1
|
Yang H, Lin Y, Mo Q, Li Z, Yang F, Li X. Monitoring Enzymatic Reaction Kinetics and Activity Assays in Confined Nanospace. Anal Chem 2024. [PMID: 39024010 DOI: 10.1021/acs.analchem.4c01901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Enzyme-mediating biotransformations commonly occur in micro- and nanospace, which is crucial to maintain the essential biochemical processes and physiological functions in living systems. Probing enzyme-catalytic reactions in a biomimetic fashion remains challenging due to the lack of competent tools and methodology. Here, we show that studying enzymatic reaction kinetics can be readily achieved by a well-designed solid-state nanopore. Using tyrosine as a classical substrate, we quantitatively characterize the catalytic activity of tyrosinase (TYR) and tyrosine decarboxylase (TDC) in a nanoconfined space. Tyrosine was first immobilized in the nanopipette, wherein the active sites of tyrosine were left unoccupied. When successively exposed to TYR and TDC, a two-step cascade reaction can spontaneously take place. In this process, the surface wettability and charge of the nanopipette stemming from the catalytic products can sensitively regulate ion transport and ionic current rectification behavior, which were monitored by ionic current signal. In this biomimetic scenario, we obtained the enzymatic reaction kinetics of monophenyl oxidase that were not previously actualized in the conventional macroenvironment. Significantly, TYR showed higher enzyme activity, with a Km value of 1.59 mM, which was lower than that measured in a free and open space (with a Km of 3.01 mM). This suggests that tyrosine should be the most appropriate substrate of TYR, thus improving our understanding of tyrosine-associated biochemical reactions. This work offers an applicable technical platform to mimic enzyme-mediated biotransformations and biometabolisms.
Collapse
Affiliation(s)
- Huiping Yang
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Yinning Lin
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Qian Mo
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Zhaoquan Li
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Fan Yang
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- State Key Laboratory of Targeting Oncology, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Xinchun Li
- Guangxi Key Laboratory of Pharmaceutical Precision Detection and Screening, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- Key Laboratory of Micro-Nanoscale Bioanalysis and Drug Screening of Guangxi Education Department, Pharmaceutical College, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
- State Key Laboratory of Targeting Oncology, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| |
Collapse
|
2
|
Liu Y, Qian Y, Fu L, Zhu C, Li X, Wang Q, Ling H, Du H, Zhou S, Kong XY, Jiang L, Wen L. Archaea-Inspired Switchable Nanochannels for On-Demand Lithium Detection by pH Activation. ACS CENTRAL SCIENCE 2024; 10:469-476. [PMID: 38435527 PMCID: PMC10906035 DOI: 10.1021/acscentsci.3c01179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 03/05/2024]
Abstract
With the rapid development of the lithium ion battery industry, emerging lithium (Li) enrichment in nature has attracted ever-growing attention due to the biotoxicity of high Li levels. To date, fast lithium ion (Li+) detection remains urgent but is limited by the selectivity, sensitivity, and stability of conventional technologies based on passive response processes. In nature, archaeal plasma membrane ion exchangers (NCLX_Mj) exhibit Li+-gated multi/monovalent ion transport behavior, activated by different stimuli. Inspired by NCLX_Mj, we design a pH-controlled biomimetic Li+-responsive solid-state nanochannel system for on-demand Li+ detection using 2-(2-hydroxyphenyl)benzoxazole (HPBO) units as Li+ recognition groups. Pristine HPBO is not reactive to Li+, whereas negatively charged HPBO enables specific Li+ coordination under alkaline conditions to decrease the ion exchange capacity of nanochannels. On-demand Li+ detection is achieved by monitoring the decline in currents, thereby ensuring precise and stable Li+ recognition (>0.1 mM) in the toxic range of Li+ concentration (>1.5 mM) for human beings. This work provides a new approach to constructing Li+ detection nanodevices and has potential for applications of Li-related industries and medical services.
Collapse
Affiliation(s)
- Yang Liu
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Yongchao Qian
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Lin Fu
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Congcong Zhu
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Xin Li
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Qingchen Wang
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Haoyang Ling
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Huaqing Du
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Shengyang Zhou
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Xiang-Yu Kong
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
- Suzhou
Institute for Advanced Research, University
of Science and Technology of China, Suzhou, Jiangsu 215123, P. R. China
| | - Lei Jiang
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
| | - Liping Wen
- CAS
Key Laboratory of Bio-inspired Materials and Interfacial Science,
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
- School
of Future Technology, University of Chinese
Academy of Sciences, Beijing 100049, P. R.
China
- Suzhou
Institute for Advanced Research, University
of Science and Technology of China, Suzhou, Jiangsu 215123, P. R. China
| |
Collapse
|
3
|
Yang Y, Zhao H, Li Y, Chen Y, Wang Z, Wu W, Hu L, Zhu J. Tuning the Photochromism of Spiropyran in Functionalized Nanoporous Silica Nanoparticles for Dynamic Anticounterfeiting Applications. ACS OMEGA 2023; 8:16459-16470. [PMID: 37179600 PMCID: PMC10173341 DOI: 10.1021/acsomega.3c01604] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023]
Abstract
Here, we report a novel invisible ink with different decay times based on thin films with different molar ratios of spiropyran (SP)/Si, which allows the encryption of messages over time. Nanoporous silica has been found to be an excellent substrate to improve the solid photochromism of spiropyran, but the hydroxyl groups of silica have a serious effect on fade speeds. The density of silanol groups in silica has an influence on the switching behavior of spiropyran molecules, as they stabilize the amphiphilic merocyanine isomers and thus slow down the fading process from the open to the closed form. Here, we investigate the solid photochromic behavior of spiropyran by sol-gel modification of the silanol groups and explore its potential application in UV printing and dynamic anticounterfeiting. To extend its applications, spiropyran is embedded in organically modified thin films prepared by the sol-gel method. Notably, by using the different decay times of thin films with different SP/Si molar ratios, time-dependent information encryption can be realized. It provides an initial "false" code, which does not display the required information, and only after a given time will the encrypted data appear.
Collapse
Affiliation(s)
- Yuhui Yang
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
- Department
of Polymer Materials, Zhejiang Sci-Tech
University, Hangzhou 310018, China
- Institute
of Smart Biomedical Materials, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Huimin Zhao
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Yuqing Li
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Yilong Chen
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Zhaohui Wang
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Wei Wu
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Leilei Hu
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| | - Jiangkun Zhu
- College
of Materials Science and Engineering, Zhejiang
Sci-Tech University, Hangzhou 310018, China
| |
Collapse
|
4
|
Chen Z, He Q, Deng X, Peng J, Du K, Sun Y. Engineering solid nanochannels with macrocyclic host-guest chemistry for stimuli responses and molecular separations. Chem Commun (Camb) 2023; 59:1907-1916. [PMID: 36688813 DOI: 10.1039/d2cc06562b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Biological channels in the cell membrane play a critical role in the regulation of signal transduction and transmembrane transport. Researchers have been committed to building biomimetic nanochannels to imitate the above significant biological processes. Unlike the fragile feature of biological channels, numerous solid nanochannels have aroused extensive interests for their controllable chemical properties on the surface and superior mechanical properties. Surface functionalization has been confirmed to be vital to determine the properties of solid nanochannels. Macrocyclic hosts (e.g., the crown ethers, cyclodextrins, calix[n]arenes, cucurbit[n]urils, pillar[n]arenes, and trianglamine) can be tailored to the interior surface of the nanochannels with the performance of stimuli response and separation. Macrocycles have good reversibility and high selectivity toward specific ions or molecules, promoting functionalies of solid nanochannels. Hence, the combination of macrocyclic hosts and solid nanochannels is conducive to taking both advantages and achieving applications in functional nanochannels (e.g., membranes separations, biosensors, and smart devices). In this review, the most recent advances in nanochannel membranes decorated by macrocyclic host-guest chemistry are briefed. A variety of macrocyclic hosts-based responsive nanochannels are organized (e.g., the physical stimuli and specific molecules or ions stimuli) and nanochannels are separated (e.g., water purifications, enantimerseparations, and organic solvent nanofiltration), respectively. Hopefully, this review can enlighten on how to effectively build functional nanochannels and facilitate their practical applications in membrane separations.
Collapse
Affiliation(s)
- Zhao Chen
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Qiang He
- Hubei Key Laboratory of Catalysis and Materials Science, College of Chemistry and Material Sciences, South-Central University for Nationalities, Wuhan, 430074, China
| | - Xiaowen Deng
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Jiehai Peng
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China.
| | - Kui Du
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China.
| | - Yue Sun
- State Key Laboratory of Separation Membrane and Membrane Process & Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry, Tiangong University, Tianjin 300387, China.
| |
Collapse
|
5
|
Pan X, Wang Q, Ma Z, Qin Y, Lu X, Jin W, Zhu Y. Assisting Role of Water Molecules in Ionic Recognition by 18-Crown-6 Ether in Aqueous Solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|