1
|
Bani-Ahmad MM, Noor Azman NZ, Jasmine JNZ, Almarri HM, Alshipli M, Ramzun MR. Radiation attenuation ability of bentonite clay enriched with eggshell as recyclable waste for a physical rradiation barrier. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
2
|
Deepa A, Prakash P, Mishra BK. Performance of biochar-based filtration bed for the removal of Cr(VI) from pre-treated synthetic tannery wastewater. ENVIRONMENTAL TECHNOLOGY 2021; 42:257-269. [PMID: 31179905 DOI: 10.1080/09593330.2019.1626912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
In the present study, the performance of biochar-based filtration bed was assessed to enhance the removal efficiency of Cr(VI), from the pre-treated synthetic tannery wastewater. The pre-treatment of wastewater was carried out with aluminium formate (AF) as a coagulant and 80% Cr(VI) removal was observed which might be due to the formation of carboxylic complexation reaction. The purity of coagulant and the sludge components were validated with XRD analysis and the results revealed the formation of pure aluminium formate compound as well as a clear change in the crystalline structure in the treated sludge. FT-IR spectra demonstrated the carboxylic compound participated in the removal of Cr(VI) during the coagulation process. The pre-treated wastewater having 20 mg/L (residual) Cr(VI) was passed through a three-layered filtration bed containing biochar, which showed complete removal of Cr(VI) ∼ 99.99% by precipitating into bind form under the influence of CaCO3 and formate ions. The possible mechanistic approach might be due to the presence of formate ions in the pre-treated wastewater, the precipitation of Cr(VI) occurred in the form of Cr(OH)2 by the release of bicarbonate (HCO3-), carbonate ion (CO3 2-) and hydroxide (OH-) ions in the filtration bed. The properties of the biochar were investigated by XRD and FTIR analysis and the results revealed the existence of hydroxyl, carboxyl and carbonyl groups, which participated during the removal of Cr(VI). The results suggest that biochar-based filtration bed could be a promising method for the treatment of pre-treated tannery wastewater.
Collapse
Affiliation(s)
- Arukula Deepa
- Department of Environmental science and Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, India
| | - Prem Prakash
- Department of Environmental science and Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, India
| | - Brijesh Kumar Mishra
- Department of Environmental science and Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Jharkhand, India
| |
Collapse
|
3
|
Hart C, Didier CM, Sommerhage F, Rajaraman S. Biocompatibility of Blank, Post-Processed and Coated 3D Printed Resin Structures with Electrogenic Cells. BIOSENSORS 2020; 10:E152. [PMID: 33105886 PMCID: PMC7690614 DOI: 10.3390/bios10110152] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/31/2022]
Abstract
The widespread adaptation of 3D printing in the microfluidic, bioelectronic, and Bio-MEMS communities has been stifled by the lack of investigation into the biocompatibility of commercially available printer resins. By introducing an in-depth post-printing treatment of these resins, their biocompatibility can be dramatically improved up to that of a standard cell culture vessel (99.99%). Additionally, encapsulating resins that are less biocompatible with materials that are common constituents in biosensors further enhances the biocompatibility of the material. This investigation provides a clear pathway toward developing fully functional and biocompatible 3D printed biosensor devices, especially for interfacing with electrogenic cells, utilizing benchtop-based microfabrication, and post-processing techniques.
Collapse
Affiliation(s)
- Cacie Hart
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA; (C.H.); (C.M.D.); (F.S.)
- Department of Materials Science & Engineering, University of Central Florida, 12760 Pegasus Dr., Orlando, FL 32816, USA
| | - Charles M. Didier
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA; (C.H.); (C.M.D.); (F.S.)
- Burnett School of Biomedical Science, University of Central Florida, 6900 Lake Nona Blvd, Orlando, FL 32827, USA
| | - Frank Sommerhage
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA; (C.H.); (C.M.D.); (F.S.)
| | - Swaminathan Rajaraman
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA; (C.H.); (C.M.D.); (F.S.)
- Department of Materials Science & Engineering, University of Central Florida, 12760 Pegasus Dr., Orlando, FL 32816, USA
- Burnett School of Biomedical Science, University of Central Florida, 6900 Lake Nona Blvd, Orlando, FL 32827, USA
- Department of Electrical & Computer Engineering, University of Central Florida, 4328 Scorpius St., Orlando, FL 32816, USA
| |
Collapse
|
4
|
Inducement of a spontaneously wrinkled polydimethylsiloxane surface and its potential as a cell culture substrate. Colloids Surf B Biointerfaces 2018; 170:266-272. [PMID: 29935420 DOI: 10.1016/j.colsurfb.2018.06.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 05/22/2018] [Accepted: 06/15/2018] [Indexed: 01/09/2023]
Abstract
Spontaneous wrinkling of a polydimethylsiloxane (PDMS) surface was induced by repeated thermal shrinkage of liquid PDMS coated onto a cured PDMS layer. We investigated and evaluated the potential of the resulting surface as a cell culture substrate by monitoring the viability, spreading area, and proliferation rate of MG-63 cells cultured on native, wrinkled, and poly-L-lysine (PLL)-coated PDMS surfaces. Cells seeded on the wrinkled and PLL-coated PDMS surfaces spread and adhered better than those on native surfaces. The numbers of attached cells growing on wrinkled and PLL-coated PDMS surfaces were higher than those of cells on a native PDMS surface. The spreading area of cells on the wrinkled surface was similar to that of cells on the PLL-coated surface, and was much larger than that on native PDMS. The proliferation rate of cells on the wrinkled surface was more than double that of cells on native PDMS. Reverse-transcription polymerase chain reaction (RT-PCR) analysis of integrin mRNA expression showed that cells on the wrinkled surface were more tightly attached due to higher expression of the protein than exhibited in cells on native PDMS. Thus, the novel findings of this study are that the induction of a wrinkled PDMS surface through a simple curing process produces a suitable cell culture substrate without need of surface modification, and that its effectiveness is comparable to that of a PLL-coated PDMS surface.
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Hasan MR, Peri SSS, Sabane VP, Mansur N, Gao JX, Nguyen KT, Weidanz JA, Iqbal SM, Abhyankar VV. One-step fabrication of flexible nanotextured PDMS as a substrate for selective cell capture. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aa89a6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
7
|
Zhai TT, Ye D, Zhang QW, Wu ZQ, Xia XH. Highly Efficient Capture and Electrochemical Release of Circulating Tumor Cells by Using Aptamers Modified Gold Nanowire Arrays. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34706-34714. [PMID: 28925689 DOI: 10.1021/acsami.7b11107] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effective capture and release of circulating tumor cells (CTCs) is of significant importance in cancer prognose and treatment. Here we report a highly efficient method to capture and release human leukemic lymphoblasts (CCRF-CEM) using aptamers modified gold nanowire arrays (AuNWs). The gold nanowires, showing tunable morphologies from relatively random pillar deposit to relatively uniform arrays, were fabricated by electrochemical deposition using anodic aluminum oxide (AAO) as template. Upon simply being modified with aptamers by Au-S chemistry, the AuNWs exhibit higher specificity to target cells. Also compared to flat gold substrate, the AuNWs with nanostructure can capture target cells with much higher capture yield. Moreover, the captured CCRF-CEM cells can be released from AuNWs efficiently with little damage through an electrochemical desorption process. We predict that our strategy has great potential in providing a simple and economical platform for CTCs isolation, cancer diagnosis, and therapy.
Collapse
Affiliation(s)
- Ting-Ting Zhai
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Dekai Ye
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Qian-Wen Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Zeng-Qiang Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| |
Collapse
|
8
|
Mansur N, Raziul Hasan M, Kim YT, Iqbal SM. Functionalization of nanotextured substrates for enhanced identification of metastatic breast cancer cells. NANOTECHNOLOGY 2017; 28:385101. [PMID: 28703710 DOI: 10.1088/1361-6528/aa7f84] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Metastasis is the major cause of low survival rates among cancer patients. Once cancer cells metastasize, it is extremely difficult to contain the disease. We report on a nanotextured platform for enhanced detection of metastatic cells. We captured metastatic (MDA-MDB-231) and non-metastatic (MCF-7) breast cancer cells on anti-EGFR aptamer modified plane and nanotextured substrates. Metastatic cells were seen to change their morphology at higher rates when captured on nanotextured substrates than on plane substrates. Analysis showed statistically different morphological behaviors of metastatic cells that were very pronounced on the nanotextured substrates. Several distance matrices were calculated to quantify the dissimilarity of cell shape change. Nanotexturing increased the dissimilarity of the metastatic cells and as a result the contrast between metastatic and non-metastatic cells increased. Jaccard distance measurements found that the shape change ratio of the non-metastatic and metastatic cells was enhanced from 1:1.01 to 1:1.81, going from plane to nanotextured substrates. The shape change ratio of the non-metastatic to metastatic cells improved from 1:1.48 to 1:2.19 for the Hausdorff distance and from 1:1.87 to 1:4.69 for the Mahalanobis distance after introducing nanotexture. Distance matrix analysis showed that nanotexture increased the shape change ratios of non-metastatic and metastatic cells. Hence, the detectability of metastatic cells increased. These calculated matrices provided clear and explicit measures to discriminate single cells for their metastatic state on functional nanotextured substrates.
Collapse
Affiliation(s)
- Nuzhat Mansur
- Nano-Bio Lab, University of Texas at Arlington, Arlington, Texas 76019, United States of America. Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76019, United States of America. Nanotechnology Research Center, University of Texas at Arlington, Arlington, Texas 76019, United States of America
| | | | | | | |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
Islam M, Atmaramani R, Mukherjee S, Ghosh S, Iqbal SM. Enhanced proliferation of PC12 neural cells on untreated, nanotextured glass coverslips. NANOTECHNOLOGY 2016; 27:415501. [PMID: 27587351 DOI: 10.1088/0957-4484/27/41/415501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Traumatic injury to the central nervous system is a significant health problem. There is no effective treatment available partly because of the complexity of the system. Implementation of multifunctional micro- and nano-device based combinatorial therapeutics can provide biocompatible and tunable approaches to perform on-demand release of specific drugs. This can help the damaged cells to improve neuronal survival, regeneration of axons, and their reconnection to appropriate targets. Nano-topological features induced rapid cell growth is especially important towards the design of effective platforms to facilitate damaged neural circuit reconstruction. In this study, for the first time, feasibility of neuron-like PC12 cell growth on untreated and easy to prepare nanotextured surfaces has been carried out. The PC12 neuron-like cells were cultured on micro reactive ion etched nanotextured glass coverslips. The effect of nanotextured topology as physical cue for the growth of PC12 cells was observed exclusively, eliminating the possible influence(s) of the enhanced concentration of coated materials on the surface. The cell density was observed to increase by almost 200% on nanotextured coverslips compared to plain coverslips. The morphology study indicated that PC12 cell attachment and growth on the nanotextured substrates did not launch any apoptotic machinery of the cell. Less than 5% cells deformed and depicted condensed nuclei with apoptotic bodies on nanotextured surfaces which is typical for the normal cell handling and culture. Enhanced PC12 cell proliferation by such novel and easy to prepare substrates is not only attractive for neurite outgrowth and guidance, but may be used to increase the affinity of similar cancerous cells (ex: B35 neuroblastoma) and rapid proliferation thereafter-towards the development of combinatorial theranostics to diagnose and treat aggressive cancers like neuroblastoma.
Collapse
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
| | | | | | | | | |
Collapse
|
11
|
Ilyas A, Odatsu T, Shah A, Monte F, Kim HKW, Kramer P, Aswath PB, Varanasi VG. Amorphous Silica: A New Antioxidant Role for Rapid Critical-Sized Bone Defect Healing. Adv Healthc Mater 2016; 5:2199-213. [PMID: 27385056 PMCID: PMC6635139 DOI: 10.1002/adhm.201600203] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/25/2016] [Indexed: 12/23/2022]
Abstract
Traumatic fractures cause structurally unstable sites due to severe bone loss. Such fractures generate a high yield of reactive oxygen species (ROS) that can lead to oxidative stress. Excessive and prolonged ROS activity impedes osteoblast differentiation and instigates long healing times. Stimulation of antioxidants such as superoxide dismutase (SOD1), are crucial to reduce ROS, stimulate osteogenesis, and strengthen collagen and mineral formation. Yet, no current fixative devices have shown an ability to enhance collagen matrix formation through antioxidant expression. This study reports plasma-enhanced chemical vapor deposition based amorphous silicon oxynitride (Si(ON)x) as a potential new fracture healing biomaterial that adheres well to the implant surface, releases Si(+4) to enhance osteogenesis, and forms a surface hydroxyapatite for collagen mineral attachment. These materials provide a sustained release of Si(+4) in physiological environment for extended times. The dissolution rate partially depends on the film chemistry and can be controlled by varying O/N ratio. The presence of Si(+4) enhances SOD1, which stimulates other osteogenic markers downstream and leads to rapid mineral formation. In vivo testing using a rat critical-sized calvarial defect model shows a more rapid bone-regeneration for these biomaterials as compared to control groups, that implies the clinical significance of the presented biomaterial.
Collapse
Affiliation(s)
- Azhar Ilyas
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
| | - Tetsuro Odatsu
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1, Sakamoto, Nagasaki, 852-8588, Japan
| | - Ami Shah
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Felipe Monte
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, Dallas, TX, 75219, USA
| | - Harry K W Kim
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, Dallas, TX, 75219, USA
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, 75390, USA
| | - Philip Kramer
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
| | - Pranesh B Aswath
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Venu G Varanasi
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA.
| |
Collapse
|
12
|
Asghar W, El Assal R, Shafiee H, Pitteri S, Paulmurugan R, Demirci U. Engineering cancer microenvironments for in vitro 3-D tumor models. MATERIALS TODAY (KIDLINGTON, ENGLAND) 2015; 18:539-553. [PMID: 28458612 PMCID: PMC5407188 DOI: 10.1016/j.mattod.2015.05.002] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The natural microenvironment of tumors is composed of extracellular matrix (ECM), blood vasculature, and supporting stromal cells. The physical characteristics of ECM as well as the cellular components play a vital role in controlling cancer cell proliferation, apoptosis, metabolism, and differentiation. To mimic the tumor microenvironment outside the human body for drug testing, two-dimensional (2-D) and murine tumor models are routinely used. Although these conventional approaches are employed in preclinical studies, they still present challenges. For example, murine tumor models are expensive and difficult to adopt for routine drug screening. On the other hand, 2-D in vitro models are simple to perform, but they do not recapitulate natural tumor microenvironment, because they do not capture important three-dimensional (3-D) cell-cell, cell-matrix signaling pathways, and multi-cellular heterogeneous components of the tumor microenvironment such as stromal and immune cells. The three-dimensional (3-D) in vitro tumor models aim to closely mimic cancer microenvironments and have emerged as an alternative to routinely used methods for drug screening. Herein, we review recent advances in 3-D tumor model generation and highlight directions for future applications in drug testing.
Collapse
Affiliation(s)
- Waseem Asghar
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
- Department of Computer Engineering & Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, FL 33431, USA
| | - Rami El Assal
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
| | - Hadi Shafiee
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Division of Biomedical Engineering, Division of Infectious Diseases, Renal Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Sharon Pitteri
- Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
| | - Ramasamy Paulmurugan
- Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
| | - Utkan Demirci
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Division of Biomedical Engineering, Division of Infectious Diseases, Renal Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA 94304, USA
| |
Collapse
|
13
|
Chronopoulou L, Margheritelli S, Toumia Y, Paradossi G, Bordi F, Sennato S, Palocci C. Biosynthesis and Characterization of Cross-Linked Fmoc Peptide-Based Hydrogels for Drug Delivery Applications. Gels 2015; 1:179-193. [PMID: 30674172 PMCID: PMC6318691 DOI: 10.3390/gels1020179] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 09/25/2015] [Accepted: 10/09/2015] [Indexed: 12/28/2022] Open
Abstract
Recently, scientific and technological interest in the synthesis of novel peptide-based hydrogel materials have grown dramatically. Applications of such materials mostly concern the biomedical field with examples covering sectors such as drug delivery, tissue engineering, and production of scaffolds for cell growth, thanks to their biocompatibility and biodegradability. In this work we synthesized Fmoc-Phe₃ based hydrogels of different chirality by using a biocatalytic approach. Moreover, we investigated the possibility of employing a crosslinker during the biosynthetic process and we studied and compared some chemico-physical features of both crosslinked and non-crosslinked hydrogels. In particular, we investigated the rheological properties of such materials, as well as their swelling ability, stability in aqueous medium, and their structure by SEM and AFM analysis. Crosslinked and non-crosslinked hydrogels could be formed by this procedure with comparable yields but distinct chemico-physical features. We entrapped dexamethasone within nanopolymeric particles based on PLGA coated or not with chitosan and we embedded these nanoparticles into the hydrogels. Dexamethasone release from such a nanopolymer/hydrogel system was controlled and sustained and dependent on genipin crosslinking degree. The possibility of efficiently coupling a drug delivery system to hydrogel materials seem particularly promising for tissue engineering applications, where the hydrogel could provide cells the necessary support for their growth, while nanoparticles could favor cell growth or differentiation by providing them the necessary bioactive molecules.
Collapse
Affiliation(s)
- Laura Chronopoulou
- Chemistry Department, University of Rome La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy.
| | - Silvia Margheritelli
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
| | - Yosra Toumia
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
| | - Gaio Paradossi
- Department of Chemical Science and Technology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
| | - Federico Bordi
- Department of Physics, University of Rome La Sapienza and Institute for Complex-System (ISC) CNR, UOS Sapienza, P.le Aldo Moro 2, I-00185 Roma, Italy.
| | - Simona Sennato
- Department of Physics, University of Rome La Sapienza and Institute for Complex-System (ISC) CNR, UOS Sapienza, P.le Aldo Moro 2, I-00185 Roma, Italy.
| | - Cleofe Palocci
- Chemistry Department, University of Rome La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy.
| |
Collapse
|
14
|
Islam M, Motasim Bellah M, Sajid A, Raziul Hasan M, Kim YT, Iqbal SM. Effects of Nanotexture on Electrical Profiling of Single Tumor Cell and Detection of Cancer from Blood in Microfluidic Channels. Sci Rep 2015; 5:13031. [PMID: 26373820 PMCID: PMC4570978 DOI: 10.1038/srep13031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 07/16/2015] [Indexed: 11/23/2022] Open
Abstract
Microfluidic channels have been implemented to detect cancer cells from blood using electrical measurement of each single cell from the sample. Every cell provided characteristic current profile based on its mechano-physical properties. Cancer cells not only showed higher translocation time and peak amplitude compared to blood cells, their pulse shape was also distinctively different. Prevalent microfluidic channels are plain but we created nanotexture on the channel walls using micro reactive ion etching (micro-RIE). The translocation behaviors of the metastatic renal cancer cells through plain and nanotextured PDMS microchannels showed clear differences. Nanotexture enhanced the cell-surface interactions and more than 50% tumor cells exhibited slower translocation through nanotextured channels compared to plain devices. On the other hand, most of the blood cells had very similar characteristics in both channels. Only 7.63% blood cells had slower translocation in nanotextured microchannels. The tumor cell detection efficiency from whole blood increased by 14% in nanotextured microchannels compared to plain channels. This interesting effect of nanotexture on translocation behavior of tumor cells is important for the early detection of cancer.
Collapse
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
| | - Mohammad Motasim Bellah
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA
- Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA
- Department of Interdisciplinary Studies and Department of Biology, University of Texas at Arlington, Arlington, TX 76011, USA
| | - Adeel Sajid
- Nano-Bio Lab, University of Texas at Arlington, Arlington, TX 76019, USA
- Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA
- Department of Interdisciplinary Studies and Department of Biology, University of Texas at Arlington, Arlington, TX 76011, USA
| | - Mohammad Raziul Hasan
- 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
| | - Young-tae Kim
- Nanotechnology Research Center, University of Texas at Arlington, Arlington, TX 76019, USA
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76010, USA
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, 75390, USA
| | - Samir M. Iqbal
- 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
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76010, USA
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, 75390, USA
| |
Collapse
|
15
|
Ilyas A, Lavrik NV, Kim HK, Aswath PB, Varanasi VG. Enhanced interfacial adhesion and osteogenesis for rapid "bone-like" biomineralization by PECVD-based silicon oxynitride overlays. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15368-15379. [PMID: 26095187 PMCID: PMC6508966 DOI: 10.1021/acsami.5b03319] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Structurally unstable fracture sites require metal fixative devices, which have long healing times due to their lack of osteoinductivity. Bioactive glass coatings lack in interfacial bonding, delaminate, and have reduced bioactivity due to the high temperatures used for their fabrication. Here, we test the hypothesis that low-temperature PECVD amorphous silica can enhance adhesion to the underlying metal surface and that N incorporation enhances osteogenesis and rapid biomineralization. A model Ti/TiO2-SiOx interface was formed by first depositing Ti onto Si wafers, followed by surface patterning, thermal annealing to form TiO2, and depositing SiOx/Si(ON)x overlays. TEM micrographs showed conformal SiOx layers on Ti/TiO2 overlays while XPS data revealed the formation of an elemental Ti-O-Si interface. Nanoscratch testing verified strong SiOx bonding with the underlying TiO2 layers. In vitro studies showed that the surface properties changed significantly to reveal the formation of hydroxycarbonate apatite within 6 h, and Si(ON)x surface chemistry induced osteogenic gene expression of human periosteal cells and led to a rapid "bone-like" biomineral formation within 4 weeks. XANES data revealed that the incorporation of N increased the surface HA bioactivity by increasing the carbonate to phosphate ratio. In conclusion, silicon oxynitride overlays on bone-implant systems enhance osteogenesis and biomineralization via surface nitrogen incorporation.
Collapse
Affiliation(s)
- Azhar Ilyas
- Department of Biomedical Sciences, Baylor College of Dentistry Texas A&M University, 3302 Gaston Avenue, Dallas, Texas 75246, United States
| | - Nickolay V. Lavrik
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Harry K.W. Kim
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, 2222 Welborn Street, Dallas, Texas 75219, United States
| | - Pranesh B. Aswath
- Department of Materials Science and Engineering, University of Texas at Arlington, 501 West First Street, Arlington, Texas 76019, United States
| | - Venu G. Varanasi
- Department of Biomedical Sciences, Baylor College of Dentistry Texas A&M University, 3302 Gaston Avenue, Dallas, Texas 75246, United States
| |
Collapse
|
16
|
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.
Collapse
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
| | | | | | | | | | | | | |
Collapse
|
17
|
Asghar W, El Assal R, Shafiee H, Anchan RM, Demirci U. Preserving human cells for regenerative, reproductive, and transfusion medicine. Biotechnol J 2015; 9:895-903. [PMID: 24995723 DOI: 10.1002/biot.201300074] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 05/21/2014] [Accepted: 05/30/2014] [Indexed: 12/15/2022]
Abstract
Cell cryopreservation maintains cellular life at sub-zero temperatures by slowing down biochemical processes. Various cell types are routinely cryopreserved in modern reproductive, regenerative, and transfusion medicine. Current cell cryopreservation methods involve freezing (slow/rapid) or vitrifying cells in the presence of a cryoprotective agent (CPA). Although these methods are clinically utilized, cryo-injury due to ice crystals, osmotic shock, and CPA toxicity cause loss of cell viability and function. Recent approaches using minimum volume vitrification provide alternatives to the conventional cryopreservation methods. Minimum volume vitrification provides ultra-high cooling and rewarming rates that enable preserving cells without ice crystal formation. Herein, we review recent advances in cell cryopreservation technology and provide examples of techniques that are utilized in oocyte, stem cell, and red blood cell cryopreservation.
Collapse
Affiliation(s)
- Waseem Asghar
- Bio-Acoustic-MEMS in Medicine (BAMM) Laboratories, Department of Radiology, Canary Center at Stanford for Cancer Early Detection, Stanford School of Medicine, Stanford University, Palo Alto, CA, USA
| | | | | | | | | |
Collapse
|
18
|
Biscaia SI, Viana TF, Almeida HA, Bártolo PJ. Production and Characterisation of PCL/ES Scaffolds for Bone Tissue Engineering. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.matpr.2015.04.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
19
|
Mosaddegh E, Hassankhani A. Preparation and characterization of nano-CaO based on eggshell waste: Novel and green catalytic approach to highly efficient synthesis of pyrano[4,3-b]pyrans. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(12)60755-4] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
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.
Collapse
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
| |
Collapse
|