1
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Wu J, Tan Z, Pistolozzi M, Tan W. Rivastigmine-Bambuterol Hybrids as Selective Butyrylcholinesterase Inhibitors. Molecules 2023; 29:72. [PMID: 38202655 PMCID: PMC10780165 DOI: 10.3390/molecules29010072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Selective butyrylcholinesterase inhibitors are considered promising drug candidates for the treatment of Alzheimer's disease. In this work, one rivastigmine-bambuterol hybrid (MTR-1) and fourteen of its analogues were synthesized, purified, and characterized. In vitro cholinesterase assays showed that all the compounds were more potent inhibitors of BChE when compared to AChE. Further investigations indicated that MTR-3 (IC50(AChE) > 100,000 nM, IC50(BChE) = 78 nM) was the best compound in the series, showing high butyrylcholinesterase selectivity and inhibition potency, the potential to permeate the blood-brain barrier, and longer-lasting BChE inhibition than bambuterol. These compounds could be used to discover novel specific BChE inhibitors for the treatment of Alzheimer's disease.
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Affiliation(s)
- Jie Wu
- School of Food & Pharmaceutical Engineering, Zhaoqing University, Zhaoqing 526061, China
| | - Zekai Tan
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China;
| | - Marco Pistolozzi
- International School, Jinan University, Guangzhou 510632, China;
| | - Wen Tan
- Post-Doctoral Innovation Site, Jinan University Affiliation, Yuanzhi Health-Tech Inc., Hengqin District, Zhuhai 519000, China
- Kesi (Shandong) Innovation Service Inc., Heze Modern Medical Port, Mudan District, Heze 274009, China
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway 47500, Malaysia
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2
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Lin Z, Jing Y, Huang Y, Yang S, Chen S, Ou Y, Pistolozzi M, Yang X. A cleavable self-aggregating tag scheme for the expression and purification of disulfide bonded proteins and peptides. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Leng H, Wang Y, Wang J, Sun H, Sun A, Pistolozzi M, Zhang L, Yan J. Dual-Emission GFP Chromophore-Based Derivative for Imaging and Discriminating Aβ Oligomers and Aggregates. Anal Chem 2022; 94:1999-2006. [PMID: 35041386 DOI: 10.1021/acs.analchem.1c03452] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
β-Amyloid deposition is one of the main pathological features of Alzheimer's disease (AD). The development of fluorescent probes targeting specific β-amyloid species has recently become an attractive strategy to achieve the early diagnosis of AD. In this work, a dual-channel fluorescent protein chromophore derivative C17 was rationally designed and synthesized for the detection and discrimination of Aβ42 aggregates and oligomers. C17 exhibits a specific turn-on emission peak for Aβ42 oligomers at ∼470 nm (peak A) and a peak at ∼600 nm (peak B) for both Aβ42 oligomers and Aβ42 aggregates. Taking advantage of the dual emission of the probe, the dynamic aggregation process of the Aβ42 peptide was monitored in solution. Moreover, double staining of brain sections from transgenic AD mice revealed that peak A of C17 preferentially detected Aβ42 oligomers, whereas peak B was more sensitive to Aβ42 aggregates. The fact that probe C17 can be used for dissecting these two Aβ42 species makes C17 a comprehensive tool for β-amyloid aggregation studies in AD research.
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Affiliation(s)
- Huaxiang Leng
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China
| | - Yuxuan Wang
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China
| | - Juan Wang
- Laboratory of Neurogenerative Diseases & Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai 201318, P. R. China
| | - Han Sun
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China
| | - Anyang Sun
- Laboratory of Neurogenerative Diseases & Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai 201318, P. R. China
| | - Marco Pistolozzi
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China.,International School, Jinan University, 601 Huangpu Avenue West, 510632 Guangzhou, P. R. China
| | - Lei Zhang
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China
| | - Jinwu Yan
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, P. R. China
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4
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Lin Z, Li H, He L, Jing Y, Pistolozzi M, Wang T, Ye Y. Efficient genome editing for Pseudomonas aeruginosa using CRISPR-Cas12a. Gene 2021; 790:145693. [PMID: 33961975 DOI: 10.1016/j.gene.2021.145693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/29/2021] [Accepted: 04/30/2021] [Indexed: 10/21/2022]
Abstract
The CRISPR-Cas12a system has been demonstrated as an attractive tool for bacterial genome engineering. In particular, FnCas12a recognizes protospacer-adjacent motif (PAM) sites with medium or low GC content, which complements the Cas9-based systems. Here we explored Francisella novicida Cas12a (FnCas12a) for genome editing in Pseudomonas aeruginosa. By using a two-plasmid system expressing the constitutive FnCas12a nuclease, the inducible λRed recombinase, a CRISPR RNA (crRNA), we achieved gene deletion, insertion and replacement with high efficiency (in most cases > 75%), including the deletion of large DNA fragments up to 15 kb and the serial deletion of duplicate gene clusters. This work should provide a useful and complementary addition to the genome engineering toolbox for the study of P. aeruginosa biology and physiology.
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Affiliation(s)
- Zhanglin Lin
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China.
| | - Huanhuan Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Lan He
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Yanyun Jing
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Marco Pistolozzi
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Tingting Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China.
| | - Yanrui Ye
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, China.
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5
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Lin Z, Lin Q, Li J, Pistolozzi M, Zhao L, Yang X, Ye Y. Cover Image. Biotechnol Bioeng 2020. [DOI: 10.1002/bit.27062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhanglin Lin
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Qiao Lin
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Jiahui Li
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Marco Pistolozzi
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Lei Zhao
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Xiaofeng Yang
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
| | - Yanrui Ye
- School of Biology and Biological Engineering South China University of Technology Guangzhou Guangdong China
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6
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Lin Z, Lin Q, Li J, Pistolozzi M, Zhao L, Yang X, Ye Y. Spy chemistry-enabled protein directional immobilization and protein purification. Biotechnol Bioeng 2020; 117:2923-2932. [PMID: 32543719 DOI: 10.1002/bit.27460] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/10/2020] [Accepted: 06/14/2020] [Indexed: 12/15/2022]
Abstract
Site-directed protein immobilization allows the homogeneous orientation of proteins with high retention of activity, which is advantageous for many applications. Here, we report a facile, specific, and efficient strategy based on the SpyTag-SpyCatcher chemistry. Two SpyTag-fused model proteins, that is, the monomeric red fluorescent protein (RFP) and the oligomeric glutaryl-7-aminocephalosporanic acid acylase, were easily immobilized onto a SpyCatcher-modified resin directly from cell lysates, with activity recoveries in the range of 85-91%. This strategy was further adapted to protein purification, which proceeded through the selective capture of the SpyCatcher-fused target proteins by a SpyTag-modified resin, with the aid of an intein to generate authentic N-termini. For two model proteins, that is, RFP and a variable domain of a heavy chain antibody, the yields were ∼3-7 mg/L culture with >90% purities. This approach could provide a versatile tool for producing high-performance immobilized protein devices and proteins for industrial and therapeutic uses.
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Affiliation(s)
- Zhanglin Lin
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Qiao Lin
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Jiahui Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Marco Pistolozzi
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Lei Zhao
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Xiaofeng Yang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Yanrui Ye
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
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7
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Lin Z, Zhao Q, Wang X, Zhou B, Xing L, Wang J, Pistolozzi M, Zhao L, Wang T. Engineered pH‐inducible intein
Mtu
ΔI‐CM variants with markedly reduced premature cleavage activity. AIChE J 2019. [DOI: 10.1002/aic.16806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zhanglin Lin
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou China
- Department of Chemical EngineeringTsinghua University Beijing China
| | - Qing Zhao
- Department of Chemical EngineeringTsinghua University Beijing China
| | - Xu Wang
- Department of Chemical EngineeringTsinghua University Beijing China
| | - Bihong Zhou
- Department of Chemical EngineeringTsinghua University Beijing China
| | - Lei Xing
- Department of Chemical EngineeringTsinghua University Beijing China
| | - Jiangyun Wang
- Institute of BiophysicsChinese Academy of Sciences Beijing China
| | - Marco Pistolozzi
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou China
| | - Lei Zhao
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou China
| | - Tingting Wang
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou China
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8
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Liu H, Zhou H, Du H, Xiao Q, Pistolozzi M. Kinetically-controlled mechanism-based isolation of metabolic serine hydrolases in active form from complex proteomes: butyrylcholinesterase as a case study. RSC Adv 2019; 9:38505-38519. [PMID: 35540231 PMCID: PMC9075836 DOI: 10.1039/c9ra07583f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/18/2019] [Indexed: 12/02/2022] Open
Abstract
In this work an activity-based probe containing a carbamate group was designed to isolate human butyrylcholinesterase (hBChE), a metabolic serine hydrolase (mSH), from complex proteomes. The method took advantage of the native interaction mechanism of mSHs with carbamate pseudo-substrates for temporarily capturing the enzyme on a resin functionalized with the carbamate probe and releasing the enzyme in active form after removal of the contaminating proteins. The isolation relied on the possibility of manipulating the carbamylation and decarbamylation kinetics favoring the former during the capture and wash steps and the latter in the release step. The designed probe captured and released all the active hBChE isoenzymes present in plasma with high selectivity (up to ∼2000-fold purification) and reasonable yields (17% to 36%). The parameters affecting the performance were the incubation time used in the load and elution steps, the plasma to resin volumetric ratio, the elution temperature and the nature and concentration of the eluting agent. The carbamate resin could be prepared either by coupling a fully synthesized probe with an activated resin or by building the probe onto the resin by a step-by-step procedure, without major differences in performance between the two routes. The prepared resins allowed to process up to about 8.5 mL of plasma per g of resin with constant performance. Since the method was based on the general catalytic cycle of mSHs, we expect this approach to be applicable to other enzymes of the family, by selecting a suitable target-selective feature to link to the carbamate group. The modulation of the equilibrium between carbamylation and decarbamylation kinetics is used to isolate a model metabolic serine hydrolase.![]()
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Affiliation(s)
- Hui Liu
- School of Biology & Biological Engineering
- South China University of Technology
- Higher Education Mega Center
- Guangzhou
- People's Republic of China
| | - Huimin Zhou
- School of Biology & Biological Engineering
- South China University of Technology
- Higher Education Mega Center
- Guangzhou
- People's Republic of China
| | - Huaqiao Du
- School of Biology & Biological Engineering
- South China University of Technology
- Higher Education Mega Center
- Guangzhou
- People's Republic of China
| | - Qiaoling Xiao
- School of Biology & Biological Engineering
- South China University of Technology
- Higher Education Mega Center
- Guangzhou
- People's Republic of China
| | - Marco Pistolozzi
- School of Biology & Biological Engineering
- South China University of Technology
- Higher Education Mega Center
- Guangzhou
- People's Republic of China
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9
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Su H, Pistolozzi M, Shi X, Sun X, Tan W. Alterations in NO/ROS ratio and expression of Trx1 and Prdx2 in isoproterenol-induced cardiac hypertrophy. Acta Biochim Biophys Sin (Shanghai) 2017; 49:1022-1028. [PMID: 29036266 DOI: 10.1093/abbs/gmx102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Indexed: 12/27/2022] Open
Abstract
The development of cardiac hypertrophy is a complicated process, which undergoes a transition from compensatory hypertrophy to heart failure, and the identification of new biomarkers and targets for this disease is greatly needed. Here we investigated the development of isoproterenol (ISO)-induced cardiac hypertrophy in an in vitro experimental model. After the induction of hypertrophy with ISO treatment in H9c2 cells, cell surface area, cell viability, cellular reactive oxygen species (ROS), and nitric oxide (NO) levels were tested. Our data showed that the cell viability, mitochondrial membrane potential, and NO/ROS balance varied during the development of cardiac hypertrophy in H9c2 cells. It was also found that the expression of thioredoxin1 (Trx1) and peroxiredoxin2 (Prdx2) was decreased during the cardiac hypertrophy of H9c2 cells. These results suggest a critical role for Trx1 and Prdx2 in the cardiac hypertrophy of H9c2 cells and in the transition from compensated hypertrophy to de-compensated hypertrophy in H9c2 cells, and our findings may have important implications for the management of this disease.
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Affiliation(s)
- Hao Su
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Marco Pistolozzi
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Xingjuan Shi
- Key Laboratory of Developmental Genes and Human Disease, Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Xiaoou Sun
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Wen Tan
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
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10
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Xiao Q, Zhou H, Wei H, Du H, Tan W, Zhan Y, Pistolozzi M. A new method to characterize the kinetics of cholinesterases inhibited by carbamates. J Pharm Biomed Anal 2017; 144:175-182. [DOI: 10.1016/j.jpba.2017.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/27/2017] [Accepted: 04/09/2017] [Indexed: 01/11/2023]
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11
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Shang J, Dai X, Li Y, Pistolozzi M, Wang L. HybridSim-VS: a web server for large-scale ligand-based virtual screening using hybrid similarity recognition techniques. Bioinformatics 2017; 33:3480-3481. [DOI: 10.1093/bioinformatics/btx418] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 06/22/2017] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jinling Shang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Xi Dai
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Yecheng Li
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Marco Pistolozzi
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Ling Wang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
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12
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Wu J, Tian Y, Wang S, Pistolozzi M, Jin Y, Zhou T, Roy G, Xu L, Tan W. Design, synthesis and biological evaluation of bambuterol analogues as novel inhibitors of butyrylcholinesterase. Eur J Med Chem 2017; 126:61-71. [DOI: 10.1016/j.ejmech.2016.08.061] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/28/2016] [Accepted: 08/25/2016] [Indexed: 02/02/2023]
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13
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Shi K, Chen G, Pistolozzi M, Xia F, Wu Z. Improved analysis of Monascus pigments based on their pH-sensitive UV-Vis absorption and reactivity properties. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:1396-401. [DOI: 10.1080/19440049.2016.1214289] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kan Shi
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Gong Chen
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
- Tianyi Biotech. Co., Ltd, Dongguan 523000, China
| | - Marco Pistolozzi
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Fenggeng Xia
- Guangzhou Institute of Microbiology, Guangzhou 510663, China
| | - Zhenqiang Wu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
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14
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Pistolozzi M, Du H, Wei H, Tan W. Stereoselective Inhibition of Human Butyrylcholinesterase by the Enantiomers of Bambuterol and Their Intermediates. Drug Metab Dispos 2014; 43:344-52. [DOI: 10.1124/dmd.114.060251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Tedesco D, Pistolozzi M, Zanasi R, Bertucci C. Characterization of the species-dependent ketoprofen/albumin binding modes by induced CD spectroscopy and TD-DFT calculations. J Pharm Biomed Anal 2014; 112:176-80. [PMID: 25555517 DOI: 10.1016/j.jpba.2014.11.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 11/14/2014] [Accepted: 11/15/2014] [Indexed: 11/26/2022]
Abstract
The stereospecificity of high-affinity biorecognition phenomena at the basis of the activity of drugs is an important topic of active research in medicinal chemistry. The binding of drugs to their targets or to carrier proteins may lead to the onset of an induced circular dichroism (ICD) signal, which can be detected experimentally. Quantum mechanical (QM) calculations based on density functional theory (DFT) and its time-dependent formulation (TD-DFT) can be used to determine the theoretical chiroptical response of all the possible conformations of drugs bound to their hosts; by comparison with the experimental ICD spectra of drug-host complexes, this approach can lead to the identification of possible binding modes in the absence of X-ray crystallography or NMR data. The present article reports the application of experimental electronic circular dichroism (ECD) spectroscopy, DFT conformational analysis and TD-DFT calculations to the investigation of the binding modes of (S)-ketoprofen to serum albumins. The peculiar species-dependent ICD spectra observed for the binding of (S)-ketoprofen to different serum albumins can be explained by the selection of different mutual arrangements of the phenyl moieties inside the binding pocket. Such structural elucidations contribute to a better understanding of the changes in the pharmacokinetic and pharmacodynamic profiles of drugs among different species.
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Affiliation(s)
- Daniele Tedesco
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, Bologna, 40126 Italy
| | - Marco Pistolozzi
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, Bologna, 40126 Italy
| | - Riccardo Zanasi
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, Fisciano, 84084 Italy
| | - Carlo Bertucci
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, Bologna, 40126 Italy.
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16
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Huang L, Chen B, Pistolozzi M, Wu Z, Wang J. Inoculation and alkali coeffect in volatile fatty acids production and microbial community shift in the anaerobic fermentation of waste activated sludge. Bioresour Technol 2014; 153:87-94. [PMID: 24345567 DOI: 10.1016/j.biortech.2013.11.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/14/2013] [Accepted: 11/20/2013] [Indexed: 06/03/2023]
Abstract
Batch fermentations of waste activated sludge (WAS) at alkaline pH with different inocula were performed. Paper mill anaerobic granular sludge (PAS) and dyeing mill anaerobic sludge (DAS) were used as inocula. At pH 10 the inoculation did not increase the volatile fatty acids (VFAs) production compared to the non-inoculated samples fermented in the same conditions, and the maximal VFAs yield of non-inoculated WAS was higher than inoculated WAS. However, at pH 9 the inoculation with PAS increased the sludge hydrolysis and VFAs production was 1.7-fold higher than that in non-inoculated WAS (yield 52.40mg/g of volatile solid). Denaturing gradient gel electrophoresis analysis revealed that 3 bacterial species, identified as Proteocatella, Tepidibacter, and Clostridium, disappeared when inoculated with PAS at pH 9 or at pH⩾10. The results showed that the inoculation with PAS can be helpful to achieve a relatively high VFAs production from WAS in a moderate alkaline environment.
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Affiliation(s)
- Long Huang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Ben Chen
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Marco Pistolozzi
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Zhenqiang Wu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China.
| | - Jufang Wang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
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17
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Pistolozzi M, Fortugno C, Franchini C, Corbo F, Muraglia M, Roy M, Félix G, Bertucci C. Species-dependent binding of tocainide analogues to albumin: affinity chromatography and circular dichroism study. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 968:69-78. [PMID: 24472243 DOI: 10.1016/j.jchromb.2014.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/02/2014] [Accepted: 01/05/2014] [Indexed: 11/25/2022]
Abstract
A series of novel tocainide analogues were characterized for their HSA and RSA binding, by using high-performance liquid affinity chromatography (HPLAC) and circular dichroism (CD). In this HPLAC study, HSA and RSA were covalently immobilized to the silica matrix of HPLC columns, with a procedure that maintained unaltered the binding properties of the proteins. The tocainide analogues were ranked for their affinity to HSA and RSA on the basis of their bound fractions measured by the two albumin-based columns. This technique was also applied to characterize the high affinity binding sites of these tocainide analogues to the protein. For this purpose displacement experiments were carried out by means of increasing concentrations in the mobile phase of competitors known to bind selectively to the main binding sites of HSA. The results obtained with the immobilized proteins were confirmed by investigating the same drug-protein systems in solution by circular dichroism. The comparison of the data collected with both methodologies highlighted the dramatic effect of small differences in the amino acidic sequences of the two proteins. In fact, despite their similar primary and secondary structures, a small difference in the amino acidic sequence leads to significant differences in their three-dimensional structure reflecting their different binding capacity and their stereoselectivity. Therefore, this study confirms how it is crucial to consider the significant differences among the animal models when performing pharmacokinetic studies. It is also clear that the knowledge of serum carrier binding parameters at an early stage of drug discovery represents a great advantage that may help to save time and efforts.
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Affiliation(s)
- Marco Pistolozzi
- School of Bioscience & Bioengineering, South China University of Technology, Higher Education Mega Center, 510006 Guangzhou, People's Republic of China
| | - Cecilia Fortugno
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Carlo Franchini
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari 'Aldo Moro', Bari, Italy
| | - Filomena Corbo
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari 'Aldo Moro', Bari, Italy
| | - Marilena Muraglia
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari 'Aldo Moro', Bari, Italy
| | - Myriam Roy
- Centre Interdisciplinaire de Nanoscience de Marseille (CNRS-UMR 7325), Aix-Marseille Université, France
| | - Guy Félix
- Centre Interdisciplinaire de Nanoscience de Marseille (CNRS-UMR 7325), Aix-Marseille Université, France
| | - Carlo Bertucci
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy.
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Pistolozzi M, Royo V, Pereira AC, Silva MLA, Silva R, Cunha WR, Vaconcelos K, Cass QB, Martins CHG, Bastos JK, Varchi G, Guerrini A, Bertucci C. Enantiomeric HPLC resolution and absolute stereochemistry assignment of a new poligamain derivative. J Pharm Biomed Anal 2013; 75:118-22. [PMID: 23312389 DOI: 10.1016/j.jpba.2012.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 11/07/2012] [Indexed: 11/28/2022]
Abstract
A new aryltetralin lignan derivative, 1, was obtained by reacting dimethyl succinate and piperonal, furnishing the lactone 4-(3',4'-methylenedioxybenzyl)-4,5-dihydro-2(3H)-furanone, which was reacted once again with piperonal and LDA to give the dibenzylbutirolactone 7-hydroxyhinokinin. The cyclization of 7-hydroxyhinokinin into polygamain occurred in the presence of trifluoroacetic acid. The reduction of the furanic ring of polygamain was done by its reaction with DIBAL in THF, furnishing the diol functionalized lignin derivative 1 as single diastereomer. The enantiomeric fractions of 1 were obtained by preparative enantioselective HPLC. The absolute stereochemistry was assigned by electronic circular dichroism (ECD) and nuclear magnetic resonance (NMR) spectroscopy. An all-trans relative configuration was determined by NMR on the bases of ¹H coupling constants and nuclear Overhauser effect (n.O.e.) experiments. The absolute configuration at C1 was assigned on the basis of the ECD sign at 296 nm by comparison to the ECD spectra of structural analogues with defined stereochemistry. The assignment of the absolute configuration was confirmed by applying the exciton chirality method to the well-defined ECD couplets at 285 and 200 nm allied to the two electronic transitions L(b) and B(b) of the aromatic moieties, respectively. Rac-1 and its enantiomeric isomers were evaluated against important bacteria responsible for dental caries. The best results obtained for the (1R,2S,3S) isomer were against Streptococcus mutans (250 μM), Streptococcus salivarius (250 μM), Streptococcus sobrinus (280 μM) and Streptococcus mitis (280 μM). The (1S,2R,3R) isomer was active only against Streptococcus sanguinis (280 μM). The enantiomeric mixture was less active than the (1R,2S,3S) isomer.
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Affiliation(s)
- M Pistolozzi
- Dipartimento di Scienze Farmaceutiche, Università di Bologna, Via Belmeloro 6, 40126 Bologna, Italy
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19
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Naldi M, Fiori J, Pistolozzi M, Drake AF, Bertucci C, Wu R, Mlynarczyk K, Filipek S, De Simone A, Andrisano V. Amyloid β-peptide 25-35 self-assembly and its inhibition: a model undecapeptide system to gain atomistic and secondary structure details of the Alzheimer's disease process and treatment. ACS Chem Neurosci 2012; 3:952-62. [PMID: 23173074 DOI: 10.1021/cn3000982] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 08/31/2012] [Indexed: 11/28/2022] Open
Abstract
Combined results of theoretical molecular dynamic simulations and in vitro spectroscopic (circular dichroism and fluorescence) studies are presented, providing the atomistic and secondary structure details of the process by which a selected small molecule may destabilize the β-sheet ordered "amyloid" oligomers formed by the model undecapeptide of amyloid β-peptide 25-35 [Aβ(25-35)]. Aβ(25-35) was chosen because it is the shortest fragment capable of forming large β-sheet fibrils and retaining the toxicity of the full length Aβ(1-40/42) peptides. The conformational transition, that leads to the formation of β-sheet fibrils from soluble unordered structures, was found to depend on the environmental conditions, whereas the presence of myricetin destabilizes the self-assembly and antagonizes this conformational shift. In parallel, we analyzed several molecular dynamics trajectories describing the evolution of five monomer fragments, without inhibitor as well as in the presence of myricetin. Other well-known inhibitors (curcumin and (-)-tetracycline), found to be stronger and weaker Aβ(1-42) aggregation inhibitors, respectively, were also studied. The combined in vitro and theoretical studies of the Aβ(25-35) self-assembly and its inhibition contribute to understanding the mechanism of action of well-known inhibitors and the peptide amino acid residues involved in the interaction leading to a rational drug design of more potent new molecules able to antagonize the self-assembly process.
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Affiliation(s)
- Marina Naldi
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
| | - Jessica Fiori
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
| | - Marco Pistolozzi
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
| | - Alex F. Drake
- Biomolecular Spectroscopy Centre, King’s College London, The Wolfson Wing, Hodgkin
Building, London SE1 1UL, United Kingdom
| | - Carlo Bertucci
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
| | - Rongliang Wu
- International Institute of Molecular and Cell Biology, ul. Ks. Trojdena 4, 02-109
Warsaw, Poland
| | - Krzysztof Mlynarczyk
- Faculty
of Chemistry, University of Warsaw, ul.
Pasteura 1, 02-093 Warsaw,
Poland
| | - Slawomir Filipek
- Faculty
of Chemistry, University of Warsaw, ul.
Pasteura 1, 02-093 Warsaw,
Poland
| | - Angela De Simone
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
| | - Vincenza Andrisano
- Department of Pharmaceutical
Sciences, University of Bologna, via Belmeloro
6, 40126 Bologna, Italy
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Bertucci C, Pistolozzi M, De Simone A. Structural characterization of recombinant therapeutic proteins by circular dichroism. Curr Pharm Biotechnol 2012; 12:1508-16. [PMID: 21542799 DOI: 10.2174/138920111798357276] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 12/23/2010] [Accepted: 01/12/2011] [Indexed: 11/22/2022]
Abstract
Most of the protein therapeutics are now produced by recombinant DNA technology. The advantages of recombinant proteins are related to their higher specificity and to their safety as exposure to animal or human diseases. However, several problems are still present in development of recombinant proteins as therapeutics, such as low bioavailability, short serum half-life, and immune response. Their successful application hinges on the protein stereochemical stability, and on the folding and the tendency to aggregate induced by purification steps and storage. All these aspects determine the failure of many potential protein therapies, and limitations in the development of the formulation. The application of multiple analytical techniques is important in order to obtain a detailed product profile and to understand how manufacturing can influence product structure and activity. Surely the protein conformation is a key aspect to be assessed, because a specific conformation is often essential for the biological function of the protein. Thus, there is a growing need to perform structural studies under the conditions in which the proteins operate, and to monitor the structural changes of the protein. Circular dichroism has been increasingly recognised as a valuable and reliable technique to get this information. In particular, examples will be here reported on the use of circular dichroism spectroscopy in the structural characterization of free and formulated recombinant proteins, looking at the prediction of the secondary structure, propensity to conformational changes, stability, and tendency to aggregate.
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Affiliation(s)
- Carlo Bertucci
- Department of Pharmaceutical Sciences, University of Bologna, via Belmeloro 6, 40126-Bologna, Italy.
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Pérez DI, Pistolozzi M, Palomo V, Redondo M, Fortugno C, Gil C, Felix G, Martinez A, Bertucci C. 5-Imino-1,2-4-thiadiazoles and quinazolines derivatives as glycogen synthase kinase 3β (GSK-3β) and phosphodiesterase 7 (PDE7) inhibitors: Determination of blood–brain barrier penetration and binding to human serum albumin. Eur J Pharm Sci 2012; 45:677-84. [DOI: 10.1016/j.ejps.2012.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Accepted: 01/11/2012] [Indexed: 10/14/2022]
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Bertucci C, De Simone A, Pistolozzi M, Rosini M. Reversible human serum albumin binding of lipocrine: A circular dichroism study. Chirality 2011; 23:827-32. [DOI: 10.1002/chir.21006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 06/28/2011] [Indexed: 11/10/2022]
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Bartolini M, Pistolozzi M, Andrisano V, Egea J, López MG, Iriepa I, Moraleda I, Gálvez E, Marco-Contelles J, Samadi A. Chemical and Pharmacological Studies on Enantiomerically Pure p-Methoxytacripyrines, Promising Multi-Target-Directed Ligands for the Treatment of Alzheimer’s Disease. ChemMedChem 2011; 6:1990-7. [DOI: 10.1002/cmdc.201100239] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 07/22/2011] [Indexed: 11/11/2022]
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Pistolozzi M, Bertucci C, De Simone A, Mancini F, Andrisano V. Characterization of BACE-1 Inhibition Mechanism by Circular Dichroism and Fluorescence Spectroscopy. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.09.692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pistolozzi M, Franchini C, Corbo F, Muraglia M, De Giorgi M, Felix G, Bertucci C. Tocainide analogues binding to human serum albumin: A HPLAC and circular dichroism study. J Pharm Biomed Anal 2010; 53:179-85. [DOI: 10.1016/j.jpba.2010.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Revised: 02/19/2010] [Accepted: 03/01/2010] [Indexed: 11/26/2022]
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Naldi M, Pistolozzi M, Bertucci C, De Simone A, Altilia S, Pierini M, Franceschi C, Salvioli S, Andrisano V. Structural characterization of p53 isoforms due to the polymorphism at codon 72 by mass spectrometry and circular dichroism. J Pharm Biomed Anal 2010; 53:200-6. [DOI: 10.1016/j.jpba.2010.03.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 03/25/2010] [Accepted: 03/26/2010] [Indexed: 01/06/2023]
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Prezzavento O, Campisi A, Parenti C, Ronsisvalle S, Aricò G, Arena E, Pistolozzi M, Scoto GM, Bertucci C, Vanella A, Ronsisvalle G. Synthesis and resolution of cis-(+/-)-methyl (1R,2S/1S,2R)-2-[(4-hydroxy-4-phenylpiperidin-1-yl)methyl]-1-(4-methylphenyl)cyclopropanecarboxylate [(+/-)-PPCC)]: new sigma receptor ligands with neuroprotective effect. J Med Chem 2010; 53:5881-5. [PMID: 20684615 DOI: 10.1021/jm100116p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enantiomers of cis-(+/-)-methyl (1R,2S/1S,2R)-2-[(4-hydroxy-4-phenylpiperidin-1-yl)methyl]-1-(4-methylphenyl)cyclopropanecarboxylate [1, (+/-)-PPCC], a selective sigma ligand, were synthesized. The (+)- and (-)-enantiomers bind predominantly to sigma(1) receptors and have a reduced sigma(2) affinity. Both individually restore the astroglial oxidative status modified by glutamate, counteracting also transglutaminase-2 overexpression. They exhibited in vivo anti-opioid effects on kappa opioid (KOP) receptor-mediated analgesia. Our findings demonstrate that the enantiomers display mainly sigma(1) agonist activity and that they have neuroprotective effects.
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Affiliation(s)
- Orazio Prezzavento
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section, University of Catania, Catania, Italy.
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Ghelardini C, Desaphy JF, Muraglia M, Corbo F, Matucci R, Dipalma A, Bertucci C, Pistolozzi M, Nesi M, Norcini M, Franchini C, Camerino DC. Effects of a new potent analog of tocainide on hNav1.7 sodium channels and in vivo neuropathic pain models. Neuroscience 2010; 169:863-73. [DOI: 10.1016/j.neuroscience.2010.05.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Revised: 04/16/2010] [Accepted: 05/09/2010] [Indexed: 02/08/2023]
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Bertucci C, Pistolozzi M, Felix G, Danielson UH. HSA binding of HIV protease inhibitors: a high-performance affinity chromatography study. J Sep Sci 2009; 32:1625-31. [PMID: 19370735 DOI: 10.1002/jssc.200900051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The binding of HIV protease inhibitors, drugs important for anti-HIV chemotherapy, to HSA was examined by high-performance affinity chromatography. Frontal analysis was first used to determine the amount of anchored protein and the binding capacity for selected markers on this column. Zonal elution experiments then ranked the HSA bound fraction of the examined compounds. Information on the binding region was obtained by competitive zonal elution experiments using probe compounds with known sites on HSA. An allosteric competition between HIV protease inhibitors (PIs) and valproate (a probe for the bilirubin site) was detected, consistent with a noncooperative binding mechanism. No significant competition was observed between the examined compounds and salicylate or ibuprofen, probes for sites I and II, respectively. The observations were confirmed by circular dichroism spectroscopy, based on the change in the induced circular dichroism signals of selected markers for the main binding sites of HSA when ritonavir was added as the competitor. These results were in good agreement with previous literature reports and provide more details on how PIs are transported in plasma and how they may compete with other drugs in the body.
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Affiliation(s)
- Carlo Bertucci
- Department of Pharmaceutical Sciences, University of Bologna, Bologna, Italy.
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31
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Guandalini L, Norcini M, Varani K, Pistolozzi M, Gotti C, Bazzicalupi C, Martini E, Dei S, Manetti D, Scapecchi S, Teodori E, Bertucci C, Ghelardini C, Romanelli MN. Design, Synthesis, and Preliminary Pharmacological Evaluation of New Quinoline Derivatives as Nicotinic Ligands. J Med Chem 2007; 50:4993-5002. [PMID: 17850058 DOI: 10.1021/jm070325r] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of nicotinic ligands, carrying a quinoline nucleus, and characterized by a pharmacophoric distance between the quinoline nitrogen (H-bond acceptor) and the cationic nitrogen atoms higher than that proposed in the classical pharmacophoric models, have been synthesized and tested for their affinity for the central nicotinic receptor. The enantiomers of the nicotine analogue 1-methyl-2-pyrrolidinyl-6-quinoline and of its methiodide display enantioselectivity in binding studies, but not when tested in vivo; on alpha7* nicotinic receptor enantioselectivity is inverted with respect to the alpha4beta2* subtype. N,N,N-Trimethyl-4-(quinolin-6-yl)but-3-yn-1-ammonium iodide (3c) and trans-N,N,N-trimethyl-4-(quinolin-6-yl)but-3-en-1-ammonium iodide (4c), showing pharmacophoric distances in the range 8.5-10.4 A, interact with the alpha4beta2* nicotinic receptor with Ki in the microM range; compound 3c shows preference for the alpha7* subtype.
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Affiliation(s)
- Luca Guandalini
- Laboratory of Design, Synthesis and Study of Biologically Active Heterocycles (HeteroBioLab), Department of Pharmaceutical Sciences, University of Florence, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Italy
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Bertucci C, Piccoli A, Pistolozzi M. Optical Biosensors as a Tool for Early Determination of Absorption and Distribution Parameters of Lead Candidates and Drugs. Comb Chem High Throughput Screen 2007; 10:433-40. [PMID: 17896938 DOI: 10.2174/138620707781996411] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Specific molecular interactions provide a fundamental mechanism for selectivity in every aspect of biological structure and function. The ability to measure quantitatively such interaction properties across a wide range of affinity, size, and purity is a growing need. A short review on the use of the optical biosensor techniques is presented, focused on its application for determining the absorption and distribution parameters of drugs and lead compounds. The basic biosensor technology principles are described together with some immobilization methods commonly used for the preparation of selective and specific biosensor surfaces for assays. Some relevant research topics in the field of small molecule recognition phenomena are presented as examples, including binding to plasma proteins, and binding to lipid membranes, in the frame of ADME (absorption, distribution, metabolism and excretion) parameter determinations. These applications demonstrate the applicability of such techniques to the study of low mass compounds and illustrates their potential for the screening of libraries of compounds with regard to their binding to target bio-molecules as part of drug development.
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Affiliation(s)
- Carlo Bertucci
- Department of Pharmaceutical Sciences, University of Bologna, via Belmeloro 6, I-40126 Bologna, Italy.
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