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Ghazizadeh E, Moosavifard SE, Daneshmand N, Kaverlavani SK. Impediometric Electrochemical Sensor Based on The Inspiration of Carnation Italian Ringspot Virus Structure to Detect an Attommolar of miR. Sci Rep 2020; 10:9645. [PMID: 32541792 PMCID: PMC7295965 DOI: 10.1038/s41598-020-66393-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/19/2020] [Indexed: 01/17/2023] Open
Abstract
Electrochemical sensors are the tools to detect the accurate and sensitive miRs. There is the challenge to increase the power and sensitivity of the surface for the electrochemical sensor. We design a virus-like hallow structure of cuco2o4 that it holds the large amounts of p19 protein by mimicking of inherent virus (Carnation italian ringspot virus) to detect 21mir with the limit of detection (LOD = 1aM). The electrochemical measurements are performed between the potentials at -0.3 V and +0.3 V with 1 mM [Fe(CN)6] -3/-4. After dropping the cuco2o4 on the SCPE (screen carbon printed electrode), the sensor is turned on due to the high electrochemical properties. Then, p19 proteins move into the hallow structure and inhibit the exchange of electrochemical reactions between the shells and the sensor is turned off. Then, adding the duplexes of RNA/miRs cause to increase the electrochemical property of p19 due to the change of p19 conformation and the system is turned on, again. So, for the first time, a virus-like hallow structure has been used to detect the 21miR in the human serum, MCF-7, Hella cells, with high sensitivity, specificity, and reproducibility in few minutes.
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Affiliation(s)
- E Ghazizadeh
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyyed Ebrahim Moosavifard
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, 74148-46199, Iran.
- Research Center for Noncommunicable Diseases, School of Medicine, Jahrom University of Medical Sciences, Jahrom, 74148-46199, Iran.
| | - Negin Daneshmand
- Department of Materials Science and Engineering, Shiraz university, Shiraz, Iran
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Ghosh S, Chang YF, Yang DM, Chattopadhyay S. Upconversion nanoparticle-mOrange protein FRET nanoprobes for self-ratiometric/ratiometric determination of intracellular pH, and single cell pH imaging. Biosens Bioelectron 2020; 155:112115. [DOI: 10.1016/j.bios.2020.112115] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/05/2020] [Accepted: 02/19/2020] [Indexed: 12/16/2022]
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Yadav VK, Khan SH, Malik P, Thappa A, Suriyaprabha R, Ravi RK, Choudhary N, Kalasariya H, Gnanamoorthy G. Microbial Synthesis of Nanoparticles and Their Applications for Wastewater Treatment. ENVIRONMENTAL AND MICROBIAL BIOTECHNOLOGY 2020. [DOI: 10.1007/978-981-15-2817-0_7] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Cristie-David AS, Chen J, Nowak DB, Bondy AL, Sun K, Park SI, Banaszak Holl MM, Su M, Marsh ENG. Coiled-Coil-Mediated Assembly of an Icosahedral Protein Cage with Extremely High Thermal and Chemical Stability. J Am Chem Soc 2019; 141:9207-9216. [PMID: 31117640 DOI: 10.1021/jacs.8b13604] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The organization of protein molecules into higher-order nanoscale architectures is ubiquitous in Nature and represents an important goal in synthetic biology. Furthermore, the stabilization of enzyme activity has many practical applications in biotechnology and medicine. Here we describe the symmetry-directed design of an extremely stable, enzymatically active, hollow protein cage of Mr ≈ 2.1 MDa with dimensions similar to those of a small icosahedral virus. The cage was constructed based on icosahedral symmetry by genetically fusing a trimeric protein (TriEst) to a small pentameric de novo-designed coiled coil domain, separated by a flexible oligo-glycine linker sequence. Screening a small library of designs in which the linker length varied from 2 to 12 residues identified a construct containing 8 glycine residues (Ico8) that formed well-defined cages. Characterization by dynamic light scattering, negative stain, and cryo-EM and by atomic force and IR-photoinduced force microscopy established that Ico8 assembles into a flexible hollow cage comprising 20 copies of the esterase trimer, 60 protein subunits in total, with overall icosahedral geometry. Notably, the cages formed by Ico8 proved to be extremely stable toward thermal and chemical denaturation: whereas TriEst was unfolded by heating ( Tm ≈ 75 °C) or denatured by 1.5 M guanidine hydrochloride, the Ico8 cages remained folded even at 120 °C or in 8 M guanidine hydrochloride. The increased stability of the cages is a new property that emerges from the higher-order structure of the protein cage, rather than being intrinsic to the components from which it is constructed.
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Affiliation(s)
- Ajitha S Cristie-David
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Junjie Chen
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Derek B Nowak
- Molecular Vista Inc , Via Del Oro Suite 110 , San Jose , California 95119 , United States
| | - Amy L Bondy
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Kai Sun
- Michigan Center for Materials Characterization , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Sung I Park
- Molecular Vista Inc , Via Del Oro Suite 110 , San Jose , California 95119 , United States
| | - Mark M Banaszak Holl
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Min Su
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - E Neil G Marsh
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States.,Department of Biological Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
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