1
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Han X, Zhang Q, He H, Zhao Q, Li G. Reflow-molded deep concave microwell arrays for robust and large-scale production of embryoid bodies. LAB ON A CHIP 2023; 23:4378-4389. [PMID: 37695312 DOI: 10.1039/d3lc00504f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Embryonic stem cell (ESC)-derived aggregates, called embryoid bodies (EBs), are powerful in vitro models used to study human development and disease. However, the cost-effective and large-scale production of homogeneous EBs still remains a challenge. Here, we report a rapid, straightforward method for fabricating closely arrayed deep concave microwells, enabling the mass production of uniform EBs from single cell suspensions. By simply combining micromilling, caramel replica molding, and thermal reflow, we generate convex micromolds with high aspect ratios and excellent surface smoothness. Benefitting from the nature of reflow, this method can produce rounded bottom polydimethylsiloxane (PDMS) microwells, which are not easily achieved with standard soft lithography techniques but critical to producing spherical EBs. To achieve optimal concave microwells, we investigated the effect of thermal reflow temperature and time on the surface smoothness and roundness of the finished microwells. In addition, to further improve the utility of this method, we also investigated the effect of microwell aspect ratio (AR) on the loss of EBs during medium manipulation. The capability of this deep concave microwell system was validated by rapidly generating a large number of human embryonic stem cell (hESC)-derived EBs and then efficiently differentiating them into a cardiac lineage. The proposed fabrication method and deep concave microwell platform are highly practical, and thus will benefit the mass production of EBs for potential tissue regeneration and cell therapy applications.
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Affiliation(s)
- Xue Han
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defense Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China.
| | - Qi Zhang
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defense Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China.
| | - Hui He
- Institute of Neuroscience, Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qiang Zhao
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defense Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China.
| | - Gang Li
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defense Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China.
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2
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Xie Y, Pan R, Wu S, Yang X, Chen F, Sun W, Yu L. Cell repelling agar@paper interface assisted probing of the tumor spheroids infiltrating natural killer cells. BIOMATERIALS ADVANCES 2023; 153:213507. [PMID: 37354744 DOI: 10.1016/j.bioadv.2023.213507] [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: 03/28/2023] [Revised: 06/03/2023] [Accepted: 06/07/2023] [Indexed: 06/26/2023]
Abstract
Scaffold-based culture is one of the effective methods to resemble three-dimensional (3D) cells model in vitro. An agar@lens paper hybrid scaffold was prepared by one-pot dip-coating. The lens paper's cellulose fiber networks are the scaffold's backbone. The agar gel seized the gaps between the fibrous structures that can improve the paper scaffold's optical transparency and prevent cells from spreading on the scaffold. The SEM and light microscope images showed that the agar gel on the bottom of the paper and the cellulose fiber of the paper formed micro-well structures. Without staining, the cells growing on the agar@paper scaffold can be directly observed under a light microscope. Cells aggregated between the cellulose fibers and formed spheroids within 24 h. The cell spheroids can be non-enzymatically retrieved from the agar@paper scaffold because of the cell-repelling property of agar. The agar@paper scaffold was applied for co-culturing tumor cells (MDA-MB-231, DU 145) and natural killer cells (NKs, NK-92). Using the agar@paper scaffolds, the tumor-infiltrating NKs can be separated from floating NKs that did not attack the tumor spheroids. The effect of NKs infiltrating on tumor spheroids size was characterized. The results showed that NKs attacking the spheroids grown on agar@paper scaffold can be readily tracked because of the improved optical transparency. Higher NKs: tumor cells ratio resulted in a high percentage of tumor infiltrating NKs. The separated NKs can be further tested to reveal their biological characteristics. Both agar and lens paper is accessible for most biological labs, highlighting the potential of agar@paper scaffold in 3D culture.
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Affiliation(s)
- Yuanyuan Xie
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Rong Pan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Shiming Wu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Xiaoyan Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Feng Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Wei Sun
- College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China
| | - Ling Yu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, PR China.
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3
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Saravanou SF, Ioannidis K, Dimopoulos A, Paxinou A, Kounelaki F, Varsami SM, Tsitsilianis C, Papantoniou I, Pasparakis G. Dually crosslinked injectable alginate-based graft copolymer thermoresponsive hydrogels as 3D printing bioinks for cell spheroid growth and release. Carbohydr Polym 2023; 312:120790. [PMID: 37059530 DOI: 10.1016/j.carbpol.2023.120790] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 03/01/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
In this work a dual crosslinked network based on sodium alginate graft copolymer, bearing poly(N-isopropylacrylamide-co-N-tert-butylacrylamide) P(NIPAM-co-NtBAM) side chains was developed and examined as a shear thinning soft gelating bioink. The copolymer was found to undergo a two-step gelation mechanism; in the first step a three-dimensional (3D) network is formed through ionic interactions between the negatively ionized carboxylic groups of the alginate backbone and the positive charges of Ca2+ divalent cations, according to the "egg-box" mechanism. The second gelation step occurs upon heating which triggers the hydrophobic association of the thermoresponsive P(NIPAM-co-NtBAM) side chains, increasing the network crosslinking density in a highly cooperative manner. Interestingly, the dual crosslinking mechanism resulted in a five-to-eight-fold improvement of the storage modulus implying reinforced hydrophobic crosslinking above the critical thermo-gelation temperature which is further boosted by the ionic crosslinking of the alginate backbone. The proposed bioink could form arbitrary geometries under mild 3D printing conditions. Last, it is demonstrated that the proposed developed bioink can be further utilized as bioprinting ink and showcased its ability to promote human periosteum derived cells (hPDCs) growth in 3D and their capacity to form 3D spheroids. In conclusion, the bioink, owing its ability to reverse thermally the crosslinking of its polymer network, can be further utilized for the facile recovery of the cell spheroids, implying its promising potential use as cell spheroid-forming template bionk for applications in 3D biofabrication.
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4
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Guo W, Chen Z, Feng Z, Li H, Zhang M, Zhang H, Cui X. Fabrication of Concave Microwells and Their Applications in Micro-Tissue Engineering: A Review. MICROMACHINES 2022; 13:mi13091555. [PMID: 36144178 PMCID: PMC9505614 DOI: 10.3390/mi13091555] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 05/27/2023]
Abstract
At present, there is an increasing need to mimic the in vivo micro-environment in the culture of cells and tissues in micro-tissue engineering. Concave microwells are becoming increasingly popular since they can provide a micro-environment that is closer to the in vivo environment compared to traditional microwells, which can facilitate the culture of cells and tissues. Here, we will summarize the fabrication methods of concave microwells, as well as their applications in micro-tissue engineering. The fabrication methods of concave microwells include traditional methods, such as lithography and etching, thermal reflow of photoresist, laser ablation, precision-computerized numerical control (CNC) milling, and emerging technologies, such as surface tension methods, the deformation of soft membranes, 3D printing, the molding of microbeads, air bubbles, and frozen droplets. The fabrication of concave microwells is transferring from professional microfabrication labs to common biochemical labs to facilitate their applications and provide convenience for users. Concave microwells have mostly been used in organ-on-a-chip models, including the formation and culture of 3D cell aggregates (spheroids, organoids, and embryoids). Researchers have also used microwells to study the influence of substrate topology on cellular behaviors. We will briefly review their applications in different aspects of micro-tissue engineering and discuss the further applications of concave microwells. We believe that building multiorgan-on-a-chip by 3D cell aggregates of different cell lines will be a popular application of concave microwells, while integrating physiologically relevant molecular analyses with the 3D culture platform will be another popular application in the near future. Furthermore, 3D cell aggregates from these biosystems will find more applications in drug screening and xenogeneic implantation.
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Affiliation(s)
- Weijin Guo
- Department of Biomedical Engineering, Shantou University, Shantou 515063, China
| | - Zejingqiu Chen
- Department of Biology, Shantou University, Shantou 515063, China
| | - Zitao Feng
- Department of Biomedical Engineering, Shantou University, Shantou 515063, China
| | - Haonan Li
- Department of Electrical Engineering, Shantou University, Shantou 515063, China
| | - Muyang Zhang
- Department of Electrical Engineering, Shantou University, Shantou 515063, China
| | - Huiru Zhang
- Guangdong Foshan Lianchuang Graduate School of Engineering, Foshan 528311, China
| | - Xin Cui
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
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5
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Xu L, Li X, Li W, Chang K, Yang H, Tao N, Zhang P, Payne EM, Modavi C, Humphries J, Lu C, Abate AR. Microbowls with Controlled Concavity for Accurate Microscale Mass Spectrometry. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108194. [PMID: 35045587 PMCID: PMC9028217 DOI: 10.1002/adma.202108194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Patterned surfaces can enhance the sensitivity of laser desorption ionization mass spectrometry by segregating and concentrating analytes, but their fabrication can be challenging. Here, a simple method to fabricate substrates patterned with micrometer-scale wells that yield more accurate and sensitive mass spectrometry measurements compared to flat surfaces is described. The wells can also concentrate and localize cells and beads for cell-based assays.
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Affiliation(s)
- Linfeng Xu
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
| | - Xiangpeng Li
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
| | - Wenzong Li
- Amyris Inc.5885 Hollis St #100EmeryvilleCA94608USA
| | - Kai‐chun Chang
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
| | - Hyunjun Yang
- Institute for Neurodegenerative DiseasesWeill Institute for NeurosciencesUniversity of CaliforniaSan FranciscoCA94158USA
| | | | - Pengfei Zhang
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
| | - Emory M. Payne
- Department of ChemistryUniversity of MichiganAnn ArborMI48104USA
| | - Cyrus Modavi
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
| | | | - Chia‐Wei Lu
- Amyris Inc.5885 Hollis St #100EmeryvilleCA94608USA
| | - Adam R. Abate
- Department of Bioengineering and Therapeutic SciencesUniversity of California, San FranciscoSan FranciscoCA94158USA
- Chan Zuckerberg BiohubSan FranciscoCA94158USA
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6
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Rabie AM, Ali ASM, Al-Zeer MA, Barhoum A, EL-Hallouty S, Shousha WG, Berg J, Kurreck J, Khalil ASG. Spontaneous Formation of 3D Breast Cancer Tissues on Electrospun Chitosan/Poly(ethylene oxide) Nanofibrous Scaffolds. ACS OMEGA 2022; 7:2114-2126. [PMID: 35071900 PMCID: PMC8771982 DOI: 10.1021/acsomega.1c05646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 12/22/2021] [Indexed: 05/06/2023]
Abstract
Three-dimensional (3D) tissue culture has attracted a great deal of attention as a result of the need to replace the conventional two-dimensional cell cultures with more meaningful methods, especially for understanding the sophisticated nature of native tumor microenvironments. However, most techniques for 3D tissue culture are laborious, expensive, and limited to spheroid formation. In this study, a low-cost and highly effective nanofibrous scaffold is presented for spontaneous formation of reproducible 3D breast cancer microtissues. Experimentally, aligned and non-aligned chitosan/poly(ethylene oxide) nanofibrous scaffolds were prepared at one of two chitosan concentrations (2 and 4 wt %) and various electrospinning parameters. The resulting fabricated scaffolds (C2P1 and C4P1) were structurally and morphologically characterized, as well as analyzed in silico. The obtained data suggest that the fiber diameter, surface roughness, and scaffold wettability are tunable and can be influenced based on the chitosan concentration, electrospinning conditions, and alignment mode. To test the usefulness of the fabricated scaffolds for 3D cell culture, a breast cancer cell line (MCF-7) was cultured on their surfaces and evaluated morphologically and biochemically. The obtained data showed a higher proliferation rate for cells grown on scaffolds compared to cells grown on two-dimensional adherent plates (tissue culture plate). The MTT assay revealed that the rate of cell proliferation on nanofibrous scaffolds is statistically significantly higher compared to tissue culture plate (P ≤ 0.001) after 14 days of culture. The formation of spheroids within the first few days of culture shows that the scaffolds effectively support 3D tissue culture from the outset of the experiment. Furthermore, 3D breast cancer tissues were spontaneously formed within 10 days of culture on aligned and non-aligned nanofibrous scaffolds, which suggests that the scaffolds imitate the in vivo extracellular matrix in the tumor microenvironment. Detailed mechanisms for the spontaneous formation of the 3D microtissues have been proposed. Our results suggest that scaffold surface topography significantly influences tissue formation and behavior of the cells.
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Affiliation(s)
- Amna M.
I. Rabie
- Environmental
and Smart Technology Group (ESTG), Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Ahmed S. M. Ali
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
- Nanotechnology
Research Center (NTRC), The British University
in Egypt (BUE), El-Sherouk City, 11837 Cairo, Egypt
| | - Munir A. Al-Zeer
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Ahmed Barhoum
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Salwa EL-Hallouty
- Department
of Medicinal Drugs, National Research Center, 12622 Giza, Egypt
| | - Wafaa G. Shousha
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Johanna Berg
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Jens Kurreck
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Ahmed S. G. Khalil
- Environmental
and Smart Technology Group (ESTG), Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Materials
Science & Engineering Department, School of Innovative Design
Engineering, Egypt-Japan University of Science
and Technology (E-JUST), 21934 Alexandria, Egypt
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7
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Manzoor AA, Hwang DK. Modeling and Numerical Studies of Three‐Dimensional Conically Shaped Microwells Using Non‐Uniform Photolithography. MACROMOL THEOR SIMUL 2022. [DOI: 10.1002/mats.202100085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmad Ali Manzoor
- Department of Chemical Engineering Ryerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
- Keenan Research Centre for Biomedical Science St. Michael's Hospital 30 Bond Street Toronto ON M5B 1W8 Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST) A Partnership Between Ryerson University and St. Michael's Hospital 30 Bond Street Toronto ON M5B 1W8 Canada
| | - Dae Kun Hwang
- Department of Chemical Engineering Ryerson University 350 Victoria Street Toronto ON M5B 2K3 Canada
- Keenan Research Centre for Biomedical Science St. Michael's Hospital 30 Bond Street Toronto ON M5B 1W8 Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST) A Partnership Between Ryerson University and St. Michael's Hospital 30 Bond Street Toronto ON M5B 1W8 Canada
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8
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Sun B, Zhao Y, Wu W, Zhao Q, Li G. A superhydrophobic chip integrated with an array of medium reservoirs for long-term hanging drop spheroid culture. Acta Biomater 2021; 135:234-242. [PMID: 34389482 DOI: 10.1016/j.actbio.2021.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 01/24/2023]
Abstract
Hanging drop (HD) is one of the most popular methods used for forming three-dimensional (3D) cell spheroids. However, conventional hanging drop systems are only applicable for short-term spheroid culture due to their inconvenience in exchanging cell culture media. Here we present a medium-reservoir-integrated superhydrophobic (MRI-SH) chip for long-term HD spheroid cultures. The device consists of two main components: i) a patterned superhydrophobic (SH) surface containing an array of wettable spots which anchor arrays of droplets of cell suspension, and ii) an array of chambers that serve as medium reservoirs, both interconnected via an array of thru-holes. This configuration provides two distinct advantages over conventional HD configurations: i) the high wettability contrast of the SH pattern on the chip leads to the formation and adhesion of nearly spherical hanging droplets on its surface, which minimizes interactions between the liquid and the substrate; ii) the integrated chambers provide large volumes of medium to maintain longer culture durations. Using this device, spheroids of MHCC97H cells were successfully formed, and the cultured spheroids could maintain high viability for up to 30 days and exhibited enhanced spheroid morphology compared to those cultured in the conventional HD systems. STATEMENT OF SIGNIFICANCE: This paper presents a medium-reservoir-integrated superhydrophobic hanging drop (HD) platform for the long-term culture of spheroids with enhanced morphology. By monolithically integrating medium reservoirs and a patterned SH surface into a single device, this HD platform can not only produce high-quality spheroids, but also permit them to sustain high viability for up to 30 days without the need for tedious medium replenishment. We believe that such a platform will be valuable in a wide range of biological or biomedical applications, including tissue engineering, regenerative medicine, and drug discovery.
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Affiliation(s)
- Bangyong Sun
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defence Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China
| | - Yi Zhao
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Weimin Wu
- School of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Qiang Zhao
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defence Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China
| | - Gang Li
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Defence Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Chongqing University, Chongqing 400044, China.
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9
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Boban M, Mehta P, Halvey AK, Repetto T, Tuteja A, Mehta G. Novel Omniphobic Platform for Multicellular Spheroid Generation, Drug Screening, and On-Plate Analysis. Anal Chem 2021; 93:8054-8061. [PMID: 34038078 DOI: 10.1021/acs.analchem.1c01326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Multicellular spheroids are superior to other culture geometries in reproducing critical physiological conditions of tumors, such as the diffusion of oxygen, nutrients, waste, and drugs, leading to a more precise model of in vivo drug sensitivity and resistance. Previously reported spheroid culture platforms are often difficult to use, expensive, single-use, or mechanically unstable. Here, we report a facile, mechanically stable, high-throughput spheroid culture platform based on hierarchically textured omniphobic surfaces. The developed omniphobic surfaces display very high contact angles with a range of different liquids, including the cell-laden culture media, thereby minimizing the cell surface contact area. Additionally, these surfaces maintain these high contact angles for extended periods of time to ensure cell aggregation. Using this novel platform, we demonstrate the generation and maintenance of robust multicellular spheroids, as well as heterogeneous, multicell-type spheroids. The platform is extremely robust, resistant to mechanical shock, allows for on-plate imaging, and is also the first-ever spheroid generation platform that can be reused repeatedly. Finally, the platform is suitable for on-plate drug screening and enables the first-ever, on-plate immunofluorescence staining and imaging of spheroids.
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Affiliation(s)
- Mathew Boban
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Pooja Mehta
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Alex Kate Halvey
- Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Taylor Repetto
- Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Anish Tuteja
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Geeta Mehta
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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10
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Saini H, Nikkhah M. Fabrication Method of a High-Density Co-Culture Tumor-Stroma Platform to Study Cancer Progression. Methods Mol Biol 2021; 2258:241-255. [PMID: 33340365 DOI: 10.1007/978-1-0716-1174-6_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cancer has now been established as one of the most common chronic diseases due to high mortality rate. The early stage of non-invasive tumors can now be successfully treated leading to have high survival rates; however, the late stage invasive and metastatic tumors still suffer from poor treatment outcomes. Among multiple contributing factors, the role of tumor microenvironment and its complexities has been well recognized in cancer progression. Stromal cells including cancer-associated fibroblasts (CAFs), endothelial cells, adipocytes, immune cells as well as extracellular matrix (ECM) continuously interact with malignant cells and regulate various hallmarks of cancer including tumor growth, invasion, and intravasation. To better understand the role of the interaction between tumor cells and their surrounding microenvironment, numerous model systems ranging from two-dimensional (2D) assays to 3D hydrogels and in vivo murine xenografts have been utilized. While each one of these model systems exhibit certain advantages in studying biological facets of tumor progression, they are often limited to perform well-controlled mechanistic studies due to various factors including lack of tumor-stroma organotypic organization and presence of confounding biochemical and biophysical factors within the tumor microenvironment. In this regard, in the past few years, 3D in vitro microengineered model systems are becoming instrumental to precisely mimic the complexities of the native tumor microenvironment to conduct fundamental and well-designed studies for multiple purposes ranging from biological discovery to therapeutic screening. These model systems include microfluidics, micro-patterned features, and 3D organoids. In this chapter, we will outline the fabrication strategy of our microengineered 3D co-culture tumor-stromal model which comprises high-density array of tumor seeded microwells surrounded by stromal cells, such as CAFs encapsulated within collagen-based hydrogel. The developed platform provides excellent spatial organization of tumor and stromal entities with designated initial architecture and cellular positioning, therefore enabling to study the specific role of cell-cell and cell-ECM interaction on tumor proliferation/expansion, cancer cell migration as well as stromal activation. The developed platform is compatible with standard biological assays enabling gene and protein expression analyses across different types of cancer and co-culture of tumor and stromal cells.
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Affiliation(s)
- Harpinder Saini
- Harrington Department of Bioengineering, School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ, USA
| | - Mehdi Nikkhah
- Harrington Department of Bioengineering, School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ, USA.
- Center for Personalized Diagnostics (CPD), Biodesign Institute, Arizona State University, Tempe, AZ, USA.
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11
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Kang SM, Kim D, Lee JH, Takayama S, Park JY. Engineered Microsystems for Spheroid and Organoid Studies. Adv Healthc Mater 2021; 10:e2001284. [PMID: 33185040 PMCID: PMC7855453 DOI: 10.1002/adhm.202001284] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/01/2020] [Indexed: 01/09/2023]
Abstract
3D in vitro model systems such as spheroids and organoids provide an opportunity to extend the physiological understanding using recapitulated tissues that mimic physiological characteristics of in vivo microenvironments. Unlike 2D systems, 3D in vitro systems can bridge the gap between inadequate 2D cultures and the in vivo environments, providing novel insights on complex physiological mechanisms at various scales of organization, ranging from the cellular, tissue-, to organ-levels. To satisfy the ever-increasing need for highly complex and sophisticated systems, many 3D in vitro models with advanced microengineering techniques have been developed to answer diverse physiological questions. This review summarizes recent advances in engineered microsystems for the development of 3D in vitro model systems. The relationship between the underlying physics behind the microengineering techniques, and their ability to recapitulate distinct 3D cellular structures and functions of diverse types of tissues and organs are highlighted and discussed in detail. A number of 3D in vitro models and their engineering principles are also introduced. Finally, current limitations are summarized, and perspectives for future directions in guiding the development of 3D in vitro model systems using microengineering techniques are provided.
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Affiliation(s)
- Sung-Min Kang
- Department of Green Chemical Engineering, Sangmyung University, Cheonan, Chungnam, 31066, Republic of Korea
| | - Daehan Kim
- Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ji-Hoon Lee
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
- The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Shuichi Takayama
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, GA, 30332, USA
- The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Joong Yull Park
- Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
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12
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Behroodi E, Latifi H, Bagheri Z, Ermis E, Roshani S, Salehi Moghaddam M. A combined 3D printing/CNC micro-milling method to fabricate a large-scale microfluidic device with the small size 3D architectures: an application for tumor spheroid production. Sci Rep 2020; 10:22171. [PMID: 33335148 PMCID: PMC7747638 DOI: 10.1038/s41598-020-79015-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/02/2020] [Indexed: 02/06/2023] Open
Abstract
The fabrication of a large-scale microfluidic mold with 3D microstructures for manufacturing of the conical microwell chip using a combined projection micro-stereolithography (PµSL) 3D printing/CNC micro-milling method for tumor spheroid formation is presented. The PµSL technique is known as the most promising method of manufacturing microfluidic chips due to the possibility of creating complex three-dimensional microstructures with high resolution in the range of several micrometers. The purpose of applying the proposed method is to investigate the influence of microwell depths on the formation of tumor spheroids. In the conventional methods, the construction of three-dimensional microstructures and multi-height chips is difficult, time-consuming, and is performed using a multi-step lithography process. Microwell depth is an essential parameter for microwell design since it directly affects the shear stress of the fluid flow and the diffusion of nutrients, respiratory gases, and growth factors. In this study, a chip was made with microwells of different depth varying from 100 to 500 µm. The mold of the microwell section is printed by the lab-made PµSL printer with 6 and 1 µm lateral and vertical resolutions. Other parts of the mold, such as the main chamber and micro-channels, were manufactured using the CNC micro-milling method. Finally, different parts of the master mold were assembled and used for PDMS casting. The proposed technique drastically simplifies the fabrication and rapid prototyping of large-scale microfluidic devices with high-resolution microstructures by combining 3D printing with the CNC micro-milling method.
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Affiliation(s)
- Ebrahim Behroodi
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983963113, Tehran, Iran
| | - Hamid Latifi
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983963113, Tehran, Iran. .,Department of Physics, Shahid Beheshti University, 1983963113, Tehran, Iran.
| | - Zeinab Bagheri
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, 1983963113, Tehran, Iran
| | - Esra Ermis
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, 1983963113, Tehran, Iran
| | - Shabnam Roshani
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, 1983963113, Tehran, Iran
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13
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Baptista D, Teixeira LM, Birgani ZT, van Riet S, Pasman T, Poot A, Stamatialis D, Rottier RJ, Hiemstra PS, Habibović P, van Blitterswijk C, Giselbrecht S, Truckenmüller R. 3D alveolar in vitro model based on epithelialized biomimetically curved culture membranes. Biomaterials 2020; 266:120436. [PMID: 33120199 DOI: 10.1016/j.biomaterials.2020.120436] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 08/30/2020] [Accepted: 10/06/2020] [Indexed: 01/25/2023]
Abstract
There is increasing evidence that surface curvature at a near-cell-scale influences cell behaviour. Epithelial or endothelial cells lining small acinar or tubular body lumens, as those of the alveoli or blood vessels, experience such highly curved surfaces. In contrast, the most commonly used culture substrates for in vitro modelling of these human tissue barriers, ion track-etched membranes, offer only flat surfaces. Here, we propose a more realistic culture environment for alveolar cells based on biomimetically curved track-etched membranes, preserving the mainly spherical geometry of the cells' native microenvironment. The curved membranes were created by a combination of three-dimensional (3D) micro film (thermo)forming and ion track technology. We could successfully demonstrate the formation, the growth and a first characterization of confluent layers of lung epithelial cell lines and primary alveolar epithelial cells on membranes shaped into an array of hemispherical microwells. Besides their application in submerged culture, we could also demonstrate the compatibility of the bioinspired membranes for air-exposed culture. We observed a distinct cellular response to membrane curvature. Cells (or cell layers) on the curved membranes reveal significant differences compared to cells on flat membranes concerning membrane epithelialization, areal cell density of the formed epithelial layers, their cross-sectional morphology, and proliferation and apoptosis rates, and the same tight barrier function as on the flat membranes. The presented 3D membrane technology might pave the way for more predictive barrier in vitro models in future.
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Affiliation(s)
- D Baptista
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands
| | - L Moreira Teixeira
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands; Department of Developmental BioEngineering, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, the Netherlands
| | - Z Tahmasebi Birgani
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands
| | - S van Riet
- Department of Pulmonology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands
| | - T Pasman
- Department of Biomaterials Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, the Netherlands
| | - A Poot
- Department of Biomaterials Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, the Netherlands
| | - D Stamatialis
- Department of Biomaterials Science and Technology, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, the Netherlands
| | - R J Rottier
- Department of Pediatric Surgery/Cell Biology, Erasmus (University) Medical Center - Sophia Children's Hospital, Doctor Molewaterplein 40, 3015 GD, Rotterdam, the Netherlands
| | - P S Hiemstra
- Department of Pulmonology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands
| | - P Habibović
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands
| | - C van Blitterswijk
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands
| | - S Giselbrecht
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands
| | - R Truckenmüller
- MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands.
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14
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Hayase G, Yoshino D. CNC-Milled Superhydrophobic Macroporous Monoliths for 3D Cell Culture. ACS APPLIED BIO MATERIALS 2020; 3:4747-4750. [PMID: 35021721 DOI: 10.1021/acsabm.0c00719] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
High-strength macroporous monoliths can be obtained by the simple mixing of boehmite nanofiber aqueous acetate dispersions with methyltrimethoxysilane. On the boehmite nanofiber-polymethylsilsesquioxane monoliths, we can fabricate structures smaller than a millimeter in size by computer numerical control (CNC) milling, resulting in a machined surface that is superhydrophobic and biocompatible. Using this strategy, we fabricated a superhydrophobic multiwell plate that holds water droplets to produce 3D cell culture environments for various cell types. We expect these superhydrophobic monoliths to have future applications in 3D tissue construction.
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Affiliation(s)
- Gen Hayase
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Daisuke Yoshino
- Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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15
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Gonzalez-Fernandez T, Tenorio AJ, Leach JK. Three-Dimensional Printed Stamps for the Fabrication of Patterned Microwells and High-Throughput Production of Homogeneous Cell Spheroids. 3D PRINTING AND ADDITIVE MANUFACTURING 2020; 7:139-147. [PMID: 32855996 PMCID: PMC7313638 DOI: 10.1089/3dp.2019.0129] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Aggregation of cells into spheroids and organoids is a promising tool for regenerative medicine, cancer and cell biology, and drug discovery due to their recapitulation of the cell-cell and cell-matrix interactions found in vivo. Traditional approaches for the production of spheroids, such as the hanging drop method, are limited by the lack of reproducibility and the use of labor-intensive and time-consuming techniques. The need for high-throughput approaches allowing for the quick and reproducible formation of cell aggregates has driven the development of soft lithography techniques based on the patterning of microwells into nonadherent hydrogels. However, these methods are also limited by costly, labor-intensive, and multistep protocols that could impact the sterility of the process and efficiency of spheroid formation. In this study, we describe a one-step method for the fabrication of patterned nonadherent microwells into tissue culture plates using three-dimensional (3D) printed stamps and evaluate the production of cell spheroids of different sizes and cell sources. The generation of bone marrow-derived mesenchymal stromal cell and endothelial cell spheroids by the use of 3D printed stamps was superior in comparison with a widely used multistep mold technique, yielding spheroids of larger sizes and higher DNA content. The 3D stamps produced spheroids of more consistent diameter and DNA content when compared with other commercially available methods. These 3D printed stamps offer a tunable, simple, fast, and cost-effective approach for the production of reproducible spheroids and organoids for a wide range of applications.
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Affiliation(s)
| | - Alejandro J. Tenorio
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, California, USA
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, California, USA
- Address correspondence to: J. Kent Leach, Department of Biomedical Engineering, University of California, Davis, 451 Health Sciences Drive, 2303 GBSF, Davis, CA 95616, USA
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16
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Chao C, Ngo Le P, Engelward BP. SpheroidChip: Patterned Agarose Microwell Compartments Harboring HepG2 Spheroids are Compatible with Genotoxicity Testing. ACS Biomater Sci Eng 2020; 6:2427-2439. [PMID: 33145399 DOI: 10.1021/acsbiomaterials.9b01951] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Three-dimensional tissue culture models are emerging as effective alternatives to animal testing. They are especially beneficial for liver toxicity studies, enabling hepatocytes to display improved levels of liver-specific functions. One common model is hepatocyte spheroids, which are spontaneously formed cell aggregates. Techniques for spheroid formation include the use of ultralow attachment plates and the hanging drop method, both of which are technically challenging and relatively low throughput. Here, we describe a simple-to-use platform that improves spheroid production and is compatible with genotoxicity testing by the comet assay. To achieve this, we created a chip containing a microwell array where dozens of spheroids are contained within a single well of a 96-well plate. The microwells are made from agarose, a nontoxic material suitable for cell growth and spheroid formation. HepG2 cells loaded into customizable microwells formed spheroids through agarose-assisted aggregation within one to two days. In addition, the agarose matrix allows the same platform to be used in DNA damage analysis. Specifically, the comet assay enables quantification of DNA breaks based on the increased migration of damaged DNA through agarose during electrophoresis. Here, we developed a modified comet assay and show that intact HepG2 spheroids cultured in microwells can be electrophoresed to reveal the extent of DNA damage following exposure to inflammatory chemicals (H2O2 and SIN-1). With this SpheroidChip analysis method, we detected a dose-dependent increase in DNA damage and observed rapid repair of H2O2-induced DNA damage. In summary, we utilized an agarose microarray to condense what had required an entire 96-well plate into a single well, enabling analysis techniques that were cumbersome or impossible under conditions of a single spheroid per well of a 96-well plate.
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Affiliation(s)
- Christy Chao
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - P Ngo Le
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Bevin P Engelward
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
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17
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Zhao Y, Fletcher NL, Gemmell A, Houston ZH, Howard CB, Blakey I, Liu T, Thurecht KJ. Investigation of the Therapeutic Potential of a Synergistic Delivery System through Dual Controlled Release of Camptothecin–Doxorubicin. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.201900202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yongmei Zhao
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
- School of PharmacyNantong University Nantong 226019 China
| | - Nicholas L. Fletcher
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
| | - Anna Gemmell
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
| | - Zachary H. Houston
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
| | - Christopher B. Howard
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
| | - Idriss Blakey
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
| | - Tianqing Liu
- QIMR Berghofer Medical Research Institute 300 Herston Road Brisbane QLD 4006 Australia
| | - Kristofer J. Thurecht
- Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology, ARC Centre of Excellence in Convergent Bio‐Nano Science and Technology and ARC Training Centre in Biomedical Imaging TechnologyThe University of Queensland Brisbane QLD 4072 Australia
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18
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Li Z, Guo X, Sun L, Xu J, Liu W, Li T, Wang J. A simple microsphere‐based mold to rapidly fabricate microwell arrays for multisize 3D tumor culture. Biotechnol Bioeng 2020; 117:1092-1100. [DOI: 10.1002/bit.27257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/21/2019] [Accepted: 12/15/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Zixiu Li
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Xiaofang Guo
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Lili Sun
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Juan Xu
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Wenming Liu
- School of Basic Medical Science Central South University Changsha Hunan P. R. China
| | - Tianbao Li
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
| | - Jinyi Wang
- College of Chemistry & Pharmacy Northwest A&F University Yangling Shaanxi P. R. China
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19
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Fu C, Tang J, Pye A, Liu T, Zhang C, Tan X, Han F, Peng H, Whittaker AK. Fluorinated Glycopolymers as Reduction-responsive 19F MRI Agents for Targeted Imaging of Cancer. Biomacromolecules 2019; 20:2043-2050. [PMID: 30995836 DOI: 10.1021/acs.biomac.9b00241] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Imaging agents that can be targeted to specific diseases and respond to the microenvironment of the diseased tissue are of considerable interest due to their potential in diagnosing and managing diseases. Here we report a new class of branched fluorinated glycopolymers as 19F MRI contrast agents that respond to a reductive environment, for targeted imaging of cancer. The fluorinated glycopolymers can be readily prepared by a one-pot RAFT polymerization of glucose- and fluorine-containing monomers in the presence of a disulfide-containing cross-linking monomer. The incorporation of glucose units along the polymer chain enables these fluorinated glycopolymers to effectively target cancer cells due to interactions with the overexpressed sugar transporters present on the cell surface. In addition, the polymers exhibit an enhanced 19F MRI signal in response to a reductive environment, one of the unique hallmarks of many cancer cells, demonstrating their potential as promising candidates for targeted imaging of cancer.
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Affiliation(s)
- Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Joyce Tang
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Aidan Pye
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Tianqing Liu
- QIMR Berghofer Medical Research Institute , PO Royal Brisbane Hospital , Brisbane , Queensland 4029 , Australia
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Xiao Tan
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Felicity Han
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Andrew K Whittaker
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
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20
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Bianco M, Zizzari A, Priore P, Moroni L, Metrangolo P, Frigione M, Rella R, Gaballo A, Arima V. Lab-on-a-brane for spheroid formation. Biofabrication 2019; 11:021002. [PMID: 30776782 DOI: 10.1088/1758-5090/ab0813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lab-On-a-Brane (LOB) represents a class of Lab-On-a-Chip (LOC) integrating flexible, highly gas permeable and biocompatible thin membranes (TMs). Here we demonstrate the potentiality of LOBs as cell biochips promoting 3D cell growth. The human cancer cells MCF-7 were cultured into standard multiwells (MWs) and into polydimethylsiloxane (PDMS) MWs, LOCs, and LOBs of different wettability. Surface treatments based on oxygen plasma and coating deposition have been performed to produce hydrophilic, hydrophobic, and oleophobic chips. By a comparison between all these chips, we observed that 3D cell aggregation is favored in LOBs, independent of substrate wettability. This may be attributed to the TM flexibility and the high oxygen/carbon dioxide permeability. Ultimately, LOBs seem to combine the advantages of LOCs as multi-well microfluidic chips to reduce operation time for cell seeding and medium refresh, with the mechanical/morphological properties of PDMS TMs. This is convenient in the perspective of applying mechanical stimuli and monitoring cell stiffness, or studying the metabolism of molecules permeable to PDMS membrane in response to external stimuli with interesting outcomes in cellular biology.
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Affiliation(s)
- M Bianco
- CNR-NANOTEC, Institute of Nanotechnology c/o Campus Ecotekne, Lecce, Italy
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21
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Baptista D, Teixeira L, van Blitterswijk C, Giselbrecht S, Truckenmüller R. Overlooked? Underestimated? Effects of Substrate Curvature on Cell Behavior. Trends Biotechnol 2019; 37:838-854. [PMID: 30885388 DOI: 10.1016/j.tibtech.2019.01.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 01/20/2019] [Accepted: 01/22/2019] [Indexed: 12/31/2022]
Abstract
In biological systems, form and function are inherently correlated. Despite this strong interdependence, the biological effect of curvature has been largely overlooked or underestimated, and consequently it has rarely been considered in the design of new cell-material interfaces. This review summarizes current understanding of the interplay between the curvature of a cell substrate and the related morphological and functional cellular response. In this context, we also discuss what is currently known about how, in the process of such a response, cells recognize curvature and accordingly reshape their membrane. Beyond this, we highlight state-of-the-art microtechnologies for engineering curved biomaterials at cell-scale, and describe aspects that impair or improve readouts of the pure effect of curvature on cells.
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Affiliation(s)
- Danielle Baptista
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands
| | - Liliana Teixeira
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; Department of Developmental BioEngineering, Technical Medical Centre, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands
| | - Clemens van Blitterswijk
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands
| | - Stefan Giselbrecht
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; These authors contributed equally to this work
| | - Roman Truckenmüller
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; These authors contributed equally to this work.
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22
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Replica moulded poly(dimethylsiloxane) microwell arrays induce localized endothelial cell immobilization for coculture with pancreatic islets. Biointerphases 2019; 14:011002. [PMID: 30700091 DOI: 10.1116/1.5087737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PolyJet three-dimensional (3D) printing allows for the rapid manufacturing of 3D moulds for the fabrication of cross-linked poly(dimethylsiloxane) microwell arrays (PMAs). As this 3D printing technique has a resolution on the micrometer scale, the moulds exhibit a distinct surface roughness. In this study, the authors demonstrate by optical profilometry that the topography of the 3D printed moulds can be transferred to the PMAs and that this roughness induced cell adhesive properties to the material. In particular, the topography facilitated immobilization of endothelial cells on the internal walls of the microwells. The authors also demonstrate that upon immobilization of endothelial cells to the microwells, a second population of cells, namely, pancreatic islets could be introduced, thus producing a 3D coculture platform.
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23
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Park SM, Lee SJ, Lim J, Kim BC, Han SJ, Kim DS. Versatile Fabrication of Size- and Shape-Controllable Nanofibrous Concave Microwells for Cell Spheroid Formation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37878-37885. [PMID: 30360112 DOI: 10.1021/acsami.8b15821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Although the microfabrication techniques for microwells enabled to guide physiologically relevant three-dimensional cell spheroid formation, there have been substantial interests to more closely mimic nano/microtopographies of in vivo cellular microenvironment. Here, we developed a versatile fabrication process for nanofibrous concave microwells (NCMs) with a controllable size and shape. The key to the fabrication process was the use of an array of hemispherical convex electrolyte solution drops as the grounded collector for electrospinning, which greatly improved the degree of freedom of the size, shape, and curvature of an NCM. A polymer substrate with through-holes was prepared for the electrolyte solution to come out through the hole and to naturally form a convex shape because of surface tension. Subsequent electrolyte-assisted electrospinning process enabled to achieve various arrays of NCMs of triangular, rectangular, and circular shapes with sizes ranging from 1000 μm down to 250 μm. As one example of biomedical applications, the formation of human hepatoma cell line (HepG2) spheroids was demonstrated on the NCMs. The results indicated that the NCM enabled uniform, size-controllable spheroid formation of HepG2 cells, resulting in 1.5 times higher secretion of albumin from HepG2 cells on the NCM on day 14 compared with those on a nanofibrous flat microwell as a control.
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Affiliation(s)
- Sang Min Park
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
| | - Seong Jin Lee
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
| | - Jiwon Lim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
| | - Bum Chang Kim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
| | - Seon Jin Han
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering , Pohang University of Science and Technology (POSTECH) , 77 Cheongam-ro , Pohang , Gyeongbuk 37673 , South Korea
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24
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Forget A, Burzava ALS, Delalat B, Vasilev K, Harding FJ, Blencowe A, Voelcker NH. Rapid fabrication of functionalised poly(dimethylsiloxane) microwells for cell aggregate formation. Biomater Sci 2018; 5:828-836. [PMID: 28276540 DOI: 10.1039/c6bm00916f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cell aggregates reproduce many features of the natural architecture of functional tissues, and have therefore become an important in vitro model of tissue function. In this study, we present an efficient and rapid method for the fabrication of site specific functionalised poly(dimethylsiloxane) (PDMS) microwell arrays that promote the formation of insulin-producing beta cell (MIN6) aggregates. Microwells were prepared using an ice templating technique whereby aqueous droplets were frozen on a surface and PDMS was cast on top to form a replica. By employing an aqueous alkali hydroxide solution, we demonstrate exclusive etching and functionalisation of the microwell inner surface, thereby allowing the selective absorption of biological factors within the microwells. Additionally, by manipulating surface wettability of the substrate through plasma polymer coating, the shape and profile of the microwells could be tailored. Microwells coated with antifouling Pluronic 123, bovine serum albumin, collagen type IV or insulin growth factor 2 were employed to investigate the formation and stability of MIN6 aggregates in microwells of different shapes. MIN6 aggregates formed with this technique retained insulin expression. These results demonstrate the potential of this platform for the rapid screening of biological factors influencing the formation and response of insulin-producing cell aggregates without the need for expensive micromachining techniques.
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Affiliation(s)
- A Forget
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, Australia and Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Adelaide 5000, Australia
| | - A L S Burzava
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Adelaide 5000, Australia and Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
| | - B Delalat
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
| | - K Vasilev
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Adelaide 5000, Australia and School of Engineering, University of South Australia, Mawson Lakes 5095, Australia and Future Industries Institute, University of South Australia, Mawson Lakes 5095, Australia
| | - F J Harding
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Adelaide 5000, Australia and Future Industries Institute, University of South Australia, Mawson Lakes 5095, Australia and Cell Therapies Pty Ltd, Victorian Comprehensive Cancer Centre (VCCC), Melbourne 3000, Australia.
| | - A Blencowe
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Adelaide 5000, Australia and Future Industries Institute, University of South Australia, Mawson Lakes 5095, Australia and Cell Therapies Pty Ltd, Victorian Comprehensive Cancer Centre (VCCC), Melbourne 3000, Australia. and School of Pharmacy and Medical Science, University of South Australia, Adelaide 5000, Australia.
| | - N H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
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Rojas-Canales DM, Waibel M, Forget A, Penko D, Nitschke J, Harding FJ, Delalat B, Blencowe A, Loudovaris T, Grey ST, Thomas HE, Kay TWH, Drogemuller CJ, Voelcker NH, Coates PT. Oxygen-permeable microwell device maintains islet mass and integrity during shipping. Endocr Connect 2018; 7:490-503. [PMID: 29483160 PMCID: PMC5861371 DOI: 10.1530/ec-17-0349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 02/26/2018] [Indexed: 01/05/2023]
Abstract
Islet transplantation is currently the only minimally invasive therapy available for patients with type 1 diabetes that can lead to insulin independence; however, it is limited to only a small number of patients. Although clinical procedures have improved in the isolation and culture of islets, a large number of islets are still lost in the pre-transplant period, limiting the success of this treatment. Moreover, current practice includes islets being prepared at specialized centers, which are sometimes remote to the transplant location. Thus, a critical point of intervention to maintain the quality and quantity of isolated islets is during transportation between isolation centers and the transplanting hospitals, during which 20-40% of functional islets can be lost. The current study investigated the use of an oxygen-permeable PDMS microwell device for long-distance transportation of isolated islets. We demonstrate that the microwell device protected islets from aggregation during transport, maintaining viability and average islet size during shipping.
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Affiliation(s)
- Darling M Rojas-Canales
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Department of MedicineFaculty of Health and Medical Sciences, University of Adelaide, South Australia, Australia
| | - Michaela Waibel
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- St Vincent's Institute of Medical ResearchFitzroy, Victoria, Australia
- The University of MelbourneDepartment of Medicine, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Aurelien Forget
- Science and Engineering FacultyQueensland University of Technology, Brisbane, Queensland, Australia
| | - Daniella Penko
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Department of MedicineFaculty of Health and Medical Sciences, University of Adelaide, South Australia, Australia
| | - Jodie Nitschke
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Department of MedicineFaculty of Health and Medical Sciences, University of Adelaide, South Australia, Australia
| | - Fran J Harding
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Future Industries InstituteUniversity of South Australia, Mawson Lakes, South Australia, Australia
| | - Bahman Delalat
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Future Industries InstituteUniversity of South Australia, Mawson Lakes, South Australia, Australia
| | - Anton Blencowe
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Future Industries InstituteUniversity of South Australia, Mawson Lakes, South Australia, Australia
- School of Pharmacy and Medical SciencesUniversity of South Australia, Adelaide, South Australia, Australia
| | - Thomas Loudovaris
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- St Vincent's Institute of Medical ResearchFitzroy, Victoria, Australia
| | - Shane T Grey
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Transplantation Immunology GroupGarvan Institute of Medical Research, Darlinghurst, New South Wales, Australia
| | - Helen E Thomas
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- St Vincent's Institute of Medical ResearchFitzroy, Victoria, Australia
- The University of MelbourneDepartment of Medicine, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Thomas W H Kay
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- St Vincent's Institute of Medical ResearchFitzroy, Victoria, Australia
- The University of MelbourneDepartment of Medicine, St. Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Chris J Drogemuller
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Department of MedicineFaculty of Health and Medical Sciences, University of Adelaide, South Australia, Australia
| | - Nicolas H Voelcker
- Future Industries InstituteUniversity of South Australia, Mawson Lakes, South Australia, Australia
- Monash Institute of Pharmaceutical SciencesMonash University, Parkville, Victoria, Australia
| | - Patrick T Coates
- The Centre for Clinical and Experimental Transplantation (CCET) The Royal Adelaide HospitalAdelaide, South Australia, Australia
- Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM)Adelaide, South Australia, Australia
- Department of MedicineFaculty of Health and Medical Sciences, University of Adelaide, South Australia, Australia
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Li H, Liu P, Kaur G, Yao X, Yang M. Transparent and Gas-Permeable Liquid Marbles for Culturing and Drug Sensitivity Test of Tumor Spheroids. Adv Healthc Mater 2017; 6. [PMID: 28426154 DOI: 10.1002/adhm.201700185] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/11/2017] [Indexed: 12/20/2022]
Abstract
Transparent nanoparticle-based liquid marbles with high gas-permeability are prepared to culture tumor spheroids in 3D without the need of supplementary growth factor. The culturing process of spheroids from a population of cancer cells or a single cell in the transparent liquid marbles can be optically recorded continuously. Compared to monolayer cells and spheroids generated in multiwell plate, tumor spheroids cultured in the liquid marbles show enhanced viability under the treatment of chemotherapeutic drugs and small interfering RNA.
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Affiliation(s)
- Hualin Li
- Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Ave Kowloon Tong 999077 Hong Kong SAR P. R. China
- Key Laboratory of Biochip Technology; Biotechnology and Health Centre; City University of Hong Kong Shenzhen Research Institute; 518075 Shenzhen P. R. China
| | - Peng Liu
- Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Ave Kowloon Tong 999077 Hong Kong SAR P. R. China
- Key Laboratory of Biochip Technology; Biotechnology and Health Centre; City University of Hong Kong Shenzhen Research Institute; 518075 Shenzhen P. R. China
| | - Guneet Kaur
- Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Ave Kowloon Tong 999077 Hong Kong SAR P. R. China
| | - Xi Yao
- Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Ave Kowloon Tong 999077 Hong Kong SAR P. R. China
- Key Laboratory of Biochip Technology; Biotechnology and Health Centre; City University of Hong Kong Shenzhen Research Institute; 518075 Shenzhen P. R. China
| | - Mengsu Yang
- Department of Biomedical Sciences; City University of Hong Kong; 83 Tat Chee Ave Kowloon Tong 999077 Hong Kong SAR P. R. China
- Key Laboratory of Biochip Technology; Biotechnology and Health Centre; City University of Hong Kong Shenzhen Research Institute; 518075 Shenzhen P. R. China
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Advanced biomaterials and microengineering technologies to recapitulate the stepwise process of cancer metastasis. Biomaterials 2017; 133:176-207. [DOI: 10.1016/j.biomaterials.2017.04.017] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 04/04/2017] [Accepted: 04/12/2017] [Indexed: 02/08/2023]
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Amaral AJR, Pasparakis G. Rapid Formation of Cell Aggregates and Spheroids Induced by a "Smart" Boronic Acid Copolymer. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22930-22941. [PMID: 27571512 DOI: 10.1021/acsami.6b07911] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cell surface engineering has emerged as a powerful approach to forming cell aggregates/spheroids and cell-biomaterial ensembles with significant uses in tissue engineering and cell therapeutics. Herein, we demonstrate that cell membrane remodeling with a thermoresponsive boronic acid copolymer induces the rapid formation of spheroids using either cancer or cardiac cell lines under conventional cell culture conditions at minute concentrations. It is shown that the formation of well-defined spheroids is accelerated by at least 24 h compared to non-polymer-treated controls, and, more importantly, the polymer allows for fine control of the aggregation kinetics owing to its stimulus response to temperature and glucose content. On the basis of its simplicity and effectiveness to promote cellular aggregation, this platform holds promise in three-dimensional tissue/tumor modeling and tissue engineering applications.
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Affiliation(s)
- Adérito J R Amaral
- UCL School of Pharmacy, University College London (UCL) , 29-39 Brunswick Square, London WC1N 1AX, U.K
| | - George Pasparakis
- UCL School of Pharmacy, University College London (UCL) , 29-39 Brunswick Square, London WC1N 1AX, U.K
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29
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Shravage B, Ramteke S, Kulkarni P, Bodas D. A concave microwell array fabricated using the ommatidium of the common fruit fly for efficient cell culture. RSC Adv 2016. [DOI: 10.1039/c6ra09798g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Top left: SEM of compound eye ofDrosophila melanogasterreplica in PDMS. Bottom left: SEM of MCF-7 cell grown in the micro well. Bottom right: confocal of the MCF-7 cells grown for 72 h.
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Affiliation(s)
| | - Shefali Ramteke
- Bioprospecting Group
- Agharkar Research Institute
- Pune 411 004
- India
| | - Prasad Kulkarni
- Bioprospecting Group
- Agharkar Research Institute
- Pune 411 004
- India
| | - Dhananjay Bodas
- Nanobioscience Group
- Agharkar Research Institute
- Pune 411 004
- India
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Immobilizing PEO–PPO–PEO triblock copolymers on hydrophobic surfaces and its effect on protein and platelet: A combined study using QCM-D and DPI. Colloids Surf B Biointerfaces 2014; 123:892-9. [DOI: 10.1016/j.colsurfb.2014.10.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/20/2014] [Accepted: 10/20/2014] [Indexed: 01/06/2023]
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