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Kowalik A, Majerek M, Mrowiec K, Solich J, Faron-Górecka A, Woźnicka O, Dziedzicka-Wasylewska M, Łukasiewicz S. Dopamine D2 and Serotonin 5-HT1A Dimeric Receptor-Binding Monomeric Antibody scFv as a Potential Ligand for Carrying Drugs Targeting Selected Areas of the Brain. Biomolecules 2022; 12:biom12060749. [PMID: 35740874 PMCID: PMC9221303 DOI: 10.3390/biom12060749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 05/23/2022] [Indexed: 11/16/2022] Open
Abstract
Targeted therapy uses multiple ways of ensuring that the drug will be delivered to the desired site. One of these ways is an encapsulation of the drug and functionalization of the surface. Among the many molecules that can perform such a task, the present work focused on the antibodies of single-chain variable fragments (scFvs format). We studied scFv, which specifically recognizes the dopamine D2 and serotonin 5-HT1A receptor heteromers. The scFvD2–5-HT1A protein was analyzed biochemically and biologically, and the obtained results indicated that the antibody is properly folded and non-toxic and can be described as low-immunogenic. It is not only able to bind to the D2–5-HT1A receptor heteromer, but it also influences the cAMP signaling pathway and—when surfaced on nanogold particles—it can cross the blood–brain barrier in in vitro models. When administered to mice, it decreased locomotor activity, matching the effect induced by clozapine. Thus, we are strongly convinced that scFvD2–5-HT1A, which was a subject of the present investigation, is a promising targeting ligand with the potential for the functionalization of nanocarriers targeting selected areas of the brain.
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Affiliation(s)
- Agata Kowalik
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (A.K.); (M.M.); (K.M.); (M.D.-W.)
| | - Mateusz Majerek
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (A.K.); (M.M.); (K.M.); (M.D.-W.)
| | - Krzysztof Mrowiec
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (A.K.); (M.M.); (K.M.); (M.D.-W.)
| | - Joanna Solich
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Science, 31-343 Krakow, Poland; (J.S.); (A.F.-G.)
| | - Agata Faron-Górecka
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Science, 31-343 Krakow, Poland; (J.S.); (A.F.-G.)
| | - Olga Woźnicka
- Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387 Krakow, Poland;
| | - Marta Dziedzicka-Wasylewska
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (A.K.); (M.M.); (K.M.); (M.D.-W.)
- Department of Pharmacology, Maj Institute of Pharmacology, Polish Academy of Science, 31-343 Krakow, Poland; (J.S.); (A.F.-G.)
| | - Sylwia Łukasiewicz
- Department of Physical Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (A.K.); (M.M.); (K.M.); (M.D.-W.)
- Correspondence: ; Tel.: +48-012-664-6134; Fax: +48-012-664-6902
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A Therapeutically Active Minibody Exhibits an Antiviral Activity in Oseltamivir-Resistant Influenza-Infected Mice via Direct Hydrolysis of Viral RNAs. Viruses 2022; 14:v14051105. [PMID: 35632846 PMCID: PMC9146509 DOI: 10.3390/v14051105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/17/2022] Open
Abstract
Emerging Oseltamivir-resistant influenza strains pose a critical public health threat due to antigenic shifts and drifts. We report an innovative strategy for controlling influenza A infections by use of a novel minibody of the 3D8 single chain variable fragment (scFv) showing intrinsic viral RNA hydrolyzing activity, cell penetration activity, and epidermal cell penetration ability. In this study, we examined 3D8 scFv’s antiviral activity in vitro on three different H1N1 influenza strains, one Oseltamivir-resistant (A/Korea/2785/2009pdm) strain, and two Oseltamivir-sensitive (A/PuertoRico/8/1934 and A/X-31) strains. Interestingly, the 3D8 scFv directly digested viral RNAs in the ribonucleoprotein complex. scFv’s reduction of influenza viral RNA including viral genomic RNA, complementary RNA, and messenger RNA during influenza A infection cycles indicated that this minibody targets all types of viral RNAs during the early, intermediate, and late stages of the virus’s life cycle. Moreover, we further addressed the antiviral effects of 3D8 scFv to investigate in vivo clinical outcomes of influenza-infected mice. Using both prophylactic and therapeutic treatments of intranasal administered 3D8 scFv, we found that Oseltamivir-resistant H1N1-infected mice showed 90% (prophylactic effects) and 40% (therapeutic effects) increased survival rates, respectively, compared to the control group. The pathological signs of influenza A in the lung tissues, and quantitative analyses of the virus proliferations supported the antiviral activity of the 3D8 single chain variable fragment. Taken together, these results demonstrate that 3D8 scFv has antiviral therapeutic potentials against a wide range of influenza A viruses via the direct viral RNA hydrolyzing activity.
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Zhang Y, Song Y, Ren H, Zeng Q, Yuan Y, Xia L, Wei Z. Preparation of a Single-Chain Antibody against Nucleocapsid Protein of Porcine Deltacoronavirus by Phage Display Technology. Viruses 2022; 14:v14040772. [PMID: 35458502 PMCID: PMC9030028 DOI: 10.3390/v14040772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 11/30/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV) mainly causes severe diarrhea and intestinal pathological damage in piglets and poses a serious threat to pig farms. Currently, no effective reagents or vaccines are available to control PDCoV infection. Single-chain fragment variable (scFv) antibodies can effectively inhibit virus infection and may be a potential therapeutic reagent for PDCoV treatment. In this study, a porcine phage display antibody library from the peripheral blood lymphocytes of piglets infected with PDCoV was constructed and used to select PDCoV-specific scFv. The library was screened with four rounds of biopanning using the PDCoV N protein, and the colony with the highest affinity to the PDCoV N protein was obtained (namely, N53). Then, the N53-scFv gene fragment was cloned into plasmid pFUSE-hIgG-Fc2 and expressed in HEK-293T cells. The scFv-Fc antibody N53 (namely, scFv N53) was purified using Protein A-sepharose. The reactive activity of the purified antibody with the PDCoV N protein was confirmed by indirect enzyme-linked immunosorbent assay (ELISA), western blot and indirect immunofluorescence assay (IFA). Finally, the antigenic epitopes that the scFv N53 recognized were identified by a series of truncated PDCoV N proteins. The amino acid residues 82GELPPNDTPATTRVT96 of the PDCoV N protein were verified as the minimal epitope that can be recognized by the scFv-Fc antibody N53. In addition, the interaction between the scFv-Fc antibody N53 and the PDCoV N protein was further analyzed by molecule docking. In conclusion, our research provides some references for the treatment and prevention of PDCoV.
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Affiliation(s)
- Yixuan Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Yue Song
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Molecule Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, China
| | - Haojie Ren
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Quan Zeng
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Yixin Yuan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Lu Xia
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Correspondence: (L.X.); (Z.W.)
| | - Zhanyong Wei
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Key Laboratory for Animal-Derived Food Safety of Henan Province, Henan Agricultural University, Zhengzhou 450046, China
- Correspondence: (L.X.); (Z.W.)
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Lee G, Budhathoki S, Lee GY, Oh KJ, Ham YK, Kim YJ, Lim YR, Hoang PT, Lee Y, Lim SW, Kim JM, Cho S, Kim TH, Song JW, Lee S, Kim WK. Broad-Spectrum Antiviral Activity of 3D8, a Nucleic Acid-Hydrolyzing Single-Chain Variable Fragment (scFv), Targeting SARS-CoV-2 and Multiple Coronaviruses In Vitro. Viruses 2021; 13:650. [PMID: 33918914 PMCID: PMC8068894 DOI: 10.3390/v13040650] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 11/25/2022] Open
Abstract
The virus behind the current pandemic, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the etiology of novel coronavirus disease (COVID-19) and poses a critical public health threat worldwide. Effective therapeutics and vaccines against multiple coronaviruses remain unavailable. Single-chain variable fragment (scFv), a recombinant antibody, exhibits broad-spectrum antiviral activity against DNA and RNA viruses owing to its nucleic acid-hydrolyzing property. The antiviral activity of 3D8 scFv against SARS-CoV-2 and other coronaviruses was evaluated in Vero E6 cell cultures. Viral growth was quantified with quantitative RT-qPCR and plaque assay. The nucleic acid-hydrolyzing activity of 3D8 was assessed through abzyme assays of in vitro viral transcripts and cell viability was determined by MTT assay. We found that 3D8 inhibited the replication of SARS-CoV-2, human coronavirus OC43 (HCoV-OC43), and porcine epidemic diarrhea virus (PEDV). Our results revealed the prophylactic and therapeutic effects of 3D8 scFv against SARS-CoV-2 in Vero E6 cells. Immunoblot and plaque assays showed the reduction of coronavirus nucleoproteins and infectious particles, respectively, in 3D8 scFv-treated cells. These data demonstrate the broad-spectrum antiviral activity of 3D8 against SARS-CoV-2 and other coronaviruses. Thus, it could be considered a potential antiviral countermeasure against SARS-CoV-2 and zoonotic coronaviruses.
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Affiliation(s)
- Gunsup Lee
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
| | - Shailesh Budhathoki
- Department of Microbiology, College of Medicine, Hallym University, Chuncheon 24252, Korea;
| | - Geum-Young Lee
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea; (G.-Y.L.); (S.C.); (J.-W.S.)
| | - Kwang-ji Oh
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
| | - Yeon Kyoung Ham
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
| | - Young-Jun Kim
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
| | - Ye Rin Lim
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
- Institute of Medical Science, College of Medicine, Hallym University, Chuncheon 24252, Korea
| | - Phuong Thi Hoang
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea; (P.T.H.); (Y.L.)
| | - Yongjun Lee
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea; (P.T.H.); (Y.L.)
| | - Seok-Won Lim
- Animal Functional Genomics & Bioinformatics Lab., Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea; (S.-W.L.); (J.-M.K.)
| | - Jun-Mo Kim
- Animal Functional Genomics & Bioinformatics Lab., Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea; (S.-W.L.); (J.-M.K.)
| | - Seungchan Cho
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea; (G.-Y.L.); (S.C.); (J.-W.S.)
| | - Tai-Hyun Kim
- R&D Center, Novelgen Co., Ltd., 77, Changnyong-daero 256 beon-gil, Yeongtong-gu, Suwon-si 16229, Korea; (G.L.); (K.-j.O.); (Y.K.H.); (Y.-J.K.); (Y.R.L.); (T.-H.K.)
| | - Jin-Won Song
- Department of Microbiology, Korea University College of Medicine, Seoul 02841, Korea; (G.-Y.L.); (S.C.); (J.-W.S.)
- BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Korea
| | - Sukchan Lee
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea; (P.T.H.); (Y.L.)
| | - Won-Keun Kim
- Department of Microbiology, College of Medicine, Hallym University, Chuncheon 24252, Korea;
- Institute of Medical Science, College of Medicine, Hallym University, Chuncheon 24252, Korea
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Gurunathan S, Qasim M, Choi Y, Do JT, Park C, Hong K, Kim JH, Song H. Antiviral Potential of Nanoparticles-Can Nanoparticles Fight Against Coronaviruses? NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1645. [PMID: 32825737 PMCID: PMC7557932 DOI: 10.3390/nano10091645] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/08/2020] [Accepted: 08/18/2020] [Indexed: 12/12/2022]
Abstract
Infectious diseases account for more than 20% of global mortality and viruses are responsible for about one-third of these deaths. Highly infectious viral diseases such as severe acute respiratory (SARS), Middle East respiratory syndrome (MERS) and coronavirus disease (COVID-19) are emerging more frequently and their worldwide spread poses a serious threat to human health and the global economy. The current COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). As of 27 July 2020, SARS-CoV-2 has infected over 16 million people and led to the death of more than 652,434 individuals as on 27 July 2020 while also causing significant economic losses. To date, there are no vaccines or specific antiviral drugs to prevent or treat COVID-19. Hence, it is necessary to accelerate the development of antiviral drugs and vaccines to help mitigate this pandemic. Non-Conventional antiviral agents must also be considered and exploited. In this regard, nanoparticles can be used as antiviral agents for the treatment of various viral infections. The use of nanoparticles provides an interesting opportunity for the development of novel antiviral therapies with a low probability of developing drug resistance compared to conventional chemical-based antiviral therapies. In this review, we first discuss viral mechanisms of entry into host cells and then we detail the major and important types of nanomaterials that could be used as antiviral agents. These nanomaterials include silver, gold, quantum dots, organic nanoparticles, liposomes, dendrimers and polymers. Further, we consider antiviral mechanisms, the effects of nanoparticles on coronaviruses and therapeutic approaches of nanoparticles. Finally, we provide our perspective on the future of nanoparticles in the fight against viral infections.
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Affiliation(s)
- Sangiliyandi Gurunathan
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Muhammad Qasim
- Center of Bioengineering and Nanomedicine, Department of Food Science, University of Otago, Dunedin 9054, New Zealand;
| | - Youngsok Choi
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Jeong Tae Do
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Kwonho Hong
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea; (S.G.); (Y.C.); (J.T.D.); (C.P.); (K.H.); (J.-H.K.)
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Chang L, Wu H, He X, Chen L, Zhang Y. A highly sensitive fluorescent turn-on biosensor for glycoproteins based on boronic acid functional polymer capped Mn-doped ZnS quantum dots. Anal Chim Acta 2017; 995:91-98. [DOI: 10.1016/j.aca.2017.09.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 11/24/2022]
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Lee J, Kim M, Seo Y, Lee Y, Park H, Byun SJ, Kwon MH. The catalytic activity of a recombinant single chain variable fragment nucleic acid-hydrolysing antibody varies with fusion tag and expression host. Arch Biochem Biophys 2017; 633:110-117. [PMID: 28888872 DOI: 10.1016/j.abb.2017.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 12/12/2022]
Abstract
The antigen-binding properties of single chain Fv antibodies (scFvs) can vary depending on the position and type of fusion tag used, as well as the host cells used for expression. The issue is even more complicated with a catalytic scFv antibody that binds and hydrolyses a specific antigen. Herein, we investigated the antigen-binding and -hydrolysing activities of the catalytic anti-nucleic acid antibody 3D8 scFv expressed in Escherichia coli or HEK293f cells with or without additional amino acid residues at the N- and C-termini. DNA-binding activity was retained in all recombinant forms. However, the DNA-hydrolysing activity varied drastically between forms. The DNA-hydrolysing activity of E. coli-derived 3D8 scFvs was not affected by the presence of a C-terminal human influenza haemagglutinin (HA) or His tag. By contrast, the activity of HEK293f-derived 3D8 scFvs was completely lost when additional residues were included at the N-terminus and/or when a His tag was incorporated at the C-terminus, whereas a HA tag at the C-terminus did not diminish activity. Thus, we demonstrate that the antigen-binding and catalytic activities of a catalytic antibody can be separately affected by the presence of additional residues at the N- and C-termini, and by the host cell type.
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Affiliation(s)
- Joungmin Lee
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea
| | - Minjae Kim
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea
| | - Youngsil Seo
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea
| | - Yeonjin Lee
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea
| | - Hyunjoon Park
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea
| | - Sung June Byun
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, 1500, Kongjwipatjwi-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, South Korea
| | - Myung-Hee Kwon
- Department of Biomedical Sciences, Graduate School, Ajou University, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea; Department of Microbiology, Ajou University School of Medicine, 206 World Cup-ro, Yeongtong-gu, Suwon 16499, South Korea.
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Wang S, Ye J, Li X, Liu Z. Boronate Affinity Fluorescent Nanoparticles for Förster Resonance Energy Transfer Inhibition Assay of cis-Diol Biomolecules. Anal Chem 2016; 88:5088-96. [PMID: 27089186 DOI: 10.1021/acs.analchem.5b04507] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Förster resonance energy transfer (FRET) has been essential for many applications, in which an appropriate donor-acceptor pair is the key. Traditional dye-to-dye combinations remain the working horses but are rather nonspecifically susceptive to environmental factors (such as ionic strength, pH, oxygen, etc.). Besides, to obtain desired selectivity, functionalization of the donor or acceptor is essential but usually tedious. Herein, we present fluorescent poly(m-aminophenylboronic acid) nanoparticles (poly(mAPBA) NPs) synthesized via a simple procedure and demonstrate a FRET scheme with suppressed environmental effects for the selective sensing of cis-diol biomolecules. The NPs exhibited stable fluorescence properties, resistance to environmental factors, and a Förster distance comparable size, making them ideal donor for FRET applications. By using poly(mAPBA) NPs and adenosine 5'-monophosphate modified graphene oxide (AMP-GO) as a donor and an acceptor, respectively, an environmental effects-suppressed boronate affinity-mediated FRET system was established. The fluorescence of poly(mAPBA) NPs was quenched by AMP-GO while it was restored when a competing cis-diol compounds was present. The FRET system exhibited excellent selectivity and improved sensitivity toward cis-diol compounds. Quantitative inhibition assay of glucose in human serum was demonstrated. As many cis-diol compounds such as sugars and glycoproteins are biologically and clinically significant, the FRET scheme presented herein could find more promising applications.
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Affiliation(s)
- Shuangshou Wang
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Jin Ye
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Xinglin Li
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, China
| | - Zhen Liu
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, China
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