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Characterization of surface changes on silicon and porous silicon after interaction with hydroxyl radicals. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Aljumaily MM, Alsaadi MA, Das R, Hamid SBA, Hashim NA, AlOmar MK, Alayan HM, Novikov M, Alsalhy QF, Hashim MA. Optimization of the Synthesis of Superhydrophobic Carbon Nanomaterials by Chemical Vapor Deposition. Sci Rep 2018; 8:2778. [PMID: 29426860 PMCID: PMC5807387 DOI: 10.1038/s41598-018-21051-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 01/29/2018] [Indexed: 11/09/2022] Open
Abstract
Demand is increasing for superhydrophobic materials in many applications, such as membrane distillation, separation and special coating technologies. In this study, we report a chemical vapor deposition (CVD) process to fabricate superhydrophobic carbon nanomaterials (CNM) on nickel (Ni)-doped powder activated carbon (PAC). The reaction temperature, reaction time and H2/C2H2 gas ratio were optimized to achieve the optimum contact angle (CA) and carbon yield (CY). For the highest CY (380%) and CA (177°), the optimal reaction temperatures were 702 °C and 687 °C, respectively. However, both the reaction time (40 min) and gas ratio (1.0) were found to have similar effects on CY and CA. Based on the Field emission scanning electron microscopy and transmission electron microscopy images, the CNM could be categorized into two main groups: a) carbon spheres (CS) free carbon nanofibers (CNFs) and b) CS mixed with CNFs, which were formed at 650 and 750 °C, respectively. Raman spectroscopy and thermogravimetric analysis also support this finding. The hydrophobicity of the CNM, expressed by the CA, follows the trend of CS-mixed CNFs (CA: 177°) > CS-free CNFs (CA: 167°) > PAC/Ni (CA: 65°). This paves the way for future applications of synthesized CNM to fabricate water-repellent industrial-grade technologies.
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Affiliation(s)
- Mustafa Mohammed Aljumaily
- Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603, Kuala Lumpur, Malaysia.,University of Malaya Centre for Ionic Liquids, University Malaya, Kuala Lumpur, 50603, Malaysia
| | - Mohammed Abdulhakim Alsaadi
- Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603, Kuala Lumpur, Malaysia. .,University of Malaya Centre for Ionic Liquids, University Malaya, Kuala Lumpur, 50603, Malaysia. .,National Chair of Materials Sciences and Metallurgy, University of Nizwa, Sultanate of Oman, Nizwa, Oman.
| | - Rasel Das
- Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Sharifah Bee Abd Hamid
- Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - N Awanis Hashim
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Mohamed Khalid AlOmar
- University of Malaya Centre for Ionic Liquids, University Malaya, Kuala Lumpur, 50603, Malaysia.,Department of Civil Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Haiyam Mohammed Alayan
- University of Malaya Centre for Ionic Liquids, University Malaya, Kuala Lumpur, 50603, Malaysia.,Department of Chemical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Mikhail Novikov
- Nanotechnology & Catalysis Research Centre (NANOCAT), IPS Building, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Qusay F Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street No. 52, B. O. 35010, Baghdad, Iraq
| | - Mohd Ali Hashim
- University of Malaya Centre for Ionic Liquids, University Malaya, Kuala Lumpur, 50603, Malaysia.,Department of Chemical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
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4
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Coombs SG, Khodjaniyazova S, Bright FV. Exploiting the 3-Aminopropyltriethoxysilane (APTES) autocatalytic nature to create bioconjugated microarrays on hydrogen-passivated porous silicon. Talanta 2018; 177:26-33. [DOI: 10.1016/j.talanta.2017.09.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
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5
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Han Y, He L, Luo X, Huang X, Shi K. Several surfaces with special wettability: Influence on spreading and motion of W/O emulsion droplets. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1310655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yunrui Han
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, China
| | - Limin He
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, China
- Qingdao Key Laboratory of Circle Sea Oil & Gas Storage and Transportation Technology, China University of Petroleum, Qingdao, China
| | - Xiaoming Luo
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, China
- Shandong Provincial Key Laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum, Qingdao, China
| | - Xin Huang
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, China
| | - Kaiyue Shi
- College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, China
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6
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Horner IJ, Kraut ND, Richardson CA, Jean B, Rook AM, Bright FV. Contact Pin-Printing onto Porous Silicon for Creating Microarrays with High Chemical Diversity. APPLIED SPECTROSCOPY 2016; 70:1662-1675. [PMID: 27329832 DOI: 10.1177/0003702816647963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 12/29/2015] [Indexed: 06/06/2023]
Abstract
We explore the size and spatial microheterogeneity of contact pin-printed spots formed on porous silicon (pSi). Glycerol was contact printed at room temperature onto as-prepared, hydrogen-passivated pSi (ap-pSi) using 50 or 200 µm diameter solid pins. The pSi was then subjected to a strong oxidizing environment (gaseous O3) and washed to remove the glycerol masks. The glycerol-free regions were converted to oxidized pSi (ox-pSi); the glycerol-coated regions were protected from O3, but not entirely. The final array is described as circularly shaped "ap-pSi" regions on a field of ox-pSi. When comparing the areas outside and inside the glycerol-masked pSi spots, one finds dramatic differences in the Si-O-Si, SiHx (x = 1-3) and OySiHx (y, x = 1-3) levels with a spatially dependent continuum of compositions across the spot diameter. Experimental conditions could be adjusted to tune the final ap-pSi spot diameter and edge widths from 90 µm to 520 µm and 20 µm to 130 µm, respectively. The resulting ap-pSi spot diameter is explained by using molecular kinetic theory and time-dependent glycerol imbibement into the pSi within a one-dimensional Darcy's law model.
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Affiliation(s)
- Ian J Horner
- Department of Chemistry, Natural Sciences Complex, SUNY-Buffalo, USA
| | | | | | - Bernandie Jean
- Department of Chemistry and Biochemistry, Mellon Hall of Sciences, Duquesne University, USA
| | - Alyssa M Rook
- Department of Chemistry, Natural Sciences Complex, SUNY-Buffalo, USA
| | - Frank V Bright
- Department of Chemistry, Natural Sciences Complex, SUNY-Buffalo, USA
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8
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Ciasca G, Papi M, Businaro L, Campi G, Ortolani M, Palmieri V, Cedola A, De Ninno A, Gerardino A, Maulucci G, De Spirito M. Recent advances in superhydrophobic surfaces and their relevance to biology and medicine. BIOINSPIRATION & BIOMIMETICS 2016; 11:011001. [PMID: 26844980 DOI: 10.1088/1748-3190/11/1/011001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
By mimicking naturally occurring superhydrophobic surfaces, scientists can now realize artificial surfaces on which droplets of a few microliters of water are forced to assume an almost spherical shape and an extremely high contact angle. In recent decades, these surfaces have attracted much attention due to their technological applications for anti-wetting and self-cleaning materials. Very recently, researchers have shifted their interest to investigate whether superhydrophobic surfaces can be exploited to study biological systems. This research effort has stimulated the design and realization of new devices that allow us to actively organize, visualize and manipulate matter at both the microscale and nanoscale levels. Such precise control opens up wide applications in biomedicine, as it allows us to directly manipulate objects at the typical length scale of cells and macromolecules. This progress report focuses on recent biological and medical applications of superhydrophobicity. Particular regard is paid to those applications that involve the detection, manipulation and study of extremely small quantities of molecules, and to those that allow high throughput cell and biomaterial screening.
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Affiliation(s)
- G Ciasca
- Istituto di Fisica, Università Cattolica del Sacro Cuore, Largo F Vito 1, 00168 Rome, Italy
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Bergeron S, Laforte V, Lo PS, Li H, Juncker D. Evaluating mixtures of 14 hygroscopic additives to improve antibody microarray performance. Anal Bioanal Chem 2015; 407:8451-62. [PMID: 26345442 DOI: 10.1007/s00216-015-8992-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 08/17/2015] [Accepted: 08/19/2015] [Indexed: 11/27/2022]
Abstract
Microarrays allow the miniaturization and multiplexing of biological assays while only requiring minute amounts of samples. As a consequence of the small volumes used for spotting and the assays, evaporation often deteriorates the quality, reproducibility of spots, and the overall assay performance. Glycerol is commonly added to antibody microarray printing buffers to decrease evaporation; however, it often decreases the binding of antibodies to the surface, thereby negatively affecting assay sensitivity. Here, combinations of 14 hygroscopic chemicals were used as additives to printing buffers for contact-printed antibody microarrays on four different surface chemistries. The ability of the additives to suppress evaporation was quantified by measuring the residual buffer volume in open quill pins over time. The seven best additives were then printed either individually or as a 1:1 mixture of two additives, and the homogeneity, intensity, and reproducibility of both the spotted protein and of a fluorescently labeled analyte in an assay were quantified. Among the 28 combinations on the four slides, many were found to outperform glycerol, and the best additive mixtures were further evaluated by changing the ratio of the two additives. We observed that the optimal additive mixture was dependent on the slide chemistry, and that it was possible to increase the binding of antibodies to the surface threefold compared to 50 % glycerol, while decreasing whole-slide coefficient of variation to 5.9 %. For the two best slides, improvements were made for both the limit of detection (1.6× and 5.9×, respectively) and the quantification range (1.2× and 2.1×, respectively). The additive mixtures identified here thus help improve assay reproducibility and performance, and might be beneficial to all types of microarrays that suffer from evaporation of the printing buffers.
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Affiliation(s)
- Sébastien Bergeron
- McGill University & Genome Quebec Innovation Centre, McGill University, 740 Dr. Penfield Avenue, Montreal, Quebec, Canada, H3A 0G1
- Biomedical Engineering Department, McGill University, 3775 University Street, Montreal, Quebec, Canada, H3A 2B4
| | - Veronique Laforte
- McGill University & Genome Quebec Innovation Centre, McGill University, 740 Dr. Penfield Avenue, Montreal, Quebec, Canada, H3A 0G1
- Biomedical Engineering Department, McGill University, 3775 University Street, Montreal, Quebec, Canada, H3A 2B4
- Neurology and Neurosurgery Department, McGill University, 3801 University Street, Montreal, Quebec, Canada, H3A 2B4
| | - Pik-Shan Lo
- McGill University & Genome Quebec Innovation Centre, McGill University, 740 Dr. Penfield Avenue, Montreal, Quebec, Canada, H3A 0G1
- Biomedical Engineering Department, McGill University, 3775 University Street, Montreal, Quebec, Canada, H3A 2B4
| | - Huiyan Li
- McGill University & Genome Quebec Innovation Centre, McGill University, 740 Dr. Penfield Avenue, Montreal, Quebec, Canada, H3A 0G1
- Biomedical Engineering Department, McGill University, 3775 University Street, Montreal, Quebec, Canada, H3A 2B4
| | - David Juncker
- McGill University & Genome Quebec Innovation Centre, McGill University, 740 Dr. Penfield Avenue, Montreal, Quebec, Canada, H3A 0G1.
- Biomedical Engineering Department, McGill University, 3775 University Street, Montreal, Quebec, Canada, H3A 2B4.
- Neurology and Neurosurgery Department, McGill University, 3801 University Street, Montreal, Quebec, Canada, H3A 2B4.
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Wiktor P, Brunner A, Kahn P, Qiu J, Magee M, Bian X, Karthikeyan K, LaBaer J. Microreactor array device. Sci Rep 2015; 5:8736. [PMID: 25736721 PMCID: PMC4348619 DOI: 10.1038/srep08736] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 01/28/2015] [Indexed: 11/22/2022] Open
Abstract
We report a device to fill an array of small chemical reaction chambers (microreactors) with reagent and then seal them using pressurized viscous liquid acting through a flexible membrane. The device enables multiple, independent chemical reactions involving free floating intermediate molecules without interference from neighboring reactions or external environments. The device is validated by protein expressed in situ directly from DNA in a microarray of ~10,000 spots with no diffusion during three hours incubation. Using the device to probe for an autoantibody cancer biomarker in blood serum sample gave five times higher signal to background ratio compared to standard protein microarray expressed on a flat microscope slide. Physical design principles to effectively fill the array of microreactors with reagent and experimental results of alternate methods for sealing the microreactors are presented.
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Affiliation(s)
- Peter Wiktor
- 1] Engineering Arts LLC, Tempe, Arizona, U.S.A [2] The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
| | - Al Brunner
- Engineering Arts LLC, Tempe, Arizona, U.S.A
| | - Peter Kahn
- Engineering Arts LLC, Tempe, Arizona, U.S.A
| | - Ji Qiu
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
| | - Mitch Magee
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
| | - Xiaofang Bian
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
| | - Kailash Karthikeyan
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
| | - Joshua LaBaer
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, U.S.A
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De Ninno A, Ciasca G, Gerardino A, Calandrini E, Papi M, De Spirito M, Nucara A, Ortolani M, Businaro L, Baldassarre L. An integrated superhydrophobic-plasmonic biosensor for mid-infrared protein detection at the femtomole level. Phys Chem Chem Phys 2015; 17:21337-42. [PMID: 25712032 DOI: 10.1039/c4cp05023a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In this work we present an integrated biosensor that enables FTIR (Fourier Transform-Infrared) detection of analytes contained in diluted solutions. The fabricated nanosensor allows for the detection of proteins through the identification of the fine structure of their amide I and II bands, up to the nanomolar concentration range. We exploited two distinct effects to enhance the sensitivity: (i) the concentration effect due to the presence of the superhydrophobic surface that conveys molecules dispersed in solution directly inside the focus of a FTIR spectromicroscope; (ii) the plasmonic resonance of the nanoantenna array that provides electromagnetic field enhancement in the amide I and II spectral region (1500-1700 cm(-1)). We demonstrate the detection of ferritin in the nanomolar concentration range, a blood protein that is usually available in small amounts in typical blood samples.
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Affiliation(s)
- Adele De Ninno
- CNR-Istituto di Fotonica e Nanotecnologie, Via Cineto Romano 42, 00146 Rome, Italy
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Cheng H, Zheng H, Wu JX, Xu W, Zhou L, Leong KC, Fitzgerald E, Rajagopalan R, Too HP, Choi WK. Photo-attachment of biomolecules for miniaturization on wicking Si-nanowire platform. PLoS One 2015; 10:e0116539. [PMID: 25689680 PMCID: PMC4331555 DOI: 10.1371/journal.pone.0116539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 12/10/2014] [Indexed: 12/03/2022] Open
Abstract
We demonstrated the surface functionalization of a highly three-dimensional, superhydrophilic wicking substrate using light to immobilize functional biomolecules for sensor or microarray applications. We showed here that the three-dimensional substrate was compatible with photo-attachment and the performance of functionalization was greatly improved due to both increased surface capacity and reduced substrate reflectivity. In addition, photo-attachment circumvents the problems induced by wicking effect that was typically encountered on superhydrophilic three-dimensional substrates, thus reducing the difficulty of producing miniaturized sites on such substrate. We have investigated various aspects of photo-attachment process on the nanowire substrate, including the role of different buffers, the effect of wavelength as well as how changing probe structure may affect the functionalization process. We demonstrated that substrate fabrication and functionalization can be achieved with processes compatible with microelectronics processes, hence reducing the cost of array fabrication. Such functionalization method coupled with the high capacity surface makes the substrate an ideal candidate for sensor or microarray for sensitive detection of target analytes.
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Affiliation(s)
- He Cheng
- Advanced Materials for Micro- and Nano- Systems, Singapore-MIT Alliance, Singapore, Singapore
| | - Han Zheng
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
| | - Jia Xin Wu
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore
| | - Wei Xu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
| | - Lihan Zhou
- Bioprocessing Technology Institute, 20 Biopolis Way, #06-01 Centros, Singapore, Singapore
| | - Kam Chew Leong
- GLOBALFOUNDRIES Singapore Private Limited, Singapore, Singapore
| | - Eugene Fitzgerald
- Advanced Materials for Micro- and Nano- Systems, Singapore-MIT Alliance, Singapore, Singapore
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Raj Rajagopalan
- Skolkovo Institute of Science and Technology, Moscow, The Russian Federation
| | - Heng Phon Too
- Bioprocessing Technology Institute, 20 Biopolis Way, #06-01 Centros, Singapore, Singapore
- Department of Biochemistry, National University of Singapore, Singapore, Singapore
| | - Wee Kiong Choi
- Advanced Materials for Micro- and Nano- Systems, Singapore-MIT Alliance, Singapore, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore
- * E-mail:
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Zavalin A, Yang J, Hayden K, Vestal M, Caprioli RM. Tissue protein imaging at 1 μm laser spot diameter for high spatial resolution and high imaging speed using transmission geometry MALDI TOF MS. Anal Bioanal Chem 2015; 407:2337-42. [PMID: 25673247 DOI: 10.1007/s00216-015-8532-6] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 12/29/2014] [Accepted: 01/04/2015] [Indexed: 11/27/2022]
Abstract
We have achieved protein imaging mass spectrometry capabilities at sub-cellular spatial resolution and at high acquisition speed by integrating a transmission geometry ion source with time of flight mass spectrometry. The transmission geometry principle allowed us to achieve a 1-μm laser spot diameter on target. A minimal raster step size of the instrument was 2.5 μm. Use of 2,5-dihydroxyacetophenone robotically sprayed on top of a tissue sample as a matrix together with additional sample preparation steps resulted in single pixel mass spectra from mouse cerebellum tissue sections having more than 20 peaks in a range 3-22 kDa. Mass spectrometry images were acquired in a standard step raster microprobe mode at 5 pixels/s and in a continuous raster mode at 40 pixels/s.
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Affiliation(s)
- Andre Zavalin
- The Mass Spectrometry Research Center and Department of Biochemistry, Vanderbilt University, Nashville, TN, 37235, USA
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14
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Single-cell imaging for the study of oncometabolism. Methods Enzymol 2015. [PMID: 24924134 DOI: 10.1016/b978-0-12-801329-8.00010-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Metabolic profiling is commonly employed to investigate the global metabolic alterations of malignant cells or tissues. In the latter setting, neoplastic lesions are separated from adjacent, healthy tissues and their metabolites are quantified upon a chromatographic run coupled to mass spectrometry. Changes in the abundance of specific metabolites are then mapped on metabolic networks and the underlying metabolic circuitries are investigated as potential targets for the development of novel anticancer drugs. This approach, however, does not take into account the intrinsic heterogeneity of neoplastic lesions, which contain a large amount of non-transformed cells. To circumvent this issue, techniques have been developed that allow for the imaging of metabolites at the single-cell level. Here, we summarize established protocols that are suitable for imaging metabolites in animal cells (be them malignant or not) as well as in plant and prokaryotic cells. These methods are relevant for the study of the metabolic alterations that accompany oncogenesis and tumor progression.
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El-Maiss J, Darmanin T, Guittard F. Controlling electrodeposited conducting polymer nanostructures with the number and the length of fluorinated chains for adjusting superhydrophobic properties and adhesion. RSC Adv 2015. [DOI: 10.1039/c5ra04945h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Controlling the formation of surface nanostructures is highly important for various applications, and in particular for superhydrophobic properties.
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16
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A porous silicon immunoassay platform for fluorometric determination of α-synuclein in human cerebrospinal fluid. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1180-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Irimia-Vladu M. “Green” electronics: biodegradable and biocompatible materials and devices for sustainable future. Chem Soc Rev 2014; 43:588-610. [PMID: 24121237 DOI: 10.1039/c3cs60235d] [Citation(s) in RCA: 370] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mihai Irimia-Vladu
- Joanneum Research Forschungsgesellschaft mbH, Franz-Pichler Straße Nr. 30, 8160 Weiz, Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Department of Soft Matter Physics, Johannes Kepler University, Linz; Austria.
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Mujawar LH, Moers A, Norde W, van Amerongen A. Rapid mastitis detection assay on porous nitrocellulose membrane slides. Anal Bioanal Chem 2013; 405:7469-76. [PMID: 23912825 DOI: 10.1007/s00216-013-7192-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/11/2013] [Accepted: 06/28/2013] [Indexed: 11/28/2022]
Abstract
We have developed a rapid mastitis detection test based on the immobilization of tag-specific antibody molecules, the binding of double-tagged amplicons, and as a secondary signal a conjugate of black carbon nanoparticles having molecules of a fusion protein of neutrAvidin and alkaline phosphatase at their surface. The antibodies were inkjet printed onto three different nitrocellulose membrane slides, Unisart (Sartorius), FAST (GE Whatman), and Oncyte-Avid (Grace-Biolabs), and the final assay signals on these slides were compared. The blackness of the spots was determined by flatbed scanning and assessment of the pixel gray volume using TotalLab image analysis software. The black spots could be easily read by the naked eye. We successfully demonstrated the detection of specific amplicons from mastitis-causing pathogens in less than 3 h. Using a similar protocol, we also showed that it was possible to detect specific amplicons from four different mastitis-causing pathogens (six strains) on the same pad. The influence of two different printing buffers, phosphate-buffered saline (pH 7.4) and carbonate buffer (pH 9.6), on the functionality of the primary antibodies was also compared.
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Affiliation(s)
- Liyakat Hamid Mujawar
- Biomolecular Sensing and Diagnostics, Food and Biobased Research, Wageningen University and Research Centre, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands.
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Bae SJ, Song H, Jung GY, Cho SW, Bae JW, Um SH. A superhydrophobic layer formed by fluoro-derivative-treated gold sheets on grown-up zinc oxide nanoparticles for a spherical DNA hydrogel. Colloids Surf B Biointerfaces 2013; 111:342-5. [PMID: 23838202 DOI: 10.1016/j.colsurfb.2013.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 05/27/2013] [Accepted: 06/04/2013] [Indexed: 10/26/2022]
Abstract
A facile deposition process was developed for the fabrication of a new superhydrophobic layer composed of an underlying zinc oxide nanoparticle support and a gold top layer doped with the hydrophobic chemical, heptadecafluoro-1-decanethiol (HDFT). The resulting microscaled and spherical DNA-based hydrogels could serve as a platform for pseudo-nucleus mimics.
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Affiliation(s)
- Sun Ju Bae
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Hui Song
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea; Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea
| | - Gun Young Jung
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea; Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jong Wook Bae
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea; SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea.
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Draper MC, Crick CR, Orlickaite V, Turek VA, Parkin IP, Edel JB. Superhydrophobic Surfaces as an On-Chip Microfluidic Toolkit for Total Droplet Control. Anal Chem 2013; 85:5405-10. [DOI: 10.1021/ac303786s] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark C. Draper
- Department
of Chemistry, Imperial College London,
South Kensington Campus, London,
SW7 2AZ, United Kingdom
| | - Colin R. Crick
- Department of Chemistry, University College London, 20 Gordon Street, London,
WC1H 0AJ, United Kingdom
| | - Viktorija Orlickaite
- Department of Chemistry, University College London, 20 Gordon Street, London,
WC1H 0AJ, United Kingdom
| | - Vladimir A. Turek
- Department
of Chemistry, Imperial College London,
South Kensington Campus, London,
SW7 2AZ, United Kingdom
| | - Ivan P. Parkin
- Department of Chemistry, University College London, 20 Gordon Street, London,
WC1H 0AJ, United Kingdom
| | - Joshua B. Edel
- Department
of Chemistry, Imperial College London,
South Kensington Campus, London,
SW7 2AZ, United Kingdom
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21
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Brun EM, Puchades R, Maquieira Á. Gold, Carbon, and Aluminum Low-Reflectivity Compact Discs as Microassaying Platforms. Anal Chem 2013; 85:4178-86. [DOI: 10.1021/ac4004985] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Eva M. Brun
- Centro de
Reconocimiento Molecular y Desarrollo Tecnológico,
Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia,
Spain
| | - Rosa Puchades
- Centro de
Reconocimiento Molecular y Desarrollo Tecnológico,
Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia,
Spain
| | - Ángel Maquieira
- Centro de
Reconocimiento Molecular y Desarrollo Tecnológico,
Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia,
Spain
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22
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Tzur-Balter A, Gilert A, Massad-Ivanir N, Segal E. Engineering porous silicon nanostructures as tunable carriers for mitoxantrone dihydrochloride. Acta Biomater 2013; 9:6208-17. [PMID: 23274152 DOI: 10.1016/j.actbio.2012.12.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 11/14/2012] [Accepted: 12/07/2012] [Indexed: 10/27/2022]
Abstract
Nanostructured porous silicon (PSi) thin films, fabricated by the electrochemical anodization of single crystalline Si wafers, are studied as delivery systems for the anticancer drug mitoxantrone dihydrochloride (MTX). The surface chemistry of the PSi carriers was tailored by surface alkylation using thermal hydrosilylation of 1-dodecene and undecylenic acid, followed by physical adsorption or covalent attachment of MTX to the Si scaffold. The nanostructure and the physiochemical properties of the different carriers were characterized by attenuated total reflectance Fourier transform infrared spectroscopy, nitrogen adsorption-desorption and contact angle measurements, demonstrating that surface alkylation results in a pronounced effect on the hydrophobicity/hydrophilicity of the scaffolds and a volumetric gain in pore wall, which in turn results in a decrease in pore diameter (>23%) and available porous volume (>40%). The effect of these key parameters on MTX loading efficacy, release profile, Si scaffold erosion kinetics and in vitro cytotoxicity on human breast carcinoma (MDA-MB-231) cells was studied and compared to the behavior of neat PSi carriers. We show that the chemically modified PSi carriers exhibit sustained release for several days to weeks with minimal to no burst effect, while for the native PSi MTX release was completed within 5h with a substantial burst release of ~40%. Moreover, our in vitro cytotoxicity experiments have clearly demonstrated that the MTX released from all PSi carriers maintained its cytotoxic effect towards MDA-MB-231 cells, in comparison to the low toxicity of the PSi carriers.
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23
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Mujawar LH, Maan AA, Khan MKI, Norde W, van Amerongen A. Distribution of Biomolecules in Porous Nitrocellulose Membrane Pads Using Confocal Laser Scanning Microscopy and High-Speed Cameras. Anal Chem 2013; 85:3723-9. [DOI: 10.1021/ac400076p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liyakat Hamid Mujawar
- Food and Biobased Research,
Biomolecular Sensing and Diagnostics, Wageningen University and Research Centre, Bornse Weilanden 9, 6708 WG Wageningen,
The Netherlands
- Laboratory
of Physical Chemistry
and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Abid Aslam Maan
- Food and Bioprocess Engineering
Group, Wageningen University, Bomenweg
2, 6703 HD Wageningen, Netherlands
| | - Muhammad Kashif Iqbal Khan
- Food and Bioprocess Engineering
Group, Wageningen University, Bomenweg
2, 6703 HD Wageningen, Netherlands
| | - Willem Norde
- University Medical Center Groningen, University of Groningen, A. Deusinglaan 1, 9713 AV
Groningen, The Netherlands
| | - Aart van Amerongen
- Food and Biobased Research,
Biomolecular Sensing and Diagnostics, Wageningen University and Research Centre, Bornse Weilanden 9, 6708 WG Wageningen,
The Netherlands
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24
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Yoo L, Ahn KY, Ahn JY, Laurell T, Lee YM, Yoo PJ, Lee J. A simple one-step assay platform based on fluorescence quenching of macroporous silicon. Biosens Bioelectron 2012; 41:477-83. [PMID: 23083907 DOI: 10.1016/j.bios.2012.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/27/2012] [Accepted: 09/09/2012] [Indexed: 01/24/2023]
Abstract
We synthesized 3D macroporous silicon through a simple electrochemical dissolution process and systematically estimated its protein adsorption and effect on fluorescence emission. Compared with conventional 2D polystyrene plate, the macroporous silicon showed a superior protein adsorption capacity and significant fluorescence quenching effect. We developed a 3D macroporous silicon-based adenosine assay system through the following fabrication process: streptavidin molecules that have been immobilized on the surface of macroporous silicon are attached with biotin-linked and adenosine-specific DNA aptamer, followed by hybridization between the attached aptamer and fluorescent chemical (carboxytetramethylrhodamine/CTMR) that is conjugated with a short complementary DNA sequence. In the absence of adenosine, the aptamer-CTMR complexes remain closely attached to the surface of porous silicon, hence fluorescence being significantly quenched. Upon binding to adenosine, the DNA aptamer is subject to structure switching that leads to dissociation of CTMR from DNA aptamer, and consequently the CTMR fluorescence is restored, indicating a simple one-step assay of adenosine. Compared to the conventional 2D PS and ZnO nanorods-based assays, adenosine at much lower (sub-micromolar) concentration was successfully detected through the 3D macroporous silicon-based assay. The three-dimensionally and densely immobilized aptamer probes and effective fluorescence quenching on the surface of macroporous silicon enables adenosine to be detected at lower levels. Although the adenosine detection is reported here as a proof-of-concept, the developed macroporous silicon-based simple one-step assay platform can be applied in general to fluorescence quenching -based detection of many other biomolecules.
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Affiliation(s)
- Lina Yoo
- Department of Chemical and Biological Engineering, College of Engineering Korea University, Anam-Dong 5-1, Seoul 136-713, Republic of Korea
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25
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Influence of buffer composition on the distribution of inkjet printed protein molecules and the resulting spot morphology. Talanta 2012; 98:1-6. [DOI: 10.1016/j.talanta.2012.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 06/01/2012] [Accepted: 06/04/2012] [Indexed: 11/20/2022]
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26
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Xia D, Johnson LM, López GP. Anisotropic wetting surfaces with one-dimensional and directional structures: fabrication approaches, wetting properties and potential applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:1287-302. [PMID: 22318857 DOI: 10.1002/adma.201104618] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 12/29/2011] [Indexed: 05/15/2023]
Abstract
This review article provides a brief summary of recent research progress on anisotropic wetting on one-dimensional (1D) and directionally patterned surfaces, as well as the technical importance in various applications. Inspiration from natural structures exhibiting anisotropic wetting behavior is first discussed. Development of fabrication techniques for topographically and chemically 1D patterned surfaces and directional nanomaterials are then reviewed, with emphasis on anisotropic behavior with topographically (structurally) patterned surfaces. The basic investigation of anisotropic wetting behavior and theoretical simulations for anisotropic wetting are also further reviewed. Perspectives concerning future direction of anisotropic wetting research and its potential applications in microfluidic devices, lab-on-a-chip, sensor, microreactor and self-cleaning are presented.
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Affiliation(s)
- Deying Xia
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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27
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Ahn JY, Lee S, Jo M, Kang J, Kim E, Jeong OC, Laurell T, Kim S. Sol-gel derived nanoporous compositions for entrapping small molecules and their outlook toward aptamer screening. Anal Chem 2012; 84:2647-53. [PMID: 22283623 DOI: 10.1021/ac202559w] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This paper reports for the first time the application of sol-gel microarrays for immobilizing nonsoluble small chemicals (Bisphenol-A; BPA). Also, known problems of sol-gel adhesion to conventional microtiter well plate substrates are circumvented by anchoring the sol-gel microspots to a porous silion surface so-called, PS-SG chips. We confirmed low molecular weight chemical immobilization inside a sol-gel network using fluorescein. BPA and the BPA specific aptamer were utilized as a model pair to verify the affinity specific interaction in the PS-SG selection system. The aptamer interacted specifically with BPA in the sol-gel spots, as shown in microarrays forming the letters "L", "U", "N", and "D". Moreover, the bound aptamer was released by heat, recovered, and verified by gel electrophoresis. The developed PS-SG chip platform will be used for screening aptamers against numerous small molecules such as toxins, metabolites, or pesticide residues.
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Affiliation(s)
- Ji-Young Ahn
- Department of Biomedical Engineering, Dongguk University, Seoul, Korea
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28
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Pastor E, Matveeva E, Valle-Gallego A, Goycoolea FM, Garcia-Fuentes M. Protein delivery based on uncoated and chitosan-coated mesoporous silicon microparticles. Colloids Surf B Biointerfaces 2011; 88:601-9. [DOI: 10.1016/j.colsurfb.2011.07.049] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 07/18/2011] [Accepted: 07/22/2011] [Indexed: 10/17/2022]
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29
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Goswami D, Medda SK, De G. Superhydrophobic films on glass surface derived from trimethylsilanized silica gel nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2011; 3:3440-7. [PMID: 21823656 DOI: 10.1021/am200666m] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The paper deals with the fabrication of sol-gel-derived superhydrophobic films on glass based on the macroscopic silica network with surface modification. The fabricated transparent films were composed of a hybrid -Si(CH(3))(3)-functionalized SiO(2) nanospheres exhibiting the desired micro/nanostructure, water repellency, and antireflection (AR) property. The wavelength selective AR property can be tuned by controlling the physical thickness of the films. Small-angle X-ray scattering (SAXS) studies revealed the existence of SiO(2) nanoparticles of average size ∼9.4 nm in the sols. TEM studies showed presence of interconnected SiO(2) NPs of ∼10 nm in size. The films were formed with uniformly packed SiO(2) aggregates as observed by FESEM of film surface. FTIR of the films confirmed presence of glasslike Si-O-Si bonding and methyl functionalization. The hydrophobicity of the surface was depended on the thickness of the deposited films. A critical film thickness (>115 nm) was necessary to obtain the air push effect for superhydrophobicity. Trimethylsilyl functionalization of SiO(2) and the surface roughness (rms ≈30 nm as observed by AFM) of the films were also contributed toward the high water contact angle (WCA). The coated glass surface showed WCA value of the droplet as high as 168 ± 3° with 6 μL of water. These superhydrophobic films were found to be stable up to about 230-240 °C as confirmed by TG/DTA studies, and WCA measurements of the films with respect to the heat-treatment temperatures. These high water repellant films can be deposited on relatively large glass surfaces to remove water droplets immediately without any mechanical assistance.
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Affiliation(s)
- Debmita Goswami
- Nano-Structured Materials Division, Central Glass and Ceramic Research Institute, Council of Scientific and Industrial Research, 196 Raja S. C. Mullick Road, Kolkata 700032, India
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30
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Pei J, Tang Y, Xu N, Lu W, Xiao S, Liu J. Covalently derivatized NTA microarrays on porous silicon for multi-mode detection of His-tagged proteins. Sci China Chem 2010. [DOI: 10.1007/s11426-010-4128-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Choi CH, Kim CJCJ. Droplet evaporation of pure water and protein solution on nanostructured superhydrophobic surfaces of varying heights. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:7561-7567. [PMID: 19518098 DOI: 10.1021/la803614h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Evaporation of liquids on substrates is important for many applications including lab-on-a-chip, especially when they are in droplets. Unlike on planar substrates, droplet evaporation on micropatterned substrates has been studied only recently and none so far on nanopatterns. Driven by the applicability of nanostructured surfaces to biomaterials and tissue engineering, we report on the evaporative process of sessile droplets of pure water and a protein solution on superhydrophobic surfaces of sharp-tip post structures in a submicrometer pitch (230 nm) and varying heights (100-500 nm). We find that the nanotopographical three-dimensionalities such as structural height and sidewall profile affect the surface superhydrophobicity in such a way that only tall and slender nanostructures provide the surface with great superhydrophobicity (a contact angle more than 170 degrees). The evaporation process was different between the pure water and the protein solution; unlike pure water, a significant contact-line spreading and pinning effect was observed in a droplet of a protein solution with an intermediate transition from a dewetting (Cassie) to a wetting (Wenzel) state. Enabled by well-defined nanostructures, our results highlight that the surface superhydrophobicity and the droplet evaporation are significantly affected by the three-dimensional nanometric topography and the surface fouling such as protein adsorption.
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Affiliation(s)
- Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA.
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32
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Bayiati P, Malainou A, Matrozos E, Tserepi A, Petrou PS, Kakabakos SE, Gogolides E. High-density protein patterning through selective plasma-induced fluorocarbon deposition on Si substrates. Biosens Bioelectron 2009; 24:2979-84. [DOI: 10.1016/j.bios.2009.03.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Accepted: 03/04/2009] [Indexed: 10/21/2022]
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33
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Chen L, Chen ZT, Wang J, Xiao SJ, Lu ZH, Gu ZZ, Kang L, Chen J, Wu PH, Tang YC, Liu JN. Gel-pad microarrays templated by patterned porous silicon for dual-mode detection of proteins. LAB ON A CHIP 2009; 9:756-760. [PMID: 19255656 DOI: 10.1039/b821265a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A proof-of-concept study demonstrated the feasibility of a novel gel-pad microarray on porous silicon chips, by initiation of an atom transfer radical propagation (ATRP) polymerisation of (polyethylene glycol) methacrylate (PEGMA) with surface Si-H species, stepwise chemical conversions of the gel membrane to an NTA-Ni2+/histidine-tagged protein system, and matrix-assisted laser desorption/ionisation mass spectroscopy (MALDI MS) and fluorescence detections.
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Affiliation(s)
- Ling Chen
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China
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34
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Wang F, Song S, Zhang J. Surface texturing of porous silicon with capillary stress and its superhydrophobicity. Chem Commun (Camb) 2009:4239-41. [DOI: 10.1039/b905769b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Ressine A, Corin I, Järås K, Guanti G, Simone C, Marko-Varga G, Laurell T. Porous silicon surfaces: a candidate substrate for reverse protein arrays in cancer biomarker detection. Electrophoresis 2008; 28:4407-15. [PMID: 18041036 DOI: 10.1002/elps.200700379] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This paper introduces a new substrate for reverse-phase protein microarray applications based on macroporous silicon. A key feature of the microarray substrate is the vastly surface enlarging properties of the porous silicon, which simultaneously offers highly confined microarray spots. The proof of principle of the reverse array concept was demonstrated in the detection of different levels of cyclin E, a possible cancer biomarker candidate which regulates G1-S transition and correlates with poor prognosis in different types of human cancers. The substrate properties were studied performing analysis of total cyclin E expression in human colon cancer cell lines Hct116 and SW480. The absence of unspecific binding and good microarray quality was demonstrated. In order to verify the performance of the 3-D textured macroporous surface for complex biological samples, lysates of the human tissue spiked to different levels with cell extract overproducing cyclin E (Hct116) were arrayed on the chip surface. The samples were spotted in a noncontact mode in 100 pL droplets with spots sizes ranged between 50 and 70 mum and spot-to-spot center distances 100 mum, allowing microarray spot densities up to 14 000 spots per cm(2). The different sample types of increasing complexities did not have any impact on the spot intensities recorded and the protein spots showed good homogeneity and reproducibility over the recorded microarrays. The data demonstrate the potential use of macroporous silicon as a substrate for quantitative determination of a cancer biomarker cyclin E in tissue lysates.
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Affiliation(s)
- Anton Ressine
- Department of Electrical Measurement, Lund University, Lund, Sweden
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36
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Järås K, Tajudin AA, Ressine A, Soukka T, Marko-Varga G, Bjartell A, Malm J, Laurell T, Lilja H. ENSAM: Europium Nanoparticles for Signal Enhancement of Antibody Microarrays on Nanoporous Silicon. J Proteome Res 2008; 7:1308-14. [DOI: 10.1021/pr700591j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kerstin Järås
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Asilah Ahmad Tajudin
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Anton Ressine
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Tero Soukka
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - György Marko-Varga
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Anders Bjartell
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Johan Malm
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Thomas Laurell
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
| | - Hans Lilja
- Department of Laboratory Medicine, Division of Clinical Chemistry, Lund University, Malmö University Hospital, Malmö, Sweden, Department of Electrical Measurement, Lund University, Lund, Sweden, Department of Biotechnology, University of Turku, Turku, Finland, Department of Analytical Chemistry, Lund University and AstraZeneca R&D Lund, Lund, Sweden, Department of Clinical Sciences, Division of Urological Cancers, Lund University, Malmö University Hospital, Malmö, Sweden, Departments of Clinical
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