1
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Wang Z, Zhang Y, Aweya JJ, Lin Z, Yao D, Zheng Z. The histidine phosphatase LHPP of Penaeus vannamei is involved in shrimp hemocytes apoptosis. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2023; 5:100109. [PMID: 37448875 PMCID: PMC10336261 DOI: 10.1016/j.fsirep.2023.100109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 06/11/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
LHPP (Phospholysine Phosphohistidine Inorganic Pyrophosphate Phosphatase) is a protein histidine phosphatase that modulates a hidden posttranslational modification called histidine phosphorylation. LHPP also acts as a tumor suppressor, which plays a pivotal role in various cellular processes. However, whether LHPP participates in the regulation of invertebrate's immunity is still unknown. Here we characterized a LHPP homolog in P. vannamei (designated PvLHPP), with a 807 bp length of open reading frame (ORF) encoding a putative protein of 268 amino acids. Sequence analysis revealed that PvLHPP contains a typical hydrolase 6 and hydrolase-like domain, which was conserved from invertebrate to vertebrate. PvLHPP was ubiquitously expressed in tissues and induced in hemocyte and hepatopancreas by Vibrio parahaemolyticus, Streptococcus iniae and white spot syndrome virus (WSSV) challenge, indicating that PvLHPP participated in the immune responses. Moreover, silencing of PvLHPP followed by V. parahaemolyticus inhibited hemocyte apoptosis. This study enriches our current insight on shrimp immunity, and provides novel perspective to understand immune-regulatory role of PvLHPP.
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Affiliation(s)
- Zhongyan Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Yueling Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
- STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Jude Juventus Aweya
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Zhongyang Lin
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Defu Yao
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Zhihong Zheng
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
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2
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Zhang M, He S, Han X, Cui J, Wang H, Huo X, Yan F, Feng L, Wang C, Ma X. Discovery of Potential Antituberculosis Agents Targeted Methionine Aminopeptidase 1 of Mycobacterium tuberculosis by the Developed Fluorescent Probe. Anal Chem 2023; 95:16210-16215. [PMID: 37899593 DOI: 10.1021/acs.analchem.3c02952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Tuberculosis (TB) is a chronic systemic infectious disease caused by Mycobacterium tuberculosis (M. tuberculosis). Methionine aminopeptidase 1 (MtMET-AP1) is a hydrolase that mediates the necessary post-translational N-terminal methionine excision (NME) of peptides during protein synthesis, which is necessary for bacterial proliferation and is a potential target for the treatment of tuberculosis. Based on the functional characteristics of MtMET-AP1, we developed an enzymatic activated near-infrared fluorescent probe DDAN-MT for rapid, highly selective, and real-time monitoring of endogenous MtMET-AP1 activity in M. tuberculosis. Using the probe DDAN-MT, a visually high-throughput screening technique was established, which obtained three potential inhibitors (GSK-J4 hydrochchloride, JX06, and lavendustin C) against MtMET-AP1 from a 2560 compounds library. More importantly, these inhibitors could inhibit the growth of M. tuberculosis H37Ra especially (MICs < 5 μM), with low toxicities on intestinal bacteria strains and human cells. Therefore, the visual sensing of MtMET-AP1 was successfully performed by DDAN-MT, and MtMET-AP1 inhibitors were discovered as potential antituberculosis agents.
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Affiliation(s)
- Ming Zhang
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Shengui He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiuyan Han
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Honglei Wang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Xiaokui Huo
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Fei Yan
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Lei Feng
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Chao Wang
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian Medical University, Dalian 116044, China
| | - Xiaochi Ma
- Second Affiliated Hospital, Dalian Medical University, Dalian 116044, China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
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3
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Wang Y, Zhang M, Li W, Wang Y, Zhou P. Theoretical Investigation on the "ON-OFF" Mechanism of a Fluorescent Probe for Thiophenols: Photoinduced Electron Transfer and Intramolecular Charge Transfer. Molecules 2023; 28:6921. [PMID: 37836764 PMCID: PMC10574459 DOI: 10.3390/molecules28196921] [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: 08/16/2023] [Revised: 09/29/2023] [Accepted: 09/30/2023] [Indexed: 10/15/2023] Open
Abstract
In this study, the sensing mechanism of (2E,4E)-5-(4-(dimethylamino)phenyl)-1-(2-(2,4dinitrophenoxy)phenyl)penta-2,4-dien-1-one (DAPH-DNP) towards thiophenols was investigated by density functional theory (DFT) and time-dependent DFT (TD-DFT). The DNP group plays an important role in charge transfer excitation. Due to the typical donor-excited photo-induced electron transfer (d-PET) process, DAPH-DNP has fluorescence quenching behavior. After the thiolysis reaction between DAPH-DNP and thiophenol, the hydroxyl group is released, and DAPH is generated with the reaction showing strong fluorescence. The fluorescence enhancement of DAPH is not caused by an excited-state intramolecular proton transfer (ESIPT) process. The potential energy curves (PECs) show that DAPH-keto is less stable than DAPH-enol. The frontier molecular orbitals (FMOs) of DAPH show that the excitation process is accompanied by intramolecular charger transfer (ICT), and the corresponding character of DAPH was further confirmed by hole-electron and interfragment charge transfer (IFCT) analysis methods. Above all, the sensing mechanism of the turn-on type probe DAPH-DNP towards thiophenol is based on the PET mechanism.
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Affiliation(s)
- Yuxi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; (Y.W.); (M.Z.); (W.L.)
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Meng Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; (Y.W.); (M.Z.); (W.L.)
| | - Wenzhi Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; (Y.W.); (M.Z.); (W.L.)
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; (Y.W.); (M.Z.); (W.L.)
| | - Panwang Zhou
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
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4
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Hu G, Meng X, Zang C, Wang Z, Yang W, Hu Y. Development of a fluorescent probe based on a tricyano structure for the detection of PhSH in environmental and biological samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122943. [PMID: 37269655 DOI: 10.1016/j.saa.2023.122943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 05/21/2023] [Accepted: 05/27/2023] [Indexed: 06/05/2023]
Abstract
In this study, a NIR fluorescent probe based on ICT principles was developed for the detection of phenylthiophenol. An excellent fluorescent mother nucleus is constructed with tricyano groups, and benzenesulfonate was introduced as a specific recognition site for thiophene, which can be used for rapid detection of thiophenol. The probe has a significant Stokes shift (220 nm). Meanwhile, it had rapid response to thiophene and high specificity. The fluorescence intensity of the probe at 700 nm showed a good linear relationship with thiophene concentration in the range of 0 to 100 μM, and the detection limit was as low as 45 nM. The probe had also been successfully applied to the detection of thiophene in real water samples. MTT assay showed low cytotoxicity and excellent fluorescence imaging in live cells.
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Affiliation(s)
- Guoxing Hu
- School of Pharmaceutical Science, Nanjing Tech University, China
| | - Xianteng Meng
- School of Pharmaceutical Science, Nanjing Tech University, China
| | - Chao Zang
- School of Pharmaceutical Science, Nanjing Tech University, China
| | - Zhi Wang
- School of Pharmaceutical Science, Nanjing Tech University, China
| | - Wenge Yang
- School of Pharmaceutical Science, Nanjing Tech University, China.
| | - Yonghong Hu
- College of Food Science and Light Industry, Nanjing Tech University, China.
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5
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Lee D, Lee Y, Hye Shin S, Min Choi S, Hyeon Lee S, Jeong S, Jang S, Kee JM. A simple protein histidine kinase activity assay for high-throughput inhibitor screening. Bioorg Chem 2023; 130:106232. [DOI: 10.1016/j.bioorg.2022.106232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/15/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
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6
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Kim HJ, Jung H, Kim S, Seo JK, Kee JM. Identification of a Target Site for Covalent Inhibition of Protein Phosphohistidine Phosphatase 1. ACS Med Chem Lett 2022; 13:1911-1915. [DOI: 10.1021/acsmedchemlett.2c00450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Hyeong Jun Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Hoyoung Jung
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Soyeon Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Jeong Kon Seo
- UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
- Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Jung-Min Kee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
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7
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Hu G, Wang Z, Yang W, Shen W, Sun W, Xu H, Hu Y. Dicyanisophorone-based near-infrared fluorescent probe for the detection of thiophenol and its application in living cells and actual water samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120984. [PMID: 35151172 DOI: 10.1016/j.saa.2022.120984] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
This article reports a new type of dicyanisophorone-based near-infrared fluorescent probe for the rapid detection of mercaptophenol by introducing 2,4-dinitrobenzene sulfonate group as a specific recognition group for thiophenol. The probe has a significant large Stokes shift (185 nm). At the same time, it exhibits rapid response, high selectivity and high sensitivity to thiophene. In addition, the fluorescence of the probe at 650 nm has a good linear relationship with the concentration of thiophenol in the range of 0-100 μM, and the detection limit is as low as 65 nM. The probe has been successfully applied to the detection of thiophenol in actual water samples, and has good live cell imaging effects, and at the same time shows the superiority of its low cell toxicity.
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Affiliation(s)
- Guoxing Hu
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China
| | - Zhi Wang
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China
| | - Wenge Yang
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China.
| | - Weiliang Shen
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China
| | - Wei Sun
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China
| | - Hanhan Xu
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China
| | - Yonghong Hu
- Nanjing Tech University, No. 30, South Puzhu Road, Nanjing 211816, China.
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8
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Zhang M, Tian Z, Wang J, Tian X, Wang C, Cui J, Huo X, Feng L, Yu Z, Ma X. Visual Analysis and Inhibitor Screening of Leucine Aminopeptidase, a Key Virulence Factor for Pathogenic Bacteria-Associated Infection. ACS Sens 2021; 6:3604-3610. [PMID: 34420297 DOI: 10.1021/acssensors.1c01161] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Leucine aminopeptidase (LAP) is a hydrolase for the hydrolysis of peptides or proteins containing a leucine residue at the N-terminal. It is also known to be a key virulence factor for the pathogenic abilities of various pathogens causing infectious diseases, which indicated a new insight into the diagnosis and therapy of pathogenic infections. A new fluorescent probe (S)-2-amino-N-(4-(((6,8-dichloro-9,9-dimethyl-7-oxo-7,9-dihydroacridin-2-yl)oxy)methyl)phenyl)-4-methylpentanamide (DDBL) containing DDAO as the fluorophore and leucine as the recognition group was developed for LAP. By real-time visual sensing of LAP, six bacteria with LAP expression were identified efficiently from human feces, as well as by sensitive visual analysis using native-PAGE specially stained with DDBL. Furthermore, a high throughput screening system established with DDBL was applied to identify a natural inhibitor (3-acetyl-11-keto-β-boswellic acid, AKBA), which could attenuate mouse sepsis induced by Staphylococcus aureus. Therefore, the visual sensing of LAP by DDBL suggested the application for target bacteria identification and LAP homolog analysis as well as potential inhibitor expounding for treatment of bacterial infections.
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Affiliation(s)
- Ming Zhang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Zhenhao Tian
- School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Jiayue Wang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
- Department of Pharmacy, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Xiangge Tian
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
| | - Chao Wang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiaokui Huo
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
| | - Lei Feng
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Zhenlong Yu
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
| | - Xiaochi Ma
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Integrative Medicine, College of Pharmacy, Dalian 116044, China
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
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9
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Luo J, Zhang H, Guan J, An B, Peng J, Zhu W, Wei N, Zhang Y. Detection of lipase activity in human serum based on a ratiometric fluorescent probe. NEW J CHEM 2021. [DOI: 10.1039/d1nj01155c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CARA can monitor lipase activity through hydrolyzing the ester bond to interrupt the FRET process.
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Affiliation(s)
- Jiajie Luo
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Hongyi Zhang
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Jialiang Guan
- Department of Emergency Internal Medicine
- The Affiliated Hospital of Qingdao University
- Qingdao
- China
| | - Baoshuai An
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Junli Peng
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Wei Zhu
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Ningning Wei
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
| | - Yanru Zhang
- Departments of Pharmacology and Medicinal Chemistry
- Qingdao University School of Pharmacy
- Qingdao 266071
- China
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10
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Ahn S, Jung H, Kee JM. Quest for the Crypto-phosphoproteome. Chembiochem 2020; 22:319-325. [PMID: 33094900 DOI: 10.1002/cbic.202000583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/14/2020] [Indexed: 11/05/2022]
Abstract
Protein phosphorylation is one of the most studied post-translational modifications (PTMs). Despite the remarkable advances in phosphoproteomics, a chemically less-stable subset of the phosphosites, which we call the crypto-phosphoproteome, has remained underexplored due to technological challenges. In this Viewpoint, we briefly summarize the current understanding of these elusive protein phosphorylations and identify the missing pieces for future studies.
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Affiliation(s)
- Seungmin Ahn
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Hoyoung Jung
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Jung-Min Kee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
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11
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Casey GR, Stains CI. A fluorescent probe for monitoring PTP-PEST enzymatic activity. Analyst 2020; 145:6713-6718. [PMID: 32812952 DOI: 10.1039/d0an00993h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Phosphatase non-receptor type 12 (PTPN12 or PTP-PEST) is a critical regulator of cell migration, acting as a tumor suppressor in cancer. Decreases in PTP-PEST expression correlate with aggressive phenotypes in hepatocellular carcinoma (HCC). Despite the importance of PTP-PEST in cellular signaling, methods to directly monitor its enzymatic activity are lacking. Herein, we report the design, synthesis, and optimization of a probe to directly monitor PTP-PEST enzymatic activity via a fluorescent readout. This activity sensor, termed pPEST1tide, is capable of detecting as little as 0.2 nM recombinant PTP-PEST. In addition, we demonstrate that this probe can selectively report on PTP-PEST activity using a panel of potential off-target enzymes. In the long-term, this activity probe could be utilized to identify small molecule modulators of PTP-PEST activity as well as provide a prognostic readout for HCC.
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Affiliation(s)
- Garrett R Casey
- Department of Chemistry, University of Nebraska - Lincoln, Lincoln, NE 68588, USA.
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12
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Ma H, Han XX, Zhao B. Enhanced Raman spectroscopic analysis of protein post-translational modifications. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Hauser A, Hwang S, Sun H, Hackenberger CPR. Combining free energy calculations with tailored enzyme activity assays to elucidate substrate binding of a phospho-lysine phosphatase. Chem Sci 2020; 11:12655-12661. [PMID: 34094459 PMCID: PMC8163145 DOI: 10.1039/d0sc03930f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Studying enzymes that are involved in the regulation of dynamic post-translational modifications (PTMs) is of key importance in proteomics research. Such investigations can be particularly challenging when the modification itself is intrinsically labile. In this article, we elucidate the enzymatic activity of Phospholysine Phosphohistidine Inorganic Pyrophosphate Phosphatase (LHPP) towards different O- and N-phosphorylated peptides by a combined experimental and computational approach. LHPP has been previously described to hydrolyze the phosphoramidate bonds in different small molecule substrates, including phosphorylated lysine (pLys). Taking the instability of the phosphoramidate bond into account, we conducted a carefully adjusted enzymatic assay with various pLys pentapeptides to confirm enzymatic phosphatase activity with LHPP. Molecular docking was employed to explore possible binding poses of the substrates in complex with the enzyme. Molecular dynamics based free energy calculations, which are unique in their accuracy and solid theoretical basis, were further applied to predict relative binding affinity of different substrates. Comparison of simulations with experiments clearly suggested a distinct binding motif of pLys peptides as well as a very narrow promiscuity of LHPP. We believe this integrated approach can be widely adopted to study the structure and interaction of poorly characterized enzyme-substrate complexes, in particular with synthetically challenging or labile substrates.
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Affiliation(s)
- Anett Hauser
- Department of Chemical Biology II, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) Berlin Germany .,Institute for Chemistry, Humboldt-Universität zu Berlin Berlin Germany
| | - Songhwan Hwang
- Group of Structural Chemistry and Computational Biophysics, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) Berlin Germany
| | - Han Sun
- Group of Structural Chemistry and Computational Biophysics, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) Berlin Germany
| | - Christian P R Hackenberger
- Department of Chemical Biology II, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) Berlin Germany .,Institute for Chemistry, Humboldt-Universität zu Berlin Berlin Germany
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14
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McCullough BS, Barrios AM. Fluorogenic probes for imaging cellular phosphatase activity. Curr Opin Chem Biol 2020; 57:34-40. [PMID: 32470893 PMCID: PMC7483602 DOI: 10.1016/j.cbpa.2020.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/26/2020] [Accepted: 04/08/2020] [Indexed: 11/23/2022]
Abstract
The ability to visualize enzyme activity in a cell, tissue, or living organism can greatly enhance our understanding of the biological roles of that enzyme. While many aspects of cellular signaling are controlled by reversible protein phosphorylation, our understanding of the biological roles of the protein phosphatases involved is limited. Here, we provide an overview of progress toward the development of fluorescent probes that can be used to visualize the activity of protein phosphatases. Significant advances include the development of probes with visible and near-infrared (near-IR) excitation and emission profiles, which provides greater tissue and whole-animal imaging capabilities. In addition, the development of peptide-based probes has provided some selectivity for a phosphatase of interest. Key challenges involve the difficulty of achieving sufficient selectivity for an individual member of a phosphatase enzyme family and the necessity of fully validating the best probes before they can be adopted widely.
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Affiliation(s)
- Brandon S McCullough
- Department of Medicinal Chemistry, University of Utah College of Pharmacy, Salt Lake City, UT 84112-0581, USA
| | - Amy M Barrios
- Department of Medicinal Chemistry, University of Utah College of Pharmacy, Salt Lake City, UT 84112-0581, USA.
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15
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Zhang Y, Bai L, Liu F, Zhang Y, Cheng Y, Zhang H, Ba X. A novel fluorescent glycopolymer for endogenous hydrogen peroxide imaging in living cells in a fully aqueous environment. Polym J 2019. [DOI: 10.1038/s41428-019-0290-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Yue Y, Kong Y, Yang F, Zheng Z, Hu X, Guo D. Supramolecular Tandem Assay for Pyridoxal-5'-phosphate by the Reporter Pair of Guanidinocalix[5]Arene and Fluorescein. ChemistryOpen 2019; 8:1437-1440. [PMID: 32071829 PMCID: PMC7011187 DOI: 10.1002/open.201900316] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/18/2019] [Indexed: 11/23/2022] Open
Abstract
Guanidinocalix[5]arene and fluorescein reporter pair has been chosen to set up a supramolecular tandem assay principle based on the differential recognition of pyridoxal-5'-phosphate (the substrate of alkaline phosphatase, ALP), pyridoxal (the product of ALP) and phosphate (the product of ALP). This supramolecular tandem assay system offers an opportunity to monitor the activity of ALP in a label-free, continuous, and real-time manner. More importantly, a calibration curve can be given for selective and quantitative detection of pyridoxal-5'-phosphate (biomarker for several diseases).
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Affiliation(s)
- Yu‐Xin Yue
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Tianjin Key Laboratory of Biosensing and Molecular RecognitionNankai UniversityTianjin300071P. R. China
| | - Yong Kong
- Research Institute of Petroleum Engineering, SinopecBeijing100101P. R. China
| | - Fan Yang
- Research Institute of Petroleum Engineering, SinopecBeijing100101P. R. China
| | - Zhe Zheng
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Tianjin Key Laboratory of Biosensing and Molecular RecognitionNankai UniversityTianjin300071P. R. China
| | - Xin‐Yue Hu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Tianjin Key Laboratory of Biosensing and Molecular RecognitionNankai UniversityTianjin300071P. R. China
| | - Dong‐Sheng Guo
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education), Tianjin Key Laboratory of Biosensing and Molecular RecognitionNankai UniversityTianjin300071P. R. China
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Jung H, Choi Y, Lee D, Seo JK, Kee JM. Distinct phosphorylation and dephosphorylation dynamics of protein arginine kinases revealed by fluorescent activity probes. Chem Commun (Camb) 2019; 55:7482-7485. [PMID: 31184653 DOI: 10.1039/c9cc03285a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Protein arginine (Arg) phosphorylation regulates stress responses and virulence in bacteria. With fluorescent activity probes, we show that McsB, a protein Arg kinase, can dephosphorylate phosphoarginine (pArg) residues to produce ATP from ADP, implicating the dynamic control of protein pArg levels by the kinase even without a phosphatase.
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Affiliation(s)
- Hoyoung Jung
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
| | - Yigun Choi
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
| | - Donghee Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
| | - Jeong Kon Seo
- UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Jung-Min Kee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
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