1
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The in vivo fate of polymeric micelles. Adv Drug Deliv Rev 2022; 188:114463. [PMID: 35905947 DOI: 10.1016/j.addr.2022.114463] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/10/2022] [Accepted: 07/15/2022] [Indexed: 12/12/2022]
Abstract
This review aims to provide a systemic analysis of the in vivo, as well as subcellular, fate of polymeric micelles (PMs), starting from the entry of PMs into the body. Few PMs are able to cross the biological barriers intact and reach the circulation. In the blood, PMs demonstrate fairly good stability mainly owing to formation of protein corona despite controversial results reported by different groups. Although the exterior hydrophilic shells render PMs "long-circulating", the biodistribution of PMs into the mononuclear phagocyte systems (MPS) is dominant as compared with non-MPS organs and tissues. Evidence emerges to support that the copolymer poly(ethylene glycol)-poly(lactic acid) (PEG-PLA) is first broken down into pieces of PEG and PLA and then remnants to be eliminated from the body finally. At the cellular level, PMs tend to be internalized via endocytosis due to their particulate nature and disassembled and degraded within the cell. Recent findings on the effect of particle size, surface characteristics and shape are also reviewed. It is envisaged that unraveling the in vivo and subcellular fate sheds light on the performing mechanisms and gears up the clinical translation of PMs.
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Conte C, Monteiro PF, Gurnani P, Stolnik S, Ungaro F, Quaglia F, Clarke P, Grabowska A, Kavallaris M, Alexander C. Multi-component bioresponsive nanoparticles for synchronous delivery of docetaxel and TUBB3 siRNA to lung cancer cells. NANOSCALE 2021; 13:11414-11426. [PMID: 34160534 DOI: 10.1039/d1nr02179f] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bioresponsive nanoparticles (NPs) are of interest for anticancer nanomedicines, owing to the possibility to 'design in' selective modulation of drug release at target sites. Here we describe the double emulsion formulation of redox-responsive NPs based on modified polyethylene glycol (PEG)-co-poly(lactic-co-glycolic acid) (PLGA) block copolymers and oligo (β-aminoesters) (OBAE), both of which contained disulfide linkages, for the co-delivery of a cytotoxic small molecule drug and a nucleic acid. In particular, we focused our attention on docetaxel (DTX) and a siRNA against TUBB3, a gene that encodes for βIII-tubulin, in order to have a synergistic effect in the treatment of lung cancer. Spherical NPs of around 150 nm with negative zeta potential and high loading efficiencies of both drugs were obtained. Stability and release studies showed "on demand" drug release under reducing conditions. Unloaded NPs containing PEG-disulfide-PLGA and OBAE were well-tolerated by lung cancer cells, thus masking the intrinsic cytotoxicity of OBAE, while for intracellular siRNA delivery, redox responsive NPs demonstrated a higher cell internalization with a preferential cytoplasmic accumulation of siRNA, with a subsequent fast gene-silencing efficiency. The viability of cells treated with combined DTX/TUBB3-siRNA NPs significantly decreased as compared to NPs loaded only with DTX, thus showing an efficient combined anticancer effect, due to a substantial reduction of β-tubulin expression. Finally, in an in vivo feasibility study employing an orthotopic lung cancer model, NPs formulated with an anti-luciferase siRNA distributed throughout the lungs following oro-tracheal administration, and demonstrated effective gene knockdown and no apparent cytotoxicity. Taken together, these results show that the double emulsion formulated redox responsive PEG-PLGA and OBAE systems represent a promising new therapeutic approach for the local combined chemo- and gene-therapy of lung cancer.
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Affiliation(s)
- Claudia Conte
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, NG7 2RD, UK. and Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, 80131 Napoli, Italy
| | - Patrícia F Monteiro
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, NG7 2RD, UK.
| | - Pratik Gurnani
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, NG7 2RD, UK.
| | - Snow Stolnik
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, NG7 2RD, UK.
| | - Francesca Ungaro
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, 80131 Napoli, Italy
| | - Fabiana Quaglia
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, 80131 Napoli, Italy
| | - Philip Clarke
- The BioDiscovery Institute and Faculty of Medicine & Health Sciences, University of Nottingham, NG7 2RD, UK
| | - Anna Grabowska
- The BioDiscovery Institute and Faculty of Medicine & Health Sciences, University of Nottingham, NG7 2RD, UK
| | - Maria Kavallaris
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, NSW 2052, Australia and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and Australian Centre for NanoMedicine, UNSW Sydney, NSW 2052, Australia and School of Women's and Children's Health, Faculty of Medicine, UNSW Sydney, NSW, Australia 2052
| | - Cameron Alexander
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, NG7 2RD, UK.
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Mazumdar S, Chitkara D, Mittal A. Exploration and insights into the cellular internalization and intracellular fate of amphiphilic polymeric nanocarriers. Acta Pharm Sin B 2021; 11:903-924. [PMID: 33996406 PMCID: PMC8105776 DOI: 10.1016/j.apsb.2021.02.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/20/2020] [Accepted: 01/18/2021] [Indexed: 01/01/2023] Open
Abstract
The beneficial or deleterious effects of nanomedicines emerge from their complex interactions with intracellular pathways and their subcellular fate. Moreover, the dynamic nature of plasma membrane accounts for the movement of these nanocarriers within the cell towards different organelles thereby not only influencing their pharmacokinetic and pharmacodynamic properties but also bioavailability, therapeutic efficacy and toxicity. Therefore, an in-depth understanding of underlying parameters controlling nanocarrier endocytosis and intracellular fate is essential. In order to direct nanoparticles towards specific sub-cellular organelles the physicochemical attributes of nanocarriers can be manipulated. These include particle size, shape and surface charge/chemistry. Restricting the particle size of nanocarriers below 200 nm contributes to internalization via clathrin and caveolae mediated pathways. Similarly, a moderate negative surface potential confers endolysosomal escape and targeting towards mitochondria, endoplasmic reticulum (ER) and Golgi. This review aims to provide an insight into these physicochemical attributes of nanocarriers fabricated using amphiphilic graft copolymers affecting cellular internalization. Fundamental principles understood from experimental studies have been extrapolated to draw a general conclusion for the designing of optimized nanoparticulate drug delivery systems and enhanced intracellular uptake via specific endocytic pathway.
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Key Words
- AR, aspect ratio
- Amphiphilic
- CCP, clathrin coated pits
- Cav-1, caveolin-1
- Copolymer
- Cy, cyanine
- DOX, doxorubicin
- ER, endoplasmic reticulum
- FITC, fluorescein isothiocyanate
- HER-2, human epidermal growth factor receptor 2
- IL-2, interleukin
- Internalization
- Intracellular fate
- Nanoparticles
- RBITC, rhodamine B isothiocyanate
- RES, reticuloendothelial system
- Rmax, minimum size threshold value
- Rmin, maximum size threshold value
- SEM, scanning electron microscopy
- SR & LR, short rod and long rod
- TEM, transmission electron microscopy
- mPEG, methoxy poly(ethylene glycol)
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Affiliation(s)
- Samrat Mazumdar
- Department of Pharmacy, Birla Institute of Technology and Science (BITS-PILANI), Pilani, Rajasthan 333031, India
| | - Deepak Chitkara
- Department of Pharmacy, Birla Institute of Technology and Science (BITS-PILANI), Pilani, Rajasthan 333031, India
| | - Anupama Mittal
- Department of Pharmacy, Birla Institute of Technology and Science (BITS-PILANI), Pilani, Rajasthan 333031, India
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Ghezzi M, Pescina S, Padula C, Santi P, Del Favero E, Cantù L, Nicoli S. Polymeric micelles in drug delivery: An insight of the techniques for their characterization and assessment in biorelevant conditions. J Control Release 2021; 332:312-336. [PMID: 33652113 DOI: 10.1016/j.jconrel.2021.02.031] [Citation(s) in RCA: 352] [Impact Index Per Article: 117.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/16/2022]
Abstract
Polymeric micelles, i.e. aggregation colloids formed in solution by self-assembling of amphiphilic polymers, represent an innovative tool to overcome several issues related to drug administration, from the low water-solubility to the poor drug permeability across biological barriers. With respect to other nanocarriers, polymeric micelles generally display smaller size, easier preparation and sterilization processes, and good solubilization properties, unfortunately associated with a lower stability in biological fluids and a more complicated characterization. Particularly challenging is the study of their interaction with the biological environment, essential to predict the real in vivo behavior after administration. In this review, after a general presentation on micelles features and properties, different characterization techniques are discussed, from the ones used for the determination of micelles basic characteristics (critical micellar concentration, size, surface charge, morphology) to the more complex approaches used to figure out micelles kinetic stability, drug release and behavior in the presence of biological substrates (fluids, cells and tissues). The techniques presented (such as dynamic light scattering, AFM, cryo-TEM, X-ray scattering, FRET, symmetrical flow field-flow fractionation (AF4) and density ultracentrifugation), each one with their own advantages and limitations, can be combined to achieve a deeper comprehension of polymeric micelles in vivo behavior. The set-up and validation of adequate methods for micelles description represent the essential starting point for their development and clinical success.
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Affiliation(s)
- M Ghezzi
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - S Pescina
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - C Padula
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - P Santi
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - E Del Favero
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - L Cantù
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - S Nicoli
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
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5
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Zhang G, Wang Y, Zhang Z, He Z, Liu Y, Fu Q. FRET imaging revealed that nanocrystals enhanced drug oral absorption by dissolution rather than endocytosis: A case study of coumarin 6. J Control Release 2021; 332:225-232. [PMID: 33640408 DOI: 10.1016/j.jconrel.2021.02.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/16/2021] [Accepted: 02/22/2021] [Indexed: 01/21/2023]
Abstract
Nanocrystals (NCs) exhibit potential in improving oral bioavailability for poorly water-soluble drugs. However, whether NCs improve oral absorption by quick dissolution or by endocytosis remains inconclusive because tracking of dissolved drugs and NCs particles cannot occur simultaneously. In this study, we aim to elucidate how NCs improve oral absorption by using coumarin 6 (C6), an aggregation-caused quenching fluorophore, and 2-((5-(4-(dip-tolylamino)phenyl)thiophen-2-yl)methylene)malononitrile (MeTTMN), an aggregation-induced emission fluorophore. C6 was used as a model drug to prepare NCs and MeTTMN was incorporated to construct fluorescence resonance energy transfer (FRET) pairs. Thus, the molecular absorption can be detected using the fluorescence signal of dissolved C6 and the NCs particles can be tracked simultaneously by monitoring FRET signals. The reliability of this tracking method was validated. Accordingly, in vitro dissolution, gastrointestinal traffic, and biodistribution studies were conducted. The results showed that dissolved C6 molecules were the main absorption mode of C6 NCs. Identification of such pathways bears considerable significance for the broad application of drug NCs in improving the druggability of insoluble drugs.
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Affiliation(s)
- Guangshuai Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Yunzhi Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Zuopeng Zhang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Zhonggui He
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Yang Liu
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
| | - Qiang Fu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
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6
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Qiang Z, Wang M. 100th Anniversary of Macromolecular Science Viewpoint: Enabling Advances in Fluorescence Microscopy Techniques. ACS Macro Lett 2020; 9:1342-1356. [PMID: 35638626 DOI: 10.1021/acsmacrolett.0c00506] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the past few decades there has been a revolution in the field of optical microscopy with emerging capabilities such as super-resolution and single-molecule fluorescence techniques. Combined with the classical advantages of fluorescence imaging, such as chemical labeling specificity, and noninvasive sample preparation and imaging, these methods have enabled significant advances in our polymer community. This Viewpoint discusses several of these capabilities and how they can uniquely offer information where other characterization techniques are limited. Several examples are highlighted that demonstrate the ability of fluorescence microscopy to understand key questions in polymer science such as single-molecule diffusion and orientation, 3D nanostructural morphology, and interfacial and multicomponent dynamics. Finally, we briefly discuss opportunities for further advances in techniques that may allow them to make an even greater contribution in polymer science.
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Affiliation(s)
- Zhe Qiang
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Muzhou Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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7
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Taemaitree F, Fortuni B, Koseki Y, Fron E, Rocha S, Hofkens J, Uji-I H, Inose T, Kasai H. FRET-based intracellular investigation of nanoprodrugs toward highly efficient anticancer drug delivery. NANOSCALE 2020; 12:16710-16715. [PMID: 32785392 DOI: 10.1039/d0nr04910g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In order to overcome unpredictable side-effects and increased cytotoxicity of conventional carrier-based anticancer drug delivery systems, several systems that consist exclusively of the pure drug (or prodrug) have been proposed. The behavior and dynamics of these systems after entering cancer cells are, however, still unknown, hindering their progress towards in vivo and clinical applications. Here, we report a comprehensive in cellulo study of carrier-free SN-38 nanoprodrugs (NPDs), previously developed by our group. The work shows the intracellular uptake, localization, and degradation of the NPDs via FRET microscopy. Accordingly, new FRET-NPDs were chemically synthesized and characterized. Prodrug to drug conversion and therapeutic efficiency were also validated. Our work provides crucial information for the application of NPDs as drug delivery systems and demonstrates their outstanding potential as next-generation anticancer nanomedicines.
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Affiliation(s)
- Farsai Taemaitree
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ward, Sendai 980-8577, Japan.
| | - Beatrice Fortuni
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F 3001, Heverlee, Belgium.
| | - Yoshitaka Koseki
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ward, Sendai 980-8577, Japan.
| | - Eduard Fron
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F 3001, Heverlee, Belgium.
| | - Susana Rocha
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F 3001, Heverlee, Belgium.
| | - Johan Hofkens
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F 3001, Heverlee, Belgium. and Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hiroshi Uji-I
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F 3001, Heverlee, Belgium. and Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita-Ward, Sapporo, 0010020, Japan
| | - Tomoko Inose
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita-Ward, Sapporo, 0010020, Japan
| | - Hitoshi Kasai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ward, Sendai 980-8577, Japan.
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8
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Fan W, Yu Z, Peng H, He H, Lu Y, Qi J, Dong X, Zhao W, Wu W. Effect of particle size on the pharmacokinetics and biodistribution of parenteral nanoemulsions. Int J Pharm 2020; 586:119551. [DOI: 10.1016/j.ijpharm.2020.119551] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/18/2020] [Accepted: 06/13/2020] [Indexed: 12/16/2022]
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9
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Lyu Y, Guo Y, Cai R, Peng R, Hong C, Chen X, Hou W, Li X, Tan J, Zou Y, Zhang X, Liu Q, Tan W. Spherically Directed Synthesis and Enhanced Cellular Internalization of Metal-Crosslinked DNA Micelles. Chem 2019. [DOI: 10.1016/j.chempr.2019.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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10
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Xiong S, Liu W, Li D, Chen X, Liu F, Yuan D, Pan H, Wang Q, Fang S, Chen T. Oral Delivery of Puerarin Nanocrystals To Improve Brain Accumulation and Anti-Parkinsonian Efficacy. Mol Pharm 2019; 16:1444-1455. [PMID: 30811206 DOI: 10.1021/acs.molpharmaceut.8b01012] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Puerarin (PU) has emerged as a promising herb-derived anti-Parkinsonism compound. However, the undesirable water solubility as well as the unwanted bioavailability of PU limit its application. Therefore, this study aimed to develop and characterize PU nanocrystals (PU-NCs) with enhanced oral bioavailability and improved brain accumulation for the treatment of Parkinson's disease (PD). The fabricated PU-NCs were approximately spherical, with a mean size of 83.05 ± 1.96 nm, a PDI of 0.047 ± 0.009, a drug loading of 72.7%, and a rapid dissolution rate in vitro. Molecular dynamics simulation of PU and Pluronic F68 demonstrated the interaction energy and binding energy of -88.1 kJ/mol and -40.201 ± 0.685 kJ/mol, respectively, indicating a spontaneous binding with van der Waals interactions. In addition, the cellular uptake and permeability of PU-NCs were significantly enhanced as compared to PU alone ( p < 0.01). Moreover, PU-NCs exerted a significant neuroprotective effect against the cellular damage induced by the 1-methyl-4-phenylpyridinium ion (MPP+). Besides, PU-NCs demonstrated no obvious toxic effects on zebrafish, as evidenced by the unaltered morphology, hatching, survival rate, body length, and heart rate. Fluorescence resonance energy transfer (FRET) imaging revealed that intact nanocrystals were found in the intestine and brain of adult zebrafish gavaged with DiO/DiI/PU-NCs. Increased values of Cmax and AUC0- t were observed in the plasma of rats following oral administration of PU-NCs compared to PU suspension. Likewise, brain accumulation of PU-NCs was higher than that of PU suspension. Furthermore, PU-NCs attenuated dopamine depletion, ameliorated 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced behavioral deficits, and enhanced the levels of dopamine and its metabolites. Taken altogether, this study provides evidence that PU-NCs could be exploited as a potential oral delivery system to treat PD, by improving the poor bioavailability of PU and enhancing their delivery into the brain.
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Affiliation(s)
- Sha Xiong
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Wei Liu
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Dongli Li
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Xiaojia Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences , University of Macau , Macau , China
| | - Fang Liu
- Institute of Tropical Medicine , Guangzhou University of Chinese Medicine , Guangzhou 501405 , China
| | - Dongsheng Yuan
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Huafeng Pan
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Qi Wang
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Shuhuan Fang
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
| | - Tongkai Chen
- Institute of Clinical Pharmacology , Guangzhou University of Chinese Medicine , Guangzhou 510405 , China
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11
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He X, Cai K, Zhang Y, Lu Y, Guo Q, Zhang Y, Liu L, Ruan C, Chen Q, Chen X, Li C, Sun T, Cheng J, Jiang C. Dimeric Prodrug Self-Delivery Nanoparticles with Enhanced Drug Loading and Bioreduction Responsiveness for Targeted Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39455-39467. [PMID: 30362704 PMCID: PMC7470019 DOI: 10.1021/acsami.8b09730] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Efficient drug accumulation in tumor cells is essential for cancer therapy. Herein, we developed dimeric prodrug self-delivery nanoparticles (NPs) with enhanced drug loading and bioreduction responsiveness for triple negative breast cancer (TNBC) therapy. Specially designed camptothecin dimeric prodrug (CPTD) containing a disulfide bond was constructed to realize intracellular redox potential controlled drug release. Direct conjugation of hydrophobic CPTD to poly(ethylene glycol) PEG5000, a prodrug-based amphiphilic CPTD-PEG5000 co-polymer was synthesized, which could encapsulate parental CPTD prodrug spontaneously and form ultrastable NPs due to the highly analogous structure. Such dimeric prodrug self-delivery nanoparticles showed ultrahigh stability with critical micelle concentration as low as 0.75 μg/mL and remained intact during endocytosis. In addition, neurotensin (NT), a 13 amino acid ligand, was further modified on the nanoparticles for triple negative breast cancer (TNBC) targeting. Optimized NT-CPTD NPs showed improved pharmacokinetics profile and increased drug accumulation in TNBC lesions than free CPT, which largely reduced the systemic toxicity and presented an improved anticancer efficacy in vivo. In summary, with advantages of extremely high drug loading capacity, tumor microenvironmental redox responsiveness, and targeted TNBC accumulation, NT-CPTD NPs showed their potential for effective triple negative breast cancer therapy.
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Affiliation(s)
- Xi He
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Kaimin Cai
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green Street, Urbana, Illinois 61801, United States
| | - Yu Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Yifei Lu
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Qin Guo
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Yujie Zhang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Lisha Liu
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Chunhui Ruan
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Qinjun Chen
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Xinli Chen
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Chao Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Tao Sun
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
| | - Jianjun Cheng
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 W. Green Street, Urbana, Illinois 61801, United States
| | - Chen Jiang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, State Key Laboratory of Medical Neurobiology, School of Pharmacy, Fudan University, Shanghai 200032, China
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12
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Hoffmann S, Gorzelanny C, Moerschbacher B, Goycoolea FM. Physicochemical Characterization of FRET-Labelled Chitosan Nanocapsules and Model Degradation Studies. NANOMATERIALS 2018; 8:nano8100846. [PMID: 30336593 PMCID: PMC6215305 DOI: 10.3390/nano8100846] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/03/2018] [Accepted: 10/16/2018] [Indexed: 12/19/2022]
Abstract
Sub-micron o/w emulsions coated with chitosan have been used for drug delivery, quorum sensing inhibition, and vaccine development. To study interactions with biological systems, nanocapsules have been fluorescently labelled in previous works, but it is often difficult to distinguish the released label from intact nanocapsules. In this study, we present advanced-labelling strategies based on Förster Resonance Energy Transfer (FRET) measurements for chitosan-coated nanocapsules and investigate their dissolution and degradation. We used FRET measurements of nanocapsules loaded with equimolar concentrations of two fluorescent dyes in their oily core and correlated them with dynamic light scattering (DLS) count rate measurement and absorbance measurements during their disintegration by dissolution. Using count rate measurements, we also investigated the enzymatic degradation of nanocapsules using pancreatin and how protein corona formation influences their degradation. Of note, nanocapsules dissolved in ethanol, while FRET decreased simultaneously with count rate, and absorbance was caused by nanocapsule turbidity, indicating increased distance between dye molecules after their release. Nanocapsules were degradable by pancreatin in a dose-dependent manner, and showed a delayed enzymatic degradation after protein corona formation. We present here novel labelling strategies for nanocapsules that allow us to judge their status and an in vitro method to study nanocapsule degradation and the influence of surface characteristics.
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Affiliation(s)
- Stefan Hoffmann
- Institute of Plant Biology and Biotechnology (IBBP), Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143 Münster, Germany.
| | - Christian Gorzelanny
- Department of Dermatology and Venerology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Bruno Moerschbacher
- Institute of Plant Biology and Biotechnology (IBBP), Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143 Münster, Germany.
| | - Francisco M Goycoolea
- Institute of Plant Biology and Biotechnology (IBBP), Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143 Münster, Germany.
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK.
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13
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Teunissen AJP, Pérez-Medina C, Meijerink A, Mulder WJM. Investigating supramolecular systems using Förster resonance energy transfer. Chem Soc Rev 2018; 47:7027-7044. [PMID: 30091770 PMCID: PMC6441672 DOI: 10.1039/c8cs00278a] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Supramolecular systems have applications in areas as diverse as materials science, biochemistry, analytical chemistry, and nanomedicine. However, analyzing such systems can be challenging due to the wide range of time scales, binding strengths, distances, and concentrations at which non-covalent phenomena take place. Due to their versatility and sensitivity, Förster resonance energy transfer (FRET)-based techniques are excellently suited to meet such challenges. Here, we detail the ways in which FRET has been used to study non-covalent interactions in both synthetic and biological supramolecular systems. Among other topics, we examine methods to measure molecular forces, determine protein conformations, monitor assembly kinetics, and visualize in vivo drug release from nanoparticles. Furthermore, we highlight multiplex FRET techniques, discuss the field's limitations, and provide a perspective on new developments.
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Affiliation(s)
- Abraham J. P. Teunissen
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
| | - Carlos Pérez-Medina
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
| | - Andries Meijerink
- Department of Chemistry, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Willem J. M. Mulder
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY 10029, USA
- Department of Medical Biochemistry, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Laboratory of Chemical biology, Department of Biomedical Engineering and Institute for Complex Molecular systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, The Netherlands
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14
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Li X, Figg CA, Wang R, Jiang Y, Lyu Y, Sun H, Liu Y, Wang Y, Teng IT, Hou W, Cai R, Cui C, Li L, Pan X, Sumerlin BS, Tan W. Cross-Linked Aptamer-Lipid Micelles for Excellent Stability and Specificity in Target-Cell Recognition. Angew Chem Int Ed Engl 2018; 57:11589-11593. [PMID: 30079455 PMCID: PMC6442728 DOI: 10.1002/anie.201804682] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Indexed: 11/07/2022]
Abstract
The specific binding ability of DNA-lipid micelles (DLMs) can be increased by the introduction of an aptamer. However, supramolecular micellar structures based on self-assemblies of amphiphilic DLMs are expected to demonstrate low stability when interacting with cell membranes under certain conditions, which could lead to a reduction in selectivity for targeting cancer cells. We herein report a straightforward cross-linking strategy that relies on a methacrylamide branch to link aptamer and lipid segments. By an efficient photoinduced polymerization process, covalently linked aptamer-lipid units help stabilize the micelle structure and enhance aptamer probe stability, further improving the targeting ability of the resulting nanoassembly. Besides the development of a facile cross-linking method, this study clarifies the relationship between aptamer-lipid concentration and the corresponding binding ability.
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Affiliation(s)
- Xiaowei Li
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiology and Functional Genomics Health Cancer Center, UF Genetics Institute and McKnight Brain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - C. Adrian Figg
- George and Josephine Butler Polymer Research Laboratory Center for Macromolecular Science and Engineering Department of Chemistry, University of Florida Gainesville, FL 32611-7200 (USA)
| | - Ruowen Wang
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Life Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha, Hunan, 410082 (China), Institute of Molecular Medicine, Renji Hospital, Shanghai Jiao Tong University School of Medicine, College of Chemistry and Chemical Engineering, Shanghai, 200240 (China)
| | - Ying Jiang
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA), Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China)
| | - Yifan Lyu
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA), Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China)
| | - Hao Sun
- George and Josephine Butler PolymerResearch Laboratory Center for Macromolecular Science and Engineering Department of Chemistry,University of Florida Gainesville, FL 32611-7200 (USA)
| | - Yuan Liu
- Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China)
| | - Yanyue Wang
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - I-Ting Teng
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - Weijia Hou
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - Ren Cai
- Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China)
| | - Cheng Cui
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA), Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China)
| | - Long Li
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - Xiaoshu Pan
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA)
| | - Brent S. Sumerlin
- George and Josephine Butler PolymerResearch Laboratory Center for Macromolecular Science and Engineering Department of Chemistry,University of Florida Gainesville, FL 32611-7200 (USA)
| | - Weihong Tan
- Center for Research at the Bio/Nano Interface, Department of Chemistry and Department of Physiologyand Functional Genomics Health Cancer Center,UFGenetics Institute and McKnightBrain Institute, University of Florida Gainesville, FL 32611 (USA), Molecular Science and Biomedicine Laboratory (MBL), State Key LaboratoryofChemo/Bio-SensingandChemometrics,CollegeofLife Sciences and College of Chemistry and Chemical Engineering Aptamer Engineering, Center of Hunan Province, Hunan University Changsha,Hunan, 410082 (China), Institute of Molecular Medicine,Renji Hospital,Shanghai Jiao Tong UniversitySchool of Medicine, College of Chemistry and Chemical Engineering, Shanghai, 200240 (China)
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15
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Li X, Figg CA, Wang R, Jiang Y, Lyu Y, Sun H, Liu Y, Wang Y, Teng IT, Hou W, Cai R, Cui C, Li L, Pan X, Sumerlin BS, Tan W. Cross-Linked Aptamer-Lipid Micelles for Excellent Stability and Specificity in Target-Cell Recognition. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804682] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiaowei Li
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - C. Adrian Figg
- George and Josephine Butler Polymer Research Laboratory; Center for Macromolecular Science and Engineering; Department of Chemistry; University of Florida; Gainesville FL 32611-7200 USA
| | - Ruowen Wang
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
- Institute of Molecular Medicine, Renji Hospital; Shanghai Jiao Tong University School of Medicine; College of Chemistry and Chemical Engineering; Shanghai 200240 China
| | - Ying Jiang
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
| | - Yifan Lyu
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
- Institute of Molecular Medicine, Renji Hospital; Shanghai Jiao Tong University School of Medicine; College of Chemistry and Chemical Engineering; Shanghai 200240 China
| | - Hao Sun
- George and Josephine Butler Polymer Research Laboratory; Center for Macromolecular Science and Engineering; Department of Chemistry; University of Florida; Gainesville FL 32611-7200 USA
| | - Yuan Liu
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
| | - Yanyue Wang
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - I-Ting Teng
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - Weijia Hou
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - Ren Cai
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
| | - Cheng Cui
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
| | - Long Li
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - Xiaoshu Pan
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
| | - Brent S. Sumerlin
- George and Josephine Butler Polymer Research Laboratory; Center for Macromolecular Science and Engineering; Department of Chemistry; University of Florida; Gainesville FL 32611-7200 USA
| | - Weihong Tan
- Center for Research at the Bio/Nano Interface; Department of Chemistry and Department of Physiology and Functional Genomics; Health Cancer Center; UF Genetics Institute and McKnight Brain Institute; University of Florida; Gainesville FL 32611 USA
- Molecular Science and Biomedicine Laboratory (MBL); State Key Laboratory of Chemo/Bio-Sensing and Chemometrics; College of Life Sciences and College of Chemistry and Chemical Engineering; Aptamer Engineering; Center of Hunan Province; Hunan University; Changsha Hunan 410082 China
- Institute of Molecular Medicine, Renji Hospital; Shanghai Jiao Tong University School of Medicine; College of Chemistry and Chemical Engineering; Shanghai 200240 China
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16
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Ridolfo R, Ede BC, Diamanti P, White PB, Perriman AW, van Hest JCM, Blair A, Williams DS. Biodegradable, Drug-Loaded Nanovectors via Direct Hydration as a New Platform for Cancer Therapeutics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703774. [PMID: 29999236 DOI: 10.1002/smll.201703774] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/20/2018] [Indexed: 06/08/2023]
Abstract
The stabilization and transport of low-solubility drugs, by encapsulation in nanoscopic delivery vectors (nanovectors), is a key paradigm in nanomedicine. However, the problems of carrier toxicity, specificity, and producibility create a bottleneck in the development of new nanomedical technologies. Copolymeric nanoparticles are an excellent platform for nanovector engineering due to their structural versatility; however, conventional fabrication processes rely upon harmful chemicals that necessitate purification. In engineering a more robust (copolymeric) nanovector platform, it is necessary to reconsider the entire process from copolymer synthesis through self-assembly and functionalization. To this end, a process is developed whereby biodegradable copolymers of poly(ethylene glycol)-block-poly(trimethylene carbonate), synthesized via organocatalyzed ring-opening polymerization, undergo assembly into highly uniform, drug-loaded micelles without the use of harmful solvents or the need for purification. The direct hydration methodology, employing oligo(ethylene glycol) as a nontoxic dispersant, facilitates rapid preparation of pristine, drug-loaded nanovectors that require no further processing. This method is robust, fast, and scalable. Utilizing parthenolide, an exciting candidate for treatment of acute lymphoblastic leukemia (ALL), discrete nanovectors are generated that show strikingly low carrier toxicity and high levels of specific therapeutic efficacy against primary ALL cells (as compared to normal hematopoietic cells).
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Affiliation(s)
- Roxane Ridolfo
- Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Benjamin C Ede
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK
| | - Paraskevi Diamanti
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Bristol, BS34 7QH, UK
| | - Paul B White
- Institute for Molecules and Materials, Radboud University, 6525 AJ, Nijmegen, The Netherlands
| | - Adam W Perriman
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK
| | - Jan C M van Hest
- Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Allison Blair
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Bristol, BS34 7QH, UK
| | - David S Williams
- Biomedical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- Department of Chemistry, Swansea University, Swansea, SA2 8PP, UK
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17
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Palanikumar L, Choi ES, Oh JY, Park SA, Choi H, Kim K, Kim C, Ryu JH. Importance of Encapsulation Stability of Nanocarriers with High Drug Loading Capacity for Increasing in Vivo Therapeutic Efficacy. Biomacromolecules 2018; 19:3030-3039. [PMID: 29883544 DOI: 10.1021/acs.biomac.8b00589] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Current drug delivery systems are hampered by poor delivery to tumors, in part reflecting poor encapsulation stability of nanocarriers. Although nanocarriers such as polymeric micelles have high colloidal stability and do not aggregate or precipitate in bulk solution, nanocarriers with low encapsulation stability can lose their cargo during circulation in blood due to interactions with blood cells, cellular membranes, serum proteins, and other biomacromolecules. The resulting premature drug release from carriers limits the therapeutic efficacy at target sites. Herein, we report a simple and robust technique to improve encapsulation stability of drug delivery systems. Specifically, we show that installation of disulfide cross-linked noncovalent polymer gatekeepers onto mesoporous silica nanoparticles with a high loading capacity for hydrophobic drugs enhances in vivo therapeutic efficacy by preventing premature release of cargo. Subsequent release of drug cargos was triggered by cleavage of disulfide cross-linking by glutathione, leading to improved antitumor activity of doxoroubicin in mice. These findings provide novel insights into the development of nanocarriers with high encapsulation stability and improved in vivo therapeutic efficacy.
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18
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Enhanced uptake in 2D- and 3D- lung cancer cell models of redox responsive PEGylated nanoparticles with sensitivity to reducing extra- and intracellular environments. J Control Release 2018. [PMID: 29534890 DOI: 10.1016/j.jconrel.2018.03.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In the treatment of lung cancer, there is an urgent need of innovative medicines to optimize pharmacological responses of conventional chemotherapeutics while attenuating side effects. Here, we have exploited some relatively unexplored subtle differences in reduction potential, associated with cancer cell microenvironments in addition to the well-known changes in intracellular redox environment. We report the synthesis and application of novel redox-responsive PLGA (poly(lactic-co-glycolic acid)) -PEG (polyethylene glycol) nanoparticles (RR-NPs) programmed to change surface properties when entering tumor microenvironments, thus enhancing cell internalization of the particles and their drug cargo. The new co-polymers, in which PEG and PLGA were linked by 'anchiomeric effector' dithiylethanoate esters, were synthesized by a combination of ring-opening polymerization and Michael addition reactions and employed to prepare NPs. Non redox-responsive nanoparticles (nRR-NPs) based on related PLGA-PEG copolymers were also prepared as comparators. Spherical NPs of around 120 nm diameter with a low polydispersity index and negative zeta potential as well as good drug loading of docetaxel were obtained. The NPs showed prolonged stability in relevant simulated biological fluids and a high ability to penetrate an artificial mucus layer due to the presence of the external PEG coating. Stability, FRET and drug release studies in conditions simulating intracellular reductive environments demonstrated a fast disassembly of the external shell of the NPs, thus triggering on-demand drug release. FACS measurements and confocal microscopy showed increased and faster uptake of RR-NPs in both 2D- and 3D- cell culture models of lung cancer compared to nRR-NPs. In particular, the 'designed-in' reductive instability of RR-NPs in conditioned cell media, the fast PEG release in the extracellular compartment, as well as a diminution of uptake rate in control experiments where extracellular thiols were neutralized, suggested a partial extracellular release of the PEG fringe that promoted rapid internalization of the residual NPs into cells. Taken together, these results provide further evidence of the effectiveness of PEGylated reducible nanocarriers to permeate mucus layer barriers, and establish a new means to enhance cancer cell uptake of drug carriers by extra-and intra-cellular cleavage of protein- and cell-shielding hydrophilic blocks.
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19
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Synergistic antitumor effects of combination PI3K/mTOR and MEK inhibition (SAR245409 and pimasertib) in mucinous ovarian carcinoma cells by fluorescence resonance energy transfer imaging. Oncotarget 2018; 7:29577-91. [PMID: 27102436 PMCID: PMC5045418 DOI: 10.18632/oncotarget.8807] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 03/29/2016] [Indexed: 11/25/2022] Open
Abstract
The aim of this study was to clarify the synergistic effects of dual inhibition of the PI3K/mTOR and MAPK pathways in ovarian mucinous carcinoma (OMC) cells, using fluorescence resonance energy transfer (FRET) imaging. We exposed 6 OMC cell lines to a PI3K/mTOR inhibitor (voxtalisib, SAR245409) and/or a MEK inhibitor (pimasertib), and evaluated synergistic effects using the Chou-Talalay method. Then, S6K (PI3K pathway) and ERK (MAPK pathway) kinase activities, and their individual proliferative or cytotoxic effects were calculated by time-lapse FRET imaging. In combination with SAR245409, pimasertib (30 nM) synergistically inhibited cell growth (combination indexes: 0.03-0.5) and induced apoptosis in all 6 OMC cell lines. FRET-imaging results demonstrated that ERK inhibition induced both anti-proliferation and apoptosis in a dose-dependent manner in both MCAS and OAW42 cells. However, S6K inhibition suppressed proliferation in a threshold manner in both cell lines, although apoptosis was only induced in OAW42 cells. These results demonstrated that combined PI3K/mTOR and MEK inhibition exhibited synergistic antitumor effects in OMC cells and that FRET imaging is useful for analyzing kinase activities in live cells and elucidating their cytostatic and cytotoxic effects.
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20
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Fan H, Li Y, Yang J, Ye X. Effect of Hydrophobic Chain Length on the Stability and Guest Exchange Behavior of Shell-Sheddable Micelles Formed by Disulfide-Linked Diblock Copolymers. J Phys Chem B 2017; 121:9708-9717. [PMID: 28925709 DOI: 10.1021/acs.jpcb.7b06165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reduction-responsive micelles hold enormous promise for application as drug carriers due to the fast drug release triggered by reducing conditions and high anticancer activity. However, the effect of hydrophobic chain length on the stability and guest exchange of reduction-responsive micelles, especially for the micelles formed by diblock copolymers containing single disulfide group, is not fully understood. Here, shell-sheddable micelles formed by a series of disulfide-linked copolymer poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-SS-PCL) containing the same chain length of PEG but different chain lengths of hydrophobic block PCL were prepared and well characterized. The influence of the chain length of hydrophobic PCL block on the stability and guest exchange of PEG-SS-PCL micelles was studied by the use of both dynamic laser light scattering (DLS) and fluorescence resonance energy transfer (FRET). The results show that longer PCL chains lead to a slower aggregation rate and guest exchange of micelles in the aqueous solutions containing 10 mM dithiothreitol (DTT). The cell uptake of the shell-sheddable PEG-SS-PCL micelles in vitro shows that the amount of internalization of dyes loaded in PEG-SS-PCL micelles increases with the chain length of hydrophobic PCL block investigated by flow cytometric analysis and confocal fluorescence microscopy.
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Affiliation(s)
- Haiyan Fan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Yixia Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Jinxian Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
| | - Xiaodong Ye
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics and ‡CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, China
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21
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Bawa KK, Oh JK. Stimulus-Responsive Degradable Polylactide-Based Block Copolymer Nanoassemblies for Controlled/Enhanced Drug Delivery. Mol Pharm 2017; 14:2460-2474. [DOI: 10.1021/acs.molpharmaceut.7b00284] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kamaljeet K. Bawa
- Department of Chemistry and
Biochemistry, Concordia University, Montreal, Quebec, Canada H4B 1R6
| | - Jung Kwon Oh
- Department of Chemistry and
Biochemistry, Concordia University, Montreal, Quebec, Canada H4B 1R6
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22
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Roger E, Gimel JC, Bensley C, Klymchenko AS, Benoit JP. Lipid nanocapsules maintain full integrity after crossing a human intestinal epithelium model. J Control Release 2017; 253:11-18. [PMID: 28274740 DOI: 10.1016/j.jconrel.2017.03.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/27/2017] [Accepted: 03/03/2017] [Indexed: 01/02/2023]
Abstract
Lipid nanocapsules (LNCs) have demonstrated great potential for the oral delivery of drugs having very limited oral bioavailability (BCS class II, III and IV molecules). It has been shown previously that orally-administered LNCs can permeate through mucus, increase drug absorption by the epithelial tissue, and finally, increase drug bioavailability. However, even if transport mechanisms through mucus and the intestinal barrier have already been clarified, the preservation of particle integrity is still not known. The aim of the present work is to study in vitro the fate of LNCs after their transportation across an intestinal epithelium model (Caco-2 cell model). For this, two complementary techniques were employed: Förster Resonance Energy Transfer (FRET) and Nanoparticle Tracking Analysis (NTA). Results showed, after 2h, the presence of nanoparticles in the basolateral side of the cell layer and a measurable FRET signal. This provides very good evidence for the transcellular intact crossing of the nanocarriers.
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Affiliation(s)
- Emilie Roger
- MINT, UNIV Angers, INSERM 1066, CNRS 6021, Université Bretagne Loire, IBS- CHU, 4 rue Larrey, 49933 Angers, France.
| | - Jean-Christophe Gimel
- MINT, UNIV Angers, INSERM 1066, CNRS 6021, Université Bretagne Loire, IBS- CHU, 4 rue Larrey, 49933 Angers, France
| | - Conor Bensley
- MINT, UNIV Angers, INSERM 1066, CNRS 6021, Université Bretagne Loire, IBS- CHU, 4 rue Larrey, 49933 Angers, France
| | - Andrey S Klymchenko
- University of Strasbourg, CNRS UMR7213, Laboratoire de Biophotonique et Pharmacologie, 74 Route du Rhin, 67401 Illkirch, Cedex, France
| | - Jean-Pierre Benoit
- MINT, UNIV Angers, INSERM 1066, CNRS 6021, Université Bretagne Loire, IBS- CHU, 4 rue Larrey, 49933 Angers, France
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23
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Hu X, Dong X, Lu Y, Qi J, Zhao W, Wu W. Bioimaging of nanoparticles: the crucial role of discriminating nanoparticles from free probes. Drug Discov Today 2016; 22:382-387. [PMID: 27742534 DOI: 10.1016/j.drudis.2016.10.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 09/02/2016] [Accepted: 10/03/2016] [Indexed: 12/16/2022]
Abstract
The biological fate of nanocarriers has yet to be fully explored, mainly because of the lack of functional tools like probes to identify integral nanocarriers in the body. Understanding their in vivo fate remains as the bottleneck to the development of nanomedicines. Bioimaging results based on conventional fluorescent or radioactive probes should be judged critically because images merely reflect bulk signals of an admixture of the nanoparticles and free probes. It is crucial to discriminate between nanocarrier-bound and free signals. This review analyzes the state-of-the-art of bioimaging of nanoparticles in vivo and highlights directions for future endeavours.
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Affiliation(s)
- Xiongwei Hu
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China; School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Xiaochun Dong
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China
| | - Yi Lu
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China
| | - Jianping Qi
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China
| | - Weili Zhao
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China; Key Laboratory for Special Functional Materials of the Ministry of Education, Henan University, Kaifeng, China
| | - Wei Wu
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery of MOE and PLA, Shanghai, China.
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24
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Tang S, Donaphon B, Levitus M, Raymo FM. Structural Implications on the Properties of Self-Assembling Supramolecular Hosts for Fluorescent Guests. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8676-8687. [PMID: 27490893 DOI: 10.1021/acs.langmuir.6b01549] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nine amphiphilic macromolecules with decyl and oligo(ethylene glycol) side chains, randomly distributed along a common poly(methacrylate) backbone, were synthesized from the radical copolymerization of appropriate methacrylate monomers. The resulting amphiphilic constructs differ in (1) the ratio between their hydrophobic and hydrophilic components, (2) the length of their oligo(ethylene glycol) chains, and/or (3) the molecular weight. When the ratio between hydrophobic and hydrophilic segments is comprised between 6:1 and 1:2, the macromolecules assemble spontaneously into particles with nanoscaled dimensions in neutral buffer and capture hydrophobic borondipyrromethene chromophores in their interior. However, the critical concentration required for the assembly of these supramolecular hosts as well as their hydrodynamic diameter, supramolecular weight, and number of constituent macromolecular building blocks all vary monotonically with the ratio between hydrophobic and hydrophilic components. Specifically, the critical concentration decreases and the other three parameters increase as the relative hydrophobic content raises. Furthermore, an increase in the relative hydrophobic content also discourages interchromophoric interactions between entrapped guests in both ground and excited states as well as delays access of potential quenchers. In fact, these observations demonstrate that the hydrophobic components must be in excess over their hydrophilic counterparts for optimal supramolecular hosts to assemble. Indeed, a ratio of 6:1 between the numbers of decyl and oligo(ethylene glycol) side chains appears to be ideal for this particular structural design. Under these conditions, supramolecular hosts assemble spontaneously even at relatively low polymer concentrations and their fluorescent guests do not escape into the bulk aqueous solution, despite the reversibility of the noncovalent interactions holding the supramolecular container together. Thus, these systematic investigations provide invaluable structural guidelines to design self-assembling supramolecular hosts with optimal composition for the effective encapsulation of fluorescent guests and can lead to ideal delivery vehicles for the transport of imaging probes to target locations in biological samples.
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Affiliation(s)
- Sicheng Tang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Bryan Donaphon
- School of Molecular Sciences and The Biodesign Institute, Arizona State University , Tempe, Arizona 85287-5601, United States
| | - Marcia Levitus
- School of Molecular Sciences and The Biodesign Institute, Arizona State University , Tempe, Arizona 85287-5601, United States
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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25
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Li A, Zhang D. Synthesis and Characterization of Cleavable Core-Cross-Linked Micelles Based on Amphiphilic Block Copolypeptoids as Smart Drug Carriers. Biomacromolecules 2016; 17:852-61. [PMID: 26866458 DOI: 10.1021/acs.biomac.5b01561] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Amphiphilic block copolypeptoids consisting of a hydrophilic poly(N-ethyl glycine) segment and a hydrophobic poly[(N-propargyl glycine)-r-(N-decyl glycine)] random copolymer segment [PNEG-b-P(NPgG-r-NDG), EPgD] have been synthesized by sequential primary amine-initiated ring-opening polymerization (ROP) of the corresponding N-alkyl N-carboxyanhydride monomers. The block copolypeptoids form micelles in water and the micellar core can be cross-linked with a disulfide-containing diazide cross-linker by copper-mediated alkyne-azide cycloaddition (CuAAC) in aqueous solution. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) analysis revealed the formation of spherical micelles with uniform size for both the core-cross-linked micelles (CCLMs) and non-cross-linked micelles (NCLMs) precursors for selective block copolypeptoid polymers. The CCLMs exhibited increased dimensional stability relative to the NCLMs in DMF, a nonselective solvent for the core and corona segments. Micellar dissociation of CCLMs can be induced upon addition of a reducing agent (e.g., dithiothreitol) in dilute aqueous solutions, as verified by a combination of fluorescence spectroscopy, size exclusion chromatography (SEC), and (1)H NMR spectroscopic measurement. Doxorubicin (DOX), an anticancer drug, can be loaded into the hydrophobic core of CCLMs with a maximal 23% drug loading capacity (DLC) and 37% drug loading efficiency (DLE). In vitro DOX release from the CCLMs can be triggered by DTT (10 mM), in contrast to significantly reduced DOX release in the absence of DTT, attesting to the reductively responsive characteristic of the CCLMs. While the CCLMs exhibited minimal cytotoxicity toward HepG2 cancer cells, DOX-loaded CCLMs inhibited the proliferation of the HepG2 cancer cells in a concentration and time dependent manner, suggesting the controlled release of DOX from the DOX-loaded CCLMS in the cellular environment.
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Affiliation(s)
- Ang Li
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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26
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Ragab SS, Thapaliya ER, Zhang Y, Tang S, McMahan JB, Syed S, Captain B, Raymo FM. Synthesis in living cells with the assistance of supramolecular nanocarriers. RSC Adv 2016. [DOI: 10.1039/c6ra04335f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Supramolecular nanocarriers transport complementary reactants inside living cells in consecutive internalization steps to allow their reaction exclusively in the intracellular space with the formation of a fluorescent product.
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Affiliation(s)
- Sherif Shaban Ragab
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Ek Raj Thapaliya
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Yang Zhang
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Sicheng Tang
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | | | - Sheyum Syed
- Department of Physics
- University of Miami
- Coral Gables
- USA
| | - Burjor Captain
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
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27
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Braun T, Kleusch C, Naumovska E, Merkel R, Csiszár A. A bioanalytical assay to distinguish cellular uptake routes for liposomes. Cytometry A 2015; 89:301-8. [DOI: 10.1002/cyto.a.22792] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/17/2015] [Accepted: 10/05/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Tobias Braun
- ICS-7: Biomechanics; Forschungszentrum Jülich GmbH, Institute of Complex Systems; Jülich 52425 Germany
| | - Christian Kleusch
- ICS-7: Biomechanics; Forschungszentrum Jülich GmbH, Institute of Complex Systems; Jülich 52425 Germany
| | - Elena Naumovska
- ICS-7: Biomechanics; Forschungszentrum Jülich GmbH, Institute of Complex Systems; Jülich 52425 Germany
| | - Rudolf Merkel
- ICS-7: Biomechanics; Forschungszentrum Jülich GmbH, Institute of Complex Systems; Jülich 52425 Germany
| | - Agnes Csiszár
- ICS-7: Biomechanics; Forschungszentrum Jülich GmbH, Institute of Complex Systems; Jülich 52425 Germany
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28
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Thapaliya ER, Fowley C, Callan B, Tang S, Zhang Y, Callan JF, Raymo FM. Energy-Transfer Schemes To Probe Fluorescent Nanocarriers and Their Emissive Cargo. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9557-9565. [PMID: 26275045 DOI: 10.1021/acs.langmuir.5b01949] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A strategy to probe supramolecular nanocarriers and their cargo in the intracellular space was developed on the basis of fluorescence measurements and energy transfer. It relies on the covalent attachment of an energy donor, or acceptor, to the macromolecular backbone of amphiphilic polymers and the noncovalent encapsulation of a complementary acceptor, or donor, in the resulting micelles. In aqueous environments, these macromolecules self-assemble into nanostructured constructs and bring the complementary chromophores in close proximity to enable efficient energy transfer. These supramolecular assemblies travel from the extracellular to the intracellular space and retain their integrity in the process. Indeed, donors and acceptors remain close to each other after internalization, and excitation of the former chromophores translates into significant intracellular emission from the latter. Furthermore, these supramolecular assemblies exchange their components with fast kinetics in aqueous dispersions because of the reversible character of the noncovalent contacts holding them together. As a result, micelles incorporating exclusively the donors and nanocarriers containing only the acceptors scramble their chromophoric building blocks, upon mixing, to allow the transfer of energy. These dynamic processes can be reproduced in the intracellular environment with the sequential incubation of cells with the two sets of complementary nanostructured assemblies. Thus, these operating principles and choice of supramolecular synthons are particularly valuable to monitor self-assembling nanocarriers and their cargo inside living cells and can facilitate the elucidation of the behavior of these promising delivery vehicles in a diversity of biological specimens.
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Affiliation(s)
- Ek Raj Thapaliya
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Colin Fowley
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster , Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Bridgeen Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster , Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Sicheng Tang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Yang Zhang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - John F Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster , Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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29
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Swaminathan S, Fowley C, Thapaliya ER, McCaughan B, Tang S, Fraix A, Captain B, Sortino S, Callan JF, Raymo FM. Supramolecular nanoreactors for intracellular singlet-oxygen sensitization. NANOSCALE 2015; 7:14071-14079. [PMID: 26238536 DOI: 10.1039/c5nr02672e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An amphiphilic polymer with multiple decyl and oligo(ethylene glycol) chains attached to a common poly(methacrylate) backbone assembles into nanoscaled particles in aqueous environments. Hydrophobic anthracene and borondipyrromethene (BODIPY) chromophores can be co-encapsulated within the self-assembling nanoparticles and transported across hydrophilic media. The reversible character of the noncovalent bonds, holding the supramolecular containers together, permits the exchange of their components with fast kinetics in aqueous solution. Incubation of cervical cancer (HeLA) cells with a mixture of two sets of nanoparticles, pre-loaded independently with anthracene or BODIPY chromophores, results in guest scrambling first and then transport of co-entrapped species to the intracellular space. Alternatively, incubation of cells with the two sets of nanocarriers in consecutive steps permits the sequential transport of the anthracene and BODIPY chromophores across the plasma membrane and only then allows their co-encapsulation within the same supramolecular containers. Both mechanisms position the two sets of chromophores with complementary spectral overlap in close proximity to enable the efficient transfer of energy intracellularly from the anthracene donors to the BODIPY acceptors. In the presence of iodine substituents on the BODIPY platform, intersystem crossing follows energy transfer. The resulting triplet state can transfer energy further to molecular oxygen with the concomitant production of singlet oxygen to induce cell mortality. Furthermore, the donor can be excited with two near-infrared photons simultaneously to permit the photoinduced generation of singlet oxygen intracellularly under illumination conditions compatible with applications in vivo. Thus, these supramolecular strategies to control the excitation dynamics of multichromophoric assemblies in the intracellular environment can evolve into valuable protocols for photodynamic therapy.
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Affiliation(s)
- Subramani Swaminathan
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, USA.
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30
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Palanikumar L, Kim HY, Oh JY, Thomas AP, Choi ES, Jeena MT, Joo SH, Ryu JH. Noncovalent Surface Locking of Mesoporous Silica Nanoparticles for Exceptionally High Hydrophobic Drug Loading and Enhanced Colloidal Stability. Biomacromolecules 2015. [DOI: 10.1021/acs.biomac.5b00589] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- L. Palanikumar
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Ho Young Kim
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Joon Yong Oh
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Ajesh P. Thomas
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Eun Seong Choi
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - M. T. Jeena
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Sang Hoon Joo
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Ja-Hyoung Ryu
- Department of Chemistry,
School of Natural Science,
and ‡Department of Chemical
Engineering, School of Energy and Chemical Engineering, Ulsan National Institutes of Science and Technology (UNIST), Ulsan 689-798, Korea
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31
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Wilner SE, Sparks SE, Cowburn D, Girvin ME, Levy M. Controlling lipid micelle stability using oligonucleotide headgroups. J Am Chem Soc 2015; 137:2171-4. [PMID: 25634639 DOI: 10.1021/ja512012m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Lipid-based micelles provide an attractive option for therapeutic and diagnostic applications because of their small size (<20 nm) and ability to self-assemble and improve the solubility of both hydrophobic drugs and dyes. Their use, however, has been challenged by the fact that these particles are inherently unstable in serum becaue of interactions with protein components, which drives the micelle equilibrium to the monomeric state. We have engineered serum stabilized micelles using short quadruplex forming oligonucleotide extensions as the lipid headgroup. Quadruplex formation on the surface of the particles, confirmed by (1)H NMR, results in slight distortion of the otherwise spherical micelles and renders them resistant to disassembly by serum proteins for >24 h. Using antisense oligonucleotides we demonstrated that disruption of the quadruplex leads to micelle destabilization and cargo release. The ability to use oligonucleotide interactions to control lipid particle stability represents a new approach in the design of programmed nanoscale devices.
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Affiliation(s)
- Samantha E Wilner
- Department of Biochemistry, Albert Einstein College of Medicine , Bronx, New York 10461, United States
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32
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Ng KK, Takada M, Jin CC, Zheng G. Self-Sensing Porphysomes for Fluorescence-Guided Photothermal Therapy. Bioconjug Chem 2015; 26:345-51. [DOI: 10.1021/bc500595d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kenneth K. Ng
- Princess
Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Misa Takada
- Princess
Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Department
of Chemistry, Osaka University, Osaka 560-0043, Japan
| | - Cheng C.S. Jin
- Princess
Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Gang Zheng
- Princess
Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, Ontario M5G 1L7, Canada
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33
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Belbekhouche S, Reinicke S, Espeel P, Du Prez FE, Eloy P, Dupont-Gillain C, Jonas AM, Demoustier-Champagne S, Glinel K. Polythiolactone-based redox-responsive layers for the reversible release of functional molecules. ACS APPLIED MATERIALS & INTERFACES 2014; 6:22457-22466. [PMID: 25437253 DOI: 10.1021/am506489j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The development of thin macromolecular layers with incorporated disulfide bonds that can be disrupted and formed again under redox stimulation is of general interest for drug release applications, because such layers can provide rapid and reversible responses to specific biological systems and signals. However, the preparation of such layers from polythiols remains difficult, because of the fast oxidation of thiol groups in ambient conditions. Here we propose water-soluble thiolactone-containing copolymers as stable precursors containing protected thiol groups, allowing us to produce on demand polythiol layers on gold substrates in the presence of amine derivatives. Electrochemical, water contact angle, X-ray photoelectron spectroscopy, and X-ray reflectometry measurements evidence the formation of uniform copolymer layers containing both anchored and free thiol groups. The number of free thiols increases with the content of thiolactone units in the copolymers. In a second step, a thiolated dye, used as a model drug, was successfully grafted on the free thiol groups through disulfide bonds using mild oxidizing conditions, as proved by fluorescence and quartz crystal microbalance measurements. Finally, the reversible release/regrafting of the dye under redox stimulation is demonstrated.
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Affiliation(s)
- Sabrina Belbekhouche
- Institute of Condensed Matter & Nanosciences (Bio & Soft Matter), Université catholique de Louvain , Croix du Sud 1, box L7.04.01, B-1348 Louvain-La-Neuve, Belgium
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34
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Miura S, Suzuki H, Bae YH. A Multilayered Cell Culture Model for Transport Study in Solid Tumors: Evaluation of Tissue Penetration of Polyethyleneimine Based Cationic Micelles. NANO TODAY 2014; 9:695-704. [PMID: 25866552 PMCID: PMC4387546 DOI: 10.1016/j.nantod.2014.10.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Limited drug distribution is partially responsible for the efficacy gap between preclinical and clinical studies of nano-sized drug carriers for cancer therapy. In this study, we examined the transport behavior of cationic micelles formed from a triblock copolymer of poly(D,L-lactide-co-glycolide)-block-branched polyethyleneimine-block-poly(D,L-lactide-co-glycolide) using a unique in vitro tumor model composed of a multilayered cell culture (MCC) and an Ussing chamber system. The Cy3-labeled cationic micelles showed remarkable Cy3 distribution in the MCC whereas charge-shielded micelles with a poly(ethylene glycol) surface accumulated on the surface of the MCC. Penetration occurred against convectional flow caused by a hydraulic pressure gradient. The study using fluorescence resonance energy transfer (FRET) showed that the cationic micelles dissociate at the interface between the culture media and the MCC or possibly inside of the first-layer cells and penetrates into the MCC as unimers. The penetration and distribution were energy-dependent and suppressed by various endocytic inhibitors. These suggest that cationic unimers mainly utilized clathrin-mediated endocytosis and macropinocytosis for cellular entry and a significant fraction were exocytosed by an unknown mechanism.
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Affiliation(s)
- Seiji Miura
- Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, 30 S 2000 E, Salt Lake City, UT 84112, United States
- Fuji Research Laboratories, Pharmaceutical Division, Kowa Co. Ltd., 332–1 Ohnoshinden, Fuji, Shizuoka, Japan
| | - Hidenori Suzuki
- Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, 30 S 2000 E, Salt Lake City, UT 84112, United States
- Fuji Research Laboratories, Pharmaceutical Division, Kowa Co. Ltd., 332–1 Ohnoshinden, Fuji, Shizuoka, Japan
| | - You Han Bae
- Department of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, University of Utah, 30 S 2000 E, Salt Lake City, UT 84112, United States
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35
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Zhang X, Liu K, Huang Y, Xu J, Li J, Ma X, Li S. Reduction-sensitive dual functional nanomicelles for improved delivery of paclitaxel. Bioconjug Chem 2014; 25:1689-96. [PMID: 25121577 PMCID: PMC4166038 DOI: 10.1021/bc500292j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
![]()
We
have developed a dual-functional nanocarrier composed of a hydrophilic
polyethylene glycol (PEG) and a hydrophobic farnesylthiosalicylate
(FTS, a nontoxic Ras antagonist), which is effective in delivery of
hydrophobic anticancer drug, paclitaxel (PTX). To facilitate the retention
of the therapeutic activity of the carrier, FTS was coupled to PEG
via a reduction-sensitive disulfide linkage (PEG5k-S-S-FTS2). PEG5k-S-S-FTS2 conjugate formed uniform
micelles with very small size (∼30 nm) and the hydrophobic
drug PTX could be readily incorporated into the micelles. Interestingly,
inclusion of a disulfide linkage into the PEG5k-FTS2 micellar system resulted in a 4-fold decrease in the critical
micelle concentration (CMC). In addition, the PTX loading capacity
and colloidal stability of PTX-loaded micelles were improved. HPLC-MS
showed that parent FTS could be more effectively released from PEG5k-S-S-FTS2 conjugate in tumor cells/tissues compared
to PEG5k-FTS2 conjugate in vitro and in vivo. PEG5k-S-S-FTS2 exhibited a higher level of cytotoxicity toward tumor cells than
PEG5k-FTS2 without a disulfide linkage. Furthermore,
PTX-loaded PEG5k-S-S-FTS2 micelles were more
effective in inhibiting the proliferation of cultured tumor cells
compared to Taxol and PTX loaded in PEG5k-FTS2 micelles. More importantly, PTX-loaded PEG5k-S-S-FTS2 micelles demonstrated superior antitumor activity compared
to Taxol and PTX formulated in PEG5k-FTS2 micelles
in an aggressive murine breast cancer model (4T1.2).
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Affiliation(s)
- Xiaolan Zhang
- Center for Pharmacogenetics, ‡Department of Pharmaceutical Sciences, School of Pharmacy; §University of Pittsburgh Cancer Institute, University of Pittsburgh , Pittsburgh, Pennsylvania 15261, United States
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36
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Swaminathan S, Fowley C, McCaughan B, Cusido J, Callan JF, Raymo FM. Intracellular Guest Exchange between Dynamic Supramolecular Hosts. J Am Chem Soc 2014; 136:7907-13. [DOI: 10.1021/ja500285p] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Subramani Swaminathan
- Laboratory for Molecular Photonics, Department
of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Colin Fowley
- School
of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, BT52 1SA Northern Ireland, United Kingdom
| | - Bridgeen McCaughan
- School
of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, BT52 1SA Northern Ireland, United Kingdom
| | - Janet Cusido
- Laboratory for Molecular Photonics, Department
of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - John F. Callan
- School
of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, BT52 1SA Northern Ireland, United Kingdom
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics, Department
of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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