 10.4161/cbt.21046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Cullin-3 is a component of the Cullin-Ring ubiquitin ligase (CRL) family that plays an important role in mediating protein degradation. Deregulation of Cullin-3 expression has been observed in human cancers; however, a role for Cullin-3 in tumor progression has not been previously recognized. Using the MCF10DCIS.com human breast cancer xenograft model, we show that Cullin-3 is increasingly expressed during progression from comedo ductal carcinoma in situ (DCIS) to invasive carcinomas. Cullin-3 protein is not detected in early lesions but is noticeably increased in DCIS tumors and significantly overexpressed in invasive cancers. In experimental metastasis assays, high expression of Cullin-3 was observed in the lung site. Importantly, Cullin-3 staining is detected in human breast cancer tissues, not in normal breast tissues and its expression level positively correlates with tumor stage. These data suggest that Cullin-3 may play an important role in tumor progression from DCIS to invasive cancer and may serve as a biomarker for the diagnosis of aggressive breast cancer.
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Abstract
Singleminded-2s (SIM2s) is a member of the bHLH/PAS family of transcription factors and a key regulator of mammary epithelial cell differentiation. SIM2s is highly expressed in mammary epithelial cells and down regulated in human breast cancer. Loss of Sim2s causes aberrant mouse mammary ductal development with features suggestive of malignant transformation, whereas over-expression of SIM2s promotes precocious alveolar differentiation in nulliparous mouse mammary glands, suggesting that SIM2s is required for establishing and enhancing mammary gland differentiation. To test the hypothesis that SIM2s regulates tumor cell differentiation, we analyzed SIM2s expression in human primary breast ductal carcinoma in situ (DCIS) samples and found that SIM2s is lost with progression from DCIS to invasive ductal cancer (IDC). Utilizing a MCF10DCIS.COM progression model, we have shown that SIM2s expression is decreased in MCF10DCIS.COM cells compared to MCF10A cells and reestablishment of SIM2s in MCF10DCIS.COM cells significantly inhibits growth and invasion in vitro and in vivo. Analysis of SIM2s-MCF10DCIS.com tumors showed that SIM2s promoted a more differentiated tumor phenotype including the expression of a broad range of luminal markers (CSN2 (β-casein), CDH1 (E-cadherin), and KER18 (keratin-18)) and suppressed genes associated with stem cell maintenance and a basal phenotype (SMO (smoothened), p63, SLUG (snail-2), KER14 (keratin-14) and VIM (vimentin)). Furthermore, loss of SIM2s expression in MCF10DCIS.COM xenografts resulted in a more invasive phenotype and increased lung metastasis likely due to an increase in hedgehog signaling and matrix metalloproteinase expression. Together, these exciting new data support a role for SIM2s in promoting human breast tumor differentiation and maintaining epithelial integrity.
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Khurana A, McKean H, Kim H, Kim SH, mcguire J, Roberts LR, Goetz MP, Shridhar V. Silencing of HSulf-2 expression in MCF10DCIS.com cells attenuate ductal carcinoma in situ progression to invasive ductal carcinoma in vivo. Breast Cancer Res 2012; 14:R43. [PMID: 22410125 PMCID: PMC3446377 DOI: 10.1186/bcr3140] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 02/17/2012] [Accepted: 03/12/2012] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Ductal carcinoma in situ (DCIS) of the breast is a heterogeneous group of proliferative cellular lesions that have the potential to become invasive. Very little is known about the molecular alterations involved in the progression from DCIS to invasive ductal carcinoma (IDC). Heparan endosulfatase (HSulf-2) edits sulfate moieties on heparan sulfate proteoglycans (HSPGs) and has been implicated in modulating heparin binding growth factor signaling, angiogenesis and tumorigenesis. However, the role of HSulf-2 in breast cancer progression is poorly understood. MCF10DCIS.com cells (referred as MCF10DCIS) express HSulf-2 and form comedo type DCIS and progress to IDC when transplanted in immune-deficient mice and, therefore, is an ideal model to study breast cancer progression. We evaluated the role of HSulf-2 in progression from DCIS to IDC using mouse fat pad mammary xenografts. METHODS Non-target control (NTC) and HSulf-2 knockdown in MCF10DCIS breast cancer cells were achieved by NTC shRNA and two different lentiviral shRNA against HSulf-2 respectively. Xenografts were established by injecting NTC and HSulf-2 deficient MCF10DCIS cells in mouse mammary fat pads. Xenografts were subjected to H&E staining for morphological analysis, TUNEL and Propidium iodide staining (to determine the extent of apoptosis), Western blot analysis and zymography. RESULTS Using a mouse mammary fat pad derived xenograft model, we observed that compared to control treated xenografts, down-regulation of HSulf-2 was associated with significant delays in growth at Week 7 (P-value < 0.05). Histological examination of the tumors demonstrated substantial differences in comedo necrosis, with marked luminal apoptosis and up-regulation of apoptotic markers Bim, cleaved PARP and cleaved caspase 3 in HSulf-2 depleted xenografts. Furthermore, HSulf-2 depleted xenografts retained the basement membrane integrity with decreased activity and expression of matrix metalloproteinase 9 (MMP-9), an enzyme critical for degradation of extracellular matrix compared to nontargeted control. CONCLUSION Our data suggest that HSulf-2 expression may be critical for human breast cancer progression. Down-regulation of HSulf-2 leads to retention of comedo type DCIS and delays the progression of DCIS to IDC. Further studies are necessary to determine if therapeutic targeting of HSulf-2 expression might delay the progression of DCIS to IDC.
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Affiliation(s)
- Ashwani Khurana
- Department of Experimental Pathology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
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Zikan M, Bohm J, Pavlista D, Cibula D. Comparative analysis of loss of heterozygosity and expression profile in normal tissue, DCIS and invasive breast cancer. Clin Transl Oncol 2011; 13:652-5. [PMID: 21865136 DOI: 10.1007/s12094-011-0710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
INTRODUCTION Ductal carcinoma in situ (DCIS) is considered to be related to the development of invasive breast cancer. The aim of molecular biological research of preinvasive breast lesion characteristics and comparison with normal tissues and tissue of invasive tumours is to identify patients at high risk of developing invasive tumour on the basis of already established preinvasive lesions, and thus influence clinical decision-making. The aim of our study was to analyse several key molecules involved in different cellular pathways important for cancer development and progression in different types of breast tissue and to describe similarities and differences between premalignant and malignant lesions. MATERIAL AND METHODS Genetic material isolated from both the tumour and healthy tissue was examined by loss of heterozygosity (LOH) analysis and real-time PCR using collagen 2A as a house-keeping gene. RESULTS We analysed 65 samples of healthy mammary gland, 25 DCIS and 42 invasive ductal breast cancer samples. We analysed the LOH in three genes: BRCA1, BRCA2 and p53; and the gene expression of the VEGF gene and Bcl-2 gene. LOH in the BRCA1 gene was present in 44.74% of invasive samples and in 8.69% of DCIS (p=0.026); LOH in the BRCA2 gene in 45.0% of invasive samples and in 9.52% of DCIS (p=0.036); LOH in the p53 gene in 32.5% of invasive samples and in 31.82% of DCIS (p=0.97). No LOH was observed in normal tissue samples. VEGF was overexpressed in 14.3% of invasive cancers and in 12.0% of DCIS. Overexpression of Bcl-2 was observed in 11.9% of invasive cancers and in 8.0% of DCIS. CONCLUSION We have confirmed that some of the molecular characteristics of DCIS are identical to those of invasive carcinoma. This approach could lead to the identification of molecular markers as indicators for the potential development of DCIS into invasive carcinoma or identification of DCIS subgroups with latent invasion.
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Affiliation(s)
- Michal Zikan
- Oncogynecologic Center, Department of Obstetrics and Gynecology, Charles University in Prague, First Faculty of Medicine and General University Hospital, Apolinarska 18, Prague 2, Czech Republic.
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Gerard B, Tait L, Nangia-Makker P, Shekhar MP. Rad6B acts downstream of Wnt signaling to stabilize β-catenin: Implications for a novel Wnt/β-catenin target. J Mol Signal 2011; 6:6. [PMID: 21767405 PMCID: PMC3161051 DOI: 10.1186/1750-2187-6-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 07/18/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Aberrant Wnt/β-catenin signaling is associated with breast cancer even though genetic mutations in Wnt signaling components are rare. We have previously demonstrated that Rad6B, an ubiquitin conjugating enzyme, stabilizes β-catenin via polyubiqutin modifications that render β-catenin insensitive to proteasomal degradation. Rad6B is a transcriptional target of β-catenin, creating a positive feedback loop between Rad6B expression and β-catenin activation. METHODS To isolate subpopulations expressing high or low Rad6B levels, we transfected MDA-MB-231 or WS-15 human breast cancer cells with ZsGreen fluorescent reporter vector in which the expression of ZsGreen was placed under the control of Rad6B promoter. ZsGreenhigh and ZsGreenlow subpopulations, reflective of high and low Rad6B promoter activity, respectively, were isolated by FACS. To determine the relevance of Wnt signaling in Rad6B-mediated β-catenin stabilization/activation, the ZsGreenhigh cells were transfected with signaling-defective Wnt coreceptor LRP6Δ173. Rad6B expression and promoter activity were determined by RT-PCR, Western blot and Rad6B promoter-mediated luciferase assays. β-catenin levels and transcriptional activity were determined by Western blot and TOP/FOP Flash reporter assays. Tumor formation and morphologies of ZsGreenlow, ZsGreenhigh, and ZsGreenhigh/LRP6Δ173 cells compared to unsorted vector controls were evaluated in nude mice. Expression of Wnt signaling related genes was profiled using the Wnt signaling pathway RT2 Profiler PCR arrays. RESULTS ZsGreenhigh subpopulations showed high Rad6B expression and Rad6B promoter activity as compared to ZsGreenlow cells. ZsGreenhigh (high Rad6B expressors) also showed elevated β-catenin levels and TOP/Flash activity. Inhibiting Wnt signaling in the high Rad6B expressors decreased ZsGreen fluorescence, Rad6B gene expression, β-catenin levels and TOP/Flash activity. Tumors derived from high Rad6B expressors were predominantly composed of cells with epithelial mesenchymal transition (EMT) phenotype as compared to control tumors that were composed of both cuboidal and EMT-type cells. Tumors derived from low Rad6B expressors lacked EMT phenotype. Inhibition of LRP6 function in the high Rad6B expressors abrogated the EMT phenotype. Gene expression profiling showed upregulation of several Wnt signaling pathway regulators in high Rad6B expressors that were downregulated by interference of Wnt signaling with mutant LRP6 or by Rad6B silencing. CONCLUSIONS These data reveal a functional link between the canonical Wnt pathway and Rad6B in β-catenin activation and breast cancer progression.
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Affiliation(s)
- Brigitte Gerard
- Department of Oncology, Wayne State University, 110 East Warren Avenue, Detroit, 48201, Michigan.
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Nangia-Makker P, Wang Y, Raz T, Tait L, Balan V, Hogan V, Raz A. Cleavage of galectin-3 by matrix metalloproteases induces angiogenesis in breast cancer. Int J Cancer 2010; 127:2530-41. [PMID: 20162566 DOI: 10.1002/ijc.25254] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Galectin-3 cleavage is related to progression of human breast and prostate cancer and is partly responsible for tumor growth, angiogenesis and apoptosis resistance in mouse models. A functional polymorphism in galectin-3 gene, determining its susceptibility to cleavage by matrix metalloproteinases (MMPs)-2/-9 is related to racial disparity in breast cancer incidence in Asian and Caucasian women. The purpose of our study is to evaluate (i) if cleavage of galectin-3 could be related to angiogenesis during the progression of human breast cancer, (ii) the role of cleaved galectin-3 in induction of angiogenesis and (iii) determination of the galectin-3 domain responsible for induction of angiogenic response. Galectin-3 null breast cancer cells BT-459 were transfected with either cleavable full-length galectin-3 or its fragmented peptides. Chemotaxis, chemoinvasion, heterotypic aggregation, epithelial-endothelial cell interactions and angiogenesis were compared to noncleavable galectin-3. BT-549-H(64) cells harboring cleavable galectin-3 exhibited increased chemotaxis, invasion and interactions with endothelial cells resulting in angiogenesis and 3D morphogenesis compared to BT-549-P(64) cells harboring noncleavable galectin-3. BT-549-H(64) cells induced increased migration and phosphorylation of focal adhesion kinase in migrating endothelial cells. Endothelial cells cocultured with BT-549 cells transfected with galectin-3 peptides indicate that amino acids 1-62 and 33-250 stimulate migration and morphogenesis of endothelial cells. Immunohistochemical analysis of blood vessel density and galectin-3 cleavage in a breast cancer progression tissue array support the in vitro findings. We conclude that the cleavage of the N terminus of galectin-3 followed by its release in the tumor microenvironment in part leads to breast cancer angiogenesis and progression.
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Affiliation(s)
- Pratima Nangia-Makker
- Tumor Progression and Metastasis, Department of Pathology, School of Medicine, Wayne State University, Detroit, MI, USA
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Analysis of stromal signatures in the tumor microenvironment of ductal carcinoma in situ. Breast Cancer Res Treat 2009; 123:397-404. [PMID: 19949854 DOI: 10.1007/s10549-009-0654-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 11/14/2009] [Indexed: 12/16/2022]
Abstract
Recent advances in the study of the tumor microenvironment have revealed significant interaction between tumor cells and their surrounding stroma in model systems. We have previously shown that two distinct stromal signatures derived from a macrophage (CSF1) response and a fibroblastic (DTF-like) response are present in subsets of invasive breast cancers and show a correlation with clinical outcome. In the present study we explore whether these signatures also exist in the stroma of ductal carcinoma in situ (DCIS). We studied the signatures by both gene expression profile analysis of a publically available data set of DCIS and by immunohistochemistry (IHC) on a tissue microarray of DCIS and invasive breast cancer cases. Both the gene expression and immunohistochemical data show that the macrophage response and fibroblast expression signatures are present in the stroma of subsets of DCIS cases. The incidence of the stromal signatures in DCIS is similar to the incidence in invasive breast cancer that we have previously reported. We also find that the macrophage response signature is associated with higher grade DCIS and cases which are ER and PR negative, whereas the fibroblast signature was not associated with any clinicopathologic features in DCIS. A comparison of 115 matched cases of DCIS and invasive breast cancer found a correlation between the type of stromal response in DCIS and invasive ductal carcinoma (IDC) within the same patient for both the macrophage response and the fibroblast stromal signatures (P = 0.03 and 0.08, respectively). This study is a first characterization of these signatures in DCIS. These signatures have significant clinicopathologic associations and tend to be conserved as the tumor progresses from DCIS to invasive breast cancer.
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Ye CJ, Stevens JB, Liu G, Bremer SW, Jaiswal AS, Ye KJ, Lin MF, Lawrenson L, Lancaster WD, Kurkinen M, Liao JD, Gairola CG, Shekhar MP, Narayan S, Miller FR, Heng HH. Genome based cell population heterogeneity promotes tumorigenicity: the evolutionary mechanism of cancer. J Cell Physiol 2009; 219:288-300. [PMID: 19115235 PMCID: PMC2778062 DOI: 10.1002/jcp.21663] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cancer progression represents an evolutionary process where overall genome level changes reflect system instability and serve as a driving force for evolving new systems. To illustrate this principle it must be demonstrated that karyotypic heterogeneity (population diversity) directly contributes to tumorigenicity. Five well characterized in vitro tumor progression models representing various types of cancers were selected for such an analysis. The tumorigenicity of each model has been linked to different molecular pathways, and there is no common molecular mechanism shared among them. According to our hypothesis that genome level heterogeneity is a key to cancer evolution, we expect to reveal that the common link of tumorigenicity between these diverse models is elevated genome diversity. Spectral karyotyping (SKY) was used to compare the degree of karyotypic heterogeneity displayed in various sublines of these five models. The cell population diversity was determined by scoring type and frequencies of clonal and non-clonal chromosome aberrations (CCAs and NCCAs). The tumorigenicity of these models has been separately analyzed. As expected, the highest level of NCCAs was detected coupled with the strongest tumorigenicity among all models analyzed. The karyotypic heterogeneity of both benign hyperplastic lesions and premalignant dysplastic tissues were further analyzed to support this conclusion. This common link between elevated NCCAs and increased tumorigenicity suggests an evolutionary causative relationship between system instability, population diversity, and cancer evolution. This study reconciles the difference between evolutionary and molecular mechanisms of cancer and suggests that NCCAs can serve as a biomarker to monitor the probability of cancer progression.
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Affiliation(s)
- Christine J. Ye
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Joshua B. Stevens
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Guo Liu
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Steven W. Bremer
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Aruna S. Jaiswal
- Department of Anatomy and Cell Biology, UF Shands Cancer Center, University of Florida, Gainesville, Florida
| | | | - Ming-Fong Lin
- Eppley Institute for Cancer Research, University of Nebraska Medical Center, Omaha, Nebraska
| | - Lesley Lawrenson
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Wayne D. Lancaster
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Markku Kurkinen
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - Joshua D. Liao
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
| | - C. Gary Gairola
- Graduate Center for Toxicology, University of Kentucky, Lexington, Kentucky
| | | | - Satya Narayan
- Department of Anatomy and Cell Biology, UF Shands Cancer Center, University of Florida, Gainesville, Florida
| | | | - Henry H.Q. Heng
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan
- Karmanos Cancer Institute, Detroit, Michigan
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Holliday DL, Brouilette KT, Markert A, Gordon LA, Jones JL. Novel multicellular organotypic models of normal and malignant breast: tools for dissecting the role of the microenvironment in breast cancer progression. Breast Cancer Res 2009; 11:R3. [PMID: 19152687 PMCID: PMC2687706 DOI: 10.1186/bcr2218] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Revised: 11/21/2008] [Accepted: 01/19/2009] [Indexed: 12/02/2022] Open
Abstract
Introduction There is increasing recognition of the role of the microenvironment in the control of both normal and tumour cell behaviour. In the breast, myoepithelial cells and fibroblasts can influence tumour cell behaviour, with myoepithelial cells exhibiting a broad tumour-suppressor activity while fibroblasts frequently promote tumour growth and invasion. This study describes the development of physiologically relevant three-dimensional heterotypic culture systems containing mixed normal or tumour-derived breast populations and shows how such models can be used to dissect the interactions that influence cell behaviour. Methods Populations of luminal cells, myoepithelial cells and fibroblasts were isolated from normal and malignant breast tissue, characterised and compared with immortalised cell lines. Co-localisation of normal and malignant luminal cells with myoepithelial cells alone or with either normal or tumour-derived fibroblasts was studied. Cultures were grown for seven days, and then gels were fixed and whole gel immunofluorescence carried out to assess co-localisation and polarisation. The potential role of matrix metalloproteinases (MMP) or hepatocyte growth factor(HGF)-c-met signalling in disrupting cellular organisation was investigated by incorporating inhibitors into cultures either alone or in combination. Results Over a culture period of seven days, myoepithelial cells organised themselves around luminal cell populations forming dual-cell co-units. Characterisation of co-units showed established basal polarity and differentiation analogous to their in vivo counterparts. Tumour cell co-units revealed subtle differences to normal co-units including disruption of basement membrane and loss of β4-integrin, as described in ductal carcinoma in situ (DCIS) in vivo. Inclusion of normal fibroblasts had no influence on co-unit formation; however, inclusion of tumour-associated fibroblasts lead to disruption of co-unit organisation, and this was significantly inhibited in the presence of MMP and/or c-met inhibitors. Conclusions To the best of the authors' knowledge, this study describes for the first time a co-culture model comprising three major components of normal and malignant breast: luminal cells, myoepithelial cells and stromal fibroblasts. These cells organise into structures recapitulating normal and DCIS breast, with homing of myoepithelial cells around the luminal population. Importantly, differences are exhibited between these systems reflecting those described in tissues, including a central role for tumour-associated fibroblasts and MMPs in mediating disruption of normal structures. These findings support the value of these models in dissecting normal and tumour cell behaviour in an appropriate microenvironment.
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Affiliation(s)
- Deborah L Holliday
- Centre for Tumour Biology, Institute of Cancer and CR-UK Clinical Centre, Bart's and The London, Queen Mary's School of Medicine and Dentistry, John Vane Science Centre, Charterhouse Square, London, UK.
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25
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Silveira AC, Hurst DR, Vaidya KS, Ayer DE, Welch DR. Over-expression of the BRMS1 family member SUDS3 does not suppress metastasis of human cancer cells. Cancer Lett 2008; 276:32-7. [PMID: 19070953 DOI: 10.1016/j.canlet.2008.10.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 10/20/2008] [Accepted: 10/22/2008] [Indexed: 10/21/2022]
Abstract
BRMS1 and SUDS3 are related members of SIN3-HDAC chromatin remodeling complexes. We hypothesized that they might have overlapping functions and that SUDS3 over-expression could compensate for BRMS1 deficiency. SUDS3 expression was ubiquitous in seven breast cell lines, regardless of metastatic potential. SUDS3 over-expression in BRMS1-non-expressing metastatic cells did not suppress metastasis, motility, osteopontin secretion, or EGF receptor expression, phenotypes associated with BRMS1-mediated metastasis suppression. This study demonstrates functional differences for BRMS1 family members and highlights how the composition of SIN3-HDAC (BRMS1/SUDS3) complexes uniquely affects protein expression and biological behaviors.
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Affiliation(s)
- Alexandra C Silveira
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35209, USA
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