1
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Wang H, Ding Y, Zhang Y, Shi X, Liu H. In situ decrypting plasmonic nanoparticle size-controlled phosphorylation of epidermal growth factor receptor in living cells. Chem Commun (Camb) 2023. [PMID: 37439663 DOI: 10.1039/d3cc02154h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Recently, interaction between epidermal growth factor receptor (EGFR) and EGFR-targeted nanoprobes is a hot topic. Here, we use dark field microscope (DFM) observe different aggregations of EGFR-targeted nanoprobes in diverticulum. Different aggregation states are related to phosphorylation of EGFR. EGFR phosphorylation can be adjusted by gold nanoparticles (GNPs) size.
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Affiliation(s)
- Hongyan Wang
- First Affiliated Hospital of Anhui Medical University, Hefei 230000, China
| | - Yan Ding
- First Affiliated Hospital of Anhui Medical University, Hefei 230000, China
| | - Yu Zhang
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China.
| | - Xiaoqi Shi
- First Affiliated Hospital of Anhui Medical University, Hefei 230000, China
| | - Honglin Liu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China.
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2
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Blondy T, Poly J, Linot C, Boucard J, Allard-Vannier E, Nedellec S, Hulin P, Hénoumont C, Larbanoix L, Muller RN, Laurent S, Ishow E, Blanquart C. Impact of RAFT chain transfer agents on the polymeric shell density of magneto-fluorescent nanoparticles and their cellular uptake. NANOSCALE 2022; 14:5884-5898. [PMID: 35373226 DOI: 10.1039/d1nr06769a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The impact of nanoparticle surface chemistry on cell interactions and especially cell uptake has become evident over the last few years in nanomedicine. Since PEG polymers have proved to be ideal tools for attaining stealthiness and favor escape from the in vivo mononuclear phagocytotic system, the accurate control of their geometry is of primary importance and can be achieved through reversible addition-fragmentation transfer (RAFT) polymerization. In this study, we demonstrate that the residual groups of the chain transfer agents (CTAs) introduced in the main chain exert a significant impact on the cellular internalization of functionalized nanoparticles. High-resolution magic angle spinning 1H NMR spectroscopy and fluorescence spectroscopy permitted by the magneto-fluorescence properties of nanoassemblies (NAs) revealed the compaction of the PEG comb-like shell incorporating CTAs with a long alkyl chain, without changing the overall surface potential. As a consequence of the capability of alkyl units to self-assemble at the NA surface while hardly contributing more than 0.5% to the total polyelectrolyte weight, denser PEGylated NAs showed notably less internalization in all cells of the tumor microenvironment (tumor cells, macrophages and healthy cells). Interestingly, such differentiated uptake is also observed between pro-inflammatory M1-like and immunosuppressive M2-like macrophages, with the latter more efficiently phagocytizing NAs coated with a less compact PEGylated shell. In contrast, the NA diffusion inside multicellular spheroids, used to mimic solid tumors, appeared to be independent of the NA coating. These results provide a novel effort-saving approach where the sole variation of the chemical nature of CTAs in RAFT PEGylated polymers strikingly modulate the cell uptake of nanoparticles upon the organization of their surface coating and open the pathway toward selectively addressing macrophage populations for cancer immunotherapy.
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Affiliation(s)
- Thibaut Blondy
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
| | - Julien Poly
- IS2M-UMR CNRS 7361, Université de Haute Alsace, 15 rue Jean Starcky, 68057 Mulhouse, France
| | - Camille Linot
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
| | - Joanna Boucard
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
- Nantes Université, CNRS, CEISAM, UMR 6230, F-44000 Nantes, France.
| | - Emilie Allard-Vannier
- EA 6295 'Nanomédicaments et Nanosondes', Université de Tours, Tours, F-37200, France
| | - Steven Nedellec
- Nantes Université, INSERM, UMS 016, CNRS, UMS 3556, F-44000 Nantes, France
| | - Phillipe Hulin
- Nantes Université, INSERM, UMS 016, CNRS, UMS 3556, F-44000 Nantes, France
| | - Céline Hénoumont
- Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons-Hainaut, B-7000 Mons, Belgium
| | - Lionel Larbanoix
- Center for Microscopy and Molecular Imaging, 8 rue Adrienne Bolland à Gosselies, 6041 Gosselies, Belgium
| | - Robert N Muller
- Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons-Hainaut, B-7000 Mons, Belgium
| | - Sophie Laurent
- Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons-Hainaut, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging, 8 rue Adrienne Bolland à Gosselies, 6041 Gosselies, Belgium
| | - Eléna Ishow
- Nantes Université, CNRS, CEISAM, UMR 6230, F-44000 Nantes, France.
| | - Christophe Blanquart
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
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3
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Ulfo L, Cantelli A, Petrosino A, Costantini PE, Nigro M, Starinieri F, Turrini E, Zadran SK, Zuccheri G, Saporetti R, Di Giosia M, Danielli A, Calvaresi M. Orthogonal nanoarchitectonics of M13 phage for receptor targeted anticancer photodynamic therapy. NANOSCALE 2022; 14:632-641. [PMID: 34792088 DOI: 10.1039/d1nr06053h] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Photodynamic therapy (PDT) represents a promising therapeutic modality for cancer. Here we used an orthogonal nanoarchitectonics approach (genetic/chemical) to engineer M13 bacteriophages as targeted vectors for efficient photodynamic killing of cancer cells. M13 was genetically refactored to display on the phage tip a peptide (SYPIPDT) able to bind the epidermal growth factor receptor (EGFR). The refactored M13EGFR phages demonstrated EGFR-targeted tropism and were internalized by A431 cancer cells, that overexpress EGFR. Using an orthogonal approach to the genetic display, M13EGFR phages were then chemically modified, conjugating hundreds of Rose Bengal (RB) photosensitizing molecules on the capsid surface, without affecting the selective recognition of the SYPIPDT peptides. Upon internalization, the M13EGFR-RB derivatives generated intracellularly reactive oxygen species, activated by an ultralow intensity white light irradiation. The killing activity of cancer cells is observed at picomolar concentrations of the M13EGFR phage.
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Affiliation(s)
- Luca Ulfo
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Andrea Cantelli
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Francesco Selmi 2, 40126 Bologna, Italy.
| | - Annapaola Petrosino
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Paolo Emidio Costantini
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Michela Nigro
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Francesco Starinieri
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Eleonora Turrini
- Dipartimento di Scienze per la Qualità della Vita, Alma Mater Studiorum-Università di Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
| | - Suleman Khan Zadran
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Giampaolo Zuccheri
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Roberto Saporetti
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Francesco Selmi 2, 40126 Bologna, Italy.
| | - Matteo Di Giosia
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Francesco Selmi 2, 40126 Bologna, Italy.
| | - Alberto Danielli
- Dipartimento di Farmacia e Biotecnologie, Alma Mater Studiorum - Università di Bologna, via Francesco Selmi 3, 40126 Bologna, Italy.
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Francesco Selmi 2, 40126 Bologna, Italy.
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4
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Nguyen PV, Hervé-Aubert K, Chourpa I, Allard-Vannier E. Active targeting strategy in nanomedicines using anti-EGFR ligands - A promising approach for cancer therapy and diagnosis. Int J Pharm 2021; 609:121134. [PMID: 34571073 DOI: 10.1016/j.ijpharm.2021.121134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/09/2021] [Accepted: 09/22/2021] [Indexed: 12/21/2022]
Abstract
As active targeting using nanomedicines establishes itself as a strategy of choice in cancer therapy, several target receptors or ligands overexpressed in cancer cells have been identified and exploited. Among them, the epidermal growth factor receptor (EGFR) has emerged as one of the most promising oncomarkers for active targeting nanomedicines due to its overexpression and its active involvement in a wide range of cancer types. Henceforth, many novel EGFR-targeted nanomedicines for cancer therapy have been developed, giving encouraging results both in vitro and in vivo. This review focuses on different applications of such medicines in oncotherapy. On an important note, the contribution of EGFR-targeting ligands to final therapy efficacy along with current challenges and possible solutions or alternatives are emphasized.
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Affiliation(s)
- Phuoc Vinh Nguyen
- EA6295 Nanomédicaments et Nanosondes, Université de Tours, Tours, France
| | - Katel Hervé-Aubert
- EA6295 Nanomédicaments et Nanosondes, Université de Tours, Tours, France
| | - Igor Chourpa
- EA6295 Nanomédicaments et Nanosondes, Université de Tours, Tours, France
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5
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Nanomedicines functionalized with anti-EGFR ligands for active targeting in cancer therapy: Biological strategy, design and quality control. Int J Pharm 2021; 605:120795. [PMID: 34119579 DOI: 10.1016/j.ijpharm.2021.120795] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/28/2021] [Accepted: 06/07/2021] [Indexed: 02/06/2023]
Abstract
Recently, active targeting using nanocarriers with biological ligands has emerged as a novel strategy for improving the delivery of therapeutic and/or imaging agents to tumor cells. The presence of active targeting moieties on the surface of nanomedicines has been shown to play an important role in enhancing their accumulation in tumoral cells and tissues versus healthy ones. This property not only helps to increase the therapeutic index but also to minimize possible side effects of the designed nanocarriers. Since the overexpression of epidermal growth factor receptors (EGFR) is a common occurrence linked to the progression of a broad variety of cancers, the potential application of anti-EGFR immunotherapy and EGFR-targeting ligands in active targeting nanomedicines is getting increasing attention. Henceforth, the EGFR-targeted nanomedicines were extensively studied in vitro and in vivo but exhibited both satisfactory and disappointing results, depending on used protocols. This review is designed to give an overview of a variety of EGFR-targeting ligands available for nanomedicines, how to conjugate them onto the surface of nanoparticles, and the main analytical methods to confirm this successful conjugation.
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6
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7
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He J, Li C, Ding L, Huang Y, Yin X, Zhang J, Zhang J, Yao C, Liang M, Pirraco RP, Chen J, Lu Q, Baldridge R, Zhang Y, Wu M, Reis RL, Wang Y. Tumor Targeting Strategies of Smart Fluorescent Nanoparticles and Their Applications in Cancer Diagnosis and Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902409. [PMID: 31369176 DOI: 10.1002/adma.201902409] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/30/2019] [Indexed: 06/10/2023]
Abstract
Advantages such as strong signal strength, resistance to photobleaching, tunable fluorescence emissions, high sensitivity, and biocompatibility are the driving forces for the application of fluorescent nanoparticles (FNPs) in cancer diagnosis and therapy. In addition, the large surface area and easy modification of FNPs provide a platform for the design of multifunctional nanoparticles (MFNPs) for tumor targeting, diagnosis, and treatment. In order to obtain better targeting and therapeutic effects, it is necessary to understand the properties and targeting mechanisms of FNPs, which are the foundation and play a key role in the targeting design of nanoparticles (NPs). Widely accepted and applied targeting mechanisms such as enhanced permeability and retention (EPR) effect, active targeting, and tumor microenvironment (TME) targeting are summarized here. Additionally, a freshly discovered targeting mechanism is introduced, termed cell membrane permeability targeting (CMPT), which improves the tumor-targeting rate from less than 5% of the EPR effect to more than 50%. A new design strategy is also summarized, which is promising for future clinical targeting NPs/nanomedicines design. The targeting mechanism and design strategy will inspire new insights and thoughts on targeting design and will speed up precision medicine and contribute to cancer therapy and early diagnosis.
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Affiliation(s)
- Jiuyang He
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Chenchen Li
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Lin Ding
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yanan Huang
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Xuelian Yin
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Junfeng Zhang
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Jian Zhang
- Universal Medical Imaging Diagnostic Research Center, Shanghai, 200233, P. R. China
| | - Chenjie Yao
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA, 02115, USA
| | - Minmin Liang
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Rogério P Pirraco
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's PT Government Associate Lab, 4805, Braga/Guimarães, Portugal
| | - Jie Chen
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Quan Lu
- Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA, 02115, USA
| | - Ryan Baldridge
- Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yong Zhang
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Department of Biomedical Engineering, National University of Singapore, Singapore, 119077, Singapore
| | - Minghong Wu
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
- ICVS/3B's PT Government Associate Lab, 4805, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, 4805-017, Barco, Guimarães, Portugal
| | - Yanli Wang
- Tumor Precision Targeting Research Center, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P. R. China
- Harvard T. H. Chan School of Public Health, Harvard University, Boston, MA, 02115, USA
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8
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He J, Jiang X, Ling P, Sun J, Gao F. Ratiometric Sensing for Alkaline Phosphatase Based on Two Independent Signals from in Situ Formed Nanohybrids of Semiconducting Polymer Nanoparticles and MnO 2 Nanosheets. ACS OMEGA 2019; 4:8282-8289. [PMID: 31459914 PMCID: PMC6648444 DOI: 10.1021/acsomega.9b00702] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 04/11/2019] [Indexed: 05/15/2023]
Abstract
Ratiometric sensing systems transduced through independent analyte-sensitive response signals, which are simultaneously obtained from a single material, are highly desired to improve sensing reliability and sensitivity. In this study, a dual-model ratiometric sensing system with fluorescence and second-order light scattering (SOS) as transducing signals has been designed for the ratiometric detection of alkaline phosphatase (ALP). Semiconducting polymer nanoparticles (SPNs) made of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1',3}-thiadiazole)] are prepared and used as reducing and stabilizing agents to prepare MnO2 nanosheets in situ through the reduction of KMnO4. The formed SPNs@MnO2 nanohybrids exhibit independent fluorescence and SOS response to ALP by using l-ascorbic acid 2-phosphate trisodium salt as the enzyme substrate. Benefiting from the simultaneous availability of fluorescence and SOS signals under the same excitation, a ratiometric probe has been constructed successfully for ALP sensing. Under optimal conditions, the SPNs@MnO2 nanohybrids for ALP detection show a good linear detection range from 0.1 to 9.0 U L-1 with a detection limit of 0.034 U L-1. Additionally, a visual and portable sensing device for ALP detection is also constructed based on the fluorescent performances of the SPNs@MnO2 nanohybrids. We believe the proposed method with the in situ preparation of SPN-based hybrid probes via the reducing ability of SPNs will pave a new way for the construction of multifunctional sensing materials in chemo-/biosensing applications.
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Affiliation(s)
- Jiajia He
- Laboratory
of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory
of Chemo/Biosensing, and Laboratory of Biosensing and Bioimaging (LOBAB), College
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, P. R. China
| | - Xuekai Jiang
- Laboratory
of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory
of Chemo/Biosensing, and Laboratory of Biosensing and Bioimaging (LOBAB), College
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, P. R. China
| | - Pinghua Ling
- Laboratory
of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory
of Chemo/Biosensing, and Laboratory of Biosensing and Bioimaging (LOBAB), College
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, P. R. China
| | - Junyong Sun
- Laboratory
of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory
of Chemo/Biosensing, and Laboratory of Biosensing and Bioimaging (LOBAB), College
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, P. R. China
- E-mail: . (J.S.)
| | - Feng Gao
- Laboratory
of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory
of Chemo/Biosensing, and Laboratory of Biosensing and Bioimaging (LOBAB), College
of Chemistry and Materials Science, Anhui
Normal University, Wuhu 241002, P. R. China
- E-mail: . Phone/Fax: +86-553-3937137 (F.G.)
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9
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Caponetti V, Trzcinski JW, Cantelli A, Tavano R, Papini E, Mancin F, Montalti M. Self-Assembled Biocompatible Fluorescent Nanoparticles for Bioimaging. Front Chem 2019; 7:168. [PMID: 30984740 PMCID: PMC6447614 DOI: 10.3389/fchem.2019.00168] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/05/2019] [Indexed: 12/31/2022] Open
Abstract
Fluorescence is a powerful tool for mapping biological events in real-time with high spatial resolution. Ultra-bright probes are needed in order to achieve high sensitivity: these probes are typically obtained by gathering a huge number of fluorophores in a single nanoparticle (NP). Unfortunately this assembly produces quenching of the fluorescence because of short-range intermolecular interactions. Here we demonstrate that rational structural modification of a well-known molecular fluorophore N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) (NBD) produces fluorophores that self-assemble in nanoparticles in the biocompatible environment without any dramatic decrease of the fluorescence quantum yield. Most importantly, the resulting NP show, in an aqueous environment, a brightness which is more than six orders of magnitude higher than the molecular component in the organic solvent. Moreover, the NP are prepared by nanoprecipitation and they are stabilized only via non-covalent interaction, they are surprisingly stable and can be observed as individual bright spots freely diffusing in solution at a concentration as low as 1 nM. The suitability of the NP as biocompatible fluorescent probes was demonstrated in the case of HeLa cells by fluorescence confocal microscopy and MTS assays.
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Affiliation(s)
- Valeria Caponetti
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
| | - Jakub W Trzcinski
- Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy
| | - Andrea Cantelli
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
| | - Regina Tavano
- Dipartimento di Scienze Biomediche, Università di Padova, Padova, Italy
| | - Emanuele Papini
- Dipartimento di Scienze Biomediche, Università di Padova, Padova, Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy
| | - Marco Montalti
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
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10
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Vill R, Gülcher J, Khalatur P, Wintergerst P, Stoll A, Mourran A, Ziener U. Supramolecular polymerization: challenges and advantages of various methods in assessing the aggregation mechanism. NANOSCALE 2019; 11:663-674. [PMID: 30565631 DOI: 10.1039/c8nr08472f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Oligothiophenes with branched alkyl end groups show distinct aggregation in organic solvents. The process of supramolecular polymerization is assessed by three different methods (UV-vis absorption and fluorescence emission spectroscopy and dynamic light scattering) to exclude artifacts. An apparent dependence of the degree of aggregation on the concentration of the oligomers is observed. Above the upper limit of concentration (a lower micromolar range for the present class of compounds), experimental data delivered conflicting results and the concentration should not therefore be exceeded. Scanning force microscopy and molecular dynamics simulations confirm the formation of one-dimensional aggregates with presumably helical arrangement of the achiral monomers.
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Affiliation(s)
- Roman Vill
- Institute of Organic Chemistry III-Macromolecular Chemistry and Organic Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
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11
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Ma H, Qin Y, Yang Z, Yang M, Ma Y, Yin P, Yang Y, Wang T, Lei Z, Yao X. Positively Charged Hyperbranched Polymers with Tunable Fluorescence and Cell Imaging Application. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20064-20072. [PMID: 29693378 DOI: 10.1021/acsami.8b05073] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fluorescence-tunable materials are becoming increasingly attractive because of their potential applications in optics, electronics, and biomedical technology. Herein, a multicolor molecular pixel system is realized using a simple copolymerization method. Bleeding of two complementary colors from blue and yellow fluorescence segments reproduced serious multicolor fluorescence materials. Interestingly, the emission colors of the polymers can be fine-tuned in the solid state, solution phase, and in hydrogel state. More importantly, the positive fluorescent polymers exhibited cell-membrane permeable ability and were found to accumulate on the cell nucleus, exhibiting remarkable selectivity to give bright fluorescence. The DNA/RNA selectivity experiments in vitro and in vivo verified that [tris(4-(pyridin-4-yl)phenyl)amine]-[1,8-dibromooctane] has prominent selectivity to DNA over RNA inside cells.
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Affiliation(s)
- Hengchang Ma
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Yanfang Qin
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Zengming Yang
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Manyi Yang
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Yucheng Ma
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Pei Yin
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Yuan Yang
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Tao Wang
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Ziqiang Lei
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
| | - Xiaoqiang Yao
- Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering , Northwest Normal University , Lanzhou 730070 , PR China
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