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Abdollahzadeh F, Khoshdel‐Rad N, Bahrehbar K, Erfanian S, Ezzatizadeh V, Totonchi M, Moghadasali R. Enhancing maturity in 3D kidney micro-tissues through clonogenic cell combinations and endothelial integration. J Cell Mol Med 2024; 28:e18453. [PMID: 38818569 PMCID: PMC11140233 DOI: 10.1111/jcmm.18453] [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: 12/07/2023] [Revised: 05/09/2024] [Accepted: 05/11/2024] [Indexed: 06/01/2024] Open
Abstract
As an advance laboratory model, three-dimensional (3D) organoid culture has recently been recruited to study development, physiology and abnormality of kidney tissue. Micro-tissues derived from primary renal cells are composed of 3D epithelial structures representing the main characteristics of original tissue. In this research, we presented a simple method to isolate mouse renal clonogenic mesenchymal (MLCs) and epithelial-like cells (ELCs). Then we have done a full characterization of MLCs using flow cytometry for surface markers which showed that more than 93% of cells expressed these markers (Cd44, Cd73 and Cd105). Epithelial and stem/progenitor cell markers characterization also performed for ELC cells and upregulating of these markers observed while mesenchymal markers expression levels were not significantly increased in ELCs. Each of these cells were cultured either alone (ME) or in combination with human umbilical vein endothelial cells (HUVECs) (MEH; with an approximate ratio of 10:5:2) to generate more mature kidney structures. Analysis of 3D MEH renal micro-tissues (MEHRMs) indicated a significant increase in renal-specific gene expression including Aqp1 (proximal tubule), Cdh1 (distal tubule), Umod (loop of Henle), Wt1, Podxl and Nphs1 (podocyte markers), compared to those groups without endothelial cells, suggesting greater maturity of the former tissue. Furthermore, ex ovo transplantation showed greater maturation in the constructed 3D kidney.
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Affiliation(s)
- Fatemeh Abdollahzadeh
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
- Department of Developmental BiologyUniversity of Science and CultureTehranIran
| | - Niloofar Khoshdel‐Rad
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
| | - Khadijeh Bahrehbar
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
| | - Saiedeh Erfanian
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
| | - Vahid Ezzatizadeh
- Medical Genetics DepartmentAyandeh Clinical and Genetic LaboratoryVaraminIran
| | - Mehdi Totonchi
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
| | - Reza Moghadasali
- Department of Stem Cells and Developmental Biology, Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECRTehranIran
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2
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Schaeberle CM, Bouffard VA, Sonnenschein C, Soto AM. Modeling Mammary Organogenesis from Biological First Principles: A Systems Biology Approach. Methods Mol Biol 2024; 2745:177-188. [PMID: 38060186 DOI: 10.1007/978-1-0716-3577-3_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Stromal-epithelial interactions mediate mammary gland development and the formation and progression of breast cancer. To study these interactions in vitro, 3D models are essential. We have successfully developed novel 3D in vitro models that allow the formation of mammary gland structures closely resembling those found in vivo and that respond to the hormonal cues that regulate mammary gland morphogenesis and function. Due to their simplicity when compared to in vivo studies, and to their accessibility to visualization in real time, these models are well suited to conceptual and mathematical modeling.
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Affiliation(s)
| | | | | | - Ana M Soto
- Tufts University School of Medicine, Boston, MA, USA.
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3
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Lehtonen AJ, Arasalo O, Srbova L, Heilala M, Pokki J. Magnetic microrheometry of tumor-relevant stiffness levels and probabilistic quantification of viscoelasticity differences inside 3D cell culture matrices. PLoS One 2023; 18:e0282511. [PMID: 36947558 PMCID: PMC10032533 DOI: 10.1371/journal.pone.0282511] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 02/16/2023] [Indexed: 03/23/2023] Open
Abstract
The progression of breast cancer involves cancer-cell invasions of extracellular matrices. To investigate the progression, 3D cell cultures are widely used along with different types of matrices. Currently, the matrices are often characterized using parallel-plate rheometry for matrix viscoelasticity, or liquid-like viscous and stiffness-related elastic characteristics. The characterization reveals averaged information and sample-to-sample variation, yet, it neglects internal heterogeneity within matrices, experienced by cancer cells in 3D culture. Techniques using optical tweezers and magnetic microrheometry have measured heterogeneity in viscoelasticity in 3D culture. However, there is a lack of probabilistic heterogeneity quantification and cell-size-relevant, microscale-viscoelasticity measurements at breast-tumor tissue stiffness up to ≃10 kPa in Young's modulus. Here, we have advanced methods, for the purpose, which use a magnetic microrheometer that applies forces on magnetic spheres within matrices, and detects the spheres displacements. We present probabilistic heterogeneity quantification using microscale-viscoelasticity measurements in 3D culture matrices at breast-tumor-relevant stiffness levels. Bayesian multilevel modeling was employed to distinguish heterogeneity in viscoelasticity from the effects of experimental design and measurement errors. We report about the heterogeneity of breast-tumor-relevant agarose, GrowDex, GrowDex-collagen and fibrin matrices. The degree of heterogeneity differs for stiffness, and phase angle (i.e. ratio between viscous and elastic characteristics). Concerning stiffness, agarose and GrowDex show the lowest and highest heterogeneity, respectively. Concerning phase angle, fibrin and GrowDex-collagen present the lowest and the highest heterogeneity, respectively. While this heterogeneity information involves softer matrices, probed by ≃30 μm magnetic spheres, we employ larger ≃100 μm spheres to increase magnetic forces and acquire a sufficient displacement signal-to-noise ratio in stiffer matrices. Thus, we show pointwise microscale viscoelasticity measurements within agarose matrices up to Young's moduli of 10 kPa. These results establish methods that combine magnetic microrheometry and Bayesian multilevel modeling for enhanced heterogeneity analysis within 3D culture matrices.
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Affiliation(s)
- Arttu J Lehtonen
- Department of Electrical Engineering and Automation, Aalto University, Espoo, Finland
| | - Ossi Arasalo
- Department of Electrical Engineering and Automation, Aalto University, Espoo, Finland
| | - Linda Srbova
- Department of Electrical Engineering and Automation, Aalto University, Espoo, Finland
| | - Maria Heilala
- Department of Applied Physics, Aalto University, Espoo, Finland
| | - Juho Pokki
- Department of Electrical Engineering and Automation, Aalto University, Espoo, Finland
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4
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Hasan N, Zhang Y, Georgakoudi I, Sonnenschein C, Soto AM. Matrix Composition Modulates Vitamin D3's Effects on 3D Collagen Fiber Organization by MCF10A Cells. Tissue Eng Part A 2021; 27:1399-1410. [PMID: 33789436 DOI: 10.1089/ten.tea.2020.0371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Vitamin D3 (vitD3) has been implicated in various cellular functions affecting multiple tissue types. Epidemiological and laboratory studies suggest that vitD3 may be effective as a preventive or therapeutic option for breast cancer. However, randomized clinical trials have yet to confirm these suggestions. Breast neoplasias can arise from developmental alterations; based on this evidence, we seek to understand vitD3's role in normal breast development, particularly its role in epithelial morphogenetic processes such as ductal elongation, branching, and alveolar formation. These processes require extensive changes in the extracellular microenvironment, such as collagen fiber organization, and are largely influenced by hormones. Here, we build upon our past work to shed light on calcitriol's effects on collagen fiber organization by breast epithelial cells, and how such effects are modulated by extracellular matrix composition. We embedded MCF10A normal human breast epithelial cells in two different matrices-collagen type I and collagen type I + 10% Matrigel; treatment with calcitriol resulted in flatter epithelial structures. Next, using two-photon microscopy, we examined changes in collagen fiber organization and corresponding changes in epithelial structures. Applying a novel three-dimensional (3D) image analysis method, we show that increasing doses of calcitriol result in denser collagen fiber bundles in the localized area surrounding the epithelial structures, and that these bundles are aligned in a more parallel direction to epithelial structures when exposed to the highest vitD3 dose. Changed patterns in fiber organization may explain the flattening of epithelial structures; in turn, changes in biophysical forces in the matrix abutting these structures may be responsible for changes in the referred patterns. Addition of 10% Matrigel dampened the effects of calcitriol on both epithelial morphogenesis and fiber organization. Overall, we report novel functions of calcitriol in the breast epithelium and add to the growing body of evidence documenting how hormones affect biophysical processes.
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Affiliation(s)
- Nafis Hasan
- Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, USA
| | - Yang Zhang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, USA
| | - Carlos Sonnenschein
- Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Ana M Soto
- Department of Immunology, Tufts University School of Medicine, Boston, Massachusetts, USA
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5
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Tissue Imaging and Quantification Relying on Endogenous Contrast. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 3233:257-288. [PMID: 34053031 DOI: 10.1007/978-981-15-7627-0_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Cell-matrix interactions play an important role in regulating a variety of essential processes in multicellular organisms, and are closely associated with numerous diseases. Modified interactions have major effects upon key features of both cells and extracellular matrix (ECM), and a thorough understanding of changes in these features can lead to critically important insights of diseases as well as the identification of effective therapeutic targets. Here, we summarize recent advances in quantitative, optical imaging of cellular metabolism and ECM spatial organization using endogenous sources of contrast. Specifically, we focus on the two-photon excited fluorescence (TPEF) imaging of autofluorescent cellular coenzymes, NAD(P)H and FAD, for the extraction of metabolic information described by optical biomarkers including cellular redox state, NAD(P)H fluorescence lifetime, and mitochondrial clustering. We show representative applications in assessing adipose tissue function and detecting malignant lesions in human skin, and further demonstrate that a combination of these optical metrics can provide complementary insights into the underlying biological mechanisms. In addition, we review the development of quantitative analysis methods to extract spatial orientation and organization metrics of collagen fibers, a major ECM component, and demonstrate applications of these approaches in two and three dimensions in several diseases, including would healing, osteoarthritis and cancer, as well as assessments of matrix remodeling in hormone-regulated engineered breast tissues. Finally, we summarize this chapter and discuss important research directions that we expect will evolve in the near future.
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Githaka JM, Tripathi N, Kirschenman R, Patel N, Pandya V, Kramer DA, Montpetit R, Zhu LF, Sonenberg N, Fahlman RP, Danial NN, Underhill DA, Goping IS. BAD regulates mammary gland morphogenesis by 4E-BP1-mediated control of localized translation in mouse and human models. Nat Commun 2021; 12:2939. [PMID: 34011960 PMCID: PMC8134504 DOI: 10.1038/s41467-021-23269-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 04/20/2021] [Indexed: 02/03/2023] Open
Abstract
Elucidation of non-canonical protein functions can identify novel tissue homeostasis pathways. Herein, we describe a role for the Bcl-2 family member BAD in postnatal mammary gland morphogenesis. In Bad3SA knock-in mice, where BAD cannot undergo phosphorylation at 3 key serine residues, pubertal gland development is delayed due to aberrant tubulogenesis of the ductal epithelium. Proteomic and RPPA analyses identify that BAD regulates focal adhesions and the mRNA translation repressor, 4E-BP1. These results suggest that BAD modulates localized translation that drives focal adhesion maturation and cell motility. Consistent with this, cells within Bad3SA organoids contain unstable protrusions with decreased compartmentalized mRNA translation and focal adhesions, and exhibit reduced cell migration and tubulogenesis. Critically, protrusion stability is rescued by 4E-BP1 depletion. Together our results confirm an unexpected role of BAD in controlling localized translation and cell migration during mammary gland development.
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Affiliation(s)
- John Maringa Githaka
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Namita Tripathi
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Raven Kirschenman
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Namrata Patel
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Vrajesh Pandya
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - David A. Kramer
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Rachel Montpetit
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Lin Fu Zhu
- grid.17089.37Department of Surgery, University of Alberta, Edmonton, AB Canada
| | - Nahum Sonenberg
- grid.14709.3b0000 0004 1936 8649Department of Biochemistry, McGill University, Montreal, QC Canada
| | - Richard P. Fahlman
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada
| | - Nika N. Danial
- grid.65499.370000 0001 2106 9910Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA
| | - D. Alan Underhill
- grid.17089.37Department of Oncology, University of Alberta, Edmonton, AB Canada
| | - Ing Swie Goping
- grid.17089.37Department of Biochemistry, University of Alberta, Edmonton, AB Canada ,grid.17089.37Department of Oncology, University of Alberta, Edmonton, AB Canada
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7
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Ouyang M, Yu JY, Chen Y, Deng L, Guo CL. Cell-extracellular matrix interactions in the fluidic phase direct the topology and polarity of self-organized epithelial structures. Cell Prolif 2021; 54:e13014. [PMID: 33615615 PMCID: PMC8016639 DOI: 10.1111/cpr.13014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 12/24/2022] Open
Abstract
Introduction In vivo, cells are surrounded by extracellular matrix (ECM). To build organs from single cells, it is generally believed that ECM serves as scaffolds to coordinate cell positioning and differentiation. Nevertheless, how cells utilize cell‐ECM interactions for the spatiotemporal coordination to different ECM at the tissue scale is not fully understood. Methods Here, using in vitro assay with engineered MDCK cells expressing H2B‐mCherry (nucleus) and gp135/Podocalyxin‐GFP (apical marker), we show in multi‐dimensions that such coordination for epithelial morphogenesis can be determined by cell‐soluble ECM interaction in the fluidic phase. Results The coordination depends on the native topology of ECM components such as sheet‐like basement membrane (BM) and type I collagen (COL) fibres: scaffold formed by BM (COL) facilitates a close‐ended (open‐ended) coordination that leads to the formation of lobular (tubular) epithelium. Further, cells form apicobasal polarity throughout the entire lobule/tubule without a complete coverage of ECM at the basal side, and time‐lapse two‐photon scanning imaging reveals the polarization occurring early and maintained through the lobular expansion. During polarization, gp135‐GFP was converged to the apical surface collectively in the lobular/tubular structures, suggesting possible intercellular communications. Under suspension culture, the polarization was impaired with multi‐lumen formation in the tubules, implying the importance of ECM biomechanical microenvironment. Conclusion Our results suggest a biophysical mechanism for cells to form polarity and coordinate positioning at tissue scale, and in engineering epithelium through cell‐soluble ECM interaction and self‐assembly.
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Affiliation(s)
- Mingxing Ouyang
- Institute of Biomedical Engineering and Health Sciences, School of Pharmacy & School of Medicine, Changzhou University, Changzhou, China.,Department of Bioengineering, California Institute of Technology, Pasadena, USA
| | - Jiun-Yann Yu
- Department of Bioengineering, California Institute of Technology, Pasadena, USA
| | - Yenyu Chen
- Department of Bioengineering, California Institute of Technology, Pasadena, USA
| | - Linhong Deng
- Institute of Biomedical Engineering and Health Sciences, School of Pharmacy & School of Medicine, Changzhou University, Changzhou, China
| | - Chin-Lin Guo
- Department of Bioengineering, California Institute of Technology, Pasadena, USA
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8
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Challenges and solutions for fabrication of three-dimensional cocultures of neural cell-loaded biomimetic constructs. Biointerphases 2021; 16:011202. [PMID: 33706526 DOI: 10.1116/6.0000700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Fabrication of three-dimensional (3D) constructs to model body tissues and organs can contribute to research into tissue development and models for studying disease, as well as supporting preclinical drug screening in vitro. Furthermore, 3D constructs can also be used for diagnosis and therapy of disease conditions via lab on a chip and microarrays for diagnosis and engineered products for tissue repair, replacement, and regeneration. While cell culture approaches for studying tissue development and disease in two dimensions are long-established, the translation of this knowledge into 3D environments remains a fertile field of research. In this Tutorial, we specifically focus on the application of biosynthetic hydrogels for neural cell encapsulation. The Tutorial briefly covers background on using biosynthetic hydrogels for cell encapsulation, as well as common fabrication techniques. The Methods section focuses on the hydrogel design and characterization, highlighting key elements and tips for more effective approaches. Coencapsulation of different cell types, and the challenges associated with different growth and maintenance requirements, is the main focus of this Tutorial. Much care is needed to blend different cell types, and this Tutorial provides tips and insights that have proven successful for 3D coculture in biosynthetic hydrogels.
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9
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Dhimolea E, de Matos Simoes R, Kansara D, Al'Khafaji A, Bouyssou J, Weng X, Sharma S, Raja J, Awate P, Shirasaki R, Tang H, Glassner BJ, Liu Z, Gao D, Bryan J, Bender S, Roth J, Scheffer M, Jeselsohn R, Gray NS, Georgakoudi I, Vazquez F, Tsherniak A, Chen Y, Welm A, Duy C, Melnick A, Bartholdy B, Brown M, Culhane AC, Mitsiades CS. An Embryonic Diapause-like Adaptation with Suppressed Myc Activity Enables Tumor Treatment Persistence. Cancer Cell 2021; 39:240-256.e11. [PMID: 33417832 PMCID: PMC8670073 DOI: 10.1016/j.ccell.2020.12.002] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 10/19/2020] [Accepted: 12/02/2020] [Indexed: 01/23/2023]
Abstract
Treatment-persistent residual tumors impede curative cancer therapy. To understand this cancer cell state we generated models of treatment persistence that simulate the residual tumors. We observe that treatment-persistent tumor cells in organoids, xenografts, and cancer patients adopt a distinct and reversible transcriptional program resembling that of embryonic diapause, a dormant stage of suspended development triggered by stress and associated with suppressed Myc activity and overall biosynthesis. In cancer cells, depleting Myc or inhibiting Brd4, a Myc transcriptional co-activator, attenuates drug cytotoxicity through a dormant diapause-like adaptation with reduced apoptotic priming. Conversely, inducible Myc upregulation enhances acute chemotherapeutic activity. Maintaining residual cells in dormancy after chemotherapy by inhibiting Myc activity or interfering with the diapause-like adaptation by inhibiting cyclin-dependent kinase 9 represent potential therapeutic strategies against chemotherapy-persistent tumor cells. Our study demonstrates that cancer co-opts a mechanism similar to diapause with adaptive inactivation of Myc to persist during treatment.
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Affiliation(s)
- Eugen Dhimolea
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA.
| | - Ricardo de Matos Simoes
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | - Dhvanir Kansara
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | | | - Juliette Bouyssou
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Xiang Weng
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA
| | - Shruti Sharma
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA
| | - Joseline Raja
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA
| | - Pallavi Awate
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA
| | - Ryosuke Shirasaki
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | - Huihui Tang
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | - Brian J Glassner
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | - Zhiyi Liu
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Dong Gao
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jordan Bryan
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | | | - Jennifer Roth
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Michal Scheffer
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA
| | - Rinath Jeselsohn
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Nathanael S Gray
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | | | | | - Yu Chen
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alana Welm
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Cihangir Duy
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA; Cancer Signaling and Epigenetics Program, Institute for Cancer Research, Cancer Epigenetics Institute, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Ari Melnick
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | | | - Myles Brown
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Aedin C Culhane
- Department of Data Sciences, Dana-Farber Cancer Institute & Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Constantine S Mitsiades
- Department of Medical Oncology, Dana-Farber Cancer Institute Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Ludwig Center at Harvard, Boston, MA, USA.
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10
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Environmental control of mammary carcinoma cell expansion by acidification and spheroid formation in vitro. Sci Rep 2020; 10:21959. [PMID: 33319820 PMCID: PMC7738540 DOI: 10.1038/s41598-020-78989-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 12/01/2020] [Indexed: 12/31/2022] Open
Abstract
Breast cancer is the leading cause of cancer death among women worldwide. Like other cancers, mammary carcinoma progression involves acidification of the tumor microenvironment, which is an important factor for cancer detection and treatment strategies. However, the effects of acidity on mammary carcinoma cell morphology and phenotype have not been thoroughly characterized. Here, we evaluated fundamental effects of environmental acidification on mammary carcinoma cells in standard two-dimensional cultures and three-dimensional spheroids. Acidification decreased overall mammary carcinoma cell viability, while increasing their resistance to the anthracycline doxorubicin. Environmental acidification also increased extracellular vesicle production by mammary carcinoma cells. Conditioned media containing these vesicles appeared to increase fibroblast motility. Acidification also increased mammary carcinoma cell motility when cultured with fibroblasts in spheroids. Taken together, results from this study suggest that environmental acidification induces drug resistance and extracellular vesicle production by mammary carcinoma cells that promote tumor expansion.
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11
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Dhimolea E, de Matos Simoes R, Kansara D, Weng X, Sharma S, Awate P, Liu Z, Gao D, Mitsiades N, Schwab JH, Chen Y, Jeselsohn R, Culhane AC, Brown M, Georgakoudi I, Mitsiades CS. Pleiotropic Mechanisms Drive Endocrine Resistance in the Three-Dimensional Bone Microenvironment. Cancer Res 2020; 81:371-383. [PMID: 32859606 DOI: 10.1158/0008-5472.can-20-0571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/24/2020] [Accepted: 08/25/2020] [Indexed: 11/16/2022]
Abstract
Although hormonal therapy (HT) inhibits the growth of hormone receptor-positive (HR+) breast and prostate cancers, HT resistance frequently develops within the complex metastatic microenvironment of the host organ (often the bone), a setting poorly recapitulated in 2D culture systems. To address this limitation, we cultured HR+ breast cancer and prostate cancer spheroids and patient-derived organoids in 3D extracellular matrices (ECM) alone or together with bone marrow stromal cells (BMSC). In 3D monocultures, antiestrogens and antiandrogens induced anoikis by abrogating anchorage-independent growth of HR+ cancer cells but exhibited only modest effects against tumor cells residing in the ECM niche. In contrast, BMSC induced hormone-independent growth of breast cancer and prostate cancer spheroids and restored lumen filling in the presence of HR-targeting agents. Molecular and functional characterization of BMSC-induced hormone independence and HT resistance in anchorage-independent cells revealed distinct context-dependent mechanisms. Cocultures of ZR75-1 and LNCaP with BMSCs exhibited paracrine IL6-induced HT resistance via attenuation of HR protein expression, which was reversed by inhibition of IL6 or JAK signaling. Paracrine IL6/JAK/STAT3-mediated HT resistance was confirmed in patient-derived organoids cocultured with BMSCs. Distinctly, MCF7 and T47D spheroids retained ER protein expression in cocultures but acquired redundant compensatory signals enabling anchorage independence via ERK and PI3K bypass cascades activated in a non-IL6-dependent manner. Collectively, these data characterize the pleiotropic hormone-independent mechanisms underlying acquisition and restoration of anchorage-independent growth in HR+ tumors. Combined analysis of tumor and microenvironmental biomarkers in metastatic biopsies of HT-resistant patients can help refine treatment approaches. SIGNIFICANCE: This study uncovers a previously underappreciated dependency of tumor cells on HR signaling for anchorage-independent growth and highlights how the metastatic microenvironment restores this malignant property of cancer cells during hormone therapy.
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Affiliation(s)
- Eugen Dhimolea
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. .,Harvard Medical School, Boston, Massachusetts.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Ricardo de Matos Simoes
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Dhvanir Kansara
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Xiang Weng
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Shruti Sharma
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Pallavi Awate
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Zhiyi Liu
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Dong Gao
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center (MSKCC), New York, New York
| | | | - Joseph H Schwab
- Harvard Medical School, Boston, Massachusetts.,Massachusetts General Hospital, Boston, Massachusetts
| | - Yu Chen
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center (MSKCC), New York, New York
| | - Rinath Jeselsohn
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts
| | - Aedín C Culhane
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute & Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Myles Brown
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts.,Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Constantine S Mitsiades
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts. .,Harvard Medical School, Boston, Massachusetts.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts
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12
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Viola JM, Porter CM, Gupta A, Alibekova M, Prahl LS, Hughes AJ. Guiding Cell Network Assembly using Shape-Morphing Hydrogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002195. [PMID: 32578300 PMCID: PMC7950730 DOI: 10.1002/adma.202002195] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/30/2020] [Indexed: 05/11/2023]
Abstract
Forces and relative movement between cells and extracellular matrix (ECM) are crucial to the self-organization of tissues during development. However, the spatial range over which these dynamics can be controlled in engineering approaches is limited, impeding progress toward the construction of large, structurally mature tissues. Herein, shape-morphing materials called "kinomorphs" that rationally control the shape and size of multicellular networks are described. Kinomorphs are sheets of ECM that change their shape, size, and density depending on patterns of cell contractility within them. It is shown that these changes can manipulate structure-forming behaviors of epithelial cells in many spatial locations at once. Kinomorphs are built using a new photolithographic technology to pattern single cells into ECM sheets that are >10× larger than previously described. These patterns are designed to partially mimic the branch geometry of the embryonic kidney epithelial network. Origami-inspired simulations are then used to predict changes in kinomorph shapes. Last, kinomorph dynamics are shown to provide a centimeter-scale program that sets specific spatial locations in which ≈50 µm-diameter epithelial tubules form by cell coalescence and structural maturation. The kinomorphs may significantly advance organ-scale tissue construction by extending the spatial range of cell self-organization in emerging model systems such as organoids.
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Affiliation(s)
- John M Viola
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Catherine M Porter
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Ananya Gupta
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Mariia Alibekova
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Louis S Prahl
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Alex J Hughes
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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13
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Vitamin D3 constrains estrogen's effects and influences mammary epithelial organization in 3D cultures. Sci Rep 2019; 9:7423. [PMID: 31092845 PMCID: PMC6520380 DOI: 10.1038/s41598-019-43308-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/18/2019] [Indexed: 12/18/2022] Open
Abstract
Vitamin D3 (vitD3) and its active metabolite, calcitriol (1,25-(OH)2D3), affect multiple tissue types by interacting with the vitamin D receptor (VDR). Although vitD3 deficiency has been correlated with increased incidence of breast cancer and less favorable outcomes, randomized clinical trials have yet to provide conclusive evidence on the efficacy of vitD3 in preventing or treating breast cancer. Additionally, experimental studies are needed to assess the biological plausibility of these outcomes. The mammary gland of VDR KO mice shows a florid phenotype revealing alterations of developmental processes that are largely regulated by mammotropic hormones. However, most research conducted on vitD3's effects used 2D cell cultures and supra-physiological doses of vitD3, conditions that spare the microenvironment in which morphogenesis takes place. We investigated the role of vitD3 in mammary epithelial morphogenesis using two 3D culture models. VitD3 interfered with estrogen's actions on T47D human breast cancer cells in 3D differently at different doses, and recapitulated what is observed in vivo. Also, vitD3 can act autonomously and affected the organization of estrogen-insensitive MCF10A cells in 3D collagen matrix by influencing collagen fiber organization. Thus, vitD3 modulates mammary tissue organization independent of its effects on cell proliferation.
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14
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Reid JA, Mollica PA, Bruno RD, Sachs PC. Consistent and reproducible cultures of large-scale 3D mammary epithelial structures using an accessible bioprinting platform. Breast Cancer Res 2018; 20:122. [PMID: 30305139 PMCID: PMC6180647 DOI: 10.1186/s13058-018-1045-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 08/24/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Standard three-dimensional (3D) in vitro culture techniques, such as those used for mammary epithelial cells, rely on random distribution of cells within hydrogels. Although these systems offer advantages over traditional 2D models, limitations persist owing to the lack of control over cellular placement within the hydrogel. This results in experimental inconsistencies and random organoid morphology. Robust, high-throughput experimentation requires greater standardization of 3D epithelial culture techniques. METHODS Here, we detail the use of a 3D bioprinting platform as an investigative tool to control the 3D formation of organoids through the "self-assembly" of human mammary epithelial cells. Experimental bioprinting procedures were optimized to enable the formation of controlled arrays of individual mammary organoids. We define the distance and cell number parameters necessary to print individual organoids that do not interact between print locations as well as those required to generate large contiguous organoids connected through multiple print locations. RESULTS We demonstrate that as few as 10 cells can be used to form 3D mammary structures in a single print and that prints up to 500 μm apart can fuse to form single large structures. Using these fusion parameters, we demonstrate that both linear and non-linear (contiguous circles) can be generated with sizes of 3 mm in length/diameter. We confirm that cells from individual prints interact to form structures with a contiguous lumen. Finally, we demonstrate that organoids can be printed into human collagen hydrogels, allowing for all-human 3D culture systems. CONCLUSIONS Our platform is adaptable to different culturing protocols and is superior to traditional random 3D culture techniques in efficiency, reproducibility, and scalability. Importantly, owing to the low-cost accessibility and computer numerical control-driven platform of our 3D bioprinter, we have the ability to disseminate our experiments with absolute precision to interested laboratories.
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Affiliation(s)
- John A Reid
- Biomedical Engineering Institute, College of Engineering, Old Dominion University, 5115 Hampton Blvd, Norfolk, VA, 23529, USA
| | - Peter A Mollica
- School of Medical Diagnostic & Translational Sciences, College of Health Sciences, Old Dominion University, 5115 Hampton Blvd, Norfolk, VA, 23529, USA
| | - Robert D Bruno
- School of Medical Diagnostic & Translational Sciences, College of Health Sciences, Old Dominion University, 5115 Hampton Blvd, Norfolk, VA, 23529, USA.
| | - Patrick C Sachs
- School of Medical Diagnostic & Translational Sciences, College of Health Sciences, Old Dominion University, 5115 Hampton Blvd, Norfolk, VA, 23529, USA.
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15
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Liu Z, Speroni L, Quinn KP, Alonzo C, Pouli D, Zhang Y, Stuntz E, Sonnenschein C, Soto AM, Georgakoudi I. 3D organizational mapping of collagen fibers elucidates matrix remodeling in a hormone-sensitive 3D breast tissue model. Biomaterials 2018; 179:96-108. [PMID: 29980078 DOI: 10.1016/j.biomaterials.2018.06.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/08/2018] [Accepted: 06/22/2018] [Indexed: 12/11/2022]
Abstract
Hormones play an important role in normal and diseased breast tissue development. However, they can also disrupt cell-matrix interactions and their role in extracellular matrix reorganization during epithelial morphogenesis remains poorly understood, partly due to a lack of sensitive approaches for matrix characterization. Here, we assess the hormonal regulation of matrix reorganization in a three-dimensional (3D) breast tissue culture model using a novel metric, i.e., 3D directional variance, to characterize the 3D organization of collagen fibers visualized via high-resolution, second harmonic generation imaging. This metric enables resolving and quantifying patterns of spatial organization throughout the matrix surrounding epithelial structures treated with 17β-estradiol (E2) alone, and E2 in combination with either promegestone, a progestogen, or prolactin. Addition of promegestone results in the most disorganized fibers, while the E2 alone treatment leads to the most organized ones. Location-dependent organization mapping indicates that only the prolactin treatment leads to significant heterogeneities in the regional organization of collagen fibers, with higher levels of alignment observed at the end of the elongated epithelial structures. The observed collagen organization patterns for all groups persist for tens of micrometers. In addition, a comparison between 3D directional variance and typical 2D analysis approaches reveals an improved sensitivity of the 3D metric to identify organizational heterogeneities and differences among treatment groups. These results demonstrate that 3D directional variance is sensitive to subtle changes in the extracellular micro-environment and has the potential to elucidate reciprocal cell-matrix interactions in the context of numerous applications involving the study of normal and diseased tissue morphogenesis.
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Affiliation(s)
- Zhiyi Liu
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Lucia Speroni
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Kyle P Quinn
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701, USA
| | - Carlo Alonzo
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Dimitra Pouli
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Yang Zhang
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Emily Stuntz
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Carlos Sonnenschein
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Ana M Soto
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
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16
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Suresh PK. Breast Cancer Heterogeneity: A focus on Epigenetics and In Vitro 3D Model Systems. CELL JOURNAL 2018; 20:302-311. [PMID: 29845782 PMCID: PMC6004987 DOI: 10.22074/cellj.2018.5442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/30/2017] [Indexed: 12/17/2022]
Abstract
Breast cancer (BC) is a widely prevalent form of neoplasia in women with fairly alarming mortality statistics. This aspect may
be attributed, in part, to the current spatial and temporal heterogeneity-based limitations in therapies with possible recurrence
of this tumour at primary and/or secondary sites. Such an extensive phenotypic heterogeneity in breast cancer is unlikely to be
adequately or completely comprehended by an immuno-histopathology-based classification alone. This finding has warranted
research and development in the area of microarray-based methods (i.e. transcriptomic and proteomic chips) for an improved
molecular classification of this complex and heterogeneous tumour. Further, since epigenetics can also be an important
determinant in terms of diagnosis, prognosis and therapy, this review provides an insight into the molecular portrait of BC in
genetic and epigenetic terms. Specifically, the roles of characteristic DNA and histone-based modifications as well as mi-RNA-
based alterations have been discussed with specific examples. Also, their involvement in epithelial mesenchymal transition
(EMT) processes in cancer stem cells (CSCs) has been outlined. Last but not least, the salient aspects and the advantages
of ex vivo/in vitro 3D model systems in recapitulating several aspects of BC tumour (particularly the architecture as well as
the apico-basal polarity) are mentioned. This review hopes to provide not only an improved and updated understanding of
the epigenetics of breast cancer, but to also elaborate on tumour model development/refinement, biomarker evaluation, drug
resistance and test of individual drugs or drug combinations and drug delivery systems.
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Affiliation(s)
- Palamadai Krishnan Suresh
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu.Electronic Address:
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17
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Sweeney MF, Sonnenschein C, Soto AM. Characterization of MCF-12A cell phenotype, response to estrogens, and growth in 3D. Cancer Cell Int 2018; 18:43. [PMID: 29559854 PMCID: PMC5859508 DOI: 10.1186/s12935-018-0534-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 03/05/2018] [Indexed: 01/28/2023] Open
Abstract
Background Three-dimensional cultures of mammary epithelial cells allow for biologically-relevant studies of the development of the mammary gland in rodents and humans under normal and pathological conditions, like carcinogenesis. Under these conditions, mammotropic hormones play significant roles in tissue morphogenesis. Therefore, a system that recreates the normal, hormonally responsive epithelium would be a valuable tool to study the normal state and its transition to carcinogenesis. MCF-12A cells have been claimed to be non-tumorigenic mammary epithelial cells with reported sensitivity to estrogens. In this study, we aimed at characterizing MCF-12A cells for use in a hormone-responsive 3D culture system to determine their usefulness as a tool to identify normal and abnormal microenvironmental cues. Methods MCF-12A cells were single-cell cloned in order to investigate their heterogeneous makeup. The parental cells were then treated with estradiol to investigate proliferative and transcriptional responses through the estrogen receptor alpha. Finally, parental cells and epithelial-like cell-derived clones were seeded in rat-tail collagen I to profile the morphogenesis of multicellular 3D structures. The resultant structures were then analyzed using unsupervised morphometric analysis. Results MCF-12A cells consist of epithelial-like colonies which shed elongated, freely growing cells on the colony's edges. The cells express E-cadherin as well as mesenchymal vimentin but do not express markers associated with myoepithelial cells or fibroblasts. Treatment with estradiol does not affect either the proliferation rate or the induction of gene expression in MCF-12A cells. Parental MCF-12A cells form acini, solid spheres and elongated branching ducts when grown in rat-tail collagen type I matrix, the geometries and distribution of which are altered following the removal of fibroblast-like cells. Conclusions MCF-12A cells are a heterogeneous pseudo-epithelial cell line capable of forming a variety of multicellular structures in 3D culture. We found no indication that the cells display estrogen-responsive characteristics, thus refuting previous studies which reported estrogen responsiveness. We report that MCF-12A cells are not suited for use in studies in which differential behaviors of "normal" and "cancerous" estrogen-responsive cells are to be compared.
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Affiliation(s)
- Michael F Sweeney
- 1Sackler School of Graduate Biomedical Sciences, Tufts University, 136 Harrison Avenue, Boston, MA 02111 USA
| | - Carlos Sonnenschein
- 2Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111 USA
| | - Ana M Soto
- 2Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111 USA
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18
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Dvorak KM, Pettee KM, Rubinic-Minotti K, Su R, Nestor-Kalinoski A, Eisenmann KM. Carcinoma associated fibroblasts (CAFs) promote breast cancer motility by suppressing mammalian Diaphanous-related formin-2 (mDia2). PLoS One 2018; 13:e0195278. [PMID: 29596520 PMCID: PMC5875872 DOI: 10.1371/journal.pone.0195278] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/19/2018] [Indexed: 12/21/2022] Open
Abstract
The tumor microenvironment (TME) promotes tumor cell invasion and metastasis. An important step in the shift to a pro-cancerous microenvironment is the transformation of normal stromal fibroblasts to carcinoma-associated fibroblasts (CAFs). CAFs are present in a majority of solid tumors and can directly promote tumor cell motility via cytokine, chemokine and growth factor secretion into the TME. The exact effects that the TME has upon cytoskeletal regulation in motile tumor cells remain enigmatic. The conserved formin family of cytoskeleton regulating proteins plays an essential role in the assembly and/or bundling of unbranched actin filaments. Mammalian Diaphanous-related formin 2 (mDia2/DIAPH3/Drf3/Dia) assembles a dynamic F-actin cytoskeleton that underlies tumor cell migration and invasion. We therefore sought to understand whether CAF-derived chemokines impact breast tumor cell motility through modification of the formin-assembled F-actin cytoskeleton. In MDA-MB-231 cells, conditioned media (CM) from WS19T CAFs, a human breast tumor-adjacent CAF line, significantly and robustly increased wound closure and invasion relative to normal human mammary fibroblast (HMF)-CM. WS19T-CM also promoted proteasome-mediated mDia2 degradation in MDA-MB-231 cells relative to control HMF-CM and WS21T CAF-CM, a breast CAF cell line that failed to promote robust MDA-MB-231 migration. Cytokine array analysis of CM identified up-regulated secreted factors in WS19T relative to control WS21T CM. We identified CXCL12 as a CM factor influencing loss of mDia2 protein while increasing MDA-MB-231 cell migration. Our data suggest a mechanism whereby CAFs promote tumor cell migration and invasion through CXCL12 secretion to regulate the mDia2-directed cytoskeleton in breast tumor cells.
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Affiliation(s)
- Kaitlyn M. Dvorak
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
| | - Krista M. Pettee
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
| | - Kaitlin Rubinic-Minotti
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
| | - Robin Su
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
| | - Andrea Nestor-Kalinoski
- Department of Surgery, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
| | - Kathryn M. Eisenmann
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio, United States of America
- * E-mail:
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19
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Lanz HL, Saleh A, Kramer B, Cairns J, Ng CP, Yu J, Trietsch SJ, Hankemeier T, Joore J, Vulto P, Weinshilboum R, Wang L. Therapy response testing of breast cancer in a 3D high-throughput perfused microfluidic platform. BMC Cancer 2017; 17:709. [PMID: 29096610 PMCID: PMC5668957 DOI: 10.1186/s12885-017-3709-3] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 10/27/2017] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Breast cancer is the most common invasive cancer among women. Currently, there are only a few models used for therapy selection, and they are often poor predictors of therapeutic response or take months to set up and assay. In this report, we introduce a microfluidic OrganoPlate® platform for extracellular matrix (ECM) embedded tumor culture under perfusion as an initial study designed to investigate the feasibility of adapting this technology for therapy selection. METHODS The triple negative breast cancer cell lines MDA-MB-453, MDA-MB-231 and HCC1937 were selected based on their different BRCA1 and P53 status, and were seeded in the platform. We evaluate seeding densities, ECM composition (Matrigel®, BME2rgf, collagen I) and biomechanical (perfusion vs static) conditions. We then exposed the cells to a series of anti-cancer drugs (paclitaxel, olaparib, cisplatin) and compared their responses to those in 2D cultures. Finally, we generated cisplatin dose responses in 3D cultures of breast cancer cells derived from 2 PDX models. RESULTS The microfluidic platform allows the simultaneous culture of 96 perfused micro tissues, using limited amounts of material, enabling drug screening of patient-derived material. 3D cell culture viability is improved by constant perfusion of the medium. Furthermore, the drug response of these triple negative breast cancer cells was attenuated by culture in 3D and differed from that observed in 2D substrates. CONCLUSIONS We have investigated the use of a high-throughput organ-on-a-chip platform to select therapies. Our results have raised the possibility to use this technology in personalized medicine to support selection of appropriate drugs and to predict response to therapy in a real time fashion.
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Affiliation(s)
| | - Anthony Saleh
- Mimetas BV, Leiden, The Netherlands
- NIH, Bethesda, Maryland USA
| | | | | | | | - Jia Yu
- Mayo Clinic, Rochester, Minnesota USA
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20
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Anandi L, Chakravarty V, Ashiq KA, Bodakuntla S, Lahiri M. DNA-dependent protein kinase plays a central role in transformation of breast epithelial cells following alkylation damage. J Cell Sci 2017; 130:3749-3763. [PMID: 28923836 DOI: 10.1242/jcs.203034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 09/14/2017] [Indexed: 12/25/2022] Open
Abstract
DNA alkylating agents form the first line of cancer chemotherapy. They not only kill cells but also behave as potential carcinogens. MNU, a DNA methylating agent, is well known to induce mammary tumours in rodents. However, the mechanism of tumorigenesis is not well understood. Our study reports a novel role played by DNA-dependent protein kinase (DNA-PK) in methylation damage-induced transformation using three-dimensional breast acinar cultures. Here, we report that exposure of breast epithelial cells to MNU inhibited polarisation at the basolateral domain, increased dispersal of the Golgi at the apical domain and induced an epithelial-to-mesenchymal transition (EMT)-like phenotype as well as invasion. This altered Golgi phenotype correlated with impaired intracellular trafficking. Inhibition of DNA-PK resulted in almost complete reversal of the altered Golgi phenotype and partial rescue of the polarity defect and EMT-like phenotype. The results confirm that methylation damage-induced activation of DNA-PK is a major mechanism in mediating cellular transformation.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Libi Anandi
- Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Vaishali Chakravarty
- Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - K A Ashiq
- Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Satish Bodakuntla
- Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India.,Institut Curie, PSL Research University, CNRS UMR3348, F-91405 Orsay, France
| | - Mayurika Lahiri
- Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
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Martínez C, Fernández C, Prado M, Ozols A, Olmedo DG. Synthesis and characterization of a novel scaffold for bone tissue engineering based on Wharton's jelly. J Biomed Mater Res A 2017; 105:1034-1045. [DOI: 10.1002/jbm.a.35976] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 11/10/2016] [Accepted: 12/06/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Cristian Martínez
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
- Laboratory for the Study of Biomaterials, Department of Oral Pathology, School of Dentistry; University of Buenos Aires; MT de Alvear 2142, 2° “A”, (C1122AAH) Argentina
- Biomaterials Group, School of Dentistry; National University of Cuyo; Mendoza, General San Martin Park (M5502JMA) Argentina
| | - Carlos Fernández
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
| | - Miguel Prado
- Nuclear Materials Group, Bariloche Atomic Center (GMN-CAB), National Atomic Energy Commission; Av. E. Bustillo 9500, San Carlos de Bariloche, (R8402AGP) Argentina
| | - Andres Ozols
- Department of Oral Pathology, Group of Biomaterials for Prostheses, Institute of Biomedical Engineering, Engineering School, Buenos Aires University; Av. Paseo Colón 850 (C1063ACV) Argentina
| | - Daniel G. Olmedo
- Laboratory for the Study of Biomaterials, Department of Oral Pathology, School of Dentistry; University of Buenos Aires; MT de Alvear 2142, 2° “A”, (C1122AAH) Argentina
- National Research Council (CONICET); Buenos Aires (C1122AAH) Argentina
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22
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Wang Z, Liu H, Liu S. Low-Dose Bisphenol A Exposure: A Seemingly Instigating Carcinogenic Effect on Breast Cancer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1600248. [PMID: 28251049 PMCID: PMC5323866 DOI: 10.1002/advs.201600248] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/01/2016] [Indexed: 05/21/2023]
Abstract
Breast cancer is the fifth most common cause of cancer death in the world and the second most common fatal cancer in women. Epidemiological studies and clinical data have indicated that hormones, including estrogen, progesterone, and prolactin, play important roles in the initiation and progression of breast cancer. Bisphenol A (BPA) is one of the most commonly used and thoroughly studied endocrine disruptors. It can be released from consumer products and deposited in the environment, thus creating potential for human exposure through oral, inhaled, and dermal routes. Some recent reviews have summarized the known mechanisms of endocrine disruptions by BPA in human diseases, including obesity, reproductive disorders, and birth defects. However, large knowledge gaps still exist on the roles BPA may play in cancer initiation and development. Evidence from animal and in vitro studies has suggested an association between increased incidence of breast cancer and BPA exposure at doses below the safe reference doses that are the most environmentally relevant. Most current studies have paid little attention to the cancer-promoting properties of BPA at low doses. In this review, recent findings on the carcinogenic effects of low-dose BPA on breast cancer and discussed possible biologic mechanisms are summarized.
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Affiliation(s)
- Zhe Wang
- State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco‐Environmental SciencesChinese Academy of SciencesBeijing100085China
- School of Public HealthXinxiang Medical UniversityXinxiangHenan Province453003China
| | - Huiyu Liu
- Beijing Key Laboratory of BioprocessBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijing100029China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco‐Environmental SciencesChinese Academy of SciencesBeijing100085China
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23
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Gould R, Bassen DM, Chakrabarti A, Varner JD, Butcher J. Population Heterogeneity in the Epithelial to Mesenchymal Transition Is Controlled by NFAT and Phosphorylated Sp1. PLoS Comput Biol 2016; 12:e1005251. [PMID: 28027307 PMCID: PMC5189931 DOI: 10.1371/journal.pcbi.1005251] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 11/17/2016] [Indexed: 12/22/2022] Open
Abstract
Epithelial to mesenchymal transition (EMT) is an essential differentiation program during tissue morphogenesis and remodeling. EMT is induced by soluble transforming growth factor β (TGF-β) family members, and restricted by vascular endothelial growth factor family members. While many downstream molecular regulators of EMT have been identified, these have been largely evaluated individually without considering potential crosstalk. In this study, we created an ensemble of dynamic mathematical models describing TGF-β induced EMT to better understand the operational hierarchy of this complex molecular program. We used ordinary differential equations (ODEs) to describe the transcriptional and post-translational regulatory events driving EMT. Model parameters were estimated from multiple data sets using multiobjective optimization, in combination with cross-validation. TGF-β exposure drove the model population toward a mesenchymal phenotype, while an epithelial phenotype was enhanced following vascular endothelial growth factor A (VEGF-A) exposure. Simulations predicted that the transcription factors phosphorylated SP1 and NFAT were master regulators promoting or inhibiting EMT, respectively. Surprisingly, simulations also predicted that a cellular population could exhibit phenotypic heterogeneity (characterized by a significant fraction of the population with both high epithelial and mesenchymal marker expression) if treated simultaneously with TGF-β and VEGF-A. We tested this prediction experimentally in both MCF10A and DLD1 cells and found that upwards of 45% of the cellular population acquired this hybrid state in the presence of both TGF-β and VEGF-A. We experimentally validated the predicted NFAT/Sp1 signaling axis for each phenotype response. Lastly, we found that cells in the hybrid state had significantly different functional behavior when compared to VEGF-A or TGF-β treatment alone. Together, these results establish a predictive mechanistic model of EMT susceptibility, and potentially reveal a novel signaling axis which regulates carcinoma progression through an EMT versus tubulogenesis response.
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Affiliation(s)
- Russell Gould
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - David M. Bassen
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Anirikh Chakrabarti
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, United States of America
| | - Jeffrey D. Varner
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, United States of America
| | - Jonathan Butcher
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
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24
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McLane JS, Ligon LA. Stiffened Extracellular Matrix and Signaling from Stromal Fibroblasts via Osteoprotegerin Regulate Tumor Cell Invasion in a 3-D Tumor in Situ Model. CANCER MICROENVIRONMENT 2016; 9:127-139. [PMID: 27654881 DOI: 10.1007/s12307-016-0188-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 09/09/2016] [Indexed: 02/04/2023]
Abstract
Several changes have been described in the stroma surrounding a tumor, including changes in cellular composition, altered extracellular matrix composition and organization, and increases in stiffness. Tumor cells are influenced by the composition, organization, and mechanical properties of the microenvironment, and by signals from stromal cells. Here we sought to test whether signaling from stromal fibroblasts and/or the small change in stiffness observed in vivo surrounding epithelial tumors regulates tumor cell invasion from a model of a tumor in situ. We generated a novel tumor in situ model system in which a tumor spheroid is encased within a collagen-IV containing membrane and further encased within a collagen-I matrix of in vivo stiffness with or without fibroblasts. Effects of the matrix, fibroblasts or fibroblast signals were determined by observing the invasion of tumor cells into the matrix. Effects of reciprocal tumor cell signaling upon fibroblasts were determined by observing markers of fibroblast activation. We found that a stiffened matrix led to increased dissemination of MDA-MB-231 cells from tumor spheroids when no fibroblasts were present and that MCF10A cells maintained a more normal organization with a stiffened matrix. The presence of fibroblasts, or fibroblast conditioned media, attenuated the effect upon MDA-MB-231 cells. We also observed an attenuation of fibroblast activation associated gene expression in the presence of MDA-MB-231 cells, with a paradoxical increase in activation associated contractile activity. Furthermore, we identified osteoprotegerin as a soluble factor released by fibroblasts in the stiffened environment that is key to the inhibition of cell invasion.
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Affiliation(s)
- Joshua S McLane
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-5320, USA.,Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180-3590, USA.,Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA
| | - Lee A Ligon
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180-3590, USA. .,Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590, USA.
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25
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Montévil M, Speroni L, Sonnenschein C, Soto AM. Modeling mammary organogenesis from biological first principles: Cells and their physical constraints. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2016; 122:58-69. [PMID: 27544910 DOI: 10.1016/j.pbiomolbio.2016.08.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/29/2016] [Accepted: 08/03/2016] [Indexed: 12/16/2022]
Abstract
In multicellular organisms, relations among parts and between parts and the whole are contextual and interdependent. These organisms and their cells are ontogenetically linked: an organism starts as a cell that divides producing non-identical cells, which organize in tri-dimensional patterns. These association patterns and cells types change as tissues and organs are formed. This contextuality and circularity makes it difficult to establish detailed cause and effect relationships. Here we propose an approach to overcome these intrinsic difficulties by combining the use of two models; 1) an experimental one that employs 3D culture technology to obtain the structures of the mammary gland, namely, ducts and acini, and 2) a mathematical model based on biological principles. The typical approach for mathematical modeling in biology is to apply mathematical tools and concepts developed originally in physics or computer sciences. Instead, we propose to construct a mathematical model based on proper biological principles. Specifically, we use principles identified as fundamental for the elaboration of a theory of organisms, namely i) the default state of cell proliferation with variation and motility and ii) the principle of organization by closure of constraints. This model has a biological component, the cells, and a physical component, a matrix which contains collagen fibers. Cells display agency and move and proliferate unless constrained; they exert mechanical forces that i) act on collagen fibers and ii) on other cells. As fibers organize, they constrain the cells on their ability to move and to proliferate. The model exhibits a circularity that can be interpreted in terms of closure of constraints. Implementing the mathematical model shows that constraints to the default state are sufficient to explain ductal and acinar formation, and points to a target of future research, namely, to inhibitors of cell proliferation and motility generated by the epithelial cells. The success of this model suggests a step-wise approach whereby additional constraints imposed by the tissue and the organism could be examined in silico and rigorously tested by in vitro and in vivo experiments, in accordance with the organicist perspective we embrace.
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Affiliation(s)
- Maël Montévil
- Laboratoire "Matière et Systèmes Complexes" (MSC), UMR 7057 CNRS, Université Paris 7 Diderot, 75205 Paris Cedex 13, France; Institut d'Histoire et de Philosophie des Sciences et des Techniques (IHPST) - UMR 8590, 13, rue du Four, 75006 Paris, France.
| | - Lucia Speroni
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA.
| | - Carlos Sonnenschein
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA; Centre Cavaillès, École Normale Supérieure, Paris, France; Institut d'Etudes Avancées de Nantes, France.
| | - Ana M Soto
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA; Centre Cavaillès, République des Savoirs, CNRS USR3608, Collège de France et École Normale Supérieure, Paris, France.
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26
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Nash CE, Mavria G, Baxter EW, Holliday DL, Tomlinson DC, Treanor D, Novitskaya V, Berditchevski F, Hanby AM, Speirs V. Development and characterisation of a 3D multi-cellular in vitro model of normal human breast: a tool for cancer initiation studies. Oncotarget 2016; 6:13731-41. [PMID: 25915532 PMCID: PMC4537045 DOI: 10.18632/oncotarget.3803] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 03/18/2015] [Indexed: 11/25/2022] Open
Abstract
Multicellular 3-dimensional (3D) in vitro models of normal human breast tissue to study cancer initiation are required. We present a model incorporating three of the major functional cell types of breast, detail the phenotype and document our breast cancer initiation studies. Myoepithelial cells and fibroblasts were isolated and immortalised from breast reduction mammoplasty samples. Tri-cultures containing non-tumorigenic luminal epithelial cells HB2, or HB2 overexpressing different HER proteins, together with myoepithelial cells and fibroblasts were established in collagen I. Phenotype was assessed morphologically and immunohistochemically and compared to normal breast tissue. When all three cell types were present, polarised epithelial structures with lumens and basement membrane production were observed, akin to normal human breast tissue. Overexpression of HER2 or HER2/3 caused a significant increase in size, while HER2 overexpression resulted in development of a DCIS-like phenotype. In summary, we have developed a 3D tri-cellular model of normal human breast, amenable to comparative analysis after genetic manipulation and with potential to dissect the mechanisms behind the early stages of breast cancer initiation.
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Affiliation(s)
- Claire E Nash
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK.,Current address: The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Georgia Mavria
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
| | - Euan W Baxter
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
| | | | - Darren C Tomlinson
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - Darren Treanor
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK.,Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Vera Novitskaya
- School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | | | - Andrew M Hanby
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
| | - Valerie Speirs
- Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
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27
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Paulose T, Montévil M, Speroni L, Cerruti F, Sonnenschein C, Soto AM. SAMA: A Method for 3D Morphological Analysis. PLoS One 2016; 11:e0153022. [PMID: 27035711 PMCID: PMC4818086 DOI: 10.1371/journal.pone.0153022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 03/21/2016] [Indexed: 01/04/2023] Open
Abstract
Three-dimensional (3D) culture models are critical tools for understanding tissue morphogenesis. A key requirement for their analysis is the ability to reconstruct the tissue into computational models that allow quantitative evaluation of the formed structures. Here, we present Software for Automated Morphological Analysis (SAMA), a method by which epithelial structures grown in 3D cultures can be imaged, reconstructed and analyzed with minimum human intervention. SAMA allows quantitative analysis of key features of epithelial morphogenesis such as ductal elongation, branching and lumen formation that distinguish different hormonal treatments. SAMA is a user-friendly set of customized macros operated via FIJI (http://fiji.sc/Fiji), an open-source image analysis platform in combination with a set of functions in R (http://www.r-project.org/), an open-source program for statistical analysis. SAMA enables a rapid, exhaustive and quantitative 3D analysis of the shape of a population of structures in a 3D image. SAMA is cross-platform, licensed under the GPLv3 and available at http://montevil.theobio.org/content/sama.
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Affiliation(s)
- Tessie Paulose
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Maël Montévil
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Lucia Speroni
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Florent Cerruti
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Carlos Sonnenschein
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Ana M Soto
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
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28
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Sokol ES, Miller DH, Breggia A, Spencer KC, Arendt LM, Gupta PB. Growth of human breast tissues from patient cells in 3D hydrogel scaffolds. Breast Cancer Res 2016; 18:19. [PMID: 26926363 PMCID: PMC4772689 DOI: 10.1186/s13058-016-0677-5] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/14/2016] [Indexed: 12/21/2022] Open
Abstract
Background Three-dimensional (3D) cultures have proven invaluable for expanding human tissues for basic research and clinical applications. In both contexts, 3D cultures are most useful when they (1) support the outgrowth of tissues from primary human cells that have not been immortalized through extensive culture or viral infection and (2) include defined, physiologically relevant components. Here we describe a 3D culture system with both of these properties that stimulates the outgrowth of morphologically complex and hormone-responsive mammary tissues from primary human breast epithelial cells. Methods Primary human breast epithelial cells isolated from patient reduction mammoplasty tissues were seeded into 3D hydrogels. The hydrogel scaffolds were composed of extracellular proteins and carbohydrates present in human breast tissue and were cultured in serum-free medium containing only defined components. The physical properties of these hydrogels were determined using atomic force microscopy. Tissue growth was monitored over time using bright-field and fluorescence microscopy, and maturation was assessed using morphological metrics and by immunostaining for markers of stem cells and differentiated cell types. The hydrogel tissues were also studied by fabricating physical models from confocal images using a 3D printer. Results When seeded into these 3D hydrogels, primary human breast epithelial cells rapidly self-organized in the absence of stromal cells and within 2 weeks expanded to form mature mammary tissues. The mature tissues contained luminal, basal, and stem cells in the correct topological orientation and also exhibited the complex ductal and lobular morphologies observed in the human breast. The expanded tissues became hollow when treated with estrogen and progesterone, and with the further addition of prolactin produced lipid droplets, indicating that they were responding to hormones. Ductal branching was initiated by clusters of cells expressing putative mammary stem cell markers, which subsequently localized to the leading edges of the tissue outgrowths. Ductal elongation was preceded by leader cells that protruded from the tips of ducts and engaged with the extracellular matrix. Conclusions These 3D hydrogel scaffolds support the growth of complex mammary tissues from primary patient-derived cells. We anticipate that this culture system will empower future studies of human mammary gland development and biology. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0677-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ethan S Sokol
- Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA, 02142, USA. .,Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Daniel H Miller
- Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA, 02142, USA. .,Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Anne Breggia
- Maine Medical Center Research Institute, Scarborough, ME, 04074, USA.
| | - Kevin C Spencer
- David H. Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA, 02139, USA. .,Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Lisa M Arendt
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, 53711, USA.
| | - Piyush B Gupta
- Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA, 02142, USA. .,Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. .,David H. Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA, 02139, USA. .,Harvard Stem Cell Institute, Cambridge, MA, 02138, USA.
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29
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Speroni L, Sweeney MF, Sonnenschein C, Soto AM. A Hormone-responsive 3D Culture Model of the Human Mammary Gland Epithelium. J Vis Exp 2016:e53098. [PMID: 26891095 DOI: 10.3791/53098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The process of mammary epithelial morphogenesis is influenced by hormones. The study of hormone action on the breast epithelium using 2D cultures is limited to cell proliferation and gene expression endpoints. However, in the organism, mammary morphogenesis occurs in a 3D environment. 3D culture systems help bridge the gap between monolayer cell culture (2D) and the complexity of the organism. Herein, we describe a 3D culture model of the human breast epithelium that is suitable to study hormone action. It uses the commercially available hormone-responsive human breast epithelial cell line, T47D, and rat tail collagen type 1 as a matrix. This 3D culture model responds to the main mammotropic hormones: estradiol, progestins and prolactin. The influence of these hormones on epithelial morphogenesis can be observed after 1- or 2-week treatment according to the endpoint. The 3D cultures can be harvested for analysis of epithelial morphogenesis, cell proliferation and gene expression.
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Affiliation(s)
- Lucia Speroni
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine
| | - Michael F Sweeney
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine
| | - Carlos Sonnenschein
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine
| | - Ana M Soto
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine;
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30
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Pankova D, Chen Y, Terajima M, Schliekelman MJ, Baird BN, Fahrenholtz M, Sun L, Gill BJ, Vadakkan TJ, Kim MP, Ahn YH, Roybal JD, Liu X, Parra Cuentas ER, Rodriguez J, Wistuba II, Creighton CJ, Gibbons DL, Hicks JM, Dickinson ME, West JL, Grande-Allen KJ, Hanash SM, Yamauchi M, Kurie JM. Cancer-Associated Fibroblasts Induce a Collagen Cross-link Switch in Tumor Stroma. Mol Cancer Res 2015; 14:287-95. [PMID: 26631572 DOI: 10.1158/1541-7786.mcr-15-0307] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 11/21/2015] [Indexed: 12/19/2022]
Abstract
UNLABELLED Intratumoral collagen cross-links heighten stromal stiffness and stimulate tumor cell invasion, but it is unclear how collagen cross-linking is regulated in epithelial tumors. To address this question, we used Kras(LA1) mice, which develop lung adenocarcinomas from somatic activation of a Kras(G12D) allele. The lung tumors in Kras(LA1) mice were highly fibrotic and contained cancer-associated fibroblasts (CAF) that produced collagen and generated stiffness in collagen gels. In xenograft tumors generated by injection of wild-type mice with lung adenocarcinoma cells alone or in combination with CAFs, the total concentration of collagen cross-links was the same in tumors generated with or without CAFs, but coinjected tumors had higher hydroxylysine aldehyde-derived collagen cross-links (HLCC) and lower lysine-aldehyde-derived collagen cross-links (LCCs). Therefore, we postulated that an LCC-to-HLCC switch induced by CAFs promotes the migratory and invasive properties of lung adenocarcinoma cells. To test this hypothesis, we created coculture models in which CAFs are positioned interstitially or peripherally in tumor cell aggregates, mimicking distinct spatial orientations of CAFs in human lung cancer. In both contexts, CAFs enhanced the invasive properties of tumor cells in three-dimensional (3D) collagen gels. Tumor cell aggregates that attached to CAF networks on a Matrigel surface dissociated and migrated on the networks. Lysyl hydroxylase 2 (PLOD2/LH2), which drives HLCC formation, was expressed in CAFs, and LH2 depletion abrogated the ability of CAFs to promote tumor cell invasion and migration. IMPLICATIONS CAFs induce a collagen cross-link switch in tumor stroma to influence the invasive properties of tumor cells.
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Affiliation(s)
- Daniela Pankova
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yulong Chen
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Masahiko Terajima
- NC Oral Health Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Mark J Schliekelman
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Brandi N Baird
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - Li Sun
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bartley J Gill
- Department of Bioengineering, Rice University, Houston, Texas
| | - Tegy J Vadakkan
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas
| | - Min P Kim
- Department of Surgery, The Methodist Hospital Research Institute, Houston, Texas
| | - Young-Ho Ahn
- Department of Molecular Medicine and Tissue Injury Defense Research Center, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jonathon D Roybal
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xin Liu
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Edwin Roger Parra Cuentas
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jaime Rodriguez
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ignacio I Wistuba
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Chad J Creighton
- Department of Medicine and Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas. Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Don L Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - John M Hicks
- Department of Pathology, Texas Children's Hospital, Houston, Texas
| | - Mary E Dickinson
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, Durham, North Carolina
| | | | - Samir M Hanash
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mitsuo Yamauchi
- NC Oral Health Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Jonathan M Kurie
- Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas. Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas.
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31
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Shandilya UK, Sharma A, Sodhi M, Kapila N, Kishore A, Mohanty A, Kataria R, Malakar D, Mukesh M. Matrix-based three-dimensional culture of buffalo mammary epithelial cells showed higher induction of genes related to milk protein and fatty acid metabolism. Cell Biol Int 2015; 40:232-8. [DOI: 10.1002/cbin.10555] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/23/2015] [Indexed: 11/08/2022]
Affiliation(s)
| | - Ankita Sharma
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Monika Sodhi
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Neha Kapila
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Amit Kishore
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Ashok Mohanty
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Ranjit Kataria
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Dhruva Malakar
- National Bureau of Animal Genetic Resources; Karnal Haryana India
| | - Manishi Mukesh
- National Bureau of Animal Genetic Resources; Karnal Haryana India
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32
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Dyson RJ, Green JEF, Whiteley JP, Byrne HM. An investigation of the influence of extracellular matrix anisotropy and cell–matrix interactions on tissue architecture. J Math Biol 2015; 72:1775-809. [DOI: 10.1007/s00285-015-0927-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 05/21/2015] [Indexed: 12/25/2022]
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33
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Bergmann S, Steinert M. From Single Cells to Engineered and Explanted Tissues: New Perspectives in Bacterial Infection Biology. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2015; 319:1-44. [PMID: 26404465 DOI: 10.1016/bs.ircmb.2015.06.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cell culture techniques are essential for studying host-pathogen interactions. In addition to the broad range of single cell type-based two-dimensional cell culture models, an enormous amount of coculture systems, combining two or more different cell types, has been developed. These systems enable microscopic visualization and molecular analyses of bacterial adherence and internalization mechanisms and also provide a suitable setup for various biochemical, immunological, and pharmacological applications. The implementation of natural or synthetical scaffolds elevated the model complexity to the level of three-dimensional cell culture. Additionally, several transwell-based cell culture techniques are applied to study bacterial interaction with physiological tissue barriers. For keeping highly differentiated phenotype of eukaryotic cells in ex vivo culture conditions, different kinds of microgravity-simulating rotary-wall vessel systems are employed. Furthermore, the implementation of microfluidic pumps enables constant nutrient and gas exchange during cell cultivation and allows the investigation of long-term infection processes. The highest level of cell culture complexity is reached by engineered and explanted tissues which currently pave the way for a more comprehensive view on microbial pathogenicity mechanisms.
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Affiliation(s)
- Simone Bergmann
- Institute of Microbiology, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
| | - Michael Steinert
- Institute of Microbiology, Technische Universität Braunschweig, Braunschweig, Lower Saxony, Germany
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34
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Abstract
Genetically engineered mouse models (GEMMs) are attractive for the study of cancer; however, they can be time-consuming and expensive to produce and maintain. Thus, in certain contexts, the use of in vitro culture systems of tumor cells may provide an efficient and effective means to test hypotheses before assessment in or to complement discoveries in GEMMs. This introduction will briefly review the issues pertaining to in vitro analyses of primary cancer cells and highlight several "best practice" protocols that can be used when working with diverse types of carcinomas.
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Affiliation(s)
- Andrew D Rhim
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109
| | - Martin Jechlinger
- European Molecular Biology Laboratory, Mouse Biology Unit, 00015 Monterotondo, Italy
| | - Anil K Rustgi
- Gastroenterology Division, Department of Medicine, Department of Genetics and Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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35
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Nash C, Hanby AM, Speirs V. Modelling the Molecular Pathology of Breast Cancer Initiation. MOLECULAR PATHOLOGY LIBRARY 2015. [DOI: 10.1007/978-1-4939-2886-6_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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36
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Alemany-Ribes M, Semino CE. Bioengineering 3D environments for cancer models. Adv Drug Deliv Rev 2014; 79-80:40-9. [PMID: 24996134 DOI: 10.1016/j.addr.2014.06.004] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 06/16/2014] [Accepted: 06/24/2014] [Indexed: 11/26/2022]
Abstract
Tumor development is a dynamic process where cancer cells differentiate, proliferate and migrate interacting among each other and with the surrounding matrix in a three-dimensional (3D) context. Interestingly, the process follows patterns similar to those involved in early tissue formation by accessing specific genetic programs to grow and disseminate. Thus, the complex biological mechanisms driving tumor progression cannot easily be recreated in the laboratory. Yet, essential tumor stages, including epithelial-mesenchymal transition (EMT), tumor-induced angiogenesis and metastasis, urgently need more realistic models in order to unravel the underlying molecular and cellular mechanisms that govern them. The latest implementation of successful 3D models is having a positive impact on the fight against cancer by obtaining more predictive systems for pre-clinical research, therapeutic drug screening, and early cancer diagnosis. In this review we explore the latest advances and challenges in tumor tissue engineering, by accessing knowledge and tools from cancer biology, material science and bioengineering.
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David J, Sayer NM, Sarkar-Tyson M. The use of a three-dimensional cell culture model to investigate host-pathogen interactions of Francisella tularensis in human lung epithelial cells. Microbes Infect 2014; 16:735-45. [PMID: 24796635 DOI: 10.1016/j.micinf.2014.04.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 01/14/2014] [Accepted: 04/07/2014] [Indexed: 01/25/2023]
Abstract
Francisella tularensis inhalation results in bacterial interaction with numerous lung cell types, including those of the epithelium. This work investigates a three-dimensional cell-culture system to characterise the epithelial response to F. tularensis. Immortalised human pneumocytes (A549s) grown in rotating-wall vessel (RWV) bioreactors display an in vivo-like phenotype, which has been confirmed to be driven by specific transcriptional events (8454 genes, p ≤ 0.05). These data support the RWV model as a more in vivo-like culture system to investigate the lung epithelium, compared to monolayer counterparts. RWV-cultured A549s were infected with F. tularensis SchuS4 and LVS and intracellular replication mapped over 22 h compared to monolayer cells. The RWV-cultured A549s were more resistant to SchuS4 and LVS infection (p ≤ 0.05). Transcriptomics identified 2086 genes (p ≤ 0.05) as candidates for host-pathogen interactions which result in the observed increase in resistance of the RWV-cultured A549 cells. Gene and pathway analysis identified processes involved in MMP modulation, endocytosis, mucin production and the complement pathway amongst others. The role of these pathways during infection was further characterised using chemical inhibitors. This work has revealed several new hypotheses worthy of further testing in order to understand the epithelial host response to F. tularensis infection.
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Affiliation(s)
- Jonathan David
- Biomedical Sciences, Dstl, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK.
| | - Natalie M Sayer
- Biomedical Sciences, Dstl, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK
| | - Mitali Sarkar-Tyson
- Biomedical Sciences, Dstl, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK; School of Pathology and Laboratory Medicine, University of Western Australia, QEII Medical Centre, Monash Avenue, Nedlands, WA 6009, USA
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Barnes C, Speroni L, Quinn KP, Montevil M, Saetzler K, Bode-Animashaun G, McKerr G, Georgakoudi I, Downes CS, Sonnenschein C, Howard CV, Soto AM. From single cells to tissues: interactions between the matrix and human breast cells in real time. PLoS One 2014; 9:e93325. [PMID: 24691468 PMCID: PMC3972096 DOI: 10.1371/journal.pone.0093325] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 02/28/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Mammary gland morphogenesis involves ductal elongation, branching, and budding. All of these processes are mediated by stroma--epithelium interactions. Biomechanical factors, such as matrix stiffness, have been established as important factors in these interactions. For example, epithelial cells fail to form normal acinar structures in vitro in 3D gels that exceed the stiffness of a normal mammary gland. Additionally, heterogeneity in the spatial distribution of acini and ducts within individual collagen gels suggests that local organization of the matrix may guide morphogenesis. Here, we quantified the effects of both bulk material stiffness and local collagen fiber arrangement on epithelial morphogenesis. RESULTS The formation of ducts and acini from single cells and the reorganization of the collagen fiber network were quantified using time-lapse confocal microscopy. MCF10A cells organized the surrounding collagen fibers during the first twelve hours after seeding. Collagen fiber density and alignment relative to the epithelial surface significantly increased within the first twelve hours and were a major influence in the shaping of the mammary epithelium. The addition of Matrigel to the collagen fiber network impaired cell-mediated reorganization of the matrix and increased the probability of spheroidal acini rather than branching ducts. The mechanical anisotropy created by regions of highly aligned collagen fibers facilitated elongation and branching, which was significantly correlated with fiber organization. In contrast, changes in bulk stiffness were not a strong predictor of this epithelial morphology. CONCLUSIONS Localized regions of collagen fiber alignment are required for ductal elongation and branching suggesting the importance of local mechanical anisotropy in mammary epithelial morphogenesis. Similar principles may govern the morphology of branching and budding in other tissues and organs.
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Affiliation(s)
- Clifford Barnes
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
| | - Lucia Speroni
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Kyle P. Quinn
- Department of Biomedical Engineering, Tufts University, Boston, Massachusetts, United States of America
| | - Mael Montevil
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Kurt Saetzler
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
| | | | - George McKerr
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Boston, Massachusetts, United States of America
| | - C. Stephen Downes
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
| | - Carlos Sonnenschein
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - C. Vyvyan Howard
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
| | - Ana M. Soto
- School of Biomedical Sciences, University of Ulster, Coleraine, County Londonderry, United Kingdom
- Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
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Paz AC, Soleas J, Poon JC, Trieu D, Waddell TK, McGuigan AP. Challenges and Opportunities for Tissue-Engineering Polarized Epithelium. TISSUE ENGINEERING PART B-REVIEWS 2014; 20:56-72. [DOI: 10.1089/ten.teb.2013.0144] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ana C. Paz
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - John Soleas
- Latner Thoracic Surgery Research Laboratories, McEwen Centre for Regenerative Medicine, Toronto General Hospital, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - James C.H. Poon
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Latner Thoracic Surgery Research Laboratories, McEwen Centre for Regenerative Medicine, Toronto General Hospital, Toronto, ON, Canada
| | - Dennis Trieu
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Latner Thoracic Surgery Research Laboratories, McEwen Centre for Regenerative Medicine, Toronto General Hospital, Toronto, ON, Canada
| | - Thomas K. Waddell
- Latner Thoracic Surgery Research Laboratories, McEwen Centre for Regenerative Medicine, Toronto General Hospital, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Alison P. McGuigan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
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40
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Rapid disorganization of mechanically interacting systems of mammary acini. Proc Natl Acad Sci U S A 2013; 111:658-63. [PMID: 24379367 DOI: 10.1073/pnas.1311312110] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cells and multicellular structures can mechanically align and concentrate fibers in their ECM environment and can sense and respond to mechanical cues by differentiating, branching, or disorganizing. Here we show that mammary acini with compromised structural integrity can interconnect by forming long collagen lines. These collagen lines then coordinate and accelerate transition to an invasive phenotype. Interacting acini begin to disorganize within 12.5 ± 4.7 h in a spatially coordinated manner, whereas acini that do not interact mechanically with other acini disorganize more slowly (in 21.8 ± 4.1 h) and to a lesser extent (P < 0.0001). When the directed mechanical connections between acini were cut with a laser, the acini reverted to a slowly disorganizing phenotype. When acini were fully mechanically isolated from other acini and also from the bulk gel by box-cuts with a side length <900 μm, transition to an invasive phenotype was blocked in 20 of 20 experiments, regardless of waiting time. Thus, pairs or groups of mammary acini can interact mechanically over long distances through the collagen matrix, and these directed mechanical interactions facilitate transition to an invasive phenotype.
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41
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Tan J, Buache E, Alpy F, Daguenet E, Tomasetto CL, Ren GS, Rio MC. Stromal matrix metalloproteinase-11 is involved in the mammary gland postnatal development. Oncogene 2013; 33:4050-9. [PMID: 24141782 DOI: 10.1038/onc.2013.434] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 08/01/2013] [Accepted: 08/02/2013] [Indexed: 01/29/2023]
Abstract
MMP-11 is a bad prognosis paracrine factor in invasive breast cancers. However, its mammary physiological function remains largely unknown. In the present study we have investigated MMP-11 function during postnatal mammary gland development and function using MMP-11-deficient (MMP-11-/-) mice. Histological and immunohistochemical analyses as well as whole-mount mammary gland staining show alteration of the mammary gland in the absence of MMP-11, where ductal tree, alveolar structures and milk production are reduced. Moreover, a series of transplantation experiments allowed us to demonstrate that MMP-11 exerts an essential local paracrine function that favors mammary gland branching and epithelial cell outgrowth and invasion through adjacent connective tissues. Indeed, MMP-11-/- cleared fat pads are not permissive for wild-type epithelium development, whereas MMP-11-/- epithelium transplants grow normally when implanted in wild-type cleared fat pads. In addition, using primary mammary epithelial organoids, we show in vitro that this MMP-11 pro-branching effect is not direct, suggesting that MMP-11 acts via production/release of stroma-associated soluble factor(s). Finally, the lack of MMP-11 leads to decreased periductal collagen content, suggesting that MMP-11 has a role in collagen homeostasis. Thus, local stromal MMP-11 might also regulate mammary epithelial cell behavior mechanically by promoting extracellular matrix stiffness. Collectively, the present data indicate that MMP-11 is a paracrine factor involved during postnatal mammary gland morphogenesis, and support the concept that the stroma strongly impact epithelial cell behavior. Interestingly, stromal MMP-11 has previously been reported to favor malignant epithelial cell survival and promote cancer aggressiveness. Thus, MMP-11 has a paracrine function during mammary gland development that might be harnessed to promote tumor progression, exposing a new link between development and malignancy.
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Affiliation(s)
- J Tan
- 1] Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France [2] Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - E Buache
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France
| | - F Alpy
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France
| | - E Daguenet
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France
| | - C-L Tomasetto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France
| | - G-S Ren
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - M-C Rio
- 1] Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Department of Functional Genomics and Cancer, Centre National de la Recherche Scientifique UMR 7104, Institut National de la Santé et de la Recherche Médicale U964, Université de Strasbourg, Strasbourg, France [2] Equipe Labellisée Ligue National Contre le Cancer, Illkirch, France
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Speroni L, Whitt GS, Xylas J, Quinn KP, Jondeau-Cabaton A, Barnes C, Georgakoudi I, Sonnenschein C, Soto AM. Hormonal regulation of epithelial organization in a three-dimensional breast tissue culture model. Tissue Eng Part C Methods 2013; 20:42-51. [PMID: 23675751 DOI: 10.1089/ten.tec.2013.0054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The establishment of hormone target breast cells in the 1970's resulted in suitable models for the study of hormone control of cell proliferation and gene expression using two-dimensional (2D) cultures. However, to study mammogenesis and breast tumor development in vitro, cells must be able to organize in three-dimensional (3D) structures like in the tissue. We now report the development of a hormone-sensitive 3D culture model for the study of mammogenesis and neoplastic development. Hormone-sensitive T47D breast cancer cells respond to estradiol in a dose-dependent manner by forming complex epithelial structures. Treatment with the synthetic progestagen promegestone, in the presence of estradiol, results in flat epithelial structures that display cytoplasmic projections, a phenomenon reported to precede side-branching. Additionally, as in the mammary gland, treatment with prolactin in the presence of estradiol induces budding structures. These changes in epithelial organization are accompanied by collagen remodeling. Collagen is the major acellular component of the breast stroma and an important player in tumor development and progression. Quantitative analysis of second harmonic generation of collagen fibers revealed that collagen density was more variable surrounding budding and irregularly shaped structures when compared to more regular structures; suggesting that fiber organization in the former is more anisotropic than in the latter. In sum, this new 3D model recapitulates morphogenetic events modulated by mammogenic hormones in the breast, and is suitable for the evaluation of therapeutic agents.
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Affiliation(s)
- Lucia Speroni
- 1 Cell, Molecular, and Developmental Biology Program, Department of Anatomy and Cellular Biology, Tufts University School of Medicine , Boston, Massachusetts
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43
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Soto AM, Brisken C, Schaeberle C, Sonnenschein C. Does cancer start in the womb? altered mammary gland development and predisposition to breast cancer due to in utero exposure to endocrine disruptors. J Mammary Gland Biol Neoplasia 2013; 18:199-208. [PMID: 23702822 PMCID: PMC3933259 DOI: 10.1007/s10911-013-9293-5] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 05/02/2013] [Indexed: 12/21/2022] Open
Abstract
We are now witnessing a resurgence of theories of development and carcinogenesis in which the environment is again being accepted as a major player in phenotype determination. Perturbations in the fetal environment predispose an individual to disease that only becomes apparent in adulthood. For example, gestational exposure to diethylstilbestrol resulted in clear cell carcinoma of the vagina and breast cancer. In this review the effects of the endocrine disruptor bisphenol-A (BPA) on mammary development and tumorigenesis in rodents is used as a paradigmatic example of how altered prenatal mammary development may lead to breast cancer in humans who are also widely exposed to it through plastic goods, food and drink packaging, and thermal paper receipts. Changes in the stroma and its extracellular matrix led to altered ductal morphogenesis. Additionally, gestational and lactational exposure to BPA increased the sensitivity of rats and mice to mammotropic hormones during puberty and beyond, thus suggesting a plausible explanation for the increased incidence of breast cancer.
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Affiliation(s)
- Ana M. Soto
- Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA, USA
- Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, 136 Harrison Avenue Boston, MA, USA
| | - Cathrin Brisken
- Ecole polytechnique fédérale de Lausanne, ISREC - Swiss Institute for Experimental Cancer Research, NCCR Molecular Oncology, SV2832 Station 19, CH-1015 Lausanne, Switzerland
| | - Cheryl Schaeberle
- Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA, USA
| | - Carlos Sonnenschein
- Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA, USA
- Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, 136 Harrison Avenue Boston, MA, USA
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44
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Quinn KP, Georgakoudi I. Rapid quantification of pixel-wise fiber orientation data in micrographs. JOURNAL OF BIOMEDICAL OPTICS 2013; 18:046003. [PMID: 23552635 PMCID: PMC3639785 DOI: 10.1117/1.jbo.18.4.046003] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/14/2013] [Accepted: 03/19/2013] [Indexed: 05/20/2023]
Abstract
Defining fiber orientation at each pixel within a medical image has traditionally been computationally intensive and prone to systematic errors. A weighted orientation vector summation algorithm capable of detecting fiber orientation simultaneously at each pixel within an image is presented. As a result, pixel-specific fiber orientation information with 2 deg to 3 deg accuracy can be determined within seconds, enabling the practical use of pixel-wise orientation data for characterizing structural anisotropy. This analysis technique has applicability and potential diagnostic utility for a variety of modalities, including second harmonic generation, scanning electron microscopy and immunohistochemical imaging is demonstrated.
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Affiliation(s)
- Kyle P Quinn
- Tufts University, Science & Technology Center, Department of Biomedical Engineering, 4 Colby Street, Medford, Massachusetts 02155, USA.
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45
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Dhimolea E, Soto AM, Sonnenschein C. Breast epithelial tissue morphology is affected in 3D cultures by species-specific collagen-based extracellular matrix. J Biomed Mater Res A 2012; 100:2905-12. [PMID: 22696203 DOI: 10.1002/jbm.a.34227] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 03/19/2012] [Accepted: 04/25/2012] [Indexed: 11/08/2022]
Abstract
Collagen-based gels have been widely used to determine the factors that regulate branching morphogenesis in the mammary gland. The patterns of biomechanical gradients and collagen reorganization influence the shape and orientation of epithelial structures in three-dimensional (3D) conditions. We explored in greater detail whether collagen type I fibers with distinct biomechanical and fiber-assembling properties, isolated from either bovine or rat tail tendon, differentially affected the epithelial phenotype in a tissue culture model of the human breast. Rat tail collagen fibers were densely packed into significantly longer and thicker bundles compared to those of the bovine type (average fascicle length 7.35 and 2.29 μm, respectively; p = 0.0001), indicating increased fiber alignment and biomechanical enablement in the former. MCF10A epithelial cells formed elaborated branched tubular structures in bovine but only nonbranched ducts and acini in rat tail collagen matrices. Ductal branching in bovine collagen was associated with interactions between neighboring structures mediated through packed collagen fibers; these fiber-mediated interactions were absent in rat tail collagen gels. Normal breast fibroblasts increased the final size and number of ducts only in rat tail collagen gels while not affecting branching. Our results suggest that the species of origin of collagen used in organotypic cultures may influence epithelial differentiation into alveolar or ductal structures and the patterns of epithelial branching. These observations underscore the importance of considering the species of origin and fiber alignment properties of collagen when engineering branching organs in 3D matrices and interpreting their role in the tissue phenotype.
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Affiliation(s)
- Eugen Dhimolea
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, Boston, Massachusetts
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46
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Long-range mechanical force enables self-assembly of epithelial tubular patterns. Proc Natl Acad Sci U S A 2012; 109:5576-82. [PMID: 22427356 DOI: 10.1073/pnas.1114781109] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Enabling long-range transport of molecules, tubules are critical for human body homeostasis. One fundamental question in tubule formation is how individual cells coordinate their positioning over long spatial scales, which can be as long as the sizes of tubular organs. Recent studies indicate that type I collagen (COL) is important in the development of epithelial tubules. Nevertheless, how cell-COL interactions contribute to the initiation or the maintenance of long-scale tubular patterns is unclear. Using a two-step process to quantitatively control cell-COL interaction, we show that epithelial cells developed various patterns in response to fine-tuned percentages of COL in ECM. In contrast with conventional thoughts, these patterns were initiated and maintained by traction forces created by cells but not diffusive factors secreted by cells. In particular, COL-dependent transmission of force in the ECM led to long-scale (up to 600 μm) interactions between cells. A mechanical feedback effect was encountered when cells used forces to modify cell positioning and COL distribution and orientations. Such feedback led to a bistability in the formation of linear, tubule-like patterns. Using micro-patterning technique, we further show that the stability of tubule-like patterns depended on the lengths of tubules. Our results suggest a mechanical mechanism that cells can use to initiate and maintain long-scale tubular patterns.
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47
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Krause S, Jondeau-Cabaton A, Dhimolea E, Soto AM, Sonnenschein C, Maffini MV. Dual regulation of breast tubulogenesis using extracellular matrix composition and stromal cells. Tissue Eng Part A 2011; 18:520-32. [PMID: 21919795 DOI: 10.1089/ten.tea.2011.0317] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Epithelial-mesenchymal interactions during embryogenesis are critical in defining the phenotype of tissues and organs. The initial elongation of the mammary bud represents a central morphological event requiring extensive epithelial-mesenchymal crosstalk. The precise mechanism orchestrating this outgrowth is still unknown and mostly animal models have been relied upon to explore this process. Highly tunable three-dimensional (3D) culture models are a complementary approach to address the question of phenotypic determination. Here, we used a 3D in vitro culture to study the roles of stromal cells and extracellular matrix components during mammary tubulogenesis. Fibroblasts, adipocytes, and type I collagen actively participated in this process, whereas reconstituted basement membrane inhibited tubulogenesis by affecting collagen organization. We conclude that biochemical and biomechanical signals mediate the interaction between cells and matrix components and are necessary to induce tubulogenesis in vitro.
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Affiliation(s)
- Silva Krause
- Department of Anatomy and Cellular Biology, School of Medicine, Tufts University, Boston, MA 02111, USA
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48
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Leeper AD, Farrell J, Williams LJ, Thomas JS, Dixon JM, Wedden SE, Harrison DJ, Katz E. Determining tamoxifen sensitivity using primary breast cancer tissue in collagen-based three-dimensional culture. Biomaterials 2011; 33:907-15. [PMID: 22048005 DOI: 10.1016/j.biomaterials.2011.10.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 10/11/2011] [Indexed: 01/08/2023]
Abstract
We developed a three-dimensional assay prepared from primary breast cancer tissue and quantified tumor response to tamoxifen therapy. Freshly harvested breast cancer biopsies obtained at the time of curative surgical resection were fragmented and embedded into collagen I cushions. Changes in proliferation, apoptosis and tumor volume in response to tamoxifen treatment were quantified using image analysis software and optical projection tomography. Individual and collective invasion of epithelial cells into the surrounding collagen I was observed over the course of the experiment using phase contrast light microscopy and histopathological methods. Addition of tamoxifen to preparations derived from ER+ tumors demonstrated a range of response as measured by proliferative and apoptotic markers. In keeping with published data, tamoxifen reduced the percentage of apoptotic cells expressing cleaved caspase-3 (p = 0.02, Poisson regression analysis). Tamoxifen also reduced residual epithelial volume in ER+ tumors (p = 0.001, Mann-Whitney test), but not in ER low/- tumors (p = 0.78). Changes in tumor volume, as measured by optical projection tomography, allowed stratification into responsive and non-responsive tumors. The model mirrors observations of breast cancer response and histopathological changes to tamoxifen in neo-adjuvant trials. This assay provides a method of screening a battery of therapeutics against individual cancers, informing subsequent design of neo-adjuvant trials.
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Affiliation(s)
- Alexander D Leeper
- Breakthrough Breast Cancer Research Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
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49
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MCF-7 Cells as a Three-Dimensional Model for the Study of Human Breast Cancer. Tissue Eng Part C Methods 2011; 17:1097-107. [DOI: 10.1089/ten.tec.2011.0260] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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50
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Alcaraz J, Mori H, Ghajar CM, Brownfield D, Galgoczy R, Bissell MJ. Collective epithelial cell invasion overcomes mechanical barriers of collagenous extracellular matrix by a narrow tube-like geometry and MMP14-dependent local softening. Integr Biol (Camb) 2011; 3:1153-66. [PMID: 21993836 DOI: 10.1039/c1ib00073j] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Collective cell invasion (CCI) through interstitial collagenous extracellular matrix (ECM) is crucial to the initial stages of branching morphogenesis, and a hallmark of tissue repair and dissemination of certain tumors. The collagenous ECM acts as a mechanical barrier against CCI. However, the physical nature of this barrier and how it is overcome by cells remains incompletely understood. To address these questions, we performed theoretical and experimental analysis of mammary epithelial branching morphogenesis in 3D type I collagen (collagen-I) gels. We found that the mechanical resistance of collagen-I is largely due to its elastic rather than its viscous properties. We also identified two strategies utilized by mammary epithelial cells that can independently minimize ECM mechanical resistance during CCI. First, cells adopt a narrow tube-like geometry during invasion, which minimizes the elastic opposition from the ECM as revealed by theoretical modeling of the most frequent invasive shapes and sizes. Second, the stiffness of the collagenous ECM is reduced at invasive fronts due to its degradation by matrix metalloproteinases (MMPs), as indicated by direct measurements of collagen-I microelasticity by atomic force microscopy. Molecular techniques further specified that the membrane-bound MMP14 mediates degradation of collagen-I at invasive fronts. Thus, our findings reveal that MMP14 is necessary to efficiently reduce the physical restraints imposed by collagen-I during branching morphogenesis, and help our overall understanding of how forces are balanced between cells and their surrounding ECM to maintain collective geometry and mechanical stability during CCI.
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Affiliation(s)
- Jordi Alcaraz
- Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 977R225A, Berkeley, CA 94720, USA
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