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Bakhshi MS, Rizwan M, Khan GJ, Duan H, Zhai K. Design of a novel integrated microfluidic chip for continuous separation of circulating tumor cells from peripheral blood cells. Sci Rep 2022; 12:17016. [PMID: 36220844 PMCID: PMC9554048 DOI: 10.1038/s41598-022-20886-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 09/20/2022] [Indexed: 12/29/2022] Open
Abstract
Cancer is one of the foremost causes of death globally. Late-stage presentation, inaccessible diagnosis, and treatment are common challenges in developed countries. Detection, enumeration of Circulating Tumor Cells (CTC) as early as possible can reportedly lead to more effective treatment. The isolation of CTC at an early stage is challenging due to the low probability of its presence in peripheral blood. In this study, we propose a novel two-stage, label-free, rapid, and continuous CTC separation device based on hydrodynamic inertial focusing and dielectrophoretic separation. The dominance and differential of wall-induced inertial lift force and Dean drag force inside a curved microfluidic channel results in size-based separation of Red Blood Cells (RBC) and platelets (size between 2-4 µm) from CTC and leukocytes (9-12.2 µm). A numerical model was used to investigate the mechanism of hydrodynamic inertial focusing in a curvilinear microchannel. Simulations were done with the RBCs, platelets, CTCs, and leukocytes (four major subtypes) to select the optimized value of the parameters in the proposed design. In first stage, the focusing behavior of microscale cells was studied to sort leukocytes and CTCs from RBCs, and platelets while viable CTCs were separated from leukocytes based on their inherent electrical properties using dielectrophoresis in the second stage. The proposed design of the device was evaluated for CTC separation efficiency using numerical simulations. This study considered the influence of critical factors like aspect ratio, dielectrophoretic force, channel size, flow rate, separation efficiency, and shape on cell separation. Results show that the proposed device yields viable CTC with 99.5% isolation efficiency with a throughput of 12.2 ml/h.
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Affiliation(s)
- Maliha Saleem Bakhshi
- grid.444938.60000 0004 0609 0078Mechatronics and Control Engineering Department, University of Engineering and Technology, Lahore, Pakistan
| | - Mohsin Rizwan
- grid.444938.60000 0004 0609 0078Mechatronics and Control Engineering Department, University of Engineering and Technology, Lahore, Pakistan
| | - Ghulam Jilany Khan
- grid.444936.80000 0004 0608 9608Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Hong Duan
- grid.263761.70000 0001 0198 0694School of Biological and Food Engineering, Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou, Anhui 234000 China
| | - Kefeng Zhai
- grid.263761.70000 0001 0198 0694School of Biological and Food Engineering, Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou, Anhui 234000 China ,grid.459584.10000 0001 2196 0260Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Guilin, 541004 People’s Republic of China
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Advances in aptamer-based nanomaterials for separation and analysis of non-genetic biomarkers in biofluids. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9955-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Kanioura A, Constantoudis V, Petrou P, Kletsas D, Tserepi A, Gogolides E, Chatzichristidi M, Kakabakos S. Oxygen plasma micro-nanostructured PMMA plates and microfluidics for increased adhesion and proliferation of cancer versus normal cells: The role of surface roughness and disorder. MICRO AND NANO ENGINEERING 2020. [DOI: 10.1016/j.mne.2020.100060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lin Z, Luo G, Du W, Kong T, Liu C, Liu Z. Recent Advances in Microfluidic Platforms Applied in Cancer Metastasis: Circulating Tumor Cells' (CTCs) Isolation and Tumor-On-A-Chip. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1903899. [PMID: 31747120 DOI: 10.1002/smll.201903899] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/13/2019] [Indexed: 05/03/2023]
Abstract
Cancer remains the leading cause of death worldwide despite the enormous efforts that are made in the development of cancer biology and anticancer therapeutic treatment. Furthermore, recent studies in oncology have focused on the complex cancer metastatic process as metastatic disease contributes to more than 90% of tumor-related death. In the metastatic process, isolation and analysis of circulating tumor cells (CTCs) play a vital role in diagnosis and prognosis of cancer patients at an early stage. To obtain relevant information on cancer metastasis and progression from CTCs, reliable approaches are required for CTC detection and isolation. Additionally, experimental platforms mimicking the tumor microenvironment in vitro give a better understanding of the metastatic microenvironment and antimetastatic drugs' screening. With the advancement of microfabrication and rapid prototyping, microfluidic techniques are now increasingly being exploited to study cancer metastasis as they allow precise control of fluids in small volume and rapid sample processing at relatively low cost and with high sensitivity. Recent advancements in microfluidic platforms utilized in various methods for CTCs' isolation and tumor models recapitulating the metastatic microenvironment (tumor-on-a-chip) are comprehensively reviewed. Future perspectives on microfluidics for cancer metastasis are proposed.
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Affiliation(s)
- Zhengjie Lin
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Guanyi Luo
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China
| | - Weixiang Du
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China
| | - Tiantian Kong
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China
| | - Changkun Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Zhou Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
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Kanioura A, Petrou P, Kletsas D, Tserepi A, Chatzichristidi M, Gogolides E, Kakabakos S. Three-dimensional (3D) hierarchical oxygen plasma micro/nanostructured polymeric substrates for selective enrichment of cancer cells from mixtures with normal ones. Colloids Surf B Biointerfaces 2019; 187:110675. [PMID: 31810566 DOI: 10.1016/j.colsurfb.2019.110675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 10/16/2019] [Accepted: 11/25/2019] [Indexed: 12/30/2022]
Abstract
The enrichment of cancer cell population when in mixtures with normal ones is of great importance for cancer diagnosis. In this work, poly(methyl methacrylate) films have been processed applying different oxygen plasma conditions to fabricate surfaces with structure height ranging from 22 to more than 2000 nm. The surfaces were then evaluated with respect to adhesion and proliferation of both normal and cancer human cells. In particular, normal skin and lung fibroblasts, and four different cancer cell lines, A431 (skin cancer), HT1080 (fibrosarcoma), A549 (lung cancer), and PC3 (prostate cancer), have been employed. It was found that adhesion and proliferation of cancer cells was favored when cultured onto the hierarchical micro/nanostructured surfaces as compared to untreated ones with the maximum values obtained for substrates treated at -100 V for 3 min. On the other hand, although the adhesion of normal fibroblasts was not influenced by the micro/nanostructured surfaces, their morphology and proliferation was significantly impaired, especially after 3-day culture on these surfaces. The reduced proliferation rate of adherent fibroblasts was linked to reduced focal points formation, as it was verified through vinculin staining, and not to apoptosis. The micro/nanostructured surfaces prepared with plasma treatment at -100 V for 3 min (hierarchical topography with mean height of ∼800 nm) were selected as substrates for normal and cancer cell co-culture experiments. It was found that 25-80 times enrichment of cancer over the normal cells was achieved on the nanostructured surfaces after 3-day culture, while it was 5-8 times lower on the untreated ones. It should be noticed that this is the first time such high enrichment ratios are achieved without implementing surfaces modified with binding molecules specific for cancer cells. Thus, the nanostructured surfaces hold a strong promise as culture substrates for separation and enrichment of cancer cells from mixtures with normal ones that should find application in cancer diagnostics.
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Affiliation(s)
- Anastasia Kanioura
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece
| | - Panagiota Petrou
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece
| | - Dimitris Kletsas
- Institute of Biosciences and Applications, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece
| | - Angeliki Tserepi
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece
| | | | - Evangelos Gogolides
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece
| | - Sotirios Kakabakos
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR "Demokritos", Aghia Paraskevi, 15341, Greece.
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Cho H, Kim J, Song H, Sohn KY, Jeon M, Han KH. Microfluidic technologies for circulating tumor cell isolation. Analyst 2019; 143:2936-2970. [PMID: 29796523 DOI: 10.1039/c7an01979c] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Metastasis is the main cause of tumor-related death, and the dispersal of tumor cells through the circulatory system is a critical step in the metastatic process. Early detection and analysis of circulating tumor cells (CTCs) is therefore important for early diagnosis, prognosis, and effective treatment of cancer, enabling favorable clinical outcomes in cancer patients. Accurate and reliable methods for isolating and detecting CTCs are necessary to obtain this clinical information. Over the past two decades, microfluidic technologies have demonstrated great potential for isolating and detecting CTCs from blood. The present paper reviews current advanced microfluidic technologies for isolating CTCs based on various biological and physical principles, and discusses their fundamental advantages and drawbacks for subsequent cellular and molecular assays. Owing to significant genetic heterogeneity among CTCs, microfluidic technologies for isolating individual CTCs have recently been developed. We discuss these single-cell isolation methods, as well as approaches to overcoming the limitations of current microfluidic CTC isolation technologies. Finally, we provide an overview of future innovative microfluidic platforms.
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Affiliation(s)
- Hyungseok Cho
- Department of Nanoscience and Engineering, Center for Nano Manufacturing, Inje University, Gimhae 621-749, Republic of Korea.
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Tang W, Jiang D, Li Z, Zhu L, Shi J, Yang J, Xiang N. Recent advances in microfluidic cell sorting techniques based on both physical and biochemical principles. Electrophoresis 2018; 40:930-954. [DOI: 10.1002/elps.201800361] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/28/2018] [Accepted: 09/30/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Wenlai Tang
- School of Electrical and Automation Engineering; Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Normal University; P. R. China
- Nanjing Institute of Intelligent High-end Equipment Industry Co., Ltd.; P. R. China
| | - Di Jiang
- School of Mechanical and Electronic Engineering; Nanjing Forestry University; P. R. China
| | - Zongan Li
- School of Electrical and Automation Engineering; Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Normal University; P. R. China
| | - Liya Zhu
- School of Electrical and Automation Engineering; Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Normal University; P. R. China
| | - Jianping Shi
- School of Electrical and Automation Engineering; Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Normal University; P. R. China
| | - Jiquan Yang
- School of Electrical and Automation Engineering; Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing; Nanjing Normal University; P. R. China
- Nanjing Institute of Intelligent High-end Equipment Industry Co., Ltd.; P. R. China
| | - Nan Xiang
- School of Mechanical Engineering; Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments; Southeast University; P. R. China
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8
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Li P, Dou X, Feng C, Schönherr H. Enhanced cell adhesion on a bio-inspired hierarchically structured polyester modified with gelatin-methacrylate. Biomater Sci 2018; 6:785-792. [PMID: 29210373 DOI: 10.1039/c7bm00991g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein, fabrication and modification of novel bio-inspired microwell arrays with nanoscale topographic structures are reported. The natural nano- and microstructures present on the surface of rose petals were hypothesized to enhance cell-surface contacts. Thus hierarchically structured polyethylene terephthalate glycol modified (PETG) substrates were fabricated by replication from rose petals via nanoimprint lithography, followed by covalent modification and crosslinking with RGD-presenting gelatin-methacrylate (GelMA) for promoting cell adhesion and spreading. Cell culture experiments showed that the introduction of gelatin resulted in significantly enhanced cell adhesion and more than doubled cell areas on the GelMA modified surfaces. In addition, a slight preference was observed for concave compared to convex surfaces, which is tentatively attributed to the matching curvature of the micro-cavities and the cells, facilitating the accommodation of cells. These bioinspired hierarchically structured and gelatin functionalized substrates may provide new prospects for designing cell-based interfaces for advanced biomedical studies, e.g. for cell culture and biosensing in the future.
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Affiliation(s)
- Ping Li
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany.
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Hao S, Ha L, Cheng G, Wan Y, Xia Y, Sosnoski DM, Mastro AM, Zheng SY. A Spontaneous 3D Bone-On-a-Chip for Bone Metastasis Study of Breast Cancer Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1702787. [PMID: 29399951 DOI: 10.1002/smll.201702787] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 11/27/2017] [Indexed: 05/10/2023]
Abstract
Bone metastasis occurs at ≈70% frequency in metastatic breast cancer. The mechanisms used by tumors to hijack the skeleton, promote bone metastases, and confer therapeutic resistance are poorly understood. This has led to the development of various bone models to investigate the interactions between cancer cells and host bone marrow cells and related physiological changes. However, it is challenging to perform bone studies due to the difficulty in periodic sampling. Herein, a bone-on-a-chip (BC) is reported for spontaneous growth of a 3D, mineralized, collagenous bone tissue. Mature osteoblastic tissue of up to 85 µm thickness containing heavily mineralized collagen fibers naturally formed in 720 h without the aid of differentiation agents. Moreover, co-culture of metastatic breast cancer cells is examined with osteoblastic tissues. The new bone-on-a-chip design not only increases experimental throughput by miniaturization, but also maximizes the chances of cancer cell interaction with bone matrix of a concentrated surface area and facilitates easy, frequent observation. As a result, unique hallmarks of breast cancer bone colonization, previously confirmed only in vivo, are observed. The spontaneous 3D BC keeps the promise as a physiologically relevant model for the in vitro study of breast cancer bone metastasis.
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Affiliation(s)
- Sijie Hao
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Laura Ha
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Gong Cheng
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yuan Wan
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Yiqiu Xia
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Donna M Sosnoski
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Andrea M Mastro
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Si-Yang Zheng
- Department of Biomedical Engineering, Micro & Nano Integrated Biosystem (MINIBio) Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA
- Penn State Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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Xu Y, Liu B, Ding F, Zhou X, Tu P, Yu B, He Y, Huang P. Circulating tumor cell detection: A direct comparison between negative and unbiased enrichment in lung cancer. Oncol Lett 2017; 13:4882-4886. [PMID: 28599490 DOI: 10.3892/ol.2017.6046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 02/03/2017] [Indexed: 11/06/2022] Open
Abstract
Circulating tumor cells (CTCs), isolated as a 'liquid biopsy', may provide important diagnostic and prognostic information. Therefore, rapid, reliable and unbiased detection of CTCs are required for routine clinical analyses. It was demonstrated that negative enrichment, an epithelial marker-independent technique for isolating CTCs, exhibits a better efficiency in the detection of CTCs compared with positive enrichment techniques that only use specific anti-epithelial cell adhesion molecules. However, negative enrichment techniques incur significant cell loss during the isolation procedure, and as it is a method that uses only one type of antibody, it is inherently biased. The detection procedure and identification of cell types also relies on skilled and experienced technicians. In the present study, the detection sensitivity of using negative enrichment and a previously described unbiased detection method was compared. The results revealed that unbiased detection methods may efficiently detect >90% of cancer cells in blood samples containing CTCs. By contrast, only 40-60% of CTCs were detected by negative enrichment. Additionally, CTCs were identified in >65% of patients with stage I/II lung cancer. This simple yet efficient approach may achieve a high level of sensitivity. It demonstrates a potential for the large-scale clinical implementation of CTC-based diagnostic and prognostic strategies.
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Affiliation(s)
- Yan Xu
- Department of Internal Medicine, Affiliated Zhongda Hospital, Southeast University School of Medicine, Nanjing, Jiangsu 210009, P.R. China
| | - Biao Liu
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210093, P.R. China
| | - Fengan Ding
- Department of Internal Medicine, Affiliated Zhongda Hospital, Southeast University School of Medicine, Nanjing, Jiangsu 210009, P.R. China
| | - Xiaodie Zhou
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210093, P.R. China
| | - Pin Tu
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210093, P.R. China
| | - Bo Yu
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210093, P.R. China
| | - Yan He
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210093, P.R. China
| | - Peilin Huang
- Department of Internal Medicine, Affiliated Zhongda Hospital, Southeast University School of Medicine, Nanjing, Jiangsu 210009, P.R. China
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Dou X, Li P, Jiang S, Bayat H, Schönherr H. Bioinspired Hierarchically Structured Surfaces for Efficient Capture and Release of Circulating Tumor Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8508-8518. [PMID: 28206737 DOI: 10.1021/acsami.6b16202] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The development of novel bioinspired surfaces with hierarchical micro- and nanoscale topographic structures for efficient capture and release of circulating tumor cells (CTCs) is reported. The capture of CTCs, facilitated by surface-immobilized epithelial cell adhesion molecule antibodies (anti-EpCAM), was shown to be significantly enhanced in novel three-dimensional hierarchically structured surfaces that were fabricated by replicating the natural micro- and nanostructures of rose petals. Under static conditions, these hierarchical capture substrates exhibited up to 6 times higher cell capture ability at concentrations of 100 cells mL-1 in contrast to flat anti-EpCAM-functionalized polydimethylsiloxane (PDMS) surfaces. As indicated by scanning electron microscopy (SEM) and immunofluorescent images, this enhancement can be in large part attributed to the topographical interaction between nanoscale cell surface components and nanostructures on the substrate. Similarly, the increased surface area affords a higher nominal coverage of anti-EpCAM, which increases the number of available binding sites for cell capture. By treating the substrates with the biocompatible reductant glutathione (GSH), up to 85% of the captured cells were released, which displayed over 98% cell viability after culturing on tissue culture polystyrene (TCP) for 24 h. Therefore, these bioinspired hierarchically structured and functionalized substrates can be successfully applied to capture CTCs, as well as release CTCs for subsequent analysis. These findings provide new prospects for designing cell-material interfaces for advanced cell-based biomedical studies in the future.
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Affiliation(s)
- Xiaoqiu Dou
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
| | - Ping Li
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
| | - Siyu Jiang
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
| | - Haider Bayat
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
| | - Holger Schönherr
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
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Islam M, Sajid A, Mahmood MAI, Bellah MM, Allen PB, Kim YT, Iqbal SM. Nanotextured polymer substrates show enhanced cancer cell isolation and cell culture. NANOTECHNOLOGY 2015; 26:225101. [PMID: 25961762 DOI: 10.1088/0957-4484/26/22/225101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Detection of circulating tumor cells (CTCs) in the early stages of cancer is a great challenge because of their exceedingly small concentration. There are only a few approaches sensitive enough to differentiate tumor cells from the plethora of other cells in a sample like blood. In order to detect CTCs, several antibodies and aptamers have already shown high affinity. Nanotexture can be used to mimic basement membrane to further enhance this affinity. This article reports an approach to fabricate nanotextured polydimethylsiloxane (PDMS) substrates using micro reactive ion etching (micro-RIE). Three recipes were used to prepare nanotextured PDMS using oxygen and carbon tetrafluoride. Micro-RIE provided better control on surface properties. Nanotexturing improved the affinity of PDMS surfaces to capture cancer cells using surface immobilized aptamers against cell membrane overexpressed with epidermal growth factor receptors. In all cases, nanotexture of PDMS increased the effective surface area by creating nanoscale roughness on the surface. Nanotexture also enhanced the growth rate of cultured cells compared to plain surfaces. A comparison among the three nanotextured surfaces demonstrated an almost linear relationship between the surface roughness and density of captured tumor cells. The nanotextured PDMS mimicked biophysical environments for cells to grow faster. This can have many implications in microfluidic platforms used for cell handling.
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Affiliation(s)
- Muhymin Islam
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA. Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76011, USA. Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA
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Chen S, Lu X, Huang Z, Lu Q. In situ growth of a polyphosphazene nanoparticle coating on a honeycomb surface: facile formation of hierarchical structures for bioapplication. Chem Commun (Camb) 2015; 51:5698-701. [DOI: 10.1039/c4cc10379c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclomatrix polyphosphazene nanoparticles are selectively grownin situon a honeycomb surface for the preparation of a hierarchical cell scaffold.
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Affiliation(s)
- Shuangshuang Chen
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
| | - Xuemin Lu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
| | - Zhangjun Huang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
| | - Qinghua Lu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai
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