1
|
Yu S, Zhang M, Guo Y, Zhang L. Serum Leucine Aminopeptidase Activity Patterns Across Various Disease States: Potential Implications for Bleeding and Thrombosis Risk. Thromb Haemost 2024. [PMID: 39009008 DOI: 10.1055/a-2365-8601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
BACKGROUND Disruptions in the pathways for activating and deactivating proteases in the bloodstream can lead to thrombosis and bleeding issues. Leucine aminopeptidases (LAPs), which are exopeptidases essential for regulating protein and peptide activities, are recognized as clinical biomarkers for liver diseases. However, the relationship between serum LAP activity and the risks of bleeding or thrombosis, as well as the identification of the specific tissues or organs that control LAP levels, is not well understood. METHODS We performed a retrospective study to evaluate serum LAP activities in 149,360 patients with 47 different diseases and 9,449 healthy individuals. The analysis was conducted using SPSS V2.6, RStudio V.1.3.1073, and libraries in Python 3.8. RESULTS Our research revealed that 21 of the 47 diseases studied showed increased median serum LAP activities, while 26 diseases were associated with significantly lower activities, especially those related to thrombosis. Furthermore, most diseases were found to have an increased risk of bleeding and thrombosis, indicated by higher Q25 and lower Q75 LAP activities compared to the control group. Receiver operating characteristic curve analysis confirmed the effectiveness of LAP activities as biomarkers for specific conditions like hepatic encephalopathy, liver cancer, pancreatitis, and pancreatic cancer. Diseases were categorized into clusters with similar bleeding or thrombotic tendencies through principal component analysis. CONCLUSION This study highlighted regulatory influence of the liver and pancreas on LAP levels. The established link between serum LAP concentrations and the risk of bleeding or thrombosis paved the way for the development of diagnostic and preventative approaches for various medical conditions.
Collapse
Affiliation(s)
- Sha Yu
- Department of Obstetrics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Systems Biology and Medicine Center for Complex Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Meng Zhang
- Systems Biology and Medicine Center for Complex Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Clinical Laboratory, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yachong Guo
- Nanjing Drum Tower Hospital, Kuang Yaming Honors School, Nanjing University, Nanjing, China
| | - Lijuan Zhang
- Systems Biology and Medicine Center for Complex Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Diagnosis, American Institute of Translational Medicine and Therapeutics, Missouri, United States
| |
Collapse
|
2
|
Li ZJ, Wang CY, Xu L, Zhang ZY, Tang YH, Qin TY, Wang YL. Recent Progress of Activity-Based Fluorescent Probes for Imaging Leucine Aminopeptidase. BIOSENSORS 2023; 13:752. [PMID: 37504150 PMCID: PMC10377407 DOI: 10.3390/bios13070752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023]
Abstract
Leucine aminopeptidase (LAP) is an important protease that can specifically hydrolyze Leucine residues. LAP occurs in microorganisms, plants, animals, and humans and is involved in a variety of physiological processes in the human body. In the physiological system, abnormal levels of LAP are associated with a variety of diseases and pathological processes, such as cancer and drug-induced liver injury; thus, LAP was chosen as the early biochemical marker for many physiological processes, including cancer. Considering the importance of LAP in physiological and pathological processes, it is critical that high-efficiency and dependable technology be developed to monitor LAP levels. Herein, we summarize the organic small molecule fluorescence/chemiluminescence probes used for LAP detection in recent years, which can image LAP in cancer, drug-induced liver injury (DILI), and bacteria. It can also reveal the role of LAP in tumors and differentiate the serum of cirrhotic, drug-induced liver injury and normal models.
Collapse
Affiliation(s)
- Ze-Jun Li
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Cai-Yun Wang
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Liang Xu
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Zhen-Yu Zhang
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Ying-Hao Tang
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Tian-Yi Qin
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
- One Health Institute, Hainan University, Haikou 570228, China
| | - Ya-Long Wang
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
- One Health Institute, Hainan University, Haikou 570228, China
| |
Collapse
|
3
|
Sun R, Wu X, Mao Y, Wang H, Bian C, Lv P, Zhao Z, Li X, Fu W, Lu J, Cao Z. A facile turn-on chemiluminescence probe for sensitive imaging on aminopeptidase N activity. LUMINESCENCE 2022; 37:1335-1342. [PMID: 35671536 DOI: 10.1002/bio.4302] [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: 05/12/2022] [Revised: 06/04/2022] [Accepted: 06/04/2022] [Indexed: 11/09/2022]
Abstract
Aminopeptidase N, as a target for drug discovery, shows remarkable relationship with many diseases, especially liver injury and cancer. Herein, we explored a chemiluminescence (CL) probe for sensing APN by tethering APN-specific substrate group to the ortho-acrylated phenoxy-dioxetane scaffold. In this manner, two CL probes (APN-CL and BAPN-CL) were designed with non-capped leucine and butoxy-carbonyl capped leucine as the protecting group to preserve the chemiexcitation energy. The uncovered leucine was demonstrated to be essential for detection of APN activity by comparing the CL intensity of two CL probes. Probe APN-CL was turned on upon APN cleavage, resulting in a high chemiluminescent emission, while the chemiexcitation energy of probe BAPN-CL was still restrained even with the high-level APN. The result was elucidated by molecular docking simulation in further. Probe APN-CL exhibited fast response and high sensitivity with a detection limit of 0.068 U/L, and an excellent specificity for the discrimination of APN from biological ions, small molecules and other proteases commonly found in living system. By virtue of good stability and cell viability, probe APN-CL imaged abnormal level of APN in tumor cells and tumor-bearing mice. Moreover, this probe APN-CL could be easily used to evaluate APN inhibitors and APN level in plasma samples from 20 patients. Overall, as a facile and cost-effective probe, APN-CL will be a promising alternative in the early diagnosis of pathologies and cost-effective screening on inhibitors.
Collapse
Affiliation(s)
- Ru Sun
- Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, P. R. China
| | - Xuesong Wu
- China State Institute of Pharmaceutical Industry, Shanghai, P. R. China
| | - Yanjia Mao
- China State Institute of Pharmaceutical Industry, Shanghai, P. R. China
| | - Hongbo Wang
- China State Institute of Pharmaceutical Industry, Shanghai, P. R. China
| | - Chong Bian
- Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Panpan Lv
- Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Zhen Zhao
- Minhang Branch, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Xinwei Li
- Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, P. R. China
| | - Wei Fu
- Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, P. R. China
| | - Jianzhong Lu
- Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, P. R. China
| | - Zhijuan Cao
- Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, P. R. China
| |
Collapse
|
4
|
Xu W, Wang J, Xu C, Hua J, Wang Y. A diketopyrrolopyrrole-based ratiometric fluorescent probe for endogenous leucine aminopeptidase detecting and imaging with specific phototoxicity in tumor cells. J Mater Chem B 2021; 9:8842-8850. [PMID: 34647119 DOI: 10.1039/d1tb01480c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Leucine aminopeptidase (LAP) is a vital proteolytic enzyme, and its overexpression is often associated with many physiological diseases, such as liver dysfunction and breast cancer. Therefore, the accurate measurement of LAP concentrations in cells is critical for the diagnosis and prevention of related diseases. Herein, a new ratiometric fluorescent probe, DPP-Leu, based on diketopyrrolopyrrole (DPP) was designed and synthesized for LAP detection based on the specific enzymatic cleavage of the N-terminal leucine residue. The fluorescence intensity ratio of DPP-Leu (I548/I651) showed a remarkable change in the presence of LAP, with a limit of detection of 0.011 U L-1, and DPP-Leu was successfully applied to detect LAP in fetal bovine serum (FBS) and artificial urine. Cell imaging experiments revealed that DPP-Leu could target mitochondria and distinguish tumor cells with high LAP content from normal cells. Importantly, benefiting from the structural transformation of DPP-Leu to the photosensitizer 4 under LAP catalysis, the probe could kill tumor cells under light irradiation without damaging normal cells.
Collapse
Affiliation(s)
- Weibo Xu
- Department of Oncology, Shanghai Medical College, Fudan University, Yixueyuan Road 138, Shanghai 200032, P. R. China. .,Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P. R. China
| | - Jian Wang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China. .,The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Rd., Shanghai 200234, P. R. China
| | - Chenyang Xu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China.
| | - Jianli Hua
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, P. R. China.
| | - Yu Wang
- Department of Oncology, Shanghai Medical College, Fudan University, Yixueyuan Road 138, Shanghai 200032, P. R. China. .,Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, P. R. China
| |
Collapse
|
5
|
Tao L, Liu S, Xia X, Chai Y, Cai S, Liu H, Lu C, Ma C, Nie J, Zeng F, Sun Q, Mao W, Yang G, Ren J, Wang F. Near-infrared fluorescent read-out probe for ultra-sensitive imaging of leucine aminopeptidase in vitro and in vivo. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132449] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
6
|
Yang Y, Zhang L, Li J, Wang J, Cao T, Zheng L, Cao Y, Qin W, Liu Y. In vivo imaging via a red-emitting fluorescent probe to diagnosing liver cancer or drug-induced liver disease. Anal Chim Acta 2021; 1168:338621. [PMID: 34051991 DOI: 10.1016/j.aca.2021.338621] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/21/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
Leucine aminopeptidase (LAP) as an important proteolytic enzyme, has been mainly found in hepatobiliary cells, and overexpressed in hepatoma cells. Herein, a new highly selective red-emitting fluorescent probe (DCDHF-Ala) for LAP has been synthesized based on 2-dicyanomethyldiene-3-cyano-2, 5-dihydrofuran (DCDHF) as fluorophore, and alanine (Ala) as the detection group. More importantly, it's the first time to use Ala as a reactive group for LAP. DCDHF-Ala has a low detection limit (0.20 U/L), excellent water solubility and cell membrane permeability. In addition, the probe has been successfully applied to fluorescent imaging in cells and zebrafish. It's especially worth mentioning that, DCDHF-Ala has a high biosafety and enables a real-time detection of LAP levels in mice model. What's the most important is that DCDHF-Ala may be an effective tool to qualitatively monitor the upregulation of LAP induced by liver injury and liver cancer.
Collapse
Affiliation(s)
- Yuexia Yang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Liang Zhang
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, 400037, PR China
| | - Jiajun Li
- State Key Laboratory of Veterinary Etiological Biology and Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu Province, 730046, PR China
| | - Jiemin Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Ting Cao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Lei Zheng
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Yuping Cao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Wenwu Qin
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
| | - Yun Liu
- Department of Radiology, Xinqiao Hospital, Army Medical University, Chongqing, 400037, PR China.
| |
Collapse
|
7
|
Balamurugan TST, Chen GZ, Kumaravel S, Lin CM, Huang ST, Lee YC, Chen CH, Luo GR. Electrochemical substrate for active profiling of cellular surface leucine aminopeptidase activity and drug resistance in cancer cells. Biosens Bioelectron 2020; 150:111948. [PMID: 31929085 DOI: 10.1016/j.bios.2019.111948] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/18/2019] [Accepted: 12/02/2019] [Indexed: 11/26/2022]
Abstract
Leucine aminopeptidase (LAP) is an essential proteolytic enzyme and potential biomarker for liver malignancy. Overexpression of LAP is directly linked with some fatal physiological and pathological disorders. In this regard, we have designed an activity based electrochemical substrate leucine-benzyl ferrocene carbamate (Leu-FC) for selective profiling of LAP activity in live cells. In practice, LAP instantaneously hydrolyze the Leu residue of the substrate Leu-FC to eliminate the unmasked electrochemical reporter amino ferrocene via predefined self-immolative cascade. The electrochemical signal is distinctly specific for LAP and free of other electroactive biological interference. The substrate Leu-FC empowered sensor displayed broad dynamic range with admirable detection limits. On top of this, the probe Leu-FC was employed in real-time active profiling of cellular LAP activity in HepG2 cells and effect of LAP inhibitor. In extent, the substrate Leu-FC can effectively monitor cisplatin induced overexpression of LAP activity in HepG2 cells in presence and absence of bestatin. The sensor showcased an excellent reliability towards monitoring cellular LAP activity in HepG2 cells. Unlike the traditional antibody-based immunoassays, our approach is capable of monitoring in-situ activity of LAP in live cells.
Collapse
Affiliation(s)
- T S T Balamurugan
- Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| | - Guan-Zhong Chen
- Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| | - Sakthivel Kumaravel
- Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| | - Chun-Mao Lin
- Department of Biochemistry, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Sheng-Tung Huang
- Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| | - Yu-Chieh Lee
- Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, 11031, Taiwan.
| | - Ching-Hui Chen
- Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, 11031, Taiwan.
| | - Guo-Rong Luo
- Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| |
Collapse
|
8
|
Huang Y, Qi Y, Zhan C, Zeng F, Wu S. Diagnosing Drug-Induced Liver Injury by Multispectral Optoacoustic Tomography and Fluorescence Imaging Using a Leucine-Aminopeptidase-Activated Probe. Anal Chem 2019; 91:8085-8092. [DOI: 10.1021/acs.analchem.9b00107] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yong Huang
- State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yu Qi
- State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chenyue Zhan
- State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Fang Zeng
- State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shuizhu Wu
- State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| |
Collapse
|
9
|
Guo D, Gan ZF, Jiang L, Cao MF, Patrice FT, Hafez ME, Li DW. Detection of leucine aminopeptidase activity in serum using surface-enhanced Raman spectroscopy. Analyst 2019; 144:1394-1400. [DOI: 10.1039/c8an02182a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A specific reaction-based SERS approach was developed for the selective and sensitive detection of leucine aminopeptidase activity in serum.
Collapse
Affiliation(s)
- Dan Guo
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhen-Fei Gan
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Lei Jiang
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Mao-Feng Cao
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Fato Tano Patrice
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Mahmoud Elsayed Hafez
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Da-Wei Li
- Key Laboratory for Advanced Materials
- Joint International Laboratory for Precision Chemistry & School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| |
Collapse
|
10
|
Huang S, Wu Y, Zeng F, Chen J, Wu S. A turn-on fluorescence probe based on aggregation-induced emission for leucine aminopeptidase in living cells and tumor tissue. Anal Chim Acta 2018; 1031:169-177. [DOI: 10.1016/j.aca.2018.05.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/28/2018] [Accepted: 05/10/2018] [Indexed: 12/11/2022]
|
11
|
Gattu S, Crihfield CL, Lu G, Bwanali L, Veltri LM, Holland LA. Advances in enzyme substrate analysis with capillary electrophoresis. Methods 2018; 146:93-106. [PMID: 29499329 PMCID: PMC6098732 DOI: 10.1016/j.ymeth.2018.02.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/01/2018] [Accepted: 02/05/2018] [Indexed: 02/06/2023] Open
Abstract
Capillary electrophoresis provides a rapid, cost-effective platform for enzyme and substrate characterization. The high resolution achievable by capillary electrophoresis enables the analysis of substrates and products that are indistinguishable by spectroscopic techniques alone, while the small volume requirement enables analysis of enzymes or substrates in limited supply. Furthermore, the compatibility of capillary electrophoresis with various detectors makes it suitable for KM determinations ranging from nanomolar to millimolar concentrations. Capillary electrophoresis fundamentals are discussed with an emphasis on the separation mechanisms relevant to evaluate sets of substrate and product that are charged, neutral, and even chiral. The basic principles of Michaelis-Menten determinations are reviewed and the process of translating capillary electrophoresis electropherograms into a Michaelis-Menten curve is outlined. The conditions that must be optimized in order to couple off-line and on-line enzyme reactions with capillary electrophoresis separations, such as incubation time, buffer pH and ionic strength, and temperature, are examined to provide insight into how the techniques can be best utilized. The application of capillary electrophoresis to quantify enzyme inhibition, in the form of KI or IC50 is detailed. The concept and implementation of the immobilized enzyme reactor is described as a means to increase enzyme stability and reusability, as well as a powerful tool for screening enzyme substrates and inhibitors. Emerging techniques focused on applying capillary electrophoresis as a rapid assay to obtain structural identification or sequence information about a substrate and in-line digestions of peptides and proteins coupled to mass spectrometry analyses are highlighted.
Collapse
Affiliation(s)
- Srikanth Gattu
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Cassandra L Crihfield
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Grace Lu
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Lloyd Bwanali
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Lindsay M Veltri
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States
| | - Lisa A Holland
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506, United States.
| |
Collapse
|
12
|
Applications of capillary electrophoresis with chemiluminescence detection in clinical, environmental and food analysis. A review. Anal Chim Acta 2016; 913:22-40. [PMID: 26944987 DOI: 10.1016/j.aca.2016.01.046] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 12/28/2022]
Abstract
This paper reviews the latest developments and analytical applications of chemiluminescence detection coupled to capillary electrophoresis (CE-CL). Different sections considering the most common CL systems have been included, such as the tris(2,2'-bipyridine)ruthenium(II) system, the luminol and acridinium derivative reactions, the peroxyoxalate CL or direct oxidations. Improvements in instrumental designs, new strategies for improving both resolution and sensitivity, and applications in different fields such as clinical, pharmaceutical, environmental and food analysis have been included. This review covers the literature from 2010 to 2015.
Collapse
|
13
|
Kašička V. Recent developments in capillary and microchip electroseparations of peptides (2013-middle 2015). Electrophoresis 2015; 37:162-88. [DOI: 10.1002/elps.201500329] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 08/25/2015] [Accepted: 08/25/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Václav Kašička
- Institute of Organic Chemistry and Biochemistry, v.v.i; The Czech Academy of Sciences; Prague Czech Republic
| |
Collapse
|