1
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Bekele S, Singh K, Helton E, Farajollahi S, Naik RR, Dennis P, Kelley-Loughnane N, Berry R. Molecular Dynamics Investigation into pH Dependent Metal Binding of the Intrinsically Disordered Worm Jaw Protein, Nvjp-1. J Phys Chem B 2022; 126:6614-6623. [PMID: 36006408 PMCID: PMC9465683 DOI: 10.1021/acs.jpcb.2c02807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Sclerotization of the Nereis virens jaw
is mediated
by metal binding to the histidine-rich jaw protein, Nvjp-1. Previous
studies showed that the mechanical properties of Nvjp-1 hydrogels
could be modulated with zinc binding as well as the associated anion.
Here, we show that the mechanical properties of Nvjp-1 hydrogels can
be modulated by pH and that zinc binding to Nvjp-1 is stable at both
acidic and alkaline pH conditions. To probe the mechanism of Zn2+ binding to Nvjp-1 at different pH conditions, we utilized
all atom molecular dynamics simulations employing a polarizable force
field. At low pH conditions, polar residues predominantly interacted
with Zn2+, with at most two residues interacting with a
given zinc ion. Surprisingly, little to no Zn2+ binding
was observed with the abundant Nvjp-1 acidic residues, which form
salt-bridges with the protonated histidines to effectively block their
binding to Zn2+ ions. As the pH was shifted to alkaline
conditions, Zn2+ binding residues reconfigured to form
additional coordination bonds with histidine, resulting in a reduction
in the radius of gyration that correlated with hydrogel sclerotization.
Furthermore, acetate ions were shown to facilitate the capture of
zinc ions through association with protonated histidines at low pH,
freeing acidic residues to interact with Zn2+ ions and
increasing the number of Zn2+ ions that diffuse into the
Nvjp-1 interior. Thus, these studies provide valuable molecular insights
into how amino acid residues in Nvjp-1 manage metal salt binding and
coordination in hydrogels as a function of the pH and ionic environments.
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Affiliation(s)
- Selemon Bekele
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States.,UES Inc., Dayton, Ohio 45432, United States
| | - Kristi Singh
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States.,UES Inc., Dayton, Ohio 45432, United States
| | - Evan Helton
- Boonshoft School of Medicine, Wright State University, Dayton, Ohio 45435, United States
| | - Sanaz Farajollahi
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States.,UES Inc., Dayton, Ohio 45432, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, WPAFB, Ohio 45433, United States
| | - Patrick Dennis
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States
| | - Nancy Kelley-Loughnane
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States
| | - Rajiv Berry
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433-7131, United States
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2
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Kuang Z, Luginsland J, Thomas RJ, Dennis PB, Kelley-Loughnane N, Roach WP, Naik RR. Molecular dynamics simulations explore effects of electric field orientations on spike proteins of SARS-CoV-2 virions. Sci Rep 2022; 12:12986. [PMID: 35906467 PMCID: PMC9334739 DOI: 10.1038/s41598-022-17009-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 07/19/2022] [Indexed: 11/21/2022] Open
Abstract
Emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its current worldwide spread have caused a pandemic of acute respiratory disease COVID-19. The virus can result in mild to severe, and even to fatal respiratory illness in humans, threatening human health and public safety. The spike (S) protein on the surface of viral membrane is responsible for viral entry into host cells. The discovery of methods to inactivate the entry of SARS-CoV-2 through disruption of the S protein binding to its cognate receptor on the host cell is an active research area. To explore other prevention strategies against the quick spread of the virus and its mutants, non-equilibrium molecular dynamics simulations have been employed to explore the possibility of manipulating the structure–activity of the SARS-CoV-2 spike glycoprotein by applying electric fields (EFs) in both the protein axial directions and in the direction perpendicular to the protein axis. We have found out the application of EFs perpendicular to the protein axis is most effective in denaturing the HR2 domain which plays critical role in viral-host membrane fusion. This finding suggests that varying irradiation angles may be an important consideration in developing EF based non-invasive technologies to inactivate the virus.
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Affiliation(s)
- Zhifeng Kuang
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, OH, 45433, USA.
| | - John Luginsland
- Work Performed With Confluent Sciences, LLC, Albuquerque, NM, 87111, USA
| | - Robert J Thomas
- 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, San Antonio, TX, 78234, USA
| | - Patrick B Dennis
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, OH, 45433, USA
| | - Nancy Kelley-Loughnane
- Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Dayton, OH, 45433, USA
| | - William P Roach
- Air Force Office of Scientific Research, Arlington, VA, 22203, USA
| | - Rajesh R Naik
- 711Th Human Performance Wing, Air Force Research Laboratory, WPAFB, Dayton, OH, 45433, USA.
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3
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Wang Z, Zhou Q, Seth A, Kolla S, Luan J, Jiang Q, Rathi P, Gupta P, Morrissey JJ, Naik RR, Singamaneni S. Plasmonically-enhanced competitive assay for ultrasensitive and multiplexed detection of small molecules. Biosens Bioelectron 2022; 200:113918. [PMID: 34990957 PMCID: PMC8852303 DOI: 10.1016/j.bios.2021.113918] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 08/03/2021] [Revised: 12/12/2021] [Accepted: 12/22/2021] [Indexed: 01/13/2023]
Abstract
Novel methods that enable facile, ultrasensitive and multiplexed detection of low molecular weight organic compounds such as metabolites, drugs, additives, and organic pollutants are valuable in biomedical research, clinical diagnosis, food safety and environmental monitoring. Here, we demonstrate a simple, rapid, and ultrasensitive method for detection and quantification of small molecules by implementing a competitive immunoassay with an ultrabright fluorescent nanolabel, plasmonic fluor. Plasmonic-fluor is comprised of a polymer-coated gold nanorod and bovine serum albumin conjugated with molecular fluorophores and biotin. The synthesis steps and fluorescence emission of plasmonic-fluor was characterized by UV-vis spectroscopy, transmission electron microscopy, and fluorescence microscopy. Plasmon-enhanced competitive assay can be completed within 20 min and exhibited more than 30-fold lower limit-of-detection for cortisol compared to conventional competitive ELISA. The plasmon-enhanced competitive immunoassay when implemented as partition-free digital assay enabled further improvement in sensitivity. Further, spatially multiplexed plasmon-enhanced competitive assay enabled the simultaneous detection of two analytes (cortisol and fluorescein). This simple, rapid, and ultrasensitive method can be broadly employed for multiplexed detection of various small molecules in research, in-field and clinical settings.
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Affiliation(s)
- Zheyu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Qingjun Zhou
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Anushree Seth
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Samhitha Kolla
- Department of Computer Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Jingyi Luan
- Auragent Bioscience LLC, St. Louis, MO, 63108, USA
| | | | - Priya Rathi
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Prashant Gupta
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Jeremiah J Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA; Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Rajesh R Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, 45433, USA.
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA; Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA.
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4
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Sim D, Brothers MC, Slocik JM, Islam AE, Maruyama B, Grigsby CC, Naik RR, Kim SS. Biomarkers and Detection Platforms for Human Health and Performance Monitoring: A Review. Adv Sci (Weinh) 2022; 9:e2104426. [PMID: 35023321 PMCID: PMC8895156 DOI: 10.1002/advs.202104426] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/19/2021] [Indexed: 05/04/2023]
Abstract
Human health and performance monitoring (HHPM) is imperative to provide information necessary for protecting, sustaining, evaluating, and improving personnel in various occupational sectors, such as industry, academy, sports, recreation, and military. While various commercially wearable sensors are on the market with their capability of "quantitative assessments" on human health, physical, and psychological states, their sensing is mostly based on physical traits, and thus lacks precision in HHPM. Minimally or noninvasive biomarkers detectable from the human body, such as body fluid (e.g., sweat, tear, urine, and interstitial fluid), exhaled breath, and skin surface, can provide abundant additional information to the HHPM. Detecting these biomarkers with novel or existing sensor technologies is emerging as critical human monitoring research. This review provides a broad perspective on the state of the art biosensor technologies for HHPM, including the list of biomarkers and their physiochemical/physical characteristics, fundamental sensing principles, and high-performance sensing transducers. Further, this paper expands to the additional scope on the key technical challenges in applying the current HHPM system to the real field.
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Affiliation(s)
- Daniel Sim
- Air Force Research Laboratory711th Human Performance WingWright‐Patterson Air Force BaseOH 45433USA
- Research Associateship Program (RAP)the National Academies of Sciences, Engineering and MedicineWashingtonDC20001USA
- Integrative Health & Performance Sciences DivisionUES Inc.DaytonOH45432USA
| | - Michael C. Brothers
- Air Force Research Laboratory711th Human Performance WingWright‐Patterson Air Force BaseOH 45433USA
- Integrative Health & Performance Sciences DivisionUES Inc.DaytonOH45432USA
| | - Joseph M. Slocik
- Air Force Research LaboratoryMaterials and Manufacturing DirectorateWright‐Patterson Air Force BaseOH 45433USA
| | - Ahmad E. Islam
- Air Force Research LaboratorySensors DirectorateWright‐Patterson Air Force BaseOH 45433USA
| | - Benji Maruyama
- Air Force Research LaboratoryMaterials and Manufacturing DirectorateWright‐Patterson Air Force BaseOH 45433USA
| | - Claude C. Grigsby
- Air Force Research Laboratory711th Human Performance WingWright‐Patterson Air Force BaseOH 45433USA
| | - Rajesh R. Naik
- Air Force Research Laboratory711th Human Performance WingWright‐Patterson Air Force BaseOH 45433USA
| | - Steve S. Kim
- Air Force Research Laboratory711th Human Performance WingWright‐Patterson Air Force BaseOH 45433USA
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5
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Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has rapidly spread and resulted in the global pandemic of COVID-19. Although IgM/IgG serology assay has been widely used, with the entire spike or nucleocapsid antigens, they only indicate the presence or absence of antibodies against these proteins but are not specific to the neutralization antibodies, therefore providing only generic information about infection stage and possible future immune protection. Novel technologies enabling easy-to-use and sensitive detection of multiple specific antibodies simultaneously will facilitate precise diagnosis of infection stage, prediction of clinical outcomes, and evaluation of future immune protection upon viral exposure or vaccination. Here, we demonstrate a rapid and ultrasensitive quantification method for epitope-specific antibodies, including different isotypes and subclasses, in a multiplexed manner. Using an ultrabright fluorescent nanolabel, plasmonic-fluor, this novel assay can be completed in 20 min and more importantly, the limit of detection of the plasmon-enhanced immunoassay for SARS-CoV-2 antibodies is as much as 100-fold lower compared to the assays relying on enzymatic amplification of colorimetric signals. Using convalescent patient plasma, we demonstrate that this biodetection method reveals the patient-to-patient variability in immune response as evidenced by the variations in whole protein and epitope-specific antibodies. This cost-effective, rapid, and ultrasensitive plasmonically enhanced multiplexed epitope-specific serological assay has the potential to be broadly employed in the detection of specific antibodies, which may benefit the advanced epidemiology studies and enable improvement of the clinical outcomes and prediction of the future protection against the SARS-CoV-2.
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Affiliation(s)
- Zheyu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Jeremiah J. Morrissey
- Department of Anesthesiology, Division of Clinical and Translational Research, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Lin Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Yixuan Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Qingjun Zhou
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Rajesh R. Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, 45433, USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA
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6
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Hart CR, McLendon PM, Naik RR. Dealing with a Pandemic: Emerging Tools, Solutions, and Challenges. Health Secur 2022; 20:109-115. [PMID: 35021893 DOI: 10.1089/hs.2021.0145] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
As a result of the COVID-19 pandemic, nations across the globe have responded by attempting to understand how the virus was spreading in their communities, in order to isolate cases, reduce morbidity and mortality, and avoid overwhelming healthcare facilities. In this article, we describe the global response to tracking the virus, and discuss new technological advances in molecular testing that have been deployed and developed to track and mitigate COVID-19. We also discuss how the successes and failures observed in the COVID-19 pandemic can be extrapolated to improve our ability to respond to the next pandemic.
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Affiliation(s)
- Corey R Hart
- Corey R. Hart, PhD, is a Senior Physiologist/Technical Integration Manager and Rajesh R. Naik, PhD, is Chief Scientist; both in the 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH. Patrick M. McLendon, PhD, is a Senior Scientist/Senior Technical Program Manager, Integrative Health and Performance Sciences Division, UES, Inc., Dayton, OH. The views expressed are those of the authors and do not reflect the official guidance or position of the United States Government, the Department of Defense or of the United States Air Force
| | - Patrick M McLendon
- Corey R. Hart, PhD, is a Senior Physiologist/Technical Integration Manager and Rajesh R. Naik, PhD, is Chief Scientist; both in the 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH. Patrick M. McLendon, PhD, is a Senior Scientist/Senior Technical Program Manager, Integrative Health and Performance Sciences Division, UES, Inc., Dayton, OH. The views expressed are those of the authors and do not reflect the official guidance or position of the United States Government, the Department of Defense or of the United States Air Force
| | - Rajesh R Naik
- Corey R. Hart, PhD, is a Senior Physiologist/Technical Integration Manager and Rajesh R. Naik, PhD, is Chief Scientist; both in the 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH. Patrick M. McLendon, PhD, is a Senior Scientist/Senior Technical Program Manager, Integrative Health and Performance Sciences Division, UES, Inc., Dayton, OH. The views expressed are those of the authors and do not reflect the official guidance or position of the United States Government, the Department of Defense or of the United States Air Force
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7
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Liu L, Wang Z, Wang Y, Luan J, Morrissey JJ, Naik RR, Singamaneni S. Plasmonically Enhanced CRISPR/Cas13a-Based Bioassay for Amplification-Free Detection of Cancer-Associated RNA. Adv Healthc Mater 2021; 10:e2100956. [PMID: 34369102 PMCID: PMC8542602 DOI: 10.1002/adhm.202100956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/25/2021] [Indexed: 12/15/2022]
Abstract
Novel methods that enable sensitive, accurate and rapid detection of RNA would not only benefit fundamental biological studies but also serve as diagnostic tools for various pathological conditions, including bacterial and viral infections and cancer. Although highly sensitive, existing methods for RNA detection involve long turn-around time and extensive capital equipment. Here, an ultrasensitive and amplification-free RNA quantification method is demonstrated by integrating CRISPR-Cas13a system with an ultrabright fluorescent nanolabel, plasmonic fluor. This plasmonically enhanced CRISPR-powered assay exhibits nearly 1000-fold lower limit-of-detection compared to conventional assay relying on enzymatic reporters. Using a xenograft tumor mouse model, it is demonstrated that this novel bioassay can be used for ultrasensitive and quantitative monitoring of cancer biomarker (lncRNA H19). The novel biodetection approach described here provides a rapid, ultrasensitive, and amplification-free strategy that can be broadly employed for detection of various RNA biomarkers, even in resource-limited settings.
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Affiliation(s)
- Lin Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Zheyu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Yixuan Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
| | - Jeremiah J. Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Rajesh R. Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson Air Force Base, Dayton, OH, 45433, USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO, 63130, USA
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, 63110, USA
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8
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Wang Y, Wang Z, Gupta P, Morrissey JJ, Naik RR, Singamaneni S. Enhancing the Stability of COVID-19 Serological Assay through Metal-Organic Framework Encapsulation. Adv Healthc Mater 2021; 10:e2100410. [PMID: 34297470 PMCID: PMC8427112 DOI: 10.1002/adhm.202100410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/16/2021] [Indexed: 12/30/2022]
Abstract
Enzyme‐linked immunosorbent assay is widely utilized in serologic assays, including COVID‐19, for the detection and quantification of antibodies against SARS‐CoV‐2. However, due to the limited stability of the diagnostic reagents (e.g., antigens serving as biorecognition elements) and biospecimens, temperature‐controlled storage and handling conditions are critical. This limitation among others makes biodiagnostics in resource‐limited settings, where refrigeration and electricity are inaccessible or unreliable, particularly challenging. In this work, metal–organic framework encapsulation is demonstrated as a simple and effective method to preserve the conformational epitopes of antigens immobilized on microtiter plate under non‐refrigerated storage conditions. It is demonstrated that in situ growth of zeolitic imidazolate framework‐90 (ZIF‐90) renders excellent stability to surface‐bound SARS‐CoV‐2 antigens, thereby maintaining the assay performance under elevated temperature (40 °C) for up to 4 weeks. As a complementary method, the preservation of plasma samples from COVID‐19 patients using ZIF‐90 encapsulation is also demonstrated. The energy‐efficient approach demonstrated here will not only alleviate the financial burden associated with cold‐chain transportation, but also improve the disease surveillance in resource‐limited settings with more reliable clinical data.
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Affiliation(s)
- Yixuan Wang
- Department of Mechanical Engineering and Materials Science Institute of Materials Science and Engineering Washington University in St. Louis Saint Louis MO 63130 USA
| | - Zheyu Wang
- Department of Mechanical Engineering and Materials Science Institute of Materials Science and Engineering Washington University in St. Louis Saint Louis MO 63130 USA
| | - Prashant Gupta
- Department of Mechanical Engineering and Materials Science Institute of Materials Science and Engineering Washington University in St. Louis Saint Louis MO 63130 USA
| | - Jeremiah J. Morrissey
- Department of Anesthesiology Washington University in St. Louis St. Louis MO 63110 USA
- Siteman Cancer Center Washington University School of Medicine St. Louis MO 63130 USA
| | - Rajesh R. Naik
- 711th Human Performance Wing Air Force Research Laboratory Wright Patterson Air Force Base Dayton OH 45433 USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science Institute of Materials Science and Engineering Washington University in St. Louis Saint Louis MO 63130 USA
- Siteman Cancer Center Washington University School of Medicine St. Louis MO 63130 USA
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9
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Nelson MT, Slocik JM, Romer EJ, Mankus CI, Agans RT, Naik RR, Hussain SM. Examining cellular responses to reconstituted antibody protein liquids. Sci Rep 2021; 11:17066. [PMID: 34426606 PMCID: PMC8382709 DOI: 10.1038/s41598-021-96375-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 08/09/2021] [Indexed: 12/02/2022] Open
Abstract
Protein ionic liquids (PIL) are a new class of biologic stabilizers designed to protect the functionality and extend the shelf-life of biotechnological and therapeutic agents making them more readily available, and resistant to austere environments. Protein biorecognition elements such as monoclonal antibodies are commonly utilized therapeutics that require the robust stabilization offered by PILs, but biocompatibility remains an important issue. This study has focused on characterizing the biocompatibility of an antibody based PIL by exposing multiple cells types to a cationized immunoglobulin suspended in an anionic liquid (IgG-IL). The IgG-IL caused no significant alterations in cellular health for all three cell types with treatments < 12.5 µg/mL. Concentrations ≥ 12.5 µg/mL resulted in significant necrotic cell death in A549 and HaCaT cells, and caspase associated cell death in HepG2 cells. In addition, all cells displayed evidence of oxidative stress and IL-8 induction in response to IgG-IL exposures. Therapeutic Ig can be utilized with a wide dose range that extends into concentrations we have found to exhibit cytotoxicity raising a toxicity concern and a need for more extensive understanding of the biocompatibility of IgG-ILs.
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Affiliation(s)
- M Tyler Nelson
- 711th Human Performance Wing, Airman Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA.
| | - Joseph M Slocik
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA.,UES Inc., Dayton, OH, 45433, USA
| | - Eric J Romer
- 711th Human Performance Wing, Airman Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA.,UES Inc., Dayton, OH, 45433, USA
| | | | | | - Rajesh R Naik
- 711th Human Performance Wing, Airman Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Saber M Hussain
- 711th Human Performance Wing, Airman Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA
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10
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Abstract
The Competition-Enhanced Ligand Selection (CompELS) approach was used to identify aptamer candidates for spherical gold nanoparticles (AuNPs). This approach differs from conventional Systematic Evolution of Ligands by EXponential enrichment (SELEX)-based aptamer screening by eliminating repeated elution and polymerase chain reaction (PCR) amplification steps of bound candidate sequences between each selection round to continually enrich the candidate aptamer pool with oligonucleotides remaining from an earlier SELEX selection round. Instead, a new pool of unenriched oligonucleotides is added during each CompELS selection round to compete with existing target-bound oligonucleotides species for target binding sites. In this study, 24 aptamer candidates for AuNPs were identified using the CompELS approach and then compared to reveal similarities in their primary structures and their predicted secondary structures. No strong patterns in individual base identities (position-dependent) nor in segments of consecutive bases (independent of position) prevailed among the identified sequences. Motifs in predicted secondary structures, on the other hand, were shared among otherwise unrelated aptamer sequences. These motifs were revealed using a systematic classification and enumeration of distinct secondary structure elements, namely, hairpins, duplexes, single-stranded segments, interior loops, bulges, and multibranched loops.
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Affiliation(s)
| | - Patrick Dennis
- Materials & Manufacturing Directorate, Soft Matter Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
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11
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Liang C, Luan J, Wang Z, Jiang Q, Gupta R, Cao S, Liu KK, Morrissey JJ, Kharasch ED, Naik RR, Singamaneni S. Gold Nanorod Size-Dependent Fluorescence Enhancement for Ultrasensitive Fluoroimmunoassays. ACS Appl Mater Interfaces 2021; 13:11414-11423. [PMID: 33620204 DOI: 10.1021/acsami.0c20303] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 06/12/2023]
Abstract
Plasmon-enhanced fluorescence (PEF) is a simple and highly effective approach for improving the signal-to-noise ratio and sensitivity of various fluorescence-based bioanalytical techniques. Here, we show that the fluorescence enhancement efficacy of gold nanorods (AuNRs), which are widely employed for PEF, is highly dependent on their absolute dimensions (i.e., length and diameter). Notably, an increase in the dimensions (length × diameter) of the AuNRs from 46 × 14 to 120 × 38 nm2 while holding the aspect ratio constant leads to nearly 300% improvement in fluorescence enhancement efficiency. Further increase in the AuNR size leads to a decrease of the fluorescence enhancement efficiency. Through finite-difference time-domain (FDTD) simulation, we reveal that the size-dependent fluorescence enhancement efficiency of AuNR stems from the size-dependent electromagnetic field around the plasmonic nanostructures. AuNRs with optimal dimensions resulted in a nearly 120-fold enhancement in the ensemble fluorescence emission from molecular fluorophores bound to the surface. These plasmonic nanostructures with optimal dimensions also resulted in a nearly 30-fold improvement in the limit of detection of human interleukin-6 (IL-6) compared to AuNRs with smaller size, which are routinely employed in PEF.
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Affiliation(s)
- Chao Liang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
| | - Zheyu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
| | - Qisheng Jiang
- Auragent Bioscience LLC, St Louis, Missouri 63108, United States
| | - Rohit Gupta
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
| | - Sisi Cao
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
| | - Keng-Ku Liu
- Auragent Bioscience LLC, St Louis, Missouri 63108, United States
| | - Jeremiah J Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, Missouri 63110, United States
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, Missouri 63110, United States
| | - Evan D Kharasch
- Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina 27710, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, Missouri 63130, United States
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, Missouri 63110, United States
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12
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Parab AD, Dureja R, Rao R, Slocik JM, Naik RR, Walsh TR, Knecht MR. Identification of Parameters Controlling Peptide-Driven Graphene Exfoliation in Aqueous Media. Langmuir 2021; 37:1152-1163. [PMID: 33427477 DOI: 10.1021/acs.langmuir.0c03058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bio-inspired approaches represent potentially transformational methods to fabricate and activate non-natural materials for applications ranging from biomedical diagnostics to energy harvesting platforms. Recently, bio-based methods for the exfoliation of graphene in water have been developed, resulting in peptide-capped nanosheets; however, a clear understanding of the reaction system and peptide ligand structure remains unclear, limiting the advance of such approaches. Here the effects of reaction solution conditions and peptide ligand structure were systematically examined for graphene exfoliation, identifying key parameters to optimize material production. For this, the P1 peptide, identified with affinity for graphene, was exploited to drive exfoliation of bulk graphite to generate the final materials. The peptide was modified at both the N- and C-terminus with a 10-carbon chain fatty acid to explore the effects of a hydrophobic domain on the exfoliation process. The system was examined as a function of sonication time, pH, reagent concentration, and graphite source, where the final materials were fully characterized using a suite of approaches. Collectively, these results demonstrated that maximum graphene production was achieved using the parent P1 peptide after 12 h of sonication under basic conditions. While the exfoliation efficiency was slightly lower for the fatty acid modified peptides, the graphene produced using these biomolecules had fewer defects incorporated, potentially from the wrapping of the nanosheet edge by the aliphatic domain. Such results are important to provide key reaction designs to optimize the reproducibility of graphene exfoliation using biomimetic approaches.
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Affiliation(s)
- Atul D Parab
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States
| | - Rohan Dureja
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States
| | - Rahul Rao
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Joseph M Slocik
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Rajesh R Naik
- Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Tiffany R Walsh
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Marc R Knecht
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, United States
- Dr. J. T. Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, UM Life Science Technology Building, 1951 NW 7thAve, Suite 475, Miami, Florida 33136, United States
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13
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Lawrence RL, Olagunju MO, Liu Y, Mahalingam K, Slocik JM, Naik RR, Frenkel AI, Knecht MR. Remote controlled optical manipulation of bimetallic nanoparticle catalysts using peptides. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00189b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Remote optical manipulation of peptide ligands on bimetallic nanoparticle surfaces allows for tunable catalytic reactivity.
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Affiliation(s)
| | | | - Yang Liu
- Department of Materials Science and Chemical Engineering
- Stony Brook University
- Stony Brook
- USA
| | | | | | - Rajesh R. Naik
- Air Force Research Laboratory
- Wright-Patterson Air Force Base
- USA
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering
- Stony Brook University
- Stony Brook
- USA
- Chemistry Division
| | - Marc R. Knecht
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
- Dr. J.T. Macdonald Foundation Biomedical Nanotechnology Institute
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14
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Hershewe JM, Wiseman WD, Kath JE, Buck CC, Gupta MK, Dennis PB, Naik RR, Jewett MC. Characterizing and Controlling Nanoscale Self-Assembly of Suckerin-12. ACS Synth Biol 2020; 9:3388-3399. [PMID: 33201684 DOI: 10.1021/acssynbio.0c00442] [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] [Indexed: 11/28/2022]
Abstract
Structural proteins such as "suckerins" present promising avenues for fabricating functional materials. Suckerins are a family of naturally occurring block copolymer-type proteins that comprise the sucker ring teeth of cephalopods and are known to self-assemble into supramolecular networks of nanoconfined β-sheets. Here, we report the characterization and controllable, nanoscale self-assembly of suckerin-12 (S12). We characterize the impacts of salt, pH, and protein concentration on S12 solubility, secondary structure, and self-assembly. In doing so, we identify conditions for fabricating ∼100 nm nanoassemblies (NAs) with narrow size distributions. Finally, by installing a noncanonical amino acid (ncAA) into S12, we demonstrate the assembly of NAs that are covalently conjugated with a hydrophobic fluorophore and the ability to change self-assembly and β-sheet content by PEGylation. This work presents new insights into the biochemistry of suckerin-12 and demonstrates how ncAAs can be used to expedite and fine-tune the design of protein materials.
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Affiliation(s)
- Jasmine M. Hershewe
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
- Chemistry of Life Processes Institute, Northwestern University, 2170 Campus Drive, Evanston, Illinois 60208−3120, United States
- Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
| | - William D. Wiseman
- Chemistry of Life Processes Institute, Northwestern University, 2170 Campus Drive, Evanston, Illinois 60208−3120, United States
- Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
- Master of Biotechnology Program, Technological Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208−3120, United States
| | - James E. Kath
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
- Chemistry of Life Processes Institute, Northwestern University, 2170 Campus Drive, Evanston, Illinois 60208−3120, United States
- Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
| | - Chelsea C. Buck
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
- Chemical and Materials Engineering Department, University of Dayton, 300 College Park Avenue, Dayton, Ohio 45469, United States
| | - Maneesh K. Gupta
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Patrick B. Dennis
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Rajesh R. Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Michael C. Jewett
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
- Chemistry of Life Processes Institute, Northwestern University, 2170 Campus Drive, Evanston, Illinois 60208−3120, United States
- Center for Synthetic Biology, Northwestern University, 2145 Sheridan Road, Technological Institute E136, Evanston, Illinois 60208−3120, United States
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, 676 North Saint Clair Street, Suite 1200, Chicago, Illinois 60611−3068, United States
- Simpson Querrey Institute, Northwestern University, 303 East Superior Street, Suite 11-131, Chicago, Illinois 60611−2875, United States
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15
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Kuang Z, Singh KM, Oliver DJ, Dennis PB, Perry CC, Naik RR. Gamma estimator of Jarzynski equality for recovering binding energies from noisy dynamic data sets. Nat Commun 2020; 11:5517. [PMID: 33139719 PMCID: PMC7606380 DOI: 10.1038/s41467-020-19233-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 09/28/2020] [Indexed: 11/26/2022] Open
Abstract
A fundamental problem in thermodynamics is the recovery of macroscopic equilibrated interaction energies from experimentally measured single-molecular interactions. The Jarzynski equality forms a theoretical basis in recovering the free energy difference between two states from exponentially averaged work performed to switch the states. In practice, the exponentially averaged work value is estimated as the mean of finite samples. Numerical simulations have shown that samples having thousands of measurements are not large enough for the mean to converge when the fluctuation of external work is above 4 kBT, which is easily observable in biomolecular interactions. We report the first example of a statistical gamma work distribution applied to single molecule pulling experiments. The Gibbs free energy of surface adsorption can be accurately evaluated even for a small sample size. The values obtained are comparable to those derived from multi-parametric surface plasmon resonance measurements and molecular dynamics simulations. Measuring interaction energies from experimentally measured single-molecular interactions is challenging. Here, the authors report a gamma work distribution applied to single molecule pulling events for estimating peptide absorption free energy.
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Affiliation(s)
- Zhifeng Kuang
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Kristi M Singh
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Daniel J Oliver
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
| | - Patrick B Dennis
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Carole C Perry
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
| | - Rajesh R Naik
- Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, 45433, USA.
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16
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Wen X, Ou Y, Zarick HF, Zhang X, Hmelo AB, Victor QJ, Paul EP, Slocik JM, Naik RR, Bellan LM, Lin EC, Bardhan R. PRADA: Portable Reusable Accurate Diagnostics with nanostar Antennas for multiplexed biomarker screening. Bioeng Transl Med 2020; 5:e10165. [PMID: 33005736 PMCID: PMC7510456 DOI: 10.1002/btm2.10165] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/23/2020] [Accepted: 05/03/2020] [Indexed: 02/06/2023] Open
Abstract
Precise monitoring of specific biomarkers in biological fluids with accurate biodiagnostic sensors is critical for early diagnosis of diseases and subsequent treatment planning. In this work, we demonstrated an innovative biodiagnostic sensor, portable reusable accurate diagnostics with nanostar antennas (PRADA), for multiplexed biomarker detection in small volumes (~50 μl) enabled in a microfluidic platform. Here, PRADA simultaneously detected two biomarkers of myocardial infarction, cardiac troponin I (cTnI), which is well accepted for cardiac disorders, and neuropeptide Y (NPY), which controls cardiac sympathetic drive. In PRADA immunoassay, magnetic beads captured the biomarkers in human serum samples, and gold nanostars (GNSs) "antennas" labeled with peptide biorecognition elements and Raman tags detected the biomarkers via surface-enhanced Raman spectroscopy (SERS). The peptide-conjugated GNS-SERS barcodes were leveraged to achieve high sensitivity, with a limit of detection (LOD) of 0.0055 ng/ml of cTnI, and a LOD of 0.12 ng/ml of NPY comparable with commercially available test kits. The innovation of PRADA was also in the regeneration and reuse of the same sensor chip for ~14 cycles. We validated PRADA by testing cTnI in 11 de-identified cardiac patient samples of various demographics within a 95% confidence interval and high precision profile. We envision low-cost PRADA will have tremendous translational impact and be amenable to resource-limited settings for accurate treatment planning in patients.
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Affiliation(s)
- Xiaona Wen
- Department of Chemical and Biomolecular EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Yu‐Chuan Ou
- Department of Chemical and Biomolecular EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Holly F. Zarick
- Department of Chemical and Biomolecular EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Xin Zhang
- Department of Mechanical EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Anthony B. Hmelo
- Department of Physics and AstronomyVanderbilt UniversityNashvilleTennesseeUSA
| | - Quinton J. Victor
- Department of Chemical and Biomolecular EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Eden P. Paul
- Department of Chemical and Biomolecular EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Joseph M. Slocik
- Materials and Manufacturing Directorate and 711th Human Performance Wing, Air Force Research LaboratoryWright‐Patterson Air Force BaseDaytonOhioUSA
| | - Rajesh R. Naik
- Materials and Manufacturing Directorate and 711th Human Performance Wing, Air Force Research LaboratoryWright‐Patterson Air Force BaseDaytonOhioUSA
| | - Leon M. Bellan
- Department of Mechanical EngineeringVanderbilt UniversityNashvilleTennesseeUSA
| | - Eugene C. Lin
- Department of Chemistry and BiochemistryNational Chung Cheng UniversityChiayiTaiwan
| | - Rizia Bardhan
- Department of Chemical and Biological EngineeringIowa State UniversityAmesIowaUSA
- Nanovaccine InstituteIowa State UniversityAmesIowaUSA
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17
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Brljak N, Parab AD, Rao R, Slocik JM, Naik RR, Knecht MR, Walsh TR. Material composition and peptide sequence affects biomolecule affinity to and selectivity for h-boron nitride and graphene. Chem Commun (Camb) 2020; 56:8834-8837. [PMID: 32632430 DOI: 10.1039/d0cc02635b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanosheet heterostructures offer emergent optical/electronic properties. These could be achieved using selective materials binding peptides, but lack of understanding of selectivity impedes advancement. Here we examine peptides with affinity for graphene or h-BN using quantitative experiments and molecular simulation to identify traits for design of 2D nanosheet selective peptides.
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Affiliation(s)
- Nermina Brljak
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA.
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18
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Farajollahi S, Dennis PB, Crosby MG, Slocik JM, Pelton AT, Hampton CM, Drummy LF, Yang SJ, Silberstein MN, Gupta MK, Naik RR. Disulfide Crosslinked Hydrogels Made From the Hydra Stinging Cell Protein, Minicollagen-1. Front Chem 2020; 7:950. [PMID: 32039158 PMCID: PMC6989532 DOI: 10.3389/fchem.2019.00950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 12/31/2019] [Indexed: 11/28/2022] Open
Abstract
Minicollagens from cnidarian nematocysts are attractive potential building blocks for the creation of strong, lightweight and tough polymeric materials with the potential for dynamic and reconfigurable crosslinking to modulate functionality. In this study, the Hydra magnipapillata minicollagen-1 isoform was recombinantly expressed in bacteria, and a high throughput purification protocol was developed to generate milligram levels of pure protein without column chromatography. The resulting minicollagen-1 preparation demonstrated spectral properties similar to those observed with collagen and polyproline sequences as well as the ability to self-assemble into oriented fibers and bundles. Photo-crosslinking with Ru(II)( bpy ) 3 2 + was used to create robust hydrogels that were analyzed by mechanical testing. Interestingly, the minicollagen-1 hydrogels could be dissolved with reducing agents, indicating that ruthenium-mediated photo-crosslinking was able to induce disulfide metathesis to create the hydrogels. Together, this work is an important first step in creating minicollagen-based materials whose properties can be manipulated through static and reconfigurable post-translational modifications.
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Affiliation(s)
- Sanaz Farajollahi
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
- UES Inc., Dayton, OH, United States
| | - Patrick B. Dennis
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Marquise G. Crosby
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Joseph M. Slocik
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
- UES Inc., Dayton, OH, United States
| | - Anthony T. Pelton
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
- UES Inc., Dayton, OH, United States
| | - Cheri M. Hampton
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
- UES Inc., Dayton, OH, United States
| | - Lawrence F. Drummy
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Steven J. Yang
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, United States
| | - Meredith N. Silberstein
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, United States
| | - Maneesh K. Gupta
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
| | - Rajesh R. Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, United States
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19
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Xiao X, Kuang Z, Burke BJ, Chushak Y, Farmer BL, Mirau PA, Naik RR, Hall CK. In Silico Discovery and Validation of Neuropeptide-Y-Binding Peptides for Sensors. J Phys Chem B 2019; 124:61-68. [DOI: 10.1021/acs.jpcb.9b09439] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xingqing Xiao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Zhifeng Kuang
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - B. J. Burke
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Yaroslav Chushak
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Barry L. Farmer
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Peter A. Mirau
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Rajesh R. Naik
- Materials and Manufacturing Directorate and & 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Carol K. Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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20
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Abstract
The use of biomolecules has been invaluable at generating and controlling optical chirality in nanomaterials; however, the structure and properties of the chiral biotemplate are not well understood due to the complexity of peptide-nanoparticle interactions. In this study, we show that the complex interactions between d-peptides and gold nanomaterials led to a chiral restructuring of peptides as demonstrated by circular dichroism and proteolytic cleavage of d-peptides via gold-mediated inversion of peptide chirality. The gold nanoparticles synthesized using d-peptide produce a highly ordered atomic surface and restructured peptide bonds for enzyme cleavage. Differences in gold nanoparticle catalyzed reduction of 4-nitrophenol were observed on the basis of the chiral peptide used in nanoparticle synthesis. Notably, the proteolytic cleavage of d-peptides on gold provides an opportunity for designing nanoparticle based therapeutics to treat peptide venoms, access new chemistries, or modulate the catalytic activity of nanomaterials.
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Affiliation(s)
- Joseph M Slocik
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
| | - Patrick B Dennis
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
| | - Alexander O Govorov
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, United States
| | - Nicholas M Bedford
- School of Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Yang Ren
- X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
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21
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Gupta P, Luan J, Wang Z, Cao S, Bae SH, Naik RR, Singamaneni S. On-Demand Electromagnetic Hotspot Generation in Surface-Enhanced Raman Scattering Substrates via "Add-On" Plasmonic Patch. ACS Appl Mater Interfaces 2019; 11:37939-37946. [PMID: 31525866 DOI: 10.1021/acsami.9b12402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electromagnetic hotspots at the interstices of plasmonic assemblies are recognized to be the most potent sites for surface-enhanced Raman scattering (SERS). We demonstrate a novel "add-on" electromagnetic hotspot formation technique, which significantly improves the sensitivity of conventional SERS substrates composed of individual plasmonic nanostructures. The novel approach demonstrated here involves the transfer of "plasmonic patch", a transparent, flexible, and conformal elastomeric film adsorbed with plasmonic nanostructures, onto a conventional SERS substrate. The addition of the plasmonic patch onto a conventional SERS substrate following the analyte capture results in the formation of electromagnetic hotspots and hence a large SERS enhancement. The application of the plasmonic patch improves the sensitivity and limit of detection of conventional SERS substrates by up to ∼100-fold. The transfer of the plasmonic patch also effectively transforms the SERS-inactive gold mirror to a highly SERS-active "particle-on-mirror" system. Furthermore, we demonstrate that the "add-on" technique can be effectively utilized for the vapor-phase detection of explosives such as trinitrotoluene (TNT) using peptide recognition elements. We believe that the on-demand hotspot formation approach presented here represents a highly versatile and ubiquitously applicable technology readily expandable to any existing SERS substrate without employing complicated modification.
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Affiliation(s)
- Prashant Gupta
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Zheyu Wang
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Sisi Cao
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Sang Hyun Bae
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory , Wright-Patterson Air Force Base , Dayton , Ohio 45433 , United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 , United States
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22
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Sullivan R, Adams MC, Naik RR, Milam VT. Analyzing Secondary Structure Patterns in DNA Aptamers Identified via CompELS. Molecules 2019; 24:molecules24081572. [PMID: 31010064 PMCID: PMC6515186 DOI: 10.3390/molecules24081572] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022] Open
Abstract
In contrast to sophisticated high-throughput sequencing tools for genomic DNA, analytical tools for comparing secondary structure features between multiple single-stranded DNA sequences are less developed. For single-stranded nucleic acid ligands called aptamers, secondary structure is widely thought to play a pivotal role in driving recognition-based binding activity between an aptamer sequence and its specific target. Here, we employ a competition-based aptamer screening platform called CompELS to identify DNA aptamers for a colloidal target. We then analyze predicted secondary structures of the aptamers and a large population of random sequences to identify sequence features and patterns. Our secondary structure analysis identifies patterns ranging from position-dependent score matrixes of individual structural elements to position-independent consensus domains resulting from global alignment.
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Affiliation(s)
- Richard Sullivan
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USA.
| | - Mary Catherine Adams
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USA.
| | - Rajesh R Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright Patterson AFB, OH 45433, USA.
| | - Valeria T Milam
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. NW, Atlanta, GA 30332-0245, USA.
- Wallace H. Coulter, Department of Biomedical Engineering, Georgia Institute of Technology, 313 Ferst Dr., Atlanta, GA 30332, USA.
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr., Atlanta, GA 30332-0363, USA.
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23
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Kim S, Xing L, Islam AE, Hsiao MS, Ngo Y, Pavlyuk OM, Martineau RL, Hampton CM, Crasto C, Slocik J, Kadakia MP, Hagen JA, Kelley-Loughnane N, Naik RR, Drummy LF. In Operando Observation of Neuropeptide Capture and Release on Graphene Field-Effect Transistor Biosensors with Picomolar Sensitivity. ACS Appl Mater Interfaces 2019; 11:13927-13934. [PMID: 30884221 DOI: 10.1021/acsami.8b20498] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 06/09/2023]
Abstract
Transmission electron microscopy (TEM) is being pushed to new capabilities which enable studies on systems that were previously out of reach. Among recent innovations, TEM through liquid cells (LC-TEM) enables in operando observation of biological phenomena. This work applies LC-TEM to the study of biological components as they interact on an abiotic surface. Specifically, analytes or target molecules like neuropeptide Y (NPY) are observed in operando on functional graphene field-effect transistor (GFET) biosensors. Biological recognition elements (BREs) identified using biopanning with affinity to NPY are used to functionalize graphene to obtain selectivity. On working devices capable of achieving picomolar responsivity to neuropeptide Y, LC-TEM reveals translational motion, stochastic positional fluctuations due to constrained Brownian motion, and rotational dynamics of captured analyte. Coupling these observations with the electrical responses of the GFET biosensors in response to analyte capture and/or release will potentially enable new insights leading to more advanced and capable biosensor designs.
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Affiliation(s)
| | - Li Xing
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Ahmad E Islam
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Ming-Siao Hsiao
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Yen Ngo
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Oksana M Pavlyuk
- Department of Biochemistry and Molecular Biology , Wright State University , Dayton , Ohio 45431 , United States
| | - Rhett L Martineau
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Cheri M Hampton
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Cameron Crasto
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Joseph Slocik
- Biological and Nanoscale Technologies Division , UES Inc. , Dayton , Ohio 45432 , United States
| | - Madhavi P Kadakia
- Department of Biochemistry and Molecular Biology , Wright State University , Dayton , Ohio 45431 , United States
| | - Joshua A Hagen
- Rockefeller Neuroscience Institute, School of Medicine , West Virginia University , Morgantown , West Virginia 26506 , United States
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24
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Brothers MC, DeBrosse M, Grigsby CC, Naik RR, Hussain SM, Heikenfeld J, Kim SS. Achievements and Challenges for Real-Time Sensing of Analytes in Sweat within Wearable Platforms. Acc Chem Res 2019; 52:297-306. [PMID: 30688433 DOI: 10.1021/acs.accounts.8b00555] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Physiological sensors in a wearable form have rapidly emerged on the market due to technological breakthroughs and have become nearly ubiquitous with the Apple Watch, FitBit, and other wearable devices. While these wearables mostly monitor simple biometric signatures, new devices that can report on the human readiness level through sensing molecular biomarkers are critical to optimizing the human factor in both commercial sectors and the Department of Defense. The military is particularly interested in real-time, wearable, minimally invasive monitoring of fatigue and human performance to improve the readiness and performance of the war fighter. However, very few devices have ventured into the realm of reporting directly on biomarkers of interest. Primarily this is because of the difficulties of sampling biological fluids in real-time and providing accurate readouts using highly selective and sensitive sensors. When additional restrictions to only use sweat, an excretory fluid, are enforced to minimize invasiveness, the demands on sensors becomes even greater due to the dilution of the biomarkers of interest, as well as variability in salinity, pH, and other physicochemical variables which directly impact the read-out of real-time biosensors. This Account will provide a synopsis not only on exemplary demonstrations and technological achievements toward implementation of real-time, wearable sweat sensors but also on defining problems that still remain toward implementation in wearable devices that can detect molecular biomarkers for real world applications. First, the authors describe the composition of minimally invasive biofluids and then identify what biomarkers are of interest as biophysical indicators. This Account then reviews demonstrated techniques for extracting biofluids from the site of generation and transport to the sensor developed by the authors. Included in this discussion is a detailed description on biosensing recognition elements and transducers developed by the authors to enable generation of selective electrochemical sensing platforms. The authors also discuss ongoing efforts to identify biorecognition elements and the chemistries necessary to enable high affinity, selective biorecognition elements. Finally, this Account presents the requirements for wearable, real-time sensors to be (1) highly stable, (2) portable, (3) reagentless, (4) continuous, and (5) responsive in real-time, before delving into specific methodologies to sense classes of biomarkers that have been explored by academia, government laboratories, and industry. Each platform has its areas of greatest utility, but also come with corresponding weaknesses: (1) ion selective electrodes are robust and have been demonstrated in wearables but are limited to detection of ions, (2) enzymatic sensors enable indirect detection of metabolites and have been demonstrated in wearables, but the compounds that can be detected are limited to a subset of small molecules and the sensors are sensitive to flow, (3) impedance-based sensors can detect a wide range of compounds but require further research and development for deployment in wearables. In conclusion, while substantial progress has been made toward wearable molecular biosensors, substantial barriers remain and need to be solved to enable deployment of minimally invasive, wearable biomarker monitoring devices that can accurately report on psychophysiological status.
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Affiliation(s)
- Michael C. Brothers
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
- UES Inc., Dayton, Ohio 45432, United States
| | - Madeleine DeBrosse
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
- Department of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, Ohio 45221, United States
- Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, Tennessee 37830, United States
| | - Claude C. Grigsby
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Rajesh R. Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Saber M. Hussain
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Jason Heikenfeld
- Department of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Steve S. Kim
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
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25
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Abstract
Competition-enhanced ligand screening (CompELS) was employed to rapidly screen through large DNA libraries to identify single-stranded, oligonucleotide-based ligands called aptamers that bind to a nonbiological target. This previously unreported aptamer screening approach involves the repeated introduction of unenriched random sequence populations during the biopanning process, but avoids iterative elution and polymerase chain reaction (PCR) amplification steps inherent to traditional SELEX (systematic evolution of ligands by exponential enrichment) screening. In this study, 25 aptamers were identified against a gold surface via CompELS and evaluated to identify patterns in primary structures and predicted secondary structures. Following a final one-round competition experiment with the 25 identified aptamers, one particular aptamer sequence (1N) emerged as the most competitive adsorbate species for the gold substrate. Binding analysis indicated at least an order of magnitude difference in the binding affinity of 1N ( Kd = 5.6 × 10-10 M) compared to five other high affinity aptamer candidates ( Kd = 10-8-10-9 M) from identical secondary structure families. Collectively, these studies introduce a rapid, reliable screening and ranking platform along with a classification scheme well-suited for identifying and characterizing aptamers for nonbiological as well as biological targets.
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Affiliation(s)
| | - Joseph M. Slocik
- Materials & Manufacturing Directorate, Soft Matter Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Patrick B. Dennis
- Materials & Manufacturing Directorate, Soft Matter Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
| | - Rajesh R. Naik
- Materials & Manufacturing Directorate, Soft Matter Materials Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States
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26
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Buck CC, Dennis PB, Gupta MK, Grant MT, Crosby MG, Slocik JM, Mirau PA, Becknell KA, Comfort KK, Naik RR. Anion‐Mediated Effects on the Size and Mechanical Properties of Enzymatically Crosslinked Suckerin Hydrogels. Macromol Biosci 2018; 19:e1800238. [DOI: 10.1002/mabi.201800238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/31/2018] [Indexed: 01/26/2023]
Affiliation(s)
| | - Patrick B. Dennis
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | - Maneesh K. Gupta
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | - Marcus T. Grant
- Joint Task Force Civil Support 1504 Madison Ave, Ft. Eustis VA 23604, USA
| | - Marquise G. Crosby
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | | | - Peter A. Mirau
- Materials and Manufacturing Directorate Air Force Research Laboratory 2179 12th St. WPAFB OH 45433 USA
| | | | - Kristen K. Comfort
- Department of Chemical and Materials Engineering University of Dayton Kettering Laboratories 524, 300 College Park Dayton OH 45469 USA
| | - Rajesh R. Naik
- 711 Human Performance Wing Air Force Research Laboratory WPAFB OH 45433 USA
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27
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Gupta MK, Becknell KA, Crosby MG, Bedford NM, Wright J, Dennis PB, Naik RR. Programmable Mechanical Properties from a Worm Jaw-Derived Biopolymer through Hierarchical Ion Exposure. ACS Appl Mater Interfaces 2018; 10:31928-31937. [PMID: 30165014 DOI: 10.1021/acsami.8b10107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mechanisms of biomaterial sclerotization in natural systems promise new insights into how the mechanical properties of engineered materials may be dynamically modulated. One such example involves the proteinaceous jaw of the marine sandworm, Nereis virens. Previously, the mechanical properties of the N. virens jaw were shown to be modulated by Zn binding, a property that was proposed to be enabled by the presence of the histidine-rich jaw protein, Nvjp-1. Here we demonstrate the creation of Nvjp-1-based hydrogels and show that progressive sclerotization of these hydrogels can be accomplished with hierarchical exposure to metal cations and anions. Divalent Zn cations are capable of reversibly sclerotizing the hydrogels through the formation of coordinate cross-links, an effect that is shown to be remarkably specific for Zn. Additionally, the degree of Zn-induced sclerotization is strongly influenced by the identity of the anion present in the hydrogel. Thus, the viscoelastic properties of Nvjp-1 hydrogels can be modulated through programmed, hierarchical exposure to specific cations and anions present in the sclerotizing salts. These observations have resulted in new hydrogel capabilities, such as the creation of anion-controlled shape-memory polymers, and will add to the number of control parameters that can be used to tune the properties of functional hydrogels in a dynamic manner.
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Affiliation(s)
- Maneesh K Gupta
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Kellie A Becknell
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Marquise G Crosby
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Nicholas M Bedford
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Joshua Wright
- Department of Physics , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Patrick B Dennis
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Rajesh R Naik
- 711th Human Performance Wing , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
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28
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Luan J, Morrissey JJ, Wang Z, Derami HG, Liu KK, Cao S, Jiang Q, Wang C, Kharasch ED, Naik RR, Singamaneni S. Add-on plasmonic patch as a universal fluorescence enhancer. Light Sci Appl 2018; 7:29. [PMID: 30839611 PMCID: PMC6107004 DOI: 10.1038/s41377-018-0027-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 04/09/2018] [Accepted: 04/25/2018] [Indexed: 05/13/2023]
Abstract
Fluorescence-based techniques are the cornerstone of modern biomedical optics, with applications ranging from bioimaging at various scales (organelle to organism) to detection and quantification of a wide variety of biological species of interest. However, the weakness of the fluorescence signal remains a persistent challenge in meeting the ever-increasing demand to image, detect, and quantify biological species with low abundance. Here, we report a simple and universal method based on a flexible and conformal elastomeric film with adsorbed plasmonic nanostructures, which we term a "plasmonic patch," that provides large (up to 100-fold) and uniform fluorescence enhancement on a variety of surfaces through simple transfer of the plasmonic patch to the surface. We demonstrate the applications of the plasmonic patch in improving the sensitivity and limit of detection (by more than 100 times) of fluorescence-based immunoassays implemented in microtiter plates and in microarray format. The novel fluorescence enhancement approach presented here represents a disease, biomarker, and application agnostic ubiquitously applicable fundamental and enabling technology to immediately improve the sensitivity of existing analytical methodologies in an easy-to-handle and cost-effective manner, without changing the original procedures of the existing techniques.
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Affiliation(s)
- Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Jeremiah J. Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO 63110 USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO 63110 USA
| | - Zheyu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Hamed Gholami Derami
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Sisi Cao
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Qisheng Jiang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Congzhou Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
| | - Evan D. Kharasch
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO 63110 USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO 63110 USA
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, MO 63110 USA
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO USA
| | - Rajesh R. Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433 USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St Louis, MO 63130 USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO 63110 USA
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29
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Ngo YH, Brothers M, Martin JA, Grigsby CC, Fullerton K, Naik RR, Kim SS. Chemically Enhanced Polymer-Coated Carbon Nanotube Electronic Gas Sensor for Isopropyl Alcohol Detection. ACS Omega 2018; 3:6230-6236. [PMID: 31458805 PMCID: PMC6644726 DOI: 10.1021/acsomega.8b01039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 05/31/2018] [Indexed: 05/10/2023]
Abstract
Breathing-air quality within commercial airline cabins has come under increased scrutiny because of the identification of volatile organic compounds (VOCs) from the engine bleed air used to provide oxygen to cabins. Ideally, a sensor would be placed within the bleed air pipe itself, enabling detection before it permeated through and contaminated the entire cabin. Current gas-phase sensors suffer from issues with selectivity, do not have the appropriate form factor, or are too complex for commercial deployment. Here, we chose isopropyl alcohol (IPA), a main component of de-icer spray used in the aerospace community, as a target analyte: IPA exposure has been hypothesized to be a key component of aerotoxic syndrome in pre, during, and postflight. IPAs proposed mechanism of action is that of an anesthetic and central nervous system depressant. In this work, we describe IPA sensor development by showing (1) the integration of a polymer as an IPA capture matrix, (2) the adoption of a redox chemical additives as an IPA oxidizer, and (3) the application of carbon nanotubes as an electronic sensing conduit. We demonstrate the ability to not only detect IPA at 100-10 000 ppm in unfiltered, laboratory air but also discriminate among IPA, isoprene, and acetone, especially in comparison to a typical photoionization detector. Overall, we show an electronic device that operates at room temperature and responds preferentially to IPA, where the increase in the resistance corresponds directly to the concentration of IPA. Ultimately, this study opens up the pathway to selective electronic sensors that can enable real-time monitoring in a variety of environments for the force health prevention and protection, and the potential through future work to enable low parts-per-million and possibly high parts-per-billion selective detection of gas-phase VOCs of interest.
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Affiliation(s)
- Yen H. Ngo
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
- UES
Inc., Beavercreek, Ohio 45432, United
States
| | - Michael Brothers
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
- UES
Inc., Beavercreek, Ohio 45432, United
States
| | - Jennifer A. Martin
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Claude C. Grigsby
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Kathy Fullerton
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Rajesh R. Naik
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Steve S. Kim
- 711th
Human Performance Wing, Air Force Research
Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
- E-mail:
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30
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Xiao X, Kuang Z, Slocik JM, Tadepalli S, Brothers M, Kim S, Mirau PA, Butkus C, Farmer BL, Singamaneni S, Hall CK, Naik RR. Advancing Peptide-Based Biorecognition Elements for Biosensors Using in-Silico Evolution. ACS Sens 2018; 3:1024-1031. [PMID: 29741092 DOI: 10.1021/acssensors.8b00159] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Sensors for human health and performance monitoring require biological recognition elements (BREs) at device interfaces for the detection of key molecular biomarkers that are measurable biological state indicators. BREs, including peptides, antibodies, and nucleic acids, bind to biomarkers in the vicinity of the sensor surface to create a signal proportional to the biomarker concentration. The discovery of BREs with the required sensitivity and selectivity to bind biomarkers at low concentrations remains a fundamental challenge. In this study, we describe an in-silico approach to evolve higher sensitivity peptide-based BREs for the detection of cardiac event marker protein troponin I (cTnI) from a previously identified BRE as the parental affinity peptide. The P2 affinity peptide, evolved using our in-silico method, was found to have ∼16-fold higher affinity compared to the parent BRE and ∼10 fM (0.23 pg/mL) limit of detection. The approach described here can be applied towards designing BREs for other biomarkers for human health monitoring.
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Affiliation(s)
- Xingqing Xiao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | | | | | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | | | | | | | | | | | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Carol K. Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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31
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Wang C, Wang L, Tadepalli S, Morrissey JJ, Kharasch ED, Naik RR, Singamaneni S. Ultrarobust Biochips with Metal-Organic Framework Coating for Point-of-Care Diagnosis. ACS Sens 2018; 3:342-351. [PMID: 29336151 PMCID: PMC5825292 DOI: 10.1021/acssensors.7b00762] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Most biosensors relying on antibodies as recognition elements fail in harsh environment conditions such as elevated temperatures, organic solvents, or proteases because of antibody denaturation, and require strict storage conditions with defined shelf life, thus limiting their applications in point-of-care and resource-limited settings. Here, a metal-organic framework (MOF) encapsulation is utilized to preserve the biofunctionality of antibodies conjugated to nanotransducers. This study investigates several parameters of MOF coating (including growth time, surface morphology, thickness, and precursor concentrations) that determine the preservation efficacy against different protein denaturing conditions in both dry and wet environments. A plasmonic biosensor based on gold nanorods as the nanotransducers is employed as a model biodiagnostic platform. The preservation efficacy attained through MOF encapsulation is compared to two other commonly employed materials (sucrose and silk fibroin). The results show that MOF coating outperforms sucrose and silk fibroin coatings under several harsh conditions including high temperature (80 °C), dimethylformamide, and protease solution, owing to complete encapsulation, stability in wet environment and ease of removal at point-of-use by the MOF. We believe this study will broaden the applicability of this universal approach for preserving different types of on-chip biodiagnostic reagents and biosensors/bioassays, thus extending the benefits of advanced diagnostic technologies in resource-limited settings.
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Affiliation(s)
- Congzhou Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , Saint Louis, Missouri 63130, United States
| | - Lu Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , Saint Louis, Missouri 63130, United States
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , Saint Louis, Missouri 63130, United States
| | - Jeremiah J Morrissey
- Department of Anesthesiology, Washington University in St. Louis , St. Louis, Missouri 63110, United States
- Siteman Cancer Center, Washington University in St. Louis , St. Louis, Missouri 63110, United States
| | - Evan D Kharasch
- Department of Anesthesiology, Washington University in St. Louis , St. Louis, Missouri 63110, United States
- Siteman Cancer Center, Washington University in St. Louis , St. Louis, Missouri 63110, United States
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine , St. Louis 63110, Missouri, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , Saint Louis, Missouri 63130, United States
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32
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Tadepalli S, Yim J, Cao S, Wang Z, Naik RR, Singamaneni S. Metal-Organic Framework Encapsulation for the Preservation and Photothermal Enhancement of Enzyme Activity. Small 2018; 14:1702382. [PMID: 29323458 DOI: 10.1002/smll.201702382] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [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: 07/12/2017] [Revised: 11/14/2017] [Indexed: 06/07/2023]
Abstract
Interfacing biomolecules with functional materials is a key strategy toward achieving externally-triggered biological function. The rational integration of functional proteins, such as enzymes, with plasmonic nanostructures that exhibit unique optical properties such as photothermal effect provides a means to externally control the enzyme activity. However, due to the labile nature of enzymes, the photothermal effect of plasmonic nanostructures is mostly utilized for the enhancement of the biocatalytic activity of thermophilic enzymes. In order to extend and utilize the photothermal effect to a broader class of enzymes, a means to stabilize the immobilized active protein is essential. Inspired by biomineralization for the encapsulation of soft tissue within protective exteriors in nature, metal-organic framework is utilized to stabilize the enzyme. This strategy provides an effective route to enhance and externally modulate the biocatalytic activity of enzymes bound to functional nanostructures over a broad range of operating environments that are otherwise hostile to the biomolecules.
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Affiliation(s)
- Sirimuvva Tadepalli
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis, St Louis, 63130, MO, USA
| | - Jieun Yim
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis, St Louis, 63130, MO, USA
| | - Sisi Cao
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis, St Louis, 63130, MO, USA
| | - Zheyu Wang
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis, St Louis, 63130, MO, USA
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson, Air Force Base, Dayton, 45433, OH, USA
| | - Srikanth Singamaneni
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis, St Louis, 63130, MO, USA
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33
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Rojas WY, Winter AD, Grote J, Kim SS, Naik RR, Williams AD, Weiland C, Principe E, Fischer DA, Banerjee S, Prendergast D, Campo EM. Strain and Bond Length Dynamics upon Growth and Transfer of Graphene by NEXAFS Spectroscopy from First-Principles and Experiment. Langmuir 2018; 34:1783-1794. [PMID: 29286662 DOI: 10.1021/acs.langmuir.7b03260] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
As the quest toward novel materials proceeds, improved characterization technologies are needed. In particular, the atomic thickness in graphene and other 2D materials renders some conventional technologies obsolete. Characterization technologies at wafer level are needed with enough sensitivity to detect strain in order to inform fabrication. In this work, NEXAFS spectroscopy was combined with simulations to predict lattice parameters of graphene grown on copper and further transferred to a variety of substrates. The strains associated with the predicted lattice parameters are in agreement with experimental findings. The approach presented here holds promise to effectively measure strain in graphene and other 2D systems at wafer levels to inform manufacturing environments.
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Affiliation(s)
- W Y Rojas
- School of Electronic Engineering, Bangor University , Bangor LL57 1UT, United Kingdom
| | - A D Winter
- School of Electronic Engineering, Bangor University , Bangor LL57 1UT, United Kingdom
| | - J Grote
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | - S S Kim
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | - R R Naik
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | - A D Williams
- Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson AFB, Ohio 45433, United States
| | - C Weiland
- Synchrotron Research, Inc. , Melbourne, Florida 32901, United States
| | - E Principe
- Synchrotron Research, Inc. , Melbourne, Florida 32901, United States
| | - D A Fischer
- National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States
| | - S Banerjee
- Departments of Chemistry and Materials Science and Engineering, Texas A&M University , College Station, Texas 77842-3012, United States
| | - D Prendergast
- The Molecular Foundry, Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - E M Campo
- School of Electronic Engineering, Bangor University , Bangor LL57 1UT, United Kingdom
- Department of Physics and Astronomy, University of Texas at San Antonio , San Antonio, Texas 78249, United States
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Affiliation(s)
- Rajesh R. Naik
- 711th Human Performance Wing, Air Force
Research Laboratory, Wright−Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and
Materials Science and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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Tadepalli S, Wang Z, Slocik J, Naik RR, Singamaneni S. Effect of size and curvature on the enzyme activity of bionanoconjugates. Nanoscale 2017; 9:15666-15672. [PMID: 28993826 DOI: 10.1039/c7nr02434g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Biotic-abiotic hybrids comprised of globular proteins and functional nanostructures with complementary and synergistic properties are central to a number of bionanotechnological applications. A comprehensive understanding of the effect of physicochemical properties of abiotic nanostructures on the biological activity of the bionanoconjugates is critical in the design of these bio-nano hybrids. In this study, using size and curvature-controlled gold nanoparticles as a model abiotic system, we investigated the effect of hydrodynamic diameter and surface curvature on the activity of a model enzyme, horseradish peroxidase (HRP), adsorbed on the surface of the nanostructures. In contrast with the previous studies, we have employed a novel class of gold superstructures (gold nanoparticles on spheres) to deconvolute the effects of size and curvature on the catalytic activity of the bionanoconjugates. This study improves our understanding of the bio/nano interface and the design of bioinorganic hybrids with potential applications in biomimetic and bioenabled sensors, energy harvesting, optoelectronic components and devices, responsive and autonomous materials.
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Affiliation(s)
- Sirimuvva Tadepalli
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St Louis, St Louis, MO 63130, USA.
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Abstract
Through the use of the limited materials palette, optimally designed micro- and nanostructures, and tightly regulated processes, nature demonstrates exquisite control of light-matter interactions at various length scales. In fact, control of light-matter interactions is an important element in the evolutionary arms race and has led to highly engineered optical materials and systems. In this review, we present a detailed summary of various optical effects found in nature with a particular emphasis on the materials and optical design aspects responsible for their optical functionality. Using several representative examples, we discuss various optical phenomena, including absorption and transparency, diffraction, interference, reflection and antireflection, scattering, light harvesting, wave guiding and lensing, camouflage, and bioluminescence, that are responsible for the unique optical properties of materials and structures found in nature and biology. Great strides in understanding the design principles adapted by nature have led to a tremendous progress in realizing biomimetic and bioinspired optical materials and photonic devices. We discuss the various micro- and nanofabrication techniques that have been employed for realizing advanced biomimetic optical structures.
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Affiliation(s)
- Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science and Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | | | | | | | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science and Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
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Slocik JM, Naik RR. Sequenced defined biomolecules for nanomaterial synthesis, functionalization, and assembly. Curr Opin Biotechnol 2017; 46:7-13. [DOI: 10.1016/j.copbio.2016.11.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 11/29/2016] [Accepted: 11/30/2016] [Indexed: 10/20/2022]
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38
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Dickerson MB, Dennis PB, Tondiglia VP, Nadeau LJ, Singh KM, Drummy LF, Partlow BP, Brown DP, Omenetto FG, Kaplan DL, Naik RR. 3D Printing of Regenerated Silk Fibroin and Antibody-Containing Microstructures via Multiphoton Lithography. ACS Biomater Sci Eng 2017; 3:2064-2075. [DOI: 10.1021/acsbiomaterials.7b00338] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Matthew B. Dickerson
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Patrick B. Dennis
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Vincent P. Tondiglia
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Lloyd J. Nadeau
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Kristi M. Singh
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Lawrence F. Drummy
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Benjamin P. Partlow
- Biomedical
Engineering Department, Tufts University, Medford, Massachusetts 02155, United States
| | - Dean P. Brown
- Materials
and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
| | - Fiorenzo G. Omenetto
- Biomedical
Engineering Department, Tufts University, Medford, Massachusetts 02155, United States
| | - David L. Kaplan
- Biomedical
Engineering Department, Tufts University, Medford, Massachusetts 02155, United States
| | - Rajesh R. Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson
AFB, Ohio 45433, United States
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39
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Tadepalli S, Wang Z, Liu KK, Jiang Q, Slocik J, Naik RR, Singamaneni S. Influence of Surface Charge of the Nanostructures on the Biocatalytic Activity. Langmuir 2017; 33:6611-6619. [PMID: 28605903 DOI: 10.1021/acs.langmuir.6b04490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The physicochemical properties of abiotic nanostructures determine the structure and function of biological counterparts in biotic-abiotic nanohybrids. A comprehensive understanding of the interfacial interactions and the predictive capability of their structure and function is paramount for virtually all fields of bionanotechnology. In this study, using plasmonic nanostructures as a model abiotic system, we investigate the effect of the surface charge of nanostructures on the biocatalytic reaction kinetics of a bound enzyme. We found that the surface charge of nanostructures profoundly influences the structure, orientation, and activity of the bound enzyme. Furthermore, the interactions of the enzyme with nanoparticles result in stable conjugates that retain their functionality at elevated temperatures, unlike their free counterparts that lose their secondary structure and biocatalytic activity.
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Affiliation(s)
- Sirimuvva Tadepalli
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Zheyu Wang
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Keng-Ku Liu
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Qisheng Jiang
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Joseph Slocik
- 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Institute of Material Science and Engineering and Department of Mechanical Engineering and Material Science, Washington University in St. Louis , St. Louis, Missouri 63130, United States
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40
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Ramezani-Dakhel H, Bedford NM, Woehl TJ, Knecht MR, Naik RR, Heinz H. Nature of peptide wrapping onto metal nanoparticle catalysts and driving forces for size control. Nanoscale 2017; 9:8401-8409. [PMID: 28604905 DOI: 10.1039/c7nr02813j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Colloidal metal nanocrystals find many applications in catalysis, energy conversion devices, and therapeutics. However, the nature of ligand interactions and implications on shape control have remained uncertain at the atomic scale. Large differences in peptide adsorption strength and facet specificity were found on flat palladium surfaces versus surfaces of nanoparticles of 2 to 3 nm size using accurate atomistic simulations with the Interface force field. Folding of longer peptides across many facets explains the formation of near-spherical particles with local surface disorder, in contrast to the possibility of nanostructures of higher symmetry with shorter ligands. The average particle size in TEM correlates inversely with the surface coverage with a given ligand and with the strength of ligand adsorption. The role of specific amino acids and sequence mutations on the nanoparticle size and facet composition is discussed, as well as the origin of local surface disorder that leads to large differences in catalytic reactivity.
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41
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Singla S, Anim-Danso E, Islam AE, Ngo Y, Kim SS, Naik RR, Dhinojwala A. Insight on Structure of Water and Ice Next to Graphene Using Surface-Sensitive Spectroscopy. ACS Nano 2017; 11:4899-4906. [PMID: 28448717 DOI: 10.1021/acsnano.7b01499] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The water/graphene interface has received considerable attention in the past decade due to its relevance in various potential applications including energy storage, sensing, desalination, and catalysis. Most of our knowledge about the interfacial water structure next to graphene stems from simulations, which use experimentally measured water contact angles (WCAs) on graphene (or graphite) to estimate the water-graphene interaction strength. However, the existence of a wide spectrum of reported WCAs on supported graphene and graphitic surfaces makes it difficult to interpret the water-graphene interactions. Here, we have used surface-sensitive infrared-visible sum frequency generation (SFG) spectroscopy to probe the interfacial water structure next to graphene supported on a sapphire substrate. In addition, the ice nucleation properties of graphene have been explored by performing in situ freezing experiments as graphitic surfaces are considered good ice nucleators. For graphene supported on sapphire, we observed a strong SFG peak associated with highly coordinated, ordered water next to graphene. Similar ordering was not detected next to bare sapphire, implying that the observed ordering of water molecules in the former case is a consequence of the presence of graphene. Our analysis indicates that graphene behaves like a hydrophobic (or negatively charged) surface, leading to enhanced ordering of water molecules. Although liquid water orders next to graphene, the ice formed is proton disordered. This research sheds light on water-graphene interactions relevant in optimizing the performance of graphene in various applications.
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Affiliation(s)
- Saranshu Singla
- Department of Polymer Science, The University of Akron , Akron, Ohio 44325-3909, United States
| | - Emmanuel Anim-Danso
- Department of Polymer Science, The University of Akron , Akron, Ohio 44325-3909, United States
- Solvay Speciality Polymers , 4500 McGinnis Ferry Road, Alpharetta, Georgia 30005, United States
| | | | | | | | | | - Ali Dhinojwala
- Department of Polymer Science, The University of Akron , Akron, Ohio 44325-3909, United States
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42
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Slocik JM, McKenzie R, Dennis PB, Naik RR. Creation of energetic biothermite inks using ferritin liquid protein. Nat Commun 2017; 8:15156. [PMID: 28447665 PMCID: PMC5414172 DOI: 10.1038/ncomms15156] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 03/03/2017] [Indexed: 12/13/2022] Open
Abstract
Energetic liquids function mainly as fuels due to low energy densities and slow combustion kinetics. Consequently, these properties can be significantly increased through the addition of metal nanomaterials such as aluminium. Unfortunately, nanoparticle additives are restricted to low mass fractions in liquids because of increased viscosities and severe particle agglomeration. Nanoscale protein ionic liquids represent multifunctional solvent systems that are well suited to overcoming low mass fractions of nanoparticles, producing stable nanoparticle dispersions and simultaneously offering a source of oxidizing agents for combustion of reactive nanomaterials. Here, we use iron oxide-loaded ferritin proteins to create a stable and highly energetic liquid composed of aluminium nanoparticles and ferritin proteins for printing and forming 3D shapes and structures. In total, this bioenergetic liquid exhibits increased energy output and performance, enhanced dispersion and oxidation stability, lower activation temperatures, and greater processability and functionality.
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Affiliation(s)
- Joseph M Slocik
- Materials and Manufacturing Directorate, Air Force Research Lab, Wright-Patterson AFB, Ohio 45433, USA
| | - Ruel McKenzie
- Materials and Manufacturing Directorate, Air Force Research Lab, Wright-Patterson AFB, Ohio 45433, USA
| | - Patrick B Dennis
- Materials and Manufacturing Directorate, Air Force Research Lab, Wright-Patterson AFB, Ohio 45433, USA
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Lab, Wright-Patterson AFB, Ohio 45433, USA
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43
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Liu KK, Jiang Q, Tadepalli S, Raliya R, Biswas P, Naik RR, Singamaneni S. Wood-Graphene Oxide Composite for Highly Efficient Solar Steam Generation and Desalination. ACS Appl Mater Interfaces 2017; 9:7675-7681. [PMID: 28151641 DOI: 10.1021/acsami.7b01307] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Solar steam generation is a highly promising technology for harvesting solar energy, desalination and water purification. We introduce a novel bilayered structure composed of wood and graphene oxide (GO) for highly efficient solar steam generation. The GO layer deposited on the microporous wood provides broad optical absorption and high photothermal conversion resulting in rapid increase in the temperature at the liquid surface. On the other hand, wood serves as a thermal insulator to confine the photothermal heat to the evaporative surface and to facilitate the efficient transport of water from the bulk to the photothermally active space. Owing to the tailored bilayer structure and the optimal thermo-optical properties of the individual components, the wood-GO composite structure exhibited a solar thermal efficiency of ∼83% under simulated solar excitation at a power density of 12 kW/m2. The novel composite structure demonstrated here is highly scalable and cost-efficient, making it an attractive material for various applications involving large light absorption, photothermal conversion and heat localization.
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Affiliation(s)
- Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Qisheng Jiang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Ramesh Raliya
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Pratim Biswas
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Rajesh R Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base , Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis , St. Louis, Missouri 63130, United States
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44
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Chou CC, Martin-Martinez FJ, Qin Z, Dennis PB, Gupta MK, Naik RR, Buehler MJ. Ion Effect and Metal-Coordinated Cross-Linking for Multiscale Design of Nereis Jaw Inspired Mechanomutable Materials. ACS Nano 2017; 11:1858-1868. [PMID: 28165707 DOI: 10.1021/acsnano.6b07878] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 06/06/2023]
Abstract
The Nvjp-1 protein is a key component in the jaws of Nereis virens, a species of marine worm. It contains over 25 mol % of histidine, which is believed to play a key role in the metal-coordinated cross-linking responsible for the structural stability and exceptional mechanical performance of the worm jaw. Understanding the nanoscale mechanism behind this cross-linking and its pathway in affecting the macroscopic mechanical behavior of the material is crucial to develop bioinspired mechanomutable materials based on Nvjp-1. Here, we use a combination of multiscale modeling and experimental synthesis to understand the behavior of this heterologous-expressed protein from the nano- to the macroscale. We have built a bottom-up molecular-based model, which includes electronic-based density functional theory calculations, atomistic simulation of the nanoscale properties with replica exchange molecular dynamics, and an elastic network model for describing the macroscale behavior at different pHs. This multiscale modeling supports the experimental synthesis of a photo-cross-linked Nvjp-1 hydrogel by proving both the nanoscale mechanisms and mechanical behavior predictions. Our theoretical results agree well with the experimental observations, showing that Nvjp-1 forms a more compact structure in the presence of Zn2+ ions with a suitable pH environment, leading to the formation of more stable intramolecular metal-coordinated cross-links. These metal-coordinated cross-links induce nanoscale aggregation of Nvjp-1, which is responsible for the hydrogel contraction observed in experiments and predicted by the model.
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Affiliation(s)
- Chia-Ching Chou
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Francisco J Martin-Martinez
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Zhao Qin
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Patrick B Dennis
- Air Force Research Laboratory, Materials and Manufacturing Directorate , Wright-Patterson AFB, Ohio 45433, United States
| | - Maneesh K Gupta
- Air Force Research Laboratory, Materials and Manufacturing Directorate , Wright-Patterson AFB, Ohio 45433, United States
| | - Rajesh R Naik
- Air Force Research Laboratory, Materials and Manufacturing Directorate , Wright-Patterson AFB, Ohio 45433, United States
| | - Markus J Buehler
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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45
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Wang C, Tadepalli S, Luan J, Liu KK, Morrissey JJ, Kharasch ED, Naik RR, Singamaneni S. Metal-Organic Framework as a Protective Coating for Biodiagnostic Chips. Adv Mater 2017; 29:10.1002/adma.201604433. [PMID: 27925296 PMCID: PMC5369648 DOI: 10.1002/adma.201604433] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/04/2016] [Indexed: 05/22/2023]
Abstract
Zeolitic imidazolate framework-8 (ZIF-8) grown around antibodies anchored to plasmonic nanostructures serves as a protective layer to preserve the biorecognition ability of antibodies stored at room and elevated temperatures for several days. The biofunctionality of the ZIF-8-protected biochip can be restored by a simple water-rinsing step, making it highly convenient for use in point-of-care and resource-limited settings.
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Affiliation(s)
- Congzhou Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jeremiah J Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, MO, 63110, USA
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Evan D Kharasch
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, MO, 63110, USA
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, MO, 63110, USA
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Rajesh R Naik
- 711th Human Performance Wing, Wright-Patterson, Air Force Base, Dayton, OH, 45433, USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
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46
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Jiang Q, Tian L, Liu KK, Tadepalli S, Raliya R, Biswas P, Naik RR, Singamaneni S. Bilayered Biofoam for Highly Efficient Solar Steam Generation. Adv Mater 2016; 28:9400-9407. [PMID: 27432591 DOI: 10.1002/adma.201601819] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/02/2016] [Indexed: 06/06/2023]
Abstract
A novel bilayered hybrid biofoam composed of a bacterial nanocellulose (BNC) layer and a reduced graphene oxide (RGO)-filled BNC layer is introduced for highly efficient solar steam generation. The biofoam exhibits a solar thermal efficiency of ≈83% under simulated solar illumination (10 kW m-2 ). The fabrication method introduced here is highly scalable and cost-efficient.
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Affiliation(s)
- Qisheng Jiang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Limei Tian
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Ramesh Raliya
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Pratim Biswas
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Rajesh R Naik
- 711 Human Performance Wing, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, 45433, USA
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, Saint Louis, MO, 63130, USA
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47
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Wang C, Luan J, Tadepalli S, Liu KK, Morrissey JJ, Kharasch ED, Naik RR, Singamaneni S. Silk-Encapsulated Plasmonic Biochips with Enhanced Thermal Stability. ACS Appl Mater Interfaces 2016; 8:26493-26500. [PMID: 27438127 PMCID: PMC5371827 DOI: 10.1021/acsami.6b07362] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Because of their high sensitivity, cost-efficiency, and great potential as point-of-care biodiagnostic devices, plasmonic biosensors based on localized surface plasmon resonance have gained immense attention. However, most plasmonic biosensors and conventional bioassays rely on natural antibodies, which are susceptible to elevated temperatures and nonaqueous media. Hence, an expensive and cumbersome "cold chain" system is necessary to preserve the labile antibodies by maintaining optimal cold temperatures during transport, storage, and handling. Herein, we introduce a facile approach to preserve the antibody activity on a biosensor surface even at elevated temperatures. We show that silk fibroin film could be used as a protective layer to preserve the activity of a model antibody (Rabbit IgG) and cardiac troponin antibody at both room temperature and 40 °C over several days. Furthermore, a simple aqueous rinsing process restores the biofunctionality of the biosensor. This energy-efficient and environmentally friendly method represents a novel approach to eliminate the cold chain and temperature-controlled packing of diagnostic reagents and materials, thereby extending the capability of antibody-based biosensors to different resource-limited circumstances such as developing countries, an ambulance, an intensive care unit emergency room, and battlefield.
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Affiliation(s)
- Congzhou Wang
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Jingyi Luan
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Sirimuvva Tadepalli
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Keng-Ku Liu
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Jeremiah J. Morrissey
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, Missouri 63110, United States
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, Missouri 63110, United States
| | - Evan D. Kharasch
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, Missouri 63110, United States
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, Missouri 63110, United States
- Siteman Cancer Center, Washington University in St. Louis, St. Louis, Missouri 63110, United States
- The Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Rajesh R. Naik
- 711th Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
- Department of Biochemistry and Molecular Biophysics, Washington University in St. Louis, St. Louis, Missouri 63110, United States
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48
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Sereda V, Ralbovsky NM, Vasudev MC, Naik RR, Lednev IK. Polarized Raman Spectroscopy for Determining the Orientation of di-D-phenylalanine Molecules in a Nanotube. J Raman Spectrosc 2016; 47:1056-1062. [PMID: 27795612 PMCID: PMC5079532 DOI: 10.1002/jrs.4884] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Self-assembly of short peptides into nanostructures has become an important strategy for the bottom-up fabrication of nanomaterials. Significant interest to such peptide-based building blocks is due to the opportunity to control the structure and properties of well-structured nanotubes, nanofibrils, and hydrogels. X-ray crystallography and solution NMR, two major tools of structural biology, have significant limitations when applied to peptide nanotubes because of their non-crystalline structure and large weight. Polarized Raman spectroscopy was utilized for structural characterization of well-aligned D-Diphenylalanine nanotubes. The orientation of selected chemical groups relative to the main axis of the nanotube was determined. Specifically, the C-N bond of CNH3+groups is oriented parallel to the nanotube axis, the peptides' carbonyl groups are tilted at approximately 54° from the axis and the COO- groups run perpendicular to the axis. The determined orientation of chemical groups allowed the understanding of the orientation of D-diphenylalanine molecule that is consistent with its equilibrium conformation. The obtained data indicate that there is only one orientation of D-diphenylalanine molecules with respect to the nanotube main axis.
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Affiliation(s)
- Valentin Sereda
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Nicole M. Ralbovsky
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, United States
| | - Milana C. Vasudev
- Department of Bioengineering, University of Massachusetts Dartmouth, 285 Old Westport Road, Dartmouth MA 02747, United States
| | - Rajesh R. Naik
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Igor K. Lednev
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Avenue, Albany, NY 12222, United States
- Corresponding author: , Phone: (518) 591 8863, Fax: (518) 442-3462
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Slocik JM, Kuang Z, Knecht MR, Naik RR. Optical Modulation of Azobenzene-Modified Peptide for Gold Surface Binding. Chemphyschem 2016; 17:3252-3259. [PMID: 27526644 DOI: 10.1002/cphc.201600670] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 06/21/2016] [Indexed: 11/08/2022]
Abstract
The ability to precisely and remotely modulate reversible binding interactions between biomolecules and abiotic surfaces is appealing for many applications. To achieve this level of control, an azobenzene-based optical switch is added to nanoparticle-binding peptides in order to switch peptide conformation and attenuate binding affinity to gold surfaces via binding and dissociation of peptides.
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Affiliation(s)
- Joseph M Slocik
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, 45433, USA
| | - Zhifeng Kuang
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH, 45433, USA
| | - Marc R Knecht
- Department of Chemistry, Miami University, Miami, FL, 33146, USA
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Laboratory, Dayton, OH, 45433, USA.
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Tadepalli S, Hamper H, Park SH, Cao S, Naik RR, Singamaneni S. Adsorption Behavior of Silk Fibroin on Amphiphilic Graphene Oxide. ACS Biomater Sci Eng 2016; 2:1084-1092. [DOI: 10.1021/acsbiomaterials.6b00232] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sirimuvva Tadepalli
- Department
of Mechanical Engineering and Materials Science and Institute of Materials
Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Henry Hamper
- Department
of Mechanical Engineering and Materials Science and Institute of Materials
Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Sang Hyun Park
- Department
of Mechanical Engineering and Materials Science and Institute of Materials
Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Sisi Cao
- Department
of Mechanical Engineering and Materials Science and Institute of Materials
Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Rajesh R. Naik
- 711
Human Performance Wing, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Srikanth Singamaneni
- Department
of Mechanical Engineering and Materials Science and Institute of Materials
Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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