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Llinàs MC, Martínez-Edo G, Cascante A, Porcar I, Borrós S, Sánchez-García D. Preparation of a mesoporous silica-based nano-vehicle for dual DOX/CPT pH-triggered delivery. Drug Deliv 2018; 25:1137-1146. [PMID: 29779394 PMCID: PMC6058477 DOI: 10.1080/10717544.2018.1472678] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/24/2018] [Accepted: 05/01/2018] [Indexed: 12/04/2022] Open
Abstract
A dual doxorubicin/camptothecin (DOX/CPT) pH-triggered drug delivery mesoporous silica nanoparticle (MSN)-based nano-vehicle has been prepared. In this drug-delivery system (DDS), CPT is loaded inside the pores of the MSNs, while DOX is covalently attached to the surface of an aldehyde-functionalized MSN through a dihydrazide-polyethylene glycol chain. Thus, DOX and the linker act as pH-sensitive gatekeeper. The system is versatile and easy to assemble, not requiring the chemical modification of the drugs. While at physiological conditions the release of the drugs is negligible, at acidic pH a burst release of DOX and a gradual release of CPT take place. In vitro cytotoxicity tests have demonstrated that this DDS can deliver efficiently DOX and CPT for combination therapy.
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Affiliation(s)
- Maria C Llinàs
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
| | - Gabriel Martínez-Edo
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
| | - Anna Cascante
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
| | - Irene Porcar
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
| | - Salvador Borrós
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
- b Centro de Investigación Biomédica en Red en Bioingeniería , Biomateriales y Nanomedicina (CIBER-BBN) , Zaragoza , Spain
| | - David Sánchez-García
- a Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià , Universitat Ramon Llull , Barcelona , Spain
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Fornaguera C, Lázaro MÁ, Brugada-Vilà P, Porcar I, Morera I, Guerra-Rebollo M, Garrido C, Rubio N, Blanco J, Cascante A, Borrós S. Application of an assay Cascade methodology for a deep preclinical characterization of polymeric nanoparticles as a treatment for gliomas. Drug Deliv 2018; 25:472-483. [PMID: 29412012 PMCID: PMC6058495 DOI: 10.1080/10717544.2018.1436099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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] [Indexed: 01/29/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most devastating primary brain tumor due to its infiltrating and diffuse growth characteristics, a situation compounded by the lack of effective treatments. Currently, many efforts are being devoted to find novel formulations to treat this disease, specifically in the nanomedicine field. However, due to the lack of comprehensive characterization that leads to insufficient data on reproducibility, only a reduced number of nanomedicines have reached clinical phases. In this context, the aim of the present study was to use a cascade of assays that evaluate from physical-chemical and structural properties to biological characteristics, both in vitro and in vivo, and also to check the performance of nanoparticles for glioma therapy. An amphiphilic block copolymer, composed of polyester and poly(ethylene glycol; PEG) blocks, has been synthesized. Using a mixture of this copolymer and a polymer containing an active targeting moiety to the Blood Brain Barrier (BBB; Seq12 peptide), biocompatible and biodegradable polymeric nanoparticles have been prepared and extensively characterized. In vitro studies demonstrated that nanoparticles are safe for normal cells but cytotoxic for cancer cells. In vivo studies in mice demonstrated the ability of the Seq12 peptide to cross the BBB. Finally, in vivo efficacy studies using a human tumor model in SCID mice resulted in a significant 50% life-span increase, as compared with non-treated animals. Altogether, this assay cascade provided extensive pre-clinical characterization of our polymeric nanoparticles, now ready for clinical evaluation.
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Affiliation(s)
| | | | - Pau Brugada-Vilà
- a Sagetis-Biotech , Barcelona , Spain.,b Grup d'Enginyera de Materials (GEMAT) , Institut Químic de Sarrià, Universitat Ramon Llull , Barcelona , Spain
| | | | | | - Marta Guerra-Rebollo
- c Institut de Química Avançada de Catalunya (IQAC-CSIC) , Barcelona , Spain.,d Centro de Investigación Biomédica en Red en Bioingenierı´a , Biomateriales y Nanomedicina (CIBER-BBN) , Barcelona , Spain
| | - Cristina Garrido
- c Institut de Química Avançada de Catalunya (IQAC-CSIC) , Barcelona , Spain.,d Centro de Investigación Biomédica en Red en Bioingenierı´a , Biomateriales y Nanomedicina (CIBER-BBN) , Barcelona , Spain
| | - Núria Rubio
- c Institut de Química Avançada de Catalunya (IQAC-CSIC) , Barcelona , Spain.,d Centro de Investigación Biomédica en Red en Bioingenierı´a , Biomateriales y Nanomedicina (CIBER-BBN) , Barcelona , Spain
| | - Jerónimo Blanco
- c Institut de Química Avançada de Catalunya (IQAC-CSIC) , Barcelona , Spain.,d Centro de Investigación Biomédica en Red en Bioingenierı´a , Biomateriales y Nanomedicina (CIBER-BBN) , Barcelona , Spain
| | - Anna Cascante
- a Sagetis-Biotech , Barcelona , Spain.,b Grup d'Enginyera de Materials (GEMAT) , Institut Químic de Sarrià, Universitat Ramon Llull , Barcelona , Spain
| | - Salvador Borrós
- a Sagetis-Biotech , Barcelona , Spain.,b Grup d'Enginyera de Materials (GEMAT) , Institut Químic de Sarrià, Universitat Ramon Llull , Barcelona , Spain.,d Centro de Investigación Biomédica en Red en Bioingenierı´a , Biomateriales y Nanomedicina (CIBER-BBN) , Barcelona , Spain
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Tribet C, Porcar I, Bonnefont PA, Audebert R. Association between Hydrophobically Modified Polyanions and Negatively Charged Bovine Serum Albumin. J Phys Chem B 1998. [DOI: 10.1021/jp973022p] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Tribet
- Laboratoire de Physico-chimie Macromoléculaire, Université Paris 6, CNRS URA 278, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - I. Porcar
- Laboratoire de Physico-chimie Macromoléculaire, Université Paris 6, CNRS URA 278, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - P. A. Bonnefont
- Laboratoire de Physico-chimie Macromoléculaire, Université Paris 6, CNRS URA 278, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - R. Audebert
- Laboratoire de Physico-chimie Macromoléculaire, Université Paris 6, CNRS URA 278, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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Pérez-Payá E, Porcar I, Gómez CM, Pedrós J, Campos A, Abad C. Binding of basic amphipathic peptides to neutral phospholipid membranes: a thermodynamic study applied to dansyl-labeled melittin and substance P analogues. Biopolymers 1997; 42:169-81. [PMID: 9234996 DOI: 10.1002/(sici)1097-0282(199708)42:2<169::aid-bip6>3.0.co;2-l] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A thermodynamic approach is proposed to quantitatively analyze the binding isotherms of peptides to model membranes as a function of one adjustable parameter, the actual peptide charge in solution z(p)+. The main features of this approach are a theoretical expression for the partition coefficient calculated from the molar free energies of the peptide in the aqueous and lipid phases, an equation proposed by S. Stankowski [(1991) Biophysical Journal, Vol. 60, p. 341] to evaluate the activity coefficient of the peptide in the lipid phase, and the Debye-Hückel equation that quantifies the activity coefficient of the peptide in the aqueous phase. To assess the validity of this approach we have studied, by means of steady-state fluorescence spectroscopy, the interaction of basic amphipathic peptides such as melittin and its dansylcadaverine analogue (DNC-melittin), as well as a new fluorescent analogue of substance P, SP (DNC-SP) with neutral phospholipid membranes. A consistent quantitative analysis of each binding curve was achieved. The z(p)+ values obtained were always found to be lower than the physical charge of the peptide. These z(p)+ values can be rationalized by considering that the peptide charged groups are strongly associated with counterions in buffer solution at a given ionic strength. The partition coefficients theoretically derived using the z(p)+ values were in agreement with those deduced from the Gouy-Chapman formalism. Ultimately, from the z(p)+ values the molar free energies for the free and lipid-bound states of the peptides have been calculated.
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Affiliation(s)
- E Pérez-Payá
- Departament de Bioquímica i Biologia Molecular, Universitat de Valencia, Spain
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