1
|
Poursharifi N, Hassanpouramiri M, Zink A, Ucuncu M, Parlak O. Transdermal Sensing of Enzyme Biomarker Enabled by Chemo-Responsive Probe-Modified Epidermal Microneedle Patch in Human Skin Tissue. Adv Mater 2024:e2403758. [PMID: 38733567 DOI: 10.1002/adma.202403758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/07/2024] [Indexed: 05/13/2024]
Abstract
Wearable bioelectronics represents a significant breakthrough in healthcare settings, particularly in (bio)sensing which offers an alternative way to track individual health for diagnostics and therapy. However, there has been no notable improvement in the field of cancer, particularly for skin cancer. Here, a wearable bioelectronic patch is established for transdermal sensing of the melanoma biomarker, tyrosinase (Tyr), using a microneedle array integrated with a surface-bound chemo-responsive smart probe to enable target-specific electrochemical detection of Tyr directly from human skin tissue. The results presented herein demonstrate the feasibility of a transdermal microneedle sensor for direct quantification of enzyme biomarkers in an ex vivo skin model. Initial performance analysis of the transdermal microneedle sensor proves that the designed methodology can be an alternative for fast and reliable diagnosis of melanoma and the evaluation of skin moles. The innovative approach presented here may revolutionize the landscape of skin monitoring by offering a nondisruptive means for continuous surveillance and timely intervention of skin anomalies, such as inflammatory skin diseases or allergies and can be extended to the screening of multiple responses of complementary biomarkers with simple modification in device design.
Collapse
Affiliation(s)
- Nazanin Poursharifi
- Department of Medicine, Solna, Division of Dermatology and Venereology, Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Morteza Hassanpouramiri
- Department of Medicine, Solna, Division of Dermatology and Venereology, Karolinska Institutet, Stockholm, 171 77, Sweden
- Department of Dermatology and Allergy, TUM School of Medicine and Health, Technical University of Munich, 80802, Munich, Germany
| | - Alexander Zink
- Department of Medicine, Solna, Division of Dermatology and Venereology, Karolinska Institutet, Stockholm, 171 77, Sweden
- Department of Dermatology and Allergy, TUM School of Medicine and Health, Technical University of Munich, 80802, Munich, Germany
| | - Muhammed Ucuncu
- Department of Analytical Chemistry, Faculty of Pharmacy, İzmir Katip Çelebi University, İzmir, 35620, Türkiye
| | - Onur Parlak
- Department of Medicine, Solna, Division of Dermatology and Venereology, Karolinska Institutet, Stockholm, 171 77, Sweden
- Department of Dermatology and Allergy, TUM School of Medicine and Health, Technical University of Munich, 80802, Munich, Germany
- Center for the Advancement of Integrated Medical and Engineering Sciences, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, 171 77, Sweden
- Centre for Molecular Medicine, Karolinska University Hospital, Stockholm, 171 64, Sweden
| |
Collapse
|
2
|
Ganguli S, Zhao Z, Parlak O, Hattori Y, Sa J, Sekretareva A. Nano-Impact Single-Entity Electrochemistry Enables Plasmon-Enhanced Electrocatalysis. Angew Chem Int Ed Engl 2023:e202302394. [PMID: 37078401 DOI: 10.1002/anie.202302394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/19/2023] [Accepted: 04/19/2023] [Indexed: 04/21/2023]
Abstract
Plasmon-enhanced electrocatalysis (PEEC), based on a combination of localized surface plasmon resonance excitation and electrochemical bias applied to a plasmonic material, can result in improved electrical-to-chemical energy conversion compared to conventional electrocatalysis. Here, we demonstrate the advantages of nano-impact single-entity electrochemistry (SEE) for investigating the intrinsic activity of plasmonic catalysts at the single-particle level using glucose electrooxidation and oxygen reduction on gold nanoparticles as model reactions. We show that in conventional ensemble measurements, plasmonic effects have minimal impact on photocurrents. We suggest that this is due to the continuous equilibration of the Fermi level (EF) of the deposited gold nanoparticles with the EF of the working electrode, leading to fast neutralization of hot carriers by the measuring circuit. The photocurrents detected in the ensemble measurements are caused by photo-induced heating of the supporting electrode material. In SEE, the EF of suspended gold nanoparticles is unaffected by the working electrode potential. As a result, plasmonic effects are the dominant source of photocurrents under SEE experimental conditions.
Collapse
Affiliation(s)
- Sagar Ganguli
- Uppsala University: Uppsala Universitet, Chemistry-Ångström, SWEDEN
| | - Ziwen Zhao
- Uppsala University: Uppsala Universitet, Chemistry-Ångström, SWEDEN
| | - Onur Parlak
- Karolinska Institute: Karolinska Institutet, Department of Medicine, SWEDEN
| | - Yocefu Hattori
- Uppsala University: Uppsala Universitet, Chemistry-Ångström, SWEDEN
| | - Jacinto Sa
- Uppsala University: Uppsala Universitet, Chemistry-Ångström, SWEDEN
| | - Alina Sekretareva
- Uppsala University: Uppsala Universitet, Chemistry, Ångström laboratory, Lägerhyddsvägen 1, 75237, Uppsala, SWEDEN
| |
Collapse
|
3
|
Parlak O. 241 Epidermal electronics for diagnostics and therapy in dermatology. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
4
|
McCuskey SR, Chatsirisupachai J, Zeglio E, Parlak O, Panoy P, Herland A, Bazan GC, Nguyen TQ. Current Progress of Interfacing Organic Semiconducting Materials with Bacteria. Chem Rev 2021; 122:4791-4825. [PMID: 34714064 DOI: 10.1021/acs.chemrev.1c00487] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Microbial bioelectronics require interfacing microorganisms with electrodes. The resulting abiotic/biotic platforms provide the basis of a range of technologies, including energy conversion and diagnostic assays. Organic semiconductors (OSCs) provide a unique strategy to modulate the interfaces between microbial systems and external electrodes, thereby improving the performance of these incipient technologies. In this review, we explore recent progress in the field on how OSCs, and related materials capable of charge transport, are being used within the context of microbial systems, and more specifically bacteria. We begin by examining the electrochemical communication modes in bacteria and the biological basis for charge transport. Different types of synthetic organic materials that have been designed and synthesized for interfacing and interrogating bacteria are discussed next, followed by the most commonly used characterization techniques for evaluating transport in microbial, synthetic, and hybrid systems. A range of applications is subsequently examined, including biological sensors and energy conversion systems. The review concludes by summarizing what has been accomplished so far and suggests future design approaches for OSC bioelectronics materials and technologies that hybridize characteristic properties of microbial and OSC systems.
Collapse
Affiliation(s)
- Samantha R McCuskey
- Department of Chemistry, National University of Singapore, Singapore 119077, Singapore
| | - Jirat Chatsirisupachai
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Erica Zeglio
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm 17177, Sweden
| | - Onur Parlak
- Dermatology and Venereology Division, Department of Medicine(Solna), Karolinska Institute, Stockholm 17177, Sweden.,AIMES Center of Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Stockholm 17177, Sweden
| | - Patchareepond Panoy
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| | - Anna Herland
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm 17177, Sweden.,AIMES Center of Integrated Medical and Engineering Sciences, Department of Neuroscience, Karolinska Institute, Stockholm 17177, Sweden
| | - Guillermo C Bazan
- Department of Chemistry, National University of Singapore, Singapore 119077, Singapore
| | - Thuc-Quyen Nguyen
- Center for Polymers and Organic Solids & Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| |
Collapse
|
5
|
Parlak O, Richter-Dahlfors A. Bacterial Sensing and Biofilm Monitoring for Infection Diagnostics. Macromol Biosci 2020; 20:e2000129. [PMID: 32588553 DOI: 10.1002/mabi.202000129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/01/2020] [Indexed: 12/21/2022]
Abstract
Recent insights into the rapidly emerging field of bacterial sensing and biofilm monitoring for infection diagnostics are discussed as well as recent key developments and emerging technologies in the field. Electrochemical sensing of bacteria and bacterial biofilm via synthetic, natural, and engineered recognition, as well as direct redox-sensing approaches via algorithm-based optical sensing, and tailor-made optotracing technology are discussed. These technologies are highlighted to answer the very critical question: "how can fast and accurate bacterial sensing and biofilm monitoring be achieved? Following on from that: "how can these different sensing concepts be translated for use in infection diagnostics? A central obstacle to this transformation is the absence of direct and fast analysis methods that provide high-throughput results and bio-interfaces that can control and regulate the means of communication between biological and electronic systems. Here, the overall progress made to date in building such translational efforts at the level of an individual bacterial cell to a bacterial community is discussed.
Collapse
Affiliation(s)
- Onur Parlak
- AIMES-Center for the Advancement of Integrated Medical and Engineering Science, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, SE-171 77, Sweden.,Department of Neuroscience, Karolinska Institutet, Stockholm, SE-171 77, Sweden
| | - Agneta Richter-Dahlfors
- AIMES-Center for the Advancement of Integrated Medical and Engineering Science, Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, SE-171 77, Sweden.,Department of Neuroscience, Karolinska Institutet, Stockholm, SE-171 77, Sweden.,Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, SE-100 44, Sweden
| |
Collapse
|
6
|
Keene ST, Fogarty D, Cooke R, Casadevall CD, Salleo A, Parlak O. Wearable Organic Electrochemical Transistor Patch for Multiplexed Sensing of Calcium and Ammonium Ions from Human Perspiration. Adv Healthc Mater 2019; 8:e1901321. [PMID: 31714014 DOI: 10.1002/adhm.201901321] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/18/2019] [Indexed: 12/21/2022]
Abstract
Wearable health monitoring has garnered considerable interest from the healthcare industry as an evolutionary alternative to standard practices with the ability to provide rapid, off-site diagnosis and patient-monitoring. In particular, sweat-based wearable biosensors offer a noninvasive route to continuously monitor a variety of biomarkers for a range of physiological conditions. Both the accessibility and wealth of information of sweat make it an ideal target for noninvasive devices that can aid in early diagnosis of disease or to monitor athletic performance. Here, the integration of ammonium (NH4 + ) and calcium (Ca2+ ) ion-selective membranes with a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-based (PEDOT:PSS) organic electrochemical transistor (OECT) for multiplexed sensing of NH4 + and Ca2+ in sweat with high sensitivity and selectivity is reported for the first time. The presented wearable sweat sensor is designed by combining a flexible and stretchable styrene-ethylene-butene-styrene substrate with a laser-patterned microcapillary channel array for direct sweat acquisition and delivery to the ion-selective OECT. The resulting dermal sensor exhibits a wide working range between 0.01 × 10-3 and 100 × 10-3 m, well within the physiological levels of NH4 + and Ca2+ in sweat. The integrated devices are successfully implemented with both ex situ measurements and on human subjects with real-time analysis using a wearable sensor assembly.
Collapse
Affiliation(s)
- Scott T. Keene
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| | - Daragh Fogarty
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| | - Ross Cooke
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| | - Carlos D. Casadevall
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| | - Alberto Salleo
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| | - Onur Parlak
- Department of Materials Science and Engineering Stanford University 450 Serra Mall Stanford CA 94305 USA
| |
Collapse
|
7
|
Parlak O, Keene ST, Marais A, Curto VF, Salleo A. Molecularly selective nanoporous membrane-based wearable organic electrochemical device for noninvasive cortisol sensing. Sci Adv 2018; 4:eaar2904. [PMID: 30035216 PMCID: PMC6054510 DOI: 10.1126/sciadv.aar2904] [Citation(s) in RCA: 241] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 06/04/2018] [Indexed: 05/18/2023]
Abstract
Wearable biosensors have emerged as an alternative evolutionary development in the field of healthcare technology due to their potential to change conventional medical diagnostics and health monitoring. However, a number of critical technological challenges including selectivity, stability of (bio)recognition, efficient sample handling, invasiveness, and mechanical compliance to increase user comfort must still be overcome to successfully bring devices closer to commercial applications. We introduce the integration of an electrochemical transistor and a tailor-made synthetic and biomimetic polymeric membrane, which acts as a molecular memory layer facilitating the stable and selective molecular recognition of the human stress hormone cortisol. The sensor and a laser-patterned microcapillary channel array are integrated in a wearable sweat diagnostics platform, providing accurate sweat acquisition and precise sample delivery to the sensor interface. The integrated devices were successfully used with both ex situ methods using skin-like microfluidics and on human subjects with on-body real-sample analysis using a wearable sensor assembly.
Collapse
Affiliation(s)
- Onur Parlak
- Department of Materials Science and Engineering, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Scott Tom Keene
- Department of Materials Science and Engineering, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Andrew Marais
- Department of Materials Science and Engineering, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Vincenzo F. Curto
- Department of Bioelectronics, Ecole Nationale Supérieure des Mines, Centre Microélectronique de Provence–École nationale supérieure des mines de Saint-Étienne, Center Microelectronics De Provence Georges Charpak, 880 Avenue de Mimet, Gardanne 13541, France
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| |
Collapse
|
8
|
Pappa AM, Parlak O, Scheiblin G, Mailley P, Salleo A, Owens RM. Organic Electronics for Point-of-Care Metabolite Monitoring. Trends Biotechnol 2017; 36:45-59. [PMID: 29196057 DOI: 10.1016/j.tibtech.2017.10.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/26/2017] [Accepted: 10/31/2017] [Indexed: 01/14/2023]
Abstract
In this review we focus on demonstrating how organic electronic materials can solve key problems in biosensing thanks to their unique material properties and implementation in innovative device configurations. We highlight specific examples where these materials solve multiple issues related to complex sensing environments, and we benchmark these examples by comparing them to state-of-the-art commercially available sensing using alternative technologies. We have categorized our examples by sample type, focusing on sensing from body fluids in vitro and on wearable sensors, which have attracted significant interest owing to their integration with everyday life activities. We finish by describing a future trend for in vivo, implantable sensors, which aims to build on current progress from sensing in biological fluids ex vivo.
Collapse
Affiliation(s)
- Anna-Maria Pappa
- Department of Bioelectronics, École Nationale Supérieure des Mines, Centre Microélectronique de Provence (CMP)-École Nationale Supérieure des Mines de Saint-Étienne (EMSE), Microélectronique et Objets Communicants (MOC), 13541 Gardanne, France; Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 OAS, UK; Equal contributions
| | - Onur Parlak
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA; Equal contributions
| | - Gaetan Scheiblin
- Commissariat à l'Energie Atomique (CEA), Laboratoire d'Électronique des Technologies de l'Information (LETI), MINATEC Campus, 38054 Grenoble, France; Equal contributions
| | - Pascal Mailley
- Commissariat à l'Energie Atomique (CEA), Laboratoire d'Électronique des Technologies de l'Information (LETI), MINATEC Campus, 38054 Grenoble, France
| | - Alberto Salleo
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Roisin M Owens
- Department of Bioelectronics, École Nationale Supérieure des Mines, Centre Microélectronique de Provence (CMP)-École Nationale Supérieure des Mines de Saint-Étienne (EMSE), Microélectronique et Objets Communicants (MOC), 13541 Gardanne, France; Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 OAS, UK.
| |
Collapse
|
9
|
Ozdemir D, Bestepe N, Faki S, Kilicarslan A, Parlak O, Ersoy R, Cakir B. Comparison of thyroid fine needle aspiration biopsy results before and after implementation of Bethesda classification. Cytopathology 2017; 28:400-406. [DOI: 10.1111/cyt.12437] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 01/21/2023]
Affiliation(s)
- D. Ozdemir
- Department of Endocrinology and Metabolism; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| | - N. Bestepe
- Department of Endocrinology and Metabolism; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| | - S. Faki
- Department of Endocrinology and Metabolism; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| | - A. Kilicarslan
- Department of Pathology; Ataturk Education and Research Hospital; Ankara Turkey
| | - O. Parlak
- Department of General Surgery; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| | - R. Ersoy
- Department of Endocrinology and Metabolism; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| | - B. Cakir
- Department of Endocrinology and Metabolism; School of Medicine; Ankara Yildirim Beyazit University; Ankara Turkey
| |
Collapse
|
10
|
Dellal FD, Özdemir D, Tam AA, Baser H, Tatli Dogan H, Parlak O, Ersoy R, Cakir B. Clinicopathological features of thyroid cancer in the elderly compared to younger counterparts: single-center experience. J Endocrinol Invest 2017; 40:471-479. [PMID: 27885512 DOI: 10.1007/s40618-016-0577-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/02/2016] [Indexed: 12/17/2022]
Abstract
PURPOSE The incidence of thyroid cancer is increased in elderly patients. It tends to be larger and have more aggressive characteristics in these patients. Our aim was to compare features of thyroid carcinoma in geriatric and non-geriatric patients. METHODS In total, 933 patients with thyroid cancer were retrospectively reviewed. Thyroid functions, ultrasonography features of malignant nodules, cytological and histopathological findings and the rates of recurrence and persistence were compared in patients ≥65 and <65 years old. RESULTS There were 153 malignant foci in 109 (11.7%) patients ≥65 and 1185 malignant foci in 824 (88.3%) patients <65 years old. Mean nodule diameter was significantly higher in geriatric patients (p = 0.008). Most of the ultrasonographical features of malignant nodules were similar in two groups. Hypoechoic halo was observed in 16.4 and 28.6% of malignant nodules in geriatric and non-geriatric group, respectively (p = 0.034). There was no significant difference in cytological diagnosis. Histopathologically, tumor diameter, rates of microcarcinomas and incidentality were similar. Of all cancer types, 88.8% in geriatric and 93.9% in non-geriatric group were papillary thyroid cancer (p = 0.028). Hurthle cell cancer constituted 3.9 and 1.1% of carcinomas in geriatric and non-geriatric patients, respectively (p = 0.015); 2.0 and 0.2% of tumors in geriatric and non-geriatric group were anaplastic, respectively (p = 0.012). Capsular and vascular invasion, extrathyroidal extension, persistence and recurrence rates were similar. CONCLUSIONS Rates of anaplastic cancer and Hurthle cell cancer which is known to have worser prognosis among other differentiated thyroid cancers are increased in geriatric ages. Cytological evaluation of thyroid nodules should strongly be considered due to increased tendency for aggressive tumor types in these patients.
Collapse
Affiliation(s)
- F D Dellal
- Department of Endocrinology and Metabolism, Ataturk Training and Research Hospital, Universiteler Mahallesi Bilkent Caddesi No:1, 06800, Cankaya, Ankara, Turkey.
| | - D Özdemir
- Department of Endocrinology and Metabolism, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - A A Tam
- Department of Endocrinology and Metabolism, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - H Baser
- Department of Endocrinology and Metabolism, Ataturk Training and Research Hospital, Universiteler Mahallesi Bilkent Caddesi No:1, 06800, Cankaya, Ankara, Turkey
| | - H Tatli Dogan
- Department of Pathology, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - O Parlak
- Department of Surgery, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - R Ersoy
- Department of Endocrinology and Metabolism, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| | - B Cakir
- Department of Endocrinology and Metabolism, Faculty of Medicine, Yildirim Beyazit University, Ankara, Turkey
| |
Collapse
|
11
|
Parlak O, İncel A, Uzun L, Turner AP, Tiwari A. Structuring Au nanoparticles on two-dimensional MoS2 nanosheets for electrochemical glucose biosensors. Biosens Bioelectron 2017; 89:545-550. [DOI: 10.1016/j.bios.2016.03.024] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/06/2016] [Accepted: 03/12/2016] [Indexed: 11/29/2022]
|
12
|
Parlak O, Beyazit S, Tse-Sum-Bui B, Haupt K, Turner APF, Tiwari A. Programmable bioelectronics in a stimuli-encoded 3D graphene interface. Nanoscale 2016; 8:9976-9981. [PMID: 27121984 DOI: 10.1039/c6nr02355j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The ability to program and mimic the dynamic microenvironment of living organisms is a crucial step towards the engineering of advanced bioelectronics. Here, we report for the first time a design for programmable bioelectronics, with 'built-in' switchable and tunable bio-catalytic performance that responds simultaneously to appropriate stimuli. The designed bio-electrodes comprise light and temperature responsive compartments, which allow the building of Boolean logic gates (i.e."OR" and "AND") based on enzymatic communications to deliver logic operations.
Collapse
Affiliation(s)
- Onur Parlak
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 581 83 Linköping, Sweden.
| | | | | | | | | | | |
Collapse
|
13
|
Osikoya AO, Parlak O, Murugan NA, Dikio ED, Moloto H, Uzun L, Turner AP, Tiwari A. Acetylene-sourced CVD-synthesised catalytically active graphene for electrochemical biosensing. Biosens Bioelectron 2016; 89:496-504. [PMID: 27157880 DOI: 10.1016/j.bios.2016.03.063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 11/29/2022]
Abstract
In this study, we have demonstrated the use of chemical vapour deposition (CVD) grown-graphene to develop a highly-ordered graphene-enzyme electrode for electrochemical biosensing. The graphene sheets were deposited on 1.00mm thick copper sheet at 850°C using acetylene (C2H2) as carbon source in an argon (Ar) and nitrogen (N2) atmosphere. An anionic surfactant was used to increase wettability and hydrophilicity of graphene; thereby facilitating the assembly of biomolecules on the electrode surface. Meanwhile, the theoretical calculations confirmed the successful modification of hydrophobic nature of graphene through the anionic surface assembly, which allowed high-ordered immobilisation of glucose oxidase (GOx) on the graphene. The electrochemical sensing activities of the graphene-electrode was explored as a model for bioelectrocatalysis. The bioelectrode exhibited a linear response to glucose concentration ranging from 0.2 to 9.8mM, with sensitivity of 0.087µA/µM/cm2 and a detection limit of 0.12µM (S/N=3). This work sets the stage for the use of acetylene-sourced CVD-grown graphene as a fundamental building block in the fabrication of electrochemical biosensors and other bioelectronic devices.
Collapse
Affiliation(s)
- Adeniyi Olugbenga Osikoya
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden; Applied Chemistry and Nanoscience Laboratory, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark, South Africa
| | - Onur Parlak
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden
| | - N Arul Murugan
- Virtual Laboratory for Molecular Probes, Division of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Ezekiel Dixon Dikio
- Applied Chemistry and Nanoscience Laboratory, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark, South Africa
| | - Harry Moloto
- Applied Chemistry and Nanoscience Laboratory, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark, South Africa
| | - Lokman Uzun
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden; Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Anthony Pf Turner
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden
| | - Ashutosh Tiwari
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 58183 Linköping, Sweden; Tekidag AB, UCS, Mjärdevi Science Park, Teknikringen 4A, SE 583 30 Linköping, Sweden; Vinoba Bhave Research Institute, Sirsa Road, Saidabad, Allahabad 221508, India.
| |
Collapse
|
14
|
|
15
|
İncel A, Güner T, Parlak O, Demir MM. Null Extinction of Ceria@silica Hybrid Particles: Transparent Polystyrene Composites. ACS Appl Mater Interfaces 2015; 7:27539-27546. [PMID: 26594909 DOI: 10.1021/acsami.5b09818] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Scattering of light in optical materials, particularly in composites based on transparent polymer and inorganic pigment nanoparticles, is a chronic problem. It might originate mainly from light scattering because of a refractive index mismatch between the particles and transparent polymer matrix. Thus, the intensity of light is rapidly diminished and optical transparency is reduced. Refractive index matching between the pigment core and the surrounding transparent matrix using a secondary component at the interface (shell) has recently appeared as a promising approach to alter light scattering. Here, CeO2 (ceria) nanoparticles with a diameter of 25 nm are coated with a SiO2 (silica) shell with various thicknesses in a range of 6.5-67.5 nm using the Stöber method. When the hybrid core-shell particles are dispersed into transparent polystyrene (PS), the transmission of the freestanding PS composite films increases over both the ultraviolet (UV) and visible region as the shell thickness increases particularly at 37.5 nm. The increase of transmission can be attributed to the reduction in the scattering coefficient of the hybrid particles. On the other hand, the particles in tetrahydrofuran (THF) absorb over UV and the intensity of absorption shows a systematic decrease as the shell thickness increases. Thus, the silica shell suppresses not only the scattering coefficient but also the molar absorptivity of the core ceria particles. The experimental results regarding the target shell thickness to develop low extinction (scattering + absorption) composites show a qualitative agreement with the predictions of Effective Medium Theory.
Collapse
Affiliation(s)
- Anıl İncel
- Department of Materials Science and Engineering, İzmir Institute of Technology , Gülbahçe Köyü, Urla, 35430 İzmir, Turkey
| | - Tuğrul Güner
- Department of Materials Science and Engineering, İzmir Institute of Technology , Gülbahçe Köyü, Urla, 35430 İzmir, Turkey
| | - Onur Parlak
- Department of Materials Science and Engineering, İzmir Institute of Technology , Gülbahçe Köyü, Urla, 35430 İzmir, Turkey
| | - Mustafa M Demir
- Department of Materials Science and Engineering, İzmir Institute of Technology , Gülbahçe Köyü, Urla, 35430 İzmir, Turkey
| |
Collapse
|
16
|
Parlak O, Ashaduzzaman M, Kollipara SB, Tiwari A, Turner APF. Switchable Bioelectrocatalysis Controlled by Dual Stimuli-Responsive Polymeric Interface. ACS Appl Mater Interfaces 2015; 7:23837-23847. [PMID: 26440202 DOI: 10.1021/acsami.5b06048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The engineering of bionanointerfaces using stimuli-responsive polymers offers a new dimension in the design of novel bioelectronic interfaces. The integration of electrode surfaces with stimuli-responsive molecular cues provides a direct control and ability to switch and tune physical and chemical properties of bioelectronic interfaces in various biodevices. Here, we report a dual-responsive biointerface employing a positively responding dual-switchable polymer, poly(NIPAAm-co-DEAEMA)-b-HEAAm, to control and regulate enzyme-based bioelectrocatalysis. The design interface exhibits reversible activation-deactivation of bioelectrocatalytic reactions in response to change in temperature and in pH, which allows manipulation of biomolecular interactions to produce on/off switchable conditions. Using electrochemical measurements, we demonstrate that interfacial bioelectrochemical properties can be tuned over a modest range of temperature (i.e., 20-60 °C) and pH (i.e., pH 4-8) of the medium. The resulting dual-switchable interface may have important implications not only for the design of responsive biocatalysis and on-demand operation of biosensors, but also as an aid to elucidating electron-transport pathways and mechanisms in living organisms by mimicking the dynamic properties of complex biological environments and processes.
Collapse
Affiliation(s)
- Onur Parlak
- Biosensors and Bioelectronics Centre, IFM, Linköping University , S-58183 Linköping, Sweden
| | - Md Ashaduzzaman
- Biosensors and Bioelectronics Centre, IFM, Linköping University , S-58183 Linköping, Sweden
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka , Dhaka 1000, Bangladesh
| | - Suresh B Kollipara
- Biosensors and Bioelectronics Centre, IFM, Linköping University , S-58183 Linköping, Sweden
| | - Ashutosh Tiwari
- Biosensors and Bioelectronics Centre, IFM, Linköping University , S-58183 Linköping, Sweden
- Tekidag AB, UCS , Mjärdevi Science Park, Teknikringen 4A, SE 583 30 Linköping, Sweden
| | - Anthony P F Turner
- Biosensors and Bioelectronics Centre, IFM, Linköping University , S-58183 Linköping, Sweden
| |
Collapse
|
17
|
|
18
|
Abstract
Switchable interfaces can deliver functionally reversible reactivity with their corresponding analytes, which allows one to positively respond to the activity of biological elements, including enzymes and other biomolecules, through an encoded stimulus.
Collapse
Affiliation(s)
- Onur Parlak
- Biosensors and Bioelectronics Centre
- IFM
- Linköping University
- S-58183 Linköping
- Sweden
| | - Anthony P. F. Turner
- Biosensors and Bioelectronics Centre
- IFM
- Linköping University
- S-58183 Linköping
- Sweden
| | - Ashutosh Tiwari
- Biosensors and Bioelectronics Centre
- IFM
- Linköping University
- S-58183 Linköping
- Sweden
| |
Collapse
|
19
|
Shukla SK, Parlak O, Shukla SK, Mishra S, Turner APF, Tiwari A. Self-Reporting Micellar Polymer Nanostructures for Optical Urea Biosensing. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5012799] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sudheesh K. Shukla
- Biosensors and
Bioelectronics Centre, Department of Physics, Chemistry
and Biology, IFM-Linköping University, S-58183 Linköping, Sweden
| | - Onur Parlak
- Biosensors and
Bioelectronics Centre, Department of Physics, Chemistry
and Biology, IFM-Linköping University, S-58183 Linköping, Sweden
| | - S. K. Shukla
- Department
of Polymer Science, Bhaskaracharya College of Applied
Sciences, University of Delhi, New Delhi 110 075, India
| | - Sachin Mishra
- Department
of Polymer Science, Bhaskaracharya College of Applied
Sciences, University of Delhi, New Delhi 110 075, India
| | - Anthony P. F. Turner
- Biosensors and
Bioelectronics Centre, Department of Physics, Chemistry
and Biology, IFM-Linköping University, S-58183 Linköping, Sweden
| | - Ashutosh Tiwari
- Biosensors and
Bioelectronics Centre, Department of Physics, Chemistry
and Biology, IFM-Linköping University, S-58183 Linköping, Sweden
| |
Collapse
|
20
|
Parlak O, Turner APF, Tiwari A. On/Off-switchable zipper-like bioelectronics on a graphene interface. Adv Mater 2014; 26:482-486. [PMID: 24142541 DOI: 10.1002/adma.201303075] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 07/31/2013] [Indexed: 06/02/2023]
Abstract
An on/off-switchable graphene-based zipper-like interface is architectured for efficient bioelectrocatalysis. The graphene interface transduces a temperature input signal into structural changes of the membrane, resulting in the amplification of electrochemical signals and their transformation into the gated transport of molecules through the membrane.
Collapse
Affiliation(s)
- Onur Parlak
- Biosensors and Bioelectronics Centre, IFM, Linköping University, 581 83, Linköping, Sweden
| | | | | |
Collapse
|
21
|
Parlak O, Sisman CI, Ucar AE, Kusdemir A, Yalcin S. The effect of carnitine on liver regeneration after partial hepatectomy. ACTA ACUST UNITED AC 2014; 115:125-30. [DOI: 10.4149/bll_2014_027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
22
|
Parlak O, Oztura I, Baklan B. Soleus MEP-80 response latency in restless legs syndrome. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
23
|
Oeurn Chey C, Yandi;Ashutosh Tiwari W, K Patra H, Tengdelius M, Golabi M, Parlak O, Imani R, A. I. Elhag S. Impact Of Nanotoxicology Towards Technologists To End Users. ACTA ACUST UNITED AC 2013. [DOI: 10.5185/amlett.2013.8002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
24
|
Parlak O, Tiwari A, Turner APF, Tiwari A. Template-directed hierarchical self-assembly of graphene based hybrid structure for electrochemical biosensing. Biosens Bioelectron 2013; 49:53-62. [PMID: 23708818 DOI: 10.1016/j.bios.2013.04.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 04/03/2013] [Accepted: 04/05/2013] [Indexed: 11/24/2022]
Abstract
A template-directed self-assembly approach, using functionalised graphene as a fundamental building block to obtain a hierarchically ordered graphene-enzyme-nanoparticle bioelectrode for electrochemical biosensing, is reported. An anionic surfactant was used to prepare a responsive, functional interface and direct the assembly on the surface of the graphene template. The surfactant molecules altered the electrostatic charges of graphene, thereby providing a convenient template-directed assembly approach to a free-standing planar sheet of sp(2) carbons. Cholesterol oxidase and cholesterol esterase were assembled on the surface of graphene by intermolecular attractive forces while gold nanoparticles are incorporated into the hetero-assembly to enhance the electro-bio-catalytic activity. Hydrogen peroxide and cholesterol were used as two representative analytes to demonstrate the electrochemical sensing performance of the graphene-based hybrid structure. The bioelectrode exhibited a linear response to H2O2 from 0.01 to 14 mM, with a detection limit of 25 nM (S/N=3). The amperometric response with cholesterol had a linear range from 0.05 to 0.35 mM, sensitivity of 3.14 µA/µM/cm(2) and a detection limit of 0.05 µM. The apparent Michaelis-Menten constant (Km(app)) was calculated to be 1.22 mM. This promising approach provides a novel methodology for template-directed bio-self-assembly over planar sp(2) carbons of a graphene sheet and furnishes the basis for fabrication of ultra-sensitive and efficient electrochemical biosensors.
Collapse
Affiliation(s)
- Onur Parlak
- Biosensors and Bioelectronics Centre, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
| | | | | | | |
Collapse
|
25
|
Parlak O, Demir MM. Toward transparent nanocomposites based on polystyrene matrix and PMMA-grafted CeO2 nanoparticles. ACS Appl Mater Interfaces 2011; 3:4306-14. [PMID: 21970464 DOI: 10.1021/am200983h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The association of transparent polymer and nanosized pigment particles offers attractive optical materials for various potential and existing applications. However, the particles embedded into polymers scatter light due to refractive index (RI) mismatch and reduce transparency of the resulting composite material. In this study, optical composites based on polystyrene (PS) matrix and poly(methyl methacrylate) (PMMA)-grafted CeO(2) hybrid particles were prepared. CeO(2) nanoparticles with an average diameter of 18 ± 8 nm were precipitated by treating Ce(NO(3))·6H(2)O with urea in the presence of a polymerizable surfactant, 3-methacyloxypropyltrimethoxy silane. PMMA chains were grafted on the surface of the nanoparticles upon free radical in situ solution polymerization. While blending of unmodified CeO(2) particles with PS resulted in opaque films, the transparency of the composite films was remarkably enhanced when prepared by PMMA-grafted CeO(2) hybrid particles, particularly those having a PMMA thickness of 9 nm. The improvement in transparency is presumably due to the reduction in RI mismatch between CeO(2) particles and the PS matrix when using PMMA chains at the interface.
Collapse
Affiliation(s)
- Onur Parlak
- Department of Chemistry, İzmir Institute of Technology, Gülbahçe Köyü, Urla 35430 İzmir, Turkey
| | | |
Collapse
|
26
|
Karateke A, Haliloglu B, Parlak O, Cam C, Coksuer H. Intestinal vaginoplasty: seven years' experience of a tertiary center. Fertil Steril 2010; 94:2312-5. [DOI: 10.1016/j.fertnstert.2010.01.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Revised: 12/20/2009] [Accepted: 01/04/2010] [Indexed: 10/19/2022]
|
27
|
Robertson AHF, Parlak O, Rízaoğlu T, Ünlügenç Ü, İnan N, Tasli K, Ustaömer T. Tectonic evolution of the South Tethyan ocean: evidence from the Eastern Taurus Mountains (Elaziğ region, SE Turkey). ACTA ACUST UNITED AC 2007. [DOI: 10.1144/gsl.sp.2007.272.01.14] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractGeological information from the Eastern Taurus Mountains, part of the Tethyan (South Neotethyan) suture zone exposed in the Elaziğ region, is used here to test existing tectonic hypotheses and to develop a new tectonic model. Five main tectonic stages are identified: (1) Mid-Late Triassic rifting-spreading of Southern Neotethys; (2) Late Cretaceous northward subduction-accretion of ophiolites and arc-related units; (3) Mid-Eocene subduction-related extension; (4) Early-Mid-Miocene collision and southward thrusting over the Arabian Foreland; (6) Plio-Quaternary, post-collisional left-lateral tectonic escape. During the Late Cretaceous (c. 90 Ma) northward intra-oceanic subduction generated regionally extensive oceanic lithosphere as the İspendere, Kömürhan, Guleman and Killan ophiolites of supra-subduction zone type. A northward-dipping subduction zone was activated along the northern margin of the ocean basin (Keban Platform), followed by accretion of Upper Cretaceous ophiolites in latest Cretaceous time. As subduction continued the accreted ophiolites and overriding northern margin (Keban Platform) were intruded by calc-alkaline plutons, still during latest Cretaceous time. The northern margin was covered by shallow-marine mixed clastic-carbonate sediments in latest Cretaceous-Early Palaeogene time. Northward subduction during the Mid-Eocene was accompanied by extension of the northern continental margin, generating large fault-bounded, extensional basins that were infilled with shallow- to deep-water sediments and subduction-influenced volcanic rocks (Maden Group). Thick debris flows (‘olistostromes’) accumulated along the oceanward edge of the active margin. The partly assembled allochthon finally collided with the Arabian continental margin to the south during Early-Mid-Miocene time in response to oblique convergence; the entire thrust stack was then emplaced southwards over the downflexed Arabian Foreland. Left-lateral strike-slip (tectonic escape) along the East Anatolian Fault Zone ensued.
Collapse
Affiliation(s)
- A. H. F. Robertson
- Grant Institute of Earth Science, School of GeoSciencesWest Mains Road, Edinburgh EH9 3JW, UK (e-mail: )
| | - O. Parlak
- Department of Geological Engineering, Çukurova University01330, Balcali, Adana, Turkey
| | - T. Rízaoğlu
- Department of Geological Engineering, Çukurova University01330, Balcali, Adana, Turkey
| | - Ü. Ünlügenç
- Department of Geological Engineering, Çukurova University01330, Balcali, Adana, Turkey
| | - N. İnan
- Department of Geological Engineering, Mersin UniversityMersin 33343, Turkey
| | - K. Tasli
- Department of Geological Engineering, Mersin UniversityMersin 33343, Turkey
| | - T. Ustaömer
- Department of Geological Engineering, Istanbul University34310-Avcilar, Istanbul, Turkey
| |
Collapse
|