1
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Hu F, Zhang C, Liu Z, Xie X, Zhao X, Luo Y, Fu J, Li B, Hu C, Su Z, Yu Z. Photoswitchable and long-lived seven-membered cyclic singlet diradicals for the bioorthogonal photoclick reaction. Chem Sci 2023; 14:13254-13264. [PMID: 38023496 PMCID: PMC10664533 DOI: 10.1039/d3sc03675h] [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: 07/18/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Annularly 1,3-localized singlet diradicals are energetic and homolytic intermediates, but commonly too short-lived for widespread utilization. Herein, we describe a direct observation of a long-lived and seven-membered singlet diradical, oxepine-3,6-dione-2,7-diyl (OXPID), via spectroscopic experiments and also theoretical evidence from computational studies, which is generated via photo-induced ring-expansion of 2,3-diaryl-1,4-naphthoquinone epoxide (DNQO). The photo-generated OXPID reverts to the thermally stable σ-bonded DNQO with t1/2 in the μs level, thus constituting a novel class of T-type molecular photoswitches with high light-energy conversion efficiency (η = 7.8-33%). Meanwhile, the OXPID is equilibrated to a seven-membered cyclic 1,3-dipole as an electronic tautomer that can be captured by ring-strained dipolarophiles with an ultrafast cycloaddition rate (k2CA up to 109 M-1 s-1). The T-type photoswitchable DNQO is then exploited to be a highly selective and recyclable photoclick reagent, enabling spatiotemporal-resolved bioorthogonal ligation on living cell membranes via a tailored DNQO-Cy3 probe.
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Affiliation(s)
- Fuqiang Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Cefei Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zhihao Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xinyu Xie
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Xiaohu Zhao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Yanju Luo
- Analytical & Testing Center, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Jielin Fu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Baolin Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
| | - Zhipeng Yu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
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2
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Song Y, Wang L, Xu T, Zhang G, Zhang X. Emerging open-channel droplet arrays for biosensing. Natl Sci Rev 2023; 10:nwad106. [PMID: 38027246 PMCID: PMC10662666 DOI: 10.1093/nsr/nwad106] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/23/2022] [Accepted: 12/07/2022] [Indexed: 12/01/2023] Open
Abstract
Open-channel droplet arrays have attracted much attention in the fields of biochemical analysis, biofluid monitoring, biomarker recognition and cell interactions, as they have advantages with regard to miniaturization, parallelization, high-throughput, simplicity and accessibility. Such droplet arrays not only improve the sensitivity and accuracy of a biosensor, but also do not require sophisticated equipment or tedious processes, showing great potential in next-generation miniaturized sensing platforms. This review summarizes typical examples of open-channel microdroplet arrays and focuses on diversified biosensing integrated with multiple signal-output approaches (fluorescence, colorimetric, surface-enhanced Raman scattering (SERS), electrochemical, etc.). The limitations and development prospects of open-channel droplet arrays in biosensing are also discussed with regard to the increasing demand for biosensors.
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Affiliation(s)
- Yongchao Song
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
- Intelligent Wearable Engineering Research Center of Qingdao, Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Lirong Wang
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Tailin Xu
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Guangyao Zhang
- Intelligent Wearable Engineering Research Center of Qingdao, Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Xueji Zhang
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
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3
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Xie X, Hu F, Zhou Y, Liu Z, Shen X, Fu J, Zhao X, Yu Z. Photoswitchable Oxidopyrylium Ylide for Photoclick Reaction with High Spatiotemporal Precision: A Dynamic Switching Strategy to Compensate for Molecular Diffusion. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202300034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Xinyu Xie
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Fuqiang Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhihao Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xin Shen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Jielin Fu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohu Zhao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhipeng Yu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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4
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Xie X, Hu F, Zhou Y, Liu Z, Shen X, Fu J, Zhao X, Yu Z. Photoswitchable Oxidopyrylium Ylide for Photoclick Reaction with High Spatiotemporal Precision: A Dynamic Switching Strategy to Compensate for Molecular Diffusion. Angew Chem Int Ed Engl 2023; 62:e202300034. [PMID: 36825842 DOI: 10.1002/anie.202300034] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/15/2023] [Accepted: 02/23/2023] [Indexed: 02/25/2023]
Abstract
We describe a novel type of photoclick reaction between 2,3-diaryl indenone epoxide (DIO) and ring-strained dipolarophiles, in which DIO serves as a P-type photoswitch to produce mesoionic oxidopyrylium ylide (PY) to initiate an ultra-fast [5+2] cycloaddition (k2hν =1.9×105 M-1 s-1 ). The photoisomerization between DIO and PY can be tightly controlled by either 365 or 520 nm photo-stimulation, which allows reversion or regeneration of the reactive PY dipole on demand. Thus, this reversible photoactivation was exploited to increase the chemoselectivity of the [5+2] cycloaddition in complex environments via temporal dual-λ stimulation sequences and to recycle the DIO reagent for batch-wise protein conjugation. A dynamic photoswitching strategy is also proposed to compensate for molecular diffusion of PY in aqueous solution, enhancing the spatial resolution of lithographic surface decoration and bioorthogonal labeling on living cells via a spatiotemporal dual-λ photo-modulation.
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Affiliation(s)
- Xinyu Xie
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Fuqiang Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhihao Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xin Shen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Jielin Fu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaohu Zhao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhipeng Yu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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5
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Handrea-Dragan IM, Botiz I, Tatar AS, Boca S. Patterning at the micro/nano-scale: Polymeric scaffolds for medical diagnostic and cell-surface interaction applications. Colloids Surf B Biointerfaces 2022; 218:112730. [DOI: 10.1016/j.colsurfb.2022.112730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 11/27/2022]
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6
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Cao L, Wu L, Li C, Tu Y, Wu H, Shen B, Meng J, Hao X, Yan B, Li F, Xia F, Huang Y. Underwater
Superoleophobic‐Oleophilic
Chips for Femtomolar Aflatoxins Identification. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Liwei Cao
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Lizhen Wu
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Cheng Li
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Yidan Tu
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano‐Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry China University of Geosciences Wuhan 430074 China
| | - Hao Wu
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Bin Shen
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Jianxin Meng
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
| | - Xin‐Qi Hao
- School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China
| | - Bing Yan
- School of Environmental Studies China University of Geosciences Wuhan 430074 China
| | - Feng‐yu Li
- College of Chemistry and Materials Science Jinan University Guangzhou 510632 China
- School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano‐Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry China University of Geosciences Wuhan 430074 China
- Zhejiang Institute China University of Geosciences Hangzhou 311305 China
| | - Yu Huang
- State Key Laboratory of Biogeology and Environmental Geology, Engineering Research Center of Nano‐Geomaterials of Ministry of Education, Faculty of Material Science and Chemistry China University of Geosciences Wuhan 430074 China
- Zhejiang Institute China University of Geosciences Hangzhou 311305 China
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7
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Azizov S, Sharipov M, Lim JM, Tawfik SM, Kattaev N, Lee YI. Solvent-resistant microfluidic paper-based analytical device/spray mass spectrometry for quantitative analysis of C 18 -ceramide biomarker. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4611. [PMID: 32789982 DOI: 10.1002/jms.4611] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
We developed a highly efficient and low-cost organic solvents-resistant microfluidic paper-based analytical device (μPAD) coupled with paper spray mass spectrometry (PS-MS) for quantitative determination of C18 -ceramide as a prognostic biomarker for several diseases. Several models of μPAD patterns have been examined to select the most resistant and efficient microchannel barriers, which can provide continuous spray at ionization zone and prevent "coffee ring" effect. Moreover, the developed μPAD has enabled the analysis of low concentration of C18 -ceramide because of the maximum supply of deposited analyte through microchannel. The MS results confirmed the formation of doubly and singly charged metal ion complexes between ceramide and different metal ions. Notably, the complexation that occurs between lithium ions and C18 -ceramide showed a high relative abundance compared with other formed complexes. Taking into account the relative abundance of complex [Cer + Li]+ at 572.8 m/z, it can be considered as a stable ion and therefore be used for the analysis of C18 -ceramide at low concentrations. Complexation of C18 -ceramide and lithium confirmed with quantum chemical calculations. The proposed method represents good linearity with a regression coefficient of 0.9956 for the analysis of C18 -ceramide and reaches a limit of detection to 0.84 nM. It has been adapted successfully for practical application in human serum samples with high recovery values in range of 92%-105%. The developed μPAD-MS technique provides clear advantages by reducing the experimental steps and simplifying the operation process and enables to identify subnanomolar concentration of C18 -ceramide in human serum samples.
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Affiliation(s)
- Shavkatjon Azizov
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Mirkomil Sharipov
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Jae-Min Lim
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Salah M Tawfik
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Nuritdin Kattaev
- Department of Chemistry, National University of Uzbekistan, Tashkent, 100174, Uzbekistan
| | - Yong-Ill Lee
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
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8
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Humenik M, Winkler A, Scheibel T. Patterning of protein-based materials. Biopolymers 2020; 112:e23412. [PMID: 33283876 DOI: 10.1002/bip.23412] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 01/03/2023]
Abstract
Micro- and nanopatterning of proteins on surfaces allows to develop for example high-throughput biosensors in biomedical diagnostics and in general advances the understanding of cell-material interactions in tissue engineering. Today, many techniques are available to generate protein pattern, ranging from technically simple ones, such as micro-contact printing, to highly tunable optical lithography or even technically sophisticated scanning probe lithography. Here, one focus is on the progress made in the development of protein-based materials as positive or negative photoresists allowing micro- to nanostructured scaffolds for biocompatible photonic, electronic and tissue engineering applications. The second one is on approaches, which allow a controlled spatiotemporal positioning of a single protein on surfaces, enabled by the recent developments in immobilization techniques coherent with the sensitive nature of proteins, defined protein orientation and maintenance of the protein activity at interfaces. The third one is on progress in photolithography-based methods, which allow to control the formation of protein-repellant/adhesive polymer brushes.
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Affiliation(s)
- Martin Humenik
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Bayreuth, Germany
| | - Anika Winkler
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Bayreuth, Germany
| | - Thomas Scheibel
- Department of Biomaterials, Faculty of Engineering Science, Universität Bayreuth, Bayreuth, Germany.,Bayreuth Center for Colloids and Interfaces (BZKG), Universität Bayreuth, Bayreuth, Germany.,Bayreuth Center for Molecular Biosciences (BZMB), Universität Bayreuth, Bayreuth, Germany.,Bayreuth Center for Material Science (BayMAT), Universität Bayreuth, Bayreuth, Germany.,Bavarian Polymer Institute (BPI), Universität Bayreuth, Bayreuth, Germany
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9
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Feng N, Hu J, Ma Q, Ju H. Mass spectrometric biosensing: Quantitation of multiplex enzymes using single mass probe and fluorous affinity chip. Biosens Bioelectron 2020; 157:112159. [DOI: 10.1016/j.bios.2020.112159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/02/2020] [Accepted: 03/17/2020] [Indexed: 01/12/2023]
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10
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Çelikbıçak Ö, Hamaloğlu KÖ, Salih B, Pişkin E. Following hybridization on sensor/array platforms by using SPR, elipsometer and MALDI-MS. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2020; 39:1057-1072. [PMID: 32397925 DOI: 10.1080/15257770.2020.1750635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of this study is to develop a methodology in which Surface Plasmon Resonance (SPR), Ellipsometer (EM) and Matrix-Assisted Laser Desorption/Ionization-Mass Spectrometry (MALDI-MS) will be used together for detection of single-strand oligodeoxynucleotides (ssODNs) targets. A selected target-ssODNs, and its complementary, the probe-ssODNs carrying a -SH end group, a spacer arm (HS-(CH2)6-(T)15, and a non-complementary ssODNs were used. Silicone based stamps with 16 regions were prepared and used for micro-contact printing (µCP) of the probe-ssODNs on the gold coated surfaces homogeneously. A modulator-spacer molecule (6-mercapto-1-hexanol) was co-immobilized to control surface probe density, to orientate the probe-ssODNs, and to eliminate the nonspecific interactions. SPR was used successfully to follow the hybridization of the target-ssODNs with the immobilized probe-ssODNs on the platform surfaces. Complete hybridizations were achieved in 100 min. It was obtained that there was a linear relationship between relative change in delta and target concentration below 1 µm. Using imaging version of ellipsometer (IEM) allowed imaging of the surfaces and supported extra datum for the SPR results. After a very simple dehybridization protocol, MALDI-MS analysis allowed detection of the target-ssODNs hybridized on the sensor/array platforms.
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Affiliation(s)
- Ömür Çelikbıçak
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | | | - Bekir Salih
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Erhan Pişkin
- Nanobiyomedtek, Cyberpark, Bilkent, Ankara, Turkey
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11
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Wang Y, Li Y, Zhang Y, Ren K, Ju H, Liu Y. Express and sensitive detection of multiple miRNAs via DNA cascade reactors functionalized photonic crystal array. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9712-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Tucker B, Hermann M, Mainguy A, Oleschuk R. Hydrophobic/hydrophilic patterned surfaces for directed evaporative preconcentration. Analyst 2020; 145:643-650. [DOI: 10.1039/c9an01782h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We present a microfluidic platform that rapidly deposits many samples and preconcentrates them, making it suitable for a wide range of high-throughput detection schemes.
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Affiliation(s)
- Ben Tucker
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | | | - Alexa Mainguy
- Department of Chemistry
- Queen's University
- Kingston
- Canada
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13
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High-Performance Sample Substrate of Gold Nanoparticle Multilayers for Surface-Assisted Laser Desorption/Ionization Mass Spectrometry. NANOMATERIALS 2019; 9:nano9081078. [PMID: 31357575 PMCID: PMC6723548 DOI: 10.3390/nano9081078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/21/2019] [Accepted: 07/23/2019] [Indexed: 01/13/2023]
Abstract
The development of a sample substrate with superior performance for desorption and ionization of analyte is the key issue to ameliorate the quality of mass spectra for measurements of small molecules in surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS). Herein, the homogeneous sample substrate of gold nanoparticle multilayers (AuNPs-ML) with hexagonal lattice was successfully prepared by self-assembly technique. With strong surface plasmon resonance absorption and superior photothermal effect, the sample substrate of AuNPs-ML exhibited high signal sensitivity and low background noise for the detection of model analyte of glucose without additional matrixes in SALDI-MS. Furthermore, compared to merchant matrixes of α-cyano-4-hydroxycinnamic acid (CHCA) and 2,5-dihydroxybenzoic acid (DHB), the sample substrate of AuNPs-ML was demonstrated to ameliorate the quality of mass spectra, including signal strength, background interference and signal/noise (S/N) ratio. The sucrose and tryptophan were also measured to show the extensive applications of AuNPs-ML sample substrate for the detections of small molecules in SALDI-MS. Most importantly, the remarkable reproducibility of glucose mass spectra with relative signal of 7.3% was obtained by the use of AuNPs-ML sample substrate for SALDI-MS. The homogeneous sample substrate of AuNPs-ML greatly improved the quality of mass spectra because of its strong absorption of laser energy, low specific heat, high heat conductivity and extraordinary homogeneity. We believe that AuNPs-ML could be a practical sample substrate for small molecule detection in SALDI-MS.
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14
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Choi H, Lee D, Kim Y, Nguyen HQ, Han S, Kim J. Effects of Matrices and Additives on Multiple Charge Formation of Proteins in MALDI-MS Analysis. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1174-1178. [PMID: 31044356 DOI: 10.1007/s13361-019-02213-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
The sinapinic acid (SA) matrix has frequently been used for protein analysis in matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS). However, the SA matrix does not result in the formation of distinctive multiple protein charge states, whereas the 2-nitrophloroglucinol (2-NPG) matrix is capable of this. The formation of multiple charge states in the MALDI-MS analysis of proteins is advantageous in that it results in higher accuracy. In this study, the mass spectra of several common standard proteins, namely cytochrome c, myoglobin, bovine serum albumin (BSA), and immunoglobulin G (IgG), were compared using various matrices (2,5-dihydroxybenzoic acid, α-cyano-hydroxycinnamic acid, SA, and 2-NPG). Furthermore, the mass spectra of two large standard proteins (BSA and IgG) using various acid additives (H3PO4, HNO3, H2SO4, HCl, and trifluoroacetic acid) with the 2-NPG matrix were also compared. Among the different matrices, 2-NPG provided the broadest range of multiple protein charge states, while, among the different additives, the 2-NPG matrix in combination with HCl generated the broadest multiple charge states as well as the most intense protein peaks.
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Affiliation(s)
- Hyemin Choi
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Dabin Lee
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Yeoseon Kim
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Huu-Quang Nguyen
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Sol Han
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Jeongkwon Kim
- Department of Chemistry, Chungnam National University, Daejeon, Republic of Korea.
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15
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Xu T, Xu LP, Zhang X, Wang S. Bioinspired superwettable micropatterns for biosensing. Chem Soc Rev 2019; 48:3153-3165. [DOI: 10.1039/c8cs00915e] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The bioinspired micropatterns exhibit outstanding capacity in controlling and patterning microdroplets, which have offered new functionalities and possibilities towards a wide variety of emerging biological and biomedical applications.
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Affiliation(s)
- Tailin Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- University of Science & Technology Beijing
- Beijing 100083
- P. R. China
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen
| | - Shutao Wang
- Key Laboratory of Bio-inspired Materials and Interface Science
- CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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16
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Wang X, Li N, Xu D, Yang X, Zhu Q, Xiao D, Lu N. Superhydrophobic candle soot/PDMS substrate for one-step enrichment and desalting of peptides in MALDI MS analysis. Talanta 2018; 190:23-29. [PMID: 30172504 DOI: 10.1016/j.talanta.2018.07.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 07/10/2018] [Accepted: 07/19/2018] [Indexed: 12/27/2022]
Abstract
Superhydrophobic substrate is applied in matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) detection due to its confinement effect. The weak interaction of superhydrophobic surface with water/salts makes it potential in one-step enrichment and desalting of peptide in MALDI MS analysis. We fabricate a superhydrophobic substrate by spin-coating poly(dimethyl siloxane) (PDMS) on a candle soot layer. On this substrate, the peptide analytes can be confined and enriched in a small area due to the confinement effect and its strong hydrophobic interactions with PDMS. Meanwhile, the desalting can be easily realized by removing the residual solution after the absorption of analyst molecules due to the weak interaction between water/salt contaminants and the superhydrophobic surface. Using this substrate, angiotensin III (Ang III) in the presence of salt with high concentration (2 M or saturated) can be analyzed, and the peptide sequence coverage of 10 μg/mL myoglobin (MYO) and bovine serum albumin (BSA) digests is enhanced to 51% and 26%, which is 37% and 21% analyzed with the commercial ZipTipC18 pipette tips. The LOD of bacitracin A (Bac A) in milk with this substrate is 100 pM and nearly 360 times lower than the LOD of standard testing method. This substrate has potential practical applications in proteomics research and actual sample analysis.
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Affiliation(s)
- Xueyun Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Ning Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Daren Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Xiangchao Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Qunyan Zhu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Dongyang Xiao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Nan Lu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China.
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17
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Han X, Xie Y, Wu Q, Wu S. A novel protein digestion method with the assistance of alternating current denaturation for high efficient protein digestion and mass spectrometry analysis. Talanta 2018; 184:382-387. [PMID: 29674058 DOI: 10.1016/j.talanta.2018.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/01/2018] [Accepted: 03/07/2018] [Indexed: 12/24/2022]
Abstract
Protein denaturation has always displayed a huge necessity for mass spectrometry (MS)-based protein identification methods in proteomics. In this research, a novel protein digestion method with the assistance of alternating current (AC) denaturation has been proposed and evaluated. In this method, merely, 200 mM ammonium bicarbonate buffer solution (pH, 8.2) was used to dissolve proteins and act as the electrolyte, and protein denaturation could be achieved in several seconds. For apo-transferrin, ovalbumin and bovine serum albumin that are resistant to digestion in their native states, confident amino acid sequence coverage by matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) analysis were obtained after 200 v AC denaturation. The applicability of this method was further investigated via analyzing a rat liver proteome sample using nano reversed phase liquid chromatography-electrospray ionization-tandem mass spectrometry (nanoRPLC-ESI-MS/MS). As a result, 458 proteins were identified which is comparable to the in-solution digestion via 8 M urea denaturation (375 proteins). All these results demonstrated that AC denaturation could offer an efficient assistance for a clean and high-throughput digestion in the individual level and proteome level.
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Affiliation(s)
- Xiaoxun Han
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road No. 11, Huangshi 435002, China
| | - Yiming Xie
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road No. 11, Huangshi 435002, China
| | - Qin Wu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road No. 11, Huangshi 435002, China
| | - Shuaibin Wu
- Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road No. 11, Huangshi 435002, China.
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18
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Zhu L, Liu Q, Yang B, Ju H, Lei J. Pixel Counting of Fluorescence Spots Triggered by DNA Walkers for Ultrasensitive Quantification of Nucleic Acid. Anal Chem 2018; 90:6357-6361. [DOI: 10.1021/acs.analchem.8b01146] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Longyi Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Qihui Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Bangyu Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
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