1
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Grostete M, Lee J, Msibi Z, Boissel F, Jimenez M, Jeantet R, Lanotte L. Exploring the formation of surficial whey protein deposits under shear stress by rheofluidic approach. Int J Biol Macromol 2024; 274:133291. [PMID: 38908625 DOI: 10.1016/j.ijbiomac.2024.133291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Understanding how shear affects whey protein stability is crucial to deal with typical industrial issues occurring at the bulk solution/surface interface, such as fouling during heat treatments. However, at the state of the art, this effect remains unclear, contrary to that of temperature. This article presents a novel strategy to study the impact of shear rate and concentration on the accumulation of whey protein surficial deposits. It consists in applying a range of shear rates (0-200 s-1) at controlled temperature (65 °C) on whey protein solutions (5-10 wt%) by a parallel plate rheometer equipped with a glass disc, thus allowing the off-line characterization of the deposits by microscopy. Our results highlight an unequivocal effect of increasing shear stress. At 5 wt%, it fosters the formation of primary deposits (≈ 10 μm), whereas at 10 wt% it results in the development of complex branched structures (≈ 50 μm) especially for shear rates ranging from 140 s-1 to 200 s-1. Based on the classification by size of the observed populations, we discuss possible hypotheses for the deposit growth kinetics, involving the interplay of different physico-chemical protein-surface interactions and paving the way to future further investigations.
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Affiliation(s)
| | - Jeehyun Lee
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
| | - Zanele Msibi
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
| | | | - Maude Jimenez
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France; Institut Universitaire de, France, (IUF), 1 rue Descartes, 75231 Paris cedex.
| | | | - Luca Lanotte
- INRAE, Institut Agro, STLO, 35042 Rennes, France.
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2
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Altangerel N, Neuman BW, Hemmer PR, Yakovlev VV, Sokolov AV, Scully MO. A Novel Non-Destructive Rapid Tool for Estimating Amino Acid Composition and Secondary Structures of Proteins in Solution. SMALL METHODS 2024; 8:e2301191. [PMID: 38485686 PMCID: PMC11260246 DOI: 10.1002/smtd.202301191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 02/14/2024] [Indexed: 05/04/2024]
Abstract
Amino-acid protein composition plays an important role in biology, medicine, and nutrition. Here, a groundbreaking protein analysis technique that quickly estimates amino acid composition and secondary structure across various protein sizes, while maintaining their natural states is introduced and validated. This method combines multivariate statistics and the thermostable Raman interaction profiling (TRIP) technique, eliminating the need for complex preparations. In order to validate the approach, the Raman spectra are constructed of seven proteins of varying sizes by utilizing their amino acid frequencies and the Raman spectra of individual amino acids. These constructed spectra exhibit a close resemblance to the actual measured Raman spectra. Specific vibrational modes tied to free amino and carboxyl termini of the amino acids disappear as signals linked to secondary structures emerged under TRIP conditions. Furthermore, the technique is used inversely to successfully estimate amino acid compositions and secondary structures of unknown proteins across a range of sizes, achieving impressive accuracy ranging between 1.47% and 5.77% of root mean square errors (RMSE). These results extend the uses for TRIP beyond interaction profiling, to probe amino acid composition and structure.
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Affiliation(s)
| | | | | | | | | | - Marlan O Scully
- Texas A&M University, College Station, TX, 77843, USA
- Baylor University, Waco, TX, 76798, USA
- Princeton University, Princeton, NJ, 08544, USA
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3
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Zheng P, Raj P, Liang L, Wu L, Paidi SK, Kim JH, Barman I. Label-free plasmonic spectral profiling of serum DNA. Biosens Bioelectron 2024; 254:116199. [PMID: 38492362 PMCID: PMC11056035 DOI: 10.1016/j.bios.2024.116199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/07/2024] [Accepted: 03/07/2024] [Indexed: 03/18/2024]
Abstract
Genetic and epigenetic modifications are linked to the activation of oncogenes and inactivation of tumor suppressor genes. Likewise, the associated molecular alternations can best inform precision medicine for personalized tumor treatment. Therefore, performing characterization of genetic and epigenetic alternations at the molecular level represents a crucial step in early diagnosis and/or therapeutics of cancer. However, the prevailing methods for DNA analysis involve a series of tedious and complicated steps, in which important genetic and epigenetic information could be lost or altered. To provide a potential approach for non-invasive, direct, and efficient DNA analysis, herein, we present a promising strategy for label-free molecular profiling of serum DNA in its pristine form by fusing surface-enhanced Raman spectroscopy with machine learning on a superior plasmonic nanostructured platform. Using DNA methylation and single-point mutation as two case studies, the presented strategy allows a well-balanced sensitive and specific detection of epigenetic and genetic changes at the single-nucleotide level in serum. We envision the presented label-free strategy could serve as a versatile tool for direct molecular profiling in pristine forms of a wide range of biological markers and aid biomedical diagnostics as well as therapeutics.
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Affiliation(s)
- Peng Zheng
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Piyush Raj
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Le Liang
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States; The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China; Department of Ophthalmology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
| | - Lintong Wu
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Santosh Kumar Paidi
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Jeong Hee Kim
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States
| | - Ishan Barman
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, United States; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, United States; The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, United States.
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4
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Somee LR, Barati A, Shahsavani MB, Hoshino M, Hong J, Kumar A, Moosavi-Movahedi AA, Amanlou M, Yousefi R. Understanding the structural and functional changes and biochemical pathomechanism of the cardiomyopathy-associated p.R123W mutation in human αB-crystallin. Biochim Biophys Acta Gen Subj 2024; 1868:130579. [PMID: 38307443 DOI: 10.1016/j.bbagen.2024.130579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
αB-crystallin, a member of the small heat shock protein (sHSP) family, is expressed in diverse tissues, including the eyes, brain, muscles, and heart. This protein plays a crucial role in maintaining eye lens transparency and exhibits holdase chaperone and anti-apoptotic activities. Therefore, structural and functional changes caused by genetic mutations in this protein may contribute to the development of disorders like cataract and cardiomyopathy. Recently, the substitution of arginine 123 with tryptophan (p.R123W mutation) in human αB-crystallin has been reported to trigger cardiomyopathy. In this study, human αB-crystallin was expressed in Escherichia coli (E. coli), and the missense mutation p.R123W was created using site-directed mutagenesis. Following purification via anion exchange chromatography, the structural and functional properties of both proteins were investigated and compared using a wide range of spectroscopic and microscopic methods. The p.R123W mutation induced significant alterations in the secondary, tertiary, and quaternary structures of human αB-crystallin. This pathogenic mutation resulted in an increased β-sheet structure and formation of protein oligomers with larger sizes compared to the wild-type protein. The mutant protein also exhibited reduced chaperone activity and lower thermal stability. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) demonstrated that the p.R123W mutant protein is more prone to forming amyloid aggregates. The structural and functional changes observed in the p.R123W mutant protein, along with its increased propensity for aggregation, could impact its proper functional interaction with the target proteins in the cardiac muscle, such as calcineurin. Our results provide an explanation for the pathogenic intervention of p.R123W mutant protein in the occurrence of hypertrophic cardiomyopathy (HCM).
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Affiliation(s)
- Leila Rezaei Somee
- Protein Chemistry Laboratory (PCL), Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Anis Barati
- Protein Chemistry Laboratory (PCL), Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | | | - Masaru Hoshino
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Jun Hong
- School of Life Sciences, Henan University, Kaifen, People's Republic of China
| | - Ashutosh Kumar
- Department of Biosciences and Bioengineering, IIT Bombay, Powai, Mumbai, India
| | | | - Massoud Amanlou
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran.
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5
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Smets B, Boschker HTS, Wetherington MT, Lelong G, Hidalgo-Martinez S, Polerecky L, Nuyts G, De Wael K, Meysman FJR. Multi-wavelength Raman microscopy of nickel-based electron transport in cable bacteria. Front Microbiol 2024; 15:1208033. [PMID: 38525072 PMCID: PMC10959288 DOI: 10.3389/fmicb.2024.1208033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 02/26/2024] [Indexed: 03/26/2024] Open
Abstract
Cable bacteria embed a network of conductive protein fibers in their cell envelope that efficiently guides electron transport over distances spanning up to several centimeters. This form of long-distance electron transport is unique in biology and is mediated by a metalloprotein with a sulfur-coordinated nickel (Ni) cofactor. However, the molecular structure of this cofactor remains presently unknown. Here, we applied multi-wavelength Raman microscopy to identify cell compounds linked to the unique cable bacterium physiology, combined with stable isotope labeling, and orientation-dependent and ultralow-frequency Raman microscopy to gain insight into the structure and organization of this novel Ni-cofactor. Raman spectra of native cable bacterium filaments reveal vibrational modes originating from cytochromes, polyphosphate granules, proteins, as well as the Ni-cofactor. After selective extraction of the conductive fiber network from the cell envelope, the Raman spectrum becomes simpler, and primarily retains vibrational modes associated with the Ni-cofactor. These Ni-cofactor modes exhibit intense Raman scattering as well as a strong orientation-dependent response. The signal intensity is particularly elevated when the polarization of incident laser light is parallel to the direction of the conductive fibers. This orientation dependence allows to selectively identify the modes that are associated with the Ni-cofactor. We identified 13 such modes, some of which display strong Raman signals across the entire range of applied wavelengths (405-1,064 nm). Assignment of vibrational modes, supported by stable isotope labeling, suggest that the structure of the Ni-cofactor shares a resemblance with that of nickel bis(1,2-dithiolene) complexes. Overall, our results indicate that cable bacteria have evolved a unique cofactor structure that does not resemble any of the known Ni-cofactors in biology.
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Affiliation(s)
- Bent Smets
- Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Henricus T. S. Boschker
- Department of Biology, University of Antwerp, Antwerp, Belgium
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Maxwell T. Wetherington
- Materials Characterization Laboratory, Pennsylvania State University, State College, PA, United States
| | - Gérald Lelong
- Institut de Minéralogie, de Physique des Matériaux et Cosmochimie (IMPMC), Sorbonne Universités, France—Muséum National d’Histoire Naturelle, Paris, France
| | | | - Lubos Polerecky
- Department of Earth Sciences, Utrecht University, Utrecht, Netherlands
| | - Gert Nuyts
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
- Department of Physics, University of Antwerp, Antwerp, Belgium
| | - Karolien De Wael
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Filip J. R. Meysman
- Department of Biology, University of Antwerp, Antwerp, Belgium
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
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6
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Tahir F, Kamran A, Majeed MI, Alghamdi AA, Javed MR, Nawaz H, Iqbal MA, Tahir M, Tariq A, Rashid N, Shahid U, Hassan A, Shoukat US. Surface-Enhanced Raman Scattering (SERS) in Combination with PCA and PLS-DA for the Evaluation of Antibacterial Activity of 1-Isopentyl-3-pentyl-1 H-imidazole-3-ium Bromide against Bacillus subtilis. ACS OMEGA 2024; 9:6861-6872. [PMID: 38371792 PMCID: PMC10870359 DOI: 10.1021/acsomega.3c08196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/05/2024] [Accepted: 01/16/2024] [Indexed: 02/20/2024]
Abstract
In the current study, surface-enhanced Raman scattering (SERS) was performed to evaluate the antibacterial activity of lab-synthesized drug (1-isopentyl-3-pentyl-1H-imidazole-3-ium bromide salt) and commercial drug tinidazole againstBacillus subtilis. The changes in SERS spectral features were studied for unexposed bacillus and exposed one with various dosages of drug synthesized in the lab (1-isopentyl-3-pentyl-1H-imidazole-3-ium bromide salt), and SERS bands were assigned associated with the drug-induced biochemical alterations in bacteria. Multivariate data analysis tools including principal component analysis (PCA) and partial least-squares discriminant analysis (PLS-DA) have been utilized to analyze the antibacterial activity of the imidazole derivative (lab drug). PCA was employed in differentiating all the SERS spectral data sets associated with the various doses of the lab-synthesized drug. There is clear discrimination among the spectral data sets of a bacterial strain treated with different concentrations of the drug, which are analyzed by PLS-DA with 86% area under the curve in receiver operating curve (ROC), 99% sensitivity, 100% accuracy, and 98% specificity. Various dominant spectral features are observed with a gradual increase in the different concentrations of the applied drug including 715, 850, 1002, 1132, 1237, 1396, 1416, and 1453 cm-1, which indicate the possible biochemical changes caused in bacteria during the antibacterial activity of the lab-synthesized drug. Overall, the findings show that imidazole and imidazolium compounds generated from tinidazole with various alkyl lengths in the amide substitution can be effective antibacterial agents with low cytotoxicity in humans, and these results indicate the efficiency of SERS in pharmaceuticals and biomedical applications.
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Affiliation(s)
- Fatima Tahir
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Ali Kamran
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Irfan Majeed
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Abeer Ahmed Alghamdi
- Department
of Physics, College of Science, Princess
Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Muhammad Rizwan Javed
- Department
of Bioinformatics and Biotechnology, Government
College University Faisalabad (GCUF), Faisalabad 38000, Pakistan
| | - Haq Nawaz
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Adnan Iqbal
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Tahir
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Anam Tariq
- Department
of Biochemistry, Government College University
Faisalabad (GCUF), Faisalabad 38000, Pakistan
| | - Nosheen Rashid
- Department
of Chemistry, University of Education, Faisalabad
Campus, Faisalabad 38000, Pakistan
| | - Urwa Shahid
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Ahmad Hassan
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
| | - Umar Sohail Shoukat
- Department
of Chemistry, University of Agriculture
Faisalabad, Faisalabad 38000, Pakistan
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7
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Wasko J, Wolszczak M, Zajaczkowska Z, Dudek M, Kolesinska B. Human serum albumin as a potential drug delivery system for N-methylated hot spot insulin analogs inhibiting hormone aggregation. Bioorg Chem 2024; 143:107104. [PMID: 38194903 DOI: 10.1016/j.bioorg.2024.107104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/20/2023] [Accepted: 01/03/2024] [Indexed: 01/11/2024]
Abstract
The purpose of this study was to investigate whether Human Serum Albumin (HSA) can bind N-methylated analogs of hot spots of native insulin. Three N-methylated derivatives of the A13-A19 fragment of native insulin were used: L(N-Me)YQLENY (1), LYQ(N-Me)LENY (2), and L(N-Me)YQ(N-Me)LENY (3). The studied N-methylated insulin fragments possess inhibiting potential against hormone aggregation. A variety of research techniques, including spectroscopic methods and microscopy assays, were used to study the interaction of HSA with the N-methylated insulin fragments. Based on spectroscopic measurements with Congo Red and Thioflavin T, all the analyzed N-methylated peptides were able to interact with the HSA surface. The CD spectrum registered for HSA in the presence of L(N-Me)YQLENY showed the smallest content of α-helix conformation, indicating the most compact HSA structure. Based on the results of MST, the dissociation constants (Kd) for complexes of HSA and peptides 1-3 were 19.2 nM (complex 1), 15.6 nM (complex 2), and 8.07 nM (complex 3). Microscopy assays, dynamic light scattering measurements as well as computer simulation of protein-ligand interaction also confirmed the possibility of docking the N-methylated inhibitors within HSA.
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Affiliation(s)
- Joanna Wasko
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, Poland.
| | - Marian Wolszczak
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Wroblewskiego 15, Poland.
| | - Zuzanna Zajaczkowska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, Poland.
| | - Mariusz Dudek
- Institute of Materials Science and Engineering, The Faculty of Mechanical Engineering, Lodz University of Technology, Stefanowskiego 1/15, Poland.
| | - Beata Kolesinska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, Poland.
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8
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Machleid R, Hoehse M, Scholze S, Mazarakis K, Nilsson D, Johansson E, Zehe C, Trygg J, Grimm C, Surowiec I. Feasibility and performance of cross-clone Raman calibration models in CHO cultivation. Biotechnol J 2024; 19:e2300289. [PMID: 38015079 DOI: 10.1002/biot.202300289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/30/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
Raman spectroscopy is widely used in monitoring and controlling cell cultivations for biopharmaceutical drug manufacturing. However, its implementation for culture monitoring in the cell line development stage has received little attention. Therefore, the impact of clonal differences, such as productivity and growth, on the prediction accuracy and transferability of Raman calibration models is not yet well described. Raman OPLS models were developed for predicting titer, glucose and lactate using eleven CHO clones from a single cell line. These clones exhibited diverse productivity and growth rates. The calibration models were evaluated for clone-related biases using clone-wise linear regression analysis on cross validated predictions. The results revealed that clonal differences did not affect the prediction of glucose and lactate, but titer models showed a significant clone-related bias, which remained even after applying variable selection methods. The bias was associated with clonal productivity and lead to increased prediction errors when titer models were transferred to cultivations with productivity levels outside the range of their training data. The findings demonstrate the feasibility of Raman-based monitoring of glucose and lactate in cell line development with high accuracy. However, accurate titer prediction requires careful consideration of clonal characteristics during model development.
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Affiliation(s)
- Rafael Machleid
- Sartorius Stedim Biotech GmbH, Göttingen, Germany
- Computational Life Science Cluster (CLiC), Umeå University, Umeå, Sweden
| | - Marek Hoehse
- Sartorius Stedim Biotech GmbH, Göttingen, Germany
| | | | | | - David Nilsson
- Computational Life Science Cluster (CLiC), Umeå University, Umeå, Sweden
| | | | | | - Johan Trygg
- Computational Life Science Cluster (CLiC), Umeå University, Umeå, Sweden
- Sartorius Corporate Research, Umeå, Sweden
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9
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Younas S, Riaz A, Nawaz H, Majeed MI, Iqbal MA, Rashid N, Altaf A, Shoukat US, Jamil F, Sehar A, Munir S, Javed M, Imran M. Characterization of three different benzimidazolium ligands and their organo-selenium complexes by using density functional theory and Raman spectroscopy. RSC Adv 2023; 13:35292-35304. [PMID: 38053679 PMCID: PMC10694827 DOI: 10.1039/d3ra04931k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/23/2023] [Indexed: 12/07/2023] Open
Abstract
In the present study, Raman spectroscopy (RS) along with density functional theory (DFT) calculations have been performed for the successful characterization and confirmation of the formation of three different selenium-based N-heterocyclic carbene (NHC) complexes from their respective salts. For this purpose, mean RS features and DFT calculations of different ligands and their respective selenium NHC complexes are compared. The identified characteristic RS and DFT features, of each of these ligands and their selenium complexes, show that the polarizability of benzimidazolium rings increases after complex formation with selenium. This has been shown by the enhanced intensity of the associated Raman peaks, therefore, confirming the formation of newly formed bonds. The complex formation is also confirmed by the identification of several new peaks in the spectra of complexes and these Raman bands were absent in the spectra of the ligands. Moreover, Raman spectral data sets are analyzed using a multivariate data analysis technique of Principal Component Analysis (PCA) to observe the efficiency of the RS analysis. The results presented in this study have proved the RS technique, along with DFT, an undoubtedly fast approach for the confirmation of synthesis of selenium based NHC-complexes.
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Affiliation(s)
- Sobia Younas
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Aqdas Riaz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Irfan Majeed
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Adnan Iqbal
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Nosheen Rashid
- Department of Chemistry, University of Education, Faisalabad Campus Faisalabad 38000 Pakistan
| | - Areeba Altaf
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Umar Sohail Shoukat
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Faisal Jamil
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Aafia Sehar
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Sania Munir
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Mahrosh Javed
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
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10
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Pacifici N, Rojalin T, Carney RP, Lewis JS. A Multi-Fluorophore Staining Scheme for Identification and Quantification of Vomocytosis. CHEMICAL & BIOMEDICAL IMAGING 2023; 1:725-737. [PMID: 38037611 PMCID: PMC10685718 DOI: 10.1021/cbmi.3c00050] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 12/02/2023]
Abstract
Vomocytosis is a process by which fungal pathogens, for instance, Cryptococcus neoformans (CN), escape from the digestive phagolysosome of phagocytic cells after ingestion. Interestingly, this expulsion leaves both the pathogen and phagocyte unharmed, and is believed to be an important mechanism by which CNs disseminate throughout infected hosts. This phenomenon was discovered in 2006, and research to date has relied almost entirely on quantification via manual counting of vomocytosis events in time-lapse microscopy videos. This archaic method has the significant disadvantages of requiring excessive labor in manual analysis, limited throughput capabilities, and low accuracy due to subjectivity. Here, we present an alternative method to measure vomocytosis rates using a multi-fluorophore reporter system comprised of two in situ staining steps during infection and a flow cytometry readout. This approach overcomes the limitations of conventional time lapse microscopy methods, with key advantages of high throughput capability, simple procedural steps, and accurate objective readouts. This study rigorously characterizes this vomocytosis reporter system in CN-infected MΦ and DC cultures via fluorescence microscopy, confocal microscopy, and flow cytometry. Here, this fluorescent tool is used to observe differences in expulsion rates after phagosome-modifying drug treatments and additionally utilized to distinguish differences in biochemical compositions among fluorescence-activated cell sorted fungal populations via Raman spectroscopy. Furthermore, this reporter scheme is demonstrated to be adaptable for use in measuring potential biomaterial particle expulsion events. Ultimately, the fluorescent reporter system presented here provides a universal tool for vomocytosis rate measurement of phagocytosed material. This facile approach opens the door to previously unfeasible types of vomocytosis-related studies such as high throughput treatment mechanistic screening and downstream characterization of expelled material.
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Affiliation(s)
- Noah Pacifici
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Tatu Rojalin
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Randy P. Carney
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Jamal S. Lewis
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
- J.
Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
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11
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Huang WL, Liao WH, Chu SY. Application of a Perovskite NIR-LED with Highly Stable FAPbI 3@SiO 2 Core-Shell Nanocomposites in a SPR Sensing Platform. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41151-41161. [PMID: 37596967 DOI: 10.1021/acsami.3c08940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/21/2023]
Abstract
In recent years, the demand for detection and diagnostic methods has consistently risen due to the aging of the population and the increase in the number of patients with chronic diseases. Label-free biomedical detection techniques have emerged as indispensable instruments for diagnosing a variety of diseases. The development of label-free and highly sensitive near-infrared (NIR) biomedical detection technology has attracted considerable attention. As a label-free, swift, and cost-effective analytical technique, it has demonstrated immense potential for a wide range of applications. We successfully assembled FAPbI3 near-infrared perovskite quantum dots (NIPQDs) into SiO2 shells using a rapid room-temperature atmospheric synthesis method, obtaining monodisperse FAPbI3@SiO2 nanocomposites (NCs) with a high photoluminescence quantum yield (PLQY) of 72%. Additionally, the incorporation of hydrophobic multi-branched trioctylphosphine oxide effectively passivated the surface defects of FAPbI3 NIPQDs and suppressed the hydrolysis rate of tetraethoxysilane, enabling the formation of a highly stable and high PLQY nanoscale-particle level within the FAPbI3@SiO2 core-shell structure. Notably, we successfully incorporated FAPbI3@SiO2 core-shell NCs onto InGaN blue chip as NIR excitation light sources for surface plasmon resonance sensing platforms, providing a novel platform for bioanalytical detection. With a detection sensitivity of 6302.5 nm/RIU, the system demonstrated high sensitivity, stability, and dependability. This achievement expands the biomedical research field's capacity for diagnosis, monitoring, and treatment.
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Affiliation(s)
- Wei-Lun Huang
- Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Wan-Hsuan Liao
- Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
- Program on Semiconductor Manufacturing Technology, National Cheng Kung University, Tainan 701, Taiwan
| | - Sheng-Yuan Chu
- Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
- Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
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12
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Andrzejewska W, Peplińska B, Litowczenko J, Obstarczyk P, Olesiak-Bańska J, Jurga S, Lewandowski M. SARS-CoV-2 Virus-like Particles with Plasmonic Au Cores and S1-Spike Protein Coronas. ACS Synth Biol 2023; 12:2320-2328. [PMID: 37449651 PMCID: PMC10443039 DOI: 10.1021/acssynbio.3c00133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Indexed: 07/18/2023]
Abstract
The COVID-19 pandemic has stimulated the scientific world to intensify virus-related studies aimed at the development of quick and safe ways of detecting viruses in the human body, studying the virus-antibody and virus-cell interactions, and designing nanocarriers for targeted antiviral therapies. However, research on dangerous viruses can only be performed in certified laboratories that follow strict safety procedures. Thus, developing deactivated virus constructs or safe-to-use virus-like objects, which imitate real viruses and allow performing virus-related studies in any research laboratory, constitutes an important scientific challenge. Such species, called virus-like particles (VLPs), contain instead of capsids with viral DNA/RNA empty or synthetic cores with real virus proteins attached to them. We have developed a method for the preparation of VLPs imitating the virus responsible for the COVID-19 disease: the SARS-CoV-2. The particles have Au cores surrounded by "coronas" of S1 domains of the virus's spike protein. Importantly, they are safe to use and specifically interact with SARS-CoV-2 antibodies. Moreover, Au cores exhibit localized surface plasmon resonance (LSPR), which makes the synthesized VLPs suitable for biosensing applications. During the studies, the effect allowed us to visualize the interaction between the VLPs and the antibodies and identify the characteristic vibrational signals. What is more, additional functionalization of the particles with a fluorescent label revealed their potential in studying specific virus-related interactions. Notably, the universal character of the developed synthesis method makes it potentially applicable for fabricating VLPs imitating other life-threatening viruses.
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Affiliation(s)
- Weronika Andrzejewska
- NanoBioMedical
Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Barbara Peplińska
- NanoBioMedical
Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Jagoda Litowczenko
- NanoBioMedical
Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Patryk Obstarczyk
- Institute
of Advanced Materials, Wroclaw University
of Science and Technology, Wybrzeże Wyspiańskiego 2, 50-370 Wrocław, Poland
| | - Joanna Olesiak-Bańska
- Institute
of Advanced Materials, Wroclaw University
of Science and Technology, Wybrzeże Wyspiańskiego 2, 50-370 Wrocław, Poland
| | - Stefan Jurga
- NanoBioMedical
Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Mikołaj Lewandowski
- NanoBioMedical
Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
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13
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Khaleghinejad SH, Shahsavani MB, Ghahramani M, Yousefi R. Investigating the role of double mutations R12C/P20R, and R12C/R69C on structure, chaperone-like activity, and amyloidogenic properties of human αB-crystallin. Int J Biol Macromol 2023; 242:124590. [PMID: 37116845 DOI: 10.1016/j.ijbiomac.2023.124590] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 04/08/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023]
Abstract
α-crystallin is a structurally essential small heat shock protein (sHSP) with a chaperone-like activity which maintains transparency of the lenticular tissues during a period of time that is as long as human life. α-crystallin is a multimeric protein consisting of αA and αB subunits, with 57 % homology. The CRYAB gene on chromosome 11 encodes human αB-crystallin (αB-Cry), which contains 175 amino acid residues. In the current study, the cataractogenic mutations R12C, P20R, R69C, and double mutations R12C/P20R and R12C/P20R were embedded into the human CRYAB gene. Following successful expression in the prokaryotic system and purification, a number of spectroscopic techniques, gel electrophoresis, dynamic light scattering (DLS), and transmission electron microscopy (TEM) were applied to assess the role of these mutations on the structure, amyloidogenicity, and biological function of human αB-Cry. The created mutations caused significant changes in the structure, and oligomeric state of human αB-Cry. These mutations, particularly R12C, R12C/P20R, and R12C/R69C, dramatically enhanced the tendency of this protein for the amyloid fibril formation and reduced its chaperone-like activity. Since double mutations R12C/P20R and R12C/P20R were able to intensely change the protein's structure and chaperone function, it can be suggested that they may play a destructive role in a cumulative manner. Our findings indicated that the simultaneous presence of two pathogenic mutations may have a cumulative destructive impacts on the structure and function of human αB-Cry and this observation is likely related to the disease severity of the mutated proteins.
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Affiliation(s)
- Seyed Hossein Khaleghinejad
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Mohammad Bagher Shahsavani
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Maryam Ghahramani
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran; Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran.
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14
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Viorica R, Pawel P, Płociński T, Gloc M, Dobrucka R, Kurzydłowski KJ, Boguslaw B. Consideration of a new approach to clarify the mechanism formation of AgNPs, AgNCl and AgNPs@AgNCl synthesized by biological method. NANOSCALE RESEARCH LETTERS 2023; 18:2. [PMID: 36723754 DOI: 10.1186/s11671-023-03777-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/24/2023] [Indexed: 05/24/2023]
Abstract
The biological methods are considered as environmental-eco-friendly methods for the silver nanocomposites mediation and are widely used in this context. However, the biological methods go along with the relevant limitations, for instance simultaneous synthesis of silver chlorides (AgNCl) type during the AgNPs mediation process. Therefore, the present research is coming to summarize several aspects in this context. Firstly, to present the possible promotion of the sustainable development using bioactive source (e.g. milk) as a source of two different available and new lactobacillus strains (Lactobacillus curvatus and Lactobacillus fermentum). Secondly, to show the ability of the respective isolates to be involved in mediation of various biosilver nanocomposites ((Bio)NCs) synthesis. Moreover, at this stage, for the first time, two (Bio)NCs mediation methods, called "direct method" and "modified method", have been developed, thus three types (AgNPs, AgNCl and AgNP@AgNCl) of nanocomposites mediated by two different Lactobacillus isolates take place. The interdisciplinary approach included using several spectroscopic, microscopic, spectrometric and thermogravimetric methods demonstrated that all six synthesized nanoparticles (three AgNPs, AgNCl and AgNP@AgNCl types from each source) consist of complex structure including both metallic silver core as well as organic surface deposits. The spectrometric technique allowed to identification of the organics branching surface, naturally secreted by the used Lactobacillus isolates during the inoculation step, suggesting the presence of amino-acids sequences which are direct connected with the reduction of silver ion to metal silver, and subsequently with the formation of coated (Bio)NCs and nucleation process. Moreover, based on the obtained results, the mediation mechanism of each (Bio)NCs has been proposed, suggesting that the formation of AgNPs, AgNCl and AgNP@AgNCl types occurs in different manners with faster synthesis firstly of AgNCl, then of the AgNPs type. No differences between the (Bio)NCs synthesized by two different Lactobacillus isolates have been noticed indicating no discrepancies between metabolites secreted by the respective sources.
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Affiliation(s)
- Railean Viorica
- Department of Infectious, Invasive Diseases and Veterinary Administration, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100, Toruń, Poland.
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, Wileńska 4, 87-100, Toruń, Poland.
| | - Pomastowski Pawel
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, Wileńska 4, 87-100, Toruń, Poland
| | - Tomasz Płociński
- Faculty of Materials Science and Engineering Warsaw, University of Technology, Ul. Wołoska 141, 02-507, Warsaw, Poland
| | - Michał Gloc
- Faculty of Materials Science and Engineering Warsaw, University of Technology, Ul. Wołoska 141, 02-507, Warsaw, Poland
| | - Renata Dobrucka
- Faculty of Materials Science and Engineering Warsaw, University of Technology, Ul. Wołoska 141, 02-507, Warsaw, Poland
- Department of Non-Food Products Quality and Packaging Development, Institute of Quality Science, Poznań University of Economics and Business, Al. Niepodległości 10, 61-875, Poznan, Poland
| | - Krzysztof Jan Kurzydłowski
- Faculty of Mechanical Engineering, Bialystok University of Technology, Ul. Wiejska 45C, 15-351, Białystok, Poland
| | - Buszewski Boguslaw
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, Wileńska 4, 87-100, Toruń, Poland
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100, Toruń, Poland
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15
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Hauptmann A, Hoelzl G, Mueller M, Bechtold-Peters K, Loerting T. Raman Marker Bands for Secondary Structure Changes of Frozen Therapeutic Monoclonal Antibody Formulations During Thawing. J Pharm Sci 2023; 112:51-60. [PMID: 36279956 DOI: 10.1016/j.xphs.2022.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/16/2022] [Accepted: 10/16/2022] [Indexed: 11/06/2022]
Abstract
In this work we use Raman spectroscopy for protein characterization in the frozen state. We investigate the behavior of frozen therapeutic monoclonal antibody IgG1 formulation upon thawing by Raman spectroscopy. Secondary and tertiary structure of the protein in three different mab formulations in the frozen state are followed through observation of marker bands for α-helix, β-sheet and random coil. We identify the tyrosine intensity ratio I856/I830 as a marker for mab aggregation. Upon fast cooling (40 °C/min) to -80 °C we observe a significant increase of random coil and α -helical structures, while this is not the case for slower cooling (20 °C/min) to -80 °C. Most changes in the protein's secondary structure are observed in the course of thawing in the range up to -20 °C, when passing through the glass transitions and cold-crystallization of the two types of freeze-concentrated solutions formed through macro- and microcryoconcentration. An increase of protein concentration and the addition of mannitol suppress secondary structural changes but do no impact on aggregation.
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Affiliation(s)
| | | | | | | | - Thomas Loerting
- Institute of Physical Chemistry, University Innsbruck, Innsbruck, Austria.
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16
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Beattie JW, Istrate A, Lu A, Marshall C, Rowland-Jones RC, Farys M, Kazarian SG, Byrne B. Causes of Industrial Protein A Column Degradation, Explored Using Raman Spectroscopy. Anal Chem 2022; 94:15703-15710. [DOI: 10.1021/acs.analchem.2c03063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- James W. Beattie
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
- Department of Chemical Engineering, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Alena Istrate
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Annabelle Lu
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Cameron Marshall
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Ruth C. Rowland-Jones
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Monika Farys
- Biopharm Process Research, Medicine Development & Supply, GSK R&D, Gunnels Wood Road, Stevenage, HertfordshireSG1 2NY, United Kingdom
| | - Sergei G. Kazarian
- Department of Chemical Engineering, Imperial College London, LondonSW7 2AZ, United Kingdom
| | - Bernadette Byrne
- Department of Life Sciences, Imperial College London, LondonSW7 2AZ, United Kingdom
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17
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Jayan H, Sun DW, Pu H, Wei Q. Surface-enhanced Raman spectroscopy combined with stable isotope probing to assess the metabolic activity of Escherichia coli cells in chicken carcass wash water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121549. [PMID: 35792480 DOI: 10.1016/j.saa.2022.121549] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/31/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Rapid evaluation of the metabolic activity of microorganisms is crucial in the assessment of the disinfection ability of various antimicrobial agents in the food industry. In this study, surface-enhanced Raman spectroscopy combined with isotope probing was employed for the analysis of the disinfection of single bacterial cells in the chicken carcass wash water. The Raman signals from single Escherichia coli O157:H7 cells were enhanced by in situ synthesis of silver nanoparticles. The ΔCD of the cells grown in presence of 0.5% hydrogen peroxide and 50 ppm chlorine was 5.86 ± 1.86% and 5.1 ± 2.3%, respectively, which showed significant reduction compared with cells grown in the absence of disinfecting agents (19.86 ± 2.51%) after 2 h of incubation. The study proved that the proposed method had the potential to assess the metabolic activity of microorganisms in other food products and optimize the disinfection process.
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Affiliation(s)
- Heera Jayan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Da-Wen Sun
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre, University College Dublin, National University of Ireland, Belfield, Dublin 4, Ireland.
| | - Hongbin Pu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
| | - Qingyi Wei
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China
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18
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Rodzik A, Railean V, Pomastowski P, Žuvela P, Wong MW, Buszewski B. The influence of zinc ions concentration on β-lactoglobulin structure – physicochemical properties of Zn–β-lactoglobulin complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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19
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Rodzik A, Railean V, Pomastowski P, Žuvela P, Wong MW, Sprynskyy M, Buszewski B. Study on silver ions binding to β-lactoglobulin. Biophys Chem 2022; 291:106897. [DOI: 10.1016/j.bpc.2022.106897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 11/02/2022]
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20
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Lorenzen AL, dos Santos AM, dos Santos LP, da Silva Pinto L, Conceição FR, Wolfart F. PEDOT-AuNPs-based impedimetric immunosensor for the detection of SARS-CoV-2 antibodies. Electrochim Acta 2022; 404:139757. [PMID: 34955549 PMCID: PMC8684030 DOI: 10.1016/j.electacta.2021.139757] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/11/2021] [Accepted: 12/16/2021] [Indexed: 12/16/2022]
Abstract
Electrochemical sensors and biosensors are useful techniques for fast, inexpensive, sensitive, and easy detection of innumerous specimen. In face of COVID-19 pandemic, it became evident the necessity of a rapid and accurate diagnostic test, so the impedimetric immunosensor approach can be a good alternative to replace the conventional tests due to the specific antibody-antigen binding interaction and the fast response in comparison to traditional methods. In this work, a modified electrode with electrosynthesized PEDOT and gold nanoparticles followed by the immobilization of truncated nucleoprotein (N aa160-406aa) was used for a fast and reliable detection of antibodies against COVID-19 in human serum sample. The method consists in analyzing the charge-transfer resistance (RCT) variation before and after the modified electrode comes into contact with the positive and negative serum sample for COVID-19, using [Fe(CN)6]3-/4- as a probe. The results show a linear and selective response for serum samples diluted in a range of 2.5 × 103 to 20 × 103. Also, the electrode material was fully characterized by Raman spectroscopy, transmission electron microscopy and scanning electron microscopy coupled with EDS, indicating that the gold nanoparticles were well distributed around the polymer matrix and the presence of the biological sample was confirmed by EDS analysis. EIS measurements allowed to differentiate the negative and positive samples by the difference in the RCT magnitude, proving that the material developed here has potential properties to be applied in impedimetric immunosensors for the detection of SARS-CoV-2 antibodies in about 30 min.
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Affiliation(s)
- Ana Luiza Lorenzen
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha – Campus São Borja, Rua Otaviano Castilho Mendes, 355, Betim, São Borja, RS CEP 97670-000, Brazil
| | - Ariane Moraes dos Santos
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha – Campus São Borja, Rua Otaviano Castilho Mendes, 355, Betim, São Borja, RS CEP 97670-000, Brazil
| | - Luâni Poll dos Santos
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha – Campus São Borja, Rua Otaviano Castilho Mendes, 355, Betim, São Borja, RS CEP 97670-000, Brazil
| | - Luciano da Silva Pinto
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia – Campus Capão do Leão, S/N, Capão do Leão, RS CEP 96160-000, Brazil
| | - Fabricio Rochedo Conceição
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia – Campus Capão do Leão, S/N, Capão do Leão, RS CEP 96160-000, Brazil
| | - Franciele Wolfart
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha – Campus São Borja, Rua Otaviano Castilho Mendes, 355, Betim, São Borja, RS CEP 97670-000, Brazil,Corresponding author
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21
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Biochemical changes in the cytoplasm of bovine oocytes during the in vitro maturation process: a Raman microscopy study. Vet Res Commun 2022; 46:549-562. [PMID: 34994940 DOI: 10.1007/s11259-021-09882-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/27/2021] [Indexed: 10/19/2022]
Abstract
The sequence and chronology of the main biochemical changes occurring in the cytoplasm of bovine oocytes during the in vitro maturation process were tracked by Raman microscopy applied to cells previously subjected to enzymatic digestion of the zona pellucida. Specific spectral markers for proteins, lipids and carbohydrates were used to evaluate the developmental status of the ooplasm at four different times. Spectral changes revealed that lipid accumulation was dominant during the first six hours of culture while protein content reached the average levels characteristic of mature oocytes within the last four hours of the maturation process. A time-dependent decrease in carbohydrates was also observed. Finally, the carbohydrate-to-protein (P1037/P1002) ratio proved to be sensitive enough to determine the cytoplasmic maturation state of bovine oocytes and promises to be useful in future research aimed at optimizing culture conditions through the promotion of protein accumulation in the ooplasm.
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22
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Khoshaman K, Ghahramani M, Shahsavani MB, Moosavi-Movahedi AA, Kurganov BI, Yousefi R. Myopathy-associated G154S mutation causes important changes in the conformational stability, amyloidogenic properties, and chaperone-like activity of human αB-crystallin. Biophys Chem 2021; 282:106744. [PMID: 34983005 DOI: 10.1016/j.bpc.2021.106744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/02/2022]
Abstract
Glycine to serine substitution at position 154 of human αB-crystallin (αB-Cry) is behind the development of cardiomyopathy and late-onset distal myopathy. The current study was conducted with the aim to investigate the structural and functional features of the G154S mutant αB-Cry using various spectroscopic techniques and microscopic analyses. The secondary and tertiary structures of human αB-Cry were preserved mainly in the presence of G154S mutation, but the mutant protein indicated a reduced chaperone-like activity when γ-Cry as its natural partner in eye lenses was the substrate protein. Moreover, a significant reduction in the enzyme refolding ability and in vivo chaperone activity of the mutant protein were observed. Also, the mutant protein displayed reduced conformational stability upon urea-induced denaturation. Both fluorescence and electron microscopic analyses suggested that G154S mutant protein has an increased susceptibility for amyloid fibril formation. Therefore, the pathomechanism of G154S mutation can be explained by its attenuated chaperone function, decreased conformational stability, and increased amyloidogenic propensity. Some of these important changes may also alter the correct interaction of the mutated αB-Cry with its target proteins in myopathy.
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Affiliation(s)
- Kazem Khoshaman
- Protein Chemistry Laboratory (PCL), Department of Biology, Shiraz University, Shiraz, Iran
| | - Maryam Ghahramani
- Protein Chemistry Laboratory (PCL), Department of Biology, Shiraz University, Shiraz, Iran
| | | | | | - Boris I Kurganov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave., Moscow 119071, Russia
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Department of Biology, Shiraz University, Shiraz, Iran; Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran.
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23
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Structural and functional studies of D109A human αB-crystallin contributing to the development of cataract and cardiomyopathy diseases. PLoS One 2021; 16:e0260306. [PMID: 34843556 PMCID: PMC8629256 DOI: 10.1371/journal.pone.0260306] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 11/06/2021] [Indexed: 12/03/2022] Open
Abstract
αB-crystallin (heat shock protein β5/HSPB5) is a member of the family of small heat shock proteins that is expressed in various organs of the human body including eye lenses and muscles. Therefore, mutations in the gene of this protein (CRYAB) might have many pathological consequences. A new mutation has recently been discovered in the α-crystallin domain of this chaperone protein which replaces aspartate 109 with alanine (D109A). This mutation can cause myofibrillar myopathy (MFM), cataracts, and cardiomyopathy. In the current study, several spectroscopic and microscopic analyses, as well as gel electrophoresis assessment were applied to elucidate the pathogenic contribution of human αB-crystallin bearing D109A mutation in development of eye lens cataract and myopathies. The protein oligomerization, chaperone-like activity and chemical/thermal stabilities of the mutant and wild-type protein were also investigated in the comparative assessments. Our results suggested that the D109A mutation has a significant impact on the important features of human αB-crystallin, including its structure, size of the protein oligomers, tendency to form amyloid fibrils, stability, and chaperone-like activity. Given the importance of aspartate 109 in maintaining the proper structure of the α-crystallin domain, its role in the dimerization and chaperone-like activity, as well as preserving protein stability through the formation of salt bridges; mutation at this important site might have critical consequences and can explain the genesis of myopathy and cataract disorders. Also, the formation of large light-scattering aggregates and disruption of the chaperone-like activity by D109A mutation might be considered as important contributing factors in development of the eye lens opacity.
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Factors Affecting Preparation of Molecularly Imprinted Polymer and Methods on Finding Template-Monomer Interaction as the Key of Selective Properties of the Materials. Molecules 2021; 26:molecules26185612. [PMID: 34577083 PMCID: PMC8470890 DOI: 10.3390/molecules26185612] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 12/23/2022] Open
Abstract
Molecular imprinting is a technique for creating artificial recognition sites on polymer matrices that complement the template in terms of size, shape, and spatial arrangement of functional groups. The main advantage of Molecularly Imprinted Polymers (MIP) as the polymer for use with a molecular imprinting technique is that they have high selectivity and affinity for the target molecules used in the molding process. The components of a Molecularly Imprinted Polymer are template, functional monomer, cross-linker, solvent, and initiator. Many things determine the success of a Molecularly Imprinted Polymer, but the Molecularly Imprinted Polymer component and the interaction between template-monomers are the most critical factors. This review will discuss how to find the interaction between template and monomer in Molecularly Imprinted Polymer before polymerization and after polymerization and choose the suitable component for MIP development. Computer simulation, UV-Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Proton-Nuclear Magnetic Resonance (1H-NMR) are generally used to determine the type and strength of intermolecular interaction on pre-polymerization stage. In turn, Suspended State Saturation Transfer Difference High Resolution/Magic Angle Spinning (STD HR/MAS) NMR, Raman Spectroscopy, and Surface-Enhanced Raman Scattering (SERS) and Fluorescence Spectroscopy are used to detect chemical interaction after polymerization. Hydrogen bonding is the type of interaction that is becoming a focus to find on all methods as this interaction strongly contributes to the affinity of molecularly imprinted polymers (MIPs).
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Basak M, Mitra S, Agnihotri SK, Jain A, Vyas A, Bhatt MLB, Sachan R, Sachdev M, Nemade HB, Bandyopadhyay D. Noninvasive Point-of-Care Nanobiosensing of Cervical Cancer as an Auxiliary to Pap-Smear Test. ACS APPLIED BIO MATERIALS 2021; 4:5378-5390. [PMID: 35007017 DOI: 10.1021/acsabm.1c00470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A potential cancer antigen (Ag), protein-phosphatase-1-gamma-2 (PP1γ2), with a restricted expression in testis and sperms has been identified as a biomarker specific to cervical cancer (CaCx). Detection of this cancer biomarker antigen (NCB-Ag) in human urine opens up the possibility of noninvasive detection of CaCx to supplement the dreaded and invasive Pap-smear test. A colorimetric response of an assembly of gold nanoparticles (Au NPs) has been employed for the quantitative, noninvasive, and point-of-care-testing of CaCx in the urine. In order to fabricate the immunosensor, Au NPs of sizes ∼5-20 nm have been chemically modified with a linker, 3,3'-di-thio-di-propionic-acid-di(n-hydroxy-succinimide-ester) (DTSP) to attach the antibody (Ab) specific to the NCB-Ag. Interestingly, the addition of Ag to the composite of Ab-DTSP-Au NPs leads to a significant hypsochromic shift due to a localized surface plasmon resonance phenomenon, which originates from the specific epitope-paratope interaction between the NCB-Ag and Ab-DTSP-Au NPs. The variations in the absorbance and wavelength shift during such attachments of different concentrations of NCB-Ag on the Ab-DTSP-Au NPs composite have been employed as a calibration to identify NCB-Ag in human urine. An in-house prototype has been assembled by integrating a light-emitting diode of a narrow range wavelength in one side of a cuvette in which the reaction has been performed while a sensitive photodetector to the other side to transduce the transmitted signal associated with the loading of NCB-Ag in the Ab-DTSP-Au NPs composite. The proposed immunosensing platform has been tested against other standard proteins to ensure noninterference alongside proving the proof-for-specificity of the NCB detection.
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Affiliation(s)
- Mitali Basak
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Shirsendu Mitra
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Saurabh Kumar Agnihotri
- Endocrinology, Division, CSIR-Central Drug Research Institute Lucknow, Lucknow, Uttar Pradesh 226 031, India
| | - Ankita Jain
- Endocrinology, Division, CSIR-Central Drug Research Institute Lucknow, Lucknow, Uttar Pradesh 226 031, India
| | - Akanksha Vyas
- Endocrinology, Division, CSIR-Central Drug Research Institute Lucknow, Lucknow, Uttar Pradesh 226 031, India
| | | | - Rekha Sachan
- King George's Medical University, Lucknow, Uttar Pradesh 226 003, India
| | - Monika Sachdev
- Endocrinology, Division, CSIR-Central Drug Research Institute Lucknow, Lucknow, Uttar Pradesh 226 031, India
| | - Harshal B Nemade
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Dipankar Bandyopadhyay
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.,Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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Optimization of High-Density Fe-Au Nano-Arrays for Surface-Enhanced Raman Spectroscopy of Biological Samples. BIOSENSORS-BASEL 2021; 11:bios11060181. [PMID: 34198940 PMCID: PMC8229969 DOI: 10.3390/bios11060181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/26/2021] [Accepted: 06/02/2021] [Indexed: 11/19/2022]
Abstract
The method of realizing nanostructures using porous alumina templates has attracted interest due to the precise geometry and cheap cost of nanofabrication. In this work, nanoporous alumina membranes were utilized to realize a forest of nanowires, providing a bottom-up nanofabrication method suitable for surface-enhanced Raman spectroscopy (SERS). Gold and iron were electroplated through the straight channels of the membrane. The resulting nanowires are, indeed, made of an active element for plasmonic resonance and SERS as the hexagonal distribution of the nanowires and the extreme high density of the nanowires allows to excite the plasmon and detect the Raman signal. The method to reduce the distance between pores and, consequently, the distance of the nanowires after electrodeposition is optimized here. Indeed, it has been predicted that the light intensity enhancement factor is up to 1012 when the gap is small than 10 nm. Measurements of Raman signal of thiol groups drying on the gold nanowires show that the performance of the device is improved. As the thiol group can be linked to proteins, the device has the potential of a biosensor for the detection of a few biomolecules. To assess the performance of the device and demonstrate its ability to analyze biological solutions, we used it as SERS substrates to examine solutions of IgG in low abundance ranges. The results of the test indicate that the sensor can convincingly detect biomolecules in physiologically relevant ranges.
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Linet A, Joseph MM, Haritha M, Shamna K, Varughese S, Devi PS, Suresh CH, Maiti KK, Neogi I. De novo design and synthesis of boomerang-shaped molecules and their in silico and SERS-based interactions with SARS-CoV-2 spike protein and ACE2. NEW J CHEM 2021. [DOI: 10.1039/d1nj02955j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Boomerang shaped molecule and its interaction study with SARS-CoV-2 S-protein–ACE2 using molecular docking, SERS and UV-Vis spectroscopy.
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Affiliation(s)
- Amrutham Linet
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manu M. Joseph
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
| | - Mambatta Haritha
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - K. Shamna
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
| | - Sunil Varughese
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - P. Sujatha Devi
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - C. H. Suresh
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Kaustabh Kumar Maiti
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ishita Neogi
- CSIR-National Institute for Interdisciplinary Sciences and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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High-Throughput Raman Spectroscopy Combined with Innovate Data Analysis Workflow to Enhance Biopharmaceutical Process Development. Processes (Basel) 2020. [DOI: 10.3390/pr8091179] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Raman spectroscopy has the potential to revolutionise many aspects of biopharmaceutical process development. The widespread adoption of this promising technology has been hindered by the high cost associated with individual probes and the challenge of measuring low sample volumes. To address these issues, this paper investigates the potential of an emerging new high-throughput (HT) Raman spectroscopy microscope combined with a novel data analysis workflow to replace off-line analytics for upstream and downstream operations. On the upstream front, the case study involved the at-line monitoring of an HT micro-bioreactor system cultivating two mammalian cell cultures expressing two different therapeutic proteins. The spectra generated were analysed using a partial least squares (PLS) model. This enabled the successful prediction of the glucose, lactate, antibody, and viable cell density concentrations directly from the Raman spectra without reliance on multiple off-line analytical devices and using only a single low-volume sample (50–300 μL). However, upon the subsequent investigation of these models, only the glucose and lactate models appeared to be robust based upon their model coefficients containing the expected Raman vibrational signatures. On the downstream front, the HT Raman device was incorporated into the development of a cation exchange chromatography step for an Fc-fusion protein to compare different elution conditions. PLS models were derived from the spectra and were found to predict accurately monomer purity and concentration. The low molecular weight (LMW) and high molecular weight (HMW) species concentrations were found to be too low to be predicted accurately by the Raman device. However, the method enabled the classification of samples based on protein concentration and monomer purity, allowing a prioritisation and reduction in samples analysed using A280 UV absorbance and high-performance liquid chromatography (HPLC). The flexibility and highly configurable nature of this HT Raman spectroscopy microscope makes it an ideal tool for bioprocess research and development, and is a cost-effective solution based on its ability to support a large range of unit operations in both upstream and downstream process operations.
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Yin Z, Guo H, Li Y, Chiu J, Tian L. Ultrastable Plasmonic Bioink for Printable Point-Of-Care Biosensors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35977-35985. [PMID: 32677818 DOI: 10.1021/acsami.0c11799] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Point-of-care biosensors are critically important for early disease diagnosis and timely clinical intervention in resource-limited settings. The real-world application of these biosensors requires the use of stable biological reagents and cost-effective fabrication approaches. To meet these stringent requirements, we introduce a generic encapsulation strategy to realize ultrastable plasmonic bioink by encapsulating antibodies with an organosiloxane polymer through in situ polymerization. Plasmonic nanostructures serve as sensitive nanotransducers, allowing for label-free biochemical detection. The plasmonic bioink with encapsulated antibodies exhibits excellent thermal, biological, and colloidal stabilities making it compatible with printing process. As a proof-of-concept, we demonstrate the printability of the ultrastable plasmonic bioinks on different types of substrates with direct writing techniques. The organosiloxane polymer preserves the biorecognition capabilities of the biosensors under harsh conditions, including elevated temperature, exposure to chemical/biological denaturants, and ultrasonic agitation. Plasmonic biochips fabricated with the ultrastable ink exhibit superior stability compared to the biochips with unencapsulated antibodies.
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Affiliation(s)
- Ze Yin
- Department of Biomedical Engineering, and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
| | - Heng Guo
- Department of Biomedical Engineering, and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
| | - Yixuan Li
- Department of Biomedical Engineering, and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
| | - Joshua Chiu
- Department of Biomedical Engineering, and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
| | - Limei Tian
- Department of Biomedical Engineering, and Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843, United States
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Shin H, Oh S, Kang D, Choi Y. Protein Quantification and Imaging by Surface-Enhanced Raman Spectroscopy and Similarity Analysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1903638. [PMID: 32537409 PMCID: PMC7284192 DOI: 10.1002/advs.201903638] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/07/2020] [Accepted: 03/09/2020] [Indexed: 05/29/2023]
Abstract
Protein quantification techniques such as immunoassays have been improved considerably, but they have several limitations, including time-consuming procedures, low sensitivity, and extrinsic detection. Because direct surface-enhanced Raman spectroscopy (SERS) can detect intrinsic signals of proteins, it can be used as an effective detection method. However, owing to the complexity and reliability of SERS signals, SERS is rarely adopted for quantification without a purified target protein. This study reports an efficient and effective direct SERS-based immunoassay (SERSIA) technique for protein quantification and imaging. SERSIA relies on the uniform coating of gold nanoparticles (GNPs) on a target-protein-immobilized substrate by simple centrifugation. As centrifugation induces close contact between the GNPs and target proteins, the intrinsic signals of the target protein can be detected. For quantification, the protein levels in a cell lysate are estimated using similarity analysis between antibody-only and protein-conjugated samples. This method reliably estimates the protein level at a sub-picomolar detection limit. Furthermore, this method enables quantitative imaging of immobilized protein at a micrometer range. Because this technique is fast, sensitive, and requires only one type of antibody, this approach can be a useful method to detect proteins in biological samples.
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Affiliation(s)
- Hyunku Shin
- Department of Bio‐convergence EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Seunghyun Oh
- School of Biomedical EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Daehyeon Kang
- School of Biomedical EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Yeonho Choi
- Department of Bio‐convergence EngineeringKorea UniversitySeoul02841Republic of Korea
- School of Biomedical EngineeringKorea UniversitySeoul02841Republic of Korea
- Department of BioengineeringKorea UniversitySeoul02841Republic of Korea
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Ali S, Riaz A, Nawaz H, Majeed MI, Iqbal MA, Bhatti HN, Rashid N, Kashif M, Tahir M, Nasir S, Ullah S, Farooq S, Naseem A. Raman spectral characterization of silver metal-based complexes of different benzimidazolium ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 232:118162. [PMID: 32106031 DOI: 10.1016/j.saa.2020.118162] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/13/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
In this study, Raman spectroscopy has been employed for the characterization of two structurally different monodentate N-heterocyclic carbene ligands (ligand-1 and ligand-2) and their respective complexes (complex-1 and complex-2). The Raman spectral features are found helpful for the confirmation of formation of complexes. The significant Raman spectral features are identified for benzimidazole ring with higher intensities in carbene complexes having more polarizability as compared to their ligands, providing the evidence for the formation of coordinate covalent bond. The successful complexation is further supported by using multivariate data analysis technique, Principal Component Analysis (PCA), which is found very helpful to highlight the variability of Raman spectral data of both ligands and their respective metal complexes from each other. Moreover, the coordination of carbene with Ag(I) is confirmed from the dominant spectral markers of higher intensities at 359 cm-1 in complex-1 and 338 cm-1 in complex-2. The effective and reliable characterization and confirmation of metal complexes indicates the potential of Raman spectroscopy for its use for the characterization of the organometallic complexes and other chemical products.
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Affiliation(s)
- Saqib Ali
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Ayesha Riaz
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan.
| | | | | | - Haq Nawaz Bhatti
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Nosheen Rashid
- Department of Chemistry, University of Central Punjab, Faisalabad campus, Faisalabad, Pakistan
| | - Muhammad Kashif
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Muhammad Tahir
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Saira Nasir
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Saif Ullah
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Sidra Farooq
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
| | - Ammara Naseem
- Department of Chemistry, University of Agriculture Faisalabad-38040, Pakistan
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Ultrasensitive Stress Biomarker Detection Using Polypyrrole Nanotube Coupled to a Field-Effect Transistor. MICROMACHINES 2020; 11:mi11040439. [PMID: 32331254 PMCID: PMC7231345 DOI: 10.3390/mi11040439] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/13/2020] [Accepted: 04/21/2020] [Indexed: 12/18/2022]
Abstract
Stress biomarkers such as hormones and neurotransmitters in bodily fluids can indicate an individual’s physical and mental state, as well as influence their quality of life and health. Thus, sensitive and rapid detection of stress biomarkers (e.g., cortisol) is important for management of various diseases with harmful symptoms, including post-traumatic stress disorder and depression. Here, we describe rapid and sensitive cortisol detection based on a conducting polymer (CP) nanotube (NT) field-effect transistor (FET) platform. The synthesized polypyrrole (PPy) NT was functionalized with the cortisol antibody immunoglobulin G (IgG) for the sensitive and specific detection of cortisol hormone. The anti-cortisol IgG was covalently attached to a basal plane of PPy NT through an amide bond between the carboxyl group of PPy NT and the amino group of anti-cortisol IgG. The resulting field-effect transistor-type biosensor was utilized to evaluate various cortisol concentrations. Cortisol was sensitively measured to a detection limit of 2.7 × 10−10 M (100 pg/mL), with a dynamic range of 2.7 × 10−10 to 10−7 M; it exhibited rapid responses (<5 s). We believe that our approach can serve as an alternative to time-consuming and labor-intensive health questionnaires; it can also be used for diagnosis of underlying stress-related disorders.
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Ghahramani M, Yousefi R, Niazi A, Kurganov B. The congenital cataract-causing mutations P20R and A171T are associated with important changes in the amyloidogenic feature, structure and chaperone-like activity of human αB-crystallin. Biopolymers 2020; 111:e23350. [PMID: 32110827 DOI: 10.1002/bip.23350] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 02/01/2020] [Accepted: 02/12/2020] [Indexed: 12/22/2022]
Abstract
Cataract is the major reason for human blindness worldwide. α-Crystallin, as a key chaperone of eye lenses, keeps the lenticular tissues in its transparent state over time. In this study, cataract-causing familial mutations, P20R and A171T, were introduced in CRYАB gene. After successful expression in Escherichia coli and subsequent purification, the recombinant proteins were subjected to extensive structural and functional analyses using various spectroscopic techniques, gel electrophoresis, and electron microscopy. The results of fluorescence and Raman assessments suggest important but discreet conformational changes in human αB-Cry upon these cataractogenic mutations. Furthermore, the mutant proteins exhibited significant secondary structural alteration as revealed by FTIR and Raman spectroscopy. An increase in conformational stability was seen in the human αB-Cry bearing these congenital cataractogenic mutations. The oligomeric size distribution and chaperone-like activity of human αB-Cry were significantly altered by these mutations. The P20R mutant protein was observed to loose most of the chaperone-like activity. Finally, these cataractogenic mutant proteins exhibited an increased propensity to form the amyloid fibrils when incubated under environmental stress. Overall, the structural and functional changes in mutated human αB-Cry proteins can shed light on the pathogenic development of congenital cataracts.
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Affiliation(s)
- Maryam Ghahramani
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Ali Niazi
- Institute of Biotechnology, Shiraz University, Shiraz, Iran
| | - Boris Kurganov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
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Ealias AM, Saravanakumar MP. Application of protein-functionalised aluminium nanosheets synthesised from sewage sludge for dye removal in a fixed-bed column: Investigation on design parameters and kinetic models. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:2955-2976. [PMID: 31836990 DOI: 10.1007/s11356-019-07139-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/20/2019] [Indexed: 06/10/2023]
Abstract
Protein-functionalised aluminium nanosheets (PRS-AlNs) were packed in a continuous fixed-bed column to remove crystal violet (CV) and Congo red (CR) dyes. A group of characterisation techniques, like SEM, TEM, AFM, XRD, BET, DSC and Raman spectroscopy, was performed for PRS-AlNs. The influence of several factors like bed depth (1, 2 and 3 cm), inlet dye concentration (50, 100 and 150 mg/L) and inlet flow rate (1.17, 2.26 and 3.34 mL/min) on the characteristics of the breakthrough profile of the adsorption process was examined at optimum pH 9.8 and 3.5 for CV and CR, respectively. The maximum adsorption capacity was achieved as 38.70 and 57.86 mg/g for CV and CR at 1 cm bed depth, 150 mg/L inlet concentration of the dye and 3.34 mL/min inlet rate of flow. The experimental data were analysed using kinetic models like the Yoon-Nelson, Adams-Bohart and Thomas models. Also, a detailed mechanism behind the CV and CR adsorption using PRS-AlNs was proposed in this research work. Graphical abstract .
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Affiliation(s)
- Anu Mary Ealias
- Department of Environmental & Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Manickam Puratchiveeran Saravanakumar
- Department of Environmental & Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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Ghahramani M, Yousefi R, Krivandin A, Muranov K, Kurganov B, Moosavi-Movahedi AA. Structural and functional characterization of D109H and R69C mutant versions of human αB-crystallin: The biochemical pathomechanism underlying cataract and myopathy development. Int J Biol Macromol 2019; 146:1142-1160. [PMID: 31678106 DOI: 10.1016/j.ijbiomac.2019.09.239] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/15/2022]
Abstract
In human αB-crystallin (αB-Cry), the highly conserved residues arginine 69 (R69) and aspartate 109 (D109) are located within a critical motif of α-crystallin domain (ACD), contributing to the subunit interactions and oligomeric assembly. Recently, two missense mutations (R69C and D109H) in human αB-Cry have been reported to cause congenital cataract and myopathy disorders. We used various spectroscopic techniques, dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), gel electrophoresis and transmission electron microscopy (TEM) to show how these mutations cause significant changes in structure, amyloidogenic feature and biological function of human αB-Cry. These pathogenic mutations resulted in the important alterations of the secondary, tertiary and oligomeric (quaternary) structures of human αB-Cry. The missense mutations were also capable to significantly increase the amyloidogenic propensity of human αB-Cry and to diminish the chaperone-like activity of this protein. The above mentioned changes were observed more noticeably after D109H mutation. The detrimental effects of D109H mutation may be due to the loss of salt bridge with R120 in the dimeric interface, flagging the anti-aggregation ability of αB-Cry chaperone. In conclusion, the R69C and D109H mutations displayed a significant damaging effect on the structure and chaperone function of human αB-Cry which could be considered as their biochemical pathomechanisms in development of congenital cataract and myopathy disorders.
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Affiliation(s)
- Maryam Ghahramani
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran.
| | - Alexey Krivandin
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin str. 4, Moscow 119991, Russia
| | - Konstantin Muranov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin str. 4, Moscow 119991, Russia
| | - Boris Kurganov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave., Moscow 119071, Russia
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Detection of dengue using PAMAM dendrimer integrated tapered optical fiber sensor. Sci Rep 2019; 9:13483. [PMID: 31530893 PMCID: PMC6748962 DOI: 10.1038/s41598-019-49891-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 08/31/2019] [Indexed: 11/08/2022] Open
Abstract
The exponential escalation of dengue cases has indeed become a global health crisis. This work elaborates on the development of a biofunctionalized tapered optical fiber (TOF) based sensor with the integration of polyamidoamine (PAMAM) dendrimer for the detection of dengue E protein. The dimension of the TOF generated an evanescent field that was sensitive to any changes in the external medium while the integration of PAMAM promoted more adhesion of bio-recognition molecules; anti-DENV II E protein antibodies; that were complementary to the targeted protein. This in return created more active sites for the absorption of DENV II E proteins onto the tapered region. The resolution and detection limit of the sensor are 19.53 nm/nM and 1 pM, respectively with Kd = 1.02 × 10-10 M.
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Witkowska D, Rowińska-Żyrek M. Biophysical approaches for the study of metal-protein interactions. J Inorg Biochem 2019; 199:110783. [PMID: 31349072 DOI: 10.1016/j.jinorgbio.2019.110783] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/10/2019] [Accepted: 07/15/2019] [Indexed: 12/17/2022]
Abstract
Protein-protein interactions play important roles for a variety of cell functions, often involving metal ions; in fact, metal-ion binding mediates and regulates the activity of a wide range of biomolecules. Enlightening all of the specific features of metal-protein and metal-mediated protein-protein interactions can be a very challenging task; a detailed knowledge of the thermodynamic and spectroscopic parameters and the structural changes of the protein is normally required. For this purpose, many experimental techniques are employed, embracing all fields of Analytical and Bioinorganic Chemistry. In addition, the use of peptide models, reproducing the primary sequence of the metal-binding sites, is also proved to be useful. In this paper, a review of the most useful techniques for studying ligand-protein interactions with a special emphasis on metal-protein interactions is provided, with a critical summary of their strengths and limitations.
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Affiliation(s)
- Danuta Witkowska
- Public Higher Medical Professional School in Opole, Katowicka 68, 45060 Opole, Poland.
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38
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Signorelli S, Cannistraro S, Bizzarri AR. Raman Evidence of p53-DBD Disorder Decrease upon Interaction with the Anticancer Protein Azurin. Int J Mol Sci 2019; 20:ijms20123078. [PMID: 31238511 PMCID: PMC6627904 DOI: 10.3390/ijms20123078] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/13/2019] [Accepted: 06/20/2019] [Indexed: 12/30/2022] Open
Abstract
Raman spectroscopy, which is a suitable tool to elucidate the structural properties of intrinsically disordered proteins, was applied to investigate the changes in both the structure and the conformational heterogeneity of the DNA-binding domain (DBD) belonging to the intrinsically disordered protein p53 upon its binding to Azurin, an electron-transfer anticancer protein from Pseudomonas aeruginosa. The Raman spectra of the DBD and Azurin, isolated in solution or forming a complex, were analyzed by a combined analysis based on peak inspection, band convolution, and principal component analysis (PCA). In particular, our attention was focused on the Raman peaks of Tyrosine and Tryptophan residues, which are diagnostic markers of protein side chain environment, and on the Amide I band, of which the deconvolution allows us to extract information about α-helix, β-sheet, and random coil contents. The results show an increase of the secondary structure content of DBD concomitantly with a decrease of its conformational heterogeneity upon its binding to Azurin. These findings suggest an Azurin-induced conformational change of DBD structure with possible implications for p53 functionality.
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Affiliation(s)
- Sara Signorelli
- Biophysics & Nanoscience Centre, DEB, Università della Tuscia, 01100 Viterbo, Italy.
| | - Salvatore Cannistraro
- Biophysics & Nanoscience Centre, DEB, Università della Tuscia, 01100 Viterbo, Italy.
| | - Anna Rita Bizzarri
- Biophysics & Nanoscience Centre, DEB, Università della Tuscia, 01100 Viterbo, Italy.
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39
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Daood U, Burrow MF, Yiu CKY. Effect of a novel quaternary ammonium silane cavity disinfectant on cariogenic biofilm formation. Clin Oral Investig 2019; 24:649-661. [PMID: 31115692 DOI: 10.1007/s00784-019-02928-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 04/30/2019] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Evaluate effect of quaternary ammonium silane (QAS) cavity disinfectant on cariogenic biofilm. MATERIALS AND METHODS Single- (Streptococcus mutans or Lactobacillus acidophilus), dual- (Streptococcus mutans/Lactobacillus Acidophilus), and multi-species (Streptococcus mutans, Actinomyces naeslundii, and Streptococcus sanguis) biofilms were grown on acid-etched dentine discs. Biofilms were incubated (120 min/37 °C) and allowed to grow for 3 days anaerobically. Discs (no treatment) served as control (group 1). Groups II, III, IV, and V were then treated with 2% chlorhexidine, and 2%, 5%, and 10% QAS (20 s). Discs were returned to well plates with 300 μL of bacterial suspension and placed in anaerobic incubator at 37 °C and biofilms redeveloped for 4 days. Confocal microscopy, Raman, CFU, and MTT assay were performed. RESULTS Raman peaks show shifts at 1450 cm-1, 1453 cm-1, 1457 cm-1, 1460 cm-1, and 1462 cm-1 for control, 2% CHX, 2%, 5%, and 10% QAS groups in multi-species biofilms. There was reduction of 484 cm-1 band in 10% QAS group. CLSM revealed densely clustered green colonies in control group and red confluent QAS-treated biofilms with significantly lower log CFU for single/dual species. Metabolic activities of Streptococcus mutans and Lactobacillus acidophilus decreased with increasing QAS exposure time. CONCLUSION Quaternary ammonium silanes possess antimicrobial activities and inhibit growth of cariogenic biofilms. CLINICAL SIGNIFICANCE Available data demonstrated use of QAS as potential antibacterial cavity disinfectant in adhesive dentistry. Experimental QAS can effectively eliminate caries-forming bacteria, when used inside a prepared cavity, and can definitely overcome problems associated with present available cavity disinfectants.
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Affiliation(s)
- U Daood
- Clinical Dentistry, Restorative Division, Faculty of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Bukit Jalil, Wilayah Persekutuan, 57000, Kuala Lumpur, Malaysia.
| | - M F Burrow
- Prosthodontic Dentistry, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Pokfulam, Hong Kong, SAR, China
| | - C K Y Yiu
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Pokfulam, Hong Kong, SAR, China
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40
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Kumari N, Mathe V, Dongre P. Albumin nanoparticles conjugates binding with glycan - A strategic approach for targeted drug delivery. Int J Biol Macromol 2019; 126:74-90. [DOI: 10.1016/j.ijbiomac.2018.12.184] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/04/2018] [Accepted: 12/21/2018] [Indexed: 12/28/2022]
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41
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Sterjova M, Džodić P, Makreski P, Duatti A, Risteski M, Janevik-Ivanovska E. Vibrational spectroscopy as a tool for examination to the secondary structure of metal-labeled trastuzumab immunoconjugates. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06450-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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de la O-Cuevas E, Badillo-Ramírez I, Islas SR, Araujo-Andrade C, Saniger JM. Sensitive Raman detection of human recombinant interleukin-6 mediated by DCDR/GERS hybrid platforms. RSC Adv 2019; 9:12269-12275. [PMID: 35515877 PMCID: PMC9063685 DOI: 10.1039/c9ra01396b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 04/08/2019] [Indexed: 12/13/2022] Open
Abstract
Recombinant human interleukin-6 (IL-6) is a key cytokine that plays an important role in the immune system and inflammatory response, explaining why any modification of its concentration in biological fluids is considered a signal of a pathological condition. Therefore, it is important to develop alternative, highly sensitive and reliable analytical methodologies to detect and identify this analyte in biological fluids. Herein, we present a proof of concept for the development of a new analytical hybrid platform for IL-6 detection that is based on the combination of drop-coating deposition Raman (DCDR) spectroscopy and graphene-enhanced Raman spectroscopy (GERS) effects. The sensitivity limits for IL-6 detection were found to be a function of the type of substrate used. When a 1 μL droplet of IL-6 solution is deposited and dried on an Si substrate, a DCDR effect occurs, and a detection limit below 1 ng mL−1 is obtained; however, when the same is performed using a hybrid substrate of reduced graphene oxide and silicon (rGO/Si), the joint action of DCDR and GERS effects results in a detection limit well below 1 pg mL−1. It is important to note that this result implies the absolute mass detection of 1 fg of IL-6. In summary, the Raman spectroscopy DCDR/GERS analytical platform proposed here allows the reliable identification of, as well as the very sensitive detection of, IL-6 and promises to improve the performance of clinical evaluations of this biomarker that are currently in use. In this study, the Raman spectra of IL-6 in powder and solution, together with the corresponding band assignment, are presented for the first time in the literature. An analytical hybrid platform combining DCDR and GERS effects is presented. An absolute mass detection of 1 fg of IL-6 was reached.![]()
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Affiliation(s)
- Emmanuel de la O-Cuevas
- Unidad Académica de Física de La Universidad Autónoma de Zacatecas
- 98068 Zacatecas
- Mexico
- Instituto de Ciencias Aplicadas y Tecnología
- Universidad Nacional Autónoma de México
| | - Isidro Badillo-Ramírez
- Instituto de Ciencias Aplicadas y Tecnología
- Universidad Nacional Autónoma de México
- 04510 Ciudad de México
- Mexico
| | - Selene R. Islas
- Instituto de Ciencias Aplicadas y Tecnología
- Universidad Nacional Autónoma de México
- 04510 Ciudad de México
- Mexico
| | - C. Araujo-Andrade
- Unidad Académica de Física de La Universidad Autónoma de Zacatecas
- 98068 Zacatecas
- Mexico
| | - José M. Saniger
- Instituto de Ciencias Aplicadas y Tecnología
- Universidad Nacional Autónoma de México
- 04510 Ciudad de México
- Mexico
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Tertiş M, Melinte G, Ciui B, Şimon I, Ştiufiuc R, Săndulescu R, Cristea C. A Novel Label Free Electrochemical Magnetoimmunosensor for Human Interleukin-6 Quantification in Serum. ELECTROANAL 2018. [DOI: 10.1002/elan.201800620] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mihaela Tertiş
- Department of Analytical Chemistry; Faculty of Pharmacy; Iuliu Haţieganu University of Medicine and Pharmacy; 4 Louis Pasteur St 400349 Cluj-Napoca Romania
| | - Gheorghe Melinte
- Department of Analytical Chemistry; Faculty of Pharmacy; Iuliu Haţieganu University of Medicine and Pharmacy; 4 Louis Pasteur St 400349 Cluj-Napoca Romania
| | - Bianca Ciui
- Department of Analytical Chemistry; Faculty of Pharmacy; Iuliu Haţieganu University of Medicine and Pharmacy; 4 Louis Pasteur St 400349 Cluj-Napoca Romania
| | - Ioan Şimon
- Department of Surgery IV; CFR Hospital; Iuliu Haţieganu University of Medicine and Pharmacy; 18 Republicii St Cluj-Napoca Romania
| | - Rareş Ştiufiuc
- Department of Pharmaceutical Physics&Biophysics; Faculty of Pharmacy; Iuliu Haţieganu University and Pharmacy; 6 Louis Pasteur St 400349 Cluj-Napoca Romania
- MedFuture Research Center for Advanced Medicine; Iuliu Haţieganu University and Pharmacy; 4-6 Louis Pasteur St 400349 Cluj-Napoca Romania
| | - Robert Săndulescu
- Department of Analytical Chemistry; Faculty of Pharmacy; Iuliu Haţieganu University of Medicine and Pharmacy; 4 Louis Pasteur St 400349 Cluj-Napoca Romania
| | - Cecilia Cristea
- Department of Analytical Chemistry; Faculty of Pharmacy; Iuliu Haţieganu University of Medicine and Pharmacy; 4 Louis Pasteur St 400349 Cluj-Napoca Romania
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Facile and inexpensive fabrication of zinc oxide based bio-surfaces for C-reactive protein detection. Sci Rep 2018; 8:12687. [PMID: 30140055 PMCID: PMC6107546 DOI: 10.1038/s41598-018-30793-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/02/2018] [Indexed: 12/26/2022] Open
Abstract
The paper reports a biosensor formed from antibody coated ZnO nano-crystals which has been prepared using a rapid and inexpensive fabrication method which utilises colloidal dispersion enhanced using sonication. This technique was used to prepare highly ordered and uniform nano-crystalline sensor surfaces on polyethylene terephthalate (PET) using 0.5%, 1% and 5% concentrations of zinc oxide nano-crystal suspensions. Impedance spectroscopy was employed to interrogate the sensor surfaces and confirmed high reproducibility of the fabrication process. Changes in impedance values, at a frequency of 138 Hz, were used to establish dose dependent responses for C-reactive protein (CRP) antigen. A limit of detection of less than 1 ng/ml was demonstrated for nano-surfaces fabricated from concentrations of 1% ZnO.
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45
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Herrington WF, Singh GP, Wu D, Barone PW, Hancock W, Ram RJ. Optical Detection of Degraded Therapeutic Proteins. Sci Rep 2018; 8:5089. [PMID: 29572496 PMCID: PMC5865131 DOI: 10.1038/s41598-018-23409-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/01/2018] [Indexed: 11/09/2022] Open
Abstract
The quality of therapeutic proteins such as hormones, subunit and conjugate vaccines, and antibodies is critical to the safety and efficacy of modern medicine. Identifying malformed proteins at the point-of-care can prevent adverse immune reactions in patients; this is of special concern when there is an insecure supply chain resulting in the delivery of degraded, or even counterfeit, drug product. Identification of degraded protein, for example human growth hormone, is demonstrated by applying automated anomaly detection algorithms. Detection of the degraded protein differs from previous applications of machine-learning and classification to spectral analysis: only example spectra of genuine, high-quality drug products are used to construct the classifier. The algorithm is tested on Raman spectra acquired on protein dilutions typical of formulated drug product and at sample volumes of 25 µL, below the typical overfill (waste) volumes present in vials of injectable drug product. The algorithm is demonstrated to correctly classify anomalous recombinant human growth hormone (rhGH) with 92% sensitivity and 98% specificity even when the algorithm has only previously encountered high-quality drug product.
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Affiliation(s)
- William F Herrington
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States.
| | - Gajendra P Singh
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - Di Wu
- Northeastern University, Boston, Massachusetts, 02115, United States
| | - Paul W Barone
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
| | - William Hancock
- Northeastern University, Boston, Massachusetts, 02115, United States
| | - Rajeev J Ram
- Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, United States
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46
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Influence of antibody immobilization strategies on the analytical performance of a magneto-elastic immunosensor for Staphylococcus aureus detection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1232-1239. [DOI: 10.1016/j.msec.2017.03.107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 03/12/2017] [Indexed: 12/12/2022]
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47
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Reyes M, Piotrowski M, Ang SK, Chan J, He S, Chu JJH, Kah JCY. Exploiting the Anti-Aggregation of Gold Nanostars for Rapid Detection of Hand, Foot, and Mouth Disease Causing Enterovirus 71 Using Surface-Enhanced Raman Spectroscopy. Anal Chem 2017; 89:5373-5381. [PMID: 28414218 DOI: 10.1021/acs.analchem.7b00066] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Enterovirus 71 (EV71) is a major public health threat that requires rapid point-of-care detection. Here, we developed a surface-enhanced Raman spectroscopy (SERS)-based scheme that utilized protein-induced aggregation of colloidal gold nanostars (AuNS) to rapidly detect EV71 without the need for fabricating a solid substrate, Raman labels or complicated sample handling. We used AuNS (hydrodynamic diameter, DH of 105.12 ± 1.13 nm) conjugated to recombinant scavenger receptor class B, member 2 (SCARB2) protein with known affinity to EV71. In the absence of EV71, AuNS-SCARB2 aggregated in biological media and produced four enhanced Raman peaks at 390, 510, 670, and 910 cm-1. In the presence of EV71, the three peaks at 510, 670, and 910 cm-1 disappeared, while the peak at 390 cm-1 diminished in intensity as the virus bound to AuNS-SCARB2 and prevented them from aggregation. These three peaks (510, 670, and 910 cm-1) were potential markers for specific detection of EV71 as their disappearance was not observable with a different dengue virus (DENV) as our control. Furthermore, the Raman measurements from colloidal SERS were more sensitive in probing the aggregation of AuNS-SCARB2 for detecting the presence of EV71 in protein-rich samples compared to UV-vis spectrum measurements. With this facile "anti-aggregation" approach, we were able to detect EV71 in protein-rich biological medium within 15 min with reasonable sensitivity of 107 pfu/mL and minimal sample preparation, making this translatable for point-of-care applications.
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Affiliation(s)
- Miguel Reyes
- Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, Blk EA, #03-09, Singapore 117575
| | - Marek Piotrowski
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences , Niezapominajek 8, 30-239 Krakow, Poland
- International Iberian Nanotechnology Laboratory , Avenida Mestre José Veiga, 4715-330 Braga, Portugal
| | - Swee Kim Ang
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore , 5 Science Drive 2, Blk MD4, Level 5, Singapore 117597
| | - Jingqi Chan
- Temasek Junior College , 22 Bedok South Road, Singapore 469278
| | - Shuai He
- Department of Biomedical Engineering, National University of Singapore , 4 Engineering Drive 3, Blk E4, #04-08, Singapore 117583
| | - Justin Jang Hann Chu
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore , 5 Science Drive 2, Blk MD4, Level 5, Singapore 117597
| | - James Chen Yong Kah
- Department of Biomedical Engineering, National University of Singapore , 4 Engineering Drive 3, Blk E4, #04-08, Singapore 117583
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences (CeLS) , #05-01, 28 Medical Drive, Singapore 117456
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48
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Joseph D, Rodriguez RD, Verma A, Pousaneh E, Zahn DRT, Lang H, Chandra S. Electrochemistry and surface-enhanced Raman spectroscopy of CTAB modulated interactions of magnetic nanoparticles with biomolecules. RSC Adv 2017. [DOI: 10.1039/c6ra26235j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
In this study, cyclic voltammetry was used to unearth the electrochemical behavior of MNPs/CTAB and their interaction with biomolecules whereas SERS provided an insight into the mode of interaction in these molecular associations.
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Affiliation(s)
- Delina Joseph
- Department of Chemistry
- Sunandan Divatia School of Science
- NMIMS University
- Mumbai-400056
- India
| | - Raul D. Rodriguez
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Physics
- Semiconductor Physics
- 09107 Chemnitz
| | - Akash Verma
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Physics
- Semiconductor Physics
- 09107 Chemnitz
| | - Elaheh Pousaneh
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Dietrich R. T. Zahn
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Physics
- Semiconductor Physics
- 09107 Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Sudeshna Chandra
- Department of Chemistry
- Sunandan Divatia School of Science
- NMIMS University
- Mumbai-400056
- India
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Menti C, Henriques JAP, Missell FP, Roesch-Ely M. Antibody-based magneto-elastic biosensors: potential devices for detection of pathogens and associated toxins. Appl Microbiol Biotechnol 2016; 100:6149-6163. [DOI: 10.1007/s00253-016-7624-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 11/29/2022]
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50
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Ghatak SK, Sen S, Majumdar D, Singha A, Sen K. Peanut proteins in periodate specific anion sensing: An ensuing reduction in allergic response. Food Chem 2016; 197 Pt B:1286-91. [DOI: 10.1016/j.foodchem.2015.11.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 10/16/2015] [Accepted: 11/07/2015] [Indexed: 10/22/2022]
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