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Rees SWP, Rees TA, van Rensburg M, Walker CS, Pilkington LI, Barker D. Investigation Into Novel Mukanadin B, Mukanadin D and Mukanadin F Derivatives as Antagonists of 5-HT 1A Signalling. ChemMedChem 2024; 19:e202400102. [PMID: 38661010 DOI: 10.1002/cmdc.202400102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 04/26/2024]
Abstract
Marine bromopyrrole alkaloids are a diverse family of natural products with a large array of biological applications. The mukanadin family is a group of molecules consisting of seven members (mukanadin A-G) that possess a range of biological activities. Inhibition of serotonergic signaling has been demonstrated by mukanadin B derivatives, presenting this chemical scaffold as a candidate for further SAR exploration. A library of thirteen novel mukanadin B and D derivatives with structural variation targeted at the pyrrole ring, central linker and hydantoin ring, were synthesized. These analogues were subsequently assessed for serotonergic antagonism, in addition to natural products, mukanadin B, D, F and 9-hydroxy mukanadin B. A collection of compounds exhibited significant 5-HT1A signaling, including five of the novel derivatives and two of the naturally occurring bromopyrroles, mukanadin B and F. Particular SAR information could be determined from these results, such as modification of the pyrrole ring being a well-tolerated strategy for improving serotonergic inhibition. Other changes to the pharmacophore led to significant reduction in activity such as saturation of the linker region, or no conclusive improvement in inhibitory activity such as a 9-OH group or replacement of the hydantoin ring with a triazole moiety.
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Affiliation(s)
- Shaun W P Rees
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Tayla A Rees
- School of Biological Science, University of Auckland, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | | | - Christopher S Walker
- School of Biological Science, University of Auckland, Auckland, 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Lisa I Pilkington
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
- Te Pūnaha Matatini, Auckland, 1142, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington, 6012, New Zealand
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2
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Zhang N, Chang H, Miao R, Liu T, Ding L, Fang Y. Structure-activity relationships of aniline-based squaraines for distinguishable staining and bright two-photon fluorescence bioimaging in plant cells. J Mater Chem B 2024; 12:5350-5359. [PMID: 38738315 DOI: 10.1039/d4tb00400k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
An organelle-selective vision provides insights into the physiological response of plants and crops to environmental stresses in sustainable agriculture ecosystems. Biological applications often require two-photon excited fluorophores with low phototoxicity, high brightness, deep penetration, and tuneable cell entry. We obtained three aniline-based squaraines (SQs) tuned from hydrophobic to hydrophilic characteristics by modifying terminal pendant groups and substituents, and investigated their steady-state absorption and far-red-emitting fluorescence properties. The SQs exhibited two-photon absorption (2PA) ranging from 750 to 870 nm within the first biological spectral window; their structure-property relationships, corresponding to the 2PA cross sections (δ2PA), and structure differences were demonstrated. The maximum δ2PA value was ∼1220 GM at 800 nm for hydrophilic SQ3. Distinct biological staining efficiency and selective SQ bioimaging were evaluated utilizing the onion epidermal cell model. Contrary to the hydrophobic SQ1 results in the onion epidermal cell wall, amphiphilic SQ2 tagged the vacuole and nucleus and SQ3 tagged the vacuole. Distinguishable staining profiles in the roots and leaves were achieved. We believe that this study is the first to demonstrate distinct visualisation efficiency induced by the structure differences of two-photon excited SQs. Our results can help establish the versatile roles of novel near-infrared-emitting SQs in biological applications.
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Affiliation(s)
- Nan Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Haixia Chang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Rong Miao
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
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3
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Shaffer CC, Zhai C, Chasteen JL, Orlova T, Zhukovskyi M, Smith BD. Silica nanoparticle remodeling under mild conditions: versatile one step conversion of mesoporous to hollow nanoparticles with simultaneous payload loading. NANOSCALE 2022; 14:17514-17518. [PMID: 36408868 PMCID: PMC9970696 DOI: 10.1039/d2nr05528g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A binary mixture of mesoporous silica nanoparticles plus organic polyammonium additive (dye or drug) is cleanly converted upon mild heating into hollow nanoparticles. The remodeled nanoparticle shell is an organized nanoscale assembly of globular additive/silica subunits and cancer cell assays show that a loaded drug additive is bioavailable.
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Affiliation(s)
- Cassandra C Shaffer
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Canjia Zhai
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Jordan L Chasteen
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Tatyana Orlova
- Notre Dame Integrated Imaging Facility, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Maksym Zhukovskyi
- Notre Dame Integrated Imaging Facility, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Bradley D Smith
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
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4
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Poudel DP, Taylor RT. Low-generation fluorescent polyurethane dendrimers via late-stage modification using azide-alkyne click chemistry. RSC Adv 2022; 12:28043-28051. [PMID: 36320285 PMCID: PMC9527571 DOI: 10.1039/d2ra04937f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022] Open
Abstract
Protecting group free one-pot multicomponent Curtius reaction afforded a versatile MN2 type dendron, ensuring late-stage modification of both dendron and dendrimer to afford highly fluorescent symmetrical and unsymmetrical (Janus) polyurethane dendrimers. Fluorescence study of these dendrimers exhibited the Förster resonance energy transfer (FRET) between blue and mint green fluorophores.
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Affiliation(s)
- Dhruba P. Poudel
- Department of Chemistry and Biochemistry, Miami UniversityOxfordOH45056USA
| | - Richard T. Taylor
- Department of Chemistry and Biochemistry, Miami UniversityOxfordOH45056USA
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5
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Abstract
During recent decades, the blossoming of the field of mechanically interlocked molecules (MIMs), i.e., molecules containing mechanical or topological bonds such as rotaxanes, catenanes, and knots, has been reported in the literature. Taking advantage of the rapid development of diverse synthetic strategies, the precise control of both the architectures and topologies of MIMs has become realizable, which thus enables the construction of MIMs with specially desired functions. By mimicking biomolecular machines, a variety of MIM-based artificial molecular machines such as molecular shuttles, molecular muscles, molecular motors, and molecular assemblers have been constructed and operated by relying on the unique interlocked structures and controllable intramolecular movements. Two pioneers in this field, J. Fraser Stoddart and Jean-Pierre Sauvage, were awarded the 2016 Nobel Prize in Chemistry, thereby marking a golden age of MIMs. Along with the burgeoning of MIMs, the engineering of mechanical bonds into macromolecular scaffolds such as polymers or dendrimers has become an attractive topic since the targeted novel mechanically bonded macromolecules would feature interesting processable and mechanical properties, making them excellent candidates for practical applications such as device fabrication or smart materials. In particular, rotaxane dendrimers, attributed to the combination of the advantageous features of both rotaxanes (controllable dynamic motions) and dendrimers (nanoscale highly branched architectures), have evolved as versatile platforms for extensive applications such as gene delivery, light harvesting, and molecular nanoreactors. However, compared with the widely investigated polyrotaxanes and polycatenanes, in-depth investigations on rotaxane dendrimers have rarely been explored mainly because of the synthetic challenge that makes the preparation of diverse rotaxane dendrimers, especially high-generation ones, extremely difficult. During recent years, through the rational design and synthesis of organometallic rotaxane units as key building blocks, the employment of a controllable divergent approach led to the successful synthesis of a variety of rotaxane dendrimers with precise arrangements of rotaxane units as well as stimuli-responsive sites and functional groups. More importantly, on the basis of the synthetic accessibility to diverse rotaxane dendrimers, rotaxane dendrimers have been proven to hold great promise for extensive applications in diverse fields such as light harvesting, photocatalysis, and soft actuators. In this Account, we summarize our expedition in rotaxane dendrimers, including addressing the synthetic challenges, investigating their stimuli-responsive properties, expanding their potential applications, and inventing higher-order daisy chain dendrimers. We believe that this Account will inspire scientists from various disciplines to explore these appealing and versatile higher-order mechanically bonded macromolecules.
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Affiliation(s)
- Xu-Qing Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People’s Republic of China
| | - Wei-Jian Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People’s Republic of China
| | - Wei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People’s Republic of China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People’s Republic of China
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6
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Adablah JE, Wang Y, Donohue M, Roper MG. Profiling Glucose-Stimulated and M3 Receptor-Activated Insulin Secretion Dynamics from Islets of Langerhans Using an Extended-Lifetime Fluorescence Dye. Anal Chem 2020; 92:8464-8471. [PMID: 32429660 PMCID: PMC7304439 DOI: 10.1021/acs.analchem.0c01226] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
![]()
Pulsatile insulin
from pancreatic islets is crucial for glucose
homeostasis, but the mechanism behind coordinated pulsatility is still
under investigation. One hypothesis suggests that cholinergic stimulation
of islets by pancreatic ganglia resets these endocrine units, producing
synchronization. Previously, it was shown that intracellular Ca2+ oscillations within islets can be entrained by pulses of
a cholinergic agonist, carbachol (CCh). Although these proxy measurements
of Ca2+ provided insight into the synchronization mechanism,
measurement of insulin output would be more direct evidence. To this
end, a fluorescence anisotropy competitive immunoassay for online
insulin detection from single and grouped islets in a microfluidic
system was developed using a piezoelectric pressure-driven fluid delivery
system and a squaraine rotaxane fluorophore, SeTau-647, as the fluorescent
label for insulin. Due to SeTau-647 having a longer lifetime and higher
brightness compared to the previously used Cy5 fluorophore, a 45%
increase in the anisotropy range was observed with enhanced signal-to-noise
ratio (S/N) of the measurements. This new system was tested by measuring
glucose-stimulated insulin secretion from single and groups of murine
and human islets. Distinct islet entrainment of groups of murine islets
by pulses of CCh was also observed, providing further evidence for
the hypothesis that pulsatile output from the ganglia can synchronize
islet behavior. We expect that this relatively straightforward, homogeneous
assay can be widely used for examining not only insulin secretion
but other secreted factors from different tissues.
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Affiliation(s)
- Joel E Adablah
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Yao Wang
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Matthew Donohue
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
| | - Michael G Roper
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, Florida 32306, United States
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7
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Jennah O, Beniazza R, Lozach C, Jardel D, Molton F, Duboc C, Buffeteau T, El Kadib A, Lastécouères D, Lahcini M, Vincent JM. Photoredox Catalysis at Copper(II) on Chitosan: Application to Photolatent CuAAC. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800964] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Oumayma Jennah
- Faculty of Sciences and Technologies; Cadi Ayyad University; Av. A. Elkhattabi, B.P. 549 40000 Marrakech Morocco
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
| | - Redouane Beniazza
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
- Mohammed VI Polytechnic University, UM6P; 43150 Ben Guerir Morocco
| | - Cédric Lozach
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
| | - Damien Jardel
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
| | - Florian Molton
- Univ. Grenoble Alpes, DCM UMR-CNRS 5250, F-; 38000 Grenoble France
| | - Carole Duboc
- Univ. Grenoble Alpes, DCM UMR-CNRS 5250, F-; 38000 Grenoble France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
| | - Abdelkrim El Kadib
- Euro-Med Research Center, Engineering Division; Euro-Med University of Fes (UEMF).; Route de Meknès. Rond-Point de Bensouda. 30070 Fès Morocco
| | | | - Mohammed Lahcini
- Faculty of Sciences and Technologies; Cadi Ayyad University; Av. A. Elkhattabi, B.P. 549 40000 Marrakech Morocco
- Mohammed VI Polytechnic University, UM6P; 43150 Ben Guerir Morocco
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires, CNRS UMR 5255; Univ. Bordeaux; 33405 Talence France
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8
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Li Y, Chen R, Zhou H, Shi Y, Qin C, Gao Y, Zhang G, Gao Y, Xiao L, Jia S. Observation of Singlet Oxygen with Single-Molecule Photosensitization by Time-Dependent Photon Statistics. J Phys Chem Lett 2018; 9:5207-5212. [PMID: 30122039 DOI: 10.1021/acs.jpclett.8b02088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The singlet oxygen has been widely applied to the treatment of physiological diseases, and the photosensitized generation of singlet oxygen is the main means of its physiological applications. On the basis of the fluctuation of fluorescence field from single photosensitizer, we characterize the generation of singlet oxygen at single molecule level with the time-dependent photon statistical method. By measuring the time-tagged-time-resolved single-molecule fluorescence photons, we analyze the time-dependent Mandel-Q parameter, which has been performed at different oxygen environment. It is shown that the single molecule not only offers an efficient way of generating singlet oxygen in ambient condition but also provides insights for the fluctuation of singlet oxygen in the nanoscale environment. The method of time-dependent photon statistics provides a convenient methodology for observing photosensitizers generating singlet oxygen in real time at single photosensitizer level.
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Affiliation(s)
- Yao Li
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Ruiyun Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Haitao Zhou
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Ying Shi
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Chengbing Qin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Yajun Gao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Guofeng Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Yan Gao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Liantuan Xiao
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy , Shanxi University , Taiyuan 030006 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan , Shanxi 030006 , China
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9
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Wang YX, Zhou QF, Chen LJ, Xu L, Wang CH, Li X, Yang HB. Facile construction of organometallic rotaxane-terminated dendrimers using neutral platinum-acetylides as the main scaffold. Chem Commun (Camb) 2018; 54:2224-2227. [PMID: 29323676 DOI: 10.1039/c7cc08729b] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the successful construction of a new family of organometallic rotaxane-terminated dendrimers using neutral platinum-acetylides as the main scaffold. The fourth generation dendrimer has 24 rotaxane moieties on the surface termini in a monodisperse manner.
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Affiliation(s)
- Yu-Xuan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road Shanghai, 200062, China.
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10
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Ziarani GM, Moradi R, Lashgari N, Kruger HG. Squaraine Dyes. METAL-FREE SYNTHETIC ORGANIC DYES 2018:193-196. [DOI: 10.1016/b978-0-12-815647-6.00015-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
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11
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de Moliner F, Kielland N, Lavilla R, Vendrell M. Modern Synthetic Avenues for the Preparation of Functional Fluorophores. Angew Chem Int Ed Engl 2017; 56:3758-3769. [PMID: 27907246 PMCID: PMC5396271 DOI: 10.1002/anie.201609394] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Indexed: 12/19/2022]
Abstract
Biomedical research relies on the fast and accurate profiling of specific biomolecules and cells in a non‐invasive manner. Functional fluorophores are powerful tools for such studies. As these sophisticated structures are often difficult to access through conventional synthetic strategies, new chemical processes have been developed in the past few years. In this Minireview, we describe the most recent advances in the design, preparation, and fine‐tuning of fluorophores by means of multicomponent reactions, C−H activation processes, cycloadditions, and biomolecule‐based chemical transformations.
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Affiliation(s)
- Fabio de Moliner
- MRC/UoE Centre for Inflammation Research, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Nicola Kielland
- Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Barcelona Science Park, Baldiri Reixac 10-12, Barcelona, 08028, Spain
| | - Rodolfo Lavilla
- Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Barcelona Science Park, Baldiri Reixac 10-12, Barcelona, 08028, Spain.,CIBER-BBN, Networking Centre for Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10-12, Barcelona, 08028, Spain
| | - Marc Vendrell
- MRC/UoE Centre for Inflammation Research, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
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12
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de Moliner F, Kielland N, Lavilla R, Vendrell M. Moderne Strategien zur Synthese funktioneller Fluorophore. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609394] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fabio de Moliner
- MRC/UoE Centre for Inflammation Research; The University of Edinburgh; 47 Little France Crescent Edinburgh EH16 4TJ Großbritannien
| | - Nicola Kielland
- Laboratory of Organic Chemistry, Faculty of Pharmacy; University of Barcelona; Barcelona Science Park, Baldiri Reixac 10-12 Barcelona 08028 Spanien
| | - Rodolfo Lavilla
- Laboratory of Organic Chemistry, Faculty of Pharmacy; University of Barcelona; Barcelona Science Park, Baldiri Reixac 10-12 Barcelona 08028 Spanien
- CIBER-BBN, Networking Centre for Bioengineering, Biomaterials and Nanomedicine; Baldiri Reixac 10-12 Barcelona 08028 Spanien
| | - Marc Vendrell
- MRC/UoE Centre for Inflammation Research; The University of Edinburgh; 47 Little France Crescent Edinburgh EH16 4TJ Großbritannien
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13
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Pairault N, Barat R, Tranoy-Opalinski I, Renoux B, Thomas M, Papot S. Rotaxane-based architectures for biological applications. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Arseneault M, Wafer C, Morin JF. Recent advances in click chemistry applied to dendrimer synthesis. Molecules 2015; 20:9263-94. [PMID: 26007183 PMCID: PMC6272213 DOI: 10.3390/molecules20059263] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 05/12/2015] [Indexed: 11/16/2022] Open
Abstract
Dendrimers are monodisperse polymers grown in a fractal manner from a central point. They are poised to become the cornerstone of nanoscale devices in several fields, ranging from biomedicine to light-harvesting. Technical difficulties in obtaining these molecules has slowed their transfer from academia to industry. In 2001, the arrival of the "click chemistry" concept gave the field a major boost. The flagship reaction, a modified Hüisgen cycloaddition, allowed researchers greater freedom in designing and building dendrimers. In the last five years, advances in click chemistry saw a wider use of other click reactions and a notable increase in the complexity of the reported structures. This review covers key developments in the click chemistry field applied to dendrimer synthesis from 2010 to 2015. Even though this is an expert review, basic notions and references have been included to help newcomers to the field.
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Affiliation(s)
- Mathieu Arseneault
- Chimie, Université Laval, 1045 avenue de la Médecine, Pavillon Alexandre-Vachon, QC G1V 0A6, Canada.
| | - Caroline Wafer
- Chimie, Université Laval, 1045 avenue de la Médecine, Pavillon Alexandre-Vachon, QC G1V 0A6, Canada.
| | - Jean-François Morin
- Chimie, Université Laval, 1045 avenue de la Médecine, Pavillon Alexandre-Vachon, QC G1V 0A6, Canada.
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15
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Veerapandian S, Nasar AS. Amine- and blocked isocyanate-terminated polyurethane dendrimers: integrated synthesis, photophysical properties and application in a heat curable system. RSC Adv 2015. [DOI: 10.1039/c4ra12751j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of two different functional polyurethane dendrimers in a three step divergent method and their application is described.
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Affiliation(s)
- S. Veerapandian
- Department of polymer Science
- University of Madras
- Chennai 600 025
- India
| | - A. Sultan Nasar
- Department of polymer Science
- University of Madras
- Chennai 600 025
- India
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16
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Liu G, Li Z, Wu D, Xue W, Li T, Liu SH, Yin J. Dendritic [2]Rotaxanes: Synthesis, Characterization, and Properties. J Org Chem 2014; 79:643-52. [DOI: 10.1021/jo402428y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Guoxing Liu
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Ziyong Li
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Di Wu
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Wen Xue
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Tingting Li
- Institute
of Hydrobiology, Chinese Academy of Sciences, Wuhan 430079, P.R. China
| | - Sheng Hua Liu
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
| | - Jun Yin
- Key
Laboratory of Pesticide and Chemical Biology, Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P.R. China
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17
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Ptaszek M. Rational design of fluorophores for in vivo applications. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 113:59-108. [PMID: 23244789 DOI: 10.1016/b978-0-12-386932-6.00003-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Several classes of small organic molecules exhibit properties that make them suitable for fluorescence in vivo imaging. The most promising candidates are cyanines, squaraines, boron dipyrromethenes, porphyrin derivatives, hydroporphyrins, and phthalocyanines. The recent designing and synthetic efforts have been dedicated to improving their optical properties (shift the absorption and emission maxima toward longer wavelengths and increase the brightness) as well as increasing their stability and water solubility. The most notable advances include development of encapsulated cyanine dyes with increased stability and water solubility, squaraine rotaxanes with increased stability, long-wavelength-absorbing boron dipyrromethenes, long-wavelength-absorbing porphyrin and hydroporphyrin derivatives, and water-soluble phthalocyanines. Recent advances in luminescence and bioluminescence have made self-illuminating fluorophores available for in vivo applications. Development of new types of hydroporphyrin energy-transfer dyads gives the promise for further advances in in vivo multicolor imaging.
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Affiliation(s)
- Marcin Ptaszek
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, Maryland, USA
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18
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Nielsen MC, Larsen AF, Abdikadir FH, Ulven T. Phenanthroline-2,9-bistriazoles as selective G-quadruplex ligands. Eur J Med Chem 2013; 72:119-26. [PMID: 24361524 DOI: 10.1016/j.ejmech.2013.11.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 11/17/2013] [Accepted: 11/25/2013] [Indexed: 02/09/2023]
Abstract
G-quadruplex (G4) ligands are currently receiving considerable attention as potential anticancer therapeutics. A series of phenanthroline-2,9-bistriazoles carrying tethered positive end groups has been synthesized and evaluated as G4 stabilizers. The compounds were efficiently assembled by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) in CH2Cl2 and water in the presence of a complexing agent. Characterization of the target compounds on telomeric and c-KIT G4 sequences led to the identification of guanidinium-substituted compounds as potent G4 DNA ligands with high selectivity over duplex DNA. The diisopropylguanidium ligands exhibited high selectivity for the proto-oncogenic sequence c-KIT over the human telomeric sequence in the surface plasmon resonance (SPR) assay, whereas the compounds appeared potent on both G4 structures in the FRET melting temperature assay. The phenanthroline-2,9-bistriazole ligands were thus identified as potent G4 ligands with high selectivity over duplex DNA, and preliminary results indicate that the scaffold may form basis for the development of subtype-specific G4 ligands.
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Affiliation(s)
- Mads Corvinius Nielsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Anders Foller Larsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Faisal Hussein Abdikadir
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Trond Ulven
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
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19
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Harmatys KM, Cole EL, Smith BD. In vivo imaging of bone using a deep-red fluorescent molecular probe bearing multiple iminodiacetate groups. Mol Pharm 2013; 10:4263-71. [PMID: 24099089 DOI: 10.1021/mp400357v] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Deep-red fluorescent molecular probes are described that have a dendritic molecular architecture with a squaraine rotaxane core scaffold and multiple peripheral iminodiacetate groups as the bone targeting units. Iminodiacetates have an inherently lower bone affinity than bisphosphonates, and a major goal of the study was to determine how many appended iminodiacetate groups are required for effective deep-red fluorescence imaging of bone in living rodents. A series of in vitro and in vivo imaging studies showed that a tetra(iminodiacetate) probe stains bones much more strongly than an analogous bis(iminodiacetate) probe. In addition, a control tetra(iminodipropionate) probe exhibited no bone targeting ability. The tetra(iminodiacetate) probe targeted the same regions of high bone turnover as the near-infrared bisphosphonate probe OsteoSense750. Longitudinal studies showed that the fluorescence image signal from living mice treated with the tetra(iminodiacetate) probe was much more stable over 19 days than the signal from OsteoSense750. The narrow emission band of the tetra(iminodiacetate) probe makes it very attractive for inclusion in multiplex imaging protocols that employ a mixture of multiple fluorescent probes in preclinical studies of bone growth or in fluorescence guided surgery. The results also suggest that molecules or nanoparticles bearing multivalent iminodiacetate groups have promise as bone targeting agents with tunable properties for various pharmaceutical applications.
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Affiliation(s)
- Kara M Harmatys
- Department of Chemistry and Biochemistry, University of Notre Dame , 236 Nieuwland Science Hall, Notre Dame, 46556 Indiana, United States
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20
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Smith BA, Harmatys KM, Xiao S, Cole EL, Plaunt AJ, Wolter W, Suckow MA, Smith BD. Enhanced cell death imaging using multivalent zinc(II)-bis(dipicolylamine) fluorescent probes. Mol Pharm 2013; 10:3296-303. [PMID: 23915311 DOI: 10.1021/mp300720k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
There is a clinical need for imaging technologies that can accurately detect cell death in a multitude of pathological conditions. Zinc(II)-bis(dipicolylamine) (Zn2BDPA) coordination complexes are known to associate with the anionic phosphatidylserine that is exposed on the surface of dead and dying cells, and fluorescent monovalent Zn2BDPA probes are successful cell death imaging agents. This present study compared the membrane targeting ability of two structurally related deep-red fluorescent probes, bis-Zn2BDPA-SR and tetra-Zn2BDPA-SR, with two and four appended Zn2BDPA units, respectively. Vesicle and cell microscopy studies indicated that a higher number of Zn2BDPA targeting units improved probe selectivity for phosphatidylserine-rich vesicles, and increased probe localization at the plasma membrane of dead and dying cells. The fluorescent probes were also tested in three separate animal models, (1) necrotic prostate tumor rat model, (2) thymus atrophy mouse model, and (3) traumatic brain injury mouse model. In each case, there was more tetra-Zn2BDPA-SR accumulation at the site of cell death than bis-Zn2BDPA-SR. The results indicate that multivalent Zn2BDPA probes are promising molecules for effective imaging of cell death processes in cell culture and in living subjects.
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Affiliation(s)
- Bryan A Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame , Notre Dame, Indiana 46556, United States
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21
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Maeda Y, Iwata R, Wada T. Synthesis and properties of cationic oligopeptides with different side chain lengths that bind to RNA duplexes. Bioorg Med Chem 2013; 21:1717-23. [DOI: 10.1016/j.bmc.2013.01.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 01/22/2013] [Accepted: 01/23/2013] [Indexed: 10/27/2022]
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22
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Xiao S, Turkyilmaz S, Smith BD. Convenient Synthesis of Multivalent Zinc(II)-Dipicolylamine Complexes for Molecular Recognition. Tetrahedron Lett 2013; 54:861-864. [PMID: 23459472 PMCID: PMC3580864 DOI: 10.1016/j.tetlet.2012.11.103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A pair of novel dipicolylamine ligands bearing isothiocyanate groups were used as conjugation reagents to prepare multivalent molecules with anionic recognition capability. The isothiocyanates were reacted with two classes of dendritic scaffolds bearing primary amines, squaraine rotaxanes and PAMAM dendrimers, and the products were converted into water soluble zinc(II) coordination complexes. The multivalent squaraine rotaxanes exhibit high fluorescence quantum yields in water and are very well suited for biological imaging applications.
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Affiliation(s)
- Shuzhang Xiao
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Serhan Turkyilmaz
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
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23
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Zhang Y, Shen K, Guo F, Wang Y, Wang Y, Wang Y, Li Y. Incorporation of chromophores into dendrigraft polybutadiene: effect of dendrigraft matrix on the fluorescent properties. RSC Adv 2013. [DOI: 10.1039/c3ra43791d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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24
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Huisgen click cycloadditions from a copper(II)-tren precatalyst without external sacrificial reductant. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Ahmed R, Altieri A, D’Souza DM, Leigh DA, Mullen KM, Papmeyer M, Slawin AMZ, Wong JKY, Woollins JD. Phosphorus-Based Functional Groups as Hydrogen Bonding Templates for Rotaxane Formation. J Am Chem Soc 2011; 133:12304-10. [DOI: 10.1021/ja2049786] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rehan Ahmed
- School of Chemistry, EaStCHEM, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Andrea Altieri
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Daniel M. D’Souza
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - David A. Leigh
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Kathleen M. Mullen
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Marcus Papmeyer
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Alexandra M. Z. Slawin
- School of Chemistry, EaStCHEM, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Jenny K. Y. Wong
- School of Chemistry, EaStCHEM, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - J. Derek Woollins
- School of Chemistry, EaStCHEM, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
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26
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Rijs AM, Kay ER, Leigh DA, Buma WJ. IR Spectroscopy on Jet-Cooled Isolated Two-Station Rotaxanes. J Phys Chem A 2011; 115:9669-75. [DOI: 10.1021/jp200909v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anouk M. Rijs
- FOM Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, 3439 MN Nieuwegein, The Netherlands
| | - Euan R. Kay
- School of Chemistry, University of Edinburgh, The King’s Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - David A. Leigh
- School of Chemistry, University of Edinburgh, The King’s Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Wybren Jan Buma
- University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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27
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Lee JJ, Gonçalves A, Smith BA, Palumbo R, White AG, Smith BD. Singlet Oxygen Release and Cell Toxicity of a Chemiluminescent Squaraine Rotaxane Dye: Implications for Molecular Imaging. Aust J Chem 2011. [DOI: 10.1071/ch11038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The water soluble tetraguanidinium squaraine rotaxane 2 was prepared and photoconverted to its corresponding squaraine rotaxane endoperoxide (SREP), 2EP. As expected, 2EP undergoes a thermal cycloreversion reaction that releases 60 ± 4% singlet oxygen and produces near-infrared emission in aqueous solution. Cell toxicity assays in the dark, using human and bacterial cell cultures, showed that 2EP (up to 20 µM) is no more toxic than its parent 2. This suggests that SREP-derived imaging probes are not likely to exhibit a significant toxicity effect due to the slow release of stoichiometric amounts of singlet oxygen. Additional photosensitization experiments showed that tetraguanidinium squaraine rotaxane 2 is a weak photosensitizer, but nonetheless, red light irradiation of cell cultures that were pre-incubated with 2 (>3 µM) produced moderate phototoxicity. Fluorescence microscopy studies attribute the phototoxicity of 2 to its ability to penetrate into the cell cytosol. The implications of these results are discussed in the context of effective methods to activate SREP as chemiluminescent probes for in vivo optical molecular imaging.
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28
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Altieri A, Aucagne V, Carrillo R, Clarkson GJ, D'Souza DM, Dunnett JA, Leigh DA, Mullen KM. Sulfur-containing amide-based [2]rotaxanes and molecular shuttles. Chem Sci 2011. [DOI: 10.1039/c1sc00335f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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29
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White AG, Fu N, Leevy WM, Lee JJ, Blasco MA, Smith BD. Optical imaging of bacterial infection in living mice using deep-red fluorescent squaraine rotaxane probes. Bioconjug Chem 2010; 21:1297-304. [PMID: 20536173 DOI: 10.1021/bc1000998] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two structurally related fluorescent imaging probes allow optical imaging of bacterial leg infection models in living athymic and immunocompetent mice. Structurally, the probes are comprised of a deep-red fluorescent squaraine rotaxane scaffold with two appended bis(zinc(II)-dicolylamine) (bis(Zn-DPA)) targeting ligands. The bis(Zn-DPA) ligands have high affinity for the anionic phospholipids and related biomolecules that reside within the bacterial envelope, and they are known to selectively target bacterial cells over the nearly uncharged membrane surfaces of healthy mammalian cells. Planar, whole-animal optical imaging studies showed that intravenous dosing of either probe (10 nmol) allowed imaging of localized infections of Gram-positive Staphylococcus aureus and Gram-negative Salmonella enterica serovar typhimurium. High selectivity for the infected target leg (T) over the contralateral nontarget leg (NT) was reflected by T/NT ratios up to six. The infection imaging signal was independent of mouse humoral immune status, and there was essentially no targeting at a site of sterile inflammation induced by injection of lambda-carrageenan. Furthermore, the fluorescent probe imaging signal colocalized with the bioluminescence signal from a genetically engineered strain of S. enterica serovar typhimurium. Although not highly sensitive (the localized infection must contain at least approximately 10(6) colony forming units for fluorescence visualization), the probes are remarkably selective for bacterial cells considering their low molecular weight (<1.5 kDa) and simple structural design. The more hydrophilic of the two probes produced a higher T/NT ratio in the early stages of the imaging experiment and washed out more rapidly from the blood clearance organs (liver, kidney). Therefore, it is best suited for longitudinal studies that require repeated dosing and imaging of the same animal. The results indicate that fluorescent probes based on squaraine rotaxanes should be broadly useful for in vivo animal imaging studies, and they further validate the ability of imaging probes with bis(Zn-DPA) ligands to selectively target bacterial infections in living animals.
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Affiliation(s)
- Alexander G White
- Department of Chemistry and Biochemistry and the Notre Dame Integrated Imaging Facility, University of Notre Dame, Notre Dame, Indiana 46556, USA
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30
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Storable, thermally activated, near-infrared chemiluminescent dyes and dye-stained microparticles for optical imaging. Nat Chem 2010; 2:1025-30. [PMID: 21107365 DOI: 10.1038/nchem.871] [Citation(s) in RCA: 205] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Accepted: 09/06/2010] [Indexed: 01/30/2023]
Abstract
Imaging techniques are a vital part of clinical diagnostics, biomedical research and nanotechnology. Optical molecular imaging makes use of relatively harmless, low-energy light and technically straightforward instrumentation. Self-illuminating, chemiluminescent systems are particularly attractive because they have inherently high signal contrast due to the lack of background emission. Currently, chemiluminescence imaging involves short-lived molecular species that are not stored but are instead generated in situ, and they typically emit visible light, which does not penetrate far through heterogeneous biological media. Here, we describe a new paradigm for optical molecular imaging using squaraine rotaxane endoperoxides, interlocked fluorescent and chemiluminescent dye molecules that have a squaraine chromophore encapsulated inside a macrocycle endoperoxide. Squaraine rotaxane endoperoxides can be stored indefinitely at temperatures below -20 °C, but upon warming to body temperature they undergo a unimolecular chemical reaction and emit near-infrared light that can pass through a living mouse.
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31
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D’Souza DM, Leigh DA, Mottier L, Mullen KM, Paolucci F, Teat SJ, Zhang S. Nitrone [2]Rotaxanes: Simultaneous Chemical Protection and Electrochemical Activation of a Functional Group. J Am Chem Soc 2010; 132:9465-70. [DOI: 10.1021/ja1034683] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel M. D’Souza
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - David A. Leigh
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - Loïc Mottier
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - Kathleen M. Mullen
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - Francesco Paolucci
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - Simon J. Teat
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
| | - Songwei Zhang
- School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh EH9 3JJ, United Kingdom, Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy, and CCLRC Daresbury Laboratory, Warrington, United Kingdom
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32
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Kröger M, Peleg O, Halperin A. From Dendrimers to Dendronized Polymers and Forests: Scaling Theory and its Limitations. Macromolecules 2010. [DOI: 10.1021/ma100861b] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Kröger
- Polymer Physics, ETH Zürich, Department of Materials, CH-8093 Zürich, Switzerland
| | - Orit Peleg
- Polymer Physics, ETH Zürich, Department of Materials, CH-8093 Zürich, Switzerland
| | - Avraham Halperin
- Laboratoire de Spectrométrie Physique (LSP) CNRS UniVersité Joseph Fourier, BP 87, 38402 Saint Martin d’Hères cedex, France
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33
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Xue M, Su YS, Chen CF. Isomeric Squaraine-Based [2]Pseudorotaxanes and [2]Rotaxanes: Synthesis, Optical Properties, and Their Tubular Structures in the Solid State. Chemistry 2010; 16:8537-44. [DOI: 10.1002/chem.201000773] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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