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Rademakers T, Sthijns MMJPE, Paulino da Silva Filho O, Joris V, Oosterveer J, Lam TW, van Doornmalen E, van Helden S, LaPointe VLS. Identification of Compounds Protecting Pancreatic Islets against Oxidative Stress using a 3D Pseudoislet Screening Platform. Adv Biol (Weinh) 2023; 7:e2300264. [PMID: 37566766 DOI: 10.1002/adbi.202300264] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/20/2023] [Indexed: 08/13/2023]
Abstract
Oxidative stress leads to a lower success rate of clinical islet transplantation. Here, FDA-approved compounds are screened for their potential to decrease oxidative stress and to protect or enhance pancreatic islet viability and function. Studies are performed on in vitro "pseudoislet" spheroids, which are pre-incubated with 1280 different compounds and subjected to oxidative stress. Cell viability and oxidative stress levels are determined using a high-throughput fluorescence microscopy pipeline. Initial screening on cell viability results in 59 candidates. The top ten candidates are subsequently screened for their potential to decrease induced oxidative stress, and eight compounds efficient reduction of induced oxidative stress in both alpha and beta cells by 25-50%. After further characterization, the compound sulfisoxazole is found to be the most capable of reducing oxidative stress, also at short pre-incubation times, which is validated in primary human islets, where low oxidative stress levels and islet function are maintained. This study shows an effective screening strategy with 3D cell aggregates based on cell viability and oxidative stress, which leads to the discovery of several compounds with antioxidant capacity. The top candidate, sulfisoxazole is effective after a 30 min pre-incubation, maintains baseline islet function, and may help alleviate oxidative stress in pancreatic islets.
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Affiliation(s)
- Timo Rademakers
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
| | - Mireille M J P E Sthijns
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
- Food Innovation and Health, Department of Human Biology, Maastricht University, Venlo, 5911 BV, the Netherlands
| | - Omar Paulino da Silva Filho
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
| | - Virginie Joris
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
| | - Jolien Oosterveer
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
| | - Tsang Wai Lam
- Pivot Park Screening Centre (PPSC), Oss, 5349 AB, the Netherlands
| | | | | | - Vanessa L S LaPointe
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, 6229 ER, the Netherlands
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Luna Velez MV, Paulino da Silva Filho O, Verhaegh GW, van Hooij O, El Boujnouni N, Brock R, Schalken JA. Delivery of antisense oligonucleotides for splice-correction of androgen receptor pre-mRNA in castration-resistant prostate cancer models using cell-penetrating peptides. Prostate 2022; 82:657-665. [PMID: 35098567 PMCID: PMC9303360 DOI: 10.1002/pros.24309] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 07/19/2021] [Accepted: 01/07/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Cell-penetrating peptides (CPPs) are a promising approach for delivering antisense oligonucleotides (AONs) as they form nanosized complexes through noncovalent interactions that show efficient cellular uptake. Previously, we have designed an AON system to correct splicing of the androgen receptor (AR) pre-mRNA, thereby preventing the generation of the splice variant AR-V7 mRNA. AON-mediated knockdown of AR-V7 resulted in inhibition of androgen-independent cell proliferation. In this study, we evaluated the CPP-mediated delivery of this AON into castration-resistant prostate cancer cell line models 22Rv1, DuCaP (dura mater cancer of the prostate), and VCaP (vertebral cancer of the prostate). METHODS Nanoparticles (polyplexes) of AONs and CPPs were formed through rapid mixing. The impact of the peptide carrier, the formulation parameters, and cell incubation conditions on cellular uptake of fluorescently labeled AONs were assessed through flow cytometry. The cytotoxic activity of these formulations was measured using the CellTiter-Glo cell viability assay. The effectivity of CPP-mediated delivery of the splice-correcting AON-intronic splicing enhancer (ISE) targeting the ISE in the castration-resistant prostate cancer (CRPC)-derived 22Rv1, DuCaP, and VCaP cells was determined by measuring levels of AR-V7 mRNA normalized to those of the human heterochromatin protein 1 binding protein 3 (HP1BP3). Western blot analysis was used to confirm AR-V7 downregulation at a protein level. The cellular distribution of fluorescently labeled AON delivered by a CPP or a transfection reagent was determined through confocal laser scanning microscopy. RESULTS The amphipathic and stearylated CPP PepFect 14 (PF14) showed higher uptake efficiency than arginine-rich CPPs. Through adjustment of formulation parameters, concentration and incubation time, an optimal balance between carrier-associated toxicity and delivery efficiency was found with a formulation consisting of an amino/phosphate ratio of 3, 0.35 μM AON concentration and 30 min incubation time of the cells with polyplexes. Cellular delivery of AON-ISE directed against AR pre-mRNA achieved significant downregulation of AR-V7 by 50%, 37%, and 59% for 22Rv1, DuCaP, and VCaP cells, respectively, and reduced androgen-independent cell proliferation of DuCaP and VCaP cells. CONCLUSIONS This proof-of-principle study constitutes the basis for further development of CPP-mediated delivery of AONs for targeted therapy in prostate cancer.
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Affiliation(s)
- Maria V. Luna Velez
- Department of Urology, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
| | - Omar Paulino da Silva Filho
- Department of Biochemistry, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
- CAPES FoundationMinistry of Education of BrazilBrasíliaBrazil
| | - Gerald W. Verhaegh
- Department of Urology, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
| | - Onno van Hooij
- Department of Urology, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
| | - Najoua El Boujnouni
- Department of Biochemistry, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
- Department of Medical Biochemistry, College of Medicine and Medical SciencesArabian Gulf UniversityKingdom of Bahrain
| | - Jack A. Schalken
- Department of Urology, Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenthe Netherlands
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Paulino da Silva Filho O, Ali M, Nabbefeld R, Primavessy D, Bovee-Geurts PH, Grimm S, Kirchner A, Wiesmüller KH, Schneider M, Walboomers XF, Brock R. A comparison of acyl-moieties for noncovalent functionalization of PLGA and PEG-PLGA nanoparticles with a cell-penetrating peptide. RSC Adv 2021; 11:36116-36124. [PMID: 35492790 PMCID: PMC9043423 DOI: 10.1039/d1ra05871a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 10/09/2021] [Indexed: 11/21/2022] Open
Abstract
Noncovalent functionalization with acylated cell-penetrating peptides achieves an efficient cellular uptake of PLGA and PEG-PLGA nanoparticles.
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Affiliation(s)
- Omar Paulino da Silva Filho
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
- CAPES Foundation, Ministry of Education of Brazil, DF, Brasília, 70.040-03, Brazil
| | - Muhanad Ali
- Department of Odontology and Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rike Nabbefeld
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Daniel Primavessy
- Department of Biopharmacy and Pharmaceutic Technology, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmaceutics and Biopharmacy, Philipps-University Marburg, 35032 Marburg, Germany
| | - Petra H. Bovee-Geurts
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Silko Grimm
- Evonik Industries, Health Care, Formulation and Polymers, Kirschenallee, 64293 Darmstadt, Germany
| | - Andreas Kirchner
- Department of Biopharmacy and Pharmaceutic Technology, Saarland University, 66123 Saarbrücken, Germany
| | | | - Marc Schneider
- Department of Biopharmacy and Pharmaceutic Technology, Saarland University, 66123 Saarbrücken, Germany
| | - X. Frank Walboomers
- Department of Odontology and Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
- Department of Medical Biochemistry, College of Medicine and Medical Sciences, Arabian Gulf University, Kingdom of Bahrain
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van der Bent ML, Paulino da Silva Filho O, Willemse M, Hällbrink M, Wansink DG, Brock R. The nuclear concentration required for antisense oligonucleotide activity in myotonic dystrophy cells. FASEB J 2019; 33:11314-11325. [PMID: 31311315 DOI: 10.1096/fj.201900263r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Antisense oligonucleotides (ASOs) are a promising class of therapeutics that are starting to emerge in the clinic. Determination of intracellular concentrations required for biologic effects and identification of effective delivery vehicles are crucial for understanding the mode of action and required dosing. Here, we investigated which nuclear oligonucleotide concentration is needed for a therapeutic effect for a triplet repeat-targeting ASO in a muscle cell model of myotonic dystrophy type 1 (DM1). For cellular delivery, ASOs were complexed into nanoparticles using the cationic cell-penetrating peptides nona-arginine and PepFect14 (PF14). Although both peptides facilitated uptake, only PF14 led to a dose-dependent correction of disease-typical abnormal splicing. In line with this observation, time-lapse confocal microscopy demonstrated that only PF14 mediated translocation of the ASOs to the nucleus, which is the main site of action. Through fluorescence lifetime imaging, we could distinguish intact oligonucleotide from free fluorophore, showing that PF14 also shielded the ASOs from degradation. Finally, we employed a combination of live-cell fluorescence correlation spectroscopy and immunofluorescence microscopy and demonstrated that intranuclear blocking-type oligonucleotide concentrations in the upper nanomolar range were required to dissolve nuclear muscleblind-like protein 1 foci, a hallmark of DM1. Our findings have important implications for the clinical use of ASOs in DM1 and provide a basis for further research on other types of ASOs.-Van der Bent, M. L., Paulino da Silva Filho, O., Willemse, M., Hällbrink, M., Wansink, D. G., Brock, R. The nuclear concentration required for antisense oligonucleotide activity in myotonic dystrophy cells.
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Affiliation(s)
- M Leontien van der Bent
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Omar Paulino da Silva Filho
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands.,Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Foundation, Ministry of Education of Brazil, Brasilia, Brazil
| | - Marieke Willemse
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Mattias Hällbrink
- Department of Neurochemistry, Stockholm University, Stockholm, Sweden
| | - Derick G Wansink
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, The Netherlands
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van der Bent ML, Paulino da Silva Filho O, van Luijk J, Brock R, Wansink DG. Assisted delivery of antisense therapeutics in animal models of heritable neurodegenerative and neuromuscular disorders: a systematic review and meta-analysis. Sci Rep 2018; 8:4181. [PMID: 29520012 PMCID: PMC5843643 DOI: 10.1038/s41598-018-22316-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 02/21/2018] [Indexed: 12/14/2022] Open
Abstract
Antisense oligonucleotide (AON)-based therapies hold promise for a range of neurodegenerative and neuromuscular diseases and have shown benefit in animal models and patients. Success in the clinic is nevertheless still limited, due to unfavourable biodistribution and poor cellular uptake of AONs. Extensive research is currently being conducted into the formulation of AONs to improve delivery, but thus far there is no consensus on which of those strategies will be the most effective. This systematic review was designed to answer in an unbiased manner which delivery strategies most strongly enhance the efficacy of AONs in animal models of heritable neurodegenerative and neuromuscular diseases. In total, 95 primary studies met the predefined inclusion criteria. Study characteristics and data on biodistribution and toxicity were extracted and reporting quality and risk of bias were assessed. Twenty studies were eligible for meta-analysis. We found that even though the use of delivery systems provides an advantage over naked AONs, it is not yet possible to select the most promising strategies. Importantly, standardisation of experimental procedures is warranted in order to reach conclusions about the most efficient delivery strategies. Our best practice guidelines for future experiments serve as a step in that direction.
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Affiliation(s)
- M Leontien van der Bent
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands
| | - Omar Paulino da Silva Filho
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands
- CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
| | - Judith van Luijk
- Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE), Department of Health Evidence, Radboud university medical center, Nijmegen, The Netherlands
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands
| | - Derick G Wansink
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud university medical center, Nijmegen, The Netherlands.
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Jekhmane S, de Haas R, Paulino da Silva Filho O, van Asbeck AH, Favretto ME, Hernandez Garcia A, Brock R, de Vries R. Virus-Like Particles of mRNA with Artificial Minimal Coat Proteins: Particle Formation, Stability, and Transfection Efficiency. Nucleic Acid Ther 2017; 27:159-167. [DOI: 10.1089/nat.2016.0660] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Shehrazade Jekhmane
- Physical Chemistry and Soft Matter, Wageningen University, Wageningen, the Netherlands
| | - Rob de Haas
- Physical Chemistry and Soft Matter, Wageningen University, Wageningen, the Netherlands
| | - Omar Paulino da Silva Filho
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
- CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
| | - Alexander H. van Asbeck
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marco Emanuele Favretto
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Renko de Vries
- Physical Chemistry and Soft Matter, Wageningen University, Wageningen, the Netherlands
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