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Kari OK, Tavakoli S, Parkkila P, Baan S, Savolainen R, Ruoslahti T, Johansson NG, Ndika J, Alenius H, Viitala T, Urtti A, Lajunen T. Light-Activated Liposomes Coated with Hyaluronic Acid as a Potential Drug Delivery System. Pharmaceutics 2020; 12:E763. [PMID: 32806740 PMCID: PMC7465487 DOI: 10.3390/pharmaceutics12080763] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/05/2020] [Accepted: 08/09/2020] [Indexed: 01/22/2023] Open
Abstract
Light-activated liposomes permit site and time-specific drug delivery to ocular and systemic targets. We combined a light activation technology based on indocyanine green with a hyaluronic acid (HA) coating by synthesizing HA-lipid conjugates. HA is an endogenous vitreal polysaccharide and a potential targeting moiety to cluster of differentiation 44 (CD44)-expressing cells. Light-activated drug release from 100 nm HA-coated liposomes was functional in buffer, plasma, and vitreous samples. The HA-coating improved stability in plasma compared to polyethylene glycol (PEG)-coated liposomes. Liposomal protein coronas on HA- and PEG-coated liposomes after dynamic exposure to undiluted human plasma and porcine vitreous samples were hydrophilic and negatively charged, thicker in plasma (~5 nm hard, ~10 nm soft coronas) than in vitreous (~2 nm hard, ~3 nm soft coronas) samples. Their compositions were dependent on liposome formulation and surface charge in plasma but not in vitreous samples. Compared to the PEG coating, the HA-coated liposomes bound more proteins in vitreous samples and enriched proteins related to collagen interactions, possibly explaining their slightly reduced vitreal mobility. The properties of the most abundant proteins did not correlate with liposome size or charge, but included proteins with surfactant and immune system functions in plasma and vitreous samples. The HA-coated light-activated liposomes are a functional and promising alternative for intravenous and ocular drug delivery.
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Affiliation(s)
- Otto K. Kari
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
| | - Shirin Tavakoli
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
| | - Petteri Parkkila
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
| | - Simone Baan
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
- Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P.O. Box 80.082, 3508 TB Utrecht, The Netherlands
| | - Roosa Savolainen
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
| | - Teemu Ruoslahti
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
| | - Niklas G. Johansson
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland;
| | - Joseph Ndika
- Human Microbiome Research, Faculty of Medicine, University of Helsinki, Haartmaninkatu 3, FI-00290 Helsinki, Finland; (J.N.); (H.A.)
| | - Harri Alenius
- Human Microbiome Research, Faculty of Medicine, University of Helsinki, Haartmaninkatu 3, FI-00290 Helsinki, Finland; (J.N.); (H.A.)
- Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Tapani Viitala
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland;
| | - Arto Urtti
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1, 70210 Kuopio, Finland
- Institute of Chemistry, St. Petersburg State University, Petergof, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Tatu Lajunen
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00790 Helsinki, Finland; (O.K.K.); (S.T.); (P.P.); (S.B.); (R.S.); (T.R.); (T.V.); (A.U.)
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutical Science, Tokyo University of Pharmacy & Life Sciences, 1432-1 Hachioji, Tokyo 192-0392, Japan
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52
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Ilochonwu BC, Urtti A, Hennink WE, Vermonden T. Intravitreal hydrogels for sustained release of therapeutic proteins. J Control Release 2020; 326:419-441. [PMID: 32717302 DOI: 10.1016/j.jconrel.2020.07.031] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 12/11/2022]
Abstract
This review highlights how hydrogel formulations can improve intravitreal protein delivery to the posterior segment of the eye in order to increase therapeutic outcome and patient compliance. Several therapeutic proteins have shown excellent clinical successes for the treatment of various intraocular diseases. However, drug delivery to the posterior segment of the eye faces significant challenges due to multiple physiological barriers preventing drugs from reaching the retina, among which intravitreal protein instability and rapid clearance from the site of injection. Hence, frequent injections are required to maintain therapeutic levels. Moreover, because the world population ages, the number of patients suffering from ocular diseases, such as age-related macular degeneration (AMD) and diabetic retinopathy (DR) is increasing and causing increased health care costs. Therefore, there is a growing need for suitable delivery systems able to tackle the current limitations in retinal protein delivery, which also may reduce costs. Hydrogels have shown to be promising delivery systems capable of sustaining release of therapeutic proteins and thus extending their local presence. Here, an extensive overview of preclinically developed intravitreal hydrogels is provided with attention to the rational design of clinically useful intravitreal systems. The currently used polymers, crosslinking mechanisms, in vitro/in vivo models and advancements are discussed together with the limitations and future perspective of these biomaterials.
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Affiliation(s)
- Blessing C Ilochonwu
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Arto Urtti
- Centre for Drug Research, Division of Pharmaceutical Biosciences, University of Helsinki, Helsinki, Finland; School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Wim E Hennink
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
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53
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Wu Z, Chen Y, Mukasa D, Pak OS, Gao W. Medical micro/nanorobots in complex media. Chem Soc Rev 2020; 49:8088-8112. [PMID: 32596700 DOI: 10.1039/d0cs00309c] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Medical micro/nanorobots have received tremendous attention over the past decades owing to their potential to be navigated into hard-to-reach tissues for a number of biomedical applications ranging from targeted drug/gene delivery, bio-isolation, detoxification, to nanosurgery. Despite the great promise, the majority of the past demonstrations are primarily under benchtop or in vitro conditions. Many developed micro/nanoscale propulsion mechanisms are based on the assumption of a homogeneous, Newtonian environment, while realistic biological environments are substantially more complex. Moving toward practical medical use, the field of micro/nanorobotics must overcome several major challenges including propulsion through complex media (such as blood, mucus, and vitreous) as well as deep tissue imaging and control in vivo. In this review article, we summarize the recent research efforts on investigating how various complexities in biological environments impact the propulsion of micro/nanoswimmers. We also highlight the emerging technological approaches to enhance the locomotion of micro/nanorobots in complex environments. The recent demonstrations of in vivo imaging, control and therapeutic medical applications of such micro/nanorobots are introduced. We envision that continuing materials and technological innovations through interdisciplinary collaborative efforts can bring us steps closer to the fantasy of "swallowing a surgeon".
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Affiliation(s)
- Zhiguang Wu
- Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, USA.
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Zeng Y, Boyd R, Bartoe J, Wiley HE, Marangoni D, Wei LL, Sieving PA. "Para-retinal" Vector Administration into the Deep Vitreous Enhances Retinal Transgene Expression. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 18:422-427. [PMID: 32695844 PMCID: PMC7363691 DOI: 10.1016/j.omtm.2020.06.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/18/2020] [Indexed: 01/22/2023]
Abstract
Intravitreal administration for human adeno-associated vector (AAV) delivery is easier and less traumatic to ocular tissues than subretinal injection, but it gives limited retinal transduction. AAV vectors are large (about 4,000 kDa) compared with most intraocular drugs, such as ranibizumab (48 kDa), and the large size impedes diffusion to reach the retina from the usual injection site in the anterior/mid-vitreous. Intuitively, a preferred placement for the vector would be deep in the vitreous near the retina, which we term “para-retinal” delivery. We explored the consequences of para-retinal intravitreal delivery in the rabbit eye and in non-human primate (NHP) eye. 1 h after para-retinal administration in the rabbit eye, the vector concentration near the retina remained four times greater than in the anterior vitreous, indicating limited vector diffusion through the gelatinous vitreous matrix. In NHP, para-retinal placement showed greater transduction in the fovea than vector applied in the mid-vitreous. More efficient retinal delivery translates to using lower vector doses, with reduced risk of ocular inflammatory exposure. These results indicate that para-retinal delivery yields more effective vector concentration near the retina, thereby increasing the potential for better retinal transduction in human clinical application.
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Affiliation(s)
- Yong Zeng
- National Eye Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ryan Boyd
- Charles River Laboratories, Matawan, MI, USA
| | | | - Henry E Wiley
- National Eye Institute, National Institutes of Health, Bethesda, MD, USA
| | - Dario Marangoni
- National Eye Institute, National Institutes of Health, Bethesda, MD, USA.,Department of Ophthalmology, University of Pennsylvania, Philadelphia, PA, USA
| | - Lisa L Wei
- National Eye Institute, National Institutes of Health, Bethesda, MD, USA
| | - Paul A Sieving
- National Eye Institute, National Institutes of Health, Bethesda, MD, USA.,Center for Ocular Regenerative Therapy; Department of Ophthalmology, University of California at Davis, Sacramento, CA, USA
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55
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Young CC, Vedadghavami A, Bajpayee AG. Bioelectricity for Drug Delivery: The Promise of Cationic Therapeutics. Bioelectricity 2020; 2:68-81. [PMID: 32803148 DOI: 10.1089/bioe.2020.0012] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Biological systems overwhelmingly comprise charged entities generating electrical activity that can have significant impact on biological structure and function. This intrinsic bio-electrical activity can also be harnessed for overcoming the tissue matrix and cell membrane barriers, which have been outstanding challenges for targeted drug delivery, by using rationally designed cationic carriers. The weak and reversible long-range electrostatic interactions with fixed negatively charged groups facilitate electro-diffusive transport of cationic therapeutics through full-tissue thickness to effectively reach intra-tissue, cellular, and intracellular target sites. This article presents a perspective on the promise of using rationally designed cationic biomaterials in targeted drug delivery, the underlying charge-based mechanisms, and bio-transport phenomena while addressing outstanding concerns around toxicity and methods to mitigate them. We also discuss electrically charged drugs that are currently being evaluated in clinical trials and identify areas of further development that have the potential to usher in new treatments.
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Affiliation(s)
- Cameron C Young
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, USA
| | - Armin Vedadghavami
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Ambika G Bajpayee
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA.,Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts, USA
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56
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Kim HM, Ha S, Hong HK, Hwang Y, Kim P, Yang E, Chung JY, Park S, Park YJ, Park KH, Kim H, Woo SJ. Intraocular Distribution and Kinetics of Intravitreally Injected Antibodies and Nanoparticles in Rabbit Eyes. Transl Vis Sci Technol 2020; 9:20. [PMID: 32821517 PMCID: PMC7409074 DOI: 10.1167/tvst.9.6.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose To investigate the intraocular distribution and kinetics of antibodies and nanoparticles in the experimental model. Methods Antibodies (whole IgG 149kDa, antigen-binding fragments 48.39 kDa) and four kinds of nondegradable nanoparticles (25, 50, 200, and 250 nm) were intravitreally injected in the right eye of New Zealand white rabbits. The average optical density and concentration were used to measure intraocular distribution and kinetics. Results After intravitreal injection, antibodies were distributed throughout the vitreous humor and eliminated gradually into anterior and posterior routes. Fluorescence intensity decreased 1 day after injection and was not detected 25 days after injection. The nondegradable nanoparticles migrated posteriorly to the retina 7 days after injection onward and anteriorly to the aqueous humor from 1 hour to 1 day after injection. The fluorescence intensity of the nanoparticles was relatively stable in the vitreous humor, compared to antibodies. Nanoparticles accumulated on the internal limiting membrane of the retina with no penetration into deeper retinal tissue, whereas the smaller size 25 nm nanoparticles passed across the ciliary body and moved into choroid, retina, and suprachoroidal space. A gradual decrease of nanoparticles by their sizes in the vitreous after 30 days after injection was described as the percentage ratio: 61.1% (25 nm), 69.1% (50 nm), 78.6% (200nm), and 85.3% (250 nm). Conclusions Our study revealed the in vivo intraocular distribution and kinetics of antibodies and nanoparticles with diverse sizes and the result might help to develop newer intraocular drugs and drug delivery systems to treat retinal diseases. Translational Relevance These experimental results can be valuable data for human research.
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Affiliation(s)
- Hyeong Min Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | | | - Hye Kyoung Hong
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Yoonha Hwang
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Eunsol Yang
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Bundang Hospital, Seongnam, Republic of Korea
| | - Jae Yong Chung
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Bundang Hospital, Seongnam, Republic of Korea
| | - Sunyoung Park
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Young Joo Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyuncheol Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Schiller JL, Lai SK. Tuning Barrier Properties of Biological Hydrogels. ACS APPLIED BIO MATERIALS 2020; 3:2875-2890. [DOI: 10.1021/acsabm.0c00187] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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58
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Oguchi Y, Sekiryu T, Omori T, Kato Y, Ogasawara M, Sugano Y, Itagaki K, Ojima A, Machida T, Sekine H. Anaphylatoxin concentration in aqueous and vitreous humor in the eyes with vitreoretinal interface abnormalities. Exp Eye Res 2020; 195:108025. [PMID: 32224205 DOI: 10.1016/j.exer.2020.108025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/06/2020] [Accepted: 03/24/2020] [Indexed: 10/24/2022]
Abstract
The complement system may be activated in the posterior segment of the eye with chorioretinal disease, which may be reflected to the concentration of anaphylatoxins in the aqueous humor. Little is known about the distribution of anaphylatoxins in the aqueous and vitreous humor. The aim of the present study was to investigate the distribution of anaphylatoxin concentration in the aqueous and vitreous humor of the eyes with idiopathic epiretinal membrane or idiopathic macular hole. This was an experimental, observational case series. This study included 43 eyes from 43 patients; 29 eyes with idiopathic epiretinal membrane, and 14 eyes with idiopathic macular hole. All 43 eyes underwent cataract surgery and vitrectomy. The aqueous and vitreous humor were collected at the surgery. The anaphylatoxin concentrations were measured by using a cytometric beads array, and the respective C3a, C4a, and C5a concentrations were 2.003 ± 0.679 (mean ± standard deviation) ng/ml, 1.389 ± 0.419 ng/ml, and 0.003 ± 0.004 ng/ml in the aqueous humor, and 1.236 ± 0.642 ng/ml, 1.250 ± 0.542 ng/ml, and 0.048 ± 0.069 ng/ml in the vitreous humor. The mean C3a concentration in the aqueous humor was significantly higher than in the vitreous humor in 43 eyes of iMH and iERM (P < 0.001). The mean C4a concentration showed no significant difference between the aqueous humor and vitreous humor (P = 0.282), and the mean C5a in the aqueous humor was significantly lower than in the vitreous humor overall (P < 0.001). The C3a concentration in the aqueous humor strongly correlated with that in the vitreous humor (R = 0.510, P < 0.001). The concentrations of C4a and C5a in the aqueous humor moderately correlated with those in the vitreous humor (C4a; R = 0.356, P = 0.019, C5a; R = 0.464, P = 0.022). In conclusion, the anaphylatoxin concentrations measured by cytometric beads array in the aqueous humor may be associated with those measured in the vitreous humor.
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Affiliation(s)
- Yasuharu Oguchi
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Tetsuju Sekiryu
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan.
| | - Tomoko Omori
- Department of Immunology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Yutaka Kato
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Masashi Ogasawara
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Yukinori Sugano
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Kanako Itagaki
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Akira Ojima
- Department of Ophthalmology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Takeshi Machida
- Department of Immunology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Hideharu Sekine
- Department of Immunology, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
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Varela-Fernández R, Díaz-Tomé V, Luaces-Rodríguez A, Conde-Penedo A, García-Otero X, Luzardo-Álvarez A, Fernández-Ferreiro A, Otero-Espinar FJ. Drug Delivery to the Posterior Segment of the Eye: Biopharmaceutic and Pharmacokinetic Considerations. Pharmaceutics 2020; 12:E269. [PMID: 32188045 PMCID: PMC7151081 DOI: 10.3390/pharmaceutics12030269] [Citation(s) in RCA: 171] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/06/2020] [Accepted: 03/11/2020] [Indexed: 01/22/2023] Open
Abstract
The treatment of the posterior-segment ocular diseases, such as age-related eye diseases (AMD) or diabetic retinopathy (DR), present a challenge for ophthalmologists due to the complex anatomy and physiology of the eye. This specialized organ is composed of various static and dynamic barriers that restrict drug delivery into the target site of action. Despite numerous efforts, effective intraocular drug delivery remains unresolved and, therefore, it is highly desirable to improve the current treatments of diseases affecting the posterior cavity. This review article gives an overview of pharmacokinetic and biopharmaceutics aspects for the most commonly-used ocular administration routes (intravitreal, topical, systemic, and periocular), including information of the absorption, distribution, and elimination, as well as the benefits and limitations of each one. This article also encompasses different conventional and novel drug delivery systems designed and developed to improve drug pharmacokinetics intended for the posterior ocular segment treatment.
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Affiliation(s)
- Rubén Varela-Fernández
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Clinical Neurosciences Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Victoria Díaz-Tomé
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Andrea Luaces-Rodríguez
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Andrea Conde-Penedo
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Paraquasil Group, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Xurxo García-Otero
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Molecular Imaging Group. University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Asteria Luzardo-Álvarez
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Paraquasil Group, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Anxo Fernández-Ferreiro
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
| | - Francisco J. Otero-Espinar
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela (USC), Campus vida, 15782 Santiago de Compostela, Spain; (R.V.-F.); (V.D.-T.); (A.L.-R.); (A.C.-P.); (X.G.-O.); (A.L.-Á.)
- Paraquasil Group, Health Research Institute of Santiago de Compostela (IDIS), Travesía da Choupana s/n, 15706 Santiago de Compostela, Spain
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Smith DW, Lee CJ, Gardiner BS. No flow through the vitreous humor: How strong is the evidence? Prog Retin Eye Res 2020; 78:100845. [PMID: 32035123 DOI: 10.1016/j.preteyeres.2020.100845] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 02/06/2023]
Abstract
When analyzing vitreal drug delivery, or the pharmacological effects of drugs on intraocular pressure, or when interpreting outflow facility measurements, it is generally accepted that the fluid in the vitreous humor is stagnant. It is accepted that for all practical purposes, the aqueous fluid exits the eye via anterior pathways only, and so there is negligible if any posteriorly directed flow of aqueous through the vitreous humor. This assumption is largely based on the interpretation of experimental data from key sources including Maurice (1957), Moseley (1984), Gaul and Brubaker (1986), Maurice (1987) and Araie et al. (1991). However, there is strong independent evidence suggesting there is a substantial fluid flow across the retinal pigment epithelium from key sources including Cantrill and Pederson (1984), Chihara and Nao-i, Tsuboi (1985), Dahrouj et al. (2014), Smith and Gardiner (2017) and Smith et al. (2019). The conflicting evidence creates a conundrum-how can both interpretations be true? This leads us to re-evaluate the evidence. We demonstrate that the data believed to be supporting no aqueous flow through the vitreous are in fact compatible with a significant normal aqueous flow. We identify strong and independent lines of evidence supporting fluid flow across the RPE, including our new outflow model for the eye. On balance it appears the current evidence favors the view that there is normally a significant aqueous flow across the RPE in vivo. This finding suggests that past and future analyses of outflow facility, interpretations of some drug distributions and the interpretation of some drug effects on eye tissues, may need to be revised.
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Affiliation(s)
- David W Smith
- Faculty of Engineering and Mathematical Sciences, The University of Western Australia, Perth, Australia.
| | - Chang-Joon Lee
- Faculty of Engineering and Mathematical Sciences, The University of Western Australia, Perth, Australia; College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia, Australia
| | - Bruce S Gardiner
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia, Australia
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Thakur SS, Shenoy SK, Suk JS, Hanes JS, Rupenthal ID. Validation of hyaluronic acid-agar-based hydrogels as vitreous humor mimetics for in vitro drug and particle migration evaluations. Eur J Pharm Biopharm 2020; 148:118-125. [PMID: 31981693 DOI: 10.1016/j.ejpb.2020.01.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 12/26/2022]
Abstract
Artificial vitreous humor holds immense potential for use in in vitro intravitreal drug delivery assays. In this study, we investigated rheological properties and drug or nanoparticle migration in hyaluronic acid (HA) - agar based hydrogels and compared these characteristics with bovine vitreous humor. Gel compositions identified in literature containing HA (0.7-5.0 mg/ml) and agar (0.95-4.0 mg/ml) were classified as either high (VH), medium (VM) or low (VL) polymer load. Viscoelastic behavior was evaluated using oscillatory rheology, and migration of differently sized and charged polystyrene nanoparticles (NPs) through the different gels was determined via multiple particle tracking. Comparable rheological behaviour was observed between VL and bovine vitreous. Tracking evaluations revealed that increasing particle size and gel viscosity slowed NP migration. Additionally, 100 nm anionic NPs migrated slower than neutral NPs in VL and VM, while cationic NPs were immobile in all gels. Finally, distribution and clearance of sodium fluorescein was used to model drug mobility through the gels using a custom-built eye model. Flow and angular movement only influenced drug migration in VL and VM, but not VH. Finally, VL and VM demonstrated to have the most similar sodium fluorescein clearance to that of bovine vitreous humor. Together, these evaluations demonstrate that low viscosity HA-agar gels can be used to approximate nanoparticle and drug migration through biological vitreous humor.
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Affiliation(s)
- Sachin S Thakur
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Siddharth K Shenoy
- Center for Nanomedicine, Wilmer Eye Institute, The Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA
| | - Jung Soo Suk
- Center for Nanomedicine, Wilmer Eye Institute, The Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA; Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA
| | - Justin S Hanes
- Center for Nanomedicine, Wilmer Eye Institute, The Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA; Department of Pharmacology & Molecular Sciences, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA; Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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62
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Crowell SR, Wang K, Famili A, Shatz W, Loyet KM, Chang V, Liu Y, Prabhu S, Kamath AV, Kelley RF. Influence of Charge, Hydrophobicity, and Size on Vitreous Pharmacokinetics of Large Molecules. Transl Vis Sci Technol 2019; 8:1. [PMID: 31695962 PMCID: PMC6827426 DOI: 10.1167/tvst.8.6.1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/24/2019] [Indexed: 01/04/2023] Open
Abstract
Purpose Development of therapeutics for retinal disease with improved durability is hampered by inadequate understanding of pharmacokinetic (PK) drivers following intravitreal injection. Previous work shows that hydrodynamic radius is correlated with vitreal half-life over the range of 3 to 7 nm, and that charge and hydrophobicity influence systemic clearance. Better understanding the molecular attributes affecting vitreal elimination half-life enables improved design of therapeutics and enhances clinical translatability. Methods Impacts of charge and hydrophobicity on vitreal PK in the rabbit were systematically assessed using antibody and antibody fragment (Fab) variant series, including ranibizumab, altered through amino acid changes in hypervariable regions of the light chain. The impact of molecule size on vitreal PK was assessed in the rabbit, nonhuman primate, and human for a range of molecules (1–45 nm, net charge −1324 to +22.9 in rabbit), including published and internal data. Results No correlation was observed between vitreal PK and charge or hydrophobicity. Equivalent rabbit vitreal PK was observed for ranibizumab and its variants with isoelectric points (pI) in the range of 6.8 to 10.2, and hydrophobicities of the variable domain unit (FvHI) between 1009 and 1296; additional variant series had vitreal PK similarly unaffected by pI (5.4–10.2) and FvHI (1004–1358). Strong correlations were observed between vitreal half-life and hydrodynamic radius for preclinical species (R2 = 0.8794–0.9366). Conclusions Diffusive properties of soluble large molecules, as quantified by hydrodynamic radius, make a key contribution to vitreal elimination, whereas differences in charge or hydrophobicity make minor or negligible contributions. Translational Relevance These results support estimation of vitreal elimination rates based on molecular size in relevant preclinical species and humans.
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Affiliation(s)
- Susan R Crowell
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech, South San Francisco, CA, USA
| | - Kathryn Wang
- Drug Delivery, Genentech, South San Francisco, CA, USA
| | - Amin Famili
- Drug Delivery, Genentech, South San Francisco, CA, USA
| | - Whitney Shatz
- Protein Chemistry, Genentech, South San Francisco, CA, USA
| | - Kelly M Loyet
- Biochemical and Cellular Pharmacology, Genentech, South San Francisco, CA, USA
| | - Vincent Chang
- Bioanalytical Sciences, Genentech, South San Francisco, CA, USA
| | - Yanqiu Liu
- Bioanalytical Sciences, Genentech, South San Francisco, CA, USA
| | - Saileta Prabhu
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech, South San Francisco, CA, USA
| | - Amrita V Kamath
- Preclinical and Translational Pharmacokinetics and Pharmacodynamics, Genentech, South San Francisco, CA, USA
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63
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Wang K, Zheng M, Lester KL, Han Z. Light-induced Nrf2 -/- mice as atrophic age-related macular degeneration model and treatment with nanoceria laden injectable hydrogel. Sci Rep 2019; 9:14573. [PMID: 31601909 PMCID: PMC6787253 DOI: 10.1038/s41598-019-51151-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/25/2019] [Indexed: 12/31/2022] Open
Abstract
Elevated oxidative stress and associated reactive oxygen species (ROS) accumulation are hallmarks in the induction and progression of age-related macular degeneration (AMD). By exposing nuclear factor erythroid 2-related factor (Nrf2) knockout (Nrf2-/-) mice to mild white light, we were able to generate a new dry-AMD like murine model to the study. This animal model developed phenotypes of photoreceptor degeneration, retinal function impairment, ROS accumulation, and inflammation reaction in a relatively shorter time. In the treatment of this animal model we utilized an antioxidative and water soluble nanoparticle known as glycol chitosan coated cerium oxide nanoparticles (GCCNP). The delivery of GCCNP protected retina against progressive retinal oxidative damage. Further combination of GCCNP with alginate-gelatin based injectable hydrogel provided synergistic antioxidant effects and achieved a more rapid recovery of the retinal pigment epithelium and photoreceptor cells. This combined treatment technique has the potential to translate into a clinical intervention for the treatment of AMD.
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Affiliation(s)
- Kai Wang
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Min Zheng
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Kaitlyn Lee Lester
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Zongchao Han
- Department of Ophthalmology, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Carolina Institute for Nano Medicine, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Division of Pharmacoengineering & Molecular Pharmaceutics, Eshelman School of Pharmacy, the University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
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Sauvage F, Fraire JC, Remaut K, Sebag J, Peynshaert K, Harrington M, Van de Velde FJ, Xiong R, Tassignon MJ, Brans T, Braeckmans K, De Smedt SC. Photoablation of Human Vitreous Opacities by Light-Induced Vapor Nanobubbles. ACS NANO 2019; 13:8401-8416. [PMID: 31287662 DOI: 10.1021/acsnano.9b04050] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Myopia, diabetes, and aging are the main causes of progressive vitreous collagen aggregation, resulting in vitreous opacities, which can significantly disturb vision. As vitreous opacities, which induce the visual phenomenon of "floaters", are accessible with nanomaterials and light, we propose a nanotechnology-based approach to locally ablate them with highly reduced light energy compared to the more traditional YAG laser therapy. Our strategy relies on the plasmon properties of gold nanoparticles that generate vapor nanobubbles upon pulsed-laser illumination whose mechanical force can ablate vitreous opacities. We designed gold nanoparticles coated with hyaluronic acid (HA), which have excellent diffusional mobility in human vitreous, an essential requirement to reach the vitreous opacities. In addition, we found that HA-coated gold nanoparticles can accumulate extensively on human vitreous opacities that were obtained by vitrectomy from patients with vision-degrading myodesopsia. When subsequently applying nanosecond laser pulses, the collagen aggregates were efficiently destroyed with ∼1000 times less light energy than typically used in YAG laser therapy. This low-energy "floater-specific destruction", which is due to the accumulation of the small gold nanoparticles on the opacities, is attractive, as it may be safer to the surrounding ocular tissues while at the same time being easier and faster to apply compared to YAG laser therapy, where the opacities need to be ablated piece by piece by a tightly focused laser beam. Gold nanoparticle-assisted photoablation may therefore provide a safer, faster, and more reliable destruction of vitreous opacities in the treatment of ophthalmologic diseases.
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Affiliation(s)
- Félix Sauvage
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Juan C Fraire
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Katrien Remaut
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - J Sebag
- VMR Institute for Vitreous Macula Retina , Huntington Beach , California 92647 , United States
- Doheny Eye Institute/UCLA , Los Angeles , California 90033 , United States
| | - Karen Peynshaert
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Michael Harrington
- Huntington Medical Research Institutes , Pasadena , California 91105 , United States
| | - Frans J Van de Velde
- Schepens Eye Research Institute , Harvard Medical School , Boston , Massachusetts 02114 , United States
| | - Ranhua Xiong
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Marie-José Tassignon
- Department of Ophthalmology, Antwerp University Hospital , University of Antwerp , Antwerp 2020 , Belgium
| | - Toon Brans
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Kevin Braeckmans
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences , Ghent University , Ottergemsesteenweg 460 , Ghent 9000 , Belgium
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Hansing J, Netz RR. Particle Trapping Mechanisms Are Different in Spatially Ordered and Disordered Interacting Gels. Biophys J 2019; 114:2653-2664. [PMID: 29874615 DOI: 10.1016/j.bpj.2018.04.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/09/2018] [Accepted: 04/23/2018] [Indexed: 12/11/2022] Open
Abstract
Using stochastic simulations, we study the influence of spatial disorder on the diffusion of a single particle through a gel that consists of rigid, straight fibers. The interaction between the particle and the gel fibers consists of an invariant short-range repulsion, the steric part, and an interaction part that can be attractive or repulsive and of varying range. The effect that spatial disorder of the gel structure has on the particle diffusivity depends crucially on the presence of nonsteric interactions. For attractive interactions, disorder slows down diffusion, because in disordered gels, the particle becomes strongly trapped in regions of locally increased fiber density. For repulsive interactions, the diffusivity is minimal for intermediate disorder strength, because highly disordered lattices exhibit abundant passageways of locally low fiber density. The comparison with experimental data on protein and fluorophore diffusion through various hydrogels is favorable. Our findings shed light on particle-diffusion mechanisms in biogels and thus on biological barrier properties, which can be helpful for the optimal design of synthetic diffusors as well as synthetic mucus constructs.
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Affiliation(s)
- Johann Hansing
- Department of Physics, Freie Universität Berlin, Berlin, Germany
| | - Roland R Netz
- Department of Physics, Freie Universität Berlin, Berlin, Germany.
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Garland J, Philcox W, McCarthy S, Kesha K, Lam L, Spark A, Palmiere C, Elstub H, Cala A, Stables S, Tse R. Post-mortem biochemistry differences between vitreous humour and cerebrospinal fluid. AUST J FORENSIC SCI 2019. [DOI: 10.1080/00450618.2019.1597920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J. Garland
- Hornsby Ku-Ring-Gai Hospital, Hornsby, New South Wales, Australia
| | - W. Philcox
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Sinead McCarthy
- Department of Forensic Pathology, LabPLUS, Auckland City Hospital, Auckland, New Zealand
| | - K. Kesha
- Department of Forensic Pathology, LabPLUS, Auckland City Hospital, Auckland, New Zealand
| | - L. Lam
- Department of Biochemistry, LabPLUS, Auckland City Hospital, Auckland, New Zealand
| | - A. Spark
- Wellington Hospital Mortuary, Wellington, New Zealand
| | - C. Palmiere
- CURML, University Center of Legal Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - H. Elstub
- Department of Forensic Medicine, Newcastle, Forensic & Analytical Science Service (FASS), NSW Health Pathology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - A.D. Cala
- Department of Forensic Medicine, Newcastle, Forensic & Analytical Science Service (FASS), NSW Health Pathology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - S. Stables
- Department of Forensic Pathology, LabPLUS, Auckland City Hospital, Auckland, New Zealand
| | - R. Tse
- Department of Forensic Pathology, LabPLUS, Auckland City Hospital, Auckland, New Zealand
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Gao R, Mitra RN, Zheng M, Wang K, Dahringer JC, Han Z. Developing Nanoceria-Based pH-Dependent Cancer-Directed Drug Delivery System for Retinoblastoma. ADVANCED FUNCTIONAL MATERIALS 2018; 28:1806248. [PMID: 32699541 PMCID: PMC7375362 DOI: 10.1002/adfm.201806248] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 05/17/2023]
Abstract
Development of a single combinatorial nano-platform technology to target cancer cells has been an unprecedented reality in boosting synergistic anti-tumor activities and in reducing off-target effects. We have designed a novel anti-tumor delivery system using a chemotherapy drug and a tumor target molecule covalently linked to cerium oxide nanoparticles (nanoceria). Nanoceria have a unique redox activity in that they possess antioxidant activity at physiological pH but have an intrinsic oxidase activity at acidic pH. Our system is integrated with (1) extracellular pH responsive functionality, (2) tumor cell targetable (CXC chemokine receptor 4, CXCR4 receptor specific) antagonist, (3) reactive oxygen species (ROS) inducible nanoceria, and (4) chemotherapeutic doxorubicin (DOX). These combinatorial nanoparticles (AMD-GCCNPs-DOX) are not only sensitive to the extracellular acidic pH conditions and targeted tumor cells but can also instantaneously induce ROS and release DOX intracellularly to enhance the chemotherapeutic activity in retinoblastoma cells (WERI-Rb-1 and Y79) and in xenograft (Y79/GFP-luc grafted) and genetic p107s (Rb Lox/lox , p107 +/- , p130 -/- ) orthotopic mice models. Together we introduce a lucidly engineered combinatorial nano-construct that offers a viable and simple strategy for delivering a cocktail of therapeutics into tumor cells under acidosis, exhibiting a promising new future for clinical therapeutic opportunities.
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Affiliation(s)
- Ruijuan Gao
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Tiantan Xili, Beijing, China 100050
| | - Rajendra Narayan Mitra
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
| | - Min Zheng
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
| | - Kai Wang
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
| | - Jesse Christine Dahringer
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
| | - Zongchao Han
- Department of Ophthalmology, University of North Carolina, 2208 Marsico Hall, 125 Mason Farm Rd, Chapel Hill, NC, USA 27599
- Carolina Institute for NanoMedicine, University of North Carolina, Chapel Hill, NC, USA 27599
- Division of Pharmacoengineering & Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA 27599
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68
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Wu Z, Troll J, Jeong HH, Wei Q, Stang M, Ziemssen F, Wang Z, Dong M, Schnichels S, Qiu T, Fischer P. A swarm of slippery micropropellers penetrates the vitreous body of the eye. SCIENCE ADVANCES 2018; 4:eaat4388. [PMID: 30406201 PMCID: PMC6214640 DOI: 10.1126/sciadv.aat4388] [Citation(s) in RCA: 255] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 09/25/2018] [Indexed: 05/14/2023]
Abstract
The intravitreal delivery of therapeutic agents promises major benefits in the field of ocular medicine. Traditional delivery methods rely on the random, passive diffusion of molecules, which do not allow for the rapid delivery of a concentrated cargo to a defined region at the posterior pole of the eye. The use of particles promises targeted delivery but faces the challenge that most tissues including the vitreous have a tight macromolecular matrix that acts as a barrier and prevents its penetration. Here, we demonstrate novel intravitreal delivery microvehicles-slippery micropropellers-that can be actively propelled through the vitreous humor to reach the retina. The propulsion is achieved by helical magnetic micropropellers that have a liquid layer coating to minimize adhesion to the surrounding biopolymeric network. The submicrometer diameter of the propellers enables the penetration of the biopolymeric network and the propulsion through the porcine vitreous body of the eye over centimeter distances. Clinical optical coherence tomography is used to monitor the movement of the propellers and confirm their arrival on the retina near the optic disc. Overcoming the adhesion forces and actively navigating a swarm of micropropellers in the dense vitreous humor promise practical applications in ophthalmology.
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Affiliation(s)
- Zhiguang Wu
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Yi Kuang Jie 2, Harbin 150080, China
| | - Jonas Troll
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Hyeon-Ho Jeong
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
| | - Qiang Wei
- Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
| | - Marius Stang
- Center of Ophthalmology, University Eye Hospital Tübingen, Tübingen, Germany
| | - Focke Ziemssen
- Center of Ophthalmology, University Eye Hospital Tübingen, Tübingen, Germany
| | - Zegao Wang
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C, Denmark
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C, Denmark
| | - Sven Schnichels
- Center of Ophthalmology, University Eye Hospital Tübingen, Tübingen, Germany
| | - Tian Qiu
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
| | - Peer Fischer
- Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
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Diffusion through the ex vivo vitreal body – Bovine, porcine, and ovine models are poor surrogates for the human vitreous. Int J Pharm 2018; 550:207-215. [DOI: 10.1016/j.ijpharm.2018.07.070] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/21/2022]
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Hansing J, Netz RR. Hydrodynamic Effects on Particle Diffusion in Polymeric Hydrogels with Steric and Electrostatic Particle–Gel Interactions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01494] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Johann Hansing
- Fachbereich für Physik, Freie Universität Berlin, 14195 Berlin, Germany
| | - Roland R. Netz
- Fachbereich für Physik, Freie Universität Berlin, 14195 Berlin, Germany
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71
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Behroozi F, Abdkhodaie MJ, Abandansari HS, Satarian L, Ashtiani MK, Jaafari MR, Baharvand H. Smart liposomal drug delivery for treatment of oxidative stress model in human embryonic stem cell-derived retinal pigment epithelial cells. Int J Pharm 2018; 548:62-72. [PMID: 29802900 DOI: 10.1016/j.ijpharm.2018.05.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 04/18/2018] [Accepted: 05/15/2018] [Indexed: 01/09/2023]
Abstract
Oxidative stress has been implicated in the progression of age-related macular degeneration (AMD). Treatment with antioxidants seems to delay progression of AMD. In this study, we suggested an antioxidant delivery system based on redox-sensitive liposome composed of phospholipids and a diselenide centered alkyl chain. Dynamic light scattering assessment indicated that the liposomes had an average size of 140 nm with a polydispersity index below 0.2. The percentage of encapsulation efficiency of the liposomes was calculated by high-performance liquid chromatography. The carriers were loaded with N-acetyl cysteine as a model antioxidant drug. We demonstrated responsiveness of the nanocarrier and its efficiency in drug delivery in an oxidative stress model of human embryonic stem cell-derived retinal pigment epithelial (hESC-RPE) cells. The modeled cells treated with diselenide containing liposomes loaded with 10 mM NAC, showed a better therapeutic effect with a cell metabolic activity of 90%, which was significantly higher compared to insensitive liposomes or NAC treated groups (P < 0.05). In addition, the expression of oxidative-sensitive gene markers in diselenide containing liposomes groups were improved. Our results demonstrated fabricated smart liposomes opens new opportunity for targeted treatment of retinal degeneration.
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Affiliation(s)
- Farnaz Behroozi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Hamid Sadeghi Abandansari
- Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Leila Satarian
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mohammad Kazemi Ashtiani
- Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mahmoud Reza Jaafari
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Department of Developmental Biology, University of Science and Culture, Tehran, Iran.
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Hansing J, Duke JR, Fryman EB, DeRouchey JE, Netz RR. Particle Diffusion in Polymeric Hydrogels with Mixed Attractive and Repulsive Interactions. NANO LETTERS 2018; 18:5248-5256. [PMID: 29947212 DOI: 10.1021/acs.nanolett.8b02218] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
All biogels are heterogeneous, consisting of functional groups with different biophysical properties arrayed on spatially disordered polymer networks. Nanoparticles diffusing in such biogels experience a mixture of attractive and repulsive interactions. Here, we present experimental and theoretical studies of charged particle diffusion in gels with a random distribution of attractive and repulsive electrostatic interaction sites inside the gel. In addition to interaction disorder, we theoretically investigate the effect of spatial disorder of the polymer network. Our coarse-grained simulations reveal that attractive interactions primarily determine the diffusive behavior of the particles in systems with mixed attractive and repulsive interactions. As a consequence, charged particles of either sign are immobilized in mixed cationic/anionic gels because they are trapped near oppositely charged interaction sites, whereas neutral particles diffuse rapidly. Even small fractions of oppositely charged interaction sites lead to strong trapping of a charged particle. Translational diffusion coefficients of charged probe molecules in gels consisting of mixed cationic and anionic dextran polymers are determined by fluorescence correlation spectroscopy and quantitatively confirm our theoretical predictions.
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Affiliation(s)
- Johann Hansing
- Fachbereich für Physik , Freie Universität Berlin , 14195 Berlin , Germany
| | - Joseph R Duke
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Emily B Fryman
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Jason E DeRouchey
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Roland R Netz
- Fachbereich für Physik , Freie Universität Berlin , 14195 Berlin , Germany
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73
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Yu M, Xu L, Tian F, Su Q, Zheng N, Yang Y, Wang J, Wang A, Zhu C, Guo S, Zhang X, Gan Y, Shi X, Gao H. Rapid transport of deformation-tuned nanoparticles across biological hydrogels and cellular barriers. Nat Commun 2018; 9:2607. [PMID: 29973592 PMCID: PMC6031689 DOI: 10.1038/s41467-018-05061-3] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 04/26/2018] [Indexed: 11/14/2022] Open
Abstract
To optimally penetrate biological hydrogels such as mucus and the tumor interstitial matrix, nanoparticles (NPs) require physicochemical properties that would typically preclude cellular uptake, resulting in inefficient drug delivery. Here, we demonstrate that (poly(lactic-co-glycolic acid) (PLGA) core)-(lipid shell) NPs with moderate rigidity display enhanced diffusivity through mucus compared with some synthetic mucus penetration particles (MPPs), achieving a mucosal and tumor penetrating capability superior to that of both their soft and hard counterparts. Orally administered semi-elastic NPs efficiently overcome multiple intestinal barriers, and result in increased bioavailability of doxorubicin (Dox) (up to 8 fold) compared to Dox solution. Molecular dynamics simulations and super-resolution microscopy reveal that the semi-elastic NPs deform into ellipsoids, which enables rotation-facilitated penetration. In contrast, rigid NPs cannot deform, and overly soft NPs are impeded by interactions with the hydrogel network. Modifying particle rigidity may improve the efficacy of NP-based drugs, and can be applicable to other barriers. Penetration of the mucus and tumor interstitial matrix is an important consideration for drug delivery devices. Here, the authors report on a study into the optimization of rigidity for the transport of nanoparticles through biological hydrogels using core-shell polymer-lipid nanoparticles.
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Affiliation(s)
- Miaorong Yu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China
| | - Lu Xu
- School of Pharmacy, Shenyang Pharmaceutical University, 110016, Shenyang, China
| | - Falin Tian
- CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100190, Beijing, China
| | - Qian Su
- University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China.,CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100190, Beijing, China.,LNM, Institute of Mechanics, Chinese Academy of Sciences, 100190, Beijing, China
| | - Nan Zheng
- School of Pharmacy, Shenyang Pharmaceutical University, 110016, Shenyang, China
| | - Yiwei Yang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China
| | - Jiuling Wang
- University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China.,CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100190, Beijing, China.,LNM, Institute of Mechanics, Chinese Academy of Sciences, 100190, Beijing, China
| | - Aohua Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China
| | - Chunliu Zhu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China
| | - Shiyan Guo
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China
| | - XinXin Zhang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China
| | - Yong Gan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 201203, Shanghai, China. .,University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China.
| | - Xinghua Shi
- University of Chinese Academy of Sciences, NO.19A Yuquan Road, 100049, Beijing, China. .,CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, 100190, Beijing, China.
| | - Huajian Gao
- School of Engineering, Brown University, Providence, RI, 02912, USA.
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74
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Glycosaminoglycans from bovine eye vitreous humour and interaction with collagen type II. Glycoconj J 2018; 35:119-128. [PMID: 29305777 DOI: 10.1007/s10719-017-9808-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 11/20/2017] [Accepted: 11/24/2017] [Indexed: 10/18/2022]
Abstract
Glycosaminoglycans (GAGs) play an important role in stabilizing the gel state of eye vitreous humour. In this study, the composition of GAGs present in bovine eye vitreous was characterized through disaccharide analysis by liquid chromatography-mass spectrometry. The interaction of GAGs with collagen type II was assessed using surface plasmon resonance (SPR). The percentage of hyaluronic acid (HA), chondroitin sulfate (CS) and heparan sulfate (HS), of total GAG, were 96.2%, 3.5% and 0.3%, respectively. The disaccharide composition of CS consisted of 4S (49%), 0S (38%) 6S (12%), 2S6S (1.5%) and 2S4S (0.3%). The disaccharide composition of HS consisted of 0S (80%), NS2S (7%), NS (7%), 6S (4%), NS6S (2%), and TriS, 2S and 4S6S (each at 0.1%). The average molecular weights of CS and HS were 148 kDa and 204 kDa, respectively. SPR reveals that collagen type II binds to heparin (primarily composed of TriS) with a binding affinity (K D) of 755 nM and interacts with other GAGs, including CSB and CSE. Both bovine vitreous CS and HS interact with collagen type II, with vitreous HS showing a higher binding affinity.
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75
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Winkeljann B, Käsdorf BT, Boekhoven J, Lieleg O. Macromolecular Coating Enables Tunable Selectivity in a Porous PDMS Matrix. Macromol Biosci 2017; 18. [DOI: 10.1002/mabi.201700311] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/03/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Benjamin Winkeljann
- Department of Mechanical Engineering and Munich School of Bioengineering; Technical University of Munich; Boltzmannstraße 11 85748 Garching Germany
| | - Benjamin T. Käsdorf
- Department of Mechanical Engineering and Munich School of Bioengineering; Technical University of Munich; Boltzmannstraße 11 85748 Garching Germany
| | - Job Boekhoven
- Department of Chemistry and Institute for Advanced Study; Technical University of Munich; Lichtenbergstraße 4 85748 Garching Germany
| | - Oliver Lieleg
- Department of Mechanical Engineering and Munich School of Bioengineering; Technical University of Munich; Boltzmannstraße 11 85748 Garching Germany
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76
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Peynshaert K, Devoldere J, Forster V, Picaud S, Vanhove C, De Smedt SC, Remaut K. Toward smart design of retinal drug carriers: a novel bovine retinal explant model to study the barrier role of the vitreoretinal interface. Drug Deliv 2017; 24:1384-1394. [PMID: 28925755 PMCID: PMC8241179 DOI: 10.1080/10717544.2017.1375578] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 08/31/2017] [Indexed: 12/15/2022] Open
Abstract
Retinal gene delivery via intravitreal injection is hampered by various physiological barriers present in the eye of which the vitreoretinal (VR) interface represents the most serious hurdle. In this study, we present a retinal explant model especially designed to study the role of this interface as a barrier for the penetration of vectors into the retina. In contrast to all existing explant models, the developed model is bovine-derived and more importantly, keeps the vitreous attached to the retina at all times to guarantee an intact VR interface. After ex vivo intravitreal injection into the living retinal explant, the route of fluorescent carriers across the VR interface can be tracked. By applying two different imaging methods on this model, we discovered that the transfer through the VR barrier is size-dependent since 40 nm polystyrene particles are more easily taken up in the retina than 100 and 200 nm sized particles. In addition, we found that removing the vitreous, as commonly done for culture of conventional explants, leads to an overestimation of particle uptake, and conclude that the ultimate barrier to overcome for retinal uptake is undoubtedly the inner limiting membrane. Damaging this matrix resulted in a massive increase in particle transfer into the retina. In conclusion, we have developed a highly relevant ex vivo model that maximally mimics the human in vivo physiology which can be applied as a representative test set-up to assess the potential of promising drug delivery carriers to cross the VR interface.
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Affiliation(s)
- Karen Peynshaert
- Lab of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Joke Devoldere
- Lab of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Valérie Forster
- Institut de la Vision, INSERM, Université Paris 6, Paris, France
| | - Serge Picaud
- Institut de la Vision, INSERM, Université Paris 6, Paris, France
| | - Christian Vanhove
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Stefaan C. De Smedt
- Lab of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Katrien Remaut
- Lab of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
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77
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Witten J, Ribbeck K. The particle in the spider's web: transport through biological hydrogels. NANOSCALE 2017; 9:8080-8095. [PMID: 28580973 PMCID: PMC5841163 DOI: 10.1039/c6nr09736g] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Biological hydrogels such as mucus, extracellular matrix, biofilms, and the nuclear pore have diverse functions and compositions, but all act as selectively permeable barriers to the diffusion of particles. Each barrier has a crosslinked polymeric mesh that blocks penetration of large particles such as pathogens, nanotherapeutics, or macromolecules. These polymeric meshes also employ interactive filtering, in which affinity between solutes and the gel matrix controls permeability. Interactive filtering affects the transport of particles of all sizes including peptides, antibiotics, and nanoparticles and in many cases this filtering can be described in terms of the effects of charge and hydrophobicity. The concepts described in this review can guide strategies to exploit or overcome gel barriers, particularly for applications in diagnostics, pharmacology, biomaterials, and drug delivery.
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Affiliation(s)
- Jacob Witten
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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78
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Mixtures of hyaluronic acid and liposomes for drug delivery: Phase behavior, microstructure and mobility of liposomes. Int J Pharm 2017; 523:246-259. [DOI: 10.1016/j.ijpharm.2017.03.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/03/2017] [Accepted: 03/16/2017] [Indexed: 01/25/2023]
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79
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Eriksen AZ, Brewer J, Andresen TL, Urquhart AJ. The diffusion dynamics of PEGylated liposomes in the intact vitreous of the ex vivo porcine eye: A fluorescence correlation spectroscopy and biodistribution study. Int J Pharm 2017; 522:90-97. [PMID: 28267579 DOI: 10.1016/j.ijpharm.2017.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 02/25/2017] [Accepted: 03/01/2017] [Indexed: 01/22/2023]
Abstract
The diffusion dynamics of nanocarriers in the vitreous and the influence of nanocarrier physicochemical properties on these dynamics is an important aspect of the efficacy of intravitreal administered nanomedicines for the treatment of posterior segment eye diseases. Here we use fluorescence correlation spectroscopy (FCS) to determine liposome diffusion coefficients in the intact vitreous (DVit) of ex vivo porcine eyes using a modified Miyake-Apple technique to minimize the disruption of the vitreous fine structure. We chose to investigate whether the zeta potential of polyethylene glycol functionalized (i.e. PEGylated) liposomes altered liposome in situ diffusion dynamics in the vitreous. Non-PEGylated cationic nanocarriers have previously shown little to no diffusion in the vitreous, whilst neutral and anionic have shown diffusion. The liposomes investigated had diameters below 150nm and zeta potentials ranging from -20 to +12mV. We observed that PEGylated cationic liposomes had significantly lower DVit values (1.14μm2s-1) than PEGylated neutral and anionic liposomes (2.78 and 2.87μm2s-1). However, PEGylated cationic liposomes had a similar biodistribution profile across the vitreous to the other systems. These results show that PEGylated cationic liposomes with limited cationic charge can diffuse across the vitreous and indicate that the vitreous as a barrier to nanocarriers (Ø<500nm) is more complicated than simply an electrostatic barrier as previously suggested.
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Affiliation(s)
- Anne Z Eriksen
- Department for Micro- and Nanotechnology, Technical University of Denmark, Building 345C, 2800 Kgs. Lyngby, Denmark
| | - Jonathan Brewer
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Thomas L Andresen
- Department for Micro- and Nanotechnology, Technical University of Denmark, Building 345C, 2800 Kgs. Lyngby, Denmark
| | - Andrew J Urquhart
- Department for Micro- and Nanotechnology, Technical University of Denmark, Building 345C, 2800 Kgs. Lyngby, Denmark.
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80
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Arends F, Chaudhary H, Janmey P, Claessens MMAE, Lieleg O. Lipid Head Group Charge and Fatty Acid Configuration Dictate Liposome Mobility in Neurofilament Networks. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/09/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Fabienna Arends
- Department of Mechanical Engineering and Institute of Medical Engineering (IMETUM); Technical University of Munich; 85748 Garching Germany
| | - Himanshu Chaudhary
- Nanobiophysics group; MESA+ Institute for Nanotechnology and MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; 7500 AE Enschede The Netherlands
| | - Paul Janmey
- Institute for Medicine and Engineering; University of Pennsylvania; Philadelphia PA 19104 USA
| | - Mireille M. A. E. Claessens
- Nanobiophysics group; MESA+ Institute for Nanotechnology and MIRA Institute for Biomedical Technology and Technical Medicine; University of Twente; 7500 AE Enschede The Netherlands
| | - Oliver Lieleg
- Department of Mechanical Engineering and Institute of Medical Engineering (IMETUM); Technical University of Munich; 85748 Garching Germany
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