101
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Rapid Generation of Cell Gradients by Utilizing Solely Nanotopographic Interactions on a Bio-Inert Glass Surface. Angew Chem Int Ed Engl 2014; 53:2915-8. [DOI: 10.1002/anie.201309974] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Indexed: 12/17/2022]
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102
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Yang G, Cao Y, Fan J, Liu H, Zhang F, Zhang P, Huang C, Jiang L, Wang S. Rapid Generation of Cell Gradients by Utilizing Solely Nanotopographic Interactions on a Bio-Inert Glass Surface. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309974] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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103
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Synthesis and Characterization of PEDOT Derivative with Carboxyl Group and Its Chemo/Bio Sensing Application as Nanocomposite, Immobilized Biological and Enhanced Optical Materials. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.11.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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104
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Cell detachment: Post-isolation challenges. Biotechnol Adv 2013; 31:1664-75. [DOI: 10.1016/j.biotechadv.2013.08.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 08/17/2013] [Accepted: 08/17/2013] [Indexed: 12/16/2022]
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105
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Yu X, He R, Li S, Cai B, Zhao L, Liao L, Liu W, Zeng Q, Wang H, Guo SS, Zhao XZ. Magneto-controllable capture and release of cancer cells by using a micropillar device decorated with graphite oxide-coated magnetic nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3895-3901. [PMID: 23650272 DOI: 10.1002/smll.201300169] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/05/2013] [Indexed: 06/02/2023]
Abstract
Aiming to highly efficient capture and analysis of circulating tumor cells, a micropillar device decorated with graphite oxide-coated magnetic nanoparticles is developed for magneto-controllable capture and release of cancer cells. Graphite oxide-coated, Fe3 O4 magnetic nanoparticles (MNPs) are synthesized by solution mixing and functionalized with a specific antibody, following by the immobilization of such modified MNPs on our designed micropillar device. For the proof-of-concept study, a HCT116 colorectal cancer cell line is employed to exam the capture efficiency. Under magnetic field manipulation, the high density packing of antibody-modified MNPs on the micropillars increases the local concentration of antibody, as well as the topographic interactions between cancer cells and micropillar surfaces. The flow rate and the micropillar geometry are optimized by studying their effects on capture efficiency. Then, a different number of HCT116 cells spiked in two kinds of cell suspension are investigated, yielding capture efficiency >70% in culture medium and >40% in blood sample, respectively. Moreover, the captured HCT116 cells are able to be released from the micropillars with a saturated efficiency of 92.9% upon the removal of applied magnetic field and it is found that 78% of the released cancer cells are viable, making them suitable for subsequent biological analysis.
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Affiliation(s)
- Xiaolei Yu
- Key Laboratory of Artificial Micro- and Nano-Structures of the Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, Hubei, China
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106
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Biofunctionalisation of electrically conducting polymers. Drug Discov Today 2013; 19:88-94. [PMID: 23962478 DOI: 10.1016/j.drudis.2013.07.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/26/2013] [Accepted: 07/31/2013] [Indexed: 11/21/2022]
Abstract
During a single decade of research, evidence has emerged that glial scar formation around the electro-tissue interface drives neural loss and increases the signal impedance of the electrodes, compromising the efficiency of the stimulating systems. Studies with conducting polymers (CPs) as electrode coatings have shown enhanced tissue integration and electrode performance in situ through biochemical and physicomechanical functionalisation. In this review, recent findings on CP modifications are provided in the context of neurospecific biomaterials, shedding light on the valuable impact of multifunctionalised strategies for biomedical applications.
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107
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Wang L, Asghar W, Demirci U, Wan Y. Nanostructured substrates for isolation of circulating tumor cells. NANO TODAY 2013; 8:347-387. [PMID: 24944563 PMCID: PMC4059613 DOI: 10.1016/j.nantod.2013.07.001] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Circulating tumor cells (CTCs) originate from the primary tumor mass and enter into the peripheral bloodstream. CTCs hold the key to understanding the biology of metastasis and also play a vital role in cancer diagnosis, prognosis, disease monitoring, and personalized therapy. However, CTCs are rare in blood and hard to isolate. Additionally, the viability of CTCs can easily be compromised under high shear stress while releasing them from a surface. The heterogeneity of CTCs in biomarker expression makes their isolation quite challenging; the isolation efficiency and specificity of current approaches need to be improved. Nanostructured substrates have emerged as a promising biosensing platform since they provide better isolation sensitivity at the cost of specificity for CTC isolation. This review discusses major challenges faced by CTC isolation techniques and focuses on nanostructured substrates as a platform for CTC isolation.
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Affiliation(s)
- Lixue Wang
- Department of Oncology, The Second Affiliated Hospital of Southeast University, Southeast University, Nanjing, Jiangsu 210003, PR China
| | - Waseem Asghar
- Bio-Acoustic MEMS in Medicine (BAMM) Laboratories, Center for Biomedical Engineering, Renal Division and Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Utkan Demirci
- Bio-Acoustic MEMS in Medicine (BAMM) Laboratories, Center for Biomedical Engineering, Renal Division and Division of Infectious Diseases, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Harvard-Massachusetts Institute of Technology (MIT), Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Yuan Wan
- Department of Oncology, The Second Affiliated Hospital of Southeast University, Southeast University, Nanjing, Jiangsu 210003, PR China
- Ian Wark Research Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
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108
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Ren K, Banaei N, Zare RN. Sorting inactivated cells using cell-imprinted polymer thin films. ACS NANO 2013; 7:6031-6. [PMID: 23725546 PMCID: PMC3722270 DOI: 10.1021/nn401768s] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Previous work showed that cell imprinting in a poly(dimethylsiloxane) film produced artificial receptors to cells by template-assisted rearrangement of functional groups on the surface of the polymer thin film which facilitated cell capture in the polymer surface indentations by size, shape, and, most importantly, chemical recognition. We report here that inactivation of cells by treatment with formaldehyde (4%), glutaraldehyde (2%), or a combination of the two leads to markedly improved capture selectivity (a factor of 3) when cells to be analyzed are inactivated in the same manner. The enhanced capture efficiency compared to living cells results from two factors: (1) rigidification of the cell surface through cross-linking of amine groups by the aldehyde; and (2) elimination of chemicals excreted from living cells which interfere with the fidelity of the cell-imprinting process. Moreover, cell inactivation has the advantage of removing biohazard risks associated with working with virulent bacteria. These results are demonstrated using different strains of Mycobacterium tuberculosis.
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Affiliation(s)
- Kangning Ren
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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109
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Zhang P, Chen L, Xu T, Liu H, Liu X, Meng J, Yang G, Jiang L, Wang S. Programmable fractal nanostructured interfaces for specific recognition and electrochemical release of cancer cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:3566-3570. [PMID: 23716475 DOI: 10.1002/adma.201300888] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 04/22/2013] [Indexed: 06/02/2023]
Abstract
Topographic recognition of cancer cells is triggered by fractal gold nanostructures (FAuNSs), leading to dramatically enhanced recognition capability and efficient release of cancer cells with little damage. The unique characteristic of FAuNSs is the similar fractal dimension of their surface and that of a cancer cell. The design of fractal nanostructures will open up opportunities for functional design of bio-interfaces for highly efficient recognition and release of disease-related rare cells, which will improve detection in a clinical environment.
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Affiliation(s)
- Pengchao Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China; University of the Chinese Academy of Sciences, Beijing 100049, P. R. China
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110
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Oh WK, Kwon OS, Jang J. Conducting Polymer Nanomaterials for Biomedical Applications: Cellular Interfacing and Biosensing. POLYM REV 2013. [DOI: 10.1080/15583724.2013.805771] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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111
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He R, Zhao L, Liu Y, Zhang N, Cheng B, He Z, Cai B, Li S, Liu W, Guo S, Chen Y, Xiong B, Zhao XZ. Biocompatible TiO2 nanoparticle-based cell immunoassay for circulating tumor cells capture and identification from cancer patients. Biomed Microdevices 2013; 15:617-626. [DOI: 10.1007/s10544-013-9781-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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112
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Nie C, Zhu C, Feng L, Lv F, Liu L, Wang S. Synthesis of a new conjugated polymer for DNA alkylation and gene regulation. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4549-4554. [PMID: 23548104 DOI: 10.1021/am4001985] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A new polyfluorene derivative containing pendent alkylating chlorambucil (PFP-Cbl) was synthesized and characterized. Under direct incubation with DNA in vitro, PFP-Cbl could undergo an efficient DNA alkylating reaction and induce DNA cross-linking. In vitro transcription and translation experiment exhibited that the PFP-Cbl significantly down-regulated the gene expression of luciferase reporter plasmid. The down-regulation of gene expression was also verified through the transfection experiment of p-EGFP plasmid, which showed decreased green fluorescent protein (GFP) in cells. Meanwhile, the self-luminous property of PFP-Cbl could make it able to trace the internalized PFP-Cbl and plasmid complexes resulted from cross-linking in cells by fluorescent microscopy. Combining the features of alkylating function, multivalent binding sites, and fluorescent characteristics, PFP-Cbl provides a new insight in the area of gene regulation and extends the new applications of conjugated polymers (CPs).
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Affiliation(s)
- Chenyao Nie
- Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P R China
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113
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Zhao H, Zhu B, Luo SC, Lin HA, Nakao A, Yamashita Y, Yu HH. Controlled protein absorption and cell adhesion on polymer-brush-grafted poly(3,4-ethylenedioxythiophene) films. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4536-4543. [PMID: 23573953 DOI: 10.1021/am400135c] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Tailoring the surface of biometallic implants with protein-resistant polymer brushes represents an efficient approach to improve the biocompability and mechanical compliance with soft human tissues. A general approach utilizing electropolymerization to form initiating group (-Br) containing poly(3,4-ethylenedioxythiophen)s (poly(EDOT)s) is described. After the conducting polymer is deposited, neutral poly((oligo(ethylene glycol) methacrylate), poly(OEGMA), and zwitterionic poly([2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide), poly(SBMA), brushes are grafted by surface-initiated atom transfer radical polymerization. Quartz crystal microbalance (QCM) experiments confirm protein resistance of poly(OEGMA) and poly(SBMA)-grafted poly(EDOT)s. The protein binding properties of the surface are modulated by the density of polymer brushes, which is controlled by the feed content of initiator-containing monomer (EDOT-Br) in the monomer mixture solution for electropolymerization. Furthermore, these polymer-grafted poly(EDOT)s also prevent cells to adhere on the surface.
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Affiliation(s)
- Haichao Zhao
- Yu Initiative Research Unit, RIKEN Advanced Science Institute, Wako, Saitama, Japan.
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114
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Zhao L, Lu YT, Li F, Wu K, Hou S, Yu J, Shen Q, Wu D, Song M, OuYang WH, Luo Z, Lee T, Fang X, Shao C, Xu X, Garcia MA, Chung LWK, Rettig M, Tseng HR, Posadas EM. High-purity prostate circulating tumor cell isolation by a polymer nanofiber-embedded microchip for whole exome sequencing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:2897-902. [PMID: 23529932 PMCID: PMC3875622 DOI: 10.1002/adma.201205237] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/21/2013] [Indexed: 05/17/2023]
Abstract
Handpick single cancer cells: a modified NanoVelcro Chip is coupled with ArcturusXT laser capture microdissection (LCM) technology to enable the detection and isolation of single circulating tumor cells (CTCs) from patients with prostate cancer (PC). This new approach paves the way for conducting next-generation sequencing (NGS) on single CTCs.
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Affiliation(s)
| | | | | | - Kui Wu
- BGI-ShenZhen, 2 F, Building No. 11, Beishan Industrial Zone, Yantian District Shenzhen 518083, China
| | - Shuang Hou
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Juehua Yu
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Qinglin Shen
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Dongxia Wu
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Min Song
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Wei-Han OuYang
- CytoLumina Technologies Corp. 21038 Commerce Point Dr. Walnut, California 91789, USA
| | - Zheng Luo
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Tom Lee
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Xiaohong Fang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, Beiyi Street 2#, Zhongguancun, Beijing, 100190 (P.R. China)
| | - Chen Shao
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xun Xu
- BGI-ShenZhen, 2 F, Building No. 11, Beishan Industrial Zone, Yantian District Shenzhen 518083, China
| | - Mitch A. Garcia
- CytoLumina Technologies Corp. 21038 Commerce Point Dr. Walnut, California 91789, USA
| | - Leland W. K. Chung
- Urologic Oncology Program & Uro-Oncology Research Program; Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center 8700 Beverly Blvd. Los Angeles, California 90048, USA
| | - Matthew Rettig
- Departments of Medicine and Urology, Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Chief, Division of Hematology-Oncology, VA Greater Los Angeles Healthcare System
| | - Hsian-Rong Tseng
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California at Los Angeles 570 Westwood Plaza, Build 114, Los Angeles, California 90095-1770, USA
| | - Edwin M. Posadas
- Urologic Oncology Program & Uro-Oncology Research Program; Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center 8700 Beverly Blvd. Los Angeles, California 90048, USA
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115
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Banerjee SS, Jalota‐Badhwar A, Satavalekar SD, Bhansali SG, Aher ND, Mascarenhas RR, Paul D, Sharma S, Khandare JJ. Transferrin-mediated rapid targeting, isolation, and detection of circulating tumor cells by multifunctional magneto-dendritic nanosystem. Adv Healthc Mater 2013. [PMID: 23184885 DOI: 10.1002/adhm.201200164] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A multicomponent magneto-dendritic nanosystem (MDNS) is designed for rapid tumor cell targeting, isolation, and high-resolution imaging by a facile bioconjugation approach. The highly efficient and rapid-acting MDNS provides a convenient platform for simultaneous isolation and high-resolution imaging of tumor cells, potentially leading towards an early diagnosis of cancer.
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Affiliation(s)
- Shashwat S. Banerjee
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | | | - Sneha D. Satavalekar
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Sujit G. Bhansali
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Naval D. Aher
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Russel R. Mascarenhas
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Debjani Paul
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Somesh Sharma
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
| | - Jayant J. Khandare
- NCE‐Polymer Chemistry Group, Piramal Healthcare Ltd., Goregaon, Mumbai‐400063, India
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116
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Liu H, Li Y, Sun K, Fan J, Zhang P, Meng J, Wang S, Jiang L. Dual-Responsive Surfaces Modified with Phenylboronic Acid-Containing Polymer Brush To Reversibly Capture and Release Cancer Cells. J Am Chem Soc 2013; 135:7603-9. [DOI: 10.1021/ja401000m] [Citation(s) in RCA: 321] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hongliang Liu
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Yingying Li
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Kang Sun
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Junbing Fan
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Pengchao Zhang
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- University of Chinese Academy of Sciences, Beijing 100049, P. R.
China
| | - Jingxin Meng
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Shutao Wang
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Lei Jiang
- Beijing National Laboratory for Molecular
Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
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117
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Shen Q, Xu L, Zhao L, Wu D, Fan Y, Zhou Y, OuYang WH, Xu X, Zhang Z, Song M, Lee T, Garcia MA, Xiong B, Hou S, Tseng HR, Fang X. Specific capture and release of circulating tumor cells using aptamer-modified nanosubstrates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:2368-73. [PMID: 23495071 PMCID: PMC3786685 DOI: 10.1002/adma.201300082] [Citation(s) in RCA: 226] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Indexed: 05/19/2023]
Affiliation(s)
- Qinglin Shen
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Wuhan, Hubei, 430071 (P. R. China); Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Li Xu
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, Beiyi Street 2#, Zhongguancun, Beijing, 100190 (P.R. China)
| | - Libo Zhao
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, Beiyi Street 2#, Zhongguancun, Beijing, 100190 (P.R. China)
| | - Dongxia Wu
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Yunshan Fan
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Yiliang Zhou
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Wei-Han OuYang
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Xiaochun Xu
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Zhen Zhang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, Beiyi Street 2#, Zhongguancun, Beijing, 100190 (P.R. China)
| | - Min Song
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Tom Lee
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Mitch A. Garcia
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Bin Xiong
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Wuhan, Hubei, 430071 (P. R. China)
| | - Shuang Hou
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Hsian-Rong Tseng
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Web: http://tseng-lab.com
| | - Xiaohong Fang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, Beiyi Street 2#, Zhongguancun, Beijing, 100190 (P.R. China)
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118
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Hou S, Zhao H, Zhao L, Shen Q, Wei KS, Suh DY, Nakao A, Garcia MA, Song M, Lee T, Xiong B, Luo SC, Tseng HR, Yu HH. Capture and stimulated release of circulating tumor cells on polymer-grafted silicon nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:1547-51. [PMID: 23255101 PMCID: PMC3786692 DOI: 10.1002/adma.201203185] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Indexed: 05/20/2023]
Abstract
A platform for capture and release of circulating tumor cells is demonstrated by utilizing polymer grafted silicon nanowires. In this platform, integration of ligand-receptor recognition, nanostructure amplification, and thermal responsive polymers enables a highly efficient and selective capture of cancer cells. Subsequently, these captured cells are released upon a physical stimulation with outstanding cell viability.
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Affiliation(s)
| | | | - Libo Zhao
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Qinglin Shen
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
- Department of Oncology, Zhongnan Hospital, Wuhan University, Wuhan (China)
| | - Kevin S. Wei
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Daniel Y. Suh
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Aiko Nakao
- RNC Industrial Cooperation Team, RIKEN, Wako, Saitama 351-0198 (JAPAN)
| | - Mitch A. Garcia
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Min Song
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Tom Lee
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA)
| | - Bin Xiong
- Department of Oncology, Zhongnan Hospital, Wuhan University, Wuhan (China)
| | - Shyh-Chyang Luo
- Yu Initiative Research Unit, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (JAPAN), Fax: (+81) (0)48-462-1659, Web: http://www.riken.jp/lab/yuiru/,
| | - Hsian-Rong Tseng
- Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI), Institute for Molecular Medicine (IMED), University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los Angeles, CA 90095-1770 (USA), Fax: (+1) 310-206-8975, Web: http://labs.pharmacology.ucla.edu/tsenglab/,
| | - Hsiao-hua Yu
- Yu Initiative Research Unit, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (JAPAN), Fax: (+81) (0)48-462-1659, Web: http://www.riken.jp/lab/yuiru/,
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119
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Hou S, Zhao L, Shen Q, Yu J, Ng C, Kong X, Wu D, Song M, Shi X, Xu X, OuYang WH, He R, Zhao XZ, Lee T, Brunicardi FC, Garcia MA, Ribas A, Lo RS, Tseng HR. Polymer nanofiber-embedded microchips for detection, isolation, and molecular analysis of single circulating melanoma cells. Angew Chem Int Ed Engl 2013; 52:3379-83. [PMID: 23436302 PMCID: PMC3807678 DOI: 10.1002/anie.201208452] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 12/20/2012] [Indexed: 12/19/2022]
Affiliation(s)
- Shuang Hou
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA, Web: http://www.tseng-lab.com
| | - Libo Zhao
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
| | - Qinglin Shen
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
- Department of Applied Physics and Department of Oncology Surgery,
Wuhan University, Wuhan, PRC
| | - Juehua Yu
- Department of Surgery, University of California, Los Angeles
| | - Charles Ng
- Division of Hematology and Oncology, Department of Medicine,
Department of Surgery, and Department of Molecular and Medical Pharmacology,
University of California, Los Angeles
| | - Xiangju Kong
- Division of Dermatology, Department of Medicine, University of
California, Los Angeles
| | - Dongxia Wu
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
| | - Min Song
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
| | - Xiaohong Shi
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
| | - Xiaochun Xu
- CytoLumina Technologies Corp., 21038 Commerce Point Dr., Walnut,
CA 91789, USA
| | - Wei-Han OuYang
- CytoLumina Technologies Corp., 21038 Commerce Point Dr., Walnut,
CA 91789, USA
| | - Rongxian He
- Department of Applied Physics and Department of Oncology Surgery,
Wuhan University, Wuhan, PRC
| | - Xing-Zhong Zhao
- Department of Applied Physics and Department of Oncology Surgery,
Wuhan University, Wuhan, PRC
| | - Tom Lee
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
| | | | - Mitch André Garcia
- CytoLumina Technologies Corp., 21038 Commerce Point Dr., Walnut,
CA 91789, USA
| | - Antoni Ribas
- Division of Hematology and Oncology, Department of Medicine,
Department of Surgery, and Department of Molecular and Medical Pharmacology,
University of California, Los Angeles
| | - Roger S. Lo
- Division of Dermatology, Department of Medicine, University of
California, Los Angeles
| | - Hsian-Rong Tseng
- Department of Molecular and Medical Pharmacology, Crump Institute
for Molecular Imaging (CIMI), California NanoSystems Institute (CNSI),
University of California, Los Angeles, 570 Westwood Plaza, Building 114, Los
Angeles, CA 90095-1770, USA
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120
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Hou S, Zhao L, Shen Q, Yu J, Ng C, Kong X, Wu D, Song M, Shi X, Xu X, OuYang WH, He R, Zhao XZ, Lee T, Brunicardi FC, Garcia MA, Ribas A, Lo RS, Tseng HR. Polymer Nanofiber-Embedded Microchips for Detection, Isolation, and Molecular Analysis of Single Circulating Melanoma Cells. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208452] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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121
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Liu H, Liu X, Meng J, Zhang P, Yang G, Su B, Sun K, Chen L, Han D, Wang S, Jiang L. Hydrophobic interaction-mediated capture and release of cancer cells on thermoresponsive nanostructured surfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:922-7. [PMID: 23161781 DOI: 10.1002/adma.201203826] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Indexed: 05/16/2023]
Affiliation(s)
- Hongliang Liu
- Beijing National Laboratory for Molecular, Sciences-BNLMS, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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122
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Tan H, Xiao C, Sun J, Xiong D, Hu X. Biological self-assembly of injectable hydrogel as cell scaffold via specific nucleobase pairing. Chem Commun (Camb) 2013; 48:10289-91. [PMID: 22983594 DOI: 10.1039/c2cc35449g] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A biological hydrogel was self-assembled via Watson-Crick base pairing of thymine and adenine from functionalized star poly(ethylene glycol). Our work should provide a novel methodology to generate robust injectable scaffolds with tailorable properties for biomedical applications.
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Affiliation(s)
- Huaping Tan
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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123
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Chen W, Weng S, Zhang F, Allen S, Li X, Bao L, Lam RHW, Macoska JA, Merajver SD, Fu J. Nanoroughened surfaces for efficient capture of circulating tumor cells without using capture antibodies. ACS NANO 2013; 7. [PMID: 23194329 PMCID: PMC3962680 DOI: 10.1021/nn304719q] [Citation(s) in RCA: 173] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Circulating tumor cells (CTCs) detached from both primary and metastatic lesions represent a potential alternative to invasive biopsies as a source of tumor tissue for the detection, characterization and monitoring of cancers. Here we report a simple yet effective strategy for capturing CTCs without using capture antibodies. Our method uniquely utilized the differential adhesion preference of cancer cells to nanorough surfaces when compared to normal blood cells and thus did not depend on their physical size or surface protein expression, a significant advantage as compared to other existing CTC capture techniques.
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Affiliation(s)
- Weiqiang Chen
- Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shinuo Weng
- Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Feng Zhang
- Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200030, China
| | - Steven Allen
- Department of Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Xiang Li
- Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Liwei Bao
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Raymond H. W. Lam
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong
| | - Jill A. Macoska
- Department of Urology, University of Michigan, Ann Arbor, MI 48109, USA
- University of Michigan Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sofia D. Merajver
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- University of Michigan Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jianping Fu
- Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Address Correspondence to:
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124
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Tan H, Shen Q, Jia X, Yuan Z, Xiong D. Injectable nanohybrid scaffold for biopharmaceuticals delivery and soft tissue engineering. Macromol Rapid Commun 2012; 33:2015-22. [PMID: 22941907 DOI: 10.1002/marc.201200360] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 08/02/2012] [Indexed: 11/10/2022]
Abstract
An injectable nanofibrous hydrogel scaffold integrated with growth factors (GFs) loaded polysaccharide nanoparticles was developed that specifically allows for targeted adipose-derived stem cells (ASCs) encapsulation and soft tissue engineering. The nanofibrous hydrogel was produced via biological conjugation of biotin-terminated star-shaped poly(ethylene glycol) (PEG-Biotin) and streptavidin-functionalized hyaluronic acid (HA-Streptavidin). The polysaccharide nanoparticles were noncovalently assembled via electrostatic interactions between low-molecular-weight heparin (LMWH) and N,N,N-trimethylchitosan chloride (TMC). Vascular endothelial growth factor (VEGF) was entrapped in the LMWH/TMC nanoparticles by affinity interactions with LMWH.
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Affiliation(s)
- Huaping Tan
- Department of Materials Science, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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125
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Zhou F, Li D, Wu Z, Song B, Yuan L, Chen H. Enhancing Specific Binding of L929 Fibroblasts: Effects of Multi-Scale Topography of GRGDY Peptide Modified Surfaces. Macromol Biosci 2012; 12:1391-400. [DOI: 10.1002/mabi.201200129] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Revised: 06/17/2012] [Indexed: 11/09/2022]
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126
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Banerjee SS, Paul D, Bhansali SG, Aher ND, Jalota-Badhwar A, Khandare J. Enhancing surface interactions with colon cancer cells on a transferrin-conjugated 3D nanostructured substrate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:1657-1663. [PMID: 22434693 DOI: 10.1002/smll.201102354] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 12/05/2011] [Indexed: 05/31/2023]
Abstract
A transferrin-conjugated PEG-Fe(3) O(4) nanostructured matrix is developed to explore cellular responses in terms of enhanced cell adhesion, specific interactions between ligands in the matrix and molecular receptors on the cell membrane, comparison of cell shapes on 2D and 3D surfaces, and effect of polymer architecture on cell adhesion. Integration of such advanced synthetic nanomaterials into a functionalized 3D matrix to control cell behavior on surfaces will have implications in nanomedicine.
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127
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Zhang N, Deng Y, Tai Q, Cheng B, Zhao L, Shen Q, He R, Hong L, Liu W, Guo S, Liu K, Tseng HR, Xiong B, Zhao XZ. Electrospun TiO2 nanofiber-based cell capture assay for detecting circulating tumor cells from colorectal and gastric cancer patients. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2756-60. [PMID: 22528884 DOI: 10.1002/adma.201200155] [Citation(s) in RCA: 249] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 02/16/2012] [Indexed: 05/18/2023]
Abstract
A nanostructured platform that combines electrospun TiO(2) nanofibers (TiNFs)-deposited substrate and cell-capture agent realizes significant capture of circulating tumor cells (CTCs). The enhanced local topographic interactions between the horizontally packed TiNFs deposited substrates and extracellular matrix scaffolds, in addition to anti-EpCAM/EpCAM biological recognition, contributes to the significantly enhanced capture efficiency compared to flat surfaces.
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Affiliation(s)
- Nangang Zhang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Hubei, PR China
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128
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Gao W, Sattayasamitsathit S, Uygun A, Pei A, Ponedal A, Wang J. Polymer-based tubular microbots: role of composition and preparation. NANOSCALE 2012; 4:2447-53. [PMID: 22374514 DOI: 10.1039/c2nr30138e] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The influence of the composition and electropolymerization conditions upon the propulsion of new template-prepared polymer-based bilayer microtubular microbots is described. The effects of different electropolymerized outer layers, including polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT), polyaniline (PANI), and of various inner catalytic metal surfaces (Ag, Pt, Au, Ni-Pt alloy), upon the movement of such bilayer microtubes are evaluated and compared. Electropolymerization conditions, such as the monomer concentration and medium (e.g. surfactant, electrolyte), have a profound effect upon the morphology and locomotion of the resulting microtubes. The most efficient propulsion is observed using PEDOT/Pt microbots that offer a record-breaking speed of over 1400 body lengths s(-1) at physiological temperature, which is the fastest relative speed reported to date for all artificial micro/nanomotors. An inner Pt-Ni alloy surface is shown useful for combining magnetic control and catalytic fuel decomposition within one layer, thus greatly simplifying the preparation of magnetically-guided microbots. Polymer-based microbots with an inner gold layer offer efficient biocatalytic propulsion in low peroxide level in connection to an immobilized catalase enzyme. Metallic Au/Pt bilayer microbots can also be prepared electrochemically to offer high speed propulsion towards potential biomedical applications through functionalization of the outer gold surface. Such rational template preparation and systematic optimization of highly efficient microbots hold considerable promise for diverse practical applications.
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Affiliation(s)
- Wei Gao
- Department of Nanoengineering, University of California San Diego, San Diego, CA 92093, USA
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