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Bassetto M, Reichl T, Kobylkov D, Kattnig DR, Winklhofer M, Hore PJ, Mouritsen H. Bassetto et al. reply. Nature 2024; 629:E6-E7. [PMID: 38693413 PMCID: PMC11062892 DOI: 10.1038/s41586-024-07321-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Affiliation(s)
- Marco Bassetto
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Thomas Reichl
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Dmitry Kobylkov
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
- Center for Mind/Brain Science, University of Trento, Rovereto, Italy
| | - Daniel R Kattnig
- Living Systems Institute, University of Exeter, Exeter, UK
- Department of Physics, University of Exeter, Exeter, UK
| | - Michael Winklhofer
- AG Sensory Biology of Animals, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
- Research Center for Neurosensory Sciences, University of Oldenburg, Oldenburg, Germany.
| | - P J Hore
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK.
| | - Henrik Mouritsen
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
- Research Center for Neurosensory Sciences, University of Oldenburg, Oldenburg, Germany.
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2
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Bassetto M, Kolesnikov AV, Lewandowski D, Kiser JZ, Halabi M, Einstein DE, Choi EH, Palczewski K, Kefalov VJ, Kiser PD. Dominant role for pigment epithelial CRALBP in supplying visual chromophore to photoreceptors. Cell Rep 2024; 43:114143. [PMID: 38676924 DOI: 10.1016/j.celrep.2024.114143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/22/2024] [Accepted: 04/09/2024] [Indexed: 04/29/2024] Open
Abstract
Cellular retinaldehyde-binding protein (CRALBP) supports production of 11-cis-retinaldehyde and its delivery to photoreceptors. It is found in the retinal pigment epithelium (RPE) and Müller glia (MG), but the relative functional importance of these two cellular pools is debated. Here, we report RPE- and MG-specific CRALBP knockout (KO) mice and examine their photoreceptor and visual cycle function. Bulk visual chromophore regeneration in RPE-KO mice is 15-fold slower than in controls, accounting for their delayed rod dark adaptation and protection against retinal phototoxicity, whereas MG-KO mice have normal bulk visual chromophore regeneration and retinal light damage susceptibility. Cone pigment regeneration is significantly impaired in RPE-KO mice but mildly affected in MG-KO mice, disclosing an unexpectedly strong reliance of cone photoreceptors on the RPE-based visual cycle. These data reveal a dominant role for RPE-CRALBP in supporting rod and cone function and highlight the importance of RPE cell targeting for CRALBP gene therapies.
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Affiliation(s)
- Marco Bassetto
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Research Service, Tibor Rubin VA Long Beach Medical Center, Long Beach, CA 90822, USA; Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Alexander V Kolesnikov
- Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Dominik Lewandowski
- Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Jianying Z Kiser
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Maximilian Halabi
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA
| | - David E Einstein
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Research Service, Tibor Rubin VA Long Beach Medical Center, Long Beach, CA 90822, USA
| | - Elliot H Choi
- Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Krzysztof Palczewski
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA; Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA; Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA 92697, USA
| | - Vladimir J Kefalov
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA
| | - Philip D Kiser
- Department of Physiology & Biophysics, University of California Irvine, Irvine, CA 92697, USA; Research Service, Tibor Rubin VA Long Beach Medical Center, Long Beach, CA 90822, USA; Center for Translational Vision Research, Gavin Herbert Eye Institute, Department of Ophthalmology, University of California Irvine, Irvine, CA 92697, USA; Department of Clinical Pharmacy Practice, University of California Irvine, Irvine, CA 92697, USA.
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Lewandowski D, Gao F, Imanishi S, Tworak A, Bassetto M, Dong Z, Pinto AFM, Tabaka M, Kiser PD, Imanishi Y, Skowronska-Krawczyk D, Palczewski K. Restoring retinal polyunsaturated fatty acid balance and retina function by targeting ceramide in AdipoR1 deficient mice. J Biol Chem 2024:107291. [PMID: 38636661 DOI: 10.1016/j.jbc.2024.107291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/30/2024] [Accepted: 04/09/2024] [Indexed: 04/20/2024] Open
Abstract
Mutations in the adiponectin receptor 1 gene (AdipoR1) lead to retinitis pigmentosa and are associated with age-related macular degeneration (AMD). This study explores the effects of AdipoR1 gene deficiency in mice, revealing a striking decline in ω3 polyunsaturated fatty acids (PUFA), an increase in ω6 FAs, and elevated ceramides in the retina. The AdipoR1 deficiency impairs peroxisome proliferator-activated receptor α (PPARα) signaling, which is crucial for FA metabolism, particularly affecting proteins associated with FA transport and oxidation in the retina and retinal pigmented epithelium (RPE). Our lipidomic and proteomic analyses indicate changes that could affect membrane composition and viscosity through altered ω3 PUFA transport and synthesis, suggesting a potential influence of AdipoR1 on these properties. Furthermore, we noted a reduction in the Bardet-Biedl syndrome (BBS) proteins, which are crucial for forming and maintaining photoreceptor outer segments that are PUFA-enriched ciliary structures. Diminution in BBS-proteins content combined with our electron microscopic observations raises the possibility that AdipoR1 deficiency might impair ciliary function. Treatment with inhibitors of ceramide synthesis led to substantial elevation of ω3 LC-PUFAs, alleviating photoreceptor degeneration and improving retinal function. These results serve as the proof of concept for a ceramide-targeted strategy to treat retinopathies linked to PUFA deficiency, including AMD.
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Affiliation(s)
- Dominik Lewandowski
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA.
| | - Fangyuan Gao
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA
| | - Sanae Imanishi
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN 46202; Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202
| | - Aleksander Tworak
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA
| | - Marco Bassetto
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | - Zhiqian Dong
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA
| | - Antonio F M Pinto
- Clayton Foundation Laboratories for Peptide Biology, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Marcin Tabaka
- International Centre for Translational Eye Research, 01-230 Warsaw, Poland; Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Philip D Kiser
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA; Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA; Department of Clinical Pharmacy Practice, University of California, Irvine, CA 92697; Research Service, Veterans Affairs Long Beach Healthcare System, Long Beach, CA, 90822
| | - Yoshikazu Imanishi
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN 46202; Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202
| | - Dorota Skowronska-Krawczyk
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA; Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | - Krzysztof Palczewski
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California, Irvine, CA 92697, USA; Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA; Department of Chemistry, and Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697, USA.
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Bassetto M, Reichl T, Kobylkov D, Kattnig DR, Winklhofer M, Hore PJ, Mouritsen H. No evidence for magnetic field effects on the behaviour of Drosophila. Nature 2023; 620:595-599. [PMID: 37558871 PMCID: PMC10432270 DOI: 10.1038/s41586-023-06397-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 07/03/2023] [Indexed: 08/11/2023]
Abstract
Migratory songbirds have the remarkable ability to extract directional information from the Earth's magnetic field1,2. The exact mechanism of this light-dependent magnetic compass sense, however, is not fully understood. The most promising hypothesis focuses on the quantum spin dynamics of transient radical pairs formed in cryptochrome proteins in the retina3-5. Frustratingly, much of the supporting evidence for this theory is circumstantial, largely because of the extreme challenges posed by genetic modification of wild birds. Drosophila has therefore been recruited as a model organism, and several influential reports of cryptochrome-mediated magnetic field effects on fly behaviour have been widely interpreted as support for a radical pair-based mechanism in birds6-23. Here we report the results of an extensive study testing magnetic field effects on 97,658 flies moving in a two-arm maze and on 10,960 flies performing the spontaneous escape behaviour known as negative geotaxis. Under meticulously controlled conditions and with vast sample sizes, we have been unable to find evidence for magnetically sensitive behaviour in Drosophila. Moreover, after reassessment of the statistical approaches and sample sizes used in the studies that we tried to replicate, we suggest that many-if not all-of the original results were false positives. Our findings therefore cast considerable doubt on the existence of magnetic sensing in Drosophila and thus strongly suggest that night-migratory songbirds remain the organism of choice for elucidating the mechanism of light-dependent magnetoreception.
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Affiliation(s)
- Marco Bassetto
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Thomas Reichl
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany
| | - Dmitry Kobylkov
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany
- Center for Mind/Brain Science, University of Trento, Rovereto, Italy
| | - Daniel R Kattnig
- Living Systems Institute, University of Exeter, Exeter, UK
- Department of Physics, University of Exeter, Exeter, UK
| | - Michael Winklhofer
- AG Sensory Biology of Animals, Institut für Biologie und Umweltwissenschaften, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany
- Research Center for Neurosensory Sciences, University of Oldenburg, Oldenburg, Germany
| | - P J Hore
- Physical & Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, UK.
| | - Henrik Mouritsen
- AG Neurosensory Sciences/Animal Navigation, Institut für Biologie und Umweltwissenschaften, Carl-von-Ossietzky Universität Oldenburg, Oldenburg, Germany.
- Research Center for Neurosensory Sciences, University of Oldenburg, Oldenburg, Germany.
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Bassetto M, Zaluski J, Li B, Zhang J, Badiee M, Kiser PD, Tochtrop GP. Tuning the Metabolic Stability of Visual Cycle Modulators through Modification of an RPE65 Recognition Motif. J Med Chem 2023; 66:8140-8158. [PMID: 37279401 PMCID: PMC10824489 DOI: 10.1021/acs.jmedchem.3c00461] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the eye, the isomerization of all-trans-retinal to 11-cis-retinal is accomplished by a metabolic pathway termed the visual cycle that is critical for vision. RPE65 is the essential trans-cis isomerase of this pathway. Emixustat, a retinoid-mimetic RPE65 inhibitor, was developed as a therapeutic visual cycle modulator and used for the treatment of retinopathies. However, pharmacokinetic liabilities limit its further development including: (1) metabolic deamination of the γ-amino-α-aryl alcohol, which mediates targeted RPE65 inhibition, and (2) unwanted long-lasting RPE65 inhibition. We sought to address these issues by more broadly defining the structure-activity relationships of the RPE65 recognition motif via the synthesis of a family of novel derivatives, which were tested in vitro and in vivo for RPE65 inhibition. We identified a potent secondary amine derivative with resistance to deamination and preserved RPE65 inhibitory activity. Our data provide insights into activity-preserving modifications of the emixustat molecule that can be employed to tune its pharmacological properties.
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Affiliation(s)
- Marco Bassetto
- Department of Physiology and Biophysics, School of Medicine, University of California - Irvine, Irvine, California 92697, United States
- Department of Ophthalmology, Gavin Herbert Eye Institute, Center for Translational Vision Research, School of Medicine, University of California - Irvine, Irvine, California 92697, United States
- Research Service, VA Long Beach Healthcare System, Long Beach, California 90822, United States
| | - Jordan Zaluski
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Bowen Li
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jianye Zhang
- Department of Ophthalmology, Gavin Herbert Eye Institute, Center for Translational Vision Research, School of Medicine, University of California - Irvine, Irvine, California 92697, United States
| | - Mohsen Badiee
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Philip D Kiser
- Department of Physiology and Biophysics, School of Medicine, University of California - Irvine, Irvine, California 92697, United States
- Department of Ophthalmology, Gavin Herbert Eye Institute, Center for Translational Vision Research, School of Medicine, University of California - Irvine, Irvine, California 92697, United States
- Department of Clinical Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University of California - Irvine, Irvine, California 92697, United States
- Research Service, VA Long Beach Healthcare System, Long Beach, California 90822, United States
| | - Gregory P Tochtrop
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Bassetto M, Sen M, Poulhes F, Arango-Gonzalez B, Ueffing M, Zelphati O. Method for siRNA delivery in retina explants. Methods Cell Biol 2023; 176:199-216. [PMID: 37164538 DOI: 10.1016/bs.mcb.2022.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Several barriers prevent the delivery of nucleic acids to the retina and limit the application of established technologies, such as RNA interference (RNAi), in the study of retinae biology. Organotypic culture of retinal explants is a convenient method to decrease the complexity of the biological environment surrounding the retina while preserving most of its physiological features. Nevertheless, eliciting significant, non-toxic RNAi in retina explants is not straightforward. Retina explants are mainly constituted by neurons organized in discrete circuits embedded within a complex 3D extracellular matrix. About 70% of these neurons are post-mitotic ciliated cells that respond to light. Unfortunately, like the other cells of the retina, photoreceptors are refractory to transfection, and a toxic delivery of nucleic acid often results in permanent cell loss. RNAi has been applied to retina explants using electroporation, viral, and non-viral vectors but with reproducible, poor gene silencing efficiency. In addition, only a few superficial cells can be transduced/transfected in adult retina explants. Therefore, viruses are often injected into the eye of embryos prior to excision of the retina. However, embryonic explants are not the best model to study most retina diseases since even if they are viable for several weeks, the pathological phenotype often appears later in development. We describe a robust and straightforward method to elicit significant RNAi in adult retina explant using Reverse Magnetofection. This transfection method offers a simple tool for non-toxic gene knockdown of specific genes in adult retina explants by using cationic magnetic nanoparticles (MNPs) to complex and deliver short interfering-RNAs (siRNA) in retina cells under the action of a magnetic field.
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Affiliation(s)
- Marco Bassetto
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, Marseille, France; Gavin Herbert Eye Institute, Center for Translational Vision Research, Department of Physiology & Biophysics, University of California, Irvine, CA, United States
| | - Merve Sen
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | - Florent Poulhes
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, Marseille, France.
| | - Blanca Arango-Gonzalez
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | - Marius Ueffing
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | - Olivier Zelphati
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, Marseille, France
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Bassetto M, Ajoy D, Poulhes F, Obringer C, Walter A, Messadeq N, Sadeghi A, Puranen J, Ruponen M, Kettunen M, Toropainen E, Urtti A, Dollfus H, Zelphati O, Marion V. Magnetically Assisted Drug Delivery of Topical Eye Drops Maintains Retinal Function In Vivo in Mice. Pharmaceutics 2021; 13:pharmaceutics13101650. [PMID: 34683941 PMCID: PMC8540400 DOI: 10.3390/pharmaceutics13101650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/24/2021] [Accepted: 09/29/2021] [Indexed: 01/21/2023] Open
Abstract
Barded-Biedl syndrome (BBS) is a rare genetic disorder with an unmet medical need for retinal degeneration. Small-molecule drugs were previously identified to slow down the apoptosis of photoreceptors in BBS mouse models. Clinical translation was not practical due to the necessity of repetitive invasive intravitreal injections for pediatric populations. Non-invasive methods of retinal drug targeting are a prerequisite for acceptable adaptation to the targeted pediatric patient population. Here, we present the development and functional testing of a non-invasive, topical, magnetically assisted delivery system, harnessing the ability of magnetic nanoparticles (MNPs) to cargo two drugs (guanabenz and valproic acid) with anti-unfolded protein response (UPR) properties towards the retina. Using magnetic resonance imaging (MRI), we showed the MNPs' presence in the retina of Bbs wild-type mice, and their photoreceptor localization was validated using transmission electron microscopy (TEM). Subsequent electroretinogram recordings (ERGs) demonstrated that we achieved beneficial biological effects with the magnetically assisted treatment translating the maintained light detection in Bbs-/- mice (KO). To our knowledge, this is the first demonstration of efficient magnetic drug targeting in the photoreceptors in vivo after topical administration. This non-invasive, needle-free technology expands the application of SMDs for the treatment of a vast spectrum of retinal degenerations and other ocular diseases.
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Affiliation(s)
- Marco Bassetto
- OZ Biosciences, Parc Scientifique de Luminy, Case 922, Zone Entreprise, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (A.W.)
| | - Daniel Ajoy
- INSERM, Ciliopathies Modeling and Associated Therapies Group, Laboratoire de Génétique Médicale, UMRS_U1112, Fédération de Médicine Translationelle de Strasbourg, Université de Strasbourg, 67085 Strasbourg, France; (D.A.); (C.O.); (H.D.)
| | - Florent Poulhes
- OZ Biosciences, Parc Scientifique de Luminy, Case 922, Zone Entreprise, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (A.W.)
| | - Cathy Obringer
- INSERM, Ciliopathies Modeling and Associated Therapies Group, Laboratoire de Génétique Médicale, UMRS_U1112, Fédération de Médicine Translationelle de Strasbourg, Université de Strasbourg, 67085 Strasbourg, France; (D.A.); (C.O.); (H.D.)
| | - Aurelie Walter
- OZ Biosciences, Parc Scientifique de Luminy, Case 922, Zone Entreprise, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (A.W.)
| | - Nadia Messadeq
- INSERM, Institute of Genetics and Molecular and Cellular Biology (IGBMC), 67640 Illkrich-Graffenstaden, France;
| | - Amir Sadeghi
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, 70211 Kuopio, Finland; (A.S.); (J.P.); (M.R.); (E.T.); (A.U.)
| | - Jooseppi Puranen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, 70211 Kuopio, Finland; (A.S.); (J.P.); (M.R.); (E.T.); (A.U.)
| | - Marika Ruponen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, 70211 Kuopio, Finland; (A.S.); (J.P.); (M.R.); (E.T.); (A.U.)
| | - Mikko Kettunen
- Kuopio Biomedical Imaging Unit, A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70150 Kuopio, Finland;
| | - Elisa Toropainen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, 70211 Kuopio, Finland; (A.S.); (J.P.); (M.R.); (E.T.); (A.U.)
| | - Arto Urtti
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, 70211 Kuopio, Finland; (A.S.); (J.P.); (M.R.); (E.T.); (A.U.)
| | - Hélène Dollfus
- INSERM, Ciliopathies Modeling and Associated Therapies Group, Laboratoire de Génétique Médicale, UMRS_U1112, Fédération de Médicine Translationelle de Strasbourg, Université de Strasbourg, 67085 Strasbourg, France; (D.A.); (C.O.); (H.D.)
- Laboratoire de Génétique Médicale, UMRS_U1112, Institut de Génétique Médicale d’Alsace, Fédération de Médicine Translationelle de Strasbourg, Hopiaux Universitaires de Strasbourg, Université de Strasbourg, 67085 Strasbourg, France
| | - Olivier Zelphati
- OZ Biosciences, Parc Scientifique de Luminy, Case 922, Zone Entreprise, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (A.W.)
- Correspondence: (O.Z.); or (V.M.)
| | - Vincent Marion
- INSERM, Ciliopathies Modeling and Associated Therapies Group, Laboratoire de Génétique Médicale, UMRS_U1112, Fédération de Médicine Translationelle de Strasbourg, Université de Strasbourg, 67085 Strasbourg, France; (D.A.); (C.O.); (H.D.)
- ALMS Therapeutics, Parc d’Innovation, 650 Boulevard Gonthier d’Andernach, 67400 Illkirch-Graffenstaden, France
- Correspondence: (O.Z.); or (V.M.)
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Bassetto M, Sen M, Poulhes F, Arango-Gonzalez B, Bonvin E, Sapet C, Ueffing M, Zelphati O. New Method for Efficient siRNA Delivery in Retina Explants: Reverse Magnetofection. Bioconjug Chem 2021; 32:1078-1093. [PMID: 34081855 DOI: 10.1021/acs.bioconjchem.1c00132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The prevalence of retinal disorders associated with visual impairment and blindness is increasing worldwide, while most of them remain without effective treatment. Pharmacological and molecular therapy development is hampered by the lack of effective drug delivery into the posterior segment of the eye. Among molecular approaches, RNA-interference (RNAi) features strong advantages, yet delivering it to the inner layer of the retina appears extremely challenging. To address this, we developed an original magnetic nanoparticles (MNPs)-based transfection method that allows the efficient delivery of siRNA in all retinal layers of rat adult retinas through magnetic targeting. To establish delivery of RNAi throughout the retina, we have chosen organotypic retinal explants as an ex vivo model and for future high content screening of molecular drugs. Conversely to classic Magnetofection, and similar to conditions in the posterior chamber of the eye, our methods allows attraction of siRNA complexed to MNPs from the culture media into the explant. Our method termed "Reverse Magnetofection" provides a novel and nontoxic strategy for RNAi-based molecular as well as gene therapy in the retina that can be transferred to a wide variety of organ explants.
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Affiliation(s)
- Marco Bassetto
- OZ Biosciences, Parc scientifique de Luminy, Case 922, zone entreprise, 13288 Marseille, France
| | - Merve Sen
- Centre for Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany
| | - Florent Poulhes
- OZ Biosciences, Parc scientifique de Luminy, Case 922, zone entreprise, 13288 Marseille, France
| | - Blanca Arango-Gonzalez
- Centre for Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany
| | - Elise Bonvin
- OZ Biosciences, Parc scientifique de Luminy, Case 922, zone entreprise, 13288 Marseille, France
| | - Cedric Sapet
- OZ Biosciences, Parc scientifique de Luminy, Case 922, zone entreprise, 13288 Marseille, France
| | - Marius Ueffing
- Centre for Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany
| | - Olivier Zelphati
- OZ Biosciences, Parc scientifique de Luminy, Case 922, zone entreprise, 13288 Marseille, France
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Sen M, Bassetto M, Poulhes F, Zelphati O, Ueffing M, Arango-Gonzalez B. Efficient Ocular Delivery of VCP siRNA via Reverse Magnetofection in RHO P23H Rodent Retina Explants. Pharmaceutics 2021; 13:pharmaceutics13020225. [PMID: 33562020 PMCID: PMC7914601 DOI: 10.3390/pharmaceutics13020225] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/23/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
The use of synthetic RNA for research purposes as well as RNA-based therapy and vaccination has gained increasing importance. Given the anatomical seclusion of the eye, small interfering RNA (siRNA)-induced gene silencing bears great potential for targeted reduction of pathological gene expression that may allow rational treatment of chronic eye diseases in the future. However, there is yet an unmet need for techniques providing safe and efficient siRNA delivery to the retina. We used magnetic nanoparticles (MNPs) and magnetic force (Reverse Magnetofection) to deliver siRNA/MNP complexes into retinal explant tissue, targeting valosin-containing protein (VCP) previously established as a potential therapeutic target for autosomal dominant retinitis pigmentosa (adRP). Safe and efficient delivery of VCP siRNA was achieved into all retinal cell layers of retinal explants from the RHO P23H rat, a rodent model for adRP. No toxicity or microglial activation was observed. VCP silencing led to a significant decrease of retinal degeneration. Reverse Magnetofection thus offers an effective method to deliver siRNA into retinal tissue. Used in combination with retinal organotypic explants, it can provide an efficient and reliable preclinical test platform of RNA-based therapy approaches for ocular diseases.
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Affiliation(s)
- Merve Sen
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany;
- Graduate Training Centre of Neuroscience, University of Tübingen, 72074 Tübingen, Germany
| | - Marco Bassetto
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (O.Z.)
| | - Florent Poulhes
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (O.Z.)
| | - Olivier Zelphati
- OZ Biosciences, Parc Scientifique de Luminy, CEDEX 9, 13288 Marseille, France; (M.B.); (F.P.); (O.Z.)
| | - Marius Ueffing
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany;
- Correspondence: (M.U.); (B.A.-G.)
| | - Blanca Arango-Gonzalez
- Centre of Ophthalmology, Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany;
- Correspondence: (M.U.); (B.A.-G.)
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Abstract
The viruses historically implicated or currently considered as candidates for misuse in bioterrorist events are poxviruses, filoviruses, bunyaviruses, orthomyxoviruses, paramyxoviruses and a number of arboviruses causing encephalitis, including alpha- and flaviviruses. All these viruses are of concern for public health services when they occur in natural outbreaks or emerge in unvaccinated populations. Recent events and intelligence reports point to a growing risk of dangerous biological agents being used for nefarious purposes. Public health responses effective in natural outbreaks of infectious disease may not be sufficient to deal with the severe consequences of a deliberate release of such agents. One important aspect of countermeasures against viral biothreat agents are the antiviral treatment options available for use in post-exposure prophylaxis. These issues were adressed by the organizers of the 16th Medical Biodefense Conference, held in Munich in 2018, in a special session on the development of drugs to treat infections with viruses currently perceived as a threat to societies or associated with a potential for misuse as biothreat agents. This review will outline the state-of-the-art methods in antivirals research discussed and provide an overview of antiviral compounds in the pipeline that are already approved for use or still under development.
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Affiliation(s)
- J J Bugert
- Bundeswehr Institute for Microbiology, Neuherbergstraße 11, 80937, Munich, Germany.
| | - F Hucke
- Bundeswehr Institute for Microbiology, Neuherbergstraße 11, 80937, Munich, Germany
| | - P Zanetta
- Bundeswehr Institute for Microbiology, Neuherbergstraße 11, 80937, Munich, Germany
| | - M Bassetto
- Department of Chemistry, Swansea University, Swansea, SA2 8PP, UK
| | - A Brancale
- Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, CF10 3NB, UK
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Bassetto M, Sen M, Gonzalez BA, Ueffing M, Poulhes F, Zelphati O. Synthesis and application of magnetic nanoparticles (MNPs) in siRNA delivery to the retina. Acta Ophthalmol 2019. [DOI: 10.1111/j.1755-3768.2019.5378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Merve Sen
- Centre of Ophthalmology Eberhard Karls University of Tuebingen Tuebingen Germany
| | | | - Marius Ueffing
- Centre of Ophthalmology Eberhard Karls University of Tuebingen Tuebingen Germany
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Bassetto M, Ajoy Moreno D, Poulhes F, Marion V, Dollfus H, Zelphati O. Synthesis and application of magnetic nanoparticles (MNPs) in drug delivery to the retina. Acta Ophthalmol 2019. [DOI: 10.1111/j.1755-3768.2019.5380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marco Bassetto
- OZ Biosciences Parc scientifique de Luminy Zone entreprise13288Marseille cedex 9 France
| | - Daniel Ajoy Moreno
- Faculté de médicine Laboratoire de génétique médicale Université de Strasbourg UMR_S1112, 67000Strasbourg France
| | - Florent Poulhes
- OZ Biosciences Parc scientifique de Luminy Zone entreprise13288Marseille cedex 9 France
| | - Vincent Marion
- Faculté de médicine Laboratoire de génétique médicale Université de Strasbourg UMR_S1112, 67000Strasbourg France
| | - Helene Dollfus
- Faculté de médicine Laboratoire de génétique médicale Université de Strasbourg UMR_S1112, 67000Strasbourg France
| | - Olivier Zelphati
- OZ Biosciences Parc scientifique de Luminy Zone entreprise13288Marseille cedex 9 France
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Pasini F, Bassetto M, Todeschini G, DiMarco A, Verlato G, Scognamiglio F, Zanotti R, Veneri D, Cetto G, Ambrosetti A. Primary extranodal lymphomas of Waldeyer's ring, stage IE and IIE. Int J Oncol 1996; 9:777-80. [DOI: 10.3892/ijo.9.4.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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