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Li D, Jiang R, Li J, Liu Z, Ahmed YZ, Zhao Q, Song Y, Li M. Modification of the electrokinetic motion of microalgae through light illumination for viability assessment. Electrophoresis 2024. [PMID: 38738699 DOI: 10.1002/elps.202400040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/06/2024] [Accepted: 04/24/2024] [Indexed: 05/14/2024]
Abstract
The viability detection of microalgae with the electrokinetic (EK) technique shows vast applications in the biology and maritime industry. However, due to the slight variations in the EK properties between alive and dead microalgae cells, the accuracy and practicability of this technique is limited. In this paper, the light illumination pretreatment was conducted to modify the EK velocity of microalgae for enhancing the EK difference. The effects of the illumination time and light color on the EK velocities of Chlorella vulgaris and Isochrysis galbana were systematically measured, and the EK differences between alive and dead cells were calculated and compared. The results indicate that under light illumination, the photosynthesis of the alive cells leads to the amplification of the zeta potential, leading toward increase in the EK difference along with the illumination time. By using light with different color spectra to treat the microalgae, it was found that the EK difference changes with the light color according to the following order: white light > red light > blue light > green light. The difference in EK potential with exposure to white light treatment surpasses over 10-fold in comparison to those without such treatment. The light pretreatment technique, as illustrated in this study, offers an advantageous strategy to enhance the EK difference between living and dead cells, proving beneficial in the field of microalgae biotechnology.
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Affiliation(s)
- Deyu Li
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
| | - Rui Jiang
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
| | - Jun Li
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Zhen Liu
- Department of New Energy, Voyah Technology Co., Ltd., Wuhan, P. R. China
| | - Yasmeen Zamir Ahmed
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
| | - Qiankun Zhao
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
| | - Yongxin Song
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
| | - Mengqi Li
- Department of Marine Engineering, Dalian Maritime University, Dalian, P. R. China
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Saha S, Bhattacharjee S, Chowdhury J. Exploring the binding interactions of janus green blue with serum albumins from spectroscopic and calorimetric studies aided by in silico calculations. J Biomol Struct Dyn 2021; 40:5328-5344. [PMID: 33410370 DOI: 10.1080/07391102.2020.1870156] [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] [Indexed: 10/22/2022]
Abstract
Binding interactions of the phenazinium dye Janus green blue (JGB) with human and bovine serum albumins (BSA - and BSA) have been explored for the first time from multi-spectroscopic and calorimetric measurements aided by in silico calculations. The formation of ground state complexes between JGB and the respective serum albumins have been suggested from the UV-Vis and steady-state fluorescence spectroscopic studies. The nonlinear Stern Volmer (SV) plots at higher concentrations of JGB primarily indicate the formation of more than one ground state complexes in BSA -/BSA-JGB systems. Modified SV plots and isothermal titration calorimetry (ITC) studies however signify the possibilities of one type of binding complexes between HSA/BSA - JGB systems. Binding constants and the thermodynamic parameters associated with the HSA/BSA-JGB complexes have also been estimated from the ITC studies. Förster distances (R0) for HSA-JGB and BSA-JGB complexes are estimated from Förster resonance energy transfer (FRET) results. Variations in the micro-environment of the Tyr and Trp residues of the serum proteins in presence of JGB have been observed from the synchronous fluorescence measurements. The conformational changes in the protein structures induced by the dye JGB have been revealed from 3 D fluorescence and circular dichroism (CD) studies. The experimental observations are supported by in silico calculations. This in depth investigation on the interactions of serum albumins with JGB may provide the fundamental information toward exploring the therapeutic efficacy of JGB as a potent drug molecule. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Saumen Saha
- Department of Physics, Jadavpur University, Kolkata, India
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ZHU C, ZHAO XY, YANG G, QU F. Capillary Electrophoresis Involving in High Efficiency Screening for Aptamers. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [PMCID: PMC7219368 DOI: 10.1016/s1872-2040(20)60014-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Systematic evolution of ligands by exponential enrichment (SELEX) is a universal technology for aptamer' screening. Accurate and efficient screening methods and strategy design are the key to success. This review briefly summarizes capillary electrophoresis (CE) involving in the efficient screening for aptamers in our group since 2007, including the application of CE in pre-screening, screening and post-screening process, classification and screening strategies against different protein targets, multiple screening modes, and screening for multi-scale targets. Finally, combined with the current progresses of aptamer screening, some remaining issues are discussed and the development prospects are proposed.
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Zhang W, Li N, Zeng H, Nakajima H, Lin JM, Uchiyama K. Inkjet Printing Based Separation of Mammalian Cells by Capillary Electrophoresis. Anal Chem 2017; 89:8674-8677. [DOI: 10.1021/acs.analchem.7b02624] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Weifei Zhang
- Department of Applied
Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Nan Li
- Department
of Chemistry, Beijing Key Laboratory of Microanalytical Methods and
Instrumentation, The Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Hulie Zeng
- Department of Applied
Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Hizuru Nakajima
- Department of Applied
Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
| | - Jin-Ming Lin
- Department
of Chemistry, Beijing Key Laboratory of Microanalytical Methods and
Instrumentation, The Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Katsumi Uchiyama
- Department of Applied
Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
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Khan AY, Saha B, Kumar GS. Interaction of phenazinium dyes with double-stranded poly(A): spectroscopy and isothermal titration calorimetry studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:615-624. [PMID: 24861262 DOI: 10.1016/j.saa.2014.04.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/19/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
A comprehensive study on the binding of phenazinium dyes viz. janus green B, indoine blue, safranine O and phenosafranine with double stranded poly(A) using various spectroscopic and calorimetric techniques is presented. A higher binding of janus green B and indoine blue over safranine O and phenosafranine to poly(A) was observed from all experiments. Intercalative mode of binding of the dyes was inferred from fluorescence polarization anisotropy, iodide quenching and viscosity experiments. Circular dichroism study revealed significant perturbation of the secondary structure of poly(A) on binding of these dyes. Results from isothermal titration calorimetry experiments suggested that the binding was predominantly entropy driven with a minor contribution of enthalpy to the standard molar Gibbs energy. The results presented here may open new opportunities in the application of these dyes as RNA targeted therapeutic agents.
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Affiliation(s)
- Asma Yasmeen Khan
- Biophysical Chemistry Laboratory, Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Baishakhi Saha
- Biophysical Chemistry Laboratory, Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India.
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Chatterjee S, Kumar GS. Targeting the heme proteins hemoglobin and myoglobin by janus green blue and study of the dye–protein association by spectroscopy and calorimetry. RSC Adv 2014. [DOI: 10.1039/c4ra06600f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The binding of the phenazinium dye janus green blue (JGB) to two heme proteins, hemoglobin (Hb) and myoglobin (Mb), was studied by biophysical and microcalorimetry techniques.
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Affiliation(s)
- Sabyasachi Chatterjee
- Biophysical Chemistry Laboratory
- Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory
- Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700 032, India
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Optimization of Quantum Dots system of CdTe and Transferrin by Capillay Electrophoresis-Laser Inductive Fluorescence and Verification in Cell Labeling. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1016/s1872-2040(13)60657-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhang L, Qu F, Hu M, Ding J, Lou B. Capillary zone electrophoresis-based cytotoxicity analysis of Caco-2 cells. Electrophoresis 2012; 33:834-40. [DOI: 10.1002/elps.201100382] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lu Zhang
- School of Life Science, Beijing Institute of Technology; Beijing; China
| | - Feng Qu
- School of Life Science, Beijing Institute of Technology; Beijing; China
| | - Meiling Hu
- School of Life Science, Beijing Institute of Technology; Beijing; China
| | - Jinmei Ding
- School of Life Science, Beijing Institute of Technology; Beijing; China
| | - Beilei Lou
- School of Life Science, Beijing Institute of Technology; Beijing; China
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Affiliation(s)
- Matthew Geiger
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Amy L. Hogerton
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
| | - Michael T. Bowser
- University of Minnesota, Department of Chemistry, 207
Pleasant Street South East, Minneapolis, Minnesota 55455, United States
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Affiliation(s)
- Yuqing Lin
- Department of Chemistry, University of Gothenburg, S-41296, Gothenburg, Sweden
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