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Zhang Y, Zhang H, Chan DWH, Ma Y, Lu A, Yu S, Zhang B, Zhang G. Strategies for developing long-lasting therapeutic nucleic acid aptamer targeting circulating protein: The present and the future. Front Cell Dev Biol 2022; 10:1048148. [PMID: 36393853 PMCID: PMC9664076 DOI: 10.3389/fcell.2022.1048148] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/20/2022] [Indexed: 08/09/2023] Open
Abstract
Aptamers are short, single-stranded DNA or RNA oligonucleotide sequences that can bind specific targets. The molecular weight of aptamers (<20 kDa) is lower than the renal filtration threshold (30∼50 kDa), resulting in very short half-lives in vivo, which limit their druggability. The development of long-lasting modification approaches for aptamers can help address the druggability bottleneck of aptamers. This review summarized two distinct kinds of long-lasting modification approaches for aptamers, including macromolecular modification and low-molecular-weight modification. Though it is a current approach to extend the half-life of aptamers, the macromolecular modification approach could limit the space for the dosage increases, thus causing potential compliance concerns due to large molecular weight. As for the other modification approach, the low-molecular-weight modification approach, which uses low molecular weight coupling agents (LMWCAs) to modify aptamers, could greatly increase the proportion of aptamer moiety. However, some LMWCAs could bind to other proteins, causing a decrease in the drug amounts in blood circulation. Given these issues, the outlook for the next generation of long-lasting modification approaches was proposed at the end, including improving the administration method to increase dosage for aptamer drugs modified by macromolecule and developing Artificial intelligence (AI)-based strategies for optimization of LMWCAs.
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Affiliation(s)
- Yihao Zhang
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Huarui Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Daniel Wing Ho Chan
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Yuan Ma
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Integrated Bioinfomedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Precision Medicine and Innovative Drug Discovery, HKBU Institute for Research and Continuing Education, Shenzhen, China
| | - Aiping Lu
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Integrated Bioinfomedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Precision Medicine and Innovative Drug Discovery, HKBU Institute for Research and Continuing Education, Shenzhen, China
| | - Sifan Yu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Baoting Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Ge Zhang
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Integrated Bioinfomedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
- Institute of Precision Medicine and Innovative Drug Discovery, HKBU Institute for Research and Continuing Education, Shenzhen, China
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Huq M, Rosales-Solano H, Pawliszyn J. Investigation of binding of fatty acids to serum albumin to determine free concentrations: Experimental and in-silico approaches. Anal Chim Acta 2022; 1192:339370. [DOI: 10.1016/j.aca.2021.339370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/17/2022]
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Penezić AZ, Aćimović JM, Pavićević ID, Jovanović VB, Takić M, Mandić LM. The interplay between copper(II), human serum albumin, fatty acids, and carbonylating agent interferes with Cys 34 thiol reactivity and copper binding. J Biol Inorg Chem 2018; 24:61-70. [PMID: 30456476 DOI: 10.1007/s00775-018-1628-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/13/2018] [Indexed: 12/12/2022]
Abstract
Cys34 thiol group of human serum albumin (HSA) represents major plasma antioxidant. Its reactivity is influenced by multiple factors. The influence of fatty acids (FA; saturated, mono, and poly unsaturated acids from fish oil) binding to HSA, on copper(II) binding affinity and Cys34 thiol group accessibility/reactivity, in the presence of carbonylation agent (methylglyoxal, MG) was examined. HSA-copper(II) content, thiol group reactivity, and HSA carbonylation level were monitored spectrophotometrically. Changes in HSA were followed by fluorescence spectroscopy and native PAG electrophoresis. FA/HSA molar ratio was screened by GC. Together, binding of copper(II) ions and FA to HSA increase the reactivity of Cys34 thiol group (depending on the type of FA), with constant contribution of copper(II) ions of one-third. Carbonylation of FA-HSA-Cu(II) complexes caused a decrease in the Cys34 thiol group content, accompanied by a decrease in the content of HSA-bound copper. The carbonylation level of guanidine groups was not affected by FAs and copper(II) binding. Fluorescent emission spectra of FA-HSA-Cu(II)-MG complexes showed conformational changes in HSA molecule. Although binding of fatty acids and copper ions caused a significant increase in the thiol group reactivity, Cys34 thiol from FA-HSA-Cu(II) complexes reacted with MG in smaller extent than expected, probably as a consequence of conformational changes introduced by carbonylation. Increase in the percentage of reacted-free thiol groups with MG (due to FA and copper binding) may not seem to be very significant, but it is very important in complex biological systems, where catalytic metal is present.
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Affiliation(s)
- Ana Z Penezić
- Institute for the Application of Nuclear Energy, INEP, Banatska 31b, 11000, Belgrade, Serbia.
| | - Jelena M Aćimović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Ivan D Pavićević
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Vesna B Jovanović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Marija Takić
- Laboratory for Nutrition and Metabolism, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Ljuba M Mandić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
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Svennebring AM. The impact of the concentration of drug binding plasma proteins on drug distribution according to Øie-Tozer's model. Xenobiotica 2015; 46:307-14. [PMID: 26259025 DOI: 10.3109/00498254.2015.1074764] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. New equations have been developed from an updated version of Øie-Tozer's model expressing how the free concentration and volume of distribution change in relation to changes in the concentration of drug binding plasma proteins. This updated model accommodates more than one drug binding plasma protein to contribute to the plasma protein binding. 2. Demonstrations of the model show that variability in the concentration of one plasma protein has considerably less impact on the free drug concentration and volume of distribution if other plasma proteins contribute to binding, than if they don't.
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Affiliation(s)
- Andreas Mats Svennebring
- a Department of Pharmaceutical Biosciences, Division of Pharmaceutical Bioinformatics , Biomedical Centre, Uppsala University , Uppsala , Sweden
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