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Li C, Rounds CC, Torres VC, He Y, Xu X, Papavasiliou G, Samkoe KS, Brankov JG, Tichauer KM. Quantifying Imaging Agent Binding and Dissociation in 3-D Cancer Spheroid Tissue Culture Using Paired-Agent Principles. Ann Biomed Eng 2024; 52:1625-1637. [PMID: 38409434 PMCID: PMC10174639 DOI: 10.1007/s10439-024-03476-2] [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: 04/04/2023] [Accepted: 02/10/2024] [Indexed: 02/28/2024]
Abstract
Binding kinetics play an important role in cancer diagnosis and therapeutics. However, current methods of quantifying binding kinetics fail to consider the three-dimensional environment that drugs and imaging agents experience in biological tissue. In response, a methodology to assay agent binding and dissociation in 3-D tissue culture was developed using paired-agent molecular imaging principles. To test the methodology, the uptakes of ABY-029 (an IRDye 800CW-labeled epidermal growth factor receptor (EGFR)-targeted antibody mimetic) and IRDye-700DX carboxylate in 3-D spheroids were measured in four different human cancer cell lines throughout staining and rinsing. A compartment model (optimized for the application) was then fit to the kinetic curves of both imaging agents to estimate binding and dissociation rate constants of the EGFR-targeted ABY-029 agent. A statistically significant correlation was observed between apparent association rate constant (k3) and the receptor concentration experimentally and in simulations (r = 0.99, p < 0.05). A statistically significant difference was found between effective k3 (apparent rate constant of ABY-029 binding to EGFR) values for cell lines with varying levels of EGFR expression (p < 0.05), with no significant difference found between cell lines and controls for other fit parameters. Additionally, a similar binding affinity profile compared to a gold standard method was determined by this model. This low-cost methodology to quantify imaging agent or drug binding affinity in clinically relevant 3-D tumor spheroid models can be used to guide timing of imaging in molecular guided surgery and could have implications in drug development.
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Affiliation(s)
- Chengyue Li
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Cody C Rounds
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Veronica C Torres
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Yusheng He
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Xiaochun Xu
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, USA
| | - Georgia Papavasiliou
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Kimberley S Samkoe
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, USA
| | - Jovan G Brankov
- Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Kenneth M Tichauer
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA.
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2
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Barbier MA, Ferland K, De Koninck H, Doucet EJ, Dubourget L, Kim M, Cattier B, Morissette A, Bchetnia M, Larouche D, Kim DH, St-Jean G, Germain L. Cancer Spheroids Embedded in Tissue-Engineered Skin Substitutes: A New Method to Study Tumorigenicity In Vivo. Int J Mol Sci 2024; 25:1513. [PMID: 38338792 PMCID: PMC10855415 DOI: 10.3390/ijms25031513] [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: 12/28/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Tumorigenic assays are used during a clinical translation to detect the transformation potential of cell-based therapies. One of these in vivo assays is based on the separate injection of each cell type to be used in the clinical trial. However, the injection method requires many animals and several months to obtain useful results. In previous studies, we showed the potential of tissue-engineered skin substitutes (TESs) as a model for normal skin in which cancer cells can be included in vitro. Herein, we showed a new method to study tumorigenicity, using cancer spheroids that were embedded in TESs (cTES) and grafted onto athymic mice, and compared it with the commonly used cell injection assay. Tumors developed in both models, cancer cell injection and cTES grafting, but metastases were not detected at the time of sacrifice. Interestingly, the rate of tumor development was faster in cTESs than with the injection method. In conclusion, grafting TESs is a sensitive method to detect tumor cell growth with and could be developed as an alternative test for tumorigenicity.
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Affiliation(s)
- Martin A. Barbier
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Karel Ferland
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Henri De Koninck
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Emilie J. Doucet
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Ludivine Dubourget
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - MinJoon Kim
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Bettina Cattier
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Amélie Morissette
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Mbarka Bchetnia
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Danielle Larouche
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
| | - Dong Hyun Kim
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
- Department of Dermatology, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si 463-712, Gyeonggi-do, Republic of Korea
| | - Guillaume St-Jean
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | - Lucie Germain
- The Tissue Engineering Laboratory (LOEX), Université Laval’s Research Center, Quebec, QC G1V 0A6, Canada; (M.A.B.); (K.F.); (H.D.K.); (E.J.D.); (L.D.); (M.K.); (B.C.); (A.M.); (M.B.); (D.L.); (D.H.K.)
- Department of Surgery, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
- Regenerative Medicine Division, CHU de Québec-Université Laval Research Centre, Quebec, QC G1J 1Z4, Canada
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Lv J, Du X, Wang M, Su J, Wei Y, Xu C. Construction of tumor organoids and their application to cancer research and therapy. Theranostics 2024; 14:1101-1125. [PMID: 38250041 PMCID: PMC10797287 DOI: 10.7150/thno.91362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024] Open
Abstract
Cancer remains a severe public health burden worldwide. One of the challenges hampering effective cancer therapy is that the existing cancer models hardly recapitulate the tumor microenvironment of human patients. Over the past decade, tumor organoids have emerged as an in vitro 3D tumor model to mimic the pathophysiological characteristics of parental tumors. Various techniques have been developed to construct tumor organoids, such as matrix-based methods, hanging drop, spinner or rotating flask, nonadhesive surface, organ-on-a-chip, 3D bioprinting, and genetic engineering. This review elaborated on cell components and fabrication methods for establishing tumor organoid models. Furthermore, we discussed the application of tumor organoids to cancer modeling, basic cancer research, and anticancer therapy. Finally, we discussed current limitations and future directions in employing tumor organoids for more extensive applications.
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Affiliation(s)
- Jiajing Lv
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- Institute of Medicine, Shanghai University, Shanghai 200444, China
- Organoid Research Center, Shanghai University, Shanghai 200444, China
| | - Xuan Du
- Biopharma Industry Promotion Center Shanghai, Shanghai 201203, China
| | - Miaomiao Wang
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- Institute of Medicine, Shanghai University, Shanghai 200444, China
- Department of Rehabilitation Medicine, Shanghai Zhongye Hospital, Shanghai, 200941, China
| | - Jiacan Su
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- Organoid Research Center, Shanghai University, Shanghai 200444, China
- Department of Orthopedics, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Yan Wei
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- Organoid Research Center, Shanghai University, Shanghai 200444, China
| | - Can Xu
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai 200433, China
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4
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Rapp J, Böhringer D, Schlunck G, Agostini H, Reinhard T, Bucher F. Addressing bias in manual segmentation of spheroid sprouting assays with U-Net. Mol Vis 2023; 29:197-205. [PMID: 38222450 PMCID: PMC10784213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 10/15/2023] [Indexed: 01/16/2024] Open
Abstract
Purpose Angiogenesis research faces the issue of false-positive findings due to the manual analysis pipelines involved in many assays. For example, the spheroid sprouting assay, one of the most prominent in vitro angiogenesis models, is commonly based on manual segmentation of sprouts. In this study, we propose a method for mitigating subconscious or fraudulent bias caused by manual segmentation. This approach involves training a U-Net model on manual segmentations and using the readout of this U-Net model instead of the potentially biased original segmentations. Our hypothesis is that U-Net will mitigate any bias in the manual segmentations because this will impose only random noise during model training. We assessed this idea using a simulation study. Methods The training data comprised 1531 phase contrast images and manual segmentations from various spheroid sprouting assays. We randomly divided the images 1:1 into two groups: a fictitious intervention group and a control group. Bias was simulated exclusively in the intervention group. We simulated two adversarial scenarios: 1) removal of a single randomly selected sprout and 2) systematic shortening of all sprouts. For both scenarios, we compared the original segmentation, adversarial segmentation, and respective U-Net readouts. In the second step, we assessed the sensitivity of this approach to detect a true positive effect. We sampled multiple treatment and control groups with decreasing treatment effects based on unbiased ground truth segmentation. Results This approach was able to mitigate bias in both adversarial scenarios. However, in both scenarios, U-Net detected the real treatment effects based on a comparison to the ground truth. Conclusions This method may prove useful for verifying positive findings in angiogenesis experiments with a manual analysis pipeline when full investigator masking has been neglected or is not feasible.
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Affiliation(s)
- Julian Rapp
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Daniel Böhringer
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Günther Schlunck
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Hansjürgen Agostini
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Thomas Reinhard
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Felicitas Bucher
- Eye Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
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5
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Li C, Holman JB, Shi Z, Qiu B, Ding W. On-chip modeling of tumor evolution: Advances, challenges and opportunities. Mater Today Bio 2023; 21:100724. [PMID: 37483380 PMCID: PMC10359640 DOI: 10.1016/j.mtbio.2023.100724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/16/2023] [Accepted: 07/06/2023] [Indexed: 07/25/2023] Open
Abstract
Tumor evolution is the accumulation of various tumor cell behaviors from tumorigenesis to tumor metastasis and is regulated by the tumor microenvironment (TME). However, the mechanism of solid tumor progression has not been completely elucidated, and thus, the development of tumor therapy is still limited. Recently, Tumor chips constructed by culturing tumor cells and stromal cells on microfluidic chips have demonstrated great potential in modeling solid tumors and visualizing tumor cell behaviors to exploit tumor progression. Herein, we review the methods of developing engineered solid tumors on microfluidic chips in terms of tumor types, cell resources and patterns, the extracellular matrix and the components of the TME, and summarize the recent advances of microfluidic chips in demonstrating tumor cell behaviors, including proliferation, epithelial-to-mesenchymal transition, migration, intravasation, extravasation and immune escape of tumor cells. We also outline the combination of tumor organoids and microfluidic chips to elaborate tumor organoid-on-a-chip platforms, as well as the practical limitations that must be overcome.
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Affiliation(s)
- Chengpan Li
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, 230027, China
- Center for Biomedical Imaging, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Joseph Benjamin Holman
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Zhengdi Shi
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Bensheng Qiu
- Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, 230027, China
- Center for Biomedical Imaging, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Weiping Ding
- Department of Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
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6
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Reyes-Aldasoro CC. Modelling the Tumour Microenvironment, but What Exactly Do We Mean by "Model"? Cancers (Basel) 2023; 15:3796. [PMID: 37568612 PMCID: PMC10416922 DOI: 10.3390/cancers15153796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
The Oxford English Dictionary includes 17 definitions for the word "model" as a noun and another 11 as a verb. Therefore, context is necessary to understand the meaning of the word model. For instance, "model railways" refer to replicas of railways and trains at a smaller scale and a "model student" refers to an exemplary individual. In some cases, a specific context, like cancer research, may not be sufficient to provide one specific meaning for model. Even if the context is narrowed, specifically, to research related to the tumour microenvironment, "model" can be understood in a wide variety of ways, from an animal model to a mathematical expression. This paper presents a review of different "models" of the tumour microenvironment, as grouped by different definitions of the word into four categories: model organisms, in vitro models, mathematical models and computational models. Then, the frequencies of different meanings of the word "model" related to the tumour microenvironment are measured from numbers of entries in the MEDLINE database of the United States National Library of Medicine at the National Institutes of Health. The frequencies of the main components of the microenvironment and the organ-related cancers modelled are also assessed quantitatively with specific keywords. Whilst animal models, particularly xenografts and mouse models, are the most commonly used "models", the number of these entries has been slowly decreasing. Mathematical models, as well as prognostic and risk models, follow in frequency, and these have been growing in use.
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McCabe SM, Wallace GQ, Sloan-Dennison S, Tipping WJ, Shand NC, Graham D, Boyd M, Faulds K. Evaluating nanoparticle localisation in glioblastoma multicellular tumour spheroids by surface enhanced Raman scattering. Analyst 2023. [PMID: 37366648 DOI: 10.1039/d3an00751k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Glioblastoma multiforme (GBM) is a particularly aggressive and high-grade brain cancer, with poor prognosis and life expectancy, in urgent need of novel therapies. These severe outcomes are compounded by the difficulty in distinguishing between cancerous and non-cancerous tissues using conventional imaging techniques. Metallic nanoparticles (NPs) are advantageous due to their diverse optical and physical properties, such as their targeting and imaging potential. In this work, the uptake, distribution, and location of silica coated gold nanoparticles (AuNP-SHINs) within multicellular tumour spheroids (MTS) derived from U87-MG glioblastoma cells was investigated by surface enhanced Raman scattering (SERS) optical mapping. MTS are three-dimensional in vitro tumour mimics that represent a tumour in vivo much more closely than that of a two-dimensional cell culture. By using AuNP-SHIN nanotags, it is possible to readily functionalise the inner gold surface with a Raman reporter, and the outer silica surface with an antibody for tumour specific targeting. The nanotags were designed to target the biomarker tenascin-C overexpressed in U87-MG glioblastoma cells. Immunochemistry indicated that tenascin-C was upregulated within the core of the MTS, however limitations such as NP size, quiescence, and hypoxia, restricted the penetration of the nanotags to the core and they remained in the outer proliferating cells of the spheroids. Previous examples of MTS studies using SERS demonstrated the incubation of NPs on a 2D monolayer of cells, with the subsequent formation of the MTS from these pre-incubated cells. Here, we focus on the localisation of the NPs after incubation into pre-formed MTS to establish a better understanding of targeting and NP uptake. Therefore, this work highlights the importance for the investigation and translation of NP uptake into these 3D in vitro models.
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Affiliation(s)
- Samantha M McCabe
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
- The Defence Science and Technology Laboratory (Dstl), Porton Down, Salisbury, SP4 0JQ, UK
| | - Gregory Q Wallace
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
| | - Sian Sloan-Dennison
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
| | - William J Tipping
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
| | - Neil C Shand
- The Defence Science and Technology Laboratory (Dstl), Porton Down, Salisbury, SP4 0JQ, UK
| | - Duncan Graham
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
| | - Marie Boyd
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Karen Faulds
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, UK.
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8
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Karimi H, Moskal P, Żak A, Stępień EŁ. 3D melanoma spheroid model for the development of positronium biomarkers. Sci Rep 2023; 13:7648. [PMID: 37169794 PMCID: PMC10175546 DOI: 10.1038/s41598-023-34571-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 05/03/2023] [Indexed: 05/13/2023] Open
Abstract
It was recently demonstrated that newly invented positronium imaging may be used for improving cancer diagnostics by providing additional information about tissue pathology with respect to the standardized uptake value currently available in positron emission tomography (PET). Positronium imaging utilizes the properties of positronium atoms, which are built from the electrons and positrons produced in the body during PET examinations. We hypothesized that positronium imaging would be sensitive to the in vitro discrimination of tumor-like three-dimensional structures (spheroids) built of melanoma cell lines with different cancer activities and biological properties. The lifetime of ortho-positronium (o-Ps) was evaluated in melanoma spheroids from two cell lines (WM266-4 and WM115) differing in the stage of malignancy. Additionally, we considered parameters such as the cell number, spheroid size and melanoma malignancy to evaluate their relationship with the o-Ps lifetime. We demonstrate pilot results for o-Ps lifetime measurement in extracellular matrix-free spheroids. With the statistical significance of two standard deviations, we demonstrated that the higher the degree of malignancy and the rate of proliferation of neoplastic cells, the shorter the lifetime of ortho-positronium. In particular, we observed the following indications encouraging further research: (i) WM266-4 spheroids characterized by a higher proliferation rate and malignancy showed a shorter o-Ps lifetime than WM115 spheroids characterized by a lower growth rate. (ii) Both cell lines showed a decrease in the lifetime of o-Ps after spheroid generation on day 8 compared to day 4 in culture, and the mean o-Ps lifetime was longer for spheroids formed from WM115 cells than for those formed from WM266-4 cells, regardless of spheroid age. The results of this study revealed that positronium is a promising biomarker that may be applied in PET diagnostics for the assessment of the degree of cancer malignancy.
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Affiliation(s)
- Hanieh Karimi
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11 Street, 30-348, Kraków, Poland
- Department of Biochemistry, University of Missouri, Columbia, USA
| | - Paweł Moskal
- Department of Experimental Particle Physics and Applications, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Kraków, Poland
- Center for Theranostics, Jagiellonian University, Kraków, Poland
| | - Agata Żak
- Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | - Ewa Ł Stępień
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11 Street, 30-348, Kraków, Poland.
- Center for Theranostics, Jagiellonian University, Kraków, Poland.
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9
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Saemundsson SA, Ganguly S, Curry SD, Goodwin AP, Cha JN. Controlling Cell Organization in 3D Coculture Spheroids Using DNA Interactions. ACS Biomater Sci Eng 2023. [PMID: 37155244 DOI: 10.1021/acsbiomaterials.3c00546] [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: 05/10/2023]
Abstract
The role of stromal and immune cells in transforming the tumor microenvironment is a key consideration in understanding tumor cell behavior and anticancer drug development. To better model these systems in vitro, 3D coculture tumor spheroids have been engineered using a variety of techniques including centrifugation to microwells, hanging drop, low adhesion cultures, and culture of cells in a microfluidic platform. Aside from using bioprinting, however, it has remained more challenging to direct the spatial organization of heterotypic cells in standalone 3D spheroids. To address this, we present an in vitro 3D coculture tumor model where we modulated the interactions between cancer cells and fibroblasts through DNA hybridization. When native heterotypic cells are simply mixed, the cell aggregates typically show cell sorting behavior to form phase separated structures composed of single cell types. In this work, we demonstrate that when MDA-MB-468 breast cancer and NIH/3T3 fibroblasts are directed to associate via complementary DNA, a uniform distribution of the two cell types within a single spheroid was observed. In contrast, in the absence of specific DNA interactions between the cancer cells and fibroblasts, individual clusters of the NIH/3T3 cells formed in each spheroid due to cell sorting. To better understand the effect of heterotypic cell organization on either cell-cell contacts or matrix protein production, the spheroids were further stained with anti-E-cadherin and antifibronectin antibodies. While the amounts of E-cadherin appeared to be similar between the spheroids, a significantly higher amount of fibronectin secretion was observed in the coculture spheroids with uniform mixing of two cell types. This result showed that different heterotypic cell distributions within 3D architecture can influence the ECM protein production that can again alter the properties of the tumor or tumor microenvironment. The present study thus describes the use of DNA templating to direct the organization of cells in coculture spheroids, which can provide mechanistic biological insight into how heterotypic distribution in tumor spheroids can influence tumor progression, metastasis, and drug resistance.
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Affiliation(s)
- Sven A Saemundsson
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
| | - Saheli Ganguly
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
| | - Shane D Curry
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
| | - Andrew P Goodwin
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
- Materials Science and Engineering Program, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
| | - Jennifer N Cha
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
- Materials Science and Engineering Program, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
- Biomedical Engineering Program, University of Colorado, Boulder, 596 UCB, Boulder, Colorado 80303, United States
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10
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Walker BJ, Celora GL, Goriely A, Moulton DE, Byrne HM. Minimal Morphoelastic Models of Solid Tumour Spheroids: A Tutorial. Bull Math Biol 2023; 85:38. [PMID: 36991173 PMCID: PMC10060352 DOI: 10.1007/s11538-023-01141-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 03/03/2023] [Indexed: 03/31/2023]
Abstract
Tumour spheroids have been the focus of a variety of mathematical models, ranging from Greenspan's classical study of the 1970 s through to contemporary agent-based models. Of the many factors that regulate spheroid growth, mechanical effects are perhaps some of the least studied, both theoretically and experimentally, though experimental enquiry has established their significance to tumour growth dynamics. In this tutorial, we formulate a hierarchy of mathematical models of increasing complexity to explore the role of mechanics in spheroid growth, all the while seeking to retain desirable simplicity and analytical tractability. Beginning with the theory of morphoelasticity, which combines solid mechanics and growth, we successively refine our assumptions to develop a somewhat minimal model of mechanically regulated spheroid growth that is free from many unphysical and undesirable behaviours. In doing so, we will see how iterating upon simple models can provide rigorous guarantees of emergent behaviour, which are often precluded by existing, more complex modelling approaches. Perhaps surprisingly, we also demonstrate that the final model considered in this tutorial agrees favourably with classical experimental results, highlighting the potential for simple models to provide mechanistic insight whilst also serving as mathematical examples.
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Affiliation(s)
- Benjamin J Walker
- Department of Mathematical Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
- Department of Mathematics, University College London, Gordon Street, London, WC1H 0AY, UK.
| | - Giulia L Celora
- Department of Mathematics, University College London, Gordon Street, London, WC1H 0AY, UK
- Mathematical Institute, University of Oxford, Woodstock Road, Oxford, OX2 6GG, UK
| | - Alain Goriely
- Mathematical Institute, University of Oxford, Woodstock Road, Oxford, OX2 6GG, UK
| | - Derek E Moulton
- Mathematical Institute, University of Oxford, Woodstock Road, Oxford, OX2 6GG, UK
| | - Helen M Byrne
- Mathematical Institute, University of Oxford, Woodstock Road, Oxford, OX2 6GG, UK
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11
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Pancreatic Cancer Organoids: An Emerging Platform for Precision Medicine? Biomedicines 2023; 11:biomedicines11030890. [PMID: 36979869 PMCID: PMC10046065 DOI: 10.3390/biomedicines11030890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 03/17/2023] Open
Abstract
Despite recent therapeutic advances, pancreatic ductal adenocarcinoma (PDAC) remains one of the most aggressive malignancies, with remarkable resistance to treatment, poor prognosis, and poor clinical outcome. More efficient therapeutic approaches are urgently needed to improve patients’ survival. Recently, the development of organoid culture systems has gained substantial attention as an emerging preclinical research model. PDAC organoids have been developed to study pancreatic cancer biology, progression, and treatment response, filling the translational gap between in vitro and in vivo models. Here, we review the rapidly evolving field of PDAC organoids and their potential as powerful preclinical tools that could pave the way towards precision medicine for pancreatic cancer.
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12
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Gonçalves IG, García-Aznar JM. Hybrid computational models of multicellular tumour growth considering glucose metabolism. Comput Struct Biotechnol J 2023; 21:1262-1271. [PMID: 36814723 PMCID: PMC9939553 DOI: 10.1016/j.csbj.2023.01.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
Cancer cells metabolize glucose through metabolic pathways that differ from those used by healthy and differentiated cells. In particular, tumours have been shown to consume more glucose than their healthy counterparts and to use anaerobic metabolic pathways, even under aerobic conditions. Nevertheless, scientists have still not been able to explain why cancer cells evolved to present an altered metabolism and what evolutionary advantage this might provide them. Experimental and computational models have been increasingly used in recent years to understand some of these biological questions. Multicellular tumour spheroids are effective experimental models as they replicate the initial stages of avascular solid tumour growth. Furthermore, these experiments generate data which can be used to calibrate and validate computational studies that aim to simulate tumour growth. Hybrid models are of particular relevance in this field of research because they model cells as individual agents while also incorporating continuum representations of the substances present in the surrounding microenvironment that may participate in intracellular metabolic networks as concentration or density distributions. Henceforth, in this review, we explore the potential of computational modelling to reveal the role of metabolic reprogramming in tumour growth.
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Key Words
- ABM, agent-based model
- ATP, adenosine triphosphate
- CA, cellular automata
- CPM, cellular Potts model
- ECM, extracellular matrix
- FBA, Flux Balance Analysis
- FDG-PET, [18F]-fluorodeoxyglucose-positron emission tomography
- MCTS, multicellular tumour spheroids
- ODEs, ordinary differential equations
- PDEs, partial differential equations
- SBML, Systems Biology Markup Language
- Warburg effect
- agent-based models
- glucose metabolism
- hybrid modelling
- multicellular simulations
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Affiliation(s)
- Inês G Gonçalves
- Multiscale in Mechanical and Biological Engineering, Department of Mechanical Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Aragon, Spain
| | - José Manuel García-Aznar
- Multiscale in Mechanical and Biological Engineering, Department of Mechanical Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Aragon, Spain
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13
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Du X, Chen Z, Li Q, Yang S, Jiang L, Yang Y, Li Y, Gu Z. Organoids revealed: morphological analysis of the profound next generation in-vitro model with artificial intelligence. Biodes Manuf 2023; 6:319-339. [PMID: 36713614 PMCID: PMC9867835 DOI: 10.1007/s42242-022-00226-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 12/06/2022] [Indexed: 01/21/2023]
Abstract
In modern terminology, "organoids" refer to cells that grow in a specific three-dimensional (3D) environment in vitro, sharing similar structures with their source organs or tissues. Observing the morphology or growth characteristics of organoids through a microscope is a commonly used method of organoid analysis. However, it is difficult, time-consuming, and inaccurate to screen and analyze organoids only manually, a problem which cannot be easily solved with traditional technology. Artificial intelligence (AI) technology has proven to be effective in many biological and medical research fields, especially in the analysis of single-cell or hematoxylin/eosin stained tissue slices. When used to analyze organoids, AI should also provide more efficient, quantitative, accurate, and fast solutions. In this review, we will first briefly outline the application areas of organoids and then discuss the shortcomings of traditional organoid measurement and analysis methods. Secondly, we will summarize the development from machine learning to deep learning and the advantages of the latter, and then describe how to utilize a convolutional neural network to solve the challenges in organoid observation and analysis. Finally, we will discuss the limitations of current AI used in organoid research, as well as opportunities and future research directions. Graphic abstract
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Affiliation(s)
- Xuan Du
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Zaozao Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Qiwei Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Sheng Yang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, 210009 China
| | - Lincao Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Yi Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
| | - Yanhui Li
- State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, 210008 China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096 China
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14
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Generation and Quantification of Cytotoxic Lymphocytes Following Oncolytic Virus Infection of Multi-cellular Tumor Spheroids. Methods Mol Biol 2023; 2614:139-149. [PMID: 36587124 DOI: 10.1007/978-1-0716-2914-7_10] [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: 01/02/2023]
Abstract
Oncolytic viruses (OVs) rapidly and specifically replicate in and kill tumor cells. OV-targeted infection of malignant cells has the potential to create an "inflammatory storm" that stimulates both innate and adaptive anti-tumor immune responses. The generation of anti-tumor immunity following OV treatment has been shown to be crucial for effective therapy. Therefore, establishing methodologies to measure the generation of anti-tumor T cell responses following OV infection in in vitro assays, which better mimic the complexity of the human tumor microenvironment (TME), will be critical to harness the full potential of OV therapy. Such experimental platforms will accelerate the development of next-generation OVs that are capable of overcoming immunosuppressive networks found within the tumor microenvironment. Here we describe a method that was designed to test the generation and quantification of human tumor-specific T cells following OV infection of 3D tumor spheroids cultured with or without fibroblasts.
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15
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Zhang Y, Peng L, Hu K, Gu N. Stress Relaxation-Induced Colon Tumor Multicellular Spheroid Culture Based on Biomimetic Hydrogel for Nanoenzyme Ferroptosis Sensitization Evaluation. Adv Healthc Mater 2023; 12:e2202009. [PMID: 36300602 DOI: 10.1002/adhm.202202009] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/09/2022] [Indexed: 01/26/2023]
Abstract
Ferroptosis has recently become a research hotspot, and the induction of tumor cell ferroptosis has emerged as a powerful method for tumor therapy. However, the efficiency of tumor cell ferroptosis induction remains unmet for clinical use, which may be attributed to the large discrepancies between in vitro and in vivo models. To address this issue, in this study, a hydrogel platform with stress relaxation is utilized to develop a multicellular spheroid model of the DLD1 colon cancer cell line through cancer cell self-organization. The spheroids are highly similar to real tumor tissue, and ferroptosis resistance at the transcriptional, protein, and cellular levels. Collaboration of the ferroptosis induction reagent erastin and the nanoenzyme MnZnFe2 O4 @PEG-COOH to overcome the ferroptosis resistance of the spheroids is also demonstrated. Taken together, this study demonstrates the effectiveness of the model developed using this hydrogel platform for further mechanistic studies, and for the assessment of novel cancer treatment strategies based on ferroptosis.
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Affiliation(s)
- Yi Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, 210029, China
| | - Liyi Peng
- Department of Biomedical Engineering, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, 211103, China
| | - Ke Hu
- Department of Biomedical Engineering, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, 211103, China
| | - Ning Gu
- Department of Biomedical Engineering, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, Jiangsu, 211103, China.,Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
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16
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Li C, Torres VC, He Y, Xu X, Papavasiliou G, Samkoe KS, Brankov JG, Tichauer KM. Quantifying imaging agent binding and dissociation in 3D cancer spheroid tissue culture using paired-agent principles. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2023; 12360:123600L. [PMID: 37180093 PMCID: PMC10174639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Binding kinetics play an important role in cancer diagnosis and therapeutics. However, current methods of quantifying binding kinetics fail to consider the three-dimensional environment that drugs and imaging agents experience in biological tissue. In response, a methodology to assay agent binding and dissociation in 3D tissue culture was developed using paired-agent molecular imaging principles. To test the methodology, the uptakes of ABY-029 (an IRDye 800CW-labeled epidermal growth factor receptor (EGFR)-targeted antibody-mimetic) and IRDye 700DX-carboxylate in 3D spheroids were measured in four different human cancer cell lines throughout staining and rinsing. A compartment model (optimized for the application) was then fit to the kinetic curves of both imaging agents to estimate binding and dissociation rate constants of the EGFR targeted ABY-029 agent. A linear correlation was observed between apparent association rate constant (k 3 ) and the receptor concentration experimentally and in simulations (r = 0.99 , p < 0.05 ). Additionally, a similar binding affinity profile compared to a gold standard method was determined by this model. This low-cost methodology to quantify imaging agent or drug binding affinity in clinically relevant 3D tumor spheroid models, can be used to guide timing of imaging in molecular guided surgery and could have implications in drug development.
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Affiliation(s)
- Chengyue Li
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616
| | - Veronica C. Torres
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616
| | - Yusheng He
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616
| | - Xiaochun Xu
- Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH, 03756
| | | | - Kimberley S. Samkoe
- Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH, 03756
| | - Jovan G. Brankov
- Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, 60616
| | - Kenneth M. Tichauer
- Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, 60616
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17
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Tutty MA, Prina-Mello A. Three-Dimensional Spheroids for Cancer Research. Methods Mol Biol 2023; 2645:65-103. [PMID: 37202612 DOI: 10.1007/978-1-0716-3056-3_3] [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: 05/20/2023]
Abstract
In vitro cell culture is one of the most widely used tools used today for increasing our understanding of various things such as protein production, mechanisms of drug action, tissue engineering, and overall cellular biology. For the past decades, however, cancer researchers have relied heavily on conventional two-dimensional (2D) monolayer culture techniques to test a variety of aspects of cancer research ranging from the cytotoxic effects of antitumor drugs to the toxicity of diagnostic dyes and contact tracers. However, many promising cancer therapies have either weak or no efficacy in real-life conditions, therefore delaying or stopping altogether their translating to the clinic. This is, in part, due to the reductionist 2D cultures used to test these materials, which lack appropriate cell-cell contacts, have altered signaling, do not represent the natural tumor microenvironment, and have different drug responses, due to their reduced malignant phenotype when compared to real in vivo tumors. With the most recent advances, cancer research has moved into 3D biological investigation. Three-dimensional (3D) cultures of cancer cells not only recapitulate the in vivo environment better than their 2D counterparts, but they have, in recent years, emerged as a relatively low-cost and scientifically accurate methodology for studying cancer. In this chapter, we highlight the importance of 3D culture, specifically 3D spheroid culture, reviewing some key methodologies for forming 3D spheroids, discussing the experimental tools that can be used in conjunction with 3D spheroids and finally their applications in cancer research.
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Affiliation(s)
- Melissa Anne Tutty
- Laboratory for Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, Dublin, Ireland.
| | - Adriele Prina-Mello
- Laboratory for Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, Dublin, Ireland
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, (TTMI), School of Medicine, Trinity College Dublin, Dublin, Ireland
- Trinity St. James's Cancer Institute, St. James's Hospital, Trinity College Dublin, Dublin, Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre, CRANN Institute, Trinity College Dublin, Dublin, Ireland
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18
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Romano V, Ruocco MR, Carotenuto P, Barbato A, Venuta A, Acampora V, De Lella S, Vigliar E, Iaccarino A, Troncone G, Calì G, Insabato L, Russo D, Franco B, Masone S, Velotti N, Accurso A, Pellegrino T, Fiume G, Belviso I, Montagnani S, Avagliano A, Arcucci A. Generation and Characterization of a Tumor Stromal Microenvironment and Analysis of Its Interplay with Breast Cancer Cells: An In Vitro Model to Study Breast Cancer-Associated Fibroblast Inactivation. Int J Mol Sci 2022; 23:ijms23126875. [PMID: 35743318 PMCID: PMC9224278 DOI: 10.3390/ijms23126875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 02/01/2023] Open
Abstract
Breast cancer-associated fibroblasts (BCAFs), the most abundant non-cancer stromal cells of the breast tumor microenvironment (TME), dramatically sustain breast cancer (BC) progression by interacting with BC cells. BCAFs, as well as myofibroblasts, display an up regulation of activation and inflammation markers represented by α-smooth muscle actin (α-SMA) and cyclooxygenase 2 (COX-2). BCAF aggregates have been identified in the peripheral blood of metastatic BC patients. We generated an in vitro stromal model consisting of human primary BCAFs grown as monolayers or 3D cell aggregates, namely spheroids and reverted BCAFs, obtained from BCAF spheroids reverted to 2D cell adhesion growth after 216 h of 3D culture. We firstly evaluated the state of activation and inflammation and the mesenchymal status of the BCAF monolayers, BCAF spheroids and reverted BCAFs. Then, we analyzed the MCF-7 cell viability and migration following treatment with conditioned media from the different BCAF cultures. After 216 h of 3D culture, the BCAFs acquired an inactivated phenotype, associated with a significant reduction in α-SMA and COX-2 protein expression. The deactivation of the BCAF spheroids at 216 h was further confirmed by the cytostatic effect exerted by their conditioned medium on MCF-7 cells. Interestingly, the reverted BCAFs also retained a less activated phenotype as indicated by α-SMA protein expression reduction. Furthermore, the reverted BCAFs exhibited a reduced pro-tumor phenotype as indicated by the anti-migratory effect exerted by their conditioned medium on MCF-7 cells. The deactivation of BCAFs without drug treatment is possible and leads to a reduced capability of BCAFs to sustain BC progression in vitro. Consequently, this study could be a starting point to develop new therapeutic strategies targeting BCAFs and their interactions with cancer cells.
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Affiliation(s)
- Veronica Romano
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Maria Rosaria Ruocco
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy;
| | - Pietro Carotenuto
- TIGEM, Telethon Institute of Genetics and Medicine, 80078 Naples, Italy; (P.C.); (A.B.); (B.F.)
- Medical Genetics, Department of Translational Medical Science, University of Naples Federico II, 80131 Naples, Italy
| | - Anna Barbato
- TIGEM, Telethon Institute of Genetics and Medicine, 80078 Naples, Italy; (P.C.); (A.B.); (B.F.)
| | - Alessandro Venuta
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Vittoria Acampora
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Sabrina De Lella
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Elena Vigliar
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Antonino Iaccarino
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Giancarlo Troncone
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Gaetano Calì
- IEOS Istituto di Endocrinologia e Oncologia Sperimentale ‘G. Salvatore’, National Council of Research, 80131 Naples, Italy;
| | - Luigi Insabato
- Anatomic Pathology Unit, Department of Advanced Biomedical Sciences, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (L.I.); (D.R.)
| | - Daniela Russo
- Anatomic Pathology Unit, Department of Advanced Biomedical Sciences, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (L.I.); (D.R.)
| | - Brunella Franco
- TIGEM, Telethon Institute of Genetics and Medicine, 80078 Naples, Italy; (P.C.); (A.B.); (B.F.)
- Medical Genetics, Department of Translational Medical Science, University of Naples Federico II, 80131 Naples, Italy
- Scuola Superiore Meridionale, School for Advanced Studies, 80138 Naples, Italy
| | - Stefania Masone
- Department of Clinical Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy;
| | - Nunzio Velotti
- Department of Advanced Biochemical Sciences, University of Naples Federico II, 80131 Naples, Italy;
| | - Antonello Accurso
- Department of General, Oncological, Bariatric and Endocrine-Metabolic Surgery, University of Naples Federico II, 80131 Naples, Italy;
| | - Tommaso Pellegrino
- DAI Chirurgia Generale, Endocrinologia, Ortopedia e Riabilitazione, Azienda Ospedaliera Universitaria Federico II, 80131 Naples, Italy;
| | - Giuseppe Fiume
- Department of Experimental and Clinical Medicine, University “Magna Graecia” of Catanzaro, 88100 Catanzaro, Italy;
| | - Immacolata Belviso
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Stefania Montagnani
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
| | - Angelica Avagliano
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
- Correspondence: (A.A.); (A.A.); Tel.: +39-081-7463422 (A.A. & A.A.)
| | - Alessandro Arcucci
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (V.R.); (A.V.); (V.A.); (S.D.L.); (E.V.); (A.I.); (G.T.); (I.B.); (S.M.)
- Correspondence: (A.A.); (A.A.); Tel.: +39-081-7463422 (A.A. & A.A.)
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19
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Gardner W, Winkler DA, Cutts SM, Torney SA, Pietersz GA, Muir BW, Pigram PJ. Two-Dimensional and Three-Dimensional Time-of-Flight Secondary Ion Mass Spectrometry Image Feature Extraction Using a Spatially Aware Convolutional Autoencoder. Anal Chem 2022; 94:7804-7813. [PMID: 35616489 DOI: 10.1021/acs.analchem.1c05453] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Feature extraction algorithms are an important class of unsupervised methods used to reduce data dimensionality. They have been applied extensively for time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging─commonly, matrix factorization (MF) techniques such as principal component analysis have been used. A limitation of MF is the assumption of linearity, which is generally not accurate for ToF-SIMS data. Recently, nonlinear autoencoders have been shown to outperform MF techniques for ToF-SIMS image feature extraction. However, another limitation of most feature extraction methods (including autoencoders) that is particularly important for hyperspectral data is that they do not consider spatial information. To address this limitation, we describe the application of the convolutional autoencoder (CNNAE) to hyperspectral ToF-SIMS imaging data. The CNNAE is an artificial neural network developed specifically for hyperspectral data that uses convolutional layers for image encoding, thereby explicitly incorporating pixel neighborhood information. We compared the performance of the CNNAE with other common feature extraction algorithms for two biological ToF-SIMS imaging data sets. We investigated the extracted features and used the dimensionality-reduced data to train additional ML algorithms. By converting two-dimensional convolutional layers to three-dimensional (3D), we also showed how the CNNAE can be extended to 3D ToF-SIMS images. In general, the CNNAE produced features with significantly higher contrast and autocorrelation than other techniques. Furthermore, histologically recognizable features in the data were more accurately represented. The extension of the CNNAE to 3D data also provided an important proof of principle for the analysis of more complex 3D data sets.
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Affiliation(s)
- Wil Gardner
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Bundoora, Victoria 3086, Australia.,La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia.,CSIRO Manufacturing, Clayton, Victoria 3168, Australia
| | - David A Winkler
- La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia.,Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Suzanne M Cutts
- La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Steven A Torney
- La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Geoffrey A Pietersz
- Immune Therapies Laboratory, Burnet Institute, Melbourne, Victoria 3004, Australia.,Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, Victoria 3004, Australia
| | | | - Paul J Pigram
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Bundoora, Victoria 3086, Australia
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20
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Three-dimensional models: a novel approach for lymphoma research. J Cancer Res Clin Oncol 2022; 148:753-765. [DOI: 10.1007/s00432-021-03897-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022]
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21
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Abstract
AbstractTumour spheroid experiments are routinely used to study cancer progression and treatment. Various and inconsistent experimental designs are used, leading to challenges in interpretation and reproducibility. Using multiple experimental designs, live-dead cell staining, and real-time cell cycle imaging, we measure necrotic and proliferation-inhibited regions in over 1000 4D tumour spheroids (3D space plus cell cycle status). By intentionally varying the initial spheroid size and temporal sampling frequencies across multiple cell lines, we collect an abundance of measurements of internal spheroid structure. These data are difficult to compare and interpret. However, using an objective mathematical modelling framework and statistical identifiability analysis we quantitatively compare experimental designs and identify design choices that produce reliable biological insight. Measurements of internal spheroid structure provide the most insight, whereas varying initial spheroid size and temporal measurement frequency is less important. Our general framework applies to spheroids grown in different conditions and with different cell types.
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22
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Beller NC, Lukowski JK, Ludwig KR, Hummon AB. Spatial Stable Isotopic Labeling by Amino Acids in Cell Culture: Pulse-Chase Labeling of Three-Dimensional Multicellular Spheroids for Global Proteome Analysis. Anal Chem 2021; 93:15990-15999. [PMID: 34813286 DOI: 10.1021/acs.analchem.1c03461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three-dimensional cell cultures, or spheroids, are important model systems for cancer research because they recapitulate chemical and phenotypic aspects of in vivo tumors. Spheroids develop radially symmetric chemical gradients, resulting in distinct cellular populations. Stable isotopic labeling by amino acids in cell culture (SILAC) is a well-established approach to quantify protein expression and has previously been used in a pulse-chase format to evaluate temporal changes. In this article, we demonstrate that distinct isotopic signatures can be introduced into discrete spatial cellular populations, effectively tracking proteins to original locations in the spheroid, using a platform that we refer to as spatial SILAC. Spheroid populations were grown with light, medium, and heavy isotopic media, and the concentric shells of cells were harvested by serial trypsinization. Proteins were quantitatively analyzed by ultraperformance liquid chromatography-tandem mass spectrometry. The isotopic signatures correlated with the spatial location and the isotope position do not significantly impact the proteome of each individual layer. Spatial SILAC can be used to examine the proteomic changes in the different layers of the spheroid and to identify protein biomarkers throughout the structure. We show that SILAC labels can be discretely pulsed to discrete positions, without altering the spheroid's proteome, promising future combined pharmacodynamic and pharmacokinetic studies.
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Affiliation(s)
- Nicole C Beller
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jessica K Lukowski
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Katelyn R Ludwig
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Amanda B Hummon
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States.,Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
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23
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Two Numerical Solutions for Solving a Mathematical Model of the Avascular Tumor Growth. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2021. [DOI: 10.30621/jbachs.957601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Krishnan MA, Yadav K, Chelvam V. Agarose Micro-Well Platform for Rapid Generation of Homogenous 3D Tumor Spheroids. Curr Protoc 2021; 1:e199. [PMID: 34288582 DOI: 10.1002/cpz1.199] [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: 11/10/2022]
Abstract
In recent years, 3D culture of tumor spheroids has managed to revolutionize cancer research and drug discovery. 2D monolayer cells grown in cell culture flasks undergo radical changes in cell behavior, structure, and function owing to varying environmental cues and are unable to provide predictive data for preclinical evaluation. 3D tumor spheroids can better recapitulate tumor architecture, cell-cell and cell-matrix connectivity, and the tissue complexity of tumors grown in animal models. However, many of the existing techniques to culture 3D spheroids are time-consuming and ineffective and produce irregular-shaped spheroids that cannot be easily incorporated in biological assays. The set of protocols described herein makes use of a commercial hair brush as a template to create concave micro-well impressions in agarose. This technique is easy, inexpensive, and adaptable and also has the ability to produce uniform, homogenous cancer spheroids, with large diameter (∼1000 μm) and thickness (∼250 μm), within 24 to 48 hr after cell seeding. The 3D spheroids produced using the agarose micro-well platform function as an excellent 3D in vitro model for understanding the extent of penetration, uptake, and distribution of targeted cargos such as a diagnostic or therapeutic agents for identification and treatment of cancer. © 2021 Wiley Periodicals LLC. Basic Protocol 1: Fabrication of agarose micro-well scaffold for growing tumor spheroids using a commercial hair brush Basic Protocol 2: Formation of homogenous tumor spheroids in agarose micro-well platform Basic Protocol 3: Assessing viability of 3D tumor spheroids grown in agarose micro-wells using confocal microscopy Basic Protocol 4: Analyzing uptake and penetration of targeted fluorescent bioconjugate in 3D tumor spheroids using two-photon imaging.
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Affiliation(s)
- Mena Asha Krishnan
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Kratika Yadav
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Venkatesh Chelvam
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India.,Department of Chemistry, Indian Institute of Technology Indore, Madhya Pradesh, India
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25
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Wang Y, Benson E, Fördős F, Lolaico M, Baars I, Fang T, Teixeira A, Högberg B. DNA Origami Penetration in Cell Spheroid Tissue Models is Enhanced by Wireframe Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008457. [PMID: 34096116 PMCID: PMC7613750 DOI: 10.1002/adma.202008457] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/05/2021] [Indexed: 05/16/2023]
Abstract
As DNA origami applications in biomedicine are expanding, more knowledge is needed to assess these structures' interaction with biological systems. Here, uptake and penetration in cell and cell spheroid tissue models (CSTMs) are studied to elucidate whether differences in internal structure can be a factor in the efficacy of DNA-origami-based delivery. Two structures bearing largely similar features in terms of both geometry and molecular weight, but with different internal designs-being either compact, lattice-based origami or following an open, wireframe design-are designed. In CSTMs, wireframe rods are able to penetrate deeper than close-packed rods. Moreover, doxorubicin-loaded wireframe rods show a higher cytotoxicity in CSTMs. These results can be explained by differences in structural mechanics, local deformability, local material density, and accessibility to cell receptors between these two DNA origami design paradigms. In particular, it is suggested that the main reason for the difference in penetration dynamic arises from differences in interaction with scavenger receptors where lattice-based structures appear to be internalized to a higher degree than polygonal structures of the same size and shape. It is thus argued that the choice of structural design method constitutes a crucial parameter for the application of DNA origami in drug delivery.
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Affiliation(s)
- Yang Wang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Erik Benson
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Ferenc Fördős
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Marco Lolaico
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Igor Baars
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Trixy Fang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Ana Teixeira
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Björn Högberg
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm SE-17177, Sweden
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26
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In-Silico Modeling of Tumor Spheroid Formation and Growth. MICROMACHINES 2021; 12:mi12070749. [PMID: 34202262 PMCID: PMC8303756 DOI: 10.3390/mi12070749] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/20/2022]
Abstract
Mathematical modeling has significant potential for understanding of biological models of cancer and to accelerate the progress in cross-disciplinary approaches of cancer treatment. In mathematical biology, solid tumor spheroids are often studied as preliminary in vitro models of avascular tumors. The size of spheroids and their cell number are easy to track, making them a simple in vitro model to investigate tumor behavior, quantitatively. The growth of solid tumors is comprised of three main stages: transient formation, monotonic growth and a plateau phase. The last two stages are extensively studied. However, the initial transient formation phase is typically missing from the literature. This stage is important in the early dynamics of growth, formation of clonal sub-populations, etc. In the current work, this transient formation is modeled by a reaction–diffusion partial differential equation (PDE) for cell concentration, coupled with an ordinary differential equation (ODE) for the spheroid radius. Analytical and numerical solutions of the coupled equations were obtained for the change in the radius of tumor spheroids over time. Human glioblastoma (hGB) cancer cells (U251 and U87) were spheroid cultured to validate the model prediction. Results of this study provide insight into the mechanism of development of solid tumors at their early stage of formation.
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27
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Gaitán-Salvatella I, López-Villegas EO, González-Alva P, Susate-Olmos F, Álvarez-Pérez MA. Case Report: Formation of 3D Osteoblast Spheroid Under Magnetic Levitation for Bone Tissue Engineering. Front Mol Biosci 2021; 8:672518. [PMID: 34235178 PMCID: PMC8255365 DOI: 10.3389/fmolb.2021.672518] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 06/03/2021] [Indexed: 12/12/2022] Open
Abstract
Skeletal reconstruction is necessary in cases of bone defects created by tumors, trauma, and abnormalities. Regeneration of bone defects remains a critical problem, and current approaches are based on biocompatible scaffolds. Spheroids represent a simple 3D system since no supporting material is required for cell growth. Different techniques are used to generate spheroids, such as hanging drop, low-attachment plates, and magnetic nanoparticles. The idea of using magnetic nanoparticles is to cross-link through cell membrane overnight to create complex 3D cellular spheroid by using magnets to guide the cellular response. Herein, the current study aimed to achieve 3D human fetal osteoblast (hFOB) spheroid under magnetic levitation. Formation of 3D spheroid culture under magnetic levitation was evaluated by cell viability at 3, 7, and 14 days. Morphology of the 3D hFOB spheroid was analyzed by SEM and fluorescence microscopy and the differentiation towards mineralized lineage by ALP assay, qPCR, and alizarin red staining. The cell viability indicated that the 3D hFOB spheroid still viable after 14 days of culture. ALP assay, qPCR analysis expression of Col1, ALP, and Itg-β1 molecules, and calcium deposition with alizarin red showed a high level of bioactivity of the 3D hFOB spheroid. SEM images allowed the morphological analysis of the 3D microtissue-like spheroid with the presence of matrix deposition. These results indicate that magnetic levitation culture enables 3D stable osteoblast spheroids and could be a promising strategy for engineering application in the 3D construct in surgery regeneration of mineralized tissue.
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Affiliation(s)
- Iñigo Gaitán-Salvatella
- Tissue Bioengineering Laboratory, Postgraduate Studies and Research Division, Faculty of Dentistry, National Autonomous University of Mexico (UNAM), México City, Mexico
| | | | - Patricia González-Alva
- Tissue Bioengineering Laboratory, Postgraduate Studies and Research Division, Faculty of Dentistry, National Autonomous University of Mexico (UNAM), México City, Mexico
| | | | - Marco Antonio Álvarez-Pérez
- Tissue Bioengineering Laboratory, Postgraduate Studies and Research Division, Faculty of Dentistry, National Autonomous University of Mexico (UNAM), México City, Mexico
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28
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Ganguli A, Mostafa A, Saavedra C, Kim Y, Le P, Faramarzi V, Feathers RW, Berger J, Ramos-Cruz KP, Adeniba O, Diaz GJP, Drnevich J, Wright CL, Hernandez AG, Lin W, Smith AM, Kosari F, Vasmatzis G, Anastasiadis PZ, Bashir R. Three-dimensional microscale hanging drop arrays with geometric control for drug screening and live tissue imaging. SCIENCE ADVANCES 2021; 7:7/17/eabc1323. [PMID: 33893093 PMCID: PMC8064630 DOI: 10.1126/sciadv.abc1323] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 03/05/2021] [Indexed: 05/09/2023]
Abstract
Existing three-dimensional (3D) culture techniques are limited by trade-offs between throughput, capacity for high-resolution imaging in living state, and geometric control. Here, we introduce a modular microscale hanging drop culture where simple design elements allow high replicates for drug screening, direct on-chip real-time or high-resolution confocal microscopy, and geometric control in 3D. Thousands of spheroids can be formed on our microchip in a single step and without any selective pressure from specific matrices. Microchip cultures from human LN229 glioblastoma and patient-derived mouse xenograft cells retained genomic alterations of originating tumors based on mate pair sequencing. We measured response to drugs over time with real-time microscopy on-chip. Last, by engineering droplets to form predetermined geometric shapes, we were able to manipulate the geometry of cultured cell masses. These outcomes can enable broad applications in advancing personalized medicine for cancer and drug discovery, tissue engineering, and stem cell research.
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Affiliation(s)
- A Ganguli
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - A Mostafa
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - C Saavedra
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Y Kim
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - P Le
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - V Faramarzi
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - R W Feathers
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - J Berger
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - K P Ramos-Cruz
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - O Adeniba
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - G J Pagan Diaz
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - J Drnevich
- High-Performance Biological Computing, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - C L Wright
- DNA Services Lab, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - A G Hernandez
- DNA Services Lab, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - W Lin
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - A M Smith
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, Urbana, IL 61820, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - F Kosari
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - G Vasmatzis
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - P Z Anastasiadis
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA.
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - R Bashir
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Mayo-Illinois Alliance for Technology-Based Healthcare, Urbana, IL, USA
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, Urbana, IL 61820, USA
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29
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Chen Z, Ma N, Sun X, Li Q, Zeng Y, Chen F, Sun S, Xu J, Zhang J, Ye H, Ge J, Zhang Z, Cui X, Leong K, Chen Y, Gu Z. Automated evaluation of tumor spheroid behavior in 3D culture using deep learning-based recognition. Biomaterials 2021; 272:120770. [PMID: 33798957 DOI: 10.1016/j.biomaterials.2021.120770] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/26/2022]
Abstract
Three-dimensional in vitro tumor models provide more physiologically relevant responses to drugs than 2D models, but the lack of proper evaluation indices and the laborious quantitation of tumor behavior in 3D have limited the use of 3D tumor models in large-scale preclinical drug screening. Here we propose two indices of 3D tumor invasiveness-the excess perimeter index (EPI) and the multiscale entropy index (MSEI)-and combine these indices with a new convolutional neural network-based algorithm for tumor spheroid boundary detection. This new algorithm for 3D tumor boundary detection and invasiveness analysis is more accurate than any other existing algorithms. We apply this spheroid monitoring and AI-based recognition technique ("SMART") to evaluating the invasiveness of tumor spheroids grown from tumor cell lines and from primary tumor cells in 3D culture.
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Affiliation(s)
- Zaozao Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China; Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Ning Ma
- School of Computer Science and Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Xiaowei Sun
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Qiwei Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Yi Zeng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Fei Chen
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Shiqi Sun
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Jun Xu
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Jing Zhang
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Huan Ye
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Jianjun Ge
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Zheng Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Xingran Cui
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Kam Leong
- Department of Biomedical Engineering, Columbia University, New York, NY, 10032, USA
| | - Yang Chen
- School of Computer Science and Engineering, Southeast University, Nanjing, Jiangsu, 210096, China.
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China; Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China.
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30
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Jin W, Spoerri L, Haass NK, Simpson MJ. Mathematical Model of Tumour Spheroid Experiments with Real-Time Cell Cycle Imaging. Bull Math Biol 2021; 83:44. [PMID: 33743088 DOI: 10.1007/s11538-021-00878-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/26/2021] [Indexed: 02/06/2023]
Abstract
Three-dimensional (3D) in vitro tumour spheroid experiments are an important tool for studying cancer progression and potential cancer drug therapies. Standard experiments involve growing and imaging spheroids to explore how different conditions lead to different rates of spheroid growth. These kinds of experiments, however, do not reveal any information about the spatial distribution of the cell cycle within the expanding spheroid. Since 2008, a new experimental technology called fluorescent ubiquitination-based cell cycle indicator (FUCCI) has enabled real-time in situ visualisation of the cell cycle progression. Observations of 3D tumour spheroids with FUCCI labelling reveal significant intratumoural structure, as the cell cycle status can vary with location. Although many mathematical models of tumour spheroid growth have been developed, none of the existing mathematical models are designed to interpret experimental observations with FUCCI labelling. In this work, we adapt the mathematical framework originally proposed by Ward and King (Math Med Biol 14:39-69, 1997. https://doi.org/10.1093/imammb/14.1.39 ) to produce a new mathematical model of FUCCI-labelled tumour spheroid growth. The mathematical model treats the spheroid as being composed of three subpopulations: (i) living cells in G1 phase that fluoresce red; (ii) living cells in S/G2/M phase that fluoresce green; and (iii) dead cells that are not fluorescent. We assume that the rates at which cells pass through different phases of the cell cycle, and the rate of cell death, depend upon the local oxygen concentration. Parameterising the new mathematical model using experimental measurements of cell cycle transition times, we show that the model can qualitatively capture important experimental observations that cannot be addressed using previous mathematical models. Further, we show that the mathematical model can be used to qualitatively mimic the action of anti-mitotic drugs applied to the spheroid. All software programs required to solve the nonlinear moving boundary problem associated with the new mathematical model are available on GitHub. at https://github.com/wang-jin-mathbio/Jin2021.
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Affiliation(s)
- Wang Jin
- School of Mathematical Sciences, Queensland University of Technology (QUT), Brisbane, Australia
| | - Loredana Spoerri
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, Australia
| | - Nikolas K Haass
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, Australia
| | - Matthew J Simpson
- School of Mathematical Sciences, Queensland University of Technology (QUT), Brisbane, Australia.
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Paczkowski M, Kretzschmar WW, Markelc B, Liu SK, Kunz-Schughart LA, Harris AL, Partridge M, Byrne HM, Kannan P. Reciprocal interactions between tumour cell populations enhance growth and reduce radiation sensitivity in prostate cancer. Commun Biol 2021; 4:6. [PMID: 33398023 PMCID: PMC7782740 DOI: 10.1038/s42003-020-01529-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 11/24/2020] [Indexed: 01/29/2023] Open
Abstract
Intratumoural heterogeneity (ITH) contributes to local recurrence following radiotherapy in prostate cancer. Recent studies also show that ecological interactions between heterogeneous tumour cell populations can lead to resistance in chemotherapy. Here, we evaluated whether interactions between heterogenous populations could impact growth and response to radiotherapy in prostate cancer. Using mixed 3D cultures of parental and radioresistant populations from two prostate cancer cell lines and a predator-prey mathematical model to investigate various types of ecological interactions, we show that reciprocal interactions between heterogeneous populations enhance overall growth and reduce radiation sensitivity. The type of interaction influences the time of regrowth after radiation, and, at the population level, alters the survival and cell cycle of each population without eliminating either one. These interactions can arise from oxygen constraints and from cellular cross-talk that alter the tumour microenvironment. These findings suggest that ecological-type interactions are important in radiation response and could be targeted to reduce local recurrence.
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Affiliation(s)
| | - Warren W Kretzschmar
- School of Engineering Sciences in Chemistry Biotechnology and Health, Department of Gene Technology, Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden
- Center for Hematology and Regenerative Medicine (HERM), Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
- Center for Hematology and Regenerative Medicine (HERM), Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Bostjan Markelc
- CRUK and MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK
| | - Stanley K Liu
- Sunnybrook Research Institute and Departments of Medical Biophysics and Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Leoni A Kunz-Schughart
- OncoRay-National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden and Helmholtz-Zentrum, Dresden, Rossendorf, Germany
- National Center for Tumor Diseases (NCT), Partner Site, Dresden, Germany
| | - Adrian L Harris
- CRUK and MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK
- Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Mike Partridge
- CRUK and MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK
| | - Helen M Byrne
- Mathematical Institute, University of Oxford, Oxford, UK.
| | - Pavitra Kannan
- CRUK and MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK.
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
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Vorgia E, Lamprousi M, Denecke S, Vogelsang K, Geibel S, Vontas J, Douris V. Functional characterization and transcriptomic profiling of a spheroid-forming midgut cell line from Helicoverpa zea (Lepidoptera: Noctuidae). INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2021; 128:103510. [PMID: 33276037 DOI: 10.1016/j.ibmb.2020.103510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/15/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Insect cell lines have been frequently used in insect science research in recent years. Establishment of cell lines from specialized tissues like the lepidopteran midgut is expected to facilitate research efforts towards the understanding of uptake and metabolic properties, as well as the design of assays for use in pesticide discovery. However, the number of available lines from specialized tissues of insects and the level of understanding of the biological processes taking place in insect cells is far behind mammalian systems. In this study we examine two established cell lines of insect midgut origin, investigate their growth parameters and amenability to transfection and genetic manipulation, and test their potential to form spheroid-like 3D structures. Our results indicate that a midgut-derived cell line from Helicoverpa zea, RP-HzGUT-AW1, is amenable to genetic manipulation by transfection with a standard insect expression vector and has excellent ability to form spheroids. To further investigate the differentiation status of this line, we examined for expression of several candidate marker genes from different midgut cell types, enterocytes (ECs), Goblet cells (GCs), enteroendocrine cells (EEs) and intestinal stem cells (ISCs), indicating that both certain ISC and certain differentiated cell markers were present. To acquire a more detailed perspective of the differentiation landscape of the specific cells, we performed an RNAseq analysis of RP-HzGUT-AW1 grown either in 2D or 3D cultures. We hypothesize that RP-HzGUT-AW1 are in an "arrested" developmental stage between ISC and terminal differentiation. Furthermore, an enrichment of stress response and oxidoreductase genes was observed in the spheroid samples while no significant difference was evident in differentiation markers between cells grown in 2D and 3D. These results render RP-HzGUT-AW1 as the most well-characterized insect gut derived cell line so far, and lay the groundwork for future work investigating midgut cell lines application potential.
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Affiliation(s)
- Elena Vorgia
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece
| | - Mantha Lamprousi
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Department of Biology, University of Crete, Vassilika Vouton, 71409, Heraklion, Crete, Greece
| | - Shane Denecke
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece
| | - Kathrin Vogelsang
- Bayer AG, CropScience Division, R&D Pest Control, D-40789 Monheim, Germany
| | - Sven Geibel
- Bayer AG, CropScience Division, R&D Pest Control, D-40789 Monheim, Germany
| | - John Vontas
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, Greece
| | - Vassilis Douris
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Department of Biological Applications and Technology, University of Ioannina, 45110, Ioannina, Greece.
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Seo J, Kim KS, Park JW, Cho JY, Chang H, Fukuda J, Hong KY, Chun YS. Metastasis-on-a-chip reveals adipocyte-derived lipids trigger cancer cell migration via HIF-1α activation in cancer cells. Biomaterials 2020; 269:120622. [PMID: 33385686 DOI: 10.1016/j.biomaterials.2020.120622] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 02/06/2023]
Abstract
Although obesity is a newly considered risk factor for cancer, the mechanisms by which adipocyte-derived metabolites accelerate cancer malignancy have yet to be elucidated. To identify the connection among heterogeneous cell types, conventional methods including Transwell assays or conditioned media (CM) have been used; however, these methods do not fully reflect niche effects in the tumor microenvironment (TME). Here, we established an oxygen permeable polydimethylsiloxane (PDMS)-based three-dimensional (3D) culture system to allow direct attachment between human adipocyte derived stem cells (ADSCs) and cancer cells. By doing so, a physiologically bioactive TME was created, which could be used to reveal further the relationships between different cell types. We found that co-culture of cancer cells with ADSCs resulted in a dispersion phenomenon, and the dispersed spheroid was well matched with the enhanced metastatic potential of cancer cells. Lipid profiling and in vitro migration assays suggested that lipids are the driving force for cancer cell migration via HIF-1α upregulation. In addition, the lipid/HIF-1α axis promoted tumor metastasis in a xenograft mouse model. This study presents an in vitro model of a biomimetic TME and provides new mechanistic insights into the effects of ADSC-released fatty acids on cancer cells as oncometabolites.
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Affiliation(s)
- Jieun Seo
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea; Department of Physiology, Seoul National University College of Medicine, Seoul, 03080, South Korea
| | - Kyeong Seog Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea; Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, 03080, South Korea
| | - Jong-Wan Park
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, South Korea
| | - Joo-Youn Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea; Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, 03080, South Korea
| | - Hak Chang
- Department of Plastic Surgery, Seoul National University Hospital, Seoul, 03080, South Korea
| | - Junji Fukuda
- Faculty of Engineering, Yokohama National University, Yokohama, 240-8501, Japan
| | - Ki Yong Hong
- Department of Plastic and Reconstructive Surgery, Dongguk University Ilsan Hospital, Dongguk University School of Medicine, Goyang, 10326, South Korea
| | - Yang-Sook Chun
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea; Department of Physiology, Seoul National University College of Medicine, Seoul, 03080, South Korea; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, 03080, South Korea.
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Frappart PO, Hofmann TG. Pancreatic Ductal Adenocarcinoma (PDAC) Organoids: The Shining Light at the End of the Tunnel for Drug Response Prediction and Personalized Medicine. Cancers (Basel) 2020; 12:cancers12102750. [PMID: 32987786 PMCID: PMC7598647 DOI: 10.3390/cancers12102750] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Pancreatic ductal adenocarcinoma (PDAC) causes massive medical problems because of late diagnosis and limited responsiveness to standard chemotherapeutic treatments. This makes PDAC one of the major causes of death by cancer. To address this problem, novel tools for early diagnosis and therapy are needed. The recent development of PDAC organoids, which represent micro-scale mini-tumors, offers promising new options for personalized drug-testing based on primary PDAC patient material. This overview article summarizes and discusses the current state-of-the-art in exploiting the organoid technology to improve clinical management of PDAC. Abstract Pancreatic ductal adenocarcinoma (PDAC) represents 90% of pancreatic malignancies. In contrast to many other tumor entities, the prognosis of PDAC has not significantly improved during the past thirty years. Patients are often diagnosed too late, leading to an overall five-year survival rate below 10%. More dramatically, PDAC cases are on the rise and it is expected to become the second leading cause of death by cancer in western countries by 2030. Currently, the use of gemcitabine/nab-paclitaxel or FOLFIRINOX remains the standard chemotherapy treatment but still with limited efficiency. There is an urgent need for the development of early diagnostic and therapeutic tools. To this point, in the past 5 years, organoid technology has emerged as a revolution in the field of PDAC personalized medicine. Here, we are reviewing and discussing the current technical and scientific knowledge on PDAC organoids, their future perspectives, and how they can represent a game change in the fight against PDAC by improving both diagnosis and treatment options.
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Tang J, Wang L, Loredo A, Cole C, Xiao H. Single-atom replacement as a general approach towards visible-light/near-infrared heavy-atom-free photosensitizers for photodynamic therapy. Chem Sci 2020; 11:6701-6708. [PMID: 32953031 PMCID: PMC7473402 DOI: 10.1039/d0sc02286a] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 05/30/2020] [Indexed: 12/31/2022] Open
Abstract
Photodynamic therapy has become an emerging strategy for the treatment of cancer. This technology relies on the development of photosensitizers (PSs) that convert molecular oxygen to cytotoxic reactive oxygen species upon exposure to light. In this study, we have developed a facile and general strategy for obtaining visible light/near-infrared-absorbing PSs by performing a simple sulfur-for-oxygen replacement within existing fluorophores. Thionation of carbonyl groups within existing fluorophore cores leads to an improvement of the singlet oxygen quantum yield and molar absorption coefficient at longer wavelengths (deep to 600-800 nm). Additionally, these thio-based PSs lack dark cytotoxicity but exhibit significant phototoxicity against monolayer cancer cells and 3D multicellular tumor spheroids with IC50 in the micromolar range. To achieve tumor-specific delivery, we have conjugated these thio-based PSs to an antibody and demonstrated their tumor-specific therapeutic activity.
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Affiliation(s)
- Juan Tang
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Lushun Wang
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Axel Loredo
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Carson Cole
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
| | - Han Xiao
- Department of Chemistry , Rice University , 6100 Main Street , Houston , Texas 77005 , USA .
- Department of Biosciences , Rice University , 6100 Main Street , Houston , Texas 77005 , USA
- Department of Bioengineering , Rice University , 6100 Main Street , Houston , Texas 77005 , USA
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Argenziano M, Foglietta F, Canaparo R, Spagnolo R, Della Pepa C, Caldera F, Trotta F, Serpe L, Cavalli R. Biological Effect Evaluation of Glutathione-Responsive Cyclodextrin-Based Nanosponges: 2D and 3D Studies. Molecules 2020; 25:molecules25122775. [PMID: 32560204 PMCID: PMC7355809 DOI: 10.3390/molecules25122775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023] Open
Abstract
This study aims to evaluate the bioeffects of glutathione-responsive β-cyclodextrin-based nanosponges (GSH-NSs) on two- (2D) and three-dimensional (3D) cell cultures. The bioeffects of two types of GSH-NS formulations, with low (GSH-NS B) and high (GSH-NS D) disulfide-bond content, were evaluated on 2D colorectal (HCT116 and HT-29) and prostatic (DU-145 and PC3) cancer cell cultures. In particular, the cellular uptake of GSH-NS was evaluated, as their effects on cell growth, mitochondrial activity, membrane integrity, cell cycle distribution, mRNA expression, and reactive oxygen species production. The effect of GSH-NSs on cell growth was also evaluated on multicellular spheroids (MCS) and a comparison of the GSH-NS cell growth inhibitory activity, in terms of inhibition concentration (IC)50 values, was performed between 2D and 3D cell cultures. A significant decrease in 2D cell growth was observed at high GSH-NS concentrations, with the formulation with a low disulfide-bond content, GSH-NS B, being more cytotoxic than the formulation with a high disulfide-bond content, GSH-NS D. The cell growth decrease induced by GSH-NS was owing to G1 cell cycle arrest. Moreover, a significant down-regulation of mRNA expression of the cyclin genes CDK1, CDK2, and CDK4 and up-regulation of mRNA expression of the cyclin inhibitor genes CDKN1A and CDKN2A were observed. On the other hand, a significant decrease in MCS growth was also observed at high GSH-NS concentrations, but not influenced by the nanosponge disulfide-bond content, with the MCS IC50 values being significantly higher than those obtained on 2D cell cultures. GSH-NSs are suitable nanocarries as they provoke limited cellular effects, as cell cycle arrest only occurred at concentrations significantly higher than those used for drug delivery.
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Affiliation(s)
- Monica Argenziano
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Federica Foglietta
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Roberto Canaparo
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Rita Spagnolo
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Carlo Della Pepa
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Fabrizio Caldera
- Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy; (F.C.); (F.T.)
| | - Francesco Trotta
- Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy; (F.C.); (F.T.)
| | - Loredana Serpe
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Torino, Via Pietro Giuria 9, 10125 Torino, Italy; (M.A.); (F.F.); (R.C.); (R.S.); (C.D.P.); (L.S.)
- Correspondence: ; Tel.: +39-011-670-7190; Fax: +39-011-670-7162
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Ozturk S, Gorgun C, Gokalp S, Vatansever S, Sendemir A. Development and characterization of cancer stem cell-based tumoroids as an osteosarcoma model. Biotechnol Bioeng 2020; 117:2527-2539. [PMID: 32391924 DOI: 10.1002/bit.27381] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/04/2020] [Accepted: 05/07/2020] [Indexed: 12/24/2022]
Abstract
Three-dimensional (3D) cancer tumor models are becoming vital approaches for high-throughput drug screening, drug targeting, development of novel theranostic systems, and personalized medicine. Yet, it is becoming more evident that the tumor progression and metastasis is fueled by a subpopulation of stem-like cells within the tumor that are also called cancer stem cells (CSCs). This study aimed to develop a tumoroid model using CSCs. For this purpose CD133+ cells were isolated from SaOS-2 osteosarcoma cell line with magnetic-activated cell sorting. To evaluate tumoroid formation ability, the cells were incubated in different cell numbers in agar gels produced by 3D Petri Dish® method. Subsequently, CD133+ cells and CD133- cells were co-cultured to investigate CD133+ cell localization in tumoroids. The characterization of tumoroids was performed using Live&Dead staining, immunohistochemistry, and quantitative polymerase chain reaction analysis. The results showed that, CD133+ , CD133- and SaOS-2 cells were all able to form 3D tumoroids regardless of the initial cell number, but, while 72 hr were needed for CD133+ cells to self-assemble, 24 hr were enough for CD133- and SaOS-2 cells. CD133+ cells were located within tumoroids randomly with high cell viability. Finally, when compared to two-dimensional (2D) cultures, there were 5.88, 4.14, 6.95, and 1.68-fold higher messenger RNA expressions for Sox2, OCT3/4, Nanog, and Nestin, respectively, in CD133+ cells that were cultured within 3D tumoroids, showing longer maintenance of stem cell phenotype in 3D, that can allow more relevant screening and targeting efficiency in pharmaceutical testing. It was concluded that CSC-based tumoroids are propitious as 3D tumor models to fill the gap between conventional 2D in vitro culture and in vivo animal experiments for cancer research.
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Affiliation(s)
- Sukru Ozturk
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Bioengineering Division, Institute for Graduate Studies in Science and Engineering, Hacettepe University, Ankara, Turkey.,Department of Biomedical Technologies, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey
| | - Cansu Gorgun
- Department of Biomedical Technologies, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey.,Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Sevtap Gokalp
- Department of Histology and Embryology, Faculty of Medicine, Celal Bayar University, Manisa, Turkey.,Department of Histology and Embryology, Faculty of Medicine, Maltepe University, Istanbul, Turkey
| | - Seda Vatansever
- Department of Histology and Embryology, Faculty of Medicine, Celal Bayar University, Manisa, Turkey.,Research Center of Experimental Health Sciences (DESAM), Near East University, Mersin, Turkey
| | - Aylin Sendemir
- Department of Biomedical Technologies, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey.,Department of Bioengineering, Faculty of Engineering, Ege University, Izmir, Turkey
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Chao JT, Hollman R, Meyers WM, Meili F, Matreyek KA, Dean P, Fowler DM, Haas K, Roskelley CD, Loewen CJR. A Premalignant Cell-Based Model for Functionalization and Classification of PTEN Variants. Cancer Res 2020; 80:2775-2789. [PMID: 32366478 DOI: 10.1158/0008-5472.can-19-3278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/16/2019] [Accepted: 04/23/2020] [Indexed: 11/16/2022]
Abstract
As sequencing becomes more economical, we are identifying sequence variations in the population faster than ever. For disease-associated genes, it is imperative that we differentiate a sequence variant as either benign or pathogenic, such that the appropriate therapeutic interventions or surveillance can be implemented. PTEN is a frequently mutated tumor suppressor that has been linked to the PTEN hamartoma tumor syndrome. Although the domain structure of PTEN and the functional impact of a number of its most common tumor-linked mutations have been characterized, there is a lack of information about many recently identified clinical variants. To address this challenge, we developed a cell-based assay that utilizes a premalignant phenotype of normal mammary epithelial cells lacking PTEN. We measured the ability of PTEN variants to rescue the spheroid formation phenotype of PTEN-/- MCF10A cells maintained in suspension. As proof of concept, we functionalized 47 missense variants using this assay, only 19 of which have clear classifications in ClinVar. We utilized a machine learning model trained with annotated genotypic data to classify variants as benign or pathogenic based on our functional scores. Our model predicted with high accuracy that loss of PTEN function was indicative of pathogenicity. We also determined that the pathogenicity of certain variants may have arisen from reduced stability of the protein product. Overall, this assay outperformed computational predictions, was scalable, and had a short run time, serving as an ideal alternative for annotating the clinical significance of cancer-associated PTEN variants. SIGNIFICANCE: Combined three-dimensional tumor spheroid modeling and machine learning classifies PTEN missense variants, over 70% of which are currently listed as variants of uncertain significance. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/13/2775/F1.large.jpg.
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Affiliation(s)
- Jesse T Chao
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Rocio Hollman
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Warren M Meyers
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Fabian Meili
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Kenneth A Matreyek
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.,Department of Genome Sciences, University of Washington, Seattle, Washington
| | - Pamela Dean
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Douglas M Fowler
- Department of Genome Sciences, University of Washington, Seattle, Washington.,Department of Bioengineering, University of Washington, Seattle, Washington
| | - Kurt Haas
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Calvin D Roskelley
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada
| | - Christopher J R Loewen
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, Canada.
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Jeon JH, Yun BG, Lim MJ, Kim SJ, Lim MH, Lim JY, Park SH, Kim SW. Rapid Cartilage Regeneration of Spheroids Composed of Human Nasal Septum-Derived Chondrocyte in Rat Osteochondral Defect Model. Tissue Eng Regen Med 2020; 17:81-90. [PMID: 31983036 DOI: 10.1007/s13770-019-00231-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/14/2019] [Accepted: 11/22/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Cell-based therapies have been studied for articular cartilage regeneration. Articular cartilage defects have little treatments because articular cartilage was limited regenerative capacity. Damaged articular cartilage is difficult to obtain a successful therapeutic effect. In additionally these articular cartilage defects often cause osteoarthritis. Chondrocyte implantation is a widely available therapy used for regeneration of articular cartilage because this tissue has poor repair capacity after injury. Human nasal septum-drived chondrocytes (hNCs) from the septum show greater proliferation ability and chondrogenic capacity than human articular chondrocytes (hACs), even across different donors with different ages. Moreover, the chondrogenic properties of hNCs can be maintained after extensive culture expansion. METHODS In this study, 2 dimensional (2D) monolayer cultured hNCs (hNCs-2D) and 3 dimensional (3D) spheroids cultured hNCs (hNCs-3D) were examined for chondrogenic capacity in vitro by PCR and immunofluorescence staining for chondrogenic marker, cell survival during cultured and for cartilage regeneration ability in vivo in a rat osteochondral defect model. RESULTS hNCs-3D showed higher viability and more uniform morphology than 3D spheroids cultured hACs (hACs-3D) in culture. hNCs-3D also showed greater expression levels of the chondrocyte-specific marker Type II collagen (COL2A1) and sex-determining region Y (SRY)-box 9 (SOX9) than hNCs-2D. hNCs-3D also expressed chondrogenic markers in collagen. Specially, in the osteochondral defect model, implantation of hNCs-3D led to greater chondrogenic repair of focal cartilage defects in rats than implantation of hNCs-2D. CONCLUSION These data suggest that hNCs-3D are valuable therapeutic agents for repair and regeneration of cartilage defects.
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Affiliation(s)
- Jung Ho Jeon
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Byeong Gon Yun
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Min Jae Lim
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Seok Jung Kim
- Orthopedic Department, Uijeongbu St. Mary's Hospital, 271 Cheonbo-ro, Uijeongbu-si, Gyeonggi-do, 11765, Republic of Korea
| | - Mi Hyun Lim
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Jung Yeon Lim
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Sun Hwa Park
- Department of Biomedicine and Health Science, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Sung Won Kim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Korea.
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Emerging Roles of Cancer Stem Cells in Bladder Cancer Progression, Tumorigenesis, and Resistance to Chemotherapy: A Potential Therapeutic Target for Bladder Cancer. Cells 2020; 9:cells9010235. [PMID: 31963556 PMCID: PMC7016964 DOI: 10.3390/cells9010235] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/11/2020] [Accepted: 01/15/2020] [Indexed: 12/21/2022] Open
Abstract
Bladder cancer (BC) is a complex and highly heterogeneous stem cell disease associated with high morbidity and mortality rates if it is not treated properly. Early diagnosis with personalized therapy and regular follow-up are the keys to a successful outcome. Cancer stem cells (CSCs) are the leading power behind tumor growth, with the ability of self-renewal, metastasis, and resistance to conventional chemotherapy. The fast-developing CSC field with robust genome-wide screening methods has found a platform for establishing more reliable therapies to target tumor-initiating cell populations. However, the high heterogeneity of the CSCs in BC disease remains a large issue. Therefore, in the present review, we discuss the various types of bladder CSC heterogeneity, important regulatory pathways, roles in tumor progression and tumorigenesis, and the experimental culture models. Finally, we describe the current stem cell-based therapies for BC disease.
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41
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Monteiro MV, Gaspar VM, Ferreira LP, Mano JF. Hydrogel 3D in vitro tumor models for screening cell aggregation mediated drug response. Biomater Sci 2020; 8:1855-1864. [DOI: 10.1039/c9bm02075f] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hydrogel-based 3D in vitro models comprising tumor ECM-mimetic biomaterials exhibit differential responses to therapeutics according to cancer cells cellular aggregation state.
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Affiliation(s)
- Maria V. Monteiro
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - Vítor M. Gaspar
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - Luís P. Ferreira
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - João F. Mano
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
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42
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Azharuddin M, Roberg K, Dhara AK, Jain MV, Darcy P, Hinkula J, Slater NKH, Patra HK. Dissecting multi drug resistance in head and neck cancer cells using multicellular tumor spheroids. Sci Rep 2019; 9:20066. [PMID: 31882620 PMCID: PMC6934860 DOI: 10.1038/s41598-019-56273-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 12/04/2019] [Indexed: 02/07/2023] Open
Abstract
One of the hallmarks of cancers is their ability to develop resistance against therapeutic agents. Therefore, developing effective in vitro strategies to identify drug resistance remains of paramount importance for successful treatment. One of the ways cancer cells achieve drug resistance is through the expression of efflux pumps that actively pump drugs out of the cells. To date, several studies have investigated the potential of using 3-dimensional (3D) multicellular tumor spheroids (MCSs) to assess drug resistance; however, a unified system that uses MCSs to differentiate between multi drug resistance (MDR) and non-MDR cells does not yet exist. In the present report we describe MCSs obtained from post-diagnosed, pre-treated patient-derived (PTPD) cell lines from head and neck squamous cancer cells (HNSCC) that often develop resistance to therapy. We employed an integrated approach combining response to clinical drugs and screening cytotoxicity, monitoring real-time drug uptake, and assessing transporter activity using flow cytometry in the presence and absence of their respective specific inhibitors. The report shows a comparative response to MDR, drug efflux capability and reactive oxygen species (ROS) activity to assess the resistance profile of PTPD MCSs and two-dimensional (2D) monolayer cultures of the same set of cell lines. We show that MCSs provide a robust and reliable in vitro model to evaluate clinical relevance. Our proposed strategy can also be clinically applicable for profiling drug resistance in cancers with unknown resistance profiles, which consequently can indicate benefit from downstream therapy.
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Affiliation(s)
- Mohammad Azharuddin
- Department of Clinical and Experimental Medicine (IKE), Linköping University, Linköping, Sweden
| | - Karin Roberg
- Department of Clinical and Experimental Medicine (IKE), Linköping University, Linköping, Sweden.
- Department of Otorhinolaryngology in Linköping, Anaesthetics, Operations and Specialty Surgery Center, Region Östergötland, Östergötland, Sweden.
| | - Ashis Kumar Dhara
- Department of Electrical Engineering, National Institute of Technology Durgapur, Durgapur, India
| | - Mayur Vilas Jain
- Division of Molecular Medicine and Gene Therapy, Lund University, Lund, Sweden
| | - Padraig Darcy
- Department of Medical and Health Sciences (IMH), Division of Drug Research (LÄFO), Linköping University, Linköping, Sweden
| | - Jorma Hinkula
- Department of Clinical and Experimental Medicine (IKE), Linköping University, Linköping, Sweden
| | - Nigel K H Slater
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Hirak K Patra
- Department of Clinical and Experimental Medicine (IKE), Linköping University, Linköping, Sweden.
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK.
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43
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Leenhardt R, Camus M, Mestas JL, Jeljeli M, Abou Ali E, Chouzenoux S, Bordacahar B, Nicco C, Batteux F, Lafon C, Prat F. Ultrasound-induced Cavitation enhances the efficacy of Chemotherapy in a 3D Model of Pancreatic Ductal Adenocarcinoma with its microenvironment. Sci Rep 2019; 9:18916. [PMID: 31831785 PMCID: PMC6908636 DOI: 10.1038/s41598-019-55388-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/27/2019] [Indexed: 12/13/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is supported by a complex microenvironment whose physical contribution to chemoresistance could be overcome by ultrasound (US) therapy. This study aims to investigate the ability of US-induced inertial cavitation in association with chemotherapy to alter tumor cell viability via microenvironment disruption. For this purpose, we used a 3D-coculture PDAC model partially mimicking the tumor and its microenvironment. Coculture spheroids combining DT66066 cells isolated from KPC-transgenic mice and murine embryonic fibroblasts (iMEF) were obtained by using a magnetic nanoshuttle method. Spheroids were exposed to US with incremental inertial cavitation indexes. Conditions studied included control, gemcitabine, US-cavitation and US-cavitation + gemcitabine. Spheroid viability was assessed by the reduction of resazurin and flow cytometry. The 3D-coculture spheroid model incorporated activated fibroblasts and produced type 1-collagen, thus providing a partial miniature representation of tumors with their microenvironment. Main findings were: (a) Gemcitabine (5 μM) was significantly less cytotoxic in the presence of KPC/iMEFs spheroids compared with KPC (fibroblast-free) spheroids; (b) US-induced inertial cavitation combined with Gemcitabine significantly decreased spheroid viability compared to Gemcitabine alone; (c) both cavitation and chemotherapy affected KPC cell viability but not that of fibroblasts, confirming the protective role of the latter vis-à-vis tumor cells. Gemcitabine toxicity is enhanced when cocultured spheroids of KPC and iMEF are exposed to US-cavitation. Although the model used is only a partial representation of PDAC, this experience supports the hypothesis that US-inertial cavitation can enhance drug penetration and cytotoxicity by disrupting PDAC microenvironment.
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MESH Headings
- Animals
- Carcinoma, Pancreatic Ductal/metabolism
- Carcinoma, Pancreatic Ductal/pathology
- Carcinoma, Pancreatic Ductal/therapy
- Cell Line, Tumor
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/pharmacology
- Mice
- Mice, Transgenic
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Neoplasms, Experimental/therapy
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/pathology
- Pancreatic Neoplasms/therapy
- Spheroids, Cellular/metabolism
- Spheroids, Cellular/pathology
- Tumor Microenvironment/drug effects
- Ultrasonic Therapy
- Gemcitabine
- Pancreatic Neoplasms
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Affiliation(s)
- R Leenhardt
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - M Camus
- Sorbonne University, APHP, Saint-Antoine Hospital, Paris, France
| | - J L Mestas
- LabTAU, INSERM U1032, Centre Léon Bérard, Université-Lyon 1, Lyon, 69003, Lyon, France
| | - M Jeljeli
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - E Abou Ali
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - S Chouzenoux
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - B Bordacahar
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - C Nicco
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - F Batteux
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France
| | - C Lafon
- LabTAU, INSERM U1032, Centre Léon Bérard, Université-Lyon 1, Lyon, 69003, Lyon, France
| | - F Prat
- University of Paris Descartes, INSERM U1016, Cochin Institute, Paris, France.
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44
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Cell alignment and accumulation using acoustic nozzle for bioprinting. Sci Rep 2019; 9:17774. [PMID: 31780803 PMCID: PMC6883046 DOI: 10.1038/s41598-019-54330-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 11/08/2019] [Indexed: 01/12/2023] Open
Abstract
Bioprinting could spatially align various cells in high accuracy to simulate complex and highly organized native tissues. However, the uniform suspension and low concentration of cells in the bioink and subsequently printed construct usually results in weak cell-cell interaction and slow proliferation. Acoustic manipulation of biological cells during the extrusion-based bioprinting by a specific structural vibration mode was proposed and evaluated. Both C2C12 cells and human umbilical vein endothelial cells (HUVECs) could be effectively and quickly accumulated at the center of the cylindrical tube and consequently the middle of the printed construct with acoustic excitation at the driving frequency of 871 kHz. The full width at half maximum (FWHM) of cell distributions fitted with a Gaussian curve showed a significant reduction by about 2.2 fold in the printed construct. The viability, morphology, and differentiation of these cells were monitored and compared. C2C12 cells that were undergone the acoustic excitation had nuclei oriented densely within ±30° and decreased circularity index by 1.91 fold or significant cell elongation in the printing direction. In addition, the formation of the capillary-like structure in the HUVECs construct was found. The number of nodes, junctions, meshes, and branches of HUVECs on day 14 was significantly greater with acoustic excitation for the enhanced neovascularization. Altogether, the proposed acoustic technology can satisfactorily accumulate/pattern biological cells in the printed construct at high biocompatibility. The enhanced cell interaction and differentiation could subsequently improve the performance and functionalities of the engineered tissue samples.
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45
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Roovers S, Deprez J, Priwitaningrum D, Lajoinie G, Rivron N, Declercq H, De Wever O, Stride E, Le Gac S, Versluis M, Prakash J, De Smedt SC, Lentacker I. Sonoprinting liposomes on tumor spheroids by microbubbles and ultrasound. J Control Release 2019; 316:79-92. [PMID: 31676384 DOI: 10.1016/j.jconrel.2019.10.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 12/12/2022]
Abstract
Ultrasound-triggered drug-loaded microbubbles have great potential for drug delivery due to their ability to locally release drugs and simultaneously enhance their delivery into the target tissue. We have recently shown that upon applying ultrasound, nanoparticle-loaded microbubbles can deposit nanoparticles onto cells grown in 2D monolayers, through a process that we termed "sonoprinting". However, the rigid surfaces on which cell monolayers are typically growing might be a source of acoustic reflections and aspherical microbubble oscillations, which can influence microbubble-cell interactions. In the present study, we aim to reveal whether sonoprinting can also occur in more complex and physiologically relevant tissues, by using free-floating 3D tumor spheroids as a tissue model. We show that both monospheroids (consisting of tumor cells alone) and cospheroids (consisting of tumor cells and fibroblasts, which produce an extracellular matrix) can be sonoprinted. Using doxorubicin-liposome-loaded microbubbles, we show that sonoprinting allows to deposit large amounts of doxorubicin-containing liposomes to the outer cell layers of the spheroids, followed by doxorubicin release into the deeper layers of the spheroids, resulting in a significant reduction in cell viability. Sonoprinting may become an attractive approach to deposit drug patches at the surface of tissues, thereby promoting the delivery of drugs into target tissues.
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Affiliation(s)
- S Roovers
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - J Deprez
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - D Priwitaningrum
- Targeted Therapeutics, Department of Biomaterials Science and Technology, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - G Lajoinie
- Physics of Fluids Group, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - N Rivron
- Institute of Molecular Biotechnology, Austrian Academy of Sciences, Vienna, Austria
| | - H Declercq
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium; Tissue Engineering Group, Department of Human Structure and Repair, Ghent University, Belgium
| | - O De Wever
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium; Laboratory Experimental Cancer Research (LECR), Ghent University, Ghent, Belgium
| | - E Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - S Le Gac
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - M Versluis
- Physics of Fluids Group, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - J Prakash
- Targeted Therapeutics, Department of Biomaterials Science and Technology, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - S C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
| | - I Lentacker
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
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46
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Chen MB, Kamm RD, Moeendarbary E. Engineered Models of Metastasis with Application to Study Cancer Biomechanics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1092:189-207. [PMID: 30368754 DOI: 10.1007/978-3-319-95294-9_10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three-dimensional complex biomechanical interactions occur from the initial steps of tumor formation to the later phases of cancer metastasis. Conventional monolayer cultures cannot recapitulate the complex microenvironment and chemical and mechanical cues that tumor cells experience during their metastatic journey, nor the complexity of their interactions with other, noncancerous cells. As alternative approaches, various engineered models have been developed to recapitulate specific features of each step of metastasis with tunable microenvironments to test a variety of mechanistic hypotheses. Here the main recent advances in the technologies that provide deeper insight into the process of cancer dissemination are discussed, with an emphasis on three-dimensional and mechanical factors as well as interactions between multiple cell types.
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Affiliation(s)
- Michelle B Chen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Roger D Kamm
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Emad Moeendarbary
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Mechanical Engineering, University College London, London, UK
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47
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Hari N, Patel P, Ross J, Hicks K, Vanholsbeeck F. Optical coherence tomography complements confocal microscopy for investigation of multicellular tumour spheroids. Sci Rep 2019; 9:10601. [PMID: 31332221 PMCID: PMC6646385 DOI: 10.1038/s41598-019-47000-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/05/2019] [Indexed: 01/01/2023] Open
Abstract
Knowledge of optical properties, such as the refractive index (RI), of biological tissues is important in optical imaging, as they influence the distribution and propagation of light in tissue. To accurately study the response of cancerous cells to drugs, optimised imaging protocols are required. This study uses a simple custom-built spectral domain optical coherence tomography (OCT) system to conduct RI measurements of multicellular spheroids, three-dimensional (3D) in-vitro culture systems, of the cell line HCT116. The spheroid RIs are compared to study the effect of growth over time. To improve confocal microscopy imaging protocols, two immersion media (glycerol and ScaleView-A2) matching the spheroid RIs were trialled, with the aim to reduce the RI mismatch between the spheroid and the immersion medium and thus improve imaging depth with confocal microscopy. ScaleView-A2 (n = 1.380) aided in achieving greater depths of imaging of the multicellular spheroids under confocal microscopy. This improvement in imaging depth confirmed the utility of our RI measurements, proving the promising outlook of OCT as a complementary tool to microscopy in cancer research.
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Affiliation(s)
- Neelam Hari
- Department of Physics, University of Auckland, Auckland, 1010, New Zealand.,The Dodd-Walls Centre for Photonic and Quantum Technologies, University of Auckland, Auckland, New Zealand
| | - Priyanka Patel
- Auckland Cancer Society Research Centre, University of Auckland, Auckland, New Zealand
| | - Jacqueline Ross
- Biomedical Imaging Research Unit, Department of Anatomy and Medical Imaging, University of Auckland, Auckland, New Zealand
| | - Kevin Hicks
- Auckland Cancer Society Research Centre, University of Auckland, Auckland, New Zealand
| | - Frédérique Vanholsbeeck
- Department of Physics, University of Auckland, Auckland, 1010, New Zealand. .,The Dodd-Walls Centre for Photonic and Quantum Technologies, University of Auckland, Auckland, New Zealand.
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48
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Del Bano J, Florès-Florès R, Josselin E, Goubard A, Ganier L, Castellano R, Chames P, Baty D, Kerfelec B. A Bispecific Antibody-Based Approach for Targeting Mesothelin in Triple Negative Breast Cancer. Front Immunol 2019; 10:1593. [PMID: 31354732 PMCID: PMC6636429 DOI: 10.3389/fimmu.2019.01593] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/26/2019] [Indexed: 11/13/2022] Open
Abstract
Triple negative breast cancers (TNBC) remain a major medical challenge due to poor prognosis and limited treatment options. Mesothelin is a glycosyl-phosphatidyl inositol-linked membrane protein with restricted normal expression and high level expression in a large proportion of TNBC, thus qualifying as an attractive target. Its overexpression in breast tumors has been recently correlated with a decreased disease-free survival and an increase of distant metastases. The objective of the study was to investigate the relevance of a bispecific antibody-based immunotherapy approach through mesothelin targeting and CD16 engagement using a Fab-like bispecific format (MesobsFab). Using two TNBC cell lines with different level of surface mesothelin and epithelial/mesenchymal phenotypes, we showed that, in vitro, MesobsFab promotes the recruitment and penetration of NK cells into tumor spheroids, induces potent dose-dependent cell-mediated cytotoxicity of mesothelin-positive tumor cells, cytokine secretion, and decreases cell invasiveness. MesobsFab was able to induce cytotoxicity in resting human peripheral blood mononuclear cells (PBMC), mainly through its NK cells-mediated antibody dependent cell cytotoxicity (ADCC) activity. In vivo, the anti-tumor effect of MesobsFab depends upon a threshold of MSLN density on target cells. Collectively our data support mesothelin as a relevant therapeutic target for the subset of TNBC that overexpresses mesothelin characterized by a low overall and disease-free survival as well as the potential of MesobsFab as antibody-based immunotherapeutics.
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Affiliation(s)
- Joanie Del Bano
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Rémy Florès-Florès
- Aix Marseille Univ, CNRS, Institut de Biologie du Développement de Marseille, UMR7288, Marseille, France
| | - Emmanuelle Josselin
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Armelle Goubard
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Laetitia Ganier
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Rémy Castellano
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Patrick Chames
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Daniel Baty
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
| | - Brigitte Kerfelec
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmette, CRCM, Marseille, France
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49
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Tucker LH, Hamm GR, Sargeant RJE, Goodwin RJA, Mackay CL, Campbell CJ, Clarke DJ. Untargeted Metabolite Mapping in 3D Cell Culture Models Using High Spectral Resolution FT-ICR Mass Spectrometry Imaging. Anal Chem 2019; 91:9522-9529. [DOI: 10.1021/acs.analchem.9b00661] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lulu H. Tucker
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
| | - Gregory R. Hamm
- Pathology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB4 0WG, United Kingdom
| | - Rebecca J. E. Sargeant
- Pathology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB4 0WG, United Kingdom
| | - Richard J. A. Goodwin
- Pathology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB4 0WG, United Kingdom
| | - C. Logan Mackay
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
| | - Colin J. Campbell
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
| | - David J. Clarke
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
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50
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Shahin-Shamsabadi A, Selvaganapathy PR. A rapid biofabrication technique for self-assembled collagen-based multicellular and heterogeneous 3D tissue constructs. Acta Biomater 2019; 92:172-183. [PMID: 31085365 DOI: 10.1016/j.actbio.2019.05.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 04/22/2019] [Accepted: 05/09/2019] [Indexed: 01/09/2023]
Abstract
Although monolayer cell culture models are considered as gold standard for in vitro modeling of pathophysiological events, they cannot reconstruct in vivo like gradient of gases and nutrients and lack proper cell-cell and cell-matrix interactions. Spherical cellular aggregates, otherwise known as multicellular spheroids, are widely used as three-dimensional in vitro models to mimic natural in vivo cellular microenvironment for applications such as drug screening. Although very useful, the previously established techniques are limited to low cell numbers, their processes are usually slow, and sometimes show limitations in terms of the cell type that can be used. Here, a versatile technique based on rapid self-assembly of cells and extracellular matrix material in different shapes using microfabricated molds is introduced to form multicellular tissue constructs. The self-assembly process takes less than 6 h and produces a mechanically robust tissue construct that could be handled easily. We demonstrate that a variety of shapes including spherical, cuboidal, dumbbell- and cross-like shapes could be fabricated using this approach. Interestingly, the structures formed with non-spherical shapes were able to retain that shape even after removal from the molds and during long term cell culture. This versatile approach is applicable to a variety of cell types (breast cancer cell lines MCF-7, MDA-MB-321, Hs-578T; osteosarcoma cell line SaOS-2; endothelial cell line HUVEC) as well as a range of cell numbers (104-106). Furthermore, we also show that the constructs could be spatially patterned to position various cell types in a precisely controlled way. Such heterogeneous constructs that are formed provide physiologically relevant cell densities, 3D structure as well as close positioning of multiple types of cells that are not possible using other fabrication approaches. This fabrication approach will find significant applications in developing 3D cell culture models for drug discovery as well as tissue grafts for implantation. STATEMENT OF SIGNIFICANCE: In this manuscript we describe a method for rapid formation of tissue constructs (6 h as opposed to several days for current state of art methods). We also identify the essential factors needed for such a rapid consolidation into a construct. We demonstrate the ability to form non-spherical constructs of various shapes that retain their shape over long term as opposed to those formed with current state of art that lose their shape during long time cell culture. We also show the ability to form precise heterogeneous constructs consisting of multiple cell types and with well-defined interfaces that are not possible with current state of art methods. This method could be used with a wide variety of cell types and are mechanically robust within 6 h to be handled with tweezers. We believe that such multicellular, heterogeneous constructs would be of significant use to biologists and drug discovery researchers investigating mechanisms involved in diseases processes or the effect of drug on them.
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Affiliation(s)
| | - P Ravi Selvaganapathy
- School of Biomedical Engineering, McMaster University, Canada; Department of Mechanical Engineering, McMaster University, Canada.
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