1
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Xu CY, Zhen CQ, He YJ, Cui YY, Yang CX. Solvent and monomer regulation synthesis of core-shelled magnetic β-cyclodextrin microporous organic network for efficient extraction of estrogens in biological samples prior to HPLC analysis. J Chromatogr A 2024; 1728:464991. [PMID: 38788322 DOI: 10.1016/j.chroma.2024.464991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
The abnormal estrogens levels in human body can cause many side effects and diseases, but the quantitative detection of the trace estrogens in complex biological samples still remains great challenge. Here we reported the fabrication of a novel core-shell structured magnetic cyclodextrin microporous organic network (Fe3O4@CD-MON) for rapid magnetic solid phase extraction (MSPE) of four estrogens in human serum and urine samples prior to HPLC-UV determination. The uniform spherical core-shell Fe3O4@CD-MONs was successfully regulated by altering the reactive monomers and solvents. The Fe3O4@CD-MONs owned high specific surface area, good hydrophobicity, large superparamagnetism, and abundant extraction sites for estrogens. Under optimal conditions, the proposed MSPE-HPLC-UV method provided wide linearity range (2.0-400 μg L-1), low limits of detection (0.5-1.0 μg L-1), large enrichment factors (183-198), less adsorbent consumption (3 mg), short extraction time (3 min), and good stability and reusability (at least 8 cycles). The established method had also been successfully applied to the enrichment and detection of four estrogens in serum and urine samples with a recovery of 88.4-105.1 % and a relative standard deviation of 1.0-5.9 %. This work confirmed the feasibility of solvent and monomer regulation synthesis of Fe3O4@CD-MON composites, and revealed the great prospects of magnetic CD-MONs for efficient enrichment of trace estrogens in complex biological samples.
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Affiliation(s)
- Chun-Ying Xu
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
| | - Chang-Qing Zhen
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Yu-Jing He
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
| | - Yuan-Yuan Cui
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China.
| | - Cheng-Xiong Yang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China.
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2
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Rafiee Z, Rezaie M, Choi S. Combined electrical-electrochemical phenotypic profiling of antibiotic susceptibility of in vitro biofilm models. Analyst 2024; 149:3224-3235. [PMID: 38686667 DOI: 10.1039/d4an00393d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
More than 65% of bacterial infections are caused by biofilms. However, standard biofilm susceptibility tests are not available for clinical use. All conventional biofilm models suffer from a long formation time and fail to mimic in vivo microbial biofilm conditions. Moreover, biofilms make it difficult to monitor the effectiveness of antibiotics. This work creates a powerful yet simple method to form a target biofilm and develops an innovative approach to monitoring the antibiotic's efficacy against a biofilm-associated infection. A paper-based culture platform can provide a new strategy for rapid microbial biofilm formation through capillary action. A combined electrical-electrochemical technique monitors bacterial metabolism rapidly and reliably by measuring microbial extracellular electron transfer (EET) and using electrochemical impedance spectroscopy (EIS) across a microbe-electrode interface. Three representative pathogens, Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus, form their biofilms controllably within an hour. Within another hour their susceptibilities to three frontline antibiotics with different action modes (gentamicin, ciprofloxacin, and ceftazidime) are examined. Our antibiotic susceptibility testing (AST) technique provides a quantifiable minimum inhibitory concentration (MIC) of those antibiotics against the in vitro biofilm models and characterizes their action mechanisms. The results will have an important positive effect because they provide immediately actionable healthcare information at a reduced cost, revolutionizing public healthcare.
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Affiliation(s)
- Zahra Rafiee
- Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, New York, 13902, USA.
| | - Maryam Rezaie
- Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, New York, 13902, USA.
| | - Seokheun Choi
- Bioelectronics & Microsystems Laboratory, Department of Electrical & Computer Engineering, State University of New York at Binghamton, Binghamton, New York, 13902, USA.
- Center for Research in Advanced Sensing Technologies & Environmental Sustainability, State University of New York at Binghamton, Binghamton, New York, 13902, USA
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3
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Sitte Z, Miranda Buzetta AA, Jones SJ, Lin ZW, Whitman NA, Lockett MR. Paper-Based Coculture Platform to Evaluate the Effects of Fibroblasts on Estrogen Signaling in ER+ Breast Cancers. ACS MEASUREMENT SCIENCE AU 2023; 3:479-487. [PMID: 38145029 PMCID: PMC10740124 DOI: 10.1021/acsmeasuresciau.3c00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 12/26/2023]
Abstract
Cell-based assays enable molecular-level studies of cellular responses to drug candidates or potential toxins. Transactivation assays quantify the activation or inhibition of nuclear receptors, key transcriptional regulators of gene targets in mamalian cells. One such assay couples the expression of luciferase to the transcriptional activity of estrogen receptor-alpha (ERα). While this assay is regularly used to screen for agonists and antagonists of the estrogen signaling pathway, the setup relies on monolayer cultures in which cells are plated directly onto the surface of cell-compatible plasticware. The tumor microenvironment is more than a collection of cancerous cells and is profoundly influenced by tissue architecture, the presence of extracellular matrices, and intercellular signaling molecules produced by non-cancerous neighboring cells (e.g., fibroblasts). There exists a need for three-dimensional culture platforms that can be rapidly prototyped to assess new configurations and readily produced in the large numbers needed for translational studies and screening applications. Here, we demonstrate the utility of the paper-based culture platform to probe the effects of intercellular signaling between two cell types. We used paper scaffolds to generate tumor-like environments, forming a defined volume of breast cancer cells suspended in collagen. By placing the paper scaffolds in commercial 96-well plates, we compared monocultures of only breast cancer cells with coculture configurations containing fibroblasts in different locations that mimicked the stages of breast cancer progression. We show that ERα transactivation in the T47D-KBluc cell line is affected by the presence, number, and proximity of fibroblasts, and is a consequence of intercellular signaling molecules. After screening a small library of fibroblast-secreted signaling molecules, we showed that interleukin-6 (IL-6) was the primary driver of reduced estradiol sensitivity. These effects were mitigated in the coculture configurations by the addition of an IL-6 neutralizing antibody. We also assessed estrogen receptor expression and transcriptional regulation, further demonstrating the utility of the paper-based platform for detailed mechanistic studies.
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Affiliation(s)
- Zachary
R. Sitte
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Abel Andre Miranda Buzetta
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Sarina J. Jones
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Zhi-Wei Lin
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Nathan Ashbrook Whitman
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew R. Lockett
- Department
of Chemistry, University of North Carolina
at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, North Carolina 27599-3290, United States
- Lineberger
Comprehensive Cancer Center, University
of North Carolina at Chapel Hill, 450 West Drive, Chapel Hill, North Carolina 27599-7295, United States
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4
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Liu Y, Zhang X, Zhang P, He T, Zhang W, Ma D, Li P, Chen J. A high-throughput Gaussia luciferase reporter assay for screening potential gasdermin E activators against pancreatic cancer. Acta Pharm Sin B 2023; 13:4253-4272. [PMID: 37799380 PMCID: PMC10548051 DOI: 10.1016/j.apsb.2023.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 05/20/2023] [Accepted: 06/15/2023] [Indexed: 10/07/2023] Open
Abstract
It is discovered that activated caspase-3 tends to induce apoptosis in gasdermin E (GSDME)-deficient cells, but pyroptosis in GSDME-sufficient cells. The high GSDME expression and apoptosis resistance of pancreatic ductal adenocarcinoma (PDAC) cells shed light on another attractive strategy for PDAC treatment by promoting pyroptosis. Here we report a hGLuc-hGSDME-PCA system for high-throughput screening of potential GSDME activators against PDAC. This screening system neatly quantifies the oligomerization of GSDME-N to characterize whether pyroptosis occurs under the stimulation of chemotherapy drugs. Based on this system, ponatinib and perifosine are screened out from the FDA-approved anti-cancer drug library containing 106 compounds. Concretely, they exhibit the most potent luminescent activity and cause drastic pyroptosis in PDAC cells. Further, we demonstrate that perifosine suppresses pancreatic cancer by promoting pyroptosis via caspase-3/GSDME pathway both in vitro and in vivo. Collectively, this study reveals the great significance of hGLuc-hGSDME-PCA in identifying compounds triggering GSDME-dependent pyroptosis and developing promising therapeutic agents for PDAC.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xiaowei Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ping Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Tingting He
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Weitao Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Dingyuan Ma
- Department of Prenatal Diagnosis, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing 210004, China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jun Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
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5
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Li NT, Wu NC, Cao R, Cadavid JL, Latour S, Lu X, Zhu Y, Mijalkovic M, Roozitalab R, Landon-Brace N, Notta F, McGuigan AP. An off-the-shelf multi-well scaffold-supported platform for tumour organoid-based tissues. Biomaterials 2022; 291:121883. [DOI: 10.1016/j.biomaterials.2022.121883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 10/07/2022] [Accepted: 10/23/2022] [Indexed: 11/15/2022]
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6
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Costard LS, Hosn RR, Ramanayake H, O'Brien FJ, Curtin CM. Influences of the 3D microenvironment on cancer cell behaviour and treatment responsiveness: A recent update on lung, breast and prostate cancer models. Acta Biomater 2021; 132:360-378. [PMID: 33484910 DOI: 10.1016/j.actbio.2021.01.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/21/2022]
Abstract
The majority of in vitro studies assessing cancer treatments are performed in two-dimensional (2D) monolayers and are subsequently validated in in vivo animal models. However, 2D models fail to accurately model the tumour microenvironment. Furthermore, animal models are not directly applicable to mimic the human scenario. Three-dimensional (3D) culture models may help to address the discrepancies of 2D and animal models. When cancer cells escape the primary tumour, they can invade at distant organs building secondary tumours, called metastasis. The development of metastasis leads to a dramatic decrease in the life expectancy of patients. Therefore, 3D systems to model the microenvironment of metastasis have also been developed. Several studies have demonstrated changes in cell behaviour and gene expression when cells are cultured in 3D compared to 2D and concluded a better comparability to cells in vivo. Of special importance is the effect seen in response to anti-cancer treatments as models are built primarily to serve as drug-testing platforms. This review highlights these changes between cancer cells grown in 2D and 3D models for some of the most common cancers including lung, breast and prostate tumours. In addition to models aiming to mimic the primary tumour site, the effects of 3D cell culturing in bone metastasis models are also described. STATEMENT OF SIGNIFICANCE: Most in vitro studies in cancer research are performed in 2D and are subsequently validated in in vivo animal models. However, both models possess numerous limitations: 2D models fail to accurately model the tumour microenvironment while animal models are expensive, time-consuming and can differ considerably from humans. It is accepted that the cancer microenvironment plays a critical role in the disease, thus, 3D models have been proposed as a potential solution to address the discrepancies of 2D and animal models. This review highlights changes in cell behaviour, including proliferation, gene expression and chemosensitivity, between cancer cells grown in 2D and 3D models for some of the most common cancers including lung, breast and prostate cancer as well as bone metastasis.
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7
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Tang R, Liu L, Li M, Yao X, Yang Y, Zhang S, Li F. Transparent Microcrystalline Cellulose/Polyvinyl Alcohol Paper as a New Platform for Three-Dimensional Cell Culture. Anal Chem 2020; 92:14219-14227. [PMID: 32962346 DOI: 10.1021/acs.analchem.0c03458] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Multilayered and stacked cellulose paper has emerged as a promising platform for construction of three-dimensional (3D) cell culture because of its low cost, good biocompatibility, and high porosity. However, its poor light transmission makes it challenging to directly and clearly monitor cell behaviors (e.g., growth and proliferation) on the paper-based platform using an optical microscope. In this work, we developed a transparent microcrystalline cellulose/polyvinyl alcohol (MCC/PVA) paper with irregular pores through dissolution and regeneration of microcrystalline nanocellulose, addition of a porogen reagent (NaCl), and subsequently dipping in PVA solutions. The transparent MCC paper displays high porosity (up to 90%), adjustable pore size (between 23 and 46 μm), large thickness (from 315 to 436 μm), and high light transmission under water (>95%). Through further modification of the transparent MCC paper with PVA, the obtained transparent MCC/PVA paper shows enhanced mechanical properties (dry and wet strengths), good hydrophilicity (with a contact angle of 70.8°), and improved biocompatibility (cell viability up to 90%). By stacking and destacking multiple layers of the transparent MCC/PVA paper, it has been used for both two-dimensional and three-dimensional cell culture platforms. The transparent MCC/PVA paper under water enables both direct observation of cell morphology by an optical microscope via naked eyes and fluorescence microscope after staining. We envision that the developed transparent MCC/PVA paper holds great potential for future applications in various bioanalytical and biomedical fields, such as drug screening, tissue engineering, and organ-on-chips.
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Affiliation(s)
- Ruihua Tang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Lina Liu
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,Key Laboratory of Paper Based Functional Materials of China National Light Industry, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Min Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Xue Yao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Yaowei Yang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Sufeng Zhang
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China.,Key Laboratory of Paper Based Functional Materials of China National Light Industry, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Fei Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, P. R. China
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8
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Agarwal T, Borrelli MR, Makvandi P, Ashrafizadeh M, Maiti TK. Paper-Based Cell Culture: Paving the Pathway for Liver Tissue Model Development on a Cellulose Paper Chip. ACS APPLIED BIO MATERIALS 2020; 3:3956-3974. [DOI: 10.1021/acsabm.0c00558] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tarun Agarwal
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Mimi R. Borrelli
- Department of Surgery, Stanford University School of Medicine, Stanford, California 94305, United States
| | - Pooyan Makvandi
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (CNR), Naples 80078, Italy
| | - Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz 51666-16471, Iran
| | - Tapas Kumar Maiti
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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9
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Paper-supported Co-culture System for Investigation of Exosomes Mediated Interactions between Breast Cancer Cells and Lung Fibroblasts. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60025-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Boyce MW, Simke WC, Kenney RM, Lockett MR. Generating linear oxygen gradients across 3D cell cultures with block-layered oxygen controlled chips (BLOCCs). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:18-24. [PMID: 32190125 PMCID: PMC7079814 DOI: 10.1039/c9ay01690b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Oxygen is a transcriptional regulator responsible for tissue homeostasis and maintenance. Studies relating cellular phenotype with oxygen tension often use hypoxia chambers, which expose cells to a single, static oxygen tension. Despite their ease of use, these chambers are unable to replicate the oxygen gradients found in healthy and diseased tissues. Microfabricated devices capable of imposing an oxygen gradient across tissue-like structures are a promising tool for these studies, as they can provide a high density of information in a single experimental setup. We describe the fabrication and characterization of a modular device, which leverages the gas-permeability of silicone to impose gradients of oxygen across cell-containing regions, assembled by layering sheets of laser cut acrylic and silicone rubber. The silicone also acts as a barrier, separating the flowing gases from the cell culture medium, preventing evaporation or bubble formation in experiments that require prolonged periods of incubation. The acrylic components provide a rigid framework to provide a sterile culture environment. Using oxygen-sensing films, we show the device can support gradients of different ranges and steepness by simply changing the composition of the gases flowing through the silicone components of the BLOCC. Using a cell-based reporter assay, we demonstrate that cellular responses to hypoxia are proportional to oxygen tension.
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Affiliation(s)
- Matthew W Boyce
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, NC, 27599-3290, USA
| | - William C Simke
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, NC, 27599-3290, USA
| | - Rachael M Kenney
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, NC, 27599-3290, USA
| | - Matthew R Lockett
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, 125 South Road, Chapel Hill, NC, 27599-3290, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, 450 West Drive, Chapel Hill, NC 27599-7295, USA
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11
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Tobias F, McIntosh JC, LaBonia GJ, Boyce MW, Lockett MR, Hummon AB. Developing a Drug Screening Platform: MALDI-Mass Spectrometry Imaging of Paper-Based Cultures. Anal Chem 2019; 91:15370-15376. [PMID: 31755703 DOI: 10.1021/acs.analchem.9b03536] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Many potential chemotherapeutics fail to reach patients. One of the key reasons is that compounds are tested during the drug discovery stage in two-dimensional (2D) cell cultures, which are often unable to accurately model in vivo outcomes. Three-dimensional (3D) in vitro tumor models are more predictive of chemotherapeutic effectiveness than 2D cultures, and thus, their implementation during the drug screening stage has the potential to more accurately evaluate compounds earlier, saving both time and money. Paper-based cultures (PBCs) are an emerging 3D culture platform in which cells suspended in Matrigel are seeded into paper scaffolds and cultured to generate a tissue-like environment. In this study, we demonstrate the potential of matrix-assisted laser desorption/ionization-mass spectrometry imaging with PBCs (MALDI-MSI-PBC) as a drug screening platform. This method discriminated regions of the PBCs with and without cells and/or drugs, indicating that coupling PBCs with MALDI-MSI has the potential to develop rapid, large-scale, and parallel mass spectrometric drug screens.
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Affiliation(s)
- Fernando Tobias
- Department of Chemistry and Biochemistry and the Comprehensive Cancer Center , The Ohio State University , Columbus , Ohio 43210-1132 , United States
| | - Julie C McIntosh
- Department of Chemistry , The University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Gabriel J LaBonia
- Department of Chemistry and Biochemistry and the Harper Cancer Research Institute , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Matthew W Boyce
- Department of Chemistry , The University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Matthew R Lockett
- Department of Chemistry , The University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States.,Lineberger Comprehensive Cancer Center , The University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Amanda B Hummon
- Department of Chemistry and Biochemistry and the Comprehensive Cancer Center , The Ohio State University , Columbus , Ohio 43210-1132 , United States
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12
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Liu MM, Guo ZZ, Liu H, Li SH, Chen Y, Zhong Y, Lei Y, Lin XH, Liu AL. Paper-based 3D culture device integrated with electrochemical sensor for the on-line cell viability evaluation of amyloid-beta peptide induced damage in PC12 cells. Biosens Bioelectron 2019; 144:111686. [DOI: 10.1016/j.bios.2019.111686] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 12/11/2022]
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13
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Cramer SM, Larson TS, Lockett MR. Tissue Papers: Leveraging Paper-Based Microfluidics for the Next Generation of 3D Tissue Models. Anal Chem 2019; 91:10916-10926. [PMID: 31356054 PMCID: PMC7071790 DOI: 10.1021/acs.analchem.9b02102] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Paper-based scaffolds support the three-dimensional culture of mammalian cells in tissue-like environments. These Tissue Papers, a name that highlights the use of materials obtained from (plant) tissue to generate newly functioning (human) tissue structures, are a promising analytical tool to quantify cellular responses in physiologically relevant extracellular gradients and coculture architectures. Here, we highlight current examples of Tissue Papers, commonly used methods of analysis, and current measurement challenges.
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Affiliation(s)
- Sabrina M. Cramer
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, Chapel Hill, North Carolina 27599-3290, United States
| | - Tyler S. Larson
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew R. Lockett
- Department of Chemistry, University of North Carolina at Chapel Hill, Kenan and Caudill Laboratories, Chapel Hill, North Carolina 27599-3290, United States
- Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7295, United States
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14
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Hypoxia differentially regulates estrogen receptor alpha in 2D and 3D culture formats. Arch Biochem Biophys 2019; 671:8-17. [PMID: 31163125 DOI: 10.1016/j.abb.2019.05.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/24/2019] [Accepted: 05/30/2019] [Indexed: 02/07/2023]
Abstract
Hypoxia is a common feature in solid tumors. Clinical samples show a positive correlation between the expression of the hypoxia-inducible factor HIF-1α and estrogen receptor alpha (ERα) and a negative correlation between HIF-1α and hormone sensitivity. Results from monolayer cultures are in contention with clinical observations, showing that ER (+) cell lines no longer express ERα under hypoxic conditions (1% O2). Here, we compared the impact of hypoxia on the ERα signaling pathway for T47D cells in a 2D and 3D culture format. In the 2D format, the cells were cultured as monolayers. In the 3D format, paper-based scaffolds supported cells suspended in a collagen matrix. Using ELISA, Western blot, and immunofluorescence measurements, we show that hypoxia differentially regulates ERα protein levels in a culture environment-dependent manner. In the 2D format, the protein levels are significantly decreased in hypoxia. In the 3D format, the protein levels are maintained in hypoxia. Hypoxia reduced ERα transcriptional activation in both culture formats. These results highlight the importance of considering tissue dimensionality for in vitro studies. They also show that ERα protein levels in hypoxia are not an accurate indicator of ERα transcriptional activity, and confirm that a positive stain for ERα in a clinical sample may not necessarily indicate hormone sensitivity.
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15
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Wang M, Wang Y, Gao B, Bian Y, Liu X, He Z, Zeng Y, Du X, Gu Z. Fast Strategy to Functional Paper Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14445-14456. [PMID: 30907571 DOI: 10.1021/acsami.9b00512] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Paper, with advantages of low-cost, easy fabrication and disposal, flexibility and renewability, is a suitable substrate material for various applications. Functionalization and patterning on paper substrates are commonly required in many applications. Although many methods have been developed to achieve this, they typically suffer from some drawbacks such as time-consuming process, specific device dependence, lack of flexibility, low patterning resolution, and so forth. Herein, we present a general and fast method to functionalize paper sheets and create patterns. The whole modification process can be completed in 10 min and can be applied on various types of paper substrates and other natural materials such as natural fabrics. By our method, many commonly used functional groups can be covalently attached and patterned on paper substrates, while the characteristic features of the original paper substrates, for example, color, transparency, and conductivity, can be perfectly retained after modification to allow these properties to be incorporated into the resultant materials. High-resolution patterns can be created on paper by applying a photomask during the modification or controlling the time of modification to precisely control the functionality at any area on the obtained paper substrates. We also show the potential applications of our method in the fabrication of superhydrophobic coatings and biomaterials.
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Affiliation(s)
- Min Wang
- Department of Oncology, Nanjing First Hospital , Nanjing Medical University , Nanjing 210006 , China
| | | | - Bingbing Gao
- School of Pharmaceutical Sciences and School of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
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16
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Kenney RM, Loeser A, Whitman NA, Lockett MR. Paper-based Transwell assays: an inexpensive alternative to study cellular invasion. Analyst 2018; 144:206-211. [PMID: 30328422 PMCID: PMC6296866 DOI: 10.1039/c8an01157e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cellular movement is essential in the formation and maintenance of healthy tissues as well as in disease progression such as tumor metastasis. In this work, we describe a paper-based Transwell assay capable of quantifying cellular invasion through an extracellular matrix. The paper-based Transwell assays generate similar datasets, with equivalent reproducibility, to commercially available Transwell assays. With different culture configurations, we quantify invasion: upon addition of an exogenous factor or in the presence of medium obtained from other cell types, in an indirect or direct co-culture format whose medium composition is dynamically changing, and in a single-zone or parallel (96-zone) format.
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Affiliation(s)
- Rachael M Kenney
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, NC 27599-3290, USA.
| | - Adam Loeser
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, NC 27599-3290, USA.
| | - Nathan A Whitman
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, NC 27599-3290, USA.
| | - Matthew R Lockett
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, NC 27599-3290, USA. and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, 450 West Drive, Chapel Hill, NC 27599-7295, USA
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